For Leaks; Perform Combustion Analysis; Check Venting System For Leaks; Measurement) - Viessmann Vitodens 200 Start-Up/Service Instructions

Vitodens 200 WB2 Service
Check all Primary and Secondary Circuit Connections for Leaks

Perform Combustion Analysis

Check Venting System for Leaks (circular air gap measurement)
A Combustion air measuring point
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.
IMPORTANT
A CO measurement (see page 13) 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 80 in this
manual.
Viessmann strongly recommends that the heating
contractor perform a simplified leak test during boiler
start-up. For this purpose it is sufficient to measure
the B concentration of the combustion air in the
coaxial gap of the air intake pipe. The vent pipe is
considered sufficiently leak-proof if a CO
in the combustion air no higher than 0.2% or an O2
concentration no lower than 20.6% is measured.
If higher CO values or lower O2 values are measured,
2
check venting system thoroughly.
Note: The vent pipe adaptor comes with two
measurement ports, one for combustion air-intake
measurement and one for flue gas measurement.
Start-up and Service
concentration
2
15