Viessmann Vitocrossal 200 Service Instructions For Contractors page 12

Commissioning, inspection, maintenance
Converting to natural gas LL
Conversion for 87 kW
F
C
D
E
A
B
Fig. 3
12
(cont.)
01. Close the gas shut-off valve.
02. Turn off the system ON/OFF switch at the user
interface of the control unit.
03. Switch OFF the mains isolator (outside the instal-
lation room) or isolate the mains power and
secure against unintentional reconnection.
04. Undo fitting .
A
05. Release gas train
06. Remove restrictor
.
C
07. Secure gas train with O-ring
Restrictor D is no longer required.
08. Secure fitting
A
09. Where present for set gas type: Affix label "Set
to ..." F supplied over the existing label.
10. Check control cables:
Correct connection and kink-free routing
■
Application and seating of retaining clips
■
11. Start the burner.
12. Check for gas tightness.
Danger
Escaping gas leads to a risk of explosion.
Check gas routing components for leaks.
!
Please note
The use of leak detection spray can result in
faulty operation.
Leak detection spray must not come into
contact with electrical contacts.
from flange .
B C
D with O-ring E from flange
to flange
E C
.
.