Optimax HE 31 C - Central heating boiler FERROLI - Free user manual and instructions

Product Type	Central heating boiler
Brand	Ferroli
Model	Optimax HE 31 C
Fuel	Natural gas (convertible to LPG)
Energy Efficiency Class	A
Heat Output (kW)	31
Dimensions (H x W x D) mm	700 x 400 x 300
Weight (kg)	35
Electrical Supply	230 V / 50 Hz
Power Consumption (W)	150
Water Pressure Range (bar)	1 - 2
Flow Temperature Range (°C)	30 - 80
Flue Type	Room sealed
Control	Electronic with weather compensation capability
Safety Devices	Overheat thermostat, frost protection, flame failure, low water pressure cut-off
Maintenance	Annual service recommended by Gas Safe registered engineer
Spare Parts Availability	Through authorized Ferroli dealers
Warranty	2 years (extendable upon registration)
Installation Requirement	Must be installed by a Gas Safe registered engineer

Frequently Asked Questions - Optimax HE 31 C FERROLI

How do I reset the Ferroli Optimax HE 31 C boiler?

Press and hold the reset button for 3 seconds. If the issue persists, check for error codes.

What does error code E01 mean?

Error E01 indicates ignition failure. Check that the gas supply is on and the ignition electrodes are clean.

How often should I service my boiler?

An annual service by a Gas Safe registered engineer is recommended to maintain efficiency and safety.

Can I connect an external thermostat?

Yes, the boiler is compatible with 230V or digital thermostats. Refer to the manual for wiring.

What is the minimum water pressure required?

The minimum water pressure is 1 bar. If below, use the filling loop to repressurize.

How do I top up the water pressure?

Locate the filling loop beneath the boiler, open both valves slowly until pressure reaches 1.5 bar, then close.

Why is my boiler making banging noises?

This is often due to air in the system. Bleed your radiators to remove trapped air.

What warranty does the Optimax HE 31 C have?

The boiler comes with a 2-year warranty, which can be extended to 5 years if registered within 30 days of installation.

Is a 31 kW boiler suitable for a large house?

Yes, the 31 kW output is suitable for homes with up to 15 radiators and high hot water demand.

Where can I find spare parts?

Spare parts are available through authorized Ferroli dealers and online parts suppliers.

USER MANUAL Optimax HE 31 C FERROLI

wall-mounted gas fired,

pre-mix

condensing combination boiler

ISO 9001 : 2000

CERTIFIED COMPANY

Exterior view of a gray rectangular electronic device with a small circular button on the front panel (no text or symbols visible)

CE

INSTRUCTIONS FOR USE INSTALLATION AND MAINTENANCE FOR THE UNITED KINGDOM AND EIRE

IMPORTANT

- Your "benchmark" Installation, Commissioning and Service Record Log Book is enclosed in the last pages of this manual. "This record must be completed and left with the end user".

Ferroli is a member of the Benchmark initiative and fully supports the aims of the programme. Benchmark has been introduced to improve the standards of installation and commissioning of central heating systems in the UK and to encourage the regular servicing of all central heating systems to ensure safety and efficiency. Please see installation and servicing guidelines.

For EIRE (Southern Ireland) it is necessary to complete a "Declaration of Conformity" to indicate compliance to I.S. 813. An example of this is given in the current edition of I.S. 813. In addition it is necessary to complete the "Benchmark" logbook.

- "Ferroli declare that no substances harmful to health are contained in the appliance or used during the appliance manufacture".

This symbol indicates "Caution" and is placed next to all safety information. Strictly follow these instructions in order to avoid danger and damage to persons, or property.

This symbol calls attention to a note or important information, please read thoroughly.

• Read the warnings given in this manual thoroughly. They provide important information for safe installation, use and maintenance
• By law the instruction manual must be left with the end user.
• If the appliance is sold or transferred to another owner or if the owner moves, leaving the appliance behind, always ensure that the manual is kept with the appliance for consultation by the new owner and/or installer.
• Incorrect installation or poor maintenance absolves the manufacturer from all liability for damage to people or property.
• Installation and maintenance must be carried out in conformity with current legislation, according to the manufacturer's instructions and by qualified personnel.
• Before service or maintenance work is, carried out isolate the appliance from the mains electricity supply.

• In the event of malfunction or faulty operation, isolate the appliance. Do not attempt to repair or carry out any other operation on the appliance directly. Contact qualified personnel only.

• Repairs or the replacement of components must be carried out exclusively by qualified personnel using original spare parts only. Failure to respect the above may compromise the safety of the appliance.
  • To guarantee efficient operation, the appliance must be serviced once a year by a corgi registered engineer.

• The appliance may not be used for purposes other than those for which it was explicitly designed. Any other use is considered improper and therefore dangerous.
• Incorrect installation and use or failure to follow the instructions provided by the manufacturer absolve the manufacturer from all liability for damage.
  • After unpacking, check that the contents are complete and undamaged.
• Keep the packaging out of reach of children as it is potentially hazardous.
• To clean external parts, use a damp cloth moistened with soapy water if necessary. Avoid using abrasive cleaning products and solvents.

Declaration of conformity

Manufacturer: FERROLI S.p.A.

Address: Via Ritonda 78/a 37047 San Bonifacio VR Italy declares that this unit complies with the following EU directives:

• Gas Appliance Directive 90/396
• Efficiency Directive 92/42
- Low Voltage Directive 73/23 (amended by 93/68)
• Electromagnetic Compatibility Directive 89/336 (amended by 93/68)

President and Legal Representative

1. OPERATING INSTRUCTIONS ....4

1.1 Introduction ......4
1.2 Control panel 5
1.3 Turning ON and OFF 6
1.4 Adjustments 8
1.5 Maintenance....11
1.6 Faults....11

2. INSTALLATION ....12

2.1 General Instructions....12
2.2 Boiler location....13
2.3 Boiler water connections 14
2.4 Connection to the gas system 16
2.5 Electrical Connections 16
2.6 Flue system....18
2.7 Condensate outlet connection 24

3. SERVICE AND MAINTENANCE ......26

3.1 Adjustments....26
3.2 System start-up....27
3.3 Maintenance....28
3.4 Troubleshooting....30

4. TECHNICAL CHARACTERISTICS AND DATA ....32

4.1 Dimensions and connections ....32
4.2 General view and main components ....33
4.3 Hydraulic diagram....34
4.4 Technical data table....35
4.5 Diagrams 36
4.6 Wiring diagram 37

BENCHMARK 38

1. OPERATING INSTRUCTIONS

1.1 Introduction

Dear Customer,

Thank you for choosing the OPTIMAX HE 31 C, a FERROLI wall-mounted boiler of the latest generation, featuring advanced design and cutting-edge technology.

OPTIMAX HE 31 C is a high-efficiency condensing pre-mix appliance for heating and hot water production with extremely low emissions, running on natural gas or LPG.

