Venting The Boiler By Flushing; Changing To Operation With Lpg; Matching The Burner Output To The Flue System - Viessmann VITODENS 100-W Installation And Service Instructions Manual

Commissioning, inspection, maintenance
Further details regarding the individual steps

Venting the boiler by flushing

A

Changing to operation with LPG

In the delivered condition, the boiler is
set up for operation with natural gas. For
operation with LPG, the gas nozzle must
be changed and the gas type converted
in the control unit.

Matching the burner output to the flue system

To match the burner output to the system's flue pipe length, a correction factor can
be set.
22
C B
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 and then valve
C.
5. Operating pressure ≥ 0.8 bar; adjust
with valve C.
6. Open shut-off valve B.
7. Disconnect drain hose and put to one
side.
Separate installation instruc-
tions.
Changing from LPG to natural gas - see
page 52.
1. Turn ON/OFF switch ON.
(cont.)