Immergas VICTRIX 26 2 I Скачать руководство пользователя страница 34

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STV2I ed 11/09

VICTRIX 2 I Export

Technical Documentation

It allows the diversion of the water flow of the primary circuit of the CH system to the

DHW plate heat exchanger and vice versa.

It is powered by the integrated P.C.B.

Three-way valve

(M30)

(

kW X version optional

)

Cuts the power supply to the circuit transformer off (230V/24V)

in low voltage when the current absorbed exceeds 315mA. It is

inserted onto the integrated P.C.B.

Transformer fuse

230V / 24V

(F2)

315 mAT 250 V

delayed fuse

When the safety temperature is exceeded (100 °C) remove the

power supply to the main coils of the gas valve.

It is positioned on the flow pipe at the outlet of the primary heat

exchanger.

Safety thermostat

(E4)

Klixon thermostat

with normally

closed contact

Loads.

It is controlled by the integrated P.C.B. when burner ignition is requested.

It makes the ignition spark.

It is organised inside the sealed chamber in the area under the condensation module at

the side of the expansion vessel.

Igniter

(G2)

Allows the circulation of water in the primary circuit.

It is powered by the integrated P.C.B. with a DHW, CH or anti-freeze request.

Pump

(M1)

They cause an electric spark, on the contact of which the air-gas mix ignites.

One electrode is connected to the igniter G2 while the other electrode is connected to

earth.

Ignition electrodes

(E1)

It is always powered and enables functioning of the boiler only when the main switch is

positioned in

(summer)

(winter) (see integrated P.C.B. functioning).

Integrated P.C.B.

It is a 230V/24V transformer that powers the low voltage adjustment circuit. It is located

inside the sealed chamber in the lower left area.

Transformer

(T2)

It is powered by the integrated P.C.B. when burner ignition is necessary.

It is powered at network voltage rectified by means of a diode jumper (U1) contained

inside the gas valve connector.

Allows the passage of gas to the burner.

Gas valve (Y1)

(

main coils

)

When the condensation module safety temperature is exceeded (167

°C) remove the power supply to the main coils of the gas valve. It

is positioned on the condensation module.

Exchanger safety thermofuse

(E13)

Thermofuse

When the flue safety temperature is exceeded (115 °C) remove the

power supply to the main coils of the gas valve.

It is positioned on the condensation module.

Flue safety thermofuse

(E14)

Thermofuse

Содержание VICTRIX 26 2 I

Страница 1: ...26 2 I Instant wall hung boilers condensation type VICTRIX 26 2 I VICTRIX X 12 2 I X 24 2 I VICTRIX X12 2 I X 24 2 I Condensation type wall hung boiler for central heating only or with an external storage tank ...

Страница 2: ......

Страница 3: ...ne control unit and the DIM multi system distribution manifold The boiler uses a new condensation module its inside part is realised in a stainless steel coil shape and makes up the sealed combustion chamber and the combustion chamber while the external part casing is made in composite material and also encloses the flue hood As well as the new condensation model water gas heat General features ex...

Страница 4: ...er functioning status temperatures safety devices etc and allows connection optional to the Comando Amico Remoto remote control which allows to easily manage and control the boiler at a distance the external probe the zone control unit and the DIM multi system distribution manifold The boiler uses a new condensation module its inside part is realised in a stainless steel coil shape and makes up th...

Страница 5: ...th micro processor with continuous flame modu lation which using a back lit display shows the boiler fun ctioning status temperatures safety devices etc and allows connection optional to the Comando Amico Remoto remote control which allows to easily manage and control the boiler at a distance the external probe the zone control unit and the DIM multi system distribution manifold The boiler uses a ...

Страница 6: ...nnection group Optional VICTRIX X 24 2 I main components and connections Key V Electric connection G Gas supply RU Cylinder unit return optional MU Cylinder unit flow optional RR System filling SC Condensate drain minimum internal diameter Ø 13 mm R System return M System flow N B connection group Optional Height mm Width mm Depth mm 795 440 250 CONNECTIONS GAS DOMESTIC SYSTEM G RR R M 3 4 1 2 3 4...

Страница 7: ... System flow N B connection group Optional Height mm Width mm Depth mm 795 440 250 CONNECTIONS GAS DOMESTIC SYSTEM G RR R M 3 4 1 2 3 4 3 4 VICTRIX X 12 2 I main components and connections Key V Electric connection G Gas supply RU Cylinder unit return optional MU Cylinder unit flow optional RR System filling SC Condensate drain minimum internal diameter Ø 13 mm R System return M System flow N B co...

