Wall hung fanflue roomsealed high efficiency gas boiler

Wall Hung Fanflue Roomsealed High Efficiency Gas Boiler-Free PDF

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Table of contents, 1 Overall information 4 12 Primary circuit pressure switch 31. 1 1 Overall View 4 12 1 Function 31,1 2 Hydraulic diagram 4 12 2 Checks 31. 2 General access and emptying hydraulic 12 3 Removal 31. circuits 5 13 Expansion vessel and temperature pres. 2 1 Nomenclature 5 sure gauge 32,2 2 Body panels 5 13 1 Function 32. 2 3 Control panel 5 13 2 Checks 32, 2 4 Access to the sealed chamber 6 13 3 Removal of the expansion vessel 32. 2 5 Emptying the primary circuit 6 13 4 Removal of the temperature pressure gauge 32. 2 6 Emptying the d h w circuit 6 14 D h w flowmeter filter and flow limiter. 3 Diagrams 7 33,3 1 Wiring diagram 7 14 1 Function 33.
3 2 Functional flow diagrams 8 14 2 Description and location of parts Figure 14 2 33. 3 3 Circuit voltages 9 14 3 Removal of the sensor 33. 4 Fault finding 10 14 4 Checks 33, 14 5 Removal of the flow switch group and d h w circuit. 5 Primary heat exchanger 12 filter 33,5 1 Function 12 14 6 Flow limiter 34. 5 2 Removal 12,5 3 Cleaning 12 15 TEMPERATURE PROBE 35. 15 1 Function 35,6 Condensing heat exchanger 13 15 2 Checks 35. 6 1 Function 13 15 3 Removal of the c h temperature probe 35. 6 2 Removal 13 15 4 Removal of the d h w temperature probe 35. 6 3 Cleaning 14,16 By pass valve 37,7 D h w heat exchanger 15 16 1 Function 37.
7 1 Function 15 16 2 Removal 37,7 2 Removal 15,17 Fan and Air pressure sensor 38. 8 PUMP 16 17 1 Function 38,8 1 Function 16 17 2 Checks 38. 8 2 Checks 16 17 3 Removal of the Fan 39, 8 3 Removal pump 16 17 4 Removal of the Air pressure sensor 39. 8 4 Removal electrical capacitor 17,18 Ignition and detection electrodes 40. 9 Three way diverter valve 18 18 1 Function 40,9 1 Function 18 18 2 Checks 40.
9 2 Checks 18 18 3 Removal 40,9 3 Removal of the electric actuator 18. 9 4 Removal of the tree way diverter valve 19 19 Safety thermostat 41. 9 5 Removal of the diverter group 19 19 1 Function 41. 19 2 Checks 41, 10 Electronic control ignition p c b 20 19 3 Removal 41. 10 1 Function 20, 10 2 Selection and adjustment devices 20 20 Flue temperature probe NTC 42. 10 3 Checking the temperature 21 20 1 Function 42,10 4 Operation lights 22 20 2 Checks 42. 10 5 Setting the boiler control function modes 22 20 3 Removal 42. 10 6 Useful output setting 22 21 Condensate trap 43. 10 7 Reignition frequency setting 23 21 1 Function 43. 10 8 Ignition gas pressure adjustment 24 21 2 Removal 43. 10 9 Setting the d h w flowmeter operation mode 24. 22 Short spare parts list 44,10 10 Checks 25,10 11 Removal of the electronic control p c b 25.
10 12 Thermal control in the mode 27,10 13 Thermal control in the mode 27. 10 14 Ignition and control sequence 28,11 Modulating gas valve 29. 11 1 Function 29,11 2 Nomenclature of the parts 29. 11 3 Adjustment 29,11 4 Checks 30,11 5 Removal of the on off operators coils 30. 11 6 Removal of the gas valve 30,OVERALL INFORMATION.
1 Overall information,1 1 Overall View,Airpressur sensor Flue temperature. Condensing,Fan heat exchanger,Mainheat Expansion,exchanger vessel. Combustion Safety,chamber thermostat,electrodes,Detection Automatic. electrode air release,Combustion,chamber over heat Condensate. Primarycircuit trap,pressureswitch,D h w heat,Divertervalve exchanger.
D h w temp Pump,Gasvalve panel,Figure 1 1,1 2 Hydraulic diagram. Central heating c h operation Domestic hot water d h w operation. C h C h D h w D h w,waterreturn waterflow inlet outlet. Figure 1 2,GENERAL ACCESS AND EMPTYING HYDRAULIC CIRCUITS. 2 General access and emptying,hydraulic circuits,2 1 Nomenclature. 3 Figure 2 2, To remove the side panels loosen the screws B and C Figure.
