Conversion To Natural Gas E - Viessmann VITOCROSSAL 200 Service Instructions Manual

Further details regarding the individual steps

Conversion to natural gas E

Restrictor installation
B C D
F
A
E G
01. Close the gas shut-off valve.
02. Turn off the ON/OFF switch on the
control unit.
03. Switch OFF the mains isolator (out-
side the installation room) or isolate
the mains power and secure against
unintentional reconnection.
Note
For removal of the front panels and
side panel, see from page 30
04. Undo fitting A from the gas supply
pipe.
05. Pull compensation hose G from
the gas train.
Commissioning, inspection, maintenance
(cont.)
06. Release the gas train from flange
E.
07. In the case of a 500 kW burner:
Insert O-ring B, natural gas restric-
tor C and rubber cork gasket D.
Note
The bevel on the natural gas restric-
tor must point towards the gas
train.
In the case of a 400 and 620 kW
burner:
Remove natural gas restrictor C
with rubber cork gasket D.
08. Tighten screws M 5 x 16 cross-wise
(torque: 1.5 Nm).
09. Secure fitting A.
10. Push compensation hose G on to
the gas train.
11. Affix the enclosed label "Set to ..."
over existing label F.
11