Viessmann WB1A Series Installation And Service Instructions Manual page 52

Initial Start-up, Inspection and Maintenance
Steps
(continued)
S
Start-up and Maintenance
ervice
S
Start-up and Maintenance
ervice
52
All manuals and user guides at all-guides.com
9. Check all primary and secondary circuit connections for leaks
10. Perform combustion analysis
IMPORTANT
A CO measurement (see page 50) must
be taken before and after working on gas
appliances to eliminate risks to health
and to guarantee the satisfactory condition
of the system.
Record the measured combustion
values in the sequence stated in the
Maintenance Record on page 74 in this
manual.
Check heating system and domestic
hot water connections (if applicable).
Ensure all connections are pressure
tight.
Correct any leaks found on fittings,
pumps, valves, etc.