Checking The Co 2 Settings - Viessmann VITODENS 300 WB3A Service Instructions Manual

Initial start-up, inspection, maintenance
Further details regarding the individual steps
Supply (flow)
pressure for nat-
ural gas
Below 17.4 mbar
17.4 to 57.5 mbar
Above 57.5 mbar
Checking the CO
Vitodens 300 is factory-set for natural gas E or LPG P. The natural gas E version
can be converted to natural gas LL using a conversion kit. The LPG P version
can be converted to natural gas E or LL using a conversion kit.
During commissioning or maintenance, check the CO
tor.
Note
The MatriX burner for Vitodens 300 is preset for the entire gas group. Therefore,
the burner requires no further setting or adjustment.
Subject to the Wobbe index, the CO
14
Supply (flow)
pressure for
LPG
Below 42.5 mbar
42.5 to
57.5 mbar
Above 57.5 mbar Install a separate gas governor down-
settings
2
2
Remedy
Do not start up. Notify your mains gas or
LPG supplier.
Start up boiler.
stream of the system and regulate the
pressure to 20 mbar for natural gas or
50 mbar for LPG.Notify your mains gas
or LPG supplier.
7. Shut down the boiler, close the gas
shut-off valve, remove the pressure
gauge, and close test nipple A
with the screw.
8. Open the gas shut-off valve and
start the boiler.
Danger
Gas escaping from the test
nipple leads to a risk of
explosion.
Check test nipple A for
soundness.
2
content fluctuates between
(cont.)
level at the boiler adap-