CETI - Bajo NOx Baixo NOx Bas NOx Low NOx - Water heater COINTRA - Free user manual and instructions

USER MANUAL CETI - Bajo NOx Baixo NOx Bas NOx Low NOx COINTRA

A73023711 - Rev. 02 - 2022-12 CONTRE Energy-related Products BAJAS EMISIONES Bajo NOx _ Baixo NOx - Bas NOx Low NOx L FF I

° EI A73023711 - Rev. 02 - 2022-12

A73023711 - Rev. 02 - 2022-12

A73023711 - Rev. 02 - 2022-12

A73023711 - Rev. 02 - 2022-12

• C3 A73023711 - Rev. 02 - 2022-12

A73023711 - Rev. 02 - 2022-12

A73023711 - Rev. 02 - 2022-12

A73023711 - Rev. 02 - 2022-12

42 [FR | A73023711 - Rev. 02 - 2022-12

A73023711 - Rev. 02 - 2022-12

A73023711 - Rev. 02 - 2022-12

A73023711 - Rev. 02 - 2022-12

© S ACCESSOIRE EN OPTION

A73023711 - Rev. 02 - 2022-12

COINTRA. CETI GENERAL WARNINGS Please read the warnings in this in- Struction booklet carefully, as they pro- vide important information on installa- tion, use and maintenance. This instruction booklet is an integral and essential part of the product and the user must store it carefully so it can be consulted whenever necessary. elf the unit is sold or given to another owner or if its location is changed, the manual must go with it so the new ow- ner or installer can consult it. ‘Installation and maintenance must be performed by an authorized tech- nician, in compliance with applicable regulations and the manufacturer’s in- structions. eIncorrect installation or inadequate maintenance can cause personal inju- ry or material damage. The manufac- turer does not accept any liability for damage caused by errors in installa- tion and use or by failure to follow the instructions provided. Before doing any cleaning or mainte- nance work, disconnect the unit from the power supply using the system switch or another cut-off device. en the event of a fault or malfunction, disconnect the unit and only have it repaired by an authorized technician. Only use professionally qualified per- sonnel. Repairs and component repla- cements may only be carried out by authorized technicians using original replacement parts. Failure to comply With the above may compromise the safety of the unit. «Regular maintenance performed by qualified personnel is essential to en- sure proper operation of the unit. This unit must only be used for its in- tended purpose. Any other use is con- sidered inappropriate and therefore dangerous. eUnpack the unit and check that it is in perfect condition. The packing ma- terials are a potential source of dan- ger, and must be kept out of reach of children. ° The unit can be used by children aged 8 years and over and by persons with impaired physical, sensory or mental abilities or lacking experience or the necessary knowledge, provided they are supervised andinstructed inits safe use and they understand the hazards associated with its use. Children must not play with the unit. The units clea- ning and maintenance to be done by the user can be performed by children aged 8 and over if they are supervised “ EI A73023711 - Rev. 02 - 2022-12

CETI =. at all times. product. This representation can have elfin any doubt, do not use the unitand slight and insignificant differences vis- consult your supplier. a-vis the product supplied. + Dispose of the unit and its accessories UNIT FOR DOMESTIC USE, NOT in compliance with applicable regula- SUITABLE FOR INDUSTRIAL USE tions. °The images included in this manual are a simplified representation of the This symbol means “Caution,” and is displayed next to safety warnings. Observe these VAN warnings strictly to prevent dangerous situations or injury/damage to people, animals and materials. Tr This symbol refers to information that does not include hazards for people or materials. The CE marking certifies that products meet the fundamental requirements of the C € applicable European directives. The declaration of conformity can be requested from the manufacturer. A73023711 - Rev. 02 - 2022-12 EN 59

1.3 Control panel keys.

2 INSTALLATION INSTRUCTIONS

2.1 General instructions

2.2 Installation location.

2.3 Installing the water heater

2.4 Hydraulic connections

2.5 Gas connection …

2.6 Electrical connections.

2.7 Air and flue gas ducts.

2.7.1 Connection with coaxial pipes

2.7.2 Connection with separate pipes

3.1.3 Electronic board replacement.

3.2.1 Before turning the water heater on.

3.2.2 Checks during operation

4 CHARACTERISTICS AND TECHNICAL DATA

4.1 Dimensions and connections

4.2 Overview and main components

4.3 Technical Data Table

The new CETI is a COMPLETELY SEALED high-performance water heater with low environmental pollution emissions for providing domestic hot water, supplied with Natural Gas or LPG and fitted with a latest technology burner, with high modulation, which reduces the emission of pollutant gases and provides stable and precise combustion. It also includes a fan that works in combination with the burner, and from an intuitive and touch-sensitive microprocessor control system. This water heater can also work together with solar panels.