The boiler consists of an aluminium laminar heat exchanger providing effective condensation of the water vapour contained in the flue gases, permitting extremely high efficiency.

Above the heat exchanger, in the boiler, there is a pre-mix burner, with a large ceramic surface, equipped with electronic ignition and ionization flame control, which achieves extremely low emissions while ensuring high reliability and long life operation.

The boiler is totally room sealed from the installation room: the air needed for combustion is drawn from outside. The boiler also includes a modulating speed fan, modulating gas valve, pump, expansion vessel, safety valve, flow sensor, temperature sensors, a safety thermostat and a low water pressure switch.

Thanks to the twin microprocessor control and adjustment system with advanced self-diagnosis, unit operation is for the most part automatic. The power for heating is automatically governed by the control system.

The user only has to set the temperature desired inside the home by means of a room thermostat and appliance temperature control. The adjustment and control system will provide optimum operation throughout the year.

The display continuously provides information on the unit's operating status and it is easily possible to obtain additional information on the sensor temperatures, set-points, etc. or configure them. Any operating problems associated with the boiler or system is immediately signalled by the display and, if possible, corrected automatically.

1.2 Control panel

fig. 1

1 = Domestic Hot Water temperature setpoint decreasing push button
2 = Domestic Hot Water temperature setpoint increasing push button
3 = Central Heating water temperature setpoint decreasing push button
4 = Central Heating water temperature setpoint increasing push button
5 = Display LCD
6 = Reset / Summer-Winter / OTC push button
7 = Economy-Comfort / On-Off push button
8 = Domestic Hot Water symbol
9 = Domestic Hot Water mode operation
10 = Summer symbol
11 = Multi-function indication
12 = Economy symbol
13 = Central Heating mode operation
14 = Central Heating symbol
15 = Burner on and actual load indication

Indication during boiler operation

Central Heating mode

The Central Heating heat demand (generated by the OpenTherm Remote Control, the Room Thermostat or the Clock) is indicated by the flashing of the Hot Air symbol over the radiator (part. 13 and 14 – fig. 1). The display indicates the actual Central Heating water temperature (part. 11 – fig. 1).

fig. 2

Domestic Hot Water mode

The Domestic Hot Water heat demand (generated by the DHW flow sensor or due to a Comfort request) is indicated by the flashing of the Hot Water symbol under the tap (part. 8 and 9 – fig. 1). The display indicates the actual Domestic Hot Water temperature (part. 11 – fig. 1).

fig. 3

1.3 Turning ON and OFF

Without main power supply

fig. 4 - Boiler without main power supply

To avoid damage caused by freezing during long shutdowns in winter, it is advisable to drain all water from the system.

Ignition

Ensure the power is on to the appliance.

fig. 5 Ignition

• For the firsts 120 seconds, the display shows FH that identifies the Air purge function.
• During the first 5 seconds, the display shows the software version of the pcb.
• Open the gas cock on the boiler and purge the air from the pipework upstream of the gas valve.
• When the FH disappears, the boiler is ready to function automatically whenever the external controls are calling for heat.

Turning off

Press the (part. 7 - fig. 1) for 5 seconds.

fig. 6 - Turning off

When the boiler is turned off with this key, the p.c.b is still powered, heating operation is disabled and the display is off however the frost protection will still be active.

To totally isolate close the gas cock ahead of the boiler and disconnect electrical power.

To avoid damage caused by freezing during long shutdowns in winter, it is advisable to drain all water from the system.

To turn boiler on again, press (part.7 - fig.1) for 5 seconds.

fig. 7

If there is no heat demand, the display shows the actual water pressure (bar/10).

The boiler is ready to function automatically whenever the external controls are calling for heat.

1.4 Adjustments

Summer/Winter selection

To select Summer, press the reset (Part. 6 – fig. 1) for 1 second when the boiler is in Winter mode.

fig. 8

The display will show the Summer icon (Part 10 – fig. 1): the boiler can still produce domestic hot water whenever there is a demand. The frost protection remains active.

To select Winter mode, press the reset (Part. 6 – fig. 1) for 1 second when the boiler is in Summer mode.

Heating temperature setting

To set the system flow temperature, use the CH push buttons (Part. 3 and 4 – fig. 1). It can be varied from a minimum of 20^ C to a maximum of 90^ C.

Domestic hot water temperature setting

To set the hot water temperature, use the DHW push buttons (Part. 1 and 2 – fig. 1). It can be varied from a minimum of 40°C to a maximum of 55°C.

fig. 10

Room temperature adjustment (using a room thermostat)

Using the room thermostat, set the temperature desired. Controlled by the room thermostat, the boiler lights and heats the system water to the system delivery setpoint temperature. The burner shuts down when the desired temperature in the room is reached.

A room thermostat and programmer are a mandatory requirement (Building regulations Doc 'L' 2002).

Room temperature adjustment (using an optional Remote Control)

Using the remote control, set the temperature desired. The flow temperature will be controlled by the remote control. For settings and other informations, see the relative manual.

Economy/Comfort selection

The unit is equipped with a special internal device that ensures a high hot-water delivery speed and excellent user comfort. When comfort mode is active the water in the boiler is maintained at a pre-determined temperature, which means that hot water is available at the boiler outlet as soon as a tap is opened, ie with no waiting.

The user can turn the device off (ECO mode) by pressing (part.7 - fig.1). In ECO mode the display shows the relevant symbol (part. 12 - fig. 1). To turn on COMFORT mode, press (part.7 - fig.1) again, the ECO symbol will vanish from the display.

Outside temperature compensation

When the (optional) external sensor kit is fitted to the appliance, the system can work in Outside temperature compensation mode. In O.T.C. mode the temperature of the heating system is controlled according to the external climate conditions, this will guarantee a high degree of comfort and energy saving all year round.

By the CH push buttons (Part. 3 and 4 – fig. 1) is possible to set the maximum flow temperature for the installation.

O.T.C. setting

To enter the OTC mode, press (Part. 6 – fig. 1) for 5 seconds.

The display shows CU flashing (fig. 11); to set Curve, use the DHW push buttons (Part. 1 and 2 – fig. 1). It can be varied from 1 to 10, in accordance with the chart (fig. 13). O means no O.T.C. mode. It is recommended a start point of 20 - 30°C and a flow temperature of 85°C is required for the UK (Curve 9 or 10).

By pressing the CH push buttons ⏻ (Part. 3 e 4 – fig. 1), the display shows OF flashing (fig. 12); to set Offset, use the DHW push buttons ⏻ (Part. 1 and 2 – fig. 1). It can be varied from 20 to 40, in accordance with the chart (fig. 14).

fig. 12

To exit the OTC mode, press reset (Part. 6 – fig. 1) for 5 seconds.

fig. 13

fig. 14

1.5 Maintenance

It is strongly recommended to carry out annual maintenance of the boiler and heating system. Please refer to the "maintenance" section in this manual.

The casing, the control panel and the aesthetic parts of the boiler can be cleaned using a soft and damp cloth, do not use abrasives or solvents.

