IDEAL LOGIC Combi 24 - DHW Flow Turbine Sensor Replacement; Draining the Boiler; Pressure Gauge Renewal; Central Heating Circuit

44
SERVICING
Ideal Logic Combi - Installation and Servicing
1. Refer to Frame 43.
2. Drain the heating system. Refer to Frame 57.
3. Unscrew the pressure gauge and discard.
4. Fit new pressure gauge, using suitable jointing
compound.
5. Rell the boiler. Refer to Frame 24.
6. Check operation of the boiler. Refer to Frames
32 & 33.
58 PRESSURE GAUGE RENEWAL
57 DRAINING THE BOILER
3G9690
DOMESTIC HOT WATER CIRCUIT
1. Refer to Frame 43.
2. Close all the DHW water isolating valves on the boiler inlet.
3. To drain the domestic hot water circuit: As there is no direct drain for the domestic hot water circuit, depending on the location
of the boiler, opening the lowest hot water tap may drain this circuit. However it must be noted that some residual water will be
experienced during replacement of components.
4. After replacing any component on the boiler, close tap, close the drain valve and open all system isolating valves (re-pressurise
as appropriate by re-connecting the lling loop, refer to Frame 26) before proceeding to check operation of the boiler.
5. Disconnect lling loop. Refer to Frame 24.
6. Check operation of the boiler. Refer to Frames 32 & 33.
204626-9692d
Gas CH
Return
Filling Loop
DHW
Inlet
DHW
Outlet
CH
Circuit
Drain
CH
Flow
CENTRAL HEATING CIRCUIT
1. Refer to Frame 43.
2. Close all the CH water isolating valves on the boiler inlet.
3. To drain the primary heat exchanger circuit: Open the drain
valve and attach a length of hose to the CH drain point.
4. After replacing any component on the boiler, remove the
hose, close the drain valve and open all system isolating
valves (re-pressurise as appropriate by re-connecting the
lling loop, refer to Frame 30) before proceeding to check
operation of the boiler.
5. Disconnect lling loop. Refer to Frame 24.
6. Check operation of the boiler. Refer to Frames 32 & 33.
56 DHW FLOW TURBINE SENSOR REPLACEMENT
1. Refer to Frame 43.
2. Remove condensate trap/siphon. Refer
to Frame 53.
3. Lift off the ow turbine sensor plastic
retaining clip.
4. Unplug the electrical connection and
transfer to new turbine sensor.
5. Reassemble in reverse order.
6. Check operation of the boiler. Refer to
Frames 32 & 33.
3
4
SERVICING