Mach - Central heating boiler FERROLI - Free user manual and instructions

Product Type	Floor-standing condensing central heating boiler
Models	MACH 150, 225, 300, 370, 450, 520, 600
Rated Heat Output (Pn)	139 kW (MACH 150) to 557 kW (MACH 600)
Min. Heat Output	14 kW (all models)
Efficiency at 30% load (low temperature)	108.8%
Efficiency at Pmax (80/60°C)	98%
Gas Types	Natural Gas (G20) and LPG (G31)
Power Supply	230V ~ 50Hz
Max. Working Pressure (Heating)	6 bar
Min. Working Pressure (Heating)	0.8 bar
Max. Adjustment Temperature (Heating)	95°C
Water Content (Heating)	24 L (MACH 150) to 90 L (MACH 600)
Weight (Empty)	215 kg (MACH 150) to 500 kg (MACH 600)
Protection Rating	IPX4D
Flue Connection Diameter	200 mm
System Flow/Return Connections	DN65 flanged
Gas Inlet Connection	DN40 flanged
Control Panel	LCD display with contextual buttons, menu navigation, time programming, sliding temperature control
Safety Features	Frost protection, anti-legionella, safety thermostat, overheat protection
Maintenance	Periodic by qualified personnel; cleaning and condensate drain

Frequently Asked Questions - Mach FERROLI

How do I turn on the Ferroli Mach boiler?

Press the main On/Off switch (detail 14, fig. 1) on the control panel. The display will show FH for an air venting cycle (up to 300 seconds). After that, the boiler is ready to operate automatically when there is a heating demand.

How can I adjust the heating temperature?

Access the 'USER MENU' > 'HEATING' > 'Adjustment Temp' and use the navigation buttons to set a value between 20°C and 90°C. Confirm with the OK button. The setpoint is active when time programming is not enabled.

How do I program the weekly schedule for heating?

Go to 'USER MENU' > 'HEATING' > 'Time Program'. Select a day or range of days. Set up to 6 time bands with start/end times and modes (ON, reduced temperature, OFF, disabled). Use contextual buttons to adjust values and OK to confirm. Copy to next day if needed.

What should I do if the display shows error code 37?

Error 37 indicates insufficient system water pressure. Check the pressure gauge; it should be around 1.0 bar when cold. Refill the system via the filling valve until pressure is restored. The boiler will then perform a 300-second air vent cycle (FH on display).

How do I enable the anti-legionella function?

First, set parameter P23 in the TECHNICIAN MENU to ON. Then go to 'USER MENU' > 'DOMESTIC HOT WATER' > 'Legionella' and set the day, time, duration, and temperature. The function runs once a week. It only activates when the boiler is in automatic mode and during ON or reduced temperature time bands.

Can I use the boiler in summer only for hot water?

Yes. Press the Summer/Winter button (detail 9, fig. 1) for 1 second to activate Summer mode. The heating function is disabled but DHW production remains active (if an external hot water tank is installed). The frost protection stays on. Press again to deactivate.

How do I shut down the boiler completely?

From the main screen, press the contextual button (to enter standby) and confirm with OK. This turns off heating and DHW but keeps the PCB powered for frost protection. To disconnect power fully, press the main switch (detail 14, fig. 1) to the OFF position.

What is the recommended system water pressure?

The recommended cold filling pressure is approximately 1.0 bar. The minimum working pressure is 0.8 bar; if it falls below, the boiler will show fault 37. Maximum working pressure is 6 bar.

How often should the boiler be serviced?

Annual maintenance by qualified personnel is essential to ensure proper operation. The control panel can be set to remind you of the next service date (via 'Service Intervention Date' in the menu).

What type of gas can the Mach boiler use?

The boiler is configured for natural gas (G20) or LPG (G31). The gas type can be selected in the TECHNICIAN MENU under 'Gas Type Selection'. Ensure the correct nozzle and pressure settings are used.

USER MANUAL Mach FERROLI

Three black industrial electrical cabinets with visible cooling fans and mounting feet (no text or symbols)

CE

IT	ISTRUZIONE PER L'USO L'INSTALLAZIONE E LA MANUTENZIONE
ES	INSTRUCCIONES DE USO, INSTALACIÓN Y MANTENIMIENTO
RO	INSTRUCTIUNI DE UTILIZARE, INSTALARE ŞI ÎNTRETINERE
PL	INSTRUKCJA UŻYTKOWANIA, INSTALOWANIA I KONSERWACJI
EN	INSTRUCTIONS FOR USE, INSTALLATION AND MAINTENANCE

fig. 20

fig. 23 fig. 24

graph TD
    A[" "] --> B["5"]
    C[" "] --> D["6"]
    D --> E["OK"]
    E --> F["7"]

fig. 25

fig. 26

Technical line drawing of a rectangular industrial machine with mounting base and side supports (no text or symbols)

Posizionamento

$$ A = F A S E A P E R T U R A $$

$$ B = N E U T R O $$

$$ C = F A S E C H I U S U R A $$

a 1a zona (diretta)

fig. 54

Technical line drawing of a mechanical assembly with no visible text or symbols

fig. 56

Technical line drawing of an industrial machine with internal components and directional arrows indicating flow or movement (no text or symbols present)

fig. 55

Technical line drawing of an industrial machine with internal components and piping (no text or symbols)

fig. 57

Technical line drawing of a mechanical device with cylindrical components and mounting flanges (no text or symbols)

fig. 59

Line drawing of a rectangular industrial machine with a cylindrical component and wheels, no text or symbols present

fig. 60

Technical line drawing of a mechanical device with cylindrical components and mounting flanges (no text or symbols)

fig. 61

Technical line drawing of a mechanical assembly with multiple components and mounting flanges (no text or symbols)

Technical line drawing of a mechanical assembly with labeled components (no text or symbols beyond labels)

Technical line drawing of a mechanical pump assembly with mounting flanges and a labeled component 'F' (no text or symbols beyond label)

fig. 67

fig. 68

fig. 71

fig. 72

Technical line drawing of industrial piping and valves with a black arrow indicating direction (no text or symbols)

Technical line drawing of a mechanical assembly with no visible text or symbols

Technical line drawing of a mechanical assembly with no visible text or symbols

fig. 86 - Apertura coperchio

1. Agganciare la staffa (Vedi fig. 87)

Line drawing of a mechanical device with open lid, flanges, and internal components (no text or symbols)

Technical line drawing of a mechanical assembly with no visible text or symbols

fig. 87

Technical line drawing of an industrial machine with internal components and mounting brackets (no text or symbols)

fig. 88

Manutenzione moduli

Mechanical diagram showing two configurations of a valve assembly with tubing and a pipe, no text or symbols present.

fig. 90

Legenda figure cap. 4

II2HM3P (IT) II2H3P (ES) II2H3P (RO) II2E3P (PL) II2EK3P (NL) I2Hs (HU)

MODELLO: MACH 150 - (OMCMFAWA)

fig. 20

fig. 21

graph TD
    A["Step 1"] --> B["Step 2"]
    B --> C{OK}
    C -->|6| D["Step 3"]
    D --> E["Step 4"]

fig. 25

Technical line drawing of a rectangular industrial machine with mounting base and side supports (no text or symbols)

Emplazamiento

$$ A = F A S E D E A P E R T U R A $$

$$ B = N E U T R O $$

$$ C = F A S E D E C I E R R E $$

a 1ª zona (directa)

b Circuito del acumulador
M Ida
R Retorno
K1 - K2bobina 230 Vca, < 2,2 VA

$$ \text { contacto } 2 3 0 \mathrm{Vca} , > 8 \mathrm{A} $$

Pure architectural floor plan lines without any text, numbers, or symbols

fig. 54

Technical line drawing of a mechanical assembly with no visible text or symbols

fig. 56

Technical line drawing of an industrial machine with internal components and directional arrows indicating flow or movement (no text or symbols present)

fig. 55

Technical line drawing of an industrial machine with internal components and piping (no text or symbols)

fig. 57

Technical line drawing of a mechanical device with cylindrical components and mounting flanges (no text or symbols)

fig. 59

Line drawing of a rectangular industrial machine with internal pipes and wheels, no text or symbols present

fig. 60

Technical line drawing of a mechanical device with pipes and mounting flanges (no text or symbols)

fig. 61

Technical line drawing of a mechanical assembly with multiple components and mounting feet (no text or symbols)

Technical line drawing of a mechanical assembly with a pump and a rotating component (no text or symbols)

fig. 65

fig. 66

Technical line drawing of a mechanical pump assembly with mounting flanges and a labeled component 'F' (no text or symbols beyond label)

fig. 67

fig. 68

fig. 71

fig. 72

Technical line drawing of industrial piping and valves with a black arrow indicating direction (no text or symbols)

Technical line drawing of a mechanical assembly with no visible text or symbols

Technical line drawing of a mechanical assembly with no visible text or symbols

Line drawing of a mechanical device with open lid, flanges, and internal components (no text or symbols)

Technical line drawing of a mechanical assembly with no visible text or symbols

fig. 87

Technical line drawing of an industrial machine with internal components and mounting brackets (no text or symbols)

fig. 88

Mechanical diagram showing two configurations of a valve assembly with tubing and pipe fittings (no text or labels)

fig. 90

II2HM3P (IT) II2H3P (ES) II2H3P (RO) II2E3P (PL) II2EK3P (NL) I2Hs (HU)

II2HM3P (IT) II2H3P (ES) II2H3P (RO) II2E3P (PL) II2EK3P (NL) I2Hs (HU)

MODELO: MACH 150 - (0MCMFAWA)

graph TD
    A["Group A"] --> B["Group B"]
    B --> C["Group C"]
    D["Group D"] --> E["Group E"]
    E --> F["Group F"]
    G["Group G"] --> H["Group H"]
    H --> I["Group I"]
    J["Group J"] --> K["Group K"]
    K --> L["Group L"]
    M["Group M"] --> N["Group N"]
    N --> O["Group O"]
    P["Group P"] --> Q["Group Q"]
    Q --> R["Group R"]
    S["Group S"] --> T["Group T"]
    T --> U["Group U"]
    V["Group V"] --> W["Group W"]
    W --> X["Group X"]
    Y["Group Y"] --> Z["Group Z"]
    Z --> AA["Group AA"]
    AB["Group AB"] --> AC["Group AB"]
    AC --> AD["Group AD"]

Excludere boiler (economy)

C

graph TD
    A["1"] --> B["2"]
    C["5"] --> D["3"]
    E["7"] --> F["4"]
    G["OK"] --> H["OK"]

fig. 11- Reglarea orei

Oprirea centralei

fig. 14

fig. 15

Reglarea temperaturii apei calde menajere (cu boiler optional instalat)

Accesati meniul „Temp. de reglare” pentru a modifica temperatura de la un minim de 10°C la un maxim de 65°C. Confirmați cu tasta OK.

fig. 16

Reducerea temperaturii apei calde menajere (cu boiler optional instalat)

fig. 17

fig. 18

fig. 19

fig. 20

fig. 22

graph TD
    A["1"] --> B["2"]
    C["△"] --> D["OK"]
    E["7"] --> F["△"]

fig. 23 fig. 24

graph TD
    A["Step 1"] --> B["Step 2"]
    B --> C{OK}
    C -->|6| D["Step 3"]
    D --> E["Step 4"]

fig. 25

fig. 26

fig. 27

fig. 29- Curba de compensare

Technical line drawing of a rectangular industrial machine with mounting base and side-mounted components (no text or symbols)

Pozitionarea

fig. 38

fig. 39

fig. 40

$$ A = F A Z A D E D E S C H I D E R E $$

$$ B = N E U T R U $$

$$ C = F A Z A D E \hat {I} N C H I D E R E $$

a Zona 1 (directă)

b Circuit boiler

M Tur

R Retur

K1 - K2bobina 230 V c.a., < 2,2 VA contact 230 V c.a., > 8A

Pure electrical circuit lines without any symbols

fig. 54

Technical line drawing of a mechanical assembly with no visible text or symbols

fig. 56

Technical line drawing of an industrial machine with internal components and directional arrows indicating flow or movement (no text or symbols present)

fig. 55

Technical line drawing of an industrial machine with internal components and piping (no text or symbols)

fig. 57

fig. 58- Panoul de borne electric

Sarcini maxime aplicabile:

Technical line drawing of a mechanical device with cylindrical components and mounting flanges (no text or symbols)

Line drawing of a rectangular industrial machine with internal pipes and mounting feet (no text or symbols)

fig. 60

Technical line drawing of a mechanical device with pipes and mounting flanges (no text or symbols)

fig. 61

Technical line drawing of a mechanical assembly with no visible text or symbols

Technical line drawing of a mechanical assembly with labeled components (no text or symbols beyond labels)

Technical line drawing of a mechanical pump assembly with mounting flanges and a labeled component 'F' (no text or symbols beyond label)

fig. 67

fig. 68

fig. 71

fig. 72

Technical line drawing of industrial piping and valves with a black arrow indicating direction (no text or symbols)

Technical line drawing of a mechanical assembly with no visible text or symbols

fig. 79- Šurubul de reglare a debitului maxim

Reglarea CO₂ la debitul termic minim

Technical line drawing of a mechanical assembly with no visible text or symbols

fig. 80- Şurubul de reglare a debitului minim OFFSET

REPETAȚI ÎNTREAGA PROCEDURĂ DE CONTROL A ARDERII PENTRU TOATE MODULELE CENTRALEI.