FLAME: This symbol lights when the burner is on. TAP: This symbol lights when water flows through the unit. FAN: This symbol lights when the fan's motor is on. ECO: This symbol lights when the ECO function is enabled. TOP DIGITS:

1. Water temperature (shows the real

temperature of the water outlet by default)

2. Temperature setpoint (touching the + or -

1.3 Control panel keys

LOINTRA SYMBOL DESCRIPTION ECO ECO Function: This key is used to enable/ disable the ECO mode. STANDBY: This key is used to put the unit into STANDBY mode and/or OPERATIONAL mode.

These keys change the temperature setpoint, both NORMAL and ECO, and the internal parameters.

This Gas Water Heater OPERATES as follows: + STANDBY (in Stand-by Mode) + OPERATIONAL: + NORMAL Mode + NORMAL Mode with support from Thermal Solar Energy + ECO Mode + ECO Mode with support from Thermal Solar Energy A73023711 - Rev. 02 - 2022-12 EN

From the STANDBY mode, by touching the Standby key the unit becomes OPERATIONAL, turning the display on. From OPE- RATIONAL state, by touching the Standby key the unit goes to STANDBY mode, turning the display off. In both cases an acou- stic signal confirms each action. In STANDBY mode the burner does not start when a tap is ope- ned.

1.5.2 NORMAL Operation

The water heater's NORMAL operation instantly provides dome- stic hot water at the required temperature and set by the user. When the water heater's normal operation is activated, the real water outlet temperature is shown, and the IC | symbol is tur- ned off. Ÿ

1.5.2.1 Temperature Setting

The outlet water temperature can be set with the + or - keys. The NORMAL temperature setting is between 35 °C and 50 °C (the maximum value, initially 50 °C, can be changed via the nS parameter, see Section 3.5). The normal temperature setting is 50 °C by default.

1.5.2.2 Domestic Hot Water

When the tap is opened and a water flow is detected by the flowmeter, the unit begins to operate, and the symbol lights on the display. The fan symbol and the flame symbol come on ac- cording to the state they are in. When the tap opens the bottom digits display shows the current water flow rate ([7 }. The water heater will heat water continually for a maximum of 60 minutes (value which can be changed via the nE parameter, see

Section 3.5), after which it will stop for safety reasons.

This mode is generally used to reduce energy consumption. When this function is enabled the symbol is shown on the top digits display. \ In ECO mode the outlet capacity is limited to 80 % of the maxi- mum value, and a separate temperature setting is used.

1.5.3.1 Enabling ECO mode

lfthis mode is disabled, you must touch the ECO key. The symbol will then light immediately on the display.

During this mode, when opening the tap the burner begins the ignition sequence and when the electrode detects the flame, the unit keeps the burner on and modulating the fan and the gas.

1.5.3.2 Temperature Setting in ECO mode

In this mode the water temperature setpoint can be different to that in the NORMAL mode, but it will never be higher than it. This ECO temperature setting, just like the NORMAL one, can be changed with the + or - keys. The ECO temperature setting is therefore between 35 °C and the NORMAL temperature setting. The normal ECO temperature setting is 42 °C by default.

1.5.3.3 Disabling ECO mode

To deactivate this mode, touch the ECO key on the control panel. The |" ]symbol goes off.

To operate the water heater together with solar panels and use the solar energy they supply, there are some parameters that de- fine the water heaters behavior. The water heater will only acti- vate when the inlet water temperature, produced by solar energy, is lower than the set temperature. In the description of parameters (see Section 3.5), FC must be on “ON”, as there are 3 other key parameters: S1: Hysteresis to turn the burner on (°C) S2: Hysteresis to turn the burner off (°C) ti: Delay time to turn the burner on (seconds) + Whentheinlet water T is < (setting T - St), the burner starts the t{ timing, or the time after which the burner ignites. + When the inlet water T is > (setting T + S2), the burner turns off. Once the burner has ignited, for the first 30 seconds, to prevent it from continuously going on and off when starting, the control unit automatically increases the turned off T to the setting T + 30 °C. To change these parameters, S1, S2 and t1, see Section 3.5 Parameter list.