1.6 Faults

In the unlikely event of an operating problem, or component failure, the display flashes and a fault identification code appears.

The boiler is equipped with an advanced self-diagnosis system that signals any faults on the display. Some faults ("A" indication) cause a boiler shutdown. In this case, operation must be reset manually by pressing the reset (Part. 6 – fig. 1) for 1 second.

Other faults ("F" indication) cause temporary shutdowns that are automatically reset as soon as the value causing the fault comes back within the boiler's normal working range.

Listed below are some anomalies that can be caused by simple, user-solvable problems.

If the problem remains after two attempts at resetting, contact the Ferroli Service Centre.

For other faults, refer to section 3.4 "Troubleshooting".

	Fault Cure
	No burner ignition	Make sure that the gas cocks ahead of the boiler and on the meter are open.Press the RESET button (for 1 second).In case of repeated shutdowns, contact the Ferroli Service centre.
	Low system pressure	Fill the ‘system to 1-1.5 bar.

Before calling a Ferroli service engineer, check that the problem is not due to there being no gas or electricity, or low system pressure.

2. INSTALLATION

2.1 General Instructions

This device must only be used for the purpose for which it is specially designed. This unit is designed to heat water to a temperature below boiling point and must be connected to a heating system and/or a water supply system for domestic use, compatible with its performance, characteristics and its heating capacity. Any other use is considered improper.

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 RECOMENDATION OF BS STANDARDS, ANY LOCAL REGULATIONS AND THE RULES OF COMPETENT WORKMANSHIP.

IN IE, THE INSTALLATION MUST BE CARRIED OUT BY A COMPETENT PERSON IN ACCORDANCE WITH THE CURRENT EDITION OF I.S. 813 "DOMESTIC GAS INSTALLATIONS", THE CURRENT BUILDING REGULATIONS AND REFERENCE SHOULD BE MADE TO THE CURRENT ETCI RULES FOR ELECTRICAL INSTALLATIONS.

Incorrect installation can cause damage or physical injury for which the manufacturer declines any responsibility.

This appliance must be installed strictly in accordance with these instructions and regulations:

The Gas Safety Regulations (Installations & Use).

The Local Building Regulations.

The Building Regulations (Part L).

The Buildings Standards (Scotland - Consolidated) Regulations.

British Standards Codes of Practice:

B.S. 5440 Part 1 Flues

B.S. 5440 Part 2 Air supply

B.S. 5449 FORCED CIRCULATION HOT WATER SYSTEMS

B.S. 6798 INSTALLATION OF GAS FIRED HOT WATER BOILERS

B.S. 6891 GAS INSTALLATIONS

B.S. 7671 IEE WIRING REGULATIONS

B.S. 4814 SPECIFICATION FOR EXPANSION VESSELS

B.S. 5482 INSTALLATION OF LPG

B.S. 7593 TREATMENT OF WATER IN DOMESTIC HOT WATER CENTRAL HEATING SYSTEMS

B.S. 5546 INSTALLATION OF HOT WATER SUPPLIES FOR DOMESTIC PURPOSES

I.S. 813 DOMESTIC GAS INSTALLATIONS (EIRE ONLY)

Model Water Bye Laws

B.S. 5955-8 PLASTIC PIPEWORK INSTALLATION

For Northern Ireland the rules in force apply

2.2 Boiler location

The unit's combustion circuit is sealed off from the installation room and therefore requires no compartment ventilation.

The installation room must be sufficiently well ventilated to prevent any dangerous conditions from forming in the event of even slight gas leakage. This safety standard is required by the EEC Directive no. 90/396 for all gas units, including those with a so-called sealed chamber.

Therefore the place of installation must be free of dust, flammable materials or objects or corrosive gases. The room must be dry and not subject to freezing.

The boiler is designed to be installed on a solid wall. The wall fixing must ensure a stable and effective support for the appliance, using the bracket and fixings supplied.

If the unit is enclosed in a cupboard or mounted alongside, there must be space for normal maintenance work. Fig. 15 and tab. 1 gives the minimum clearances to leave around the unit.

fig. 15

Table 1
	Minimum
A	2,5 cm
B	20 cm
C 30 cm
D	60 cm(via an openable panel)

Safe Handling of Substances

Care should be taken when handling the boiler

insulation panels, which can cause irritation to the skin. No asbestos, mercury or CFCs are included in any part of the boiler.

Product Handling Advise

When handling or lifting always use safe techniques - keep your back straight, bend your knees, don't twist - move your feet, avoid bending forwards and sideways and keep the load as close to your body as possible.

Where possible transport the boiler using a sack truck or other suitable trolley.

Always grip the boiler firmly, and before lifting feel where the weight is concentrated to establish the centre of gravity, repositioning yourself as necessary.

2.3 Boiler water connections

The heating capacity of the unit should be previously established by calculating the building's heat requirement according to current regulations. For good operation and long life of the boiler, the plumbing system must be well proportioned and always complete with all those accessories that guarantee regular operation and running, room thermostat, trv's etc. The flow and return must be a minimum diameter of 22 mm for the first 3 metres from the appliance.

If the flow and return pipes follow a path where air pockets could form in certain places, it is essential to install vent valves at these points. Also, install type "A" drain cocks at the lowest points in the system to allow complete draining.

The temperature differential between the flow manifold and the return to the boiler should not exceed 20^ C.

A minimum flow of 6 litres/min is required through the heat exchanger. An automatic by-pass is fitted

to the boiler which will provide this flow rate in most circumstances.

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

Before installation, carefully flush all the pipes of the heating system to remove residues or impurities that could affect the unit's operation (BS 7593 Building regs Doc L).

Make the connections to the appliance as shown in fig. 16

fig. 16

Key

1 System flow (22 mm with isolation valve fitted)
2 DHW outlet (15 mm)
3 Gas inlet (22 mm with isolation valve fitted)
4 Cold main inlet (15 mm with isolation valve fitted)
5 System return - 22 mm with isolation valve fitted (c/w filter)
6 Pressure Relief Valve
7 Condense outlet

It is essential to install the isolation valves supplied between the boiler and heating system, allowing the boiler to be isolated from the system if necessary.

The safety valve outlet must be connected to a 15mm diameter copper pipe, with a continual fall from the boiler to allow system water out onto the ground in the event of over-pressure in the heating circuit. If this is not done, and the drain valve trips and floods the room, the boiler manufacturer is not to be held responsible. The outlet should face back against the outer brickwork or building face to prevent harm or injury from hot water discharging in the event of an over-pressurised system.

Make the boiler connection in such a way that its internal pipes are free of stress. If a check valve is installed on the tap water circuit (where applicable), it is necessary to mount a safety valve between the boiler and this circuit (check valve minimum 3 metres from boiler) or a domestic expansion vessel.

The isolation valves and filling kit shown in Fig. 17 is supplied as standard.

