Viessmann 7827527 Notice De Montage page 8

GB
Application
Gas solenoid valve with 20 V operating
voltage:
■ Vitodens 200, type WB2
■ Vitodens 222, type WS2
Replacing the gas solenoid valve
Note
The new gas solenoid valve is not provided with a gas restrictor. Remove the gas
restrictor from the gas solenoid valve being replaced or from the conversion kit and
install it in the new gas solenoid valve.
8
Gas solenoid valve with 230 V operat-
ing voltage:
■ Vitodens 300, type WB3A
■ Vitodens 333, type WS3A