22
A
Fig. 12
1.
If the gas connection has not been fitted previ-
ously, seal gas shut-off valve
A
to the gas con-
nection.
When carrying out any work on gas connection fit-
tings, hold with a suitable tool. Never transfer any
forces to the internal components.
2.
Check for leaks.
Danger
Escaping gas leads to a risk of explosion.
Check all connections on the gas side (also
inside the appliance) for tightness.
Note
Only use suitable and approved leak detection
agents (EN 14291) and devices for the leak test.
Leak detection agents with unsuitable constituents
(e.g. nitrides, sulphides) can cause material dam-
age.
Remove residues of the leak detection agent after
testing.
!
Please note
Excessive test pressure will damage the
boiler and gas solenoid valve.
Max. test pressure 150 mbar (15 kPa). If a
higher pressure is required for leak tests,
disconnect the boiler and the gas solenoid
valve from the main supply pipe (undo the
fitting).
3.
Purge the gas line.
Installation sequence
Gas connection
6173886
Installation