1 - The kit consist of the following items shown in fig 17.

fig. 17

Key

A Cold water inlet valve
B Double check valve
C Blanking cap
D Removable connection
E Blanking plug
F Isolation valve
G C/H return valve & filter

2 - Connect the items together as shown in fig. 18.

3 - .....and then connect the completed assembly to the boiler as shown in fig. 19.

Two metallic valve fittings with blue and black buttons, connected by a copper cable (no text or symbols visible)

fig. 18 fig. 19

Interior view of an industrial equipment enclosure with stainless steel fittings and copper pipes (no visible text or symbols)

Make Up Water

Provision must be made for replacing water lost from the sealed system. Reference should be made to BS6798, for methods of filling and making up sealed systems. There must be no direct connection between the boiler's central heating system and the mains water supply. The use of mains water to charge and pressurise the system directly, is conditional upon the Local Water Byelaws. Again any such connection must be disconnected after use.

A filling connection is supplied with the valve set in the boiler box.

Attention - is drawn to the Model Water Byelaws.

Water treatment

If treatment is used ferroli limited recommended only the use of Fernox or Sentinel water treatment products, which must be used in accordance with the manufacturers instructions. for further information contact:

Fernox Manufacturing Co. LTD. Sentinel Performance Solutions Ltd

Cookson Electronics, Forsyth Road The Heath Business & Technical Park

Sheerwater, Woking, surrey, GU21 5RZ Runcorn, Cheshire WA7 4QX

Tel: [phone] Tel: [phone]

Note - If the boiler is installed in an existing system any unsuitable additives must be removed by thorough cleansing. All systems should be cleansed according to B.S. 7593.

Note - In hard water areas treatment to prevent lime scale may be necessary.

Note - It is important that the correct concentration of the water treatment product is maintained in accordance with the manufacturers instructions.

2.4 Connection to the gas system

If necessary the local Gas supplier should be consulted, at the installation planning stage, in order to establish the availability of an adequate supply of gas.

An existing service pipe must not be used without prior consultation with the local Gas supplier.

A gas meter can only be connected by the Local Gas supplier, or by a Local Gas suppliers Contractor. Installation pipes should be fitted in accordance with BS6891.

Appliance inlet working pressure must be 20mbar MINIMUM, for NG and 37 mbar minimum for LPG. Do not use pipes of a smaller size than the combination boiler inlet gas connection (22 mm).

The complete installation must be tested for gas soundness and purged as described in BS689. All pipework must be adequately supported. An isolating gas valve is provided and should be fitted on the boiler gas inlet. Please wait 10 minutes when lighting from cold before checking. Gas pressures should be checked after the boiler has operated for 10 minutes to reach thermal equilibrium. This appliance has no facility to check the burner pressure, however if the inlet pressure and the gas rate are correct the boiler should be set correctly, the gas valve is set and sealed at the factory and should not be adjusted without authorisation from Ferroli Personnel. A combustion test can be carried out to ensure correct air/gas mix (see page 29 combustion analyser testing).

The isolation kit shown in Fig. 17 is supplied as standard.

2.5 Electrical Connections

The unit must be installed in conformity with current national and local regulations.

Connection to the electrical supply

The boiler must be connected to a single-phase, 230 Volt-50 Hz electric supply.

The unit's electrical safety is only guaranteed when correctly connected to an efficient earthing system installed according to current safety standards. Have the efficiency and suitability of the earthing system checked by professionally qualified personnel. The manufacturer is not responsible for any damage caused by failure to earth the system. Also make sure that the electrical system is adequate for the maximum power absorbed by the unit, as specified on the boiler dataplate, in particular ensuring that the cross sectional area of the system's cables is suitable for the power absorbed by the unit.

The boiler is prewired and provided with a cable and fitted with a 3 amp fused plug for connection to the electricity supply. It is important to respect the polarities (LIVE: brown wire / NEUTRAL: blue wire / EARTH: yellow-green wire) in making connections to the electrical supply.

The user must never change the unit's power cable. If the cable gets damaged, switch off the unit and have it changed only by professionally qualified personnel. If changing the electric power cable, use only "HAR H05 VV-F" 3x0.75 mm ^2 cable with a maximum outside diameter of 8 mm.

Access to the electrical terminal block

Follow the instructions given in fig. 20 to access the electrical connection terminal board. The layout of the terminals for the various connections is given in the wiring diagram in the Technical Data chapter.

Key
72 Room thermostat (Volt Free)
138 Outside temperature sensor
139 Room unit (OpenTherm)

Room thermostat

CAUTION: THE ROOM THERMOSTAT MUST HAVE VOLTAGE FREE CONTACTS. CONNECTING 230 V. TO THE TERMINALS OF THE TIME CLOCK AND ROOM THERMOSTAT WILL IRREPARABLY DAMAGE THE P.C.B.

2.6 Flue system

The unit is "type C" with a sealed chamber and forced draught, the air inlet and flue outlet must be connected to one of the following flue systems. With the aid of the tables and methods of calculation indicated, before commencing installation, it is first necessary to check that the flue system does not exceed the maximum permissible length. The current standards and local regulations must be observed.

It should be noted that only Ferroli flue system and accessories should be used on this appliance, as per BS 5440 2000 and C.E. test certification.

Connection with concentric flue system

The unit can be connected to a concentric air/flue duct with a horizontal or vertical outlet as shown on the following drawings. Numerous accessories are available on request to meet the various installation requirements. Please refer to our "flue manual" or the price list.

Standard concentric flue installation

Horizontal flue installation

1. Define the position for installing the unit.
2. If using standard flue (1KWMA53A) this must be installed level, for non-standard flue lengths over 1mtr a fall of 3 mm back to the boiler per metre should be incorporated.
3. Make a hole of diameter 10 - 20 mm greater than the nominal diameter of the concentric pipe used.
4. If necessary, cut the terminal length to size, ensuring that the external pipe protrudes from the wall by between 10 and 60mm (fig. 22a and 22b). Remove the cutting burrs.
5. Connect the flue to the boiler, positioning the seals correctly. Seal the flue into the wall with silicone or sand + cement and cover with wall seals provided.

Flue seals should be lubricated with a silicone type grease to prevent damage (grease not supplied)

Vertical Outlet

The total length in equivalent metres of the concentric flue must not exceed the maximum lengths stated in the following table, note that each bend gives rise to the stated reduction. For example, a duct = 60/100 composed of 1 bend of 90^ + 1 horizontal metre + 2 bends of 45^ + 1 horizontal metre has a total equivalent length of 4 metres.

Vertical flueing

The installation of a concentric vertical flue can be carried out as follows, Install the appliance as previously mentioned in this manual.

1. Connect onto the flue assembly at the top of the appliance a concentric vertical adaptor part number 1KWMA71W,

2. Use the required amount of 1mtr flue extensions (part number 1KWMA56U) inserting them spigot down ensuring the seals are well lubricated with silicone grease (not supplied) and correctly located into the sockets.

