Heat Engine Renewal - IDEAL Esprit eco 24 Installation And Servicing Manual

63 FLOW ThERMIsTOR REpLaCEMENT
1. Refer to Frame 40.
2. Drain down the boiler. Refer to Frame 53.
3. Unplug the electrical lead.
4. Unscrew the thermistor (to facilitate removal a 13mm
socket spanner should be used).
5. Fit the new thermistor using the sealing washer provided.
6. Reassemble in the reverse order.
7. Refill the boiler.
8. Check the operation of the boiler. Refer to Frames 29 & 30.
64 RETURN ThERMIsTOR REpLaCEMENT
1. Refer to Frame 40.
2. Drain the boiler. Refer to frame 53.
3. Unplug the electrical connection.
4. Using a suitable tool, pull out the retaining clip.
5. Carefully pull the thermistor upwards to remove.
6. Fit the new thermistor and re-assemble in reverse order.
7. Refill the boiler.
8. Check the operation of the boiler. Refer to Frames 29 & 30.

65 hEaT ENgINE RENEWaL

1. Refer to Frame 40.
2. Drain the boiler. Refer to Frame 53.
3. Remove the fan / venturi assembly and place on one
side. Refer to Frame 41.
4. Remove burner and place on one side. Refer to Frame 43.
5. Remove the ignition and detection electrodes. Refer to
Frames 44 & 45.
6. Remove the spark generator. Refer to Frame 46.
7. Remove the gas valve. Refer to Frame 47.
8. Remove the expansion vessel. Refer to Frame 66.
9. Remove the flow thermistor. Refer to Frame 63.
10. Remove the 2 M5 screws retaining the gas valve mounting
bracket and transfer bracket to the new heat exchanger.
11. Undo the inlet pipe union nut, swing the pipe and pull
down to remove from heat exchanger.
12. Pull out the flow pipe spring clip, pull the pipe down to
remove from heat exchanger.
13. Remove the condensate rubber pipe from the sump.
14. Remove the two heat exchanger fixing screws.
15. To remove the Heat exchanger slide out of location
bracket.
16. Reassemble in reverse order, ensuring the heat
exchanger LH retaining bracket is correctly positioned.
Replace any new 'o' rings supplied with new heat
exchanger and replacing gaskets or seals if any sign
of damage is evident. When replacing the spring clips
located on the return pipe connection, ensure clip is
oriented to correctly match connecting pipe diameters.
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SERVICING
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Refer also to Frame 5 - 'Boiler Exploded View'
IMpORTaNT - Before starting the removal procedure, protect the
gas and electrical controls with a waterproof sheet or plastic bag.
17. Ensure the trap/siphon is filled with water. Refer to Frame 49.
18. Refill the boiler.
19. Check operation of the boiler. Refer to Frames 29 & 30.
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Esprit eco -
Installation and Servicing
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