Viessmann Vitodens 100 Series Installation And Service Instructions Manual page 20

Installation sequence
Mounting the boiler and making connections
20
(cont.)
2. Carry out a tightness test.
Note
Only use suitable and approved
leak detection agents (EN 14291)
and devices for the tightness test.
Leak detection agents with unsuita-
ble constituents (e.g. nitrides, sul-
phides) can cause material dam-
age.
Remove residues of the leak detec-
tion agent after testing.
!
Please note
Excessive test pressure will
damage the boiler and the
gas train.
Max. test pressure 150 mbar
(15 kPa). If a higher pres-
sure is required for tightness
tests, disconnect the boiler
and the gas train from the
main supply pipe. Undo the
fitting.
3. Purge the gas line.