• EI A73023711 - Rev. 02 - 2022-12

2.1 General instructions

The installation must only be performed by an authorized installation technician, as must the electrical, gas and fumes/air exhaust/intake connections respectively, complying with all instructions provided in this manual, the EN 26 standard, as well as the local regula- tions for installing and venting combustion products.

2.2 Installation location

+ The combustion circuit is sealed off from the installation envi- ronment, so the unit can be installed in any room. However, the room must be sufficiently ventilated to prevent dangerous situations if there is a gas leak. + REGULATION (EU) 2016/426 stipulates the safety standards for all installations that work with gas, including those with a sealed chamber. + The unit can operate in a location partially protected in accor- dance with the EN 26 standard. In any case, the unit must be installed in a location free of dust, flammable objects or materials, or corrosive gases. The unit can be installed on the wall: + Aïttach to the wall according to the dimensions shown in

Section 4.1. The wall installation must be firm and stable.

+ Do not install the unit over a heat source. Tr the unit is installed inside a closet, for exam- ble, or if it connects laterally to other elements, a space must be left to remove the unit’s casing and to perform regular maintenance work. [A] Lateral > 2 cm [B]> 50 cm [CI Front > 2 em

2.3 Installing the water heater

Before installing the water heater make sure the water and gas connections are correctly secured, identified and posi- tioned. See the dimensions and connections in

The installation template is on the back of the packaging. Cut it out and place it on the wall at the correct height (check dis- tances), making sure that the template is as horizontal as pos- sible (use a level). 2 Mark the position of the attachment holes. 3 With a drill and @ 8 mm bit, make the attachment holes and attach the expansion plugs. 4 Remove the unit from the packaging, take out the bag of ac- cessories that comes with the unit, remove the screws and/or attachment hooks and place the unit in its position. Make sure all the documentation is provided. Remove the plugs from the water and gas connections. On the rating plate check the destination country reference and type of gas for which the supplied unit is regulated. “ou A73023711 - Rev. 02 - 2022-12

2.4 Hydraulic connections

Never support the water heater on water/ gas connections. Make the connections in accordance with the dimensions and connections in Section 4.1.

The inlets (water and gas) and water outlet are identified on the bottom of the unit. All are 1/2”.

le) = e = SYMBOL | DESCRIPTION CDINRA CETI 12 Symbol for the mains WATER inlet Symbol for the mains GAS inlet Symbol for the HOT WATER outlet If the water hardness is over 25 ‘fH (1 °fH = 10 ppm CaCO3), the water must be trea- ted to avoid possible deposits on the unit.

Before connecting, check that the unit has been prepared for operation with the fuel type and carefully clean all the gas pipes to remove residues that could impair the unit’s operation. Make this connection in accordance with the dimensions and connections in Section

1 Connect the gas inlet (see Section 4.1) in accordance with the applicable regulations of the country where the water heater is installed. 2 Connect with a rigid metal pipe (connection to mains gas supply) or a flexible pipe (approved, do not confuse with flexible elastomer connection) for LPG installation, con- tinuous stainless steel from the wall, adding a shut-off valve between the installation and the unit (AS CLOSE TO THE UNIT AS POSSIBLE). 3 After completing the connection to the gas mains, check that all gas connections are tight. For this purpose, a tightness test must be performed. To avoid damage to the unit due to excess pressure, leave the gas inlet valve closed. Check that the supply pressure and the flow supplied in the unit are those indicated for the units consumption. See and check the Technical Data Table, Section 4.3. “EI A73023711 - Rev. 02 - 2022-12

COINTRR In installations with flexible pipe for LPG (approved, do not confuse with flexible elastomer connection), pay special at- tention to the following:

+ The pipe must comply with applicable regulations. + Avoid areas with heat emissions. + Prevent the pipe from bending or being pinched shut. + The connections on both sides (gas valve and other compo- nents) must comply with the regulations of the country where the water heater is installed.

2.6 Electrical connections

The unit's electrical safety must be ensured with grounding, as established by safety Standards. Have qualified personnel check the effectiveness of the grounding system, as the manufacturer will not be liable for any damage caused by a lack of grounding on the installation.

