Service manual

5:0 SAFETY CHECK

The safety check must be carried out after every service.

Check:

• That the intake/exhaust hoses and ue are tight and

undamaged.

• That the LPG pipes are tight. Pressure test the system.

• That the 230 V~ earth cable is connected.

• That the safety valve on the water heater is not blocked.

• That the heating system is lled with glycol mixture

up to the mark on the expansion vessel.

Fig 28.

White

Red

Blue

4:10 REPLACING THE PRESSURE SWITCH

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

2. Detach the blue, white and red cables on the pressure

switch.

3. Push back the metal securing plate and pull out the

pressure switch (g. 28 A).

4. Detach the rubber hoses (g. 28 B) from the pressure

switch (do not pull the hoses, unscrew them).

5. Ret the hoses to the new pressure switch before

pushing it into place.

6. Fasten the pressure switch and t the cables to the at-

pin contacts in accordance with g. 28.

7. Fit the cover and end plate to the boiler. Test-start the

boiler.