Viessmann VITOCROSSAL 200 Service Instructions Manual page 10

Commissioning, inspection, maintenance
Further details regarding the individual steps
03. Switch OFF the mains isolator (out-
side the installation room) or the
power supply and prevent unauthor-
ised reconnection.
04. Undo fitting A.
05. Remove Venturi mixing pipe H
from the gas fan.
Pull off the compensation line E
when the boiler is in balanced flue
operation.
06. Undo the gas train from flange G.
07. Remove restrictor C with gasket
D from Venturi mixing pipe H.
08. Secure the gas train (without restric-
tor C and without gasket D, but
including O-ring B) at flange G.
10
(cont.)
09. Secure Venturi mixing pipe H at
the gas fan.
Connect compensation line E
when the boiler is in balanced flue
operation.
10. Secure fitting A.
11. Affix supplied label "Set to..." F
over the existing label.
12. Start the burner (see page 7).
Danger
Escaping gas leads to a risk of
explosion.
Check all fittings for gas tight-
ness.
!
Please note
The use of leak detection spray
can result in incorrect functions.
Leak detection spray must not
come into contact with electrical
contacts.
Conversion for 115 to 311 kW
01. Close the gas shut-off valve.
02. Switch OFF the system ON/OFF
switch at the control unit.
03. Switch OFF the mains isolator (out-
side the installation room) or the
power supply and prevent unauthor-
ised reconnection.