Resetting Gas Valve / Setting Nozzle Pressure - Wolf CGU-2-18 Installation And Maintenance Instructions Manual

Readjusting the gas valve:
Carry out the nozzle pressure adjustment in the following
order:
- Remove transparent plastic cap [4] from the gas
combination valve.
- Operate the boiler in emissions test mode (P
- Adjust the maximum pressure at nut [5] (spanner size 10).
- Tightening increases the pressure.
- Releasing reduces the pressure.
- Pull the cable from the gas valve. The boiler goes to
minimum output (P ).
min
- Adjust the minimum pressure at screw [6] in accordance
with nozzle pressure table (Philips screwdriver 6x1);
during this adjustment, hold nut [5] tightly.
- Turning right increases the pressure.
- Turning left reduces the pressure.
- Replace the plastic cap [4].
- Reconnect the cable.
Remove the test equipment:
- Shut down the boiler. Close the gas shut-off valve.
- Pull the hoses off and retighten the test nipple [2] and
the test port [3]. Open the gas shut-off valve.
Check gas tightness of the test nipple,
otherwise there is a danger of gas escaping
and consequent damage to health.
4. Identification:
Carry out the re-designation of the gas type in
accordance with the instructions supplied with the
conversion kit.
38
Readjust the gas valve
Checking / adjusting the nozzle pressure
).
max
[4]
[6]
[5]
[2]
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