The units power cable may not be replaced by the user. lfthe ca- ble is damaged, turn off the unit and call the authorized technical support center to have it replaced. To replace it use only HAR H05 VV-F cable, 3 x 0.75 mm? with a maximum outer diameter of 8 mm.

2.7 Air and flue gas ducts

EE This is a type C unit, with a sealed chamber and forced draft. The air inlet and flue gas outlet must be connected to systems such as those indicated below. The unit is approved for operation with all configurations of the Cxy flue shown on the technical data card (some of these are shown as an example below). Itis however possible that some configurations are limited or pro- hibited by law, standards or local regulations. Before installing, check and strictly comply with the requirements in question. Also comply with the provisions for hanging on walls and/or ceil- ings and the minimum distances to windows, cables, ventilation openings, etc., Section 2.2.

2.7.1 Connection with coaxial pipes

Fig. 2 - Example of a connection with coaxial pipes C1x- Horizontal aspiration and evacuation on the wall. C3x - Vertical aspiration and evacuation on the ceiling. æ> = Air m> = Flue gases Coaxial 60/100 | Coaxial 80/125 Maximum permitted length am 10m Elbow reduction factor 90° im 05m Curve reduction factor 45° 05m 0.25 m For coaxial connection, install one of the following initial accesso- ries on the unit. For drilling dimensions on the wall, see Section 4.1. Horizontal exhaust segments must slope slightly toward the outside to prevent any condensation from returning to the unit. + For coaxial vertical pipe connection @ 60/100 (V010037X0): L=y + For coaxial vertical pipe connection adjusted from @ 60/100 to @ 80/125 (VO10038X0):

COINTRA. CETI + Aspiration duct Kit / coaxial exhaust For 90° connection + coaxial pipe, @ 60/100 (V010040X0):

2.7.2 Connection with separate pipes

+ For connecting separate pipes to @ 80/100 (V010039X0): — 2

Before performing the installation, make sure it does not exceed the maximum permitted length by making a simple calculation:

1. Design the entire system of separate flues, including the ac-

cessories and the exhaust terminals.

2. Check Table 1 and determine the losses in m, (equivalent

meters) for each component, depending on its assembly position.

3. Make sure that the total sum of the losses is less than or equal

to the maximum length indicated on Table 2. Table 1 E Loss in m,, 8 Air | Flue gases outlet È inlet | Vertical |Horizontal . . . 0.5 m MH 05 | 05 1 Fig. 3 - Example of a connection with separate pipes PIPE 1mMH n A 2 2mMH 2 2 4 Cix - Horizontal aspiration and evacuation on the wall. 45° HIH 12 22 Intake and exhaust terminals must be concentric, or 45° MH 12 22 close enough to be exposed to similar wind conditions CURVE 90° HH 2 3 {maximum distance of 50 cm). 90° MH 15 25 C3x - Vertical aspiration and evacuation on the ceiling. 9 80 0° MH + outlet for testing | 1.5 25 Intake/exhaust terminals suitable for C12. HOSE With outlet for testing 02 02 C5x - Separate aspiration and evacuation on the wall or ceiling For condensate discharge 3 or, in any case, in areas under different pressure. T For condensate discharge 7 Aspiration and evacuation may not be placed on Wall air 2 opposite walls. TERMINAL Lai fumes win wind screen 5 C6x - (EN 1866. 2 evacuation with separate certified pipes ALU espere or aumes 8080 ] 2). Only exhaust vent 3 80 4 B3x - Aspiration from the installation environment and evacuation in the collector system. Table 2 … © u gases MAXIMUM PERMITTED LENGTH

CETI 10 CETI 12 CETI 15 CETI 17

IMPORTANT - THE INSTALLATION

/\ | LOCATION MUST HAVE APPROPRIATE 55m 55m 45m VENTILATION.

All adjustments, start-up work and regular checks described be- low must be performed by an authorized technician and in com- pliance with applicable regulations. COINTRA does not accept any responsibility for personal injury or material damages resul- ting from work on the unit by people that are not authorized to do So.

COINTRA CETI water heater is only provided set for one of the following two gases: - G20 (METHANE, NATURAL GAS) - G30 (BUTANE, LPG) Depending on the model purchased, as indicated on the packa- ging and on the technical data plates. The unit can operate with NATURAL GAS (G20, G25) or with LPG (G30, G31). The unit can be adjusted to work with a gas that is different to that set in the factory, with the following steps according to the type of gas conversion:

1 - Closing of the gas stopcock

2 - Conversion via the GAS TRANSFORMATION KIT

Except in changes between G30 and G31

3 - Opening of the gas stopcock

4 - FA parameter setting (type of water heater and gas)

Al components damaged during the conversion work must be replaced.

