Checking The Adjustment Of The Air Damper Servomotor - Viessmann Vitoflame 100 Service Instructions For Contractors

Commissioning, inspection, maintenance
Further details regarding the individual steps
Service instructions boiler con-
trol unit
1. Check the heating system pres-
sure.

Checking the adjustment of the air damper servomotor

8
(cont.)
2. Open the gas shut off valve.
3. Check the supply pressure (see
page 10).
4. Switch ON the main isolator (out-
side the installation room).
5. Switch ON system ON/OFF switch
B at the control unit.
Press reset button C on the burn-
er, if fault indicator lamp A on the
control unit illuminates.
Note
For the commissioning sequence, see
page 25.
The system can enter a fault state
during commissioning, if insufficient
gas is in the supply line (the fault indi-
cator at the control unit illuminates).
Vent the gas supply line again and
reset the burner control unit.
The burner is equipped with an air
damper servomotor with adjustable
switch cams used to position the air
damper plus a solenoid valve control.
During a controlled shutdown, the
burner air damper moves into the
"closed" position. This reduces the
cool down losses.