Draining The Boiler - IDEAL icos system HE15 Installation And Servicing

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73 DRAINING THE BOILER

1. Refer to Frame 55.
2. Remove the boiler front and bottom panels. Refer to
Frame 47 & 48.
3. Close all the water isolating valves on the piping
frame.
4. Attach a length of hose to the drain point and open
the drain valve.
5. After replacing any component on the boiler,
close the drain valve, remove the hose and open
all system isolating valves, (and re-pressurise as
appropriate) before proceeding to check operation
of the boiler.
6. Check operation of the boiler. Refer to Frame 55.
74 PUMP HEAD REPLACEMENT
1. Refer to Frame 55.
2. Remove the boiler front and bottom panels.
Refer to Frame 47 & 48.
3. Drain the boiler. Refer to Frame 73.
4. Swing the control box down into the servicing
position. Refer to Frame 49.
5. Disconnect the electrical lead from the pump.
6. Remove the 4 Allen screws retaining the pump
head.
7. Remove the pump head.
8. Fit the new pump head.
9. Reassemble in reverse order.
10. Refill the boiler. Refer to Frame 35.
11. Check operation of the boiler. Refer to Frame 55.
50
SERVICING
Drain valve
Drain point
Isolating valves
isolating valve
(shown closed)
TO OPEN
icos system -
Installation and Servicing