Electrolux GWH-275 R N Service Manual Download | Manualshive

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Before the installation

Make sure, that the supply gas
class is the same as on the type
plate.

Make sure that the max. water
pressure does not exceeds 10 bar.
If necessary install a pressure
reducer.

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Summary of Contents for GWH-275 R N

Page 1: ...S E R V I C E M A N U A L GAS WATER HEATER GWH 275 R N GWH 350 R N EHT Haustechnik GmbH Gutenstetter Straße 10 90449 Nürnberg GERMANY ...

Page 2: ...Content Main features Function diagram Technical data Parts Operation Installation Comissioning Maintenance Recovery and disfunction How to ...

Page 3: ...Main features Piezo electric ignition Aluminium coated copper heat exchanger Pilot cut off by ignition knob Automatic water flow adjuster Thermocouple safety mechanism ...

Page 4: ...Operating diagram GWH 275 R N ...

Page 5: ...7 0 to 19 2 kW B11 54 K 2 4 to 11 0 ltrs min 0 35 bar 10 0 bar 680 x 350 x 230 12 kg II2H3 Output 9 4 to 24 4 kW Type B11 max T 54 K DHW flow 3 5 to 14 0 ltrs min min water press 0 50 bar max water press 10 0 bar Dimensions 722 x 350 x 254 Weight 14 kg ...

Page 6: ...Function diagram Flue gas safety thermostat Flue hood Heat excanger Combustion chamber Thermocouple Burner Gas valve Water switch Ignition electrode ...

Page 7: ...Parts Flue gas safety thermostat Flue hood Heat excanger Combustion chamber Thermocouple Burner Ignition electrode Gas valve Water switch ...

Page 8: ...Operation OVERVIEW GWH OFF Ignite the pilot flame min power mode max power mode Safety function ...

Page 9: ...GWH OFF 1 1 ...

Page 10: ...Ignite the pilot flame 1 1 Push and turn ...

Page 11: ...min power mode 1 1 ...

Page 12: ...max power mode 1 1 ...

Page 13: ...Safety function Flue gas saefty thermostat Thermocouple ...

Page 14: ...Fixing Installation Maintenance OVERVIEW Before the installation Fixing the appliance Installing Gas connection Comissioning Maintenance ...

Page 15: ...Before the installation Make sure that the supply gas class is the same as on the type plate Make sure that the max water pressure does not exceeds 10 bar If necessary install a pressure reducer ...

Page 16: ...water inlet and outlet Fix the attachment for the water intake into the appliance to the cold water inlet Fit the hooks provided into the holes made in the wall Hang the heater on the hooks Fix the cold water intake attachment to the appliance Fix the gas tap to the gas intake attachment and then connect it to the gas pipe Fit the water outlet attachment and connect it to the water outlet on the w...

Page 17: ...Installing Gas connection ...

Page 18: ...and other waste material Fit the appliances onto the plugs and tighten the screw to fix the appliance to the wall Then connect the gas intake to the appliance ensuring that the seal is in place Connect the water intake and outlet to the appliance Ensure that all the seals are properly fitted Replace the control knobs and the temperature selector ...

Page 19: ...Maintenance ATTENTION Do only use original ELECTROLUX spare parts ...

Page 20: ...Maintenance Make sure that the GWH is cooled down Turn off the gas supply Dismount the flue hood Dismount the burner Clean the heat exchanger with a brush Clean the burner Clean the pilot ...

Page 21: ...nction OVERVIEW Decrease of water temperature Increase of hot water flow Decrease of hot water flow No pilot flame ignition No keep up of the pilot flame Out of operation after a while Long time til holding safety valve ...

Page 22: ...is clean Burner pressure is OK Heat exchanger fins are free Decalcify or change the heat exchanger Clean the heat exchanger fins Clean the burner Water flow is goto Increase of hot water flow Clean main gas filter goto Decrease of hot water flow Gas filter is free no too high yes too low no no yes yes no yes yes no no yes Change the gas valve ...

