Installation Instructions

13
2. Carry out a tightness test.
Note
For the tightness test, use only suita-
ble and approved leak detection
agents (EN 14291) and devices.
Leak detection agents with unsuita-
ble constituents (e.g. nitrites, sul-
phides) can lead to material dam-
age.
Remove residues of the leak detec-
tion agent after testing.
!
Please note
Excessive test pressure may
damage the boiler and the gas
valve.
Max. test pressure 150 mbar.
Where higher pressure is
required for tightness tests,
separate the boiler and the
gas valves from the gas sup-
ply pipe (undo the fitting).
3. Purge the gas line.
Installation sequence
Fitting the boiler and making connections
(cont.)
5609 059 GB
Installation