ANDREWS COMBIfl o
52
GB
With reference to the drawing on the previous page, the following steps need to be completed before the
combustion chamber and burner can be inspected:-
• Isolate appliance from gas and electrical supply.
• Remove the left hand door panel (after removing the earth lead), by lifting it upwards and off its hinges.
• Disconnect the gas cock fl ange from the gas valve, by unscrewing the four allen bolts.
• Unplug the gas valve electrical connectors.
• Disconnect the vacuum tube from the gas valve
• Unplug both fan electrical connectors.
• Disconnect spark electrode lead.
• Disconnect ionisation electrode lead.
• Remove the air snorkel from the end of the gas valve venturi by removing the spring clip and pulling off
the fl exible hose.
• Undo the four door nuts and pull the whole burner assembly forwards.
Once assembly is free from the heat exchanger, carry out the following inspection:
• Inspect the black silicone and rope gaskets on the inside of the heat exchanger door. Replace seals if
there are any signs of damage and in any case replacement every two years is recommended.
• Inspect the burner tube for signs of damage. Replace if any damage or burnt areas are found.
Gaskets
Burner tube
Electrodes
• Inspect the inside of the heat exchanger for signs of carbon build up or blockages between the tubes.
• The heat exchanger can be cleaned using a nylon (non-metalic) brush and vacuum cleaner, to remove
loose deposits.
• White vinegar can be used to remove stubborn deposits, by spraying the vinegar onto the coils and then
waiting fi ve minutes before scrubbing with a nylon brush and fi nally rinsing away all deposits with clean
water, until the condense pipe runs clear.
• At the end of the cleaning process unscrew the condense trap bowl, clean out and refi t.
• Assembly is the reverse.
Содержание COMBIflo 100/300
Страница 9: ...ANDREWS COMBIflo 7 GB 3 1 GENERAL DIMENSIONS CONNECTIONS 3 0 TECHNICAL DATA ...
Страница 12: ...ANDREWS COMBIflo 10 GB 3 4 APPLICATION EXAMPLES Single Heating Circuit Simple ...
Страница 13: ...ANDREWS COMBIflo 11 GB Single Heating Circuit Immersion DHW Circulation pump ...
Страница 16: ...ANDREWS COMBIflo 14 GB Heating Circuit External 0 10V control ...
Страница 17: ...ANDREWS COMBIflo 15 GB BMS INTERNET CONNECTIONS ...
Страница 18: ...ANDREWS COMBIflo 16 GB 3 5 WIRING DIAGRAMS PCB 1 ...
Страница 19: ...ANDREWS COMBIflo 17 GB PCB 2 3 ...
Страница 69: ...ANDREWS COMBIflo 67 GB 6 4 COMPONENT ILLUSTRATIONS CONTINUED 1 2 3 4 5 29 8 9 11 6 13 12 7 39 40 41 42 35 10 30 ...
Страница 70: ...ANDREWS COMBIflo 68 GB 32 24 24 24 26 25 23 27 6 4 COMPONENTS ILLUSTRATIONS CONTINUED 32 27 15 33 14 10 28 ...
Страница 76: ...M7889 Rev N Mar 2022 March 2022 ...