Technical line drawing of a mechanical device with an inset close-up showing internal components (no text or symbols)

fig. 87

Technical line drawing of an industrial electrical cabinet with internal components and mounting flanges (no text or labels)

fig. 88

Mechanical diagram showing two configurations of a piping system with hoses and valves (no text or labels)

fig. 90

3.4 Rezolvarea problemelor

Diagnosticarea

CATEGORIE GAZ II2HM3P (IT) II2H3P (ES) II2H3P (RO) II2E3P (PL) II2EK3P (NL) I2Hs (HU)

II2HM3P (IT) II2H3P (ES) II2H3P (RO) II2E3P (PL) II2EK3P (NL) I2Hs (HU)

CATEGORIE GAZ
II2HM3P (IT) II2H3P (ES) II2H3P (RO) II2E3P (PL) II2EK3P (NL) I2Hs (HU)

C

graph TD
    A["05\n06\n07\n08"] --> B["OK to confirm"]
    C["OK"] --> D["5"]
    E["OK"] --> F["7"]

wygląd 8

graph TD
    A["1"] --> B["2"]
    C["5"] --> D["3"]
    E["2"] --> F["7"]
    G["OK"] --> H["7"]

wygląd 1 4

wygląd 1 5

wygląd 1 6

wygląd 1 7

wygląd 1 8

wygląd 1 9

wygląd 2 0

wygląd 2 2

graph TD
    A["1"] --> B["2"]
    B --> C["3"]
    C --> D["7"]
    style A fill:#f9f,stroke:#333
    style B fill:#f9f,stroke:#333
    style C fill:#f9f,stroke:#333
    style D fill:#f9f,stroke:#333

wygląd 23

wygląd 24

graph TD
    A["Step 1"] --> B["Step 2"]
    B --> C{OK}
    C -->|6| D["Step 3"]
    D --> E["Step 4"]

wygląd 2 5

wygląd 2 6

wygląd 27

Technical line drawing of a rectangular industrial machine with mounting base and side panel (no text or symbols)

Ustawienie

wygląd 3 8

wygląd 3 9

wygląd 4 0

Pure architectural floor plan lines without any text, numbers, or symbols

wygląd 5 4

Technical line drawing of a mechanical assembly with no visible text or symbols

wygląd 5 6

Technical line drawing of an industrial machine with internal components and directional arrows indicating flow or movement (no text or symbols present)

wygląd 5 5

Technical line drawing of an industrial machine with internal components and piping (no text or symbols)

wygląd 5 7

Technical line drawing of a mechanical device with cylindrical components and mounting flanges (no text or symbols)

fig. 59

Line drawing of a rectangular industrial machine with cylindrical components and wheels, no text or symbols present

fig. 60

Technical line drawing of a mechanical device with cylindrical components and mounting flanges (no text or symbols)

fig. 61

Technical line drawing of a mechanical assembly with multiple components and mounting feet (no text or symbols)

Technical line drawing of a mechanical assembly with labeled components (no text or symbols beyond labels)

Technical line drawing of a mechanical pump assembly with mounting flanges and a labeled component 'F' (no text or symbols beyond label)

wygląd67

wygląd68

wygląd71

wygląd72

Technical line drawing of industrial piping and valves with a black arrow indicating direction (no text or symbols)

Technical line drawing of a mechanical assembly with no visible text or symbols

Technical line drawing of a mechanical assembly with no visible text or symbols

Line drawing of a mechanical device with open lid, flanges, and internal components (no text or symbols)

Technical line drawing of a mechanical assembly with no visible text or symbols

fig. 87

Technical line drawing of an industrial machine with internal components and mounting brackets (no text or symbols)

fig. 88

Konserwacja modułów

Mechanical diagram showing two configurations of a valve assembly with tubing and a pipe, no text or symbols present.

wygląd 9 0

3.4 Usuwanie usterek

Diagnostyka

II2HM3P (IT) II2H3P (ES) II2H3P (RO) II2E3P (PL) II2EK3P (NL) I2Hs (HU)

MODEL: MACH 150 - (OMCMFAWA)

• Read the warnings in this instruction booklet carefully since they provide important information on safe installation, use and maintenance.
• This instruction booklet is an integral and essential part of the product and must be kept with care by the user for future reference.
• If the unit is sold or transferred to another owner or if it is to be moved, always make sure the booklet stays with the boiler so that it can be consulted by the new owner and/or installer.
• Installation and maintenance must be carried out by professionally qualified personnel, according to current regulations and the manufacturer's instructions.
• Incorrect installation or inadequate maintenance can result in damage or injury. The manufacturer declines any liability for damage caused by errors in installation and use or by failure to follow the instructions provided.
• Before carrying out any cleaning or maintenance operation, disconnect the unit from the power supply using the system switch and/or the special cut-off devices.

• In case of a fault and/or poor operation, deactivate the unit and do not try to repair it or directly intervene. Contact professionally qualified personnel. Any repair/replacement of the products must only be carried out by qualified personnel using genuine parts. Failure to comply with the above can compromise the safety of the unit.

• Periodic maintenance performed by qualified personnel is essential in order to ensure proper operation of the unit.

• This unit must only be used for its intended purpose. Any other use is deemed improper and therefore hazardous.
  • After unpacking, check the good condition of the contents. The packing materials are potentially hazardous and must not be left within the reach of children.
• The unit can be used by children aged at least 8 years and by persons with reduced physical, sensory or mental capabilities, or lacking experience or the necessary knowledge, only if under supervision or they have received instructions on its safe use and the related risks. Children must not play with the unit. Cleaning and maintenance intended to be done by the user can be carried out by children aged at least 8 years only if under supervision.
• In case of doubt, do not use the unit. Contact the supplier.
• The unit and its accessories must be appropriately disposed of in compliance with current regulations.
• The images given in this manual are a simplified representation of the product. In this representation there may be slight and insignificant differences with respect to the product supplied.

	This symbol indicates “CAUTION” and is placed next to all safety warnings. Strictly follow these instructions in order to avoid danger and damage to persons, animals and things
	This symbols calls attention to a note or important notice.
	This symbol, which is used on the product, packaging or documents, means that at the end of its useful life, this product must not be collected, recycled or disposed of together with domestic waste.Improper management of electric or electronic waste can lead to the leakage of hazardous substances contained in the product. For the purpose of preventing damage to health or the environment, users are kindly asked to separate this equipment from other types of waste and to ask for it to be dealt with by the municipal waste service or dealer under the conditions and according to the methods set down in national and international laws transposing the Directive 2012/19/EU.Separate waste collection and recycling of unused equipment helps to save natural resources and to guarantee that this waste is processed in a manner that is safe for health and the environment.For more information about how to collect electric and electronic equipment and appliances, please contact your local Council or Public Authority competent to issue the relevant permits.

The CE marking certifies that the products meet the essential requirements of the relevant directives in force.

The declaration of conformity may be requested from the manufacturer.

COUNTRIES OF DESTINATION: IT - ES - RO - PL - NL - HU

1 Operating instructions .... 294

1.1 Introduction....294
1.2 Control panel 294
1.3 Lighting and shutdown 298
1.4 Adjustments....299

2 Installation....308

2.1 General Instructions ....308
2.2 Place of installation 308
2.3 Plumbing connections 310
2.4 Gas connection 322
2.5 Electrical connections....323
2.6 Flue connection 325
2.7 Condensate drain connection....327

3 Service and maintenance.... 328

3.1 Adjustments....328
3.2 Commissioning....337
3.3 Maintenance 337
3.4 Troubleshooting....341

4 Technical data and characteristics 343

4.1 Dimensions and connections ...... 344
4.2 Main components 346
4.3 Hydraulic circuit 347
4.4 Technical data table 348
4.5 ErP tables....351
4.6 Wiring diagrams 358

1. Operating instructions

1.1 Introduction

Dear Customer,

Thank you for choosing MACH, a floor-standing boiler FERROLI featuring advanced design, cutting-edge technology, high reliability and quality construction. Please read this manual carefully, as it provides important information on safe installation, use and maintenance.

MACH is a very high efficiency and low emissions premix condensing heat generator, running on natural gas or LPG. Each MACH generator internally consists of several independent aluminum thermal modules (from 2 to 8), connected in parallel and managed by a single microprocessor control system. Each thermal module inside the MACH has its own modulating premix burner and its own circulating pump.

1.2 Control panel

fig. 1 - Control panel

Legend

1 = Contextual button 1 8 = Automatic/Manual Heating/DHW button
2 = Contextual button 2 9 = Summer/Winter mode selection button
3 = Contextual button 3 10 = Economy/Comfort/Copy mode selection button
4 = Dot matrix display (example - main screen) 11 = Menu exit button
5 = Menu navigation button 12 = Main menu button
6 = Confirm/menu access button 13 = Home button (back to main screen)
7 = Menu navigation button 14 = Main switch

Contextual button

The contextual buttons (details 1, 2, 3 - fig. 1) are grey, with no screen print, and take on a different meaning depending on the menu selected. It is essential to observe the indication provided by the display (icons and text). In fig. 1 for example, using the contextual button 2 (detail 2 - fig. 1) it is possible access unit information such as: temperature of sensors, work power, etc.

Direct buttons

The direct buttons (details 8, 9, 10 - fig. 1) always have the same function.

Menu/navigation buttons

The menu/navigation buttons (details 5, 6, 7, 11, 12, 13 - fig. 1) are used to navigate among the various menus implemented in the control panel.

Menu structure

From the Home page, press the main Menu button (detail 12 - fig. 1).

fig. 2
Access the "User" menu by pressing contextual button 1 (detail 1 - fig. 1). Then use the "menu navigation" buttons to access the different levels described in the following table.

USER MENU
HEATING
	Adjustment Temp		See fig. 14
	[KZHS] Reduction Adjustment Temp		See fig. 15
	[BX2A]Sliding Temperature	Curva1	See fig. 29
		Offset1	See fig. 30
		Heating Off External Temp	See page 306
		Curve2	/
		Offset2	/
	Time Program	See “Time programming” on page 301
	ESTIC HOT WATER
	_ Adjustment Temp		See fig. 16
	Reduction Adjustment Temp		See fig. 17
	Legionella	See “Legionella programming (with optional hot water tank installed)” on page 304
	Time Program	See “Time programming” on page 301
VACATION FUNCTION
	[ZZWY]	See “Holiday Function” on page 304
MAINTENANCE
	Test Mode	TEST Test Mode	See page 330
		Gas Type Selection	See fig. 70
		Test Cascade Test Mode	See fig. 82
	Service Information	See “Service Information” on page 305
	Service Intervention Date	See “Service Intervention Date” on page 304
SETTINGS
	Language		See fig. 9
	Unit of measure		/
	Date setting		See fig. 10
	Time setting		See fig. 11

MAINTENANCE
	Test Mode	TEST Test Mode	See page 330
		Gas Type Selection	See fig. 70
		Test Cascade Test Mode	See fig. 82
	Service Information	See “Service Information” on page 305
	Service Intervention Date	See “Service Intervention Date” on page 304
SETTINGS
	Language		See fig. 9
	Unit of measure		/
	Date setting		See fig. 10
	Time setting		See fig. 11

Indication during operation

Heating

A heating request (generated by Room Thermostat or Remote Timer Control or 0-10 Vdc signal is indicated by activation of the circulating pump and by the hot air above the radiator (fig. 3).

"Heating only/Double circulating pump" configuration

fig. 3

"Circulating pump and 3-way valve" configuration

fig. 4

DHW circuit (with optional hot water tank installed)

A hot water tank heating request is indicated by activation of the droplet under the faucet (fig. 5 and fig. 6).

"Double circulating pump" configuration

fig. 5

"Circulating pump and 3-way valve" configuration

fig. 6

Exclude hot water tank (economy)

Hot water tank temperature maintaining/heating can be excluded by the user. If excluded, domestic hot water will not be delivered. The hot water tank can be deactivated by the user (ECO mode) by pressing the eco/comfort button (detail 10 - fig. 1). In ECO mode the display activates the symbol ☒ To activate COMFORT mode, press the eco/comfort button (detail 10 - fig. 1) again.

fig. 7- Economy

Information

From the main screen (Home - detail A of fig. 8), press contextual button 2. Access the screen for choosing the module with information to view.

Select the module using buttons 5 and 7 (detail B and C of fig. 8) and then press OK.

A

B

C

graph TD
    A["05\n0.01"] --> B["OK"]
    C["06\n0.34"] --> D["OK"]
    E["07\n0.01"] --> F["OK"]
    G["08\n0.01"] --> H["OK"]
    I["5"] --> J["OK"]
    K["ok to confirm"] --> L["OK to confirm"]

fig. 8
Then use the "Menu Navigation" buttons to display the following values:

1 Heating demand		OT - OpenTherm control request
		TA - Room thermostat request
		0-10Vdc - 0-10Vdc signal request
		TA2 - Second room thermostat request
2 Heating circulating pump ON/OFF
3 Heating 3-way valve ON/OFF
4 DHW 3-way valve ON/OFF
5 Standby time ON/OFF
6 T Delta protection ON/OFF
7 Flame Supervisor ON/OFF
8 Heating sensor 1 (Flow) °C
9 Heating sensor 2 (Safety) °C
10 Return sensor	°C
11 DHW sensor		°C
12 External probe	°C
13 Fume sensor °C
14 Cascade heating sensor	°C
15 Fan frequency	Hz
16 Burner load	%
17 System water pressure		1.4bar = ON, 0.0 bar = OFF
18 Modulating circulating pump	%
19 Cascade modulating circulating pump		%
20 Ionization current uA
21 Input 0-10Vdc	Vdc
22 Heating adjustment temperature	Setpoint (°C)
23 Power level adjustment 0-10Vdc	Setpoint (%)

1.3 Lighting and shutdown

Boiler lighting

Press the On/Off button (detail 14 - fig. 1).

X = 2 - MACH 150

X = 3 - MACH 225

X = 4 - MACH 300

X = 5 - MACH 370

X = 6 - MACH 450

X = 7 - MACH 520

X = 8 - MACH 600

fig. 9- Boiler ignition (X indicates the number of burners)

By pressing contextual button 1 it is possible to choose the desired language and confirm it with the "OK" button.

By pressing contextual button 3 it is possible to interrupt the FH mode.

If neither of the two choices described above is made, continue as follows.

• For the following 300 seconds the display will show FH which identifies the heating system air venting cycle.
- The display also shows the firmware version of the cards.
- Open the gas cock ahead of the boiler.
- When the message FH disappears, the boiler is ready to operate automatically in case of a room thermostat request.

Settings

Contrast adjustment

To adjust the display contrast, press the contextual button 2 and the OK button together. Then press the button ref. 5 of fig. 1 to increase the contrast or the button ref. 7 of fig. 1 to decrease it.

Date and Time Adjustment

Reach the screen shown in fig. 10, navigating in the menu and following the path "USER MENU Settings" "Date Setting". Press navigation buttons 5 and 7 to select the value and modify it with contextual buttons 1 and 2. Confirm with the OK button.

graph TD
    A["1"] --> B["2"]
    C["5"] --> D["3"]
    E["7"] --> F["4"]
    G["OK"] --> H["OK"]

fig. 10- Date Adjustment

Reach the screen shown in fig. 11, navigating in the menu and following the path "USER MENU Settings" Time Setting". Press navigation buttons 5 and 7 to select the value and modify it with contextual buttons 1 and 2. Confirm with the OK button.

fig. 11- Time Adjustment

Boiler shutdown

From the main screen/Home, press the contextual button and confirm with the button. OK

When the boiler is turned off, the PCB is still powered.

Domestic hot water (with optional hot water tank installed) and heating operation are disabled. The frost protection system remains on.

To relight the boiler, press the contextual button again

The boiler will be immediately ready to operate whenever domestic hot water is drawn (with optional hot water tank installed) or in case of a room thermostat request.

To completely disconnect the unit from the power supply, press the button detail 14 fig. 1.

fig. 12- Turning the boiler off

The frost protection system does not work when the power and/or gas to the unit are turned off. To avoid damage caused by freezing during long shutdowns in winter, it is advisable to drain all water from the boiler, the DHW circuit and the heating system water; or drain just the DHW circuit and add a suitable antifreeze to the heating system, as prescribed in sec. 2.3.

1.4 Adjustments

Summer/Winter Switchover

Press the button (detail 9 - fig. 1) for 1 second.

The display activates the Summer symbol. The heating function is deactivated while possible DHW production remains active (with optional external hot water tank). The frost protection system remains on.

To deactivate Summer mode, press the button (detail 9 - fig. 1) again for 1 second.

fig. 13- Summer

Heating temperature adjustment

Access the "Adjustment Temp" menu to vary the temperature from a minimum of 20 °C to a maximum of 90 °C. Confirm with the OK button.

The boiler comes with the time program not activated. Therefore, if requested, this is the setpoint value.

fig. 14

Heating temperature reduction

Access the "Reduction Adjustment Temp" menu to vary the temperature from a minimum of 0°C to a maximum of 50°. Confirm with the OK button.

This parameter is used only if time programming is activated. See "Time programming" on page 301

fig. 15

DHW temperature adjustment (with optional hot water tank installed)

Access the "Adjustment Temp" menu to vary the temperature from a minimum of 10^ to a maximum of 65^ . Confirm with the OK button.

The boiler comes with the time program not activated. Therefore, if requested, this is the setpoint value.

fig. 16

DHW temperature reduction (with optional hot water tank installed)

Access the "Reduction Adjustment Temp" menu to vary the temperature from a minimum of 0°C to a maximum of 50°C. Confirm with the OK button.

