Viessmann GB-ND 055 E01 30/35 G25 Instrucciones De Montaje página 12

GB
Vitodens 111-W
Replacing the gas solenoid valve
C
B
A
D
1. Disconnect cable from gas solenoid
valve A.
2. Undo the union nut.
12
(cont.)
3. Undo 2 screws B and remove gas
solenoid valve A.
4. Insert new gasket C at new gas
solenoid valve A.
Operation with natural gas:
Insert gasket C without gas
restrictor.
Operation with LPG:
Insert gasket C with the integral
gas restrictor.
5. Mount gas solenoid valve A with
new gaskets D.
Torque for fixing screws B: 6 Nm
Torque for union nut on the gas
connection: 30 Nm
6. Start the boiler and check for leaks.
Danger
Escaping gas leads to a risk
of explosion.
Check gas equipment for
leaks.
!
Please note
The use of leak detection
spray can result in faulty
operation.
Leak detection spray must
not come into contact with
electrical contacts or block
the diaphragm opening on
the gas valve.