For every gas conversion in the CETI water heater, except in the LPG model to change between G30 and G31 (from BUTANE to PROPANE and vice versa, without a Kit), the appropriate Transformation Kit must be purchased and installed, according to the type of gas the water heater will work with, and the model in litres of the CETI that we have:

The following steps apply to install the Transformation Kit: + Disconnect the CETI water heater from the power supply. + Remove the burner's collector and mount the new one accor- ding to the instructions of the Transformation Kit provided. + Connect the CETI water heater to the power supply.

3 - Opening of the gas stopcock

Once the water heater has been connected to the new gas (and transformed with the Kit if it proceeds), the gas stopcock must be opened.

4- FA parameter setting (type of water heater and gas)

6 - Gas valve calibration

Except in changes between G30 and G31 Z- Confirmation and exit of parameters setting

8 - Placing the new gas technical data label

1 - Closing of the gas stopcock

Before beginning any conversion: +_ The gas stopcock must be closed. +_ The water heater must then be connected to the new gas that itis to be converted to.

2 - Conversion via the GAS TRANSFORMATION KIT

Except in changes between G30 and G31 The conversion for operation with a gas that is different to that set in the factory must be performed by an authorized technician, using original parts and in compliance with the applicable regulations of the country of use.

A simple setting must be made on the electronics; simply configu- re the FA parameter correctly. This indicates the water heater's model type, that is, the litres and type of gas setting: + Setthe water heater in STANDBY using the Standby key. + _Activate the parameter list by pressing the ECO key for 5 se- conds until PP symbol appears on the display. + Touch the Standby key. The first FA parameter appears. + Touch the Standby key in order to enter into the configura- tion of the water heater model. + Touch the + or - keys to set the correct FA value, according to the water heater model and type of gas (see Table 3.5.1). + Touch the Standby key to confirm the configured FA value. The FA symbol appears. These steps always apply for the following 2 cases (A and B): A. Gas conversion from G30 to G31, Butane to Propane and vice versa (from G31 to G30. Propane to Butane) If you have purchased the CETI LPG model, which will be preset at the factory to G30 (Butane), to convert it to G31 (Propane) the FA parameter must simply be set, which in this example would be the following setting: A73023711 - Rev. 02 - 2022-12

COINTRA. CETI Model: _10L/12L/15L/17L From factory value, G30: 3 1 3 / 8 113 to the new value, G31: 21 2 1 7 112 According to the litres of the water heater model, as shown in the parameter table (see Section 3.5.1). To convert the other way, always with the CETI LPG model, from G31 to G30, the process would be the same up to this point, changing the FA parameter with the corresponding value. B. Gas conversion with Transformation Kit Ifthe gas conversion has been performed by converting the water heater, the FA parameter must also be set first, according to the gas that the CETI water heater will work with: Model: _10L/12L/15L/17L - Transformed to G20: 1/111/767/1 - Transformed to GLP (G31): 21217 1/12 (G30): 3 / 3 / 8 / 13 - Transformed to G25: 4/4 1 9 / 14 According to the litres of the water heater model, as shown in the parameter table (see Section 3.5.1).

5 - FH parameter setting -- Only in the CETI 10 model

+ Only in the CETI 10 model, after confirming its FA value, touch the + key twice and the FH parameter appears. + Selected FH, touch the Standby key in order to enter into the configuration of its FH value. + Touch the + or - keys to set the FH value according to the type of gas of the CETI 10 model, as indicated accordingly in Table 3.5.1. +_ Touch the Standby key to confirm the configured FH value in the CETI 10 model. The FH symbol appears.

6 - Gas valve calibration

Except in changes between G30 and G31 The gas valve must be calibrated for every gas conversion on the CETI that has been converted with the corresponding Kit (that is, for every conversion except the LPG model, which converts from G30 to G31 and vice versa). Follow Section 3.1.2 entirely to perform this step correctly. Z- Confirmation and exit of parameters setting To complete and exit the parameters setting: + Touch the + key until the last qU symbol appears. +_To confirm from this final “parameter”, the Standby key must be touched. The water heater returns to STANDBY.

