Venting The Heating System - Viessmann VITODENS 242-F Installation And Service Instructions Manual
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)
Table of Contents
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Further details regarding the individual steps
Venting the heating system
1. Close the gas shut-off valve and
switch the control unit ON.
2. Check whether the air vent screw in
quick-action air vent valve A of the
heating circuit pump is open.
3. Activate venting program (see next
chapter).
Note
For function and sequence of the
venting program, see page 162.
4. Check the system pressure.
Commissioning, inspection, maintenance
(cont.)
A
5. Open the gas shut-off valve.
Activating the venting function
Service menu
1. Press OK and å simultaneously for
approx. 4 s.
2. "Service functions"
3. "Venting"
Venting function is enabled.
4. Ending venting function:
Press OK or ä.
49
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