This parameter is used only if time programming is activated. See "Time programming" on page 301

fig. 17

Time programming

Time programming is done in the same way both for heating and for DHW; the two programs are independent.

To program Heating, access the "Time Program" menu by following the path "USER MENU ➔ "HEATING" ➔ "Time Program".

To program DHW, access the "Time Program" menu by following the path "USER MENU ➔ "DOMESTIC HOT WATER" ➔ "Time Program".

Choose the type of programming to carry out and follow that described below.

Select the day (fig. 18) or the interval of days to program (fig. 19) and confirm with the OK button.

fig. 18 fig. 19

The program is weekly: this means that 6 independent time bands can be set for each day of the week (fig. 20); 4 options can be chosen for each time band:

• ON. In case of a Heating/DHW request, the boiler works at the set Heating/DHW Adjustment Temperature (fig. 14/fig. 16).
• In case of a Heating/DHW request, the boiler works at the Reduced Adjustment Temperature. The Reduced temperature is obtained by subtracting the Reduction Adjustment Temperature (fig. 15/fig. 17) value from the set Heating/DHW Adjustment Temperature (fig. 14/fig. 16).
  • OFF. In case of a heating/DHW request, the boiler will not activate the Heating/DHW mode.
• -- : -- OFF. Time band disabled.

The boiler comes with the time program not activated. In fact, every day will be programmed from 00:00 to 24:00h in ON mode (fig. 20).

First, set the start time of the first time band (fig. 20) using contextual buttons 1 and 2.

fig. 20

Press navigation button 7 to go to the end time of the first time band (fig. 21) and set it to the desired value using contextual buttons 1 and 2.

fig. 21

Press navigation button 7 and use contextual buttons 1 and 2 to set the work mode during the first time band (fig. 22)

fig. 22

Then, press navigation button 7 to set (if necessary) the subsequent time bands (fig. 23, fig. 24 and fig. 25).

fig. 23 fig. 24

graph TD
    A["1"] --> B["2"]
    C["△"] --> D["OK"]
    E["7"] --> F["△"]

graph TD
    A["5"] --> B["6"]
    B --> C["OK"]
    C --> D["7"]

fig. 25

When the day has been programmed, press the OK button; the item "Save & Exit" will automatically be selected (fig. 26). Use navigation buttons 5 and 7 to modify the previous settings or press OK to confirm: in this case the display will return to showing the day (fig. 18) or the interval of days to be programmed (fig. 19). The same procedure can then be followed to complete the desired weekly program.

fig. 26

To program the following day in the same way, select "Copy to next day" and press OK to confirm (fig. 26).

To restore the time program to the factory values, press contextual button 3 in the Time Program menu (fig. 27) and confirm with OK.

fig. 27

The two Heating and DHW hourly programs are independent even in case of Reset to factory value.

Legionella programming (with optional hot water tank installed)

To enable the Anti-Legionella Function it is necessary to set parameter P23, within the "TECHNICAL MENU", to ON.

To program the function it is necessary to access the "Legionella" menu via the path "USER MENU" → "DOMESTIC HOT WATER" → "Legionella".

In this menu it is possible to set the following options:

• Anti-Legionella day. Defines the day of the week during which the function will be activated. The function can only be activated once a week.
  • Anti-Legionella time of day. Defines the start time of the function.
• Anti-Legionella duration. Defines the duration (in minutes) of the function.
• Anti-Legionella Adjustment Temp. Defines the DHW Adjustment temperature during the function.

ATTENTION

• In ECO mode the function is not active.
- The Anti-Legionella Function will only be active if the boiler is set to "Automatic" mode" (☐) and only in the time bands set to ON or to "Reduced temperature" (☐).
Otherwise, in the time bands set to OFF, the function will not be activated, even if set.
- In vacation mode (💡) the Anti-Legionella Function is active.

- If the Anti-Legionella Function is not carried out correctly, the message shown in fig. 28 is displayed. Even in the presence of this message, the boiler will continue to operate correctly.

fig. 28- Message Anti-legionella function not completed

The temperature set via the "Anti-Legionella Adjustment Temp." menu must NOT be higher than the maximum DHW adjustment temperature set via parameter P19 within the TECHNICAL MENU.

If a circulating pump is installed in the system, for water circulation during the Anti-Legionella Function, parameter b08 must be set to 1. In this way the contact between terminals 9-10 (ref. 300 - fig. 99) closes when the function is activated.

Holiday Function

Access the "HOLIDAY FUNCTION" menu through the path "USER MENU ➕ HOLIDAY FUNCTION" to set:

• Holiday start date.
• Holiday end date.

The display can activate two types of icons:

- The Holiday function is programmed but not yet active.

- The Holiday function is in progress. The boiler will behave as if Summer mode and Economy mode were active (with optional hot water tank installed).

The frost protection and Legionella functions will remain active (if activated).

Service Intervention Date

This informs when the alert of programmed maintenance by the technician will be activated. It does not represent an alarm or a fault but just a notice. After that date, whenever the Main menu is accessed, the boiler will activate a screen indicating that programmed maintenance is due.

Service Information

This information shows the telephone number to contact in case of assistance (if programmed by the technician).

Room temperature adjustment (with optional room thermostat)

Using the room thermostat, set the temperature required in the rooms.

Room temperature adjustment (with optional remote timer control)

Using the remote timer control, set the temperature desired in the rooms. The boiler unit will set the system water according to the required room temperature. For information on the remote timer control, please refer to its user's manual.

Sliding Temperature

When the external probe (optional) is installed, the relevant external temperature symbol is activated on the control panel display. The boiler control system works with "Sliding Temperature". In this mode, the heating system temperature is regulated according to weather conditions, to ensure high comfort and energy efficiency throughout the year. In particular, as the outside temperature increases the system flow temperature decreases according to a specific "compensation curve".

With Sliding Temperature adjustment, the "Heating adjustment" temperature becomes the maximum system flow temperature. It is advisable to set a maximum value to allow system adjustment throughout its useful operating range.

The boiler must be adjusted at the time of installation by qualified personnel. The user can still make further adjustments for better comfort.

Compensation curve and curve offset

Access the Sliding Temperature menu. Adjust the desired curve from 1 to 10 according to the characteristic (fig. 31) via the parameter "Curve1" and confirm with the OK button.

By setting the curve to 0, the sliding temperature adjustment is disabled.

fig. 29- Compensation curve

Adjust the parallel offset of the curves from 20 to 60 °C (fig. 32), via the parameter "Offset1" and confirm with the OK button.

fig. 30- Parallel curve offset

If the room temperature is lower than the desired value, it is advisable to set a higher order curve and vice versa. Proceed by increasing or decreasing in steps of one and check the result in the room.

fig. 31- Compensation curves

fig. 32- Example of compensation parallel curve offset

This parameter is used only if the time programming has been activated. See "Time programming" on page 301

Outside Temperature Heating OFF

Access the "Out Temp Heat Off" to activate the function: between 7°C and 30°C.

If activated, this function will deactivate the heating demand whenever the temperature measured by the external probe is higher than the programmed value.

The heating demand will be reactivated as soon as the temperature measured by the external probe is lower than the programmed value.

Adjustments from remote timer control

If the boiler is connected to the Remote Timer Control (optional), the previously described adjustments are managed as described in table 1.

Table 1

Heating temperature adjustment	Adjustment can be made from the Remote Timer Control menu and the boiler control panel.
DHW temperature adjustment (with optional hot water tank installed)	Adjustment can be made from the Remote Timer Control menu and the boiler control panel.
Summer/Winter Switchover	Summer mode has priority over a possible Remote Timer Control heating request.
Eco/Comfort selection (with optional hot water tank installed)	On disabling DHW from the Remote Timer Control menu, the boiler selects Economy mode. In this condition, the button detail 10 - fig. 1 on the boiler panel, is disabled.
	By enabling DHW from the Remote Timer Control menu, the boiler selects Comfort mode. In this condition, use the button detail 10 - fig. 1 on the boiler panel to select one of the two modes.
Sliding Temperature	Both the Remote Timer Control and the boiler card manage the Sliding Temperature adjustment: between the two, the Sliding Temperature of the boiler card has priority.

System water pressure adjustment

The filling pressure with the system cold must be approx. 1.0 bar. If the system pressure falls to values below minimum, the boiler card will activate fault 37 and the number of the module (fig. 33).

Once the system pressure is restored, the boiler will activate the 300-second air venting cycle indicated on the display by FH.

fig. 33- Module 1 insufficient system pressure fault

2. Installation

2.1 General Instructions

BOILER INSTALLATION MUST ONLY BE PERFORMED BY QUALIFIED PERSONNEL, IN ACCORDANCE WITH ALL THE INSTRUCTIONS GIVEN IN THIS TECHNICAL MANUAL, THE PROVISIONS OF CURRENT LAW, THE PRESCRIPTIONS OF NATIONAL AND LOCAL STANDARDS AND THE RULES OF PROPER WORKMANSHIP.

2.2 Place of installation

Handling

To remove the boiler from the packing base, use a forklift truck with external distance between the forks of not less than 650 mm.

Technical line drawing of a rectangular industrial machine with mounting base and side supports (no text or symbols)

Positioning

The generator must be installed in a suitable room with ventilation openings towards the outside in conformity with current regulations. If there are several burners or exhausters that can work together in the same room, the ventilation openings must be sized for simultaneous operation of all the units. The place of installation must be free of flammable materials or objects, corrosive gases, powders or volatile substances. The room must be dry and not exposed to rain, snow or frost. For positioning, leave enough space around the unit for normal maintenance operations (see fig. 34).

fig. 34- Positioning with distances to be respected

2.3 Plumbing connections

For correct operation it is necessary to install a hydraulic separator between the unit and the system as indicated in fig. 35.

A pump external to the unit must not be used in the generator hydraulic loop (1), as the circulation of heat transfer fluid in the loop (1) is ensured by the circulating pumps inside the unit and managed by its control system. An adequately sized external pump must be provided for circulation only in the system hydraulic loop (2).

graph TD
    A["Top Component"] --> B["Valve 1"]
    B --> C["Valve 2"]
    C --> D["Valve 3"]
    D --> E["Valve 4"]
    E --> F["Valve 5"]
    F --> G["Valve 6"]
    G --> H["Valve 7"]
    H --> I["Valve 8"]
    I --> J["Valve 9"]
    J --> K["Valve 10"]
    K --> L["Valve 11"]
    L --> M["Valve 12"]
    M --> N["Valve 13"]
    N --> O["Valve 14"]
    O --> P["Valve 15"]
    P --> Q["Valve 16"]
    Q --> R["Valve 17"]
    R --> S["Valve 18"]
    S --> T["Valve 19"]
    T --> U["Valve 20"]
    U --> V["Valve 21"]
    V --> W["Valve 22"]
    W --> X["Valve 23"]
    X --> Y["Valve 24"]
    Y --> Z["Valve 25"]

fig. 35

The unit's internal circulating pumps are sized for circulation only in the generator hydraulic loop, and cannot be used for direct circulation in systems without a hydraulic separator.

The heating capacity of the unit must be previously established by calculating the building's heat requirement according to current regulations. The system must be provided with all the components for correct and regular operation. In particular, provide for all the protection and safety devices required by current regulations. They must be installed on the hot water circuit flow piping, upstream of the hydraulic separator, within a distance of not more than 0.5 m, without interposing shutoff devices. The unit is not supplied with an expansion vessel or safety valve, therefore their connection must be carried out by the installer.

The safety valve outlet must be connected to a funnel or collection pipe to prevent water spurting onto the floor in case of overpressure in the heating circuit. Otherwise, if the discharge valve cuts in and floods the room, the boiler manufacturer cannot be held liable.

Do not use the water system pipes to ground electrical appliances.

Before installation, flush all the pipes of the system thoroughly to remove any residuals or impurities that could affect proper operation of the unit. Use chemical conditioners suitable for the purpose; i.e. able to remove from the walls and bottom of the pipes and the various components of the system, sludge, metal oxides and, in low temperature systems, also biomass, with just the circulation of the water, with system hot and/or cold. The products used must not be corrosive and/or aggressive for metals and plastics and must not significantly alter the natural pH of the water.

Also, a filter must be installed on the system return piping to prevent impurities or sludge from the system clogging and damaging the heat generators.

The filter must be installed when replacing generators in existing systems. The manufacturer declines any liability for damage caused to the generator by failure to install or inadequate installation of this filter.

Make the connections to the corresponding connections according to the drawing in fig. 36.

fig. 36

Table 2- SIZE OF CONNECTIONS

10 - System flow	DN65 flanged
11 - System return	DN65 flanged
7 - Gas inlet	DN40 flanged
a4 - Flue connection ∅200

System water characteristics

Before installing the MACH generator, the new or existing system must be properly cleaned in order to eliminate installation residues, solvents, sludge and contaminants in general that may compromise the effectiveness of the protective conditioning treatments. Use neutral cleaning products that do not attack metals, rubber and plastic parts of the generator/system. Empty, wash and recharge the system in compliance with the following instructions. A dirty system will not guarantee the life of the generator over time, even with the use of protective conditioners.

MACH boilers are suitable for installation in heating systems with non-significant entry of oxygen (ref. systems "case I" EN14868). A physical separator (e.g. plate heat exchanger) must be provided in systems with continuous entry of oxygen (e.g. underfloor systems without anti-diffusion pipes or open vessel), or frequent (frequent water replenishment).

The water in a heating system must be treated in compliance with the laws and regulations in force, have the characteristics required by UNI 8065, and comply with the provisions of EN14868 (protection of metallic materials against corrosion).

The filling water (first filling and subsequent replenishments) must be potable, clear, with hardness under the values indicated in the table below and treated and conditioned with chemical conditioners declared suitable by the maker (see following list), in order to prevent encrustations, corrosive or aggressive phenomena on the metals and plastics of the generator and system, the formation of gas, and the proliferation of bacterial or microbial masses in low temperature systems.

The water contained in the system, as well as the replenishment water, must be checked periodically (at every start-up of the system, after any non-scheduled intervention such as, for example, replacement of the generator or other system

components, as well as at least once a year during mandatory routine maintenance operations as required by UNI 8065). The water must have a clear appearance and respect the limits given in the following table.

	EXISTING SYSTEM NEW SYSTEM
WATER PARAMETER
Total filling water hardness (°f) <10 <10
Total system water hardness (°f) <15 <10
PH 7 < Ph < 8.5
Copper Cu (mg/l) Cu < 0.5 mg/l
Iron Fe (mg/l) Fe < 0.5 mg/l
Chlorides (mg/l) Cl < 50 mg/l
Conductivity (μS/cm) < 600 μS/cm*
Sulfates < 100 mg/l
Nitrates < 100 mg/l

* In the presence of conditioners, the limit increases to 1200 μS/cm.

In case of differing values or difficult verification of values with conventional analysis/testing procedures, contact the company for additional evaluations. The conditions of the feed water to be treated can vary even significantly depending on the geographical areas where the systems are located.

Chemical conditioners deoxygenating, anti-scaling, corrosion inhibiting, anti-bacterial, anti-algae, frost protection, PH correction products, etc., must also be suitable for the materials of the generator and system. They must be put in the system respecting the quantity indicated by the supplier of the chemical product and verified in their concentration.

A chemical conditioner in insufficient concentration will not be able to ensure the required protection.

Always check the product concentration each time it is added and cyclically, at least once a year, using qualified technical personnel such as our authorized technical assistance network.

