Checking The Rotary Damper Setting - Viessmann VITOCROSSAL 200 CM2 Service Instructions For Contractors

Commissioning, inspection, maintenance
Checking the static pressure and supply pressure
Supply pressure (flow pressure)
Natural gas LPG
< 15 mbar < 20 mbar
< 1.5 kPa < 2 kPa
15 to 18 mbar 20 to 42.5 mbar
1.5 to 1.8 kPa 2 to 4.25 kPa
18 to 50 mbar 42.5 to 57.5 mbar
1.8 to 5 kPa 4.2 to 5.75 kPa
> 50 mbar > 57.5 mbar
> 5 kPa > 5.75 kPa

Checking the rotary damper setting

A
Fig. 12
1. Open the gas shut-off valve.
2. Check the position of the rotary damper with the
burner in idle mode. Rotary damper windows
must be fully opened. Scale ring
damper servomotor must be set to "0", relative to
marking .
C
18
Measure
Do not adjust any settings. Notify your gas supply utility or
LPG supplier.
Please note: The boiler may only be operated temporarily
with this setting (emergency mode).
Notify your gas supply utility or LPG supplier.
Start the boiler.
Install a separate gas pressure governor with zero off up-
stream of the boiler system, and set the pressure to
20 mbar/2 kPa for natural gas, or 50 mbar/5 kPa for LPG.
Notify your gas supply utility or LPG supplier.
B
3. Check control cable
B
on the air 4. Start the burner.
D
(cont.)
0
0
C D
:
A
Connection and kink-free routing
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Fixing and firm seating of retaining clips
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