Viessmann VITODENS 242-F Installation And Service Instructions Manual page 28
3.2 to 26 kw gas condensing/solar storage combi boiler gas council no. 41-819-18; 41-819-19 natural gas and lpg version
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Also See for VITODENS 242-F:
- Installation and service instructions manual (152 pages) ,
- Technical manual (112 pages) ,
- Installation and service instructions for contractors (144 pages)
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Installation sequence
Installing the boiler
!
Please note
Excessive test pressure may
damage the boiler and the gas
valve.
Max. test pressure 150 mbar
(15 kPa). Where higher pres-
sure is required for tightness
tests, disconnect the boiler
and the gas valves from the
gas supply pipe (undo the fit-
ting).
28
(cont.)
3. Vent the gas line.
For conversion to a different gas type
see page 53
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