Table 3- Chemical conditioners declared suitable and available at our network of Authorized Technical Assistance Centers

	Description	Sentinel type alternative products
LIFE PLUS/B - MOLY - MOLY K	Molybdenum-based corrosion inhibitor	X100
LIFE DUE	Noise reduction/anti-scaling maintenance	X200
BIO KILL	Biocidal anti-algae	X700
PROGLI	Propylene frost protection	X500
Products with equivalent characteristics may be used

The unit is equipped with a frost protection system that activates the boiler in heating mode when the flow water temperature falls below 5^ C. The device is not active if the electrical and/or gas supply to the unit is disconnected. If necessary, to protect the system use a suitable antifreeze liquid that meets the above requirements and provided for by UNI 8065.

To ensure the reliability and correct operation of the boilers, always install a mechanical filter in the loading circuit and, in the system, a dirt separator (possibly magnetic) and a deaerator as required by the UNI 8065 as well as a volumetric meter on the system replenishment line.

Failure to comply with the provisions of this paragraph, "System water features", will involve non-recognition of the warranty and damage due to such shortcomings.

Hydraulic circuit examples

In the examples described below, the checking/change of some parameters may be required.

To do this it is necessary to access the Technical menu.

From the Home page, press the main Menu button (detail 12 - fig. 1).

Access the "Technical" menu by pressing contextual button 2 (detail 2 - fig. 1).

fig. 37

Enter the code "4 1 8" with contextual buttons 1 and 2. Confirm each number with the OK button.

fig. 38

Access the Parameters menu by pressing the OK button.

fig. 39

Access the "Configuration Menu" or "System Type Menu" according to the parameter to be modified as given in each hydraulic circuit example.

fig. 40

Two direct heating circuits

- Schematic diagram

graph TD
    A["138"] --> B["M"]
    B --> C["I*"]
    C --> D["Valve"]
    D --> E["Sensor"]
    E --> F["Valve"]
    F --> G["Sensor"]
    G --> H["Valve"]
    H --> I["Sensor"]
    I --> J["Valve"]
    J --> K["Sensor"]
    K --> L["Valve"]
    L --> M["Sensor"]
    M --> N["Valve"]
    N --> O["Sensor"]
    O --> P["Valve"]
    P --> Q["Sensor"]
    Q --> R["Valve"]
    R --> S["Sensor"]
    S --> T["Valve"]
    T --> U["Sensor"]
    U --> V["Valve"]
    V --> W["Sensor"]
    W --> X["Valve"]
    X --> Y["Sensor"]
    Y --> Z["Valve"]
    Z --> AA["Sensor"]
    AA --> AB["Valve"]
    AB --> AC["Sensor"]
    AC --> AD["Valve"]
    AD --> AE["Sensor"]
    AE --> AF["Valve"]
    AF --> AG["Sensor"]
    AG --> AH["Valve"]
    AH --> AI["Sensor"]
    AI --> AJ["Valve"]
    AJ --> AK["Sensor"]
    AK --> AL["Valve"]
    AL --> AM["Sensor"]
    AM --> AN["Valve"]
    AN --> AO["Sensor"]
    AO --> AP["Valve"]
    AP --> AQ["Sensor"]
    AQ --> AR["Valve"]
    AR --> AS["Sensor"]
    AS --> AT["Valve"]
    AT --> AU["Sensor"]
    AU --> AV["Valve"]
    AV --> AW["Sensor"]
    AW --> AX["Valve"]
    AX --> AY["Sensor"]
    AY --> AZ["Valve"]
    AZ --> BA["Sensor"]
    BA --> BB["Valve"]
    BB --> BC["Sensor"]
    BC --> BD["Valve"]
    BD --> BE["Sensor"]
    BE --> BF["Valve"]
    BF --> BG["Sensor"]
    BG --> BH["Valve"]
    BH --> BI["Sensor"]
    BI --> BJ["Valve"]
    BJ --> BK["Sensor"]
    BK --> BL["Valve"]
    BL --> BM["Sensor"]
    BM --> BN["Valve"]
    BN --> BO["Sensor"]
    BO --> BP["Valve"]
    BP --> BQ["Sensor"]
    BQ --> BR["Valve"]
    BR --> BS["Sensor"]
    BS --> BT["Valve"]
    BT --> BU["Sensor"]
    BU --> BV["Valve"]

fig. 41

- Electrical connections

After installation, carry out the necessary electrical connections as shown in the wiring diagram.

Then configure the controller as described in the specific section.

fig. 42

Legend (fig. 41 and fig. 42)

72 1st zone (direct) room thermostat

72b 2nd zone (direct) room thermostat

138 External probe

307 1st zone (direct) circulating pump

306 2nd zone (direct) circulating pump

to 1st zone (direct)

b 2nd zone (direct)

M Flow

R Return

I* ISPESL safety devices

(When required. Not supplied)

To manage the sliding temperature it is necessary to purchase the external probe accessory code 013018X0

- Parameters

Each system requires a different parameterization. Follow the access procedure given below.

"System Type Menu"

Change parameter P.01 of the "System Type Menu" to 4.

- Optional features

In addition to the electrical connections of the previous figure (necessary for this system configuration) there are options that do not require settings.

fig. 43

Legend

139 Remote control: it can be installed instead of 72 to manage the request of the 1st zone (direct)
300 Burner on indication (voltage-free contact output): the example shows the connection of a 230 Vac hour meter
301 Fault indication (voltage-free contact output): the example shows the connection of a 230Vac lamp
302 Remote reset input (230Vac): the example shows the connection of a double-pole switch at 230Vac, allowing the resetting of a block type fault
357 Fault indication (230Vac): the example shows the connection of a 230Vac lamp

One direct heating circuit and one DHW circuit with circulating pump

- Schematic diagram

graph TD
    A["138"] --> B["M"]
    B --> C["R"]
    C --> D["I*"]
    D --> E["Valve"]
    E --> F["72"]
    F --> G["a"]
    G --> H["155"]
    H --> I["b"]
    I --> J["300"]
    J --> K["130 306"]
    K --> L["Valve"]
    style A fill:#f9f,stroke:#333
    style B fill:#ccf,stroke:#333
    style C fill:#cfc,stroke:#333
    style D fill:#fcc,stroke:#333
    style E fill:#cff,stroke:#333
    style F fill:#ffc,stroke:#333
    style G fill:#cfc,stroke:#333
    style H fill:#fcc,stroke:#333
    style I fill:#cfc,stroke:#333
    style J fill:#fcc,stroke:#333
    style K fill:#cfc,stroke:#333

fig. 44

- Electrical connections

After installation, carry out the necessary electrical connections as shown in the wiring diagram. Then configure the controller as described in the specific section.

fig. 45

Legend (fig. 44 and fig. 45)

72 1st zone (direct) room thermostat

130 Hot water tank circulating pump

138 External probe

155 Hot water tank probe

300 Anti-Legionella circulating pump

306 1st zone (direct) circulating pump

to 1st zone (direct)

b Hot water tank circuit

M Flow

R Return

I* ISPESL safety devices

(When required - not supplied)

To manage the sliding temperature it is necessary to purchase the external probe accessory code 013018X0

If a hot water tank probe (not supplied) is used, it is necessary to purchase the NTC probe accessory code 1KWMA11W (2 mt.) or code 043005X0 (5 mt.)

If a hot water tank thermostat (not supplied) is used, it is necessary to purchase the accessory kit code 013017X0 (to be connected in place of the Hot Water Tank Probe)

- Parameters

Each system requires a different parameterization. Follow the access procedure given below.

"Configuration - Parameters Menu"

Check/Change parameter b02 of the "Transparent Parameters Menu" to 8.

Check/Change parameter b08 of the "Transparent Parameters Menu" to 1.

Check/Change parameter b04, b05 and b06 of the "Transparent Parameter Menu" according to the values given in the table "Configuration - Parameters Menu" on page 334.

- Optional features

In addition to the electrical connections of the previous figure (necessary for this system configuration) there are options that do not require settings.

fig. 46

Legend

139 Remote control: it can be installed instead of 72 to manage the request of the 1st zone (direct)
301 Fault indication (voltage-free contact output): the example shows the connection of a 230Vac lamp
302 Remote reset input (230Vac): the example shows the connection of a double-pole switch at 230Vac, allowing the resetting of a block type fault
357 Fault indication (230Vac): the example shows the connection of a 230Vac lamp

A direct heating circuit and a DHW circuit with diverter valve (3-wire)

- Schematic diagram

Use diverter valves with 3 wires:

• 230V OPENING PHASE
• 230V CLOSING PHASE
• NEUTRAL

with switching times (from all closed to all open) of not more than 90 seconds.

graph TD
    A["138"] --> B["Process Unit"]
    B --> C["M"]
    C --> D["I*"]
    D --> E["Valve"]
    E --> F["Valve"]
    F --> G["Valve"]
    G --> H["Valve"]
    H --> I["Valve"]
    I --> J["Valve"]
    J --> K["Valve"]
    K --> L["Valve"]
    L --> M["Valve"]
    M --> N["Valve"]
    N --> O["Valve"]
    O --> P["Valve"]
    P --> Q["Valve"]
    Q --> R["Valve"]
    R --> S["Valve"]
    S --> T["Valve"]
    T --> U["Valve"]
    U --> V["Valve"]
    V --> W["Valve"]
    W --> X["Valve"]
    X --> Y["Valve"]
    Y --> Z["Valve"]
    Z --> AA["Valve"]
    AA --> AB["Valve"]
    AB --> AC["Valve"]
    AC --> AD["Valve"]
    AD --> AE["Valve"]
    AE --> AF["Valve"]
    AF --> AG["Valve"]
    AG --> AH["Valve"]
    AH --> AI["Valve"]
    AI --> AJ["Valve"]
    AJ --> AK["Valve"]
    AK --> AL["Valve"]
    AL --> AM["Valve"]
    AM --> AN["Valve"]
    AN --> AO["Valve"]
    AO --> AP["Valve"]
    AP --> AQ["Valve"]
    AQ --> AR["Valve"]
    AR --> AS["Valve"]
    AS --> AT["Valve"]
    AT --> AU["Valve"]
    AU --> AV["Valve"]
    AV --> AW["Valve"]
    AW --> AX["Valve"]
    AX --> AY["Valve"]

fig. 47

Legend (fig. 47 and fig. 48)

32 Heating circulating pump
72 1st zone (direct) room thermostat
138 External probe
155 Hot water tank probe
348 3-way valve (3-wire)

$$ A = O P E N I N G P H A S E $$

$$ B = N E U T R A L $$

$$ C = C L O S I N G P H A S E $$

to 1st zone (direct)

b Hot water tank circuit
M Flow
R Return
K1 - K2coil 230 Vac, <2.2 VA

$$ \text { contact } 2 3 0 \mathrm{Vac}, > 8 \mathrm{A} $$

I* ISPESL safety devices

$$ (\text { When required - not supplied }) $$

- Electrical connections

After installation, carry out the necessary electrical connections as shown in the wiring diagram.

Then configure the controller as described in the specific section.

To avoid damaging the board, it is advisable to use external relays to control the 3-way valve, as indicated in fig. 48.

fig. 48

To manage the sliding temperature it is necessary to purchase the external probe accessory code 013018X0

If a hot water tank probe (not supplied) is used, it is necessary to purchase the NTC probe accessory code 1KWMA11W (2 mt.) or code 043005X0 (5 mt.)

If a hot water tank thermostat (not supplied) is used, it is necessary to purchase the accessory kit code 013017X0 (to be connected in place of the Hot Water Tank Probe)

- Parameters

Each system requires a different parameterization. Follow the access procedure given below.

"Configuration - Parameters Menu"

Check/Change parameter b02 of the "Configuration - Parameters Menu" to 9.

Check/Change parameter b04, b05 and b06 of the "Configuration - Parameters Menu" according to the values given in the table "Configuration - Parameters Menu" on page 334.

- Optional features

In addition to the electrical connections of the previous figure (necessary for this system configuration) there are options that do not require settings.

fig. 49

Legend

139 Remote control: it can be installed instead of 72 to manage the request of the 1st zone (direct)
300 Burner on indication (voltage-free contact output): the example shows the connection of a 230Vac hour meter
301 Fault indication (voltage-free contact output): the example shows the connection of a 230Vac lamp
302 Remote reset input (230Vac): the example shows the connection of a double-pole switch at 230Vac, allowing the resetting of a block type fault
357 Fault indication (230Vac): the example shows the connection of a 230Vac lamp

Two mixed heating circuits, one direct heating circuit and one DHW circuit with circulating pump

- Schematic diagram

The FZ4B zone control board can manage different types of systems. An example is given.

Use diverter valves with 3 wires: OPENING PHASE 230V - CLOSING PHASE 230V - NEUTRAL, with switching times (from fully closed to fully open) not exceeding 180 seconds

graph TD
    A["138"] --> B["FZ4B"]
    B --> C["72/139a"]
    B --> D["72/139b"]
    B --> E["72/139c"]
    C --> F["317a"]
    D --> G["317b"]
    E --> H["318a"]
    E --> I["318b"]
    E --> J["318c"]
    F --> K["315a"]
    G --> L["315b"]
    H --> M["319a"]
    I --> N["319b"]
    J --> O["318c"]
    K --> P["a"]
    L --> Q["b"]
    M --> R["c"]
    N --> S["d"]
    O --> T["d"]
    U["I*"] --> V["M"]
    W["R"] --> X["M"]
    Y["300"] --> Z["155"]

fig. 50

Legend (fig. 50 and fig. 51)

72a 1st zone (mixed) room thermostat

72b 2nd zone (mixed) room thermostat

72c 3rd zone (direct) room thermostat

130 Hot water tank circulating pump

138 External probe

139a 1st zone (mixed) Remote Timer Control

139b 2nd zone (mixed) Remote Timer Control

139c 3rd zone (direct) Remote Timer Control

155 Hot water tank probe

300 Anti-Legionella circulating pump

315a 1st zone (mixed) mixing valve

A = OPENING PHASE

B = NEUTRAL

C = CLOSING PHASE

315b 2nd zone (mixed) mixing valve

A = OPENING PHASE

B = NEUTRAL

C = CLOSING PHASE

317a 1st zone (mixed) safety thermostat

317b 2nd zone (mixed) safety thermostat

318a 1st zone (mixed) circulating pump

318b 2nd zone (mixed) circulating pump

318c 3rd zone (direct) circulating pump

319a 1st zone (mixed) flow sensor

319b 2nd zone (mixed) flow sensor

M Flow

R Return

a 1st zone (mixed)

b 2nd zone (mixed)

c 3rd zone (direct)

d Hot water tank circuit)

I* ISPESL safety devices (When required - not supplied

- Electrical connections

After installation, carry out the necessary electrical connections as shown in the wiring diagram.

Then configure the controller as described in the specific section.

fig. 51

To manage the sliding temperature it is necessary to purchase the external probe accessory code 013018X0

If a hot water tank probe (not supplied) is used, it is necessary to purchase the NTC probe accessory code 1KWMA11W (2 mt.) or code 043005X0 (5 mt.)

If a hot water tank thermostat (not supplied) is used, it is necessary to purchase the accessory kit code 013017X0 (to be connected in place of the Hot Water Tank Probe)

- Parameters

Each system requires a different parameterization. Follow the access procedure given below.

"Configuration - Parameters Menu"

Check/Change parameter b02 of the "Configuration - Parameters Menu" to 9.

Check/Change parameter b08 of the "Configuration - Parameters Menu" to 1.