Страница 8: ...umentation VICTRIX 2 I control panel Key 1 Boiler status signal display 2 Stand by Domestic water Remote Control Domestic water and Heating Reset Selector switch 3 Domestic hot water temperature selector switch 4 Central heating temperature selector switch 5 Boiler manometer ...

Страница 9: ...ner 12 Detection electrode 13 Condensation module 14 Flue safety thermal fuse 15 Exchanger safety thermal fuse 16 Manual air vent valve 17 Sample points air A flue F 18 Negative signal pressure point 19 Positive signal pressure point 20 Igniter 21 Ignition electrode 22 Venturi 23 Fan 24 Air intake pipe 25 System expansion vessel 26 Domestic hot water probe 27 Domestic hot water flow switch 28 Boil...

Страница 10: ... nozzle 11 Venturi 12 Burner 13 System expansion vessel 14 Exchanger safety thermal fuse 15 Detection electrode 16 Flue safety thermal fuse 17 Manual air vent valve 18 Negative signal pressure point 19 Positive signal pressure point 20 Sample points air A flue F 21 Flue hood 22 Igniter 23 Condensation module 24 Air intake pipe 25 Ignition electrode 26 Fan 27 Boiler pump 28 3 bar safety valve 29 Au...

Страница 11: ...P2 10 Air gas Venturi manifold 11 Fan 12 Gas nozzle 13 Detection electrode 14 Flue safety thermal fuse 15 Air intake pipe 16 Condensation module 17 Manual air vent valve 18 Exchanger safety thermal fuse 19 Air sample point 20 p gas pressure point 21 Flue sample point 22 Flue hood 23 Safety thermostat 24 Delivery probe 25 Ignition electrode 26 Burner 27 Condensation module cover 28 System flow swit...

Страница 12: ...tion module 14 Manual air vent valve 15 Exchanger safety thermal fuse 16 Air sample point 17 p gas pressure point 18 Flue sample point 19 Flue hood 20 Safety thermostat 21 Delivery probe 22 Ignition electrode 23 Burner 24 Condensation module cover 25 System flow switch 26 System expansion vessel 27 Air vent valve 28 Boiler pump 29 Automatic by pass 30 System draining valve 31 3 bar safety valve G ...

Страница 13: ...late heat exchanger 32 VICTRIX 26 2 I VICTRIX X 24 2 I This depends on the position of the motorised 3 way valve 33 which at rest allows flow towards the domestic hot water heat exchanger 32 while following a central heating request causes diversion towards the system flow M and return R pipes Head flow rate graphics The progress of the curve that represents the flow rate head ratio available to t...

Страница 14: ...l burner applied to the front while the third is arranged in the condensation chamber which is separated from the combustion chamber by sheet steel see flue circuit VICTRIX 26 2 I and VICTRIX X 24 2 I The first three elements are affected directly by the action of the cylindrical burner applied to the front while the fourth is arranged in the condensation chamber which is separated from the combus...

Страница 15: ...The hydraulic part is made up from a brass unit 2 Operation in central heating phase The shutter 4 contrast spring 3 is not compressed central heating position keeping the passage towards the domestic hot water heat exchanger closed plate and keeping the passage towards the system flow open Both the spring 3 and the shutter 4 are situated inside the brass 3 way valve group body 2 Operation in cent...

Страница 16: ...onnected to a micro switch which on lifting when it is hit by the flow of water closes the electric contact The closure of the contact which is positioned out of the pipe where the water passes allows the integrated P C B to start boiler functioning The flow switch 5 is push fitted onto the system return pipe heat exchanger flow and blocked by two relevant shaped clips The body is made up of two p...

Страница 17: ... part is made up from a brass unit 2 Operation in central heating phase The hydraulic unit is always positioned in the system central heating phase the shutter 4 contrast spring 3 is not com pressed central heating position keeping the passage towards the domestic hot water heat exchanger closed storage tank coil and keeping the passage towards the system flow open Both the spring 3 and the shutte...

Страница 18: ...which on lifting when it is hit by the flow of water closes the electric contact The closure of the contact which is positioned out of the pipe where the water passes allows the integrated P C B to start boiler functioning The flow switch 5 is push fitted onto the system return pipe heat exchanger flow and blocked by two relevant shaped clips The body is made up of two plastic parts that are fixed...

