Checking Static And Supply Pressure - Viessmann VITODENS 300 WB3A Service Instructions Manual

Initial start-up, inspection, maintenance
Further details regarding the individual steps
Ionisation cur-
rent builds
(higher than
5 µA)
Symbol A
Yes
Operational bur-
ner

Checking static and supply pressure

Danger
Higher CO emissions can lead to poisoning.
Measure the CO value before and after any work on gas equipment to
prevent any health hazards and to ensure the perfect operational condi-
tion of the system.
Operation with LPG
Flush the LPG tank twice during commissioning/replacement. Thoroughly vent
the tank and gas lines after flushing.
12
Fault
No
F4
Stops below set
boiler tempera-
ture and restarts
(cont.)
Check electrode
adjustment and
gas pipe for air-
locks
Check flue gas
system for sound-
ness (flue gas
recirculation),
check gas flow
pressure