Check/Change parameter b04, b05 and b06 of the "Configuration - Parameters Menu" according to the values given in the table "Configuration - Parameters Menu" on page 334.

- Parameters FZ4B

See relevant manual in Kit.

- Optional features

In addition to the electrical connections of the previous figure (necessary for this system configuration) there are options that do not require settings.

Legend (fig. 52)

301 Fault indication (voltage-free contact output): the example shows the connection of a 230Vac lamp
302 Remote reset input (230Vac): the example shows the connection of a double-pole switch at 230Vac, allowing the resetting of a block type fault
357 Fault indication (230Vac): the example shows the connection of a 230Vac lamp

fig. 52

2.4 Gas connection

Before making the connection, check that the unit is arranged for operation with the type of fuel available and carefully clean all the system gas pipes to remove any residues that could affect proper functioning of the boiler.

Make sure all the gas connections are tight. The gas meter capacity must be suitable for the simultaneous use of all the units connected to it. The diameter of the gas pipe leaving the boiler is not decisive for choosing the diameter of the pipe between the unit and the meter; it must be chosen according to its length and pressure losses, in conformity with the current regulations.

Do not use the gas pipes to ground electrical appliances.

2.5 Electrical connections

Connection to the power supply

Electrical safety of the unit is obtained only when it is correctly connected to an effective grounding system as required by current safety standards. Have the efficiency and suitability of the grounding system checked by professionally qualified personnel; the Manufacturer declines any liability for damage caused by failure to ground the system. Also make sure the electrical system is adequate for the maximum power absorbed by the unit, as specified on the boiler data plate.

The boiler is pre-wired and equipped with a "Y" type connection cable to the electric line without plug. The connections to the mains must be made with a fixed connection and equipped with a double-pole switch with contact opening gap of at least 3 mm, interposing 16 A fuses max. between boiler and line. It is important to respect the polarity (LINE: brown wire / NEUTRAL: blue wire / GROUND: yellow-green wire) in the connections to the power line. When installing or replacing the power cable, the ground wire must be left 2 cm longer than the others.

The unit's power cable must not be replaced by the user. If the cable gets damaged, turn the unit off and have the cable replaced only by professionally qualified personnel. In case of power supply cable replacement, use only cable "HAR H05VV-F" 3 x 1.5 mm ^2 with a maximum external diameter of 8 mm.

Room thermostat (optional)

CAUTION: The room thermostat must have clean contacts. CONNECTING 230 V. TO THE TERMINALS OF THE ROOM THERMOSTAT WILL IRREPARABLY DAMAGE THE ELECTRONIC CARD.

When connecting a remote timer control or a timer switch, do not take the power supply for these devices from their cut-out contacts. Their power supply must be taken with a direct connection from the mains or with batteries, depending on the kind of device.

External probe (optional)

Connect the probe to its respective terminals. The maximum permissible length of the boiler – external probe connection electric cable is 50 m. A common 2-core cable can be used. The external probe should preferably be installed on the North, North-West wall or on the wall with most of the main living room. The probe must never be exposed to the sun in the early morning, and in general, as far as possible, it must not receive direct solar radiation; if necessary, it must be protected. In any case, the probe must never be mounted near windows, doors, ventilation openings, flues or heat sources that could affect the reading.

Pure electrical circuit lines without any symbols

fig. 53- Positioning of external probe not recommended

Accessing the electrical terminal block

To access the electrical terminal block, lift the top panel and rotate the panel. Make the electrical connections as shown in the wiring diagram on fig. 99 and run the cables through the special cable glands.

fig. 54

Technical line drawing of a mechanical assembly with no visible text or symbols

fig. 56

Technical line drawing of an industrial machine with internal components and directional arrows indicating flow or movement (no text or symbols present)

fig. 55

Technical line drawing of an industrial machine with internal components and piping (no text or symbols)

fig. 57

fig. 58- Electrical terminal block

A Maximum applicable loads:

• Heating circulating pump: 230Vac 0.8A max, C=0.6
- 3-way valve: 230 Vac, 0.8 A max, COS = 0.6 for max 1 minute, 0.4 A continuous
• Alarm: 230 Vac, 0.8 A max, G06

2.6 Flue connection

Important

The unit is a B23-type with combustion air drawn from the place of installation, and fume exhaust by means of a fan (operation with flue pressurised), and must be connected to one of the discharge systems indicated below. Before proceeding with installation, check and carefully comply with the local regulations and provisions. Also, comply with the provisions on the positioning of wall and/or roof terminals and the minimum distances from windows, walls, ventilation openings, etc.

Manifold, ducts and flue must be suitably sized, designed and made in compliance with the current regulations. They must be made of suitable materials, i.e. resistant to heat and corrosion, smooth on the inside and tight. In particular, joints must be condensate proof. Also, provide for adequate condensate drainage points, connected to a trap to prevent the condensate formed in the flues from running into the generators.

Connection

Every unit has two flue connections in order to offer greater flexibility in installation. Use only one of the outlets and check that the other is properly plugged (see fig. 59 - fig. 60 - fig. 61).

Technical line drawing of a mechanical device with cylindrical components and mounting flanges (no text or symbols)

fig. 59

Line drawing of a rectangular industrial machine with cylindrical components and wheels, no text or symbols present

fig. 60

Technical line drawing of a mechanical device with cylindrical components and mounting flanges (no text or symbols)

fig. 61

Before making the flue connection fill the condensate trap with approx. 0.5 liters of water through the flue connections.

To calculate the maximum length of the fume ducts, refer to the maximum available head.

Maximum flue head = 185 Pa

2.7 Condensate drain connection

The boiler has a trap to drain condensate.

ATTENTION: The unit must never be operated with the trap empty!

Technical line drawing of a mechanical assembly with multiple components and mounting feet (no text or symbols)

fig. 62- Condensate drain connection

Neutralizer kit

The following condensate neutralizer kits are available on request:

code 051000X0 up to 320 kW

code 051001X0 up to 320 kW (with pump)

code 051002X0 up to 1500 kW

code 051003X0 up to 1500 kW (with pump)

Connect these neutralizers directly to the boiler drain without interposing the trap. The trap function is performed by the neutralizer itself.

3. Service and maintenance

All adjustment, conversion, commissioning and maintenance operations described below must only be carried out by Qualified Personnel (meeting the professional technical requirements of current regulations) such as the personnel of the Local After-Sales Technical Service.

FERROLI declines any liability for damage and/or injury caused by unqualified and unauthorized persons tampering with the unit.

3.1 Adjustments

Gas conversion

The unit can run on natural gas or LPG and is factory-set for use with one of these two gases, as clearly shown on the packing and on the data plate. Whenever a different gas to that for which the unit is set has to be used, the special conversion kit will be required, proceeding as follows:

DISCONNECT THE POWER and GAS to the boiler.

1. Remove the panels (see fig. 86).
2. Undo the screw "E" and remove the control unit from the gas valve (fig. 63).

1. Remove the compensation tube "N" and loosen the screw "H" (see fig. 64).

fig. 64

1. Rotate and remove the silencer "L" (see fig. 65).

Technical line drawing of a mechanical assembly with a rotating component and directional arrows (no text or symbols)

fig. 65

1. Loosen the swivels and disconnect the gas pipe "A" together with the cock "B" (fig. 66).

fig. 66

1. Remove the "Venturi Group" from the fan by undo- ing the two screws "F" (fig. 67).

Technical line drawing of a mechanical pump assembly with mounting flanges and a labeled component 'F' (no text or symbols beyond label)

fig. 67

1. Remove the Venturi "V" by undoing the 3 screws (see fig. 68).

Replace the gas nozzle "C", positioning it inside the gasket "D", with that contained in the conversion kit (see fig. 68). Reassemble the "Venturi Group" and secure it to the fan (see fig. 68 and fig. 67).

fig. 68

1. In case of conversion to LPG, it is necessary to insert the nozzle "M" between the cock "B" and the gas manifold (fig. 69).

Reassemble the cock "B" on the gas manifold.

ATTENTION: The nozzle "M" (see fig. 69) must not be inserted with the unit running on Natural Gas.

ATTENTION: The chamfer of the diaphragm must face the gas manifold.

fig. 69- Nozzle for use with LPG

1. Reassemble all the components and check the seals.

2. Repeat the operations from point 3 to point 9 for each module.

3. Modify the parameter for the type of gas as described below.

Reach the screen shown in fig. 70, navigating in the menu and following the path "USER MENU → Maintenance Test Mode Gas Type Selection". Press contextual buttons 1 and 2 to select the type of gas. Confirm with the OK button.

fig. 70 - Gas type selection

1. Apply the label, contained in the conversion kit, near the data plate.

Activation of TEST mode and combustion control of the individual modules

Press the button

fig. 71

Using buttons 5 and 7, select the Test Mode menu.

Press OK

fig. 72

Using contextual buttons 1 and 2, select the number of the module control unit. Press OK

graph TD
    A["Centralina modulo"] --> B["1"]
    B --> C["ok per confermare"]
    D["1"] --> E["2"]
    F["2"] --> G["OK"]

fig. 76

Using buttons 5 and 7, select the Maintenance menu. Press OK

fig. 73

The boiler ignites, reaching maximum heating power (Range Rated).

fig. 77- TEST mode (ex. heating power = 80%)

Using buttons 5 and 7, select the Test Mode menu.

Press OK

CO _2 control and measurement

The sampling of combustion fumes must be done by inserting the analyzer probe into the fumes outlet of the single module (see fig. 78).

AVOID SAMPLING FUMES FROM THE FLUE as the returned value will not be correct.

After performing the combustion analysis, always close the fumes outlet.

OTHERWISE, THERE IS A DANGER OF ASPHYSIA DUE TO COMBUSTION FUMES ESCAPING.

Technical line drawing of industrial piping and valves with a black arrow indicating direction (no text or symbols)

fig. 78- Single module fumes outlet

CO _2 measurement and adjustment at maximum heating capacity

• Using contextual button 1 (+) bring the value to 100%.
- Insert a combustion analysis instrument in the fumes outlet (see fig. 78).
- Check that the CO 2 value corresponds to: 9.1 % for Natural Gas 10.5 % for Propane Gas
- If the values do not correspond to those indicated, adjust the CO2 with the adjustment screw (see fig. 79), bringing them back to those indicated.

Technical line drawing of a mechanical assembly with no visible text or symbols

fig. 79- Maximum capacity adjustment screw

Adjusting the CO_2 at minimum heating capacity

• Using contextual button 2 (-) bring the lue to 0%.
• Insert a combustion analysis instrument in the fumes outlet (see fig. 78).
• Check that the CO _2 value corresponds to: 8.5 % for Natural Gas 10.0 % for Propane Gas
• If the values do not correspond to those indicated, adjust the CO_2 with the OFFSET adjustment screw (see fig. 80), bringing them back to those indicated.

Technical line drawing of a mechanical assembly with no visible text or symbols

fig. 80-OFFSET minimum capacity adjustment screw

REPEAT THE ENTIRE COMBUSTION CHECK PROCEDURE FOR ALL BOILER MODULES.

To exit the TEST mode, only use the "Stop Test" contextual button.

The TEST mode is automatically disabled in any case after 15 minutes.

DO NOT TURN OFF THE BOILER ELECTRICALLY DURING THE TEST.

Otherwise, when the power is switched on again, the system starts to work as if still in TEST mode and not like for a normal heating request.

Check of simultaneous activation of all modules

Within the Test Mode menu screen, select TEST (See fig. 82). Press OK

Using contextual button 2 immediately bring the value (-), to 0%

PREVENT THE BOILER FROM IMMEDIATELY OPERATING AT MAXIMUM POWER.

INCREASE THE POWER SLOWLY TO AVOID THERMAL SHOCK.

Reach the value of 100% power in a time of 2-3 minutes.

fig. 83

With all modules on at the same power (maximum or minimum), combustion can be checked at the boiler flue outlet.

Heating Capacity Adjustment (RANGE RATED)

This is a “RANGE RATED” boiler (according to EN 15502) and can be adjusted to the system's thermal requirement by setting the maximum heating capacity for operation in heating mode, as follows:

• Put the boiler in TEST mode (see sec. 3.1).
• Press the contextual buttons 1 and 2 to increase or decrease the heating capacity (minimum = 00 - maximum = 100). See the diagram “Heating Capacity Adjustment” (fig. 84).
• By pressing the OK button (detail 6 - fig. 1) the maximum heating capacity will remain that just set. Exit TEST mode (see sec. 3.1).

After setting the desired heating capacity, write the value on the sticker provided and place it on the boiler under the data plate. For subsequent checks and adjustments, refer to the set value.

THE HEATING CAPACITY ADJUSTMENT THUS MADE ENSURES THE EFFICIENCY VALUES DECLARED IN cap. 4.4 "Technical data table"

Heating capacity adjustment diagram

A = kW - B = Electronic Board Parameter

B

fig. 84

TECHNICAL MENU

ONLY QUALIFIED PERSONNEL CAN ACCESS THE SERVICE MENU AND MODIFY PARAMETERS.

Accessing the Technical Menu is only possible after entering the code 4 1 8. It is valid for 15 minutes.

To copy a parameter to the other boiler modules, select the parameter from the list, press OK to enter the parameter and then press the button ECO/COMF (fig. 85). In this way the parameter is replicated on all modules.

It is advisable to make the various modules work with the same parameter values, in order to have optimal balance of the working point.

fig. 85

Configuration - Parameters Menu

19 parameters are available, indicated by the letter "b", which are not modifiable from Remote Timer Control.

Table 4- Parameters - Configuration

Parameter Description Range
b01 Gas type selection Natural Gas/LPG Natural gas
b02 Boiler type selection		1 = Heating only2 = Combi with storage tank with double pump3 = Combi with storage tank with diverter valve4 ÷ 9 = Not used	1
b03 System water pressure protection selection		0 = Pressure switch1 = Flow switch 1 sec2 = Flow switch 3 sec3 = Flow switch 5 sec4 = Flow switch 10 sec5 = Pressure transducer	0
b04 Fan max. frequency in DHW 0-255 Hz 210 Hz
b05 Fan max. frequency in heating 0-255 Hz 210 Hz
b06 Fan min. frequency in DHW/heating 0-255 Hz 60 Hz
b07 Fan min. Frequency Offset 0-255 Hz 40 Hz
b08 Variable output Relay operation selection		0=Burner lit1=Legionella pump2=Boiler room ventilation3=Motor-operated shutoff valve	0
b09	Post-Ventilation	0-120 seconds	30
b10	Boiler room pre-ventilation	1-15 minutes	1
b11	Boiler room post-ventilation	1-15 minutes	1
b12 Fume sensor		OFF = Deactivated,ON = Enabled	OFF
b13 Not implemented	0 ÷ 90 °C		45
b14	Fumes Max Temperature	0-125°C	110
b15 Fan type selection	--		--
b16 Pump antiblock operation time 0-20 seconds		5
b17 High voltage input		0 = Remote reset1 = Disable all modules2 = Not used3 = Enable heating request	0
b18 Password	0 ÷ 999		418
b19 Module Activation	ON-OFF		ON

Notes

1. Parameters with more than one description vary their function and/or range in relation to the setting of the parameter given in brackets.
2. Parameters with more than one description are reset to the default value if the parameter given in brackets is modified.

Parameters Menu - Transparent Parameters

31 parameters are available, indicated by the letter "P", which are not modifiable from Remote Timer Control.

