Wolf CGB-75 Assembly And Operating Instructions Manual page 16

Gas connection
Routing the gas pipe as well as making the
gas connections must only be carried out by
a licensed gas fitter. Close the gas ball valve
on the condensing boiler to pressure test the
gas pipe.
Remove all residues from the heating pipework
and the gas pipe prior to connecting the
condensing boiler, particularly in older systems.
Prior to commissioning, test all pipe and gas
connections for leaks in accordance with
local regulations. Only approved foaming leak
detection sprays should be used.
Inappropriate installation or using unsuitable
components or assemblies may lead to gas
escaping, which results in a risk of poisoning
and explosion.
Install a gas ball valve with fire protection
in the gas supply line upstream of the Wolf
condensing boiler. Otherwise explosions may
occur during a fire. Size the gas supply line
in accordance with details laid down in local
regulations.
Gas fittings on the gas burner may be pressure
tested to 150 mbar. Higher pressure may
damage the gas train, resulting in a risk of
explosion, asphyxiation or poisoning.
Close the gas ball valve on the gas condensing
centre to pressure test the gas pipe.
Mount the gas ball valve in an easily accessible
place.
- Prior to installation, ensure that the boiler corresponds to
the gas type available. See the following table for factory
settings subject to type of gas.
16
Installation
Figure: Straight-through gas ball valve (accessory)
Table: Factory settings subject to type of gas
LPG P:
2)
Ws = 20.2 -21.3 kWh/m = 72.9-76.8 MJ/m
3 3
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