8 - Placing the new gas technical data label

To show that the gas conversion has been correctly completed, place the new adhesive technical data label on the water heater's casing, replacing the one that came from the factory with the new one: - Additional G31 gas label which comes with your CETI LPG (for conversions from G30 to G31). - Corresponding gas label (G20, G30, G31, G25) which comes with the corresponding Transformation Kit.

3.1.2 Gas valve calibration

This must only be performed in the following cases: - Gas valve replacement - Electronic board replacement - Gas change with Transformation The gas valve (with integrated modulating actuator) is not ca- librated mechanically; the minimum and maximum capacity is adjusted electronically via 2 parameters: Par. Description Range PH | Total Maximum Pressure (entire burner) 20-F0 P2 | Minimum Pressure (burner minimum section) | 20 - FO 1 Check that the supply pressure according to the type of gas complies with that shown on the Technical Data Table (see

2 On the same Technical Data Table, check the Maximum and Minimum Pressure values of your water heater, according to the water heater model and type of gas, to take them into ac- count in the following steps. 3 Connect a gauge to check the outlet pressure of the gas valve. Set the water heater in STANDBY using the Standby key. 5 Activate the parameter list by pressing the ECO key for 5 se- conds until PP symbol appears on the display. 6 Touch the Standby key. The first FA parameter appears. 7 Touch the + key once and the first parameter of the valve to be calibrated appears, PH, relative to Maximum Pressure. 8 Selected PH, touch the Standby key in order to enter into its calibration, showing its internal value of the Maximum Pressu- re parameter. 9 To set the PH parameter, touch the + or - keys on the pa- nel until the gauge shows the Maximum nominal Pressure. Wait 10 seconds for the pressure to stabilize. lf the gauge Shows a different value to the maximum nominal pressure, in- crease the PH parameter value in steps with the + key. After each change, wait 10 seconds for the pressure to stabilize. If the gauge shows the same value as the Maximum nominal Pressure, confirm it with the Standby key. The PH symbol appears. 10 To set the next parameter to be calibrated, from PH you must touch the + key 8 times, until you reach the P2 parameter, re- lative to the Minimum Pressure. 11 Selected P2, touch the Standby key in order to enter into its calibration, showing its internal value of the Minimum Pressu- re parameter.

“ EI A73023711 - Rev. 02 - 2022-12

COINTRR 12 To adjust the P2 parameter, touch the + or - keys on the pa- nel until the gauge shows the Minimum nominal Pressure. Wait 10 seconds for the pressure to stabilize. lf the gauge shows a different value to the minimum nominal pressure, re- duce the P2 parameter value in steps with the - key. After each change, wait 10 seconds for the pressure to stabilize. If the gauge shows the same value as the Minimum nominal Pressure, confirm it with the Standby key. The P2 symbol ap- pears. 13 To complete and exit the parameters calibration process, touch the + key until the last qU symbol appears. 14 To confirm from this final “parameter”, the Standby key must be touched. The water heater returns to STANDBY. 15 Disconnect the gauge. 16 Touch the Standby key again to set the water heater OPE- RATIONAL.

3.1.3 Electronic board replacement

When replacing the electronic board, the following additional set- tings must be made: 1 Remove the power supply. 2 Replace the electronic board and restore the power supply. 3 Setthe water heater in STANDBY using the Standby key.

Activate the parameter list by pressing the ECO key for 5 se- conds until PP symbol appears on the display. Touch the Standby key. The first FA parameter appears. 6 Touch the Standby key in order to enter into the configura- tion of the water heater model. By default, in the new board it will be “1”. 7 Touch the + or - keys to set the correct FA value, according to the water heater model and type of gas (see Table 3.5.1). 8 Touch the Standby key to confirm the configured FA value. The FA symbol appears.

9 FH parameter setting -- Only in the CETI 10 model + Only in the CETI 10 model, after confirming its FA value, touch the + key twice and the FH parameter appears. + Selected FH, touch the Standby key in order to enter into the configuration of its FH value. + Touch the + or - keys to set the FH value according to the type of gas of the CETI 10 model, as indicated accordingly in Table 3.5.1. +_ Touch the Standby key to confirm the configured FH value in the CETI 10 model. The FH symbol appears. 10 To complete and exit the parameters setting, touch the + key until the last qU symbol appears. 11 To confirm from this final “parameter”, the Standby key must be touched. The water heater returns to STANDBY. 12 Touch the Standby key again to set the water heater OPE- RATIONAL.