Table 5- Parameters - Transparent

Parameter Description Range
P01 Ignition power 0-100% 30
P02 Heating ramp 1-10°C/minute 1
P03 Virtual setpoint min. temperature 20 ÷ 80°C 20
P04 Heating standby time 0 ÷ 10 minutes 4
P05 Heating Post-Circulation 0 ÷ 255 minutes 3
P06	Pump operation	0-3 Operation strategy	0
P07	Modulating pump min. speed	0 ÷ 100%	30
P08	Modulating pump start speed	0 ÷ 100%	75
P09	Modulating pump max. speed	30 ÷ 100%	100
P10	Pump deactivation temperature during Post-Circulation	0 ÷ 100°C	35
P11	Pump activation hysteresis temperature during Post-Circulation	0 ÷ 20°C	5
P12	Heating user min. setpoint	10 ÷ 90 °C	20
P13	Heating user max. setpoint	20 ÷ 90 °C	80
P14 Max. output in heating 0-100% 80
P15 DHW ramp 1-10°C/min 5
P16	DHW standby time	0-255 seconds	120
P17	DHW pump Post-Circulation	0-255 seconds	30
P18	With B02 = 7 - Not implemented	--	--
	With B02 = 8 - DHW user min. setpoint	10° ÷ 40°	10°
	With B02 = 9 - DHW user min. setpoint	10° ÷ 40°	10°
P19	With B02 = 7 - Not implemented	--	--
	With B02 = 8 - DHW user max. setpoint	40° ÷ 70°	65°
	With B02 = 9 - DHW user max. setpoint	40° ÷ 70°	65°
P20	Max. output in DHW	0-100%	80%
P21	With B02 = 7 - Not implemented	--	--
	With B02 = 8 - Hot water tank hysteresis	0° ÷ 60°	2°
	With B02 = 9 - Hot water tank hysteresis	0° ÷ 60°	2°
P22	With B02 = 7 - Not implemented	--	--
	With B02 = 8 - Primary setpoint	70° ÷ 85°	80°
	With B02 = 9 - Primary setpoint	70° ÷ 85°	80°
P23	With B02 = 7 - Not implemented	--	--
	With B02 = 8 - Legionella protection	ON - OFF	OFF
	With B02 = 9 - Legionella protection	ON - OFF	OFF
P24	Fan frequency in standby mode	0-255 Hz	0
P25 Modulating pump adjustment temperature 0-60°C		20
P26	Primary exchanger protection temperature	0-80°C	35
P27	System min. pressure value	--	--
P28	System nominal pressure value	--	--
P29 Exchanger protection intervention		0 = No F43,1-15 = 1-15°C/second	0
P30	Heating hysteresis after ignition	6-30°C	10
P31	Timer for heating hysteresis after ignition	0-180 seconds	60

Notes

1. Parameters with more than one description vary their function and/or range in relation to the setting of the parameter given in brackets.
2. Parameters with more than one description are reset to the default value if the parameter given in brackets is modified.
3. The Maximum Heating Power parameter can also be modified in Test Mode.

System Type - Parameters Menu

27 parameters are available, indicated by the letter "P." which are not modifiable from Remote Timer Control.

Parameter	Description Range
P.01	Heating request selection	0 = Normal heating request1 = Request from remote control with external on-off enabling2 = 0-10V signal request with temperature control with external on-off enabling3 = 0-10V signal request with external on-off enabling4 = Control of 2 climatic curves with remote control-room thermostat and second room thermostat5 = Control of 2 climatic curves with remote control-room thermostat and second room thermostat	0
P.02	Cascade sensor selection	0 = Disabled1 = Enabled2 = Enabled	0
P.03	No function 0-1 0
P.04	3-way valve time 0 ÷ 255 seconds 0
P.05	Activation timer* 0 ÷ 255 minutes 1
P.06	Deactivation timer* 0 ÷ 255 minutes 1
P.07	Activation power* 0 ÷ 100% 70
P.08	Deactivation power* 0 ÷ 100% 25
P.09	Hydraulic separator function	OFF = Disabled, ON = Enabled	OFF
P.10	System filling function	OFF = Disabled, ON = Enabled	OFF
P.11	3-way valve selection	2/3 = 2 or 3 wires2 = 2 wires	2/3
P.12	0-10Vdc Heating OFF voltage (Temperature Control)**	0.1-10 Vdc	2.5
P.13	0-10Vdc Heating ON voltage (Temperature Control)**	0.1-10 Vdc	3.0
P.14	0-10Vdc Max. voltage (Temperature Control)**	0.1-10 Vdc	10
P.15	0-10Vdc Min. temperature (Temperature Control)**	0 ÷ 100°C	20
P.16	0-10Vdc Max. temperature (Temperature Control)**	0 ÷ 100°C	90
P.17	0-10Vdc Heating OFF voltage (Power Control)**	0.1-10 Vdc	2.5
P.18	0-10Vdc Heating ON voltage (Power Control)**	0.1-10 Vdc	3.0
P.19	0-10Vdc Max. power (Power Control)**	0.1-10 Vdc	10
P.20	0-10Vdc Min. power (Power Control)**	0-100%	0
P.21	0-10Vdc Max. power (Power Control)**	0-100%	100
P.22	NOT USED --	OFF
P.23	Slave boiler continuous Comfort	OFF = Disabled, ON = Enabled	OFF
P.24	Activation timer *** 0 ÷ 255 minutes 1
P.25	Deactivation timer *** 0 ÷ 255 minutes 5
P.26	Activation power ***	0 ÷ 100 %	70
P.27	Deactivation power ***	0 ÷ 100 %	25

Notes

1. * These parameters regard heating mode.
2. ** These parameters are active only when the system operates with input 0-10Vdc.
3. *** These parameters regard DHW mode.

3.2 Commissioning

Checks to be done at first lighting, and after all maintenance operations that involved disconnection from the systems or work on safety devices or parts of the boiler:

Before lighting the boiler

• Open any on-off valves between the boiler and the systems.
• Check the tightness of the gas system, proceeding with caution and using a soap and water solution to detect any leaks in connections.
• Check correct prefilling of the expansion tank (ref. sec. 4.4).
• Fill the water system and make sure all air contained in the boiler and the system has been vented, by opening the air vent valve on the boiler and any vent valves on the system.
• Fill the condensate trap and check correct connection of the condensate elimination system.
• Make sure there are no water leaks in the system, DHW circuits, connections or boiler.
• Check correct connection of the electrical system and efficiency of the earthing system
• Make sure the gas pressure value for heating is that required.
• Make sure there are no flammable liquids or materials in the immediate vicinity of the boiler

IF THE ABOVE INSTRUCTIONS ARE NOT OBSERVED THERE MAY BE RISK OF SUFFOCATION OR POISONING DUE TO GAS OR FUMES ESCAPING; DANGER OF FIRE OR EXPLOSION. ALSO, THERE MAY BE A RISK OF ELECTRIC SHOCK OR FLOODING THE ROOM.

Checks during operation

• Turn the unit on as described in sec. 1.3.
• Check the tightness of the fuel circuit and water systems.
• Check the efficiency of the flue and air-fume ducts during boiler operation.
• Check the correct tightness and efficiency of the condensate removal system and trap.
• Check correct water circulation between the boiler and systems.
• Make sure the gas valve modulates correctly in heating and hot water production.
• Check proper lighting of the boiler by performing various tests, turning it on and off with the room thermostat or remote control.
• Using a combustion analyzer connected to the fumes outlet of the single module (see fig. 78), check the CO_2 content in the fumes.
  • Make sure the fuel consumption indicated on the meter matches that given in the technical data table in sec. 4.4.
• Check the correct programming of the parameters and carry out any required customization (compensation curve, power, temperatures, etc.).

3.3 Maintenance

IMPORTANT

ALL MAINTENANCE WORK AND REPLACEMENTS MUST BE CARRIED OUT BY SKILLED QUALIFIED PERSONNEL.

Before carrying out any operation inside the boiler, disconnect the power and close the gas cock upstream. Otherwise there may be a danger of explosion, electric shock, suffocation or poisoning.

Periodical inspection

To ensure proper operation of the unit, it is necessary to have an annual inspection carried out by qualified personnel, providing for the following:

• heat exchanger check and cleaning with suitable products if dirty or clogged
• check and possible cleaning of burner (do not use chemical products or wire brushes)
• seal and gasket check (burner, sealed chamber, etc.)
• check and cleaning of sludge remover filters and system filters
• check, cleaning and filling of condensate drain traps
• check of wiring, contacts, electrical actuators
• check and cleaning of generator air inlets and boiler room air intakes
• check and cleaning of fume evacuation duct-manifold-flue system.
• expansion tank check and prefilling

- check and cleaning of electrodes, which must be free of deposits and properly positioned

- check of correct and stable system water pressure, ensuring conformity with the required working pressure.

The use of automatic filling systems for reinstatement of operating conditions must provide for adequate treatment of the water (ref. "System water characteristics" on page 311)

• check of heating system water chemical and physical parameters (ref. "System water characteristics" on page 311)
  • water and gas system tightness check
• check of correct and stable gas supply pressure to plant (20 mbar for operation with natural gas); any fluctuations or pressure drops below the declared value can create malfunctioning and stops with need for manual resetting.
  • burner ignition and control and safety device check (gas valve, flowmeter, thermostats, etc.)
  • circulating pump check, freeing when necessary
• fume analysis and check of combustion parameters

The casing, control panel and aesthetic parts of the boiler can be cleaned with a soft damp cloth, possibly soaked in soapy water. All abrasive detergents and solvents should be avoided.

Opening the casing

To open the boiler casing:

1. Undo the screws A.
2. Slide the cover towards the back so as to hook the pin as shown in the box in fig. 86.

fig. 86- Cover opening

1. Hook the bracket (see fig. 87)

Line drawing of a mechanical device with open lid, flanges, and internal components (no text or symbols)

Technical line drawing of a mechanical assembly with no visible text or symbols

fig. 87

1. Undo the screws, lift and remove the panels.

Technical line drawing of an industrial machine with internal components and mounting brackets (no text or symbols)

fig. 88

Module maintenance

The modular structure of MACH allows maintenance or replacement of parts to be carried out on the individual internal modules independently of each other.

Disconnect the unit from the power supply and close the gas cock (ref. 106 - fig. 89) of the module undergoing maintenance. If necessary, drain the hydraulic circuit by connecting the hose connector pre-installed in the first module, using a suitable rubber hose (not supplied), to a drain or a collection manifold, on the side outlet of the three-way cock (ref. 252 - fig. 89) located on the module return. Close the three-way cock (ref. 252) on the return in order to drain.

Once the maintenance operations have been carried out, proceed in reverse order, returning the three-way return cock (ref. 252) to the "open" position.

IMPORTANT: At the end of the maintenance operations, before turning the unit on again, check that all the module shutoff cocks are in the "open" position.

fig. 89

Mechanical diagram showing two configurations of a valve assembly with tubing and tubing, no text or symbols present.

fig. 90

3.4 Troubleshooting

Diagnostics

The boiler is equipped with an advanced self-diagnosis system. In case of a boiler fault, the display lights up indicating the fault code and the module number.

There are faults that cause permanent shutdowns (indicated with the symbol OK to reset): to restore operation, simply press the OK button for 1 second or via the RESET of the remote timer control (optional) if installed; if the boiler does not restart, the fault must be eliminated first.

Other faults cause temporary shutdowns which are automatically reset as soon as the value returns within the boiler's normal working range.

Table of faults

Table 6- List of faults

Fault code	Fault Possible cause Cure
01 No burner ignition		No gas	Check the regular gas flow to the boiler and that the air has been eliminated from the pipes
		Ignition/detection electrode fault	Check the wiring of the electrode and that it is correctly positioned and free of any deposits
		Faulty gas valve Check the gas valve and replace it if necessary
		Insufficient gas supply pressure Check the gas supply pressure
		Trap blocked Check the trap and clean it if necessary
		Card fault Check the card
02	Flame present signal with burner off	Electrode fault Check the ionization electrode wiring
		Card fault Check the card
03	Overtemperature protection intervention	Heating sensor damaged	Check the correct positioning and operation of the heating sensor
		No water circulation in the system Check the circulating pump
		Air in the system Vent the system
05	Fan protection intervention	Fault F15 generated for 1 hour (consecutive)	See fault F15
06	No flame after ignition phase (6 times in 4 minutes)	Ionization electrode fault Check the position of the ionization electrode and replace it if necessary
		Flame unstable Check the burner
		Gas valve Offset fault Check the Offset adjustment at minimum power
		air/fume ducts obstructed	Remove the obstruction from the flue, fume extraction ducts, air inlet and terminals
		Trap blocked Check the trap and clean it if necessary
07 High fume temperature		Exchanger dirty	Clean the exchanger
		Exchanger deteriorated	Check the integrity of exchanger
		Sensor does not indicate the correct temperature	Check the fume sensor or replace it
08	Heating sensor 1 (flow) overtemperature indication(Viewable only in History Menu)	insufficient system water circulation	check water circulation
09	Return sensor overtemperature indication(Viewable only in History Menu)	insufficient system water circulation	check water circulation
10 Flow sensor 1 fault		Sensor damaged	Check the wiring or replace the sensor
		Wiring shorted
		Wiring disconnected

Fault code	Fault	Possible cause	Cure
11 Return sensor fault		Sensor damaged	Check the wiring or replace the sensorWiring shorted
		Wiring disconnected
12 DHW sensor fault		Sensor damaged	Check the wiring or replace the sensorWiring shorted
		Wiring disconnected
13 Card parameter fault Wrong card parameter setting			Check the card parameter and modify it if necessary.
14 Flow sensor 2 fault		Sensor damaged	Check the wiring or replace the sensorWiring shorted
		Wiring disconnected
15 Fan fault		No 230V power supply Check the 3-pin connector wiring
		Tachometric signal interrupted Check the 5-pin connector wiring
		Fan damaged Check the fan
26	RESET button on controller on gas valve, fault.	RESET button on controller fitted on gas valve blocked or faulty.	Check the RESET button and replace the controller on the gas valve if necessary.
34	Supply voltage under 170V	Electric mains trouble Check the electrical system
35	Faulty mains frequency	Electric mains trouble	Check the electrical system
37	Pressure switch contact open	Low system pressure Check the system water pressure
39 External probe fault		Probe damaged or wiring shorted Check the wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire cable wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire wire 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inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter Inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter interInter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter interinter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter ter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter inter Intermeter	Check the correct positioning and operation of the heating sensor	Replace the sensor
42	Heating sensor fault	Sensor damaged	Replace the sensor
50	Cascade temperature sensor fault	Sensor damaged	Check the wiring or replace the sensorWiring shorted
		Wiring disconnected
52	Heating sensor fault	Sensor damaged	Replace the sensor
61 Controller fault Controller internal error			Check the ground connection and replace the controller if necessary.
62	No communication between controller and gas valve	Controller not connected	Connect the controller to the gas valve
		Valve damaged	Replace the valve
63646566	Controller fault	Controller internal error	Check the ground connection and replace the controller if necessary.
99	No communication between controller and dis-play	Wiring disconnected	Check the wiring of the 6 wires between controller and display

4. Technical data and characteristics

Legend of figures cap. 4 "Technical data and characteristics"

a4 Fumes outlet - ∅ 200

R1 620 Ohm 1/4W

R (Module 2) 1k3 Ohm 1/4W

R (Module 3) 2k2 Ohm 1/4W

R (Module 4) 3k3 Ohm 1/4W

R (Module 5) 4k3 Ohm 1/4W

R (Module 6) 5k6 Ohm 1/4W

R (Module 7) 7k5 Ohm 1/4W

R (Module 8) 9k1 Ohm 1/4W

RT 120 Ohm 1/4W

F Fuse

7 Gas inlet - DN 40 flanged

10 System flow - DN 65 flanged

11 System return - DN 65 flanged

16 Fan

32 Heating circulating pump

36 Automatic air vent

44 Gas valve

72 Room thermostat (not supplied)

72b Second room thermostat (not supplied)

