Converting To Natural Gas Ll - Viessmann VITOCROSSAL 200 CM2 Service Instructions For Contractors

Converting to natural gas LL

(Not in or )
a c
B C D F
A
EG
Fig. 6
01. Close the gas shut-off valve.
02. Turn OFF the ON/OFF switch on the control unit.
03. Switch OFF the mains isolator (outside the instal-
lation room) or power supply and secure against
unintentional reconnection.
04. Undo fitting
A from the gas supply pipe.
05. Disconnect control cables
06. Release the gas train from flange
from the gas train.
G
.
E
Commissioning, inspection, maintenance
07. Remove restrictor
C
08. Secure the gas train (without restrictor
without rubber cork gasket
ring B to flange E . For this, replace the factory-
fitted M5 x 16 screws with the M5 x 12 ones sup-
plied.
09. Tighten the M5 x 12 screws diagonally.
Torque: 1.5 Nm.
10. Secure fitting .
A
11. Plug control cable
G
12. Check control cables:
■ Connection and kink-free routing
■ Fixing and firm seating of retaining clips
13. Affix the label "Set to ..."
label.
14. Start the burner (see page 15).
15. Check for gas tightness.
Danger
Escaping gas leads to a risk of explosion.
Check all fittings for gas tightness.
!
Please note
The use of leak detection spray can result in
faulty operation.
Leak detection spray must not come into contact
with electrical contacts.
with rubber cork gasket D
and
C
) with inserted O-
D
into the gas train.
supplied over existing
F
.
13