Combustion Casing Removal; Checking Gas Inlet Pressure; Checking The Gas Supply Pressure - Bosch Condens 8300i W Installation And Maintenance Instructions Manual

Commissioning
7.6

Combustion casing removal

▶ Remove the combustion cover.
Fig. 30 Removing the combustion cover
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7.7

Checking gas inlet pressure

7.7.1

Checking the gas supply pressure

▶ Switch off the appliance and close the gas isolator.
▶ Unscrew the screw on the test point for the gas supply pressure and
connect a pressure gauge.
T10
Fig. 31 Gas valve test points (above: SIT valve, below: Honeywell valve)
▶ Open the gas isolator and switch on the appliance.
▶ Ensure that there is heat transfer by opening the radiator valves and
zone valves.
▶ Set the chimney sweep mode and start up the appliance at maximum
rated output.
▶ Check the required gas supply pressure according to table 16.
Commissioning must not take place outside of the permissible pressure
range.
▶ Identify the cause and rectify the fault.
▶ If this is not possible: isolate the appliance on the gas side and notify
the gas supplier.
If the operating inlet pressure cannot be achieved there may be an issue
with the gas supply meter (NG), cylinder regulator (LPG), or pipe sizing
(Ref AS/NZS5601). This must be resolved before proceeding.
▶ Exit the chimney sweep mode.
▶ Switch off the appliance, close the gas isolator, remove the pressure
gauge and tighten the screw.
Condens 8300i W – 6721841533 (2022/12)
0010024761-002