Страница 19: ...the domestic cold water absorbs the heat contained in the primary circuit water see domestic hot water heat exchanger The CH function is excluded in this phase over which the production of DHW has priority The water water heat exchange takes place inside the domestic hot water heat exchanger 3 which is fixed using screws to the domestic hot water inlet 1 and to the domestic hot water outlet 2 The ...

Страница 20: ... start the priority DHW functioning mode It is made up from two parts one in brass and one in plastic that are coupled and blocked by a pin A G1 4 thread is present on the body to which the system filling unit is connected 3 A 8 75 l min flow limiter is inserted at the outlet of the flow switch 1 at 2 bar DHW heat exchanger It is a water water heat exchanger made up from N 14 stainless steel plate...

Страница 21: ...ained in this way is ignited on the surface of the cylindrical burner 8 by the discharge of the ignition electrodes 9 Gas valve The gas valve is equipped with two main coils controlled by the electric circuit and with a pneumatic unit that modulates the outlet gas pressure in 1 1 ratio to the pressure P1 detected on the inlet of the Venturi pipe The calibration of the ratio between the air and gas...

Страница 22: ... the air The nozzle 2 has a different diameter depending on whether natural gas or LPG is used as working with both gases with more or less constant pressure its section establishes the correct gas flow rate There are two pressure points at the ends of the Venturi pipe used to detect the inlet P1 and outlet P2 signals Using two small silicon pipes these signals are taken respecti vely to the pneum...

Страница 23: ...low otherwise no discharge is obtained Detection electrode 9 It is controlled by the integrated P C B and detected burner ignition It also acts as a flue safety device when any air intake problems or problems with the evacuation of combustion products make the burner function below minimum output In this case the flame block due to no detection by the elec trode In order to protect the combustion ...

Страница 24: ...ule Disconnect the system flow and return pipes and the con densate discharge pipe positioned in the lower left part of the module itself Push the stub pipe 1 down in a way to release the module including the flue hood from the flange with sample points Loosen the four screws 6 that fix the condensation module 7 to the support sheet steel 4 which are fixed using the screws 5 to the rear support fr...

Страница 25: ... function by positioning the domestic hot water adjustment selector switch on notch N 6 and the central heating adjustment selector switch on notch N 9 turn the main switch to Reset for 15 seconds and release it when Id identification appears on the boiler display once the calibration menu has been entered the display will show the domestic hot water symbol and the flame signal with power scale at...

Страница 26: ... for at least 2 seconds The boiler will go into chimneysweep mode At this point it is possible to check the calibration values with burner on or exit the chimney sweep mode taking the main switch to the Stand by position Domestic hot water central heating and domestic hot water minimum speed adjustment Central heating position on notch 5 Domestic hot water maximum central heating speed adjustment ...

Страница 27: ... increases Calibration of the minimum CO2 at the end of the adjustment of the maximum CO2 take the central heating temperature selector switch present on the control panel to minimum and check whether the value of carbon dioxide CO2 measured corresponds with that indicated in the table stating the minimum output see table at the side if the values are incorrect take them within the limits by actin...

Страница 28: ...rst two elements version 12 2 I or three elements version 26 2 I of the primary heat exchanger inserted in the sealed combustion chamber 6 which has a sheet steel section on its base 7 that divides it from the condensation chamber 2 and diverts the flow of combustion products to the outside of the module In this way the flue gases before entering the condensation chamber 2 hit the last element 3 o...

Страница 29: ...rrosive action of the acid condensate Configuration with sealed chamber and fan assisted circulation with direct intake for instal lation outdoors in a partially protected place see figure at the side Using a relevant cover 1 to position on the upper part of the sealed chamber it is possible to install the boiler outdoors in partially protected places Intake Cover assembly 1 envisions the removal ...

Страница 30: ...e to fix to the fitting 4 present on the upper part of the sealed chamber placing a shaped gasket between them 6 The flange differs according whether the divided or concentric system is used In the first case the passage for intake of the combustion agent air 5 is closed while in the second case it is made use of Intake Using the divided system connection to the intake pipes takes place in the sam...

