Safety Relief Valve Renewal; Pump Automatic Air Vent Replacement; Dhw Flow Turbine Cartridge Replacement - IDEAL LOGIC Combi 24 Installation And Servicing

59 saFETy RELIEF VaLVE RENEWaL

1. Refer to Frame 43.
2. Drain the boiler. Refer to Frame 57.
3. Remove the condensate trap/siphon. Refer to Frame 53.
4. Remove expansion vessel. Refer to Frame 69.
5. Disconnect the electrical connection from the return
thermistor.
6. Disconnect the 22mm pipe connection at the rear of the
pump outlet.
7. Pull off the clip retaining the pipe to the heat exchanger
swing the pipe to clear the pump and remove pipe.
8. Undo the safety valve union connection.
9. Withdraw the clip securing the safety valve.
10. Lift safety valve from boiler.
11. Fit the new safety valve and reassemble in reverse order
ensuring the new 'o' ring is fitted to the top of the return pipe.
12. Refill boiler. Refer to Frame 24. Check operation of boiler.
Refer to Frames 32 & 33.

60 PUMP aUTOMaTIC aIR VENT REPLaCEMENT

1. Refer to Frame 43.
2. Drain the boiler. Refer to Frame 57.
3. Remove the expansion vessel. Refer to Frame 69.
4. Firstly, increase access area by disconnecting the 22mm pipe connection at
top of pump chamber and bottom of heat exchanger and remove pipe Refer to
Frame 59 (no's 5,6 & 7).
5. The automatic air vent head is retained in the pump body with a bayonet
connection. The air vent head and float assembly is removed by turning the
head anti-clockwise (viewed from above) and pulling upwards.
6. Reassembly is the reverse of the above. Ensure the air vent head 'o' ring seal
is in place when refitting and the new 'o' ring is fitted to the return pipe top
connection.
7. Ensure the air vent cap is loose.
8. Refill the boiler. Refer to Frame 24. Check for leaks around the new air vent
joint.
9. Check the operation of the boiler. Refer to Frames 32 & 33.

61 DhW FLOW TURBINE CaRTRIDgE REPLaCEMENT

1. Refer to Frame 43.
2. Drain the boiler. Refer to Frame 57.
3. Remove condensate trap/siphon. Refer to
Frame 53.
4. Remove the DHW flow turbine sensor. Refer to
Frame 56.
5. Unscrew the top connection to access the
internal part.
6. Fit the new turbine cartridge.
7. Refit the turbine flow sensor
8. Reassemble in reverse order.
9. Refill the boiler. Refer to Frame 24.
10. Check operation of the boiler. Refer to
Frames 32 & 33.
Ideal Logic Combi -
Installation and Servicing
SERVICING
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10
5
7
5
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Dust Cap
4
5
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