23
Classic RS -
Installation & Servicing
SERVICING
REPLACEMENT OF PARTS
1. Refer to Frame 36.
2. Unfasten the 2 nuts and washers holding the
sightglass assembly to the casing front panel.
3. When fixing the new assembly, ensure that the
parts are in the correct order. The frame MUST
have the return edge at the bottom.
4. Retighten the 2 nuts to ensure an airtight
seal. Do NOT overtighten.
5. Replace the boiler casing. Refer to Frame 26.
When replacing any component:
1. Isolate the electricity supply.
2. Turn off the gas supply at the boiler.
3. Remove the boiler casing . Refer to Frame 30.
IMPORTANT. When work is complete the casing MUST be
correctly refitted - ensuring that a good seal is made.
37 SIGHTGLASS REPLACEMENT
36 GENERAL
Note.
In order to assist fault finding, the control box printed
circuit board is fitted with 2 indicator lights which represent the
following boiler conditions:
Neon
I
3.
Mains electricity ON.
Neon SG1. Flashes to indicate ignition operation (stops after
detection).
The boiler MUST NOT be operated if the casing is not fitted.
1. Refer to Frames 36 & 52.
2. Remove the control box securing screws.
3. Pull the box forward and downward to disengage
38 OVERHEAT THERMOSTAT REPLACEMENT (if fitted)
4. To remove the overheat thermostat, pull off the electrical
connections at the thermostat. Remove the backnut retaining
the thermostat to the bracket. Remove the thermostat from the
heat exchanger pocket.
5. Fit the new thermostat and reassemble in reverse order.
6. Check the operation of the boiler.
CL
2113
SER
VICING
