Siphon Removal; Primary Sensor (Ch Ntc); Maximum Safety Sensor - Worcester Greenstar Ri Compact ErP Installation, Commissioning And Servicing Instructions

7.8.3

Siphon removal

The Control panel will have to be removed to gain access to the siphon
for cleaning or removal.
Access to the siphon
The Control panel must be removed from the hinges to give enough
access to fit the siphon.
1. Swivel the control panel down to an angle of approximately 60° from
the horizontal.
2. Pull the Control panel up to release the panel from the hinges.
▶ Allow the Control panel to hang on the cables and support strap.
1.
Fig. 70 Control panel removal
1. Disconnect the discharge hose from the siphon.
2. Rotate the siphon body clockwise to release the bayonet connection.
3. Pull the siphon body down and away from the boiler.
3.
1.
Fig. 71 Siphon removal
▶ The control panel can be refitted by holding the panel at
approximately 60° to the horizontal and engaging the panel into the
hinge slots.
Greenstar Ri Compact ErP 6720813282 (2015/07)
2.
2.
7.8.4

Primary sensor (CH NTC)

▶ Remove the combustion air inlet pipe from the pre-mix unit, rotate
anti-clockwise and pull away from the fan assembly.
▶ Ease the gas pipe to the left.
▶ Disconnect the electrical connectors to the sensor.
▶ Remove the sensor by pulling forward.
▶ Replace the sensor onto the flow pipe, ensure that the sensor
element is in contact with the pipe and that the clip is secure.
▶ Connect the lead to the sensor.
▶ Re-fit the combustion air inlet pipe to the pre-mix unit.
Fig. 72 Primary sensor
7.8.5

"Maximum safety sensor"

▶ Disconnect the electrical connectors to the "Maximum safety
sensor".
1. Remove the screw securing the sensor.
2. Remove the sensor from the heat exchanger.
▶ When replacing the sensor, ensure that the assembly is properly
located on the orientation pin.
Fig. 73 Overheat sensor
Service and spares
2.
1.
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