Venting The Boiler By Flushing Out (After Venting System); Adjusting Circulation Pump To Suit Heating System - Viessmann Vitodens 100-W WB1B Installation And Service Instructions Manual

Commissioning, inspection, maintenance
Further details regarding the individual steps

Venting the boiler by flushing out (after venting system)

Adjusting circulation pump to suit heating system

In the delivered condition, the circulation pump in heating mode is set to stage
1. If necessary to suit the heating system, the circulation pump can be adjusted
to stage 2.
20
(cont.)
1. Connect the drain hose on shut-off
valve A to a drain.
2. Close shut-off valve B.
3. Open valves A and C and flush
at mains pressure, until no sound of
escaping air can be heard.
4. First shut off valve A then valve
C.
5. Operating pressure
adjust with valve C.
6. Open shut-off valve B.
1. Turn ON/OFF switch ON.
0.8 bar;