Diverter Valve Actuator; Overheat Thermostat; Temperature Flow & Return Sensors - Potterton Powermax HE 85 Litre Installation And Servicing Instructions

Temp. Flow Sensor
Flow
Sensor
Manual Air Vent -
Bleed
Manual
Air Vent -
Bleed
Extension
Remove
Electrical
'O'
Connector
Ring
Remove
the
complete
Diverter
Valve
Diverter Valve

Diverter Valve Actuator

Twist the Actuator to the left & pull away
Fig. 23
34
Replacement of Parts

Overheat Thermostat

Electrical
Cable (Red)
Overheat
Thermostat
Temp. Return Sensor
Sensor
Securing
Clips
A
AB
B
Electrical
Cable (White)
Electrical
Cable (Blue)
Return
'O' Rings
Release
Locking
Latch
A
AB
B
4.9 Diverter Valve Actuator
Re-assemble all parts in reverse order.
1. Perform 4.1 General Access.
2. Disconnect the electrical connector at the
actuator.
3. Release the locking catch and twist the
actuator until it unlocks from the valve and
remove from the boiler.
4.10 Overheat Thermostat
Re-assemble all parts in reverse order.
1. Perform 4.1 General Access.
Refer to Fig. 24, Page 35.
2. Disconnect electrical connections and
unscrew the thermostat. Polarity of the
wires is not important.
4.11 Diverter Valve Complete, Manual
Air Vent, Temperature Flow &
Return Sensors
Re-assemble all parts in reverse order.
1. Perform 4.1 General Access.
2. Check that the boiler primary system is
isolated from mains water supply.
3. Release pressure from primary system and
drain down until water level is below the
valve.
Note: A convenient way to check the water
level is to drain all water to the level of the
primary expansion relief valve.
Diverter Valve Complete
Note: The markings on the valve body are
an aid to correct installation (See Fig. 23,
Page 34).
4. Remove the three spring clips from the
connections and remove the valve from the
boiler.
Manual Air Vent
4. Unscrew vent from its mounting.
Temperature Flow & Return Sensors
4. Disconnect the electrical connector and
unscrew the sensor. Sensors are inter-
changable.
5. See Commissioning Instructions, Page 25
for procedure to re-fill and vent the sealed
primary system.
Publication No. 5106226