68
pREssURE gAUgE RENEWAL
69
pREssURE RELIEF V ALVE RENEWAL
1. Refer to Frames 45 & 46.
2. Refer to Frame 53.
3. Close the isolating service valves
and drain the (CH) boiler
4. Remove the clip retaining the
pressure sensor
5. Remove the sensor.
6. Remove the electrical cover at the
clips indicated. Refer to Frame 64.
7. Remove the clip retaining the
pressure gauge and remove the
gauge, drawing the capillary carefully
out of the boiler.
8. Ret in reverse sequence. Rell the
CH system. Refer to Frame 67.
9. Check the operation of the boiler.
Refer to Frames 33-36.
1. Refer to Frames 45 & 46.
2. Refer to Frame 53.
3. Close the isolating service valves
and drain the (CH) boiler. Refer to
Frame 67.
4. Remove the burner & Fan assembly.
Refer to Frame 47.
5. Remove the CH Water Pressure
Sensor. Refer to Frame 75
6. Undo the PRV outlet retaining nut.
(retaining the washer)
7. Remove the securing clip at the rear
of the valve body.
8. Withdraw the valve vertically.
9. Renew the valve and ret in reverse
order.
10. Rell the CH system. Refer to
Frame 67.
11. Check the operation of the boiler.
Refer to Frames 33-36.
4
7
5
6
sERVICINg
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