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5784 568 - 03
Vitodens 100-W, B1HA series & B1KA Combi Installation/Service
Start-up, Inspection and Maintenance
Measure Static Pressure and Running Pressure
(continued)
WARNING
Ensure that there is no open flame in the room.
WARNING
Never purge a gas line into a combustion chamber.
Never use matches, candles, flame, or other sources
of ignition for purpose of checking leakage. Use a
soap-and-water solution to check for leakage. A failure
to follow this warning could result in fire, explosion,
personal injury, or death.
8
.
All measurements must be made under high-fire
conditions.
Note:
Use suitable measuring instruments calibrated
with a minimum resolution of 0.04 “w.c. for
measuring the running pressure.
9
.
Enter gas type into Maintenance Record on page 85
in this manual.
10
.
Switch off the heating system ON/OFF service switch
(boiler is shut down), close the gas shut-off valve,
remove the manometer and re-tighten the screw in
the test nipple
A
.
11
.
Open gas shutoff valve and check that the test nipple
A
and all gas connections are gas-tight.
Running
supply
pressure
with
Natural gas
Running
supply
pressure with
Liquid propane
gas
Corrective action
under 4
“w.c.
under 10
“w.c.
Do not attempt
adjustment. Call local
gas utility to increase
pressure.
4 to 14
“w.c.
10 to 14
“w.c.
Start up boiler.
over 14
“w.c.
over 14 “w.c. Do not attempt
adjustment. Call local
gas utility to decrease
pressure.
Boiler valve must not be
exposed to pressure over
14 “w.c.
Measure the running pressure; value must be:
