Diverter Valve Motor And Diverter Valve Removal; Pump Head; Pressure Gauge - Benchmark 27i System Compact Installation, Commissioning And Servicing Instructions

SERVICE AND SPARES
1.
Fig. 100 Heat exchanger removal

7.8.16 DIVERTER VALVE MOTOR AND DIVERTER VALVE REMOVAL

If the optional integral diverter valve kit has been fitted.
▶ Disconnect the lead from the diverter valve motor.
1. Pull the diverter valve motor from the housing.
2. Undo and remove the two screws from the diverter valve motor
housing.
3. Pull the diverter valve motor housing from the diverter valve
assembly.
When re-fitting the diverter valve motor, ensure that the
motor actuator is correctly connected to the forked lever
on the diverter valve.
1.
2.
Fig. 101 Diverter valve
54
3.
5.
4.
2.
3.

7.8.17 PUMP HEAD

Before removal:
▶ Isolate the electrical power to the boiler.
▶ Drain the system.
▶ There may be water inside the pump.
Protect any electrical items from water ingress.
1. Disconnect the main electrical connector from the bottom of the
pump.
2. Remove the four screws securing the pump head.
3. Pull the pump free from the housing.
▶ Use a screwdriver to gently disconnect the three wire connector from
the bottom of the pump.
▶ Ensure that the pump body is completely dry before fitting the new
pump head, failure to do so may result in damage to the pump.
3.
1.
Fig. 102 Pump head removal

7.8.18 PRESSURE GAUGE

▶ Ensure that the boiler is fully drained.
1. Remove the securing screw and plate.
2. Prise the lugs apart and remove the pressure gauge.
3. Withdraw the spring clip from the pressure sensing head housing.
4. Remove the pressure sensing head and pressure gauge capillary from
the housing.
Fig. 103 Pressure gauge removal
Greenstar i System Compact
2.
4.
3.
1.
2.
ErP - 6 720 813 280 (2015/07)