Commissioning of the water heater must be performed by a trained, specialized technician. Checks that must be performed during the first ignition, after maintenance work which requires the unit to be disconnected and after every intervention on the unit's Safety devices or components.

3.2.1 Before turning the water heater on

+ Check the tighiness of the gas installation carefully for leaks on the connections using a soap and water solution. + Fillthe hydraulic installation and check that there is no air in either the unit or the installation. + Check that there are no water leaks in the installation or the unit. + Check that the connection to the electrical system and the grounding are correct. + Check that the gas pressure is correct. + Check that there are no flammable liquids or materials near the water heater. + Do not place the water heater on the floor with the connections facing down, so the connections are not damaged.

3.2.2 Checks during operation

+ Tumthe unit on. + Make sure the fuel and water systems are tight. + Check the efficiency of the air and flue gas ducts while the wa- ter heater is operating. + Check that the gas valve modulates correctly. + Check that the water heater ignites easily by doing a few on and off tests. + Check that the fuel consumption indicated on the meter matches that shown in the Technical Data Table, Section 4.3.

In order for the unit to operate correctly, an authorized technician must perform an annual inspection, checking that: + The control and safety devices (gas valve, flow switch, etc.) work correctly. + The exhaust vent is perfectly efficient. + The air and flue gas ducts and terminal are free of obstacles and leaks. +_The burner and the exchanger have no dirt or deposits. Do not use chemicals or steel brushes to clean them. + The electrode is free of deposits and properly positioned. + The gas and water systems are perfectly tight. + The gas delivery and operating pressure values are as indica- ted on the tables. A73023711 - Rev. 02 - 2022-12 EI :

CETI & A soft, damp cloth may be used to clean the casing and exterior parts ofthe water heater, using soapy water if necessary. Do not use abrasive detergents or solvents.

3.3.2 Opening the casing

To open the casing: 1 Unscrew the screws 2 Remove the front panel 3 Disconnect the Display Panel's wiring

Before doing any work inside the water heater, di- sconnect the power supply and close the gas valve.

The water heater is fitted with an advanced self-testing system. If a problem arises with the unit, the fault symbol will flash on the display and the respective code will be displayed, with an acoustic signal sounding at the same time. If a fault occurs, all gas valves close immediately. The fan continues moving for 30 seconds, until it stops. With the E2 error, the fan will continue moving until the flame signal disappears, at which point it will stop 30 seconds later. To reset the units operation after an error, it is enough to just close the hot water tap, or to touch the Standby key, to put the water heater into STANDBY. With the E2 error, the user must unplug the water heater and plug it in again to reset it. If the error per- sists after these reset steps, the fault must be resolved.

Code Error Possible cause E0 |Ouilet probe fault Water outlet NTC temperature probe sensor open or shorted Et |M The system does not detect a flame after two attempts to ignite, or there is no flame during normal isfire or no flame à operation E2 [There is a flame fault Before starting the system detects the flame, or after the system stops for 5 s and then detects the flame E3 Overheating cut-of Overheating safety cut-off thermostat circuit open thermostat E4 Inlet probe fault Water inlet NTC temperature probe sensor open or shorted E5 Fan fault Speed continuously under 600r/min for 2 s, or the system cannot detect the speed signal E6 |ACS overheating Water outlet NTC probe sensor temperature above 85 °C for 5 s E7 |Valve fault Valves that activate shorted transistors or valves in open circuit E8 |Blocked pipe Fan speed above the wind screen pressure warning speed preset by the software, or above the HC or LC values shown in the parameter menu (see HC and LC parameters) En |ACS time up Maximum continuous heating time, according to nE (60 min by default, see nE parameter) EC /Ec | Display panel connection | Fault on the main electronic card's communication wiring with the display panel

From the STANDBY state, keep the - key pressed for 5 seconds to access the Error History Interface, initially showing HI. Touching the Standby key you begin to see the last 10 Errors that occurred in the water heater. At this point the lower display shows the last error code that occurred, and the upper display shows “01”, beginning to list the errors that occurred. Scrolling through them, 01-10, the last ten water heater error codes appear. Touch the Standby key to exit the history view. Touch the - key to change from HI to recovery of Errors, rE; from this option, keep the ECO key pressed for 5 seconds to delete the history (the 10 Errors) and exit the interface at the same time. From either of the two modes, HI or rE, keep the — key pressed for 5 seconds to exit the error history interface. 70 A73023711 - Rev. 02 - 2022-12

