Draining The Boiler - IDEAL HE24 Installation And Servicing

72 DRAINING THE BOILER

1. Refer to frame 52
2. Close all the water isolating (CH and DHW) valves
on the boiler inlet.
3. To drain the central heating circuit:
a. Attach a length of hose to the drain point and
open the drain valve.
4. 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.
5. After replacing any component on the boiler,
close the drain valve, remove the hose and open
all system isolating valves (re-pressurise as
appropriate with filling loop provided) before
proceeding to check operation of the boiler.
6. Check operation of the boiler. Refer to Frame 52.
73 DIVERTER VALVE INTERNAL PARTS REPLACEMENT
1. Refer to Frame 52.
2. Swing the control box down into the servicing position. Refer
to Frame 46.
3. Drain the boiler. Refer to Frame 72.
4. Remove the diverter valve actuator head. Refer to Frame 62.
5. Remove the water pressure switch. Refer to Frame 77.
6. Remove flow pipe union nut.
7. Unscrew the pressure gauge connection.
8. Remove the allen screw retaining the divertor brass
housing.
6
7
52
SERVICING
CH Flow
isolation
valve
4
10
DHW inlet
isolation
valve
9. Remove the two union connections to the CH flow and
the DHW flow at the underside of the boiler.
10. Lift the divertor brass housing and remove.
11. Unscrew the top and bottom connections to access the
internal parts.
12. Fit the new valve mechanisms ensuring the correct fit of
the pin.
13. Reassemble in reverse order.
14. Refill the boiler. Refer to Frame 32.
15. Check operation of the boiler. Refer to
Frame 52.
11
12
12
5
11
CH Return
isolation
valve
Drain
Drain
valve
point
8
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