81 Ignition electrode

95 3-way valve - 2 wires (not supplied)

A = Heating phase

B = Neutral

98 Switch

106 Gas cock

114 Water pressure switch

130 DHW circulating pump (not supplied)

138 External probe (not supplied)

139 Remote timer control (not supplied)

155 Hot water tank temperature probe (not supplied)

179 Non-return valve

186 Return sensor

188 Ignition/Ionization electrode

191 Fumes temperature sensor.

193 Trap

252 3-way drain and shutoff cock

256 Modulating heating circulating pump signal

278 Double sensor (Safety + Heating)

298 Cascade temperature sensor (not supplied)

299 Input 0-10 Vdc

300 Burner lit contact (voltage-free contact)

301 Fault contact (voltage-free contact)

302 Remote reset input (230 Volt)

306 Heating system circulating pump (not supplied)

307 Heating system second circulating pump (not supplied)

348 3-way valve - 3 wires (not supplied)

A = Heating phase

B = Neutral

C = DHW phase

357 Faulty contact (230 Vac)

374 Aluminum exchanger

375 Silencer

4.1 Dimensions and connections

Front view for models MACH 150 - MACH 225 - MACH 300 - MACH 370 - MACH 450

fig. 91- Front view

Model	A mm
MACH 150
MACH 225	1047
MACH 300
MACH 370	1487
MACH 450

Front view for models MACH 520 - MACH 600

fig. 92
Side view

fig. 93- Side view

4.2 Main components

fig. 94- Main components

4.3 Hydraulic circuit

graph TD
    A["Top Tank"] --> B["114 Valve"]
    B --> C["Valve 10"]
    B --> D["Valve 36"]
    B --> E["Valve 179"]
    B --> F["Valve 374"]
    B --> G["Valve 252 Valve"]
    B --> H["Valve 32 Valve"]
    B --> I["Valve 11 Valve"]
    B --> J["Valve 10 Valve"]
    style A fill:#f9f,stroke:#333
    style B fill:#ccf,stroke:#333
    style C fill:#cfc,stroke:#333
    style D fill:#cfc,stroke:#333
    style E fill:#cfc,stroke:#333
    style F fill:#cfc,stroke:#333
    style G fill:#fcc,stroke:#333
    style H fill:#fcc,stroke:#333
    style I fill:#fcc,stroke:#333
    style J fill:#fcc,stroke:#333

fig. 95- Hydraulic circuit

4.4 Technical data table

The column on the right gives the abbreviation used on the data plate.

0MCMFAWA	MACH 150
0MCMJAWA	MACH 225
0MCMLAWA	MACH 300

DESTINATION COUNTRIES	IT ES RO PL NL HU
GAS CATEGORY	II2HM3P (IT) II2H3P (ES) II2H3P (RO) II2E3P (PL) II2EK3P (NL) I2Hs (HU)

PRODUCT IDENTIFICATION CODES		0MCMFAWA	0MCMJAWA	0MCMLAWA
Max. heating capacity	kW	142	213	284	Qn
Min. heating capacity	kW	14	14	14	Qn
Max. heat output in heating (80/60°C)	kW	139,2	208,8	278,4	Pn
Min. heat output in heating (80/60°C)	kW	13,7	13,7	13,7	Pn
Max. heat output in heating (50/30°C)	kW	148,4	222,6	296,8	Pn
Min. heat output in heating (50/30°C)	kW	15,1	15,1	15,1	Pn
Efficiency Pmax (80-60°C)	%	98	98	98
Efficiency Pmin (80-60°C)	%	97,7	97,7	97,7
Efficiency Pmax (50-30°C)	%	104,5	104,5	104,5
Efficiency Pmin (50-30°C)	%	108,2	108,2	108,2
Efficiency 30%	%	108,8	108,8	108,8
Flue loss with burner ON (80/60) - Pmax / Pmin	%	1,6 / 1,3	1,6 / 1,3	1,6 / 1,3
Shell loss with burner ON (80/60) - Pmax / Pmin	%	0,36 / 1	0,36 / 1	0,36 / 1
Flue loss with burner ON (50/30) - Pmax / Pmin	%	1,2 / 0,6	1,2 / 0,6	1,2 / 0,6
Shell loss with burner ON (50/30) Pmax / Pmin	%	0,14 / 0,4	0,14 / 0,4	0,14 / 0,4
Flue loss with burner OFF (50K / 20K)	%	0 / 0	0 / 0	0 / 0
Shell loss with burner OFF (50K / 20K)	%	0 / 0	0 / 0	0 / 0
Flue gas temperature (80/60 °C) - Pmax / Pmin	%	62 / 60	62 / 60	62 / 60
Flue gas temperature (50/30 °C) - Pmax / Pmin	%	48 / 31	48 / 31	48 / 31
Flue gas flow rate - Pmax / Pmin	%	65,7 / 6,9	98,6 / 6,9	131,5 / 6,9
Gas supply pressure G20	mbar	20	20	20
Gas nozzle G20	m3/h	8,5	8,5	8,5
Gas flow rate G20 - Max / min	m3/h	15,03 / 1,48	22,54 / 1,48	30,05 / 1,48
CO2 - G20	%	9,1±0,3	9,1±0,3	9,1±0,3
Gas supply pressure G31	mbar	37	37	37
Gas nozzle G31	kg/h	6.4 - 6.0	6.4 - 6.0	6.4 - 6.0
Gas flow rate G31 - Max / min	kg/h	11,03 / 1,09	16,55 / 1,09	22,07 / 1,09
CO2 - G31	%	10,5±0,4	10,5±0,4	10,5±0,4
NOx emissions class	-	6 (<56 mg/kwh)			NOx
Max. working pressure in heating	bar	6	6	6	PMS
Min. working pressure in heating	bar	0,8	0,8	0,8
Heating max. adjustment temperature	°C	95	95	95	tmax
Heating water content	liters	24	35	46
Heating expansion vessel capacity	liters	--	--	--
Heating expansion vessel precharge pressure	bar	--	--	--
Protection rating	IP	IPX4D	IPX4D	IPX4D
Power supply voltage	V/Hz	230V~50HZ
Electrical power input	W	380	570	760	W
Empty weight	kg	215	255	290
Type of unit B23

0MCMMAWA MACH 370

OMCMNAWA MACH 450

DESTINATION COUNTRIES IT ES RO PL NL HU
GAS CATEGORY II2HM3P (IT) II2H3P (ES) II2H3P (RO) II2E3P (PL) II2EK3P (NL) I2Hs (HU)
PRODUCT IDENTIFICATION CODES		0MCMMAWA	0MCMNAWA
Max. heating capacity	kW	355	426	Qn
Min. heating capacity	kW	14	14	Qn
Max. heat output in heating (80/60°C)	kW	348,1	417,7	Pn
Min. heat output in heating (80/60°C)	kW	13,7	13,7	Pn
Max. heat output in heating (50/30°C)	kW	371	445,2	Pn
Min. heat output in heating (50/30°C)	kW	15,1	15,1	Pn
Efficiency Pmax (80-60°C)	%	98	98
Efficiency Pmin (80-60°C)	%	97,7	97,7
Efficiency Pmax (50-30°C)	%	104,5	104,5
Efficiency Pmin (50-30°C)	%	108,2	108,2
Efficiency 30%	%	108,8	108,8
Flue loss with burner ON (80/60) - Pmax / Pmin	%	1,6 / 1,3	1,6 / 1,3
Shell loss with burner ON (80/60) - Pmax / Pmin	%	0,36 / 1	0,36 / 1
Flue loss with burner ON (50/30) - Pmax / Pmin	%	1,2 / 0,6	1,2 / 0,6
Shell loss with burner ON (50/30) Pmax / Pmin	%	0,14 / 0,4	0,14 / 0,4
Flue loss with burner OFF (50K / 20K)	%	0 / 0	0 / 0
Shell loss with burner OFF (50K / 20K)	%	0 / 0	0 / 0
Flue gas temperature (80/60 °C) - Pmax / Pmin	%	62 / 60	62 / 60
Flue gas temperature (50/30 °C) - Pmax / Pmin	%	48 / 31	48 / 31
Flue gas flow rate - Pmax / Pmin	%	164,3 / 6,9	197,2 / 6,9
Gas supply pressure G20	mbar	20	20
Gas nozzle G20	m3/h	8,5	8,5
Gas flow rate G20 - Max / min	m3/h	37,57 / 1,48	45,08 / 1,48
CO2 - G20	%	9,1±0,3	9,1±0,3
Gas supply pressure G31	mbar	37	37
Gas nozzle G31	kg/h	6.4 - 6.0	6.4 - 6.0
Gas flow rate G31 - Max / min	kg/h	27,58 / 1,09	33,1 / 1,09
CO2 - G31	%	10,5±0,4	10,5±0,4
NOx emissions class	-	6 (<56 mg/kwh)		NOx
Max. working pressure in heating	bar	6	6	PMS
Min. working pressure in heating	bar	0,8	0,8
Heating max. adjustment temperature	°C	95	95	tmax
Heating water content	liters	57	68
Heating expansion vessel capacity	liters	--	--
Heating expansion vessel precharge pressure	bar	--	--
Protection rating	IP	IPX4D	IPX4D
Power supply voltage	V/Hz	230V~50HZ
Electrical power input	W	950	1140	W
Empty weight	kg	355	395
Type of unit B23

0MCMPAWA MACH 520

OMCMQAWA MACH 600

DESTINATION COUNTRIES

GAS CATEGORY

IT ES RO PL NL HU

II2HM3P (IT) II2H3P (ES) II2H3P (RO) II2E3P (PL) II2EK3P (NL) I2Hs (HU)

PRODUCT IDENTIFICATION CODES		0MCMPAWA	0MCMQAWA
Max. heating capacity	kW	497	568	Qn
Min. heating capacity	kW	14	14	Qn
Max. heat output in heating (80/60°C)	kW	487,3	556,9	Pn
Min. heat output in heating (80/60°C)	kW	13,7	13,7	Pn
Max. heat output in heating (50/30°C)	kW	519,4	593,6	Pn
Min. heat output in heating (50/30°C)	kW	15,1	15,1	Pn
Efficiency Pmax (80-60°C)	%	98	98
Efficiency Pmin (80-60°C)	%	97,7	97,7
Efficiency Pmax (50-30°C)	%	104,5	104,5
Efficiency Pmin (50-30°C)	%	108,2	108,2
Efficiency 30%	%	108,8	108,8
Flue loss with burner ON (80/60) - Pmax / Pmin	%	1,6 / 1,3	1,6 / 1,3
Shell loss with burner ON (80/60) - Pmax / Pmin	%	0,36 / 1	0,36 / 1
Flue loss with burner ON (50/30) - Pmax / Pmin	%	1,2 / 0,6	1,2 / 0,6
Shell loss with burner ON (50/30) Pmax / Pmin	%	0,14 / 0,4	0,14 / 0,4
Flue loss with burner OFF (50K / 20K)	%	0 / 0	0 / 0
Shell loss with burner OFF (50K / 20K)	%	0 / 0	0 / 0
Flue gas temperature (80/60 °C) - Pmax / Pmin	%	62 / 60	62 / 60
Flue gas temperature (50/30 °C) - Pmax / Pmin	%	48 / 31	48 / 31
Flue gas flow rate - Pmax / Pmin	%	230,1 / 6,9	262,9 / 6,9
Gas supply pressure G20	mbar	20	20
Gas nozzle G20	m3/h	8,5	8,5
Gas flow rate G20 - Max / min	m3/h	52,59 / 1,48	60,11 / 1,48
CO2 - G20	%	9,1±0,3	9,1±0,3
Gas supply pressure G31	mbar	37	37
Gas nozzle G31	kg/h	6.4 - 6.0	6.4 - 6.0
Gas flow rate G31 - Max / min	kg/h	38,62 / 1,09	44,13 / 1,09
CO2 - G31	%	10,5±0,4	10,5±0,4
NOx emissions class	-	6 (<56 mg/kwh)		NOx
Max. working pressure in heating	bar	6	6	PMS
Min. working pressure in heating	bar	0,8	0,8
Heating max. adjustment temperature	°C	95	95	tmax
Heating water content	liters	79	90
Heating expansion vessel capacity	liters	--	--
Heating expansion vessel precharge pressure	bar	--	--
Protection rating	IP	IPX4D	IPX4D
Power supply voltage	V/Hz	230V~50HZ
Electrical power input	W	1330	1520	W
Empty weight	kg	465	500
Type of unit			B23

4.5 ErP tables

ErP product fiche

MODEL: MACH 150 - (OMCMFAWA)

Trademark: FERROLI
Condensing boiler: YES
Low-temperature boiler (**): YES
B1 Boiler: NO
Combination heater: NO
Cogeneration space heater: NO
Item	Symbol	Unit Value
Rated heat output	Pn	kW	139
Seasonal space heating energy efficiency	_s	%	93
Useful heat out put
Useful heat output at rated heat output and high-temperature regime (*)	P4	kW	139,2
Useful heat output at 30% of rated heat output and low-temperature regime (**)	P1	kW	23,0
Useful efficiency
Useful efficiency at rated heat output and high-temperature regime (*)	_4	%	88,3
Useful efficiency at 30% of rated heat output and low-temperature regime (**)	_1	%	98,0
Auxiliary electricity consumption
At full load	elmax	kW	0,230
At part load	elmin	kW	0,025
In standby mode	PSB	kW	0,005
Other items
Standby heat loss	Pstby	kW	0,240
Ignition burner power consumption	Pign	kW	0,000
Annual energy consumption	QHE	GJ	236
Sound power level	LWA	dB	69
Emissions of nitrogen oxides	NOx	mg/kWh	42

(*1 High-temperature regime means 60°C return temperature at heater inlet and 80°C feed temperature at heater outlet.
(**) Low temperature means for condensing boilers 30°C, for low-temperature boilers 37°C and for other heaters 50°C return temperature (at heater inlet).

ErP product fiche

MODEL: MACH 225 - (0MCMJAWA)

Trademark: FERROLI
Condensing boiler: YES
Low-temperature boiler (**): YES
B1 Boiler: NO
Combination heater: NO
Cogeneration space heater: NO
Item	Symbol	Unit Value
Rated heat output	Pn	kW	209
Seasonal space heating energy efficiency	_s	%	93
Useful heat out put
Useful heat output at rated heat output and high-temperature regime (*)	P4	kW	208,8
Useful heat output at 30% of rated heat output and low-temperature regime (**)	P1	kW	23,0
Useful efficiency
Useful efficiency at rated heat output and high-temperature regime (*)	_4	%	88,3
Useful efficiency at 30% of rated heat output and low-temperature regime (**)	_1	%	98,0
Auxiliary electricity consumption
At full load	elmax	kW	0,345
At part load	elmin	kW	0,025
In standby mode	PSB	kW	0,006
Other items
Standby heat loss	Pstby	kW	0,360
Ignition burner power consumption	Pign	kW	0,000
Annual energy consumption	QHE	GJ	344
Sound power level	LWA	dB	71
Emissions of nitrogen oxides	NOx	mg/kWh	42

(*) High-temperature regime means 60°C return temperature at heater inlet and 80°C feed temperature at heater outlet.
(21) Low temperature means for condensing boilers 30°C, for low-temperature boilers 37°C and for other heaters 50°C return temperature (at heater inlet).