2 3 bring the base of the panels away from the boiler and lift. them freeing them from the top hooks,Figure 2 1,1 Right side panel. 2 Front panel,3 Control panel lid,4 Control panel cover D. 5 Service panel,6 Left side panel,2 2 Body panels B. Warning isolate the boiler from the mains electrici. ty supply before removing any covering or compo C,nent Figure 2 3 bottom view of the boiler. For the most part of the check and maintenance operations it is. necessary to remove one or more panels of the case 2 3 Control panel. Warning isolate the boiler from the mains electrici. The side panels can be removed only after the removal of the ty supply before removing any covering or compo. front panel nent, To remove the front panel remove screws A Figure 2 2 lift the To gain access to the parts located inside the control panel pro.
panel and remove it ceed as follows,1 Remove the front panel of the case. 2 Loosen the screws B and C Figure 2 3,3 Remove the screws D. 4 Move the lower part of the side panels as indicated in Figure. 2 4 and pull the control panel, When completely pulled out the panel can rotate 45 down. wards to facilitate the service operations on the internal parts. GENERAL ACCESS AND EMPTYING HYDRAULIC CIRCUITS,2 5 Emptying the primary circuit. 1 Close the c h circuit flow and return cocks,2 Remove the front and right panels of the boiler.
3 Open the drain tap I Figure 2 7 until the boiler is completely. 4 Close drain tap again once the emptying has been complet. Figure 2 4, 5 Remove the screws E and remove the service panel Figure. 6 To gain access to the electronic regulation PCB remove the. screws F and remove the control panel lid Figure 2 5. Figure 2 7,2 6 Emptying the d h w circuit,5 Close the d c w inlet cock. 6 Open one or more hot water taps until the boiler has been. completely emptied,Figure 2 5,2 4 Access to the sealed chamber. Figure 2 6, To gain access to the parts contained in the sealed chamber it is. necessary to remove the lid of the sealed chamber For this pur. pose remove the front and side panels of the case remove the. screws G as indicated in Figure 2 6 and remove the lid. 3 Diagrams,3 1 Wiring diagram, Electric supply External controls Three way Pump Fan Ignition Flame detection.
terminal block terminal block diverter valve electrodes electrode. Air pressure,L N sensor,M Primary circuit,M M pressure switch. 3 2 1 bk bu bn,bk bk gnye bu bn gnye bk rd,bn gnye bu. bn bn bu bk bu bk bn bu bk bk bn bu gnye,bk rd wh bu. rd rd bu bk bk wh bu,t rd GND bu t t bu wh,OUT gnye 3 bk wh gn. D h w temperature D h w Modulating Combustion Safety Flue C h temperature Time switch. probe NTC flowmeter gas valve chamber thermostat probe NTC probe NTC. gnye green yellow,Figure 3 1,3 2 Functional flow diagrams.
General layout,Electronic,control p c b,low voltage section. J1 1 Fuse 3 15 A PTC Transformer,diverter valve,Full sequence. ignition device,Heat request on d h w,Electronic,control p c b. low voltage section,J1 1 Fuse 3 15 A PTC Transformer. diverter valve,L LINE N NEUTRAL,ACTIVE CIRCUIT,INACTIVE CIRCUIT Full sequence.
ignition device,Heat request on c h,Electronic,control p c b. low voltage section,J1 1 Fuse 3 15 A PTC Transformer. diverter valve,Full sequence,ignition device,Figure 3 2. 3 3 Circuit voltages,during c h or d h w operation. Electrical voltages with burner on only during c h operation. only during d h w operation,Supply network,diverter valve.
Modulating,0 5 4 5 V DC,Safety pressure,thermostat sensor. Figure 3 3,Components to check, Section of the manual 21 1 7 8 2 9 2 10 10 11 4 12 2 14 5 15 2 16 17 2 18 2 19 2 20 1. note ref in brackets 1 2 3 4 7 8,Fault finding,Lock out signal lamp red. Condensate drain pipe and trap,D h w circuit,D h w flow switch. Fuses Electronic p c b,Electronic p c b,Gas valve modulating operator.
Main circuit pressure switch,Ignition electrode,Detection electrode. Safety valve,Pressure gauge,Flue pipes,Power supply line. Gas supply line,C h circuit,D h w heat exchanger,Diverter valve. Boiler settings,Gas valve on off operators,D h w filter. Main circuit temp probe,D h w temp probe,By pass valve.