Страница 31: ...ues chimneys technical slots to be used exclusively with a unique Immergas condensing appliance Fit a 90 bend 5 to the appliance exhaust pipe which using the necessary vertical extensions 2 must be connected to the relevant exhaust terminal 1 Coupling of the various accessories envisions as well as fitting with gaskets in EPDM peroxide also fastening using pipe clamps 4 These must be alternated wi...

Страница 32: ...th the boiler flue evacuation pipe Using a divided kit 80 80 1 bend 1 m in intake and exhaust with intake grid the maximum length allowed is 30 straight vertical metres System for ducting 80 flexible It is a kit that allows ducting Ø 80 mm of existing flues chimneys technical slots to be used exclusively with a unique Immergas condensing appliance Fit an 87 bend 4 to the appliance exhaust pipe whi...

Страница 33: ...gnition electrodes E2 Detection electrode E4 Safety thermostat E13 Exchanger safety thermofuse E14 Flue safety thermofuse F1 Phase fuse F2 Transformer fuse G2 Igniter M1 Boiler pump M20 Fan M30 Three way valve S2 Selector switch functioning S4 Domestic hot water flow switch S40 System flow switch S7 Central heating timer selector switch S9 Domestic hot water mode selector switch S10 Pump mode sele...

Страница 34: ...t It is powered by the integrated P C B with a DHW CH or anti freeze request Pump M1 They cause an electric spark on the contact of which the air gas mix ignites One electrode is connected to the igniter G2 while the other electrode is connected to earth Ignition electrodes E1 It is always powered and enables functioning of the boiler only when the main switch is positioned in summer or winter see...

Страница 35: ...on the integrated P C B enabling boiler functioning System flow switch S40 Contact in Shut off Following withdrawal of DHW it acts on the integrated P C B causing functioning in DHW mode In stand by it enables functioning in CH mode Domestic hot water flow switch S4 on instant version only Contact in Shut off Depending on the position it allows Low voltage circuit not powered DHW functioning and C...

Страница 36: ...1 additional zone valve by means of CAR which must be set in On Off mode see CAR functioning P C B to a relay optional Guarantees the flow of air in the air gas mixing pipe and the escape of combustion pro ducts It is powered by the integrated P C B Fan M20 Enables functioning in CH mode when the room temperature is below that requested If the CAR is installed the room thermostat must be disconnec...

Страница 37: ...f the K3 relay request This makes sure the ignition is powered G2 which allows to start the ignition cycle by powering the ignition electrodes E1 In the meantime the low voltage circuit excites the relay K1 causing the closure of the 2 contacts which with the consent of the flue safety thermofuse E14 exchanger safety thermofuse E13 and the overheating thermostat E4 power both the coils of the gas ...

Страница 38: ...s powered simultaneously through the diversion of the K4 relay contact M30 The motor functions until the limit switch 3 opens in when the DHW position has been reached If the contact of the system flow switch S40 is closed circula tion water flow rate in the primary circuit higher than minimum value the low voltage circuit starts the fan M20 and succes sively closes the contact of the K3 relay req...

Страница 39: ...cuit starts the fan M20 and successively closes the contact of the K3 relay request This makes sure the ignition is powered G2 which allows to start the ignition cycle by powering the ignition electrodes E1 In the meantime the low voltage circuit excites the relay K1 causing the closure of the 2 contacts which with the consent of the flue safety thermofuse E14 exchanger safety thermofuse E13 and t...

Страница 40: ...mode When the flame has been detected the fan speed is increased in a way to immediately reach if requested the maximum adjusted value Successively flame modulation takes place with reference to the difference between the temperature set using the DHW temperature selector switch and the temperature detected by the DHW probe B2 When the temperature measured by the DHW probe B2 ex ceeds the value re...

Страница 41: ...e chimney sweep function is exited and the calibration function is activated see heat output adjustment If the main switch is turned S2 for more than 30 seconds the boiler will go to the Stand by status and the error code E08 will be displayed equivalent to Reset selector switch fault To restore appliance functioning the main switch must be turned S2 to the Stand by position ...

Страница 42: ...upling to the Storage tank unit must be eliminated Domestic hot water probe B2 NTC probe 10 kΩ 25 C It is a signal that indicates that the flame has been detected It allows the board to increase or decrease the fan speed after having limited it during the ignition phase Flame detection E2 Indicates that a DHW request is in progress Following withdrawal of DHW it enables boiler functioning in the D...

