Flue Gas Connection; Opening The Control Unit Casing - Viessmann VITODENS 222-F Installation And Service Instructions Manual
Compact gas condensing boiler 4.8 to 35 kw natural gas and lpg version gc no 47-819-15 (19kw); 47-819-16 (26kw); 47-819-17 (35kw)
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Also See for VITODENS 222-F:
- Installation and service instructions manual (172 pages) ,
- Installation and service instructions for contractors (156 pages) ,
- Technical manual (156 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.
Where higher pressure is
required for tightness tests,
separate the boiler and the
gas valves from the gas sup-
ply pipe (undo the fitting).
Flue gas connection
Connect the balanced flue.
Opening the control unit casing
1.
14
(cont.)
3. Vent the gas line.
For conversion to a different gas type
see page 29
3.
2.
Flue gas system installation
instructions.
2x
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