Air pressure sensor,Safety thermostat,Flue probe NTC. Expansion vessel,By pressing the reset push button J J J J J. the boiler turns on and operates cor 6,By pressing the reset push button J J J J J. the boiler starts the ignition cycle,The burner doesn t light on the igni. tion sparks continue and the boiler,locks again,By pressing the reset push button J J J J J J.
the boiler starts the ignition cycle,The burner lights on the ignition. sparks continue and the boiler locks,FAult finding. The boiler does not start either in c h J J J,or d h w mode. All the operation lights OFF,The burner doesn t light either in c h J J J J J. or d h w mode, The burner doesn t light either in c h J J J J J J J J.
or d h w mode,Fan doesn t turn,The boiler doesn t control the d h w J J. temperature,Turning the d h w temp adjustment,knob hasn t effect on the modulation. of the flame,The boiler operates correctly on c h,The boiler lights for a short while on J J. Normal operation on d h w function, Section of the manual 21 1 7 8 2 9 2 10 10 11 4 12 2 14 5 15 2 16 17 2 18 2 19 2 20 1. note ref in brackets 1 2 3 4 7 8,Lock out signal lamp red.
Condensate drain pipe and trap,D h w circuit,D h w flow switch. Fuses Electronic p c b,Electronic p c b,Gas valve modulating operator. Main circuit pressure switch,Ignition electrode,Detection electrode. Safety valve,Pressure gauge,Flue pipes,Power supply line. Gas supply line,C h circuit,D h w heat exchanger,Diverter valve.
Boiler settings,Gas valve on off operators,D h w filter. Main circuit temp probe,D h w temp probe,By pass valve. Air pressure sensor,Safety thermostat,Flue probe NTC. Expansion vessel,The boiler does not supply d h w J J J. cold water from the tap,Regular operation in c h mode even.
during a drawing off d h w,On c h mode the temperature of the J J. main circuit reaches 75 C and the c h,system does not heat. The boiler operates correctly on,d h w mode,Incorrect modulation J J J. Noisy bolier J J,The boiler operates correctly but the J J. gas pressure to the burner remains,at minimum,FAult finding.
Poor d h w temperature J J J J J,Low d h w flow rate J J J. Water leaks from the safety valve dur J J J J,ing operation on c h. Water leaks from the safety valve J J J,when the boiler is off. Note Check the gas pressure at the inlet test point of the gas valve 5 A jammed by pass could cause the over heating of the main. see sect 11 3 with the boiler at rest and during operation and circuit and the intervention of the safety thermostat. Useful information can be obtained also from the compare it with the values given on the installation booklet 6 Check the minimum gas pressure at the outlet test point of the. optical indication given by the appliance oper gas valve see sect 11 3 and compare it with the value given. ation lights see section 10 4 3 Check for soundness and absence of obstructions Verify that on the installation booklet. the flue terminal is correctly installed see clearances and en. 1 Check for 230V between line L and neutral N 7 Verify the cleanness of injectors. sure that exhaust gas is not sucked back by the boiler. Verify the integrity of supply cable plug and external fuses 8 Check the pressurization of the expansion vessel Refer to the. Check the polarity of line and neutral connection 4 Check for soundness of the circuit and verify its correct filling installation manual for proper values. 2 Verify the tightness of the gas supply pipe the position of stop see also installation manual 9 d h w pressure too high or flow rate too high If necessary in. valves sert a flow rate limiter 14 6,Primary heat exchanger. 5 Primary heat exchanger,5 1 Function F, The primary heat exchanger A in Figure 5 1 has the function of.
transferring heat produced from combustion of the gas to the H. water circulating in it,Figure 5 1, The hydraulic circuit is composed of 8 elliptical pipes connected. in parallel Figure 5 2,Figure 5 3, 8 Loosen the connection L and move the pipe M downwards. freeing it from the connection of the primary het exchanger. 9 Remove the clip N,10 Loosen the connection O, 11 Free the pipe P from the connection of the condensing heat. Figure 5 2 exchanger lift and rotate it towards right. 12 Remove the heat exchanger by sliding it forwards. 13 Reassemble the boiler carrying out the removal operations in. 5 2 Removal reverse order Fit the clip I with the arrow pointing upwards as. Warning isolate the boiler from the mains electrici illustrated in Figure 5 3. ty supply before removing any covering or compo,nent IMPORTANT do not force the connection G when. tighting it, 1 Remove the case panels and the sealed chamber lid section.
Body panels page 5, 2 Empty the primary circuit of the boiler 5 3 Cleaning. 3 Remove the combustion chamber lid B by unscrewing the If there are deposits of soot or dirt between the blades of the heat. screws C Figure 5 3 exchanger clean with a brush or non metallic bristle brush. 4 Remove the screws D and the plate E In any case avoid any actions that can damage the protective. fAulT fiNdiNG Components to check Section of the manual note ref in brackets 1 2 3 21 1 4 7 8 2 9 2 10 10 11 4 12 2 14 5 15 2 16 17 2 18 2 19 2 20 1 7 8 Lock out signal lamp red Defect Power supply line Gas supply line Flue pipes Condensate drain pipe and trap C h circuit D h w circuit D h w heat exchanger Pump Diverter valve D h w flow switch

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