Страница 43: ... and Ch mode the alarm codes that have intervened and the temperature detected by any external probe on the remote control display Comando Amico Remoto re mote control CAR optional see CAR functioning It is a unipolar relay that allows to power the motor M of the electric 3 way valve M30 It is excited with a central heating request and remains in stand by with a domestic hot water request Three wa...

Страница 44: ...from 25 C to 85 C range 1 or from 25 C to 50 C range 2 Inserted Range 1 Absent Range 2 At every switch off due to the temperature being reached in CH mode a delay of 3 minutes 30 seconds is inserted until the successive re ignition for the same request Central heating timer selec tor switch S7 Absent 30 s Present 3 min Domestic hot water mode selector switch S9 If within 10 seconds from the start ...

Страница 45: ...e falls below 43 C Insufficient circulation If the NTC flow probe B1 detects a temperature higher than 100 C with boiler in stand by the successive burner ignition request is delayed by 20 seconds and only the pump is activated If the successive request takes place with the flow temperature below 70 C the burner ignition delay is annulled Dynamic hysteresis fun ction If the contact of the water ov...

Страница 46: ...7 5 minutes The intervention is signalled with the error code 16 on the boiler control panel The main switch S2 must be turned to the Reset position in order to restore functioning of the appliance Fan safety speed T prevent overheating of the water gas heat exchanger if the boiler temperature detected by the NTC flow probe B1 exceeds 105 C the fan is made to work until the tempera ture drops belo...

Страница 47: ...e any error code or optional external probe temperature correlation factor Degrees symbol External probe connection symbol Connection to Comando Amico Remoto remote control symbol Summer symbol production of DHW only Winter symbol production of DHW and room central heating DHW production phase symbol active Room central heating active phase symbol Chimney sweep function symbol Anomaly presence sym...

Страница 48: ... probe anomaly for instant boilers 06 E06 Reset selector switch fault 08 E08 Calibration function active displayed only on CAR E09 No circulation 10 E10 Storage tank probe anomaly for boilers with storage tank 12 E12 Configuration error 15 E15 Fan anomaly 16 E16 Parasite flame block 20 E20 Insufficient circulation 27 E27 CAR offline or not compatible anomaly 31 Low power supply voltage 37 Loss of ...

Страница 49: ...0 2580 Efficiency 80 60 Nom Min 97 8 94 9 Efficiency 50 30 Nom Min 106 7 103 0 Efficiency 40 30 Nom Min 108 1 107 1 Heat loss at casing with burner On Off 80 60 C 0 41 0 50 Heat loss at flue with burner On Off 80 60 C 0 02 2 00 Central heating circuit max operating pressure bar 3 Central heating circuit max operating temperature C 90 Adjustable central heating temperature Pos 1 C 25 85 Adjustable ...

Страница 50: ...Efficiency 40 30 Nom Min 107 0 106 8 Heat loss at casing with burner On Off 80 60 C 0 89 0 30 Heat loss at flue with burner On Off 80 60 C 0 02 2 00 Central heating circuit max operating pressure bar 3 Central heating circuit max operating temperature C 90 Adjustable central heating temperature Pos 1 C 25 85 Adjustable central heating temperature Pos 2 C 25 50 System expansion vessel total volume ...

Страница 51: ...iciency 40 30 Nom Min 108 1 107 1 Heat loss at casing with burner On Off 80 60 C 0 41 0 50 Heat loss at flue with burner On Off 80 60 C 0 02 2 00 Central heating circuit max operating pressure bar 3 Central heating circuit max operating temperature C 90 Adjustable central heating temperature Pos 1 C 25 85 Adjustable central heating temperature Pos 2 C 25 50 System expansion vessel total volume l 5...

Страница 52: ... 1 35 3 22 32 8 16 0 13760 1 73 1 87 19 0 1 29 1 92 19 5 1 27 2 86 29 2 15 0 12900 1 62 1 64 16 7 1 21 1 69 17 2 1 19 2 53 25 8 14 0 12040 1 52 1 43 14 6 1 13 1 48 15 1 1 11 2 22 22 6 13 0 11180 1 41 1 23 12 6 1 05 1 28 13 1 1 03 1 93 19 7 12 0 10320 1 30 1 05 10 7 0 97 1 10 11 2 0 96 1 66 16 9 11 0 9460 1 20 0 88 9 0 0 89 0 94 9 5 0 88 1 41 14 4 10 0 8600 1 09 0 73 7 5 0 81 0 78 8 0 0 80 1 18 12 ...