3. If required 45^ bends (Part number1KWMA64A) may be used with a resistance value of 0.5mtrs each, the flue should be routed in such away to avoid any unnecessary deviation and thus minimise the amount of bends required.

4. The termination should be made through our concentric flue outlet (part number 1KWMA83U) in conjunction with a roof slate pitched (part number 1KWMA82U) or flat roof (part number 1KWMA81U). The storm collar must be fixed on using the three screws provided and sealed with an external grade silicone (not supplied).

5. For longer flue lengths a 125mm concentric flue system is available.

6. All flue installations must comply with BS5440 part 1 and must only be of Fèrroli manufacture. The vertical flue must continually rise and be supported throughout its length. The flue must be inspected whilst commissioning the appliance to ensure it is sound throughout its length.

This information is for guidance purposes and Fèrroli will in no way be held responsible for incorrect installation following this guide.

Table 2a
	∅ mm60/100	∅ mm80/125
Maximum permissibleduct length (Horizontal)	5 m 15 m
Maximum permissibleduct length (Vertical)	6 m 16 m

Reduction factors for bends
Concentric bend at 90° - ∅ 60/100 mm	1 m
Concentric bend at 45° - ∅ 60/100 mm	0,5 m
Concentric bend at 90° - ∅ 80/125 mm	0,5 m
Concentric bend at 45° - ∅ 80/125 mm	0,25 m

Connection with 80 mm pipe system

The unit can be connected to a system of separate air/flue pipes for a horizontal or vertical outlet as shown fig 23-24. Numerous accessories are available on request to meet the various installation requirements. The components used most frequently are stated in tables 4-5. Please refer to the flue manual or the price list for additional components.

To check you do not exceed the maximum permissible flue length, it is necessary to make a simple calculation before installation:

1. For each component, tables 4 - 5 provide an "equivalent loss in linear metres", depending on the position of installation of the component (with air intake or flue extraction, vertical or horizontal).
   The loss is called "equivalent length" since it is compared to the loss of one metre of flue (defined as equal to 1). For example, a bend at 90^ of 80 in flue extraction has an equivalent loss of 2 linear metres, i.e. it has a loss equal to that of 2 linear metres of flue length.
2. After completely defining the layout of the system of twin flues, add up the losses in equivalent metres, depending on the installation position, of all the components and accessories in the system.
3. Check that the total calculated loss is less than or equal to 75 equivalent metres, i.e. the maximum permissible for this model of boiler.

For complete flue options please contact ferroli or check our comprehensive flue manual.

Table 3
Ref.	N° Pieces	Description	Equivalent loss
2	23	Vertical air pipe ∅80	23,0 m
4	23	Vertical flue pipe ∅80	36,8 m
5	1	80 ∅ vertical flue Kit	12,0 m
			Total 71,8 m

fig. 23

Simple line drawing of a curved pipe with a circular connector at the bottom (no text or symbols)

fig. 24

Table of ∅80 flue and accessory
Table 4 Table 5

Accessories ∅ 80 Accessories ∅		Equivalent losses in metres (linear)
		Vertical	Horizontal	Vertical	Horizontal
Description
Pipe ∅ 80 male-female	1KWMA83W · 1,00 m	1.1	1.62
Bend 45° ∅ 80 mm male - female	1KWMA65W	1.2	1.8
Bend 90° ∅ 80 mm male - female	1KWMA01W	1.5	2.0

0		Equivalent losses in metres (linear)
		Air Flue
		Vertical	Horizontal	Vertical	Horizontal
Description
Horizontal flue terminal	1KWMA86A				5
Horizontal air terminal	[1984]1KWMA85A		2
Vertical flue terminal	[4058]1KWMA84U	12

The stated loss values refer to genuine Ferroli flue accessories.

Terminal Position

Minimum Dimensions of Flue Terminal Positions

A	Directly below an opening, air brick, opening windows, etc.	300mm
B	Above an opening, air brick, opening windows, etc.	300mm
C	Horizontally to an opening, air brick, opening windows, etc.	300mm
D	Below gutters, soil pipes or drain pipes	75mm
E	Below eaves	200mm
F	Below balconies or car port roof	200mm
G	From a vertical drain pipe or soil pipe	150mm
H	From an internal or external corner	100mm
I	Above ground roof or balcony level	300mm
J	From a surface facing the terminal	600mm
K	From a terminal facing the terminal	1200mm
L	From an opening in the car port (e.g. door, window) into the dwelling	1200mm
M	Vertically from a terminal on the same wall	1500mm
N	Horizontally from a terminal on the same wall	300mm
O	From the wall on which the terminal is mounted	N/A
P	From a vertical structure on the roof	150mm
Q	Above intersection with roof	300mm

NOTE

N/A = Not applicable

In addition, the terminal should not be nearer than 150mm (fanned draught) to an opening in the building fabric formed for the purpose of accommodating a built-in element such as a window frame.

Condensing Terminal Positions: If the flue is to be terminated at low level, then the potential effect of the plume must be considered. Plume management kits are available from Ferroli.

The plume should not be directed:

• across a frequently used access route
• towards a window or door
• across a neighbouring property

Connection to collective flues or single flues with natural draught

If you are then going to connect the OPTIMAX HE 31 C boiler to a collective flue or a single flue with natural draught, the flue must be expressly designed by professionally qualified technical personnel in conformity with the standards and rules in force.

In particular, flues must have the following characteristics:

• Be sized according to the method of calculation stated in the standard
• Be airtight to the products of combustion, resistant to the fumes and heat and waterproof for the condensate
• Have a circular or square cross-section (some hydraulically equivalent sections are permissible), with a vertical progression and with no constrictions
• Have the flue conveying the hot fumes adequately distanced or isolated from combustible materials
• Be connected to just one unit per floor, for at most 6 units in all (8 if there is a compensation duct or opening)
• Have no mechanical suction devices in the main ducts
• Be at a lower pressure, all along their length, under conditions of stationary operation
• Have at their base a collection chamber for solid materials or condensation of at least 0.5 m, equipped with a metal door with an airtight closure.

2.7 Condensate outlet connection

The boiler is equipped with an internal air-trap to drain off the condensate. Fit the inspection coupling A and the hose B, pushing it on for approximately 3 cm and securing it with a clamp.

Fill the air-trap with approximately 0.5 ltrs of water and connect the hose to the waste system, or soakaway.

Condensate discharge

Where possible the condensate should discharge into an internal soil pipe or waste system. The minimum pipe diameter required is 22 mm, a trap has already been fitted to the appliance with a flexible tail to facilitate the connection to the condensate discharge pipe.

The pipe should be a solvent weld plastic, not copper, as the condensate has a ph value of 4 (slightly acidic).

Where it is not possible to terminate internally, the condensate discharge pipe may be run outside (see below drawing).

Any external run is subject to freezing, in severe weather conditions. To avoid this the pipework should be installed to dispose of the condensate quickly, with as much as possible run internally, before passing through the wall.