Page 23: ...Increase of hot water flow out We recommend to install a pressure reducing valve Increase of hot water flow Water supply pressure is OK Change the water valve no yes ...

Page 24: ...Decrease of hot water flow Water tub is free Water supply pressure is OK Heat exchanger is free Cold water strainer is free Change the water valve Clean the cold water strainer Clean or change the heat exchanger no yes no yes no yes no Clean the water tub yes ...

Page 25: ...et and capillary are free Pilot gas filter is free Change the gas valve Clean the pilot jet and check the pilot capillay Ignition electrode is OK Change the pilot gas filter no yes no no no yes yes yes Check ignition electrode Change piezo igniter Change the ignition electrode Clean the gas filter Gas filter is free no no yes yes ...

Page 26: ...up of the pilot flame out Flue gas thermostat is OK Thermo couple is OK Electric gas valve is OK Check electric wires and connections Change the electric gas valve Change the flue gas thermostat Change the thermocouple no yes no yes no yes ...

Page 27: ... of operation after a while Flue gas pipe is free Gas supply pressure is OK Flue gas thermostat is OK Change the flue gas thermostat Change the gas valve Clean the flue gas pipe Heat exchanger fins are clean Clean the heat exchanger fins no yes no yes no yes no yes ...

Page 28: ...Pilot jet is free Pilot gas filter is free Thermo couple is OK Change the thermocouple Change the gas valve Clean the pilot jet Gas supply pressure is OK no yes no yes no yes no yes Change the pilot gas filter Contact the gas supplier Clean the gas filter Gas filter is free no yes ...

Page 29: ...the gas filter check the burner pressure change the pilot gas filter check the flue gas thermostat check the thermocouple check the electric gas valve clean the cold water strainer clean the pilot jet check the ignition electrode change the piezo igniter ...

Page 30: ...How to check the gas supply pressure Differential pressure gauge Measuring range min 100 mbar Crosstip screwdriver PH 2 Supply pressure Natural gas 20 mbar Butane 30 mbar Propane 37 mbar ...

Page 31: ...How to check the gas filter Always use new packings ...

Page 32: ... the burner pressure Differential pressure gauge Measuring range min 100 mbar Crosstip screwdriver PH 2 GWH 275 R N GWH 350 R N Natural gas 16 4 mbar 27 6 mbar 35 7 mbar 14 2 mbar Butane 27 6 mbar Propane 35 0 mbar ...

Page 33: ...How to change the pilot gas filter Spanner across flat 8 Crosstip screwdriver PH 2 ...

Page 34: ...How to check the flue gas thermostat Check for continuity Multimeter ...

Page 35: ...How to check the thermocouple 15 to 20 mV Crosstip screwdriver PH 2 Spanner across flat 8 Spanner across flat 11 Multimeter ...

Page 36: ...heck the electric gas valve Crosstip screwdriver PH 2 Spanner across flat 8 e g 1 5 V Battery Dismount the electric gas valve for checking The electric magnet must hold the disc piston against the spring force ...

Page 37: ...How to clean the cold water strainer ...

Page 38: ...hrough the pilot pipe to remove the dirt accumulated inside Undo the jet and clean it by brushing its surface gently Then blow through the hole Replace the pilot ensuring that the seals are properly fitted Crosstip screwdriver PH 2 Spanner across flat 8 Spanner across flat 11 Brush ...

Page 39: ...tion Is no spark visible close the gas cock unplug the ignition wire and ignite about the ignition wire against a metal part of the appliance If a spark is visible now use a new ignition electrode Crosstip screwdriver PH 2 Spanner across flat 8 Spanner across flat 11 Brush ...

Page 40: ...How to change the piezo igniter Dismount the spring ring on the gas valve axis Dismount the 3 retaining rings Change the piezo igniter unit Screw driver Retaining pliers ...

Page 41: ......

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