There is a parameter list (which the user cannot change), to make internal settings in the water heater. Access to the Parameter menu is made from the STANDBY state, keeping the ECO key pressed for 5 seconds, until PP appears on the display. Touching the Standby key, the first FA parameter appears on the display. All parameters can be changed from the control panel. The + or - keys are used to scroll through the parameter list, to reach the pa- rameter you want to set. Once you have selected the parameter you want, touch the Standby key and you will see its current value. To change the parameter's value touch the + or - keys until you reach the value you want. To confirm the value touch the Standby key, returning to show the parameter list, to go forward or back to a different parameter to set it. After setting the parameters you want, you must reach qU, the last parameter of the list (touching the + key until you get to it), and confirm the completed configuration by touching the Standby key from this parameter, to exit saving all changes.

4.1 Dimensions and connections

15L-17L 10L-12L a 9 ® Connections Ml | mm) | (mm) | (mm) | God | Hot | Gas CETI 10 CETI 12 | 370 190 525 1/2 185 185 CETI 15 CETI 17

• EI A73023711 - Rev. 02 - 2022-12

4.2 Overview and main components

© S OPTIONAL ACCESSORY

[2] [4] [6] F7] [8] Gas inlet Cold water inlet Domestic hot water outlet (ACS) Gas valve Water flow sensor Cold water temperature sensor Burner assembly Electrode assembly [9] Copper exchanger [10] Combustion chamber [11] Fan [12] Temperature limiter [13] Control panel [14] Gas distributor [15] Hot water temperature sensor [16] Connection hose A73023711 - Rev. 02 - 2022-12 EN 73

CETI =. Brand: COINTRA Type of product: Sealed water water heater

NE (OFTONAL) User Panel Connector

[ao] Warranty Certificate This warranty is only valid for equipment to be marketed, sold and installed in Spanish territory. GUARANTOR: FERROLI ESPANA, S.L., with registered office at Pol. Ind. Villayuda, C/ Alcalde Martin Cobos, 4, 09007 Burgos, guarantees the products listed in this instruction manual in accordance with the modification of 1 January 2022 of Royal Legislative Decree 1/2007 of 16 November, which approves the revised text of the General Law for the Defence of Consumers and Users and other complementary laws. The 3-year warranty period indicated in the aforementioned Royal Decree shall start from the date of installation or, failing that, from the date of purchase. Unless proven otherwise, it shall be presumed that any lack of conformity that is shown 2 years after delivery was not apparent when the good was delivered. Scope of warranty | The warranty does not cover incidents caused bye - Power supply with generator sets or any other system that is not a stable electrical network. - Transport not carried out at the company's expense (to be claimed directly from the carrier). - Handling of the product by personnel unconnected to the guarantor during the warranty period. + If mounting does not comply with the instructions supplied with the machine. - Installation of the machine does not comply with the Laws and Regulations in force (electricity, hydraulics, fuels, etc.). - Faulty hydraulic or electrical installation, faults in fuel supply systems, combustion exhaust outlets, chimneys or drainage systems. - Faults due to incorrect feed water treatment, due to limescale deposits, due to incorrectly carried out descaling treatment, etc. - Faults caused by condensation or atmospheric conditions (ice, lightning, floods, etc.), as well as erratic currents. - Inadequate maintenance, neglect or misuse. - Corrosions caused by inadequate storage. - To be entitled to the warranty claim stated herein, it will be an essential requirement that the equipment is intended for domestic use. - This warranty is valid provided that the standard maintenance operations described in the technical instructions supplied with the equipment are carried out. - Prior to any technical assistance, the guarantor's technical staff must be shown the invoice or purchase receipt of the equipment, together with the corresponding delivery note, if this were of a later date. - The spare parts which are necessary to replace, will be those determined by our Official T.A.S., and in all cases they will be originals from the guarantor. The material replaced under warranty shall become the property of the guarantor. Any complaints shall be lodged with the competent body in this matter. Technical Assistant Service Tel: 912 176 834 - serviciotecnico@cointra.es Www.cointra.es Avda. ltalia, 2, 28820 Coslada (Madrid)