Ideal Boilers LOGIC COMBI C24 Installation & Servicing

Also see for LOGIC COMBI C24: User guide

51Installation and ServicingSECTION 3 - SERVICING3.26 DIVERTER VALVE BODY ASSEMBLY REPLACEMENT1. Refer to Section 3.8.2. Drain the boiler. Refer to Section 3.21.3. Remove condensate trap/siphon. Refer to Section 3.18.4. Remove the diverter valve actuator. Refer to Section 3.17.5. Remove the 2 allen screws securing the plate heat exchangerto the composite housings.6. Manoeuvre the plate heat exchanger out of the top LH orcentre of the controls area. Be aware of any water spillage.7. Fit the new plate heat exchanger, using the new o-ringssupplied.Note. Ensure that the depressions are on the bottom prior tofitting.8. Reassemble in reverse order.9. Refill the boiler. Refer to Section 2.16.10. Check that the boiler operates in both DHW & CH modes.3.27 DHW PLATE HEAT EXCH. REPLACEMENT 3.28 PUMP HEAD REPLACEMENT1. Refer to Section 3.8.2. Drain the boiler. Refer to Section 3.21.3. Disconnect the two electrical leads from the pump.4. Remove the 4 allen screws retaining the pump head.5. Remove the pump head.6. Fit the new pump head.7. Reassemble in reverse order.8. Refill the boiler. Refer to Section 2.16.9. Check that the boiler operates in both DHW & CHmodes.34511121413161817To remove the valve body assembly:1. Refer to Section 3.8.2. Drain the boiler. Refer to Section 3.21.3. Remove the condensate trap/siphon. Refer to Section 3.18.4. Remove the electrical plug. Refer to Section 3.17.5. Place a flat bladed screwdriver in the divertervalve motor body slot provided and ease out themotor. Refer to Section 3.17.6. Remove the return thermistor electrical connection. Refer toSection 3.12.7. Remove the pump electrical connections. Refer to Section3.28 no. 3.8. Remove DHW Turbine electrical connection. Refer toSection 3.20 no. 3.9. Remove the DHW plate heat exchanger (note orientation).Refer to Section 3.27.10. Undo the safety valve pipe compression fitting. See No.5Section 3.23.11. Loosen the nut above pump and rotate the pipe.12. If required remove expansion vessel connection hose.Refer to Section 3.32.13. Remove the DHW inlet and CH return connection situatedbeneath the boiler.14. Remove the four torx head screws fixing the returnmanifold to the boiler sheet steel base.15. Lift the manifold assembly and remove from boiler.16. Twist and remove the DHW manifold.17. Remove the two diverter valve body fixing screws andwithdraw the diverter valve body assembly.18. Fit the new diverter valve body assembly and replace thetwo fixing screws.19. Refit the DHW manifold, fit the assembly back to the boilerand reassemble in reverse order.20. Refill the boiler. Check that the boiler operates in both DHW& CH modes.SERVICING