ErP product fiche

MODEL: MACH 300 - (OMCMLAWA)

Trademark: FERROLI
Condensing boiler: YES
Low-temperature boiler (**): YES
B1 Boiler: NO
Combination heater: NO
Cogeneration space heater: NO
Item	Symbol	Unit Value
Rated heat output	Pn	kW	278
Seasonal space heating energy efficiency	_s	%	93
Useful heat out put
Useful heat output at rated heat output and high-temperature regime (*)	P4	kW	278,4
Useful heat output at 30% of rated heat output and low-temperature regime (**)	P1	kW	23,0
Useful efficiency
Useful efficiency at rated heat output and high-temperature regime (*)	_4	%	88,3
Useful efficiency at 30% of rated heat output and low-temperature regime (**)	_1	%	98,0
Auxiliary electricity consumption
At full load	elmax	kW	0,460
At part load	elmin	kW	0,025
In standby mode	PSB	kW	0,007
Other items
Standby heat loss	Pstby	kW	0,480
Ignition burner power consumption	Pign	kW	0,000
Annual energy consumption	QHE	GJ	452
Sound power level	LWA	dB	72
Emissions of nitrogen oxides	NOx	mg/kWh	42

(*) High-temperature regime means 60°C return temperature at heater inlet and 80°C feed temperature at heater outlet.
(21) Low temperature means for condensing boilers 30°C, for low-temperature boilers 37°C and for other heaters 50°C return temperature (at heater inlet).

ErP product fiche

MODEL: MACH 370 - (0MCMMAWA)

Trademark: FERROLI
Condensing boiler: YES
Low-temperature boiler (**): YES
B1 Boiler: NO
Combination heater: NO
Cogeneration space heater: NO
Item	Symbol	Unit	Value
Rated heat output	Pn	kW	348
Seasonal space heating energy efficiency	_s	%	93
Useful heat out put
Useful heat output at rated heat output and high-temperature regime (*)	P4	kW	348,1
Useful heat output at 30% of rated heat output and low-temperature regime (**)	P1	kW	23,0
Useful efficiency
Useful efficiency at rated heat output and high-temperature regime (*)	_4	%	88,3
Useful efficiency at 30% of rated heat output and low-temperature regime (**)	_1	%	98,0
Auxiliary electricity consumption
At full load	elmax	kW	0,575
At part load	elmin	kW	0,025
In standby mode	PSB	kW	0,008
Other items
Standby heat loss	Pstby	kW	0,600
Ignition burner power consumption	Pign	kW	0,000
Annual energy consumption	QHE	GJ	559
Sound power level	LWA	dB	74
Emissions of nitrogen oxides	NOx	mg/kWh	42

(*) High-temperature regime means 60°C return temperature at heater inlet and 80°C feed temperature at heater outlet.
(21) Low temperature means for condensing boilers 30°C, for low-temperature boilers 37°C and for other heaters 50°C return temperature (at heater inlet).

ErP product fiche

MODEL: MACH 450 - (0MCMNAWA)

Trademark: FERROLI
Condensing boiler: YES
Low-temperature boiler (**): YES
B1 Boiler: NO
Combination heater: NO
Cogeneration space heater: NO
Item	Symbol	Unit Value
Rated heat output	Pn	kW	418
Seasonal space heating energy efficiency	_s	%	93
Useful heat out put
Useful heat output at rated heat output and high-temperature regime (*)	P4	kW	417,7
Useful heat output at 30% of rated heat output and low-temperature regime (**)	P1	kW	23,0
Useful efficiency
Useful efficiency at rated heat output and high-temperature regime (*)	_4	%	88,3
Useful efficiency at 30% of rated heat output and low-temperature regime (**)	_1	%	98,0
Auxiliary electricity consumption
At full load	elmax	kW	0,690
At part load	elmin	kW	0,025
In standby mode	PSB	kW	0,009
Other items
Standby heat loss	Pstby	kW	0,720
Ignition burner power consumption	Pign	kW	0,000
Annual energy consumption	QHE	GJ	667
Sound power level	LWA	dB	75
Emissions of nitrogen oxides	NOx	mg/kWh	42

(*) High-temperature regime means 60°C return temperature at heater inlet and 80°C feed temperature at heater outlet.
(21) Low temperature means for condensing boilers 30°C, for low-temperature boilers 37°C and for other heaters 50°C return temperature (at heater inlet).

ErP product fiche

MODEL: MACH 520 - (0MCMPAWA)

Trademark: FERROLI
Condensing boiler: YES
Low-temperature boiler (**): YES
B1 Boiler: NO
Combination heater: NO
Cogeneration space heater: NO
Item	Symbol	Unit Value
Rated heat output	Pn	kW	487
Seasonal space heating energy efficiency	_s	%	93
Useful heat out put
Useful heat output at rated heat output and high-temperature regime (*)	P4	kW	487,3
Useful heat output at 30% of rated heat output and low-temperature regime (**)	P1	kW	23,0
Useful efficiency
Useful efficiency at rated heat output and high-temperature regime (*)	_4	%	88,3
Useful efficiency at 30% of rated heat output and low-temperature regime (**)	_1	%	98,0
Auxiliary electricity consumption
At full load	elmax	kW	0,805
At part load	elmin	kW	0,025
In standby mode	PSB	kW	0,010
Other items
Standby heat loss	Pstby	kW	0,840
Ignition burner power consumption	Pign	kW	0,000
Annual energy consumption	QHE	GJ	774
Sound power level	LWA	dB	77
Emissions of nitrogen oxides	NOx	mg/kWh	42

(*) High-temperature regime means 60°C return temperature at heater inlet and 80°C feed temperature at heater outlet.
(21) Low temperature means for condensing boilers 30°C, for low-temperature boilers 37°C and for other heaters 50°C return temperature (at heater inlet).

ErP product fiche

MODEL: MACH 600 - (0MCMQAWA)

Trademark: FERROLI
Condensing boiler: YES
Low-temperature boiler (**): YES
B1 Boiler: NO
Combination heater: NO
Cogeneration space heater: NO
Item	Symbol	Unit Value
Rated heat output	Pn	kW	557
Seasonal space heating energy efficiency	_s	%	93
Useful heat out put
Useful heat output at rated heat output and high-temperature regime (*)	P4	kW	556,9
Useful heat output at 30% of rated heat output and low-temperature regime (**)	P1	kW	23,0
Useful efficiency
Useful efficiency at rated heat output and high-temperature regime (*)	_4	%	88,3
Useful efficiency at 30% of rated heat output and low-temperature regime (**)	_1	%	98,0
Auxiliary electricity consumption
At full load	elmax	kW	0,920
At part load	elmin	kW	0,025
In standby mode	PSB	kW	0,011
Other items
Standby heat loss	Pstby	kW	0,960
Ignition burner power consumption	Pign	kW	0,000
Annual energy consumption	QHE	GJ	882
Sound power level	LWA	dB	78
Emissions of nitrogen oxides	NOx	mg/kWh	42

(*) High-temperature regime means 60°C return temperature at heater inlet and 80°C feed temperature at heater outlet.
(21) Low temperature means for condensing boilers 30°C, for low-temperature boilers 37°C and for other heaters 50°C return temperature (at heater inlet).

4.6 Wiring diagrams

ATTENTION: Remove the jumper on the terminal block before connecting the room thermostat or the remote timer control.

ATTENTION: To connect the 3-way valve (terminals 13 - 14 - 15), refer to the diagrams of fig. 96 and fig. 97.

fig. 96- Connection of the 3-way valve with 2 wires

fig. 97- Connection of the 3-way valve with 3 wires

ATTENTION: In case of instability in the reading of the 0-10V signal by the electronic controller, it is advisable to connect the signal reference to ground, and insert a 10K resistor in parallel, as per fig. 98.

fig. 98-

Display wiring diagram

fig. 99- Display wiring diagram

First module wiring diagram

fig. 100- First module wiring diagram

Intermediate module wiring diagram

graph TD
    subgraph_Component_1["ABM07K S4965V3002B"]
        A["Pin 14-18"] --> B["Pin 13-14"]
        B --> C["Pin 12-13"]
        C --> D["Pin 11-12"]
        D --> E["Pin 9-11"]
        E --> F["Pin 8-9"]
        F --> G["Pin 7-8"]
        G --> H["Pin 6-7"]
        H --> I["Pin 5-6"]
        I --> J["Pin 4-5"]
        J --> K["Pin 3-4"]
        K --> L["Pin 2-3"]
        L --> M["Pin 1-2"]
        M --> N["Pin 0-1"]
        N --> O["Pin 0-2"]
        O --> P["Pin 0-3"]
        P --> Q["Pin 0-4"]
        Q --> R["Pin 0-5"]
        R --> S["Pin 0-6"]
        S --> T["Pin 0-7"]
        T --> U["Pin 0-8"]
        U --> V["Pin 0-9"]
        V --> W["Pin 0-10"]
        W --> X["Pin 0-11"]
        X --> Y["Pin 0-12"]
        Y --> Z["Pin 0-13"]
        Z --> AA["Pin 0-14"]
        AA --> AB["Pin 0-15"]
        AB --> AC["Pin 0-16"]
        AC --> AD["Pin 0-17"]
        AD --> AE["Pin 0-18"]
        AE --> AF["Pin 0-19"]
        AF --> AG["Pin 0-20"]
        AG --> AH["Pin 0-21"]
        AH --> AI["Pin 0-22"]
        AI --> AJ["Pin 0-23"]
        AJ --> AK["Pin 0-24"]
        AK --> AL["Pin 0-25"]
        AL --> AM["Pin 0-26"]
        AM --> AN["Pin 0-27"]
        AN --> AO["Pin 0-28"]
        AO --> AP["Pin 0-29"]
        AP --> AQ["Pin 0-30"]
        AQ --> AR["Pin 0-31"]
        AR --> AS["Pin 0-32"]
        AS --> AT["Pin 0-33"]
        AT --> AU["Pin 0-34"]
        AU --> AV["Pin 0-35"]
        AV --> AW["Pin 0-36"]
        AW --> AX["Pin 0-37"]
        AX --> AY["Pin 0-38"]
        AY --> AZ["Pin 0-39"]
        AZ --> BA["Pin 0-40"]
        BA --> BB["Pin 0-41"]
        BB --> BC["Pin 0-42"]
        BC --> BD["Pin 0-43"]
        BD --> BE["Pin 0-44"]
        BE --> BF["Pin 0-45"]
        BF --> BG["Pin 0-46"]
        BG --> BH["Pin 0-47"]
        BH --> BI["Pin 0-48"]
        BI --> BJ["Pin 0-49"]
        BJ --> BK["Pin 0-50"]
        BK --> BL["Pin 0-51"]
        BL --> BM["Pin 0-52"]
        BM --> BN["Pin 0-53"]
        BN --> BO["Pin 0-54"]
        BO --> BP["Pin 0-55"]
        BP --> BQ["Pin 0-56"]
        BQ --> BR["Pin 0-57"]
        BR --> BS["Pin 0-58"]
        BS --> BT["Pin 0-59"]
        BT --> BU["Pin 0-60"]
        BU --> BV["Pin 0-61"]
        BV --> BW["Pin 0-62"]
        BW --> BX["Pin 0-63"]
        BX --> BY["Pin 0-64"]
        BY --> BZ["Pin 0-65"]
        BZ --> CA["Pin 0-66"]
        CA --> CB["Pin 0-67"]
        CB --> CC["Pin 0-68"]
        CC --> CD["Pin 0-69"]
        CD --> CE["Pin 0-70"]
        CE --> CF["Pin 0-71"]
        CF --> CG["Pin 0-72"]
        CG --> CH["Pin 0-73"]
        CH --> CI["Pin 0-74"]
        CI --> CJ["Pin 0-75"]
        CJ --> CK["Pin 0-76"]
        CK --> CL["Pin 0-77"]
        CL --> CM["Pin 0-78"]
        CM --> CN["Pin 0-79"]
        CN --> CO["Pin 0-80"]
        CO --> CP["Pin 0-81"]
        CP --> CQ["Pin 0-82"]
        CQ --> CR["Pin 0-83"]
        CR --> CS["Pin 0-84"]
        CS --> CT["Pin 0-85"]
        CT --> CU["Pin 0-86"]
        CU --> CV["Pin 0-87"]
        CV --> CW["Pin 0-88"]
        CW --> CX["Pin 0-89"]
        CX --> CY["Pin 0-90"]
    end
    subgraph Component_2
        X1["X1"] & X2["X2"] & X3["X3"] & X4["X4"] & X5["X5"] & X6["X6"] & X7["X7"] & X8["X8"] & X9["X9"] & X10["X10"] & X11["X11"] & X12["X12"] & X13["X13"] & X14["X14"] & X15["X15"] & X16["X16"] & X17["X17"] & X18["X18"] & X19["X19"] & X20["X20"] & X21["X21"] & X22["X22"] & X23["X23"] & X24["X24"] & X25["X25"] & X26["X26"] & X27["X27"] & X28["X28"] & X29["X29"] & X30["X30"] & X31["X31"] & X32["X32"] & X33["X33"] & X34["X34"] & X35["X35"] & X36["X36"] & X37["X37"] & X38["X38"] & X39["X39"] & X40["X40"] & X41["X41"] & X42["X42"] & X43["X43"] & X44["X44"] & X45["X45"] & X46["X46"] & X47["X47"] & X48["X48"] & X49["X49"] & X50["X50"] & X51["X51"] & X52["X52"] & X53["X53"] & X54["X54"] & X55["X55"] & X56["X56"] & X57["X57"] & X58["X58"] & X59["X59"] & X60["X60"] & X61["X61"] & X62["X62"] & X63["X63"] & X64["X64"] & X65["X65"] & X66["X66"] & X67["X67"] & X68["X68"] & X69["X69"] & X70["X70"] & X71["X71"] & X72["X72"] & X73["X73"] & X74["X74"] & X75["X75"] & X76["X76"] & X77["X77"] & X78["X78"] & X79["X79"] & X80["X80"] & X81["X81"] & X82["X82"] & X83["X83"] & X84["X84"] & X85["X85"] & X86["X86"] & X87["X87"] & X88["X88"] & X89["X89"] & X90["X90"] & X91["X91"] & X92["X92"] & X93["X93"] & X94["X94"] & X95["X95"] & X96["X96"] & X97["X97"] & X98["X98"] & X99["X99"] & X100["X100"]

fig. 101- Intermediate module wiring diagram

Last module wiring diagram

fig. 102- Last module wiring diagram

Module connection cables wiring diagram

graph TD
    A["Component A"] -->|1 2 3 4 5 6 7 8| B["Component B"]
    B -->|1 2 3 4 5 6 7 8| C["Component C"]
    C -->|1 2 3 4 5 6 7 8| D["Component D"]
    D -->|1 2 3 4 5 6 7 8| E["External Circuit"]
    style A fill:#f9f,stroke:#333
    style B fill:#bbf,stroke:#333
    style C fill:#bfb,stroke:#333
    style D fill:#ffb,stroke:#333
    style E fill:#ffb,stroke:#333

fig. 103- Module connection cable wiring diagram

Legend

A - First module
B - Intermediate module
C - Display
D - Last module

FERROLI S.p.A.

Via Ritonda 78/a

37047 San Bonifacio - Verona - ITALY

www.ferroli.com