Pipework external to the building should be increased in diameter to 32 or 40 mm solvent weld. It should be run to a external drain or soakaway, with a maximum length of 3 metres.

When a soakaway (condensate absorption point) is used, it should be constructed as shown below, or use a specifically designed unit, for example Mc Alpine SOAK1GR available from most plumbing and heating stockists.

fig. 27

3. SERVICE AND MAINTENANCE

3.1 Adjustments

All adjustment and conversion operations must be carried out by Qualified Personnel such as ferroli Technical Service.

FERROLI declines any responsibility for damage or physical injury caused by unqualified and unauthorized persons tampering with the device.

Gas supply conversion

The unit can function with either Natural Gas or LPG and is factory-set for use with one of the two gases, as clearly shown on the packing and on the unit's dataplate. Whenever a different gas to that for which the unit is preset has to be used, a conversion kit will be required, proceeding as follows:

1 Remove the casing.
2 Open the airtight chamber.
3 Unscrew the gas coupling A on the air/gas mixer.
4 Replace the injector in the mixer with the one contained in the conversion kit.
5 Refit the coupling A and check the connection is gastight.
6 Apply the sticker, contained in the conversion kit, near the dataplate.
7 Fit the airtight chamber and casing back on.
8 Check working pressure.
9 Check CO₂ mixture as detailed (page 29 combustion analyser testing).

fig. 28

3.2 System start-up

Commissioning must be performed by Qualified Personnel.

Checks to be made at first ignition, and after all maintenance operations that involved disconnecting from the systems or an intervention of a safety device.

Before lighting the boiler:

• Open any isolation valves between the boiler and the system.
• Check the tightness of the gas system, proceeding with caution and use gas leak detection fluid to detect any leaks in connections.
• Fill the water system and make sure that 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.
• Make sure there are no water leaks in the system, hot water circuits, connections or boiler.
• Make sure the electrical system is properly connected.
• Make sure that the unit is connected to a good earthing system.
• Make sure there are no flammable liquids or materials in the immediate vicinity of the boiler.
• Vent and spin the pump.
• Ensure the flue system is correctly fitted, including terminal locations.

Ignition

• Open the gas valve upstream of the boiler.
• Purge the air from the installation pipework to the appliance.
• Switch on the boiler electrical supply.
• Press the ⏻ key on the boiler for 5 seconds (part. 7 - fig. 1).
• The boiler is now ready to function automatically whenever there is a demand on the boiler.

In case of an electrical power failure while the boiler is working, the burner will go out. When power returns, the boiler will run the self-test cycle again, after which the burner will automatically re-ignite (if there is still a demand).

Checks during operation

• Check the tightness of the gas circuit and water systems.
• Check the efficiency of the flue and air-flue ducts while the boiler is working.
• Check that the water is circulating properly between the boiler and the system.
• Make sure that the gas valve modulates correctly.
• Check the proper ignition of the boiler by performing various tests, turning it on and off with the room thermostat or remote control.
• Make sure that the gas rate indicated on the meter corresponds to that given in the technical data table in section 4.4 page 35

Turning off

Press the key for 5 seconds ( part. 7 - fig. 1).

3.3 Maintenance

The following operations are strictly reserved for Qualified Personnel, such as corgi registered engineers or Ferroli engineers.

Seasonal inspection of the boiler and flue

It is advisable to carry out the following checks at least once a year:

• The control and safety devices (gas valve, flow meter, thermostats, etc.) must function correctly.
• The flue terminal and ducts must be free of obstructions and leaks.
• The gas and water systems must be sound.
• The burner and exchanger must be clean.
• The electrodes must be free of deposits and correctly positioned.
• The system pressure when cold must be approx 1 bar; otherwise, bring it to that value.
• The expansion vessel must be filled to 1 bar cold with zero system pressure.
• The gas flow and pressure must correspond to that given in table 10 section 4.4 page 35.
• The circulating pump must be vented and free of debris.
  • The return filter cleaned.
• The condensate trap inspection bowl should be cleaned and free of debris.

Opening the casing

To open the boiler casing, you need to follow the sequence given below and the instructions of fig. 29.

1 Using a screwdriver, fully unscrew and remove the 2 screws "A"
2 Open by lowering the panel "B"
3 Lift and take off the casing "C"

Cleaning the boiler and burner

The body and burner must not be cleaned with chemical products or wire brushes. Special care must be taken over all the sealing systems pertaining to the sealed chamber (gaskets, cable clamps, etc.). In addition, it is necessary to pay attention after performing all these operations to check and carry out all the phases of ignition and thermostat operation, the gas valve and circulation pump.

After these checks, make sure there are no gas leaks.

Combustion analysis

It is possible to analyse the combustion through the air and flue sampling points shown in fig. 16.

To make the measurement, it is necessary to:

1) Open the flue sampling point
2) Insert the probe;
3) Press CH button (part. 3, 4 - fig. 1) for 5 seconds to turn on TEST mode;
4) Wait 10 minutes for the boiler to stabilize
5) Take the measurement.

NAT GAS; CO2 reading should be 8.7 to 9.0%

L.P.G; CO2 reading should be 9.5 to 10%

fig. 30

Readings taken with an unstabilized boiler will cause measurement errors.

3.4 Troubleshooting

Fault Diagnosis

In the event of operating problems or trouble, the display will flash and a fault identification code appears.

There are faults that in order to restore operation the RESET button must be pressed (ref.6 - fig. 1); or if the boiler fails to start, it will be necessary to repair the fault (code nos. F1 to F24). Other faults cause temporary shutdowns that are automatically reset as soon as the value comes back within the boiler's normal working range (codes from 25 to 47).

When the boiler starts functioning normally again, the display stops flashing and the fault code disappears.

