Description of functioning
t e c h n i c a l
52
Changing the Pump :
- Drain the heating circuit and the domestic
circuit.
- Remove the four Allen screws holding the
pump body to the hydraulic unit, and remo-
ve the pump.
- Remove the pump electrical connection to
the
PCB
.
Changing the drain valve :
- Drain the heating circuit.
- Remove the pump, and remove the clip holding the drain valve in place.
Changing the safety valve and drain valve :
Safety valve or drain valve: 2 and 3.
1. Drain the heating circuit.
2. Remove the clip and pull out the valve.
Changing the DHW thermistor :
Changing the DHW thermistor:
- Drain the DHW circuit.
- Remove the thermistor from its location
and reuse the existing 'O' ring
- DO NOT OVER TIGHTEN THE NEW THERMISTOR.
2
3
GGGGG
46