Страница 53: ...0 87 2 50 25 5 0 65 2 36 24 1 0 64 2 90 29 5 7 0 6020 0 76 1 92 19 6 0 57 1 82 18 6 0 56 2 23 22 7 6 0 5160 0 66 1 43 14 5 0 49 1 36 13 8 0 48 1 65 16 8 5 0 4300 0 55 1 00 10 2 0 41 0 96 9 8 0 40 1 16 11 9 4 0 3440 0 44 0 66 6 7 0 33 0 63 6 4 0 33 0 76 7 8 3 0 2580 0 34 0 39 4 0 0 25 0 37 3 8 0 25 0 45 4 6 2 0 1720 0 23 0 20 2 0 0 17 0 19 1 9 0 17 0 23 2 4 1 9 1634 0 22 0 19 1 9 0 16 0 18 1 8 0 16...

Страница 54: ...14439 GSM telephone control kit code 3 017182 Relay interface kit for zone valve coupling code 3 017331 Zones control unit kit code 3 011668 Additional system expansion vessel kit 2 litres code 3 017514 Connection unit kit code 3 017494 Top cover kit code 3 017330 Polyphosphate dispenser kit indoor only code 3 017323 Anti freeze electric resistance kit 15 C code 3 017324 Cut off cocks kit code 3 5...

Страница 55: ...imer thermostat wireless code 3 014439 Relay interface kit for zone valve coupling code 3 017331 Additional system expansion vessel kit 2 litres code 3 017514 GSM telephone control kit code 3 017182 Telephone control code 3 013305 Front connection group kit for recessing for VICTRIX X 12 2 I only code 3 017362 Rear connection group kit for recessing for VICTRIX X 12 2 I only code 3 017329 Column a...

Страница 56: ... allow the boiler to start a new ignition cycle Ignition cycle CENTRAL HEATING MODE Main selector switch in winter position Turn the central heating selector switch to maximum and interrupt any domestic hot water requests The pump starts No Check the presence of theTA jumper on clamps 40 41 of the P C B N B the jumper must not be present when external devices are installed such as TA remote contro...

Страница 57: ...he tempe rature set No Check the maximum domestic hot water heating output and adjust it to maxi mum See section D Yes The domestic hot water request is satisfied Yes The burner stays on after the first 10 seconds No The error 01 appears on the display wait for the board to make 2 ignition cycles See error section 01 c Yes The error 02 appears on the display Yes See error section 02 b The error 27...

Страница 58: ...ignition phase No Replace the detection electrode and or relative wiring Check correct position and distance between electrode and burner Check that siphon and the condensate exhaust duct are not blocked Yes There are no combustion products in the air intake pipe N B check the absence of CO2 or other combustion products in the intake pipe No Check the correct positioning of the terminals of all jo...

Страница 59: ...es also if the board detects a loss of the flame signal 6 times in 8 5 minutes ERROR 05 NTC flow probe anomaly The wiring between the flow probe and the board connector X11 ter minals 3 4 is OK No Restore the electric connection replace the wiring Yes Replace the NTC flow probe If the anomaly persists replace the P C B ERROR 06 Domestic hot water NTC probe anomaly The boiler can function in DHW mo...

Страница 60: ... B and fan is OK No Restore the electric connection replace the wiring Yes Replace the fan If the anomaly persists replace the P C B 16 c The wiring between the P C B and fan is OK Check continuity of the cable on clamp 4 of connector X12 No Restore the electric connection replace the wiring Yes Replace the fan If the anomaly persists replace the P C B ERROR 20 Parasite flame block The detection e...

Страница 61: ...ing properly without reset in case the standard functioning conditions are restored If the error persists after few ignition cycles the error 38 becomes error 01 or 02 A 230 VDC are present on the L N terminals of the P C B No Check the electric power supply upstream from the boiler and restore it Yes The P C B fuses are integral No See section E Yes 230 VDC are present on the clamps 3 4 of connec...

Страница 62: ...ace the P C B E The operations stated below are indispensable for checking the quality of the relay electric contacts positioned on the board Replace the fuses checking that there are no short circuited components pump fan gas valve etc Check safety device times and the complete power removal from the gas valve operating as follows close the gas supply and make a functioning request check that aft...

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