Measuring The Static Pressure And Supply Pressure - Viessmann Vitotwin 300-W Installation And Service Instructions For Contractors

Commissioning, inspection, maintenance
Further details regarding the individual steps

Measuring the static pressure and supply pressure

Danger
CO build-up as a result of incor-
rect burner adjustment can have
serious health implications.
A
1. Close the gas shut-off valve.
2. Undo the screw inside test nipple
A (IN) on the gas train, but never
remove, and connect the pressure
gauge.
3. Open the gas shut-off valve.
68
(cont.)
A CO test must be performed
before and after work on gas
appliances.
4. Check the static pressure and record
the value in the report on page 184.
Set value: max. 25 mbar.
5. Start the boiler.