Service manual

Fig 16.

4:6 REPLACING THE SOLENOID VALVE

For boilers with serial no. from 04445 and upwards.

1. Remove the cover and end plate on the boiler.

2. Unfasten the cables (black, brown and yellow/green) on

the solenoid valve (g. 14 A-C).

3. Using two spanners, slacken the nuts on the incoming

gas pipe (g. 15 A) and the gas pipe to the burner

(g. 15 B), and remove the rubber cap from the soft

start valve (g. 14 D).

4. Extract the solenoid valve (g. 16) and t the new one

by following the instructions in reverse order.

5. Using two spanners, tighten the nut on the incoming gas

pipe to 25-30 Nm, and the gas pipe to the burner to 7-9

Nm. With the boiler operating, check the system and

connections for any leaks using a leak detector spray.

6. Fit the end plate and cover.

For boilers where the solenoid valve is tted to the

burner housing (up to serial no. 04444).

1. Remove the cover and end-plate on the boiler.

2. Unfasten the cables (black, brown and yellow/green) on

the solenoid valve (g. 14 A-C).

Fig 15.

Fig 14.

3. Using two spanners, slacken the nuts on the incoming

gas pipe (g. 15 A) and the gas pipe to the burner (g.

15 B), and remove the rubber cap from the soft start

valve (g. 14 D).

4. Detach the pressure switch hoses to and remove the

insulation next to the burner housing.

5. Unscrew the two plate screws which fasten the gas

valve angle bracket to the burner housing.

6. Extract the solenoid valve and transfer the angle bracket

to the new solenoid valve (attached underneath with a

screw).

7. Fit the new solenoid valve by following the instructions in

reverse order.

8. Using two spanners, tighten the nut on the incoming

gas pipe to 25-30 Nm, and the gas pipe to the burner to

7-9 Nm. Remember to check that the bevels are cor-

rectly tted to the pipes. With the boiler operating, check

the system and connections for any leaks using a leak

detector spray.

9. Fit the end plate and cover.