	Fault Possible cause Cure
A01	No burner ignition	No gas	Check the regular gas flow to the boiler and the air has been purged from the pipes.
		Detection or ignition electrode fault C	check that the electrodes are correctly positioned and free of any deposits
		Defective gas valve Check and change the gas valve
		Incorrect inlet gas pressure Check in	let gas pressure
		Siphon obstructed Check and if necessary change the siphon
A02	Flame detected with the burner off lo	nisation electrode defective Check the ionizing electrode wiring
		Main board defective Check the PCB
A03	High limit protection Flow temperature	sensor not active or correctly located	Check the correct positioning and operation of the low sensor
		No system circulation Check the pump and radiator valves present in the systemCheck operation of the internal by-pass
A04	Flue gas fault Fault F07 happened 3	times in the last 24 hours	Check the flue
A05	Fan problem Tachometer signal inter	upted for 1 hour or longer	Check the wiring and the fan
A06	No flame after the ignition phase (6 times in 4 min.)	Detection electrode fault	Check that the electrode is correct positioned and if necessary change it
		Flame unstable	Check the burner
		Incorrect valve gas Offset	Check Offset at the minimum power
		Flue gas circuit obstructed	Check if flue gas circuit is free
		Siphon obstructed Check and if necessary change the siphon
A41	Flow sensor disconnected	Sensor disconnected	Check the correct position and operation of the flow sensor
F07	Flue gas fault The exhaust gases temp	perature becomes higher than 95°C for 2 minutes.	Check the flue
F10	Flow sensor fault	Sensor damaged or short circuited	Check the wiring or change the sensor
		Sensor damaged or wiring broken	Check the wiring or change the sensor
F11	Return sensor fault	Sensor damaged or wiring shorted	Check the wiring or change the sensor
		Sensor damaged or wiring broken	Check the wiring or change the sensor
F13	Flue sensor fault Sensor damaged or	wiring shorted Check the wiring or change the sensor
		Sensor damaged or wiring broken Check the wiring or change the sensor
F14	Flow sensor fault Sensor damaged or	short circuited Check the wiring or change the sensor
		Sensor damaged or wiring broken Check the wiring or change the sensor
F15	Fan problem Tachometer signal interrupted, fan connection	check the wiring and fan
		Fan damaged, debris in fan Check the fan, clean debris
F34	Supply voltage under 180V. Electric supply problem Check the electrical system
F35	Irregular mains frequency Electric supply problem Check the electrical system
F37	Incorrect system water pressure Pres sure too low Fill the system
		Sensor damaged Check the sensor
F39	External probe fault Sensor damaged or short-circuited Check the wiring or change the sensor
F40	Incorrect system water pressure	Pressure too high above 3 - 5 bar	Check the fill loop not passing
			Check the wiring and sensor
			Check the safety valve
			Check the expansion vessel
F42	Flow sensor fault Sensor damaged Change the sensor
F47	N/A for UK market	Wiring interrupted	Check the wiring
		Sensor damaged Replace the sensor

4. TECHNICAL CHARACTERISTICS AND DATA

4.1 Dimensions and connections

Key

1 System flow (22 mm with isolation valve fitted)
2 DHW outlet (15 mm)
3 Gas inlet (22 mm with isolation valve fitted)
4 Cold main inlet (15 mm with isolation valve fitted)

5 System return - 22 mm with isolation valve fitted (c/w filter)
6 Pressure Relief Valve
7 Condense outlet

4.2 General view and main components

5 Room sealed compartment
7 Gas inlet
8 DHW outlet
9 Cold main inlet
10 CH flow
11 CH return
14 Heating safety valve
16 Premix fan assembly
19 Combustion-compartment
21 Main injector
22 Main burner
29 Internal flue collar
32 Heating pump
36 Automatic air vent
37 Cold water inlet filter
39 Cold water flow limiter
44 Gas valve
56 Expansion vessel
82 Ionisation electrode
95 Motorised Diverting valve
136 Flow meter
145 C.h. pressure gauge
154 Condensate outlet pipe
161 Heat exchanger
186 Return temperature sensor
188 Spark Electrode
191 Flue temperature sensor
194 Domestic plate Heat exchanger
196 Condensate collector
201 Fan Venturi
246 System pressure sensor
278 Double sensor (Safety + Heating flow)

fig. 32

4.3 Hydraulic diagram

fig. 33

Key

7 Gas inlet
8 DHW outlet
9 Cold main inlet
10 CH flow
11 CH return
14 Heating Pressure Relief safety valve
16 Premix fan assembly
32 Heating pump
36 Automatic air vent
44 Gas valve
56 Expansion vessel

95 Motorised Diverting valve
136 Flow meter
154 Condensate outlet pipe
161 Heat exchanger
186 Return temperature sensor
193 Siphon
194 Domestic plate Heat exchanger
201 Fan Venturi
241 Automatic by-pass valve
246 System pressure sensor
278 Double sensor (Safety + Heating)

4.4 Technical data table

Table 10

Powers		Pmax	Pmin
Hi Heating power	kW	25,2	5,3
Hi DHW power	kW	31,5	5,3
Useful Heating Power 80°C - 60°C	kW	24,6	5,2
Useful Heating Power 50°C - 30°C	kW	26,6	5,7
Useful DHW Power	kW	30,8	5,2
Natural Gas delivery (G20)	m3/h	3,33	0,56
Natural Gas supply pressure (G20)	mbar	20	20
LPG flow rate (G31)	kg/h	2,47	0,41
LPG supply pressure (G31)	mbar	37	37
Combustion		Pmax	Pmin
Seasonal Efficiency (SEDBUK)
CO2 (G20 - Natural Gas)	%	9,0	8,7
Gas nozzle (G20 - Natural Gas)	∅ mm	5,6
CO2 (G31 - Propane)	%	10	9,5
Gas nozzle (G31 - Propane)	∅ mm	4,2
Flue temperature 80°C - 60°C	°C	65	60
Flue temperature 50°C - 30°C	°C	46	31
Flue flow rate	kg/h	43	13
Quantity of condensate	kg/h	3,3	1,4
pH of condensation water	pH	4,1
Energy marking (92/42 EEC directive)		★★★★
NOx emission class		5
Heating
Heating temperature adjustment range °C		20 - 90
Maximum working temperature in heating °C		95
Heating circuit PMS safety valve (preset) bar		3
Minimum working pressure in heating bar		0.8
Expansion vessel capacity litres		7
Expansion vessel pre-filling pressure bar		1
Total boiler water content litres		1,5
Hot water
Hot tap water supply Δt 25°C I/min		17,6
Hot tap water supply Δt 30°C I/min		14,7
Hot tap water supply Δt 35°C I/min		12,6
Tap water temperature adjustment range °C		40 - 55
Maximum working pressure in hot water production bar		9
Minimum working pressure in hot water production bar		0.25
Dimensions, weights connections
Height mm		700
Width mm		400
Depth mm		330
Weight empty kg		39
Gas system connection (with isolation valve fitted)	mm	∅22
Heating system connections (with isolation valve fitted)	mm	∅22
Hot water circuit connections (with isolation valve fitted)	mm	∅15
Maximum length of separate flues D=80*(Measurement given in equivalent linear metres - cfr FERROLI calculation system)	meq	75
Electrical power supply
Max electrical power absorbed	W	135
Electric power drawn by the circulator (Speed I-II-III)	W	60-65-70
Electrical protection rating	IP	X5D
Power voltage/frequency	V/Hz	230/50

4.5 Diagrams

Head available for the system

fig. 34

Key

1 - 2 - 3 = Pump selector positions

(In order to obtain maximum hot water output the pump must be left in position 3).

