Gas Connection - Wolf CGB-2 Series Installation Instructions For Contractors

Connect the gas supply line at the gas connection or the ex-
pansion joint (recommended) using gas connection R½" and
an approved sealant. Ensure the supply line is stress-free.
Only a licensed gas fitter may route the gas pipe
and make the gas connections.
Remove all residues from the heating pipework
and the gas line prior to connecting the con-
densing boiler, particularly in older systems.
Prior to commissioning, test all gas pipes and
connections for leaks. Inappropriate installation
or the use of unsuitable components or assem-
blies may lead to gas escaping, resulting in a
risk of poisoning and explosion.
Install a gas ball valve with fire protection in the
gas supply line upstream of the condensing
boiler. Otherwise explosions may occur during a
fire. Size the gas supply line in accordance with
DVGW-TRGI regulations [Germany].
Mount the gas ball valve in an easily acces-
sible place.
Carry out a tightness test on the gas line
without the gas condensing boiler. Never re-
lease the test pressure via the gas valve.
Gas fittings on the appliance should be
pressure tested to a maximum of 150 mbar.
Higher pressure may damage the gas valve,
resulting in a risk of explosion, asphyxiation
or poisoning. Before pressure testing the
gas line, close the gas ball valve on the gas
condensing boiler.
When installing the gas connection, ensure
all fittings are sufficiently tightened to pre-
vent gas leaks.
3064810_201804
12. Gas connection
Fig: Gas ball valve, straight (accessories)
Fig: Gas ball valve, angled (accessories)
Fig: Gas connection installation
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