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30. Checking the gas supply pressure
Seite 19
Fig.: Changing the gas type
Gas test connector
Checking the gas supply pressure
For permissible values, see table "Gas catego
-
ries and supply pressures".
Work on gas components must only be per
-
formed by a licensed gas fitter. Work that is car
-
ried out incorrectly may lead to gas escaping,
resulting in a risk of explosion, asphyxiation
or poisoning.
1. The gas condensing boiler must be off.
Close the gas ball valve.
2. Loosen screw B on the gas test connector of the gas
combination valve with a screwdriver. Do not remove the
screw.
3. Connect the pressure gauge.
4. Open the gas ball valve.
5. Switch ON the gas condensing boiler.
6. After starting the appliance at 100 % load, read the gas
supply pressure/gas flow pressure on the pressure gauge
and enter it in the commissioning report.
7. Turn off the gas condensing boiler, close the gas ball valve,
remove the pressure gauge and tighten the screw in the
pressure test connector.
8. Open the gas ball valve.
9. Check the gas test connector on the gas combination valve
for tightness
10. Complete the enclosed notice and affix it to the inside of
the casing.
11. Close the appliance again.
If any screws are not fully tightened, gas may
escape, leading to a risk of explosion, asphyx
-
iation or poisoning.
B
