Ideal Boilers mini HE C24 Installation And Servicing

SERVICINGmini HE --- Installation & Servicing 4565 DIVERTER VALVE INTERNAL PARTSREPLACEMENT1 Disconnect the electrical supply.2 Remove front and left hand casing panels (refer to frame34).3 Close the isolating cocks of the CH circuit and DHWsupply at the bottom of the boiler.4 Release system pressure by opening the main circuitdrainage cock.Do not release CH pressure using the pressure reliefvalve. It may cause debris within the system to foulthe valve.5 Release the pressure of the DHW circuit by opening a hottap.6 Remove the diverter valve actuator (see frame 64).7 Remove the fork D and remove the primary circuit flowswitch E.8 Disconnect both CH and DHW thermistors F.9 Unscrew the connector G, disconnect the CH flow andDHW outlet isolator valves.DEGF F10 Remove the DHW heat exchanger (see frame 63).11 Remove the fork H and move away the pipe I.12 Unscrew the screw J and remove the diverter (flow)group.HIJ(rear view)13 Refer to the following exploded view to remove theinternal parts of the three way diverter valve.14 Re---assemble in reverse order.66 PROGRAMMER REPLACEMENT(if fitted)1 Disconnect the electrical supply.2 Gain access to the main control p.c.b. (steps 1 to 4 offrame 55).3 Disconnect the wiring at the programmer.4 Squeeze the hooks that hold the programmer on thecontrol panel fascia and withdraw the faulty programmer.5 Re---assemble in reverse order.When reassembling the new programmer, refer to the wiringdiagram in frame 23 for the correct wiring connection.6 Replace the panels and check the operation of the newprogrammer.SERVICING