A = Boiler losses of head

4.6 Wiring diagram

graph TD
    A["DBM04"] --> B["203"]
    A --> C["16"]
    A --> D["44"]
    A --> E["32"]
    A --> F["X3"]
    A --> G["X10"]
    A --> H["X1"]
    A --> I["X2"]
    A --> J["X4"]
    A --> K["104"]
    A --> L["104"]
    A --> M["230V 50Hz"]
    A --> N["202"]
    A --> O["101"]
    A --> P["X13"]
    P --> Q["2200.04"]
    Q --> R["62"]
    R --> S["REMOVE TO CONNECT THE CLOCK"]
    S --> T["FB"]
    T --> U["FLOWMETER ON/OFF SWITCH"]
    U --> V["138 72"]
    V --> W["139"]
    W --> X["136 OUT +5V GND 246"]
    X --> Y["X5"]
    Y --> Z["X9"]
    Z --> AA["191"]
    AA --> AB["X6"]
    AB --> AC["278"]
    AC --> AD["X8"]
    AD --> AE["X7"]
    AE --> AF["X10"]
    AF --> AG["X11"]
    AG --> AH["X12"]
    AH --> AI["81"]
    AI --> AJ["82"]
    AJ --> AK["203"]

Key

16 Fan
32 Central heating pump
44 Combination gas valve
62 Time clock (optional)
72 Room thermostat
81 Spark Electrode
82 Ionisation electrode
95 Diverting valve
101 Main p.c.b.
104 Fuse

136 Flowmeter
138 Outside temperature sensor
139 Room unit
186 Return temperature sensor
191 Flue temperature sensor
202 Transformer 230V-24V
203 230v A/C switched supply
246 System pressure sensor
278 Double sensor (Safety + Heating)

GAS BOILER COMMISSIONING CHECKLIST

BOILER SERIAL No.

NOTIFICATION No.

CONTROLS To comply with the Building Regulations, each section must have a tick in one or other of the boxes

TIME & TEMPERATURE CONTROL TO HEATING	ROOM T/STAT & PROGRAMMER/TIMER	PROGRAMMABLE ROOMSTAT
TIME & TEMPERATURE CONTROL TO HOT WATER CYLINDER T/STAT & PROGRAMMER/TIMER		COMBI BOILER
HEATING ZONE VALVES FITTED NOT REQUIRED
HOT WATER ZONE VALVES FITTED NOT REQUIRED
THERMOSTATIC RADIATOR VALVES FITTED
AUTOMATIC BYPASS TO SYSTEM FITTED NOT REQUIRED

GAS RATE ft	m3/hr		3/hr
BURNER OPERATING PRESSURE (IF APPLICABLE) mbar	N/A
CENTRAL HEATING FLOW TEMPERATURE °C
CENTRAL HEATING RETURN TEMPERATURE			°C

GAS RATE ft	m3/hr		3/hr
MAXIMUM BURNER OPERATING PRESSURE (IF APPLICABLE)	N/A		mbar
COLD WATER INLET TEMPERATURE			°C
HOT WATER OUTLET TEMPERATURE			°C
WATER FLOW RATE			Its/min

THE CONDENSATE DRAIN HAS BEEN INSTALLED IN ACCORDANCE WITH THE MANUFACTURER'S INSTRUCTIONS?

YES

FOR ALL INSTALLATIONS CONFIRM THE FOLLOWING

THE HEATING AND HOT WATER SYSTEM COMPLIESWITH CURRENT BUILDING REGULATIONS
THE APPLIANCE AND ASSOCIATED EQUIPMENT HAS BEEN INSTALLED AND COMMISSIONEDIN ACCORDANCE WITH THE MANUFACTURER'S INSTRUCTIONS
IF REQUIRED BY THE MANUFACTURER, HAVE YOU RECORDED A CO/CO2RATIO READING?	N/A	YES	CO/CO2RATIO
THE OPERATION OF THE APPLIANCE AND SYSTEMCONTROLS HAVE BEEN DEMONSTRATED TO THE CUSTOMER
THE MANUFACTURER'S LITERATURE HAS BEEN LEFT WITH THE CUSTOMER

COMMISSIONING ENG'S NAME	PRINT	CORGI ID No.
	SIGN	DATE

SERVICE INTERVAL RECORD

It is recommended that your heating system is serviced regularly and that you complete the appropriate Service Interval Record Below.

Service Provider. Before completing the appropriate Service Interval Record below, please ensure you have carried out the service as described in the boiler manufacturer's instructions. Always use the manufacturer's specified spare part when replacing all controls

SERVICE 1 DATE

ENGINEER NAME

COMPANY NAME

TEL No.

CORGI ID CARD SERIAL No.

COMMENTS

SIGNATURE

SERVICE 2 DATE

ENGINEER NAME

COMPANY NAME

TEL No.

CORGI ID CARD SERIAL No.

COMMENTS

SIGNATURE

SERVICE 3 DATE

ENGINEER NAME

COMPANY NAME

TEL No.

CORGI ID CARD SERIAL No.

COMMENTS

SIGNATURE

SERVICE 4 DATE

ENGINEER NAME

COMPANY NAME

TEL No.

CORGI ID CARD SERIAL No.

COMMENTS

SIGNATURE

SERVICE 5 DATE

ENGINEER NAME

COMPANY NAME

TEL No.

CORGI ID CARD SERIAL No.

COMMENTS

SIGNATURE

SERVICE 6 DATE

ENGINEER NAME

COMPANY NAME

TEL No.

CORGI ID CARD SERIAL No.

COMMENTS

SIGNATURE

SERVICE 7 DATE

ENGINEER NAME

COMPANY NAME

TEL No.

CORGI ID CARD SERIAL No.

COMMENTS

SIGNATURE

SERVICE 8 DATE

ENGINEER NAME

COMPANY NAME

TEL No.

CORGI ID CARD SERIAL No.

COMMENTS

SIGNATURE

SERVICE 9 DATE

ENGINEER NAME

COMPANY NAME

TEL No.

CORGI ID CARD SERIAL No.

COMMENTS

SIGNATURE

SERVICE 10 DATE

ENGINEER NAME

COMPANY NAME

TEL No.

CORGI ID CARD SERIAL No.

COMMENTS

SIGNATURE

Should you require any assistance during the installation

call our Technical Service Helpline on

08707 282 885 option 1

Should you require a service engineer to visit

call our service centre on

08707 282 885 option 2

(For U.K. and Northern Ireland)

For EIRE only call HEATOVENT on

014508166

Phone numbers:

Installer

Service Engineer

BECAUSE OF OUR CONSTANT ENDEAVOUR FOR IMPROVEMENT DETAILS MAY VARY SLIGHTLY FROM THOSE QUOTED IN THESE INSTRUCTIONS.

ALL SPECIFICATIONS SUBJECT TO CHANGE

Please note - to avoid incurring unnecessary expense, in the event of a boiler shut down, check this is not caused by lack of electricity supply, gas supply or low water pressure before calling our Customer Service Helpline.

Lichfield Road, Branston Industrial Estate, Burton Upon Trent, Staffordshire DE14 3HD Tel. [phone] - Fax [phone]

EIRE only:

HEATOVENT Greenhills Industrial Estate,

Greenhills Road, Walkinstown, Dublin 12, IRELAND

Tel [phone] - Fax [phone]