Checking The Static And Supply Pressure - Viessmann Vitogas 100 Service Instructions Manual

Initial start-up, inspection, maintenance
Further details regarding the individual steps

Checking the static and supply pressure

Danger
CO build up as a result of an incorrect burner setup can have serious
health implications.
Carry out a CO test prior to, and after, work on gas equipment.
Operation with LPG
Flush the LPG tank twice during commissioning/replacement. Thoroughly vent
the tank and gas lines after flushing.
A Test connector
1. Close the gas shut off valve.
2. Remove the screw inside test
connector A at the gas combina-
tion valve and connect the pres-
sure gauge.
3. Open the gas shut off valve.
8
(cont.)
4. Check the static pressure:
Natural gas: max. 25 mbar
LPG: max. 57.5 mbar
Record the actual value in the
service report on page 32.
5. Start the boiler.
Note
During commissioning, the boiler
can (several times) enter a fault
state because of airlocks in the
gas pipe. Press the reset button
on the burner control unit after
approx. 10 seconds.
6. Check the supply (flow) pressure:
Natural gas: 17.4 to 25 mbar
LPG: 42.5 to 57.5 mbar (at
50 mbar inlet pressure)
Record the actual value in the
service report on page 32.
Note
Use suitable test equipment with
a resolution of at least 0.1 mbar to
test the supply pressure.