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Installation and Servicing
SECTION 3 - SERVICING
3.24 SAFETY RELIEF VALVE RENEWAL
1. Refer to Section 3.8.
2. Drain the heating system. Refer to Section
3.22.
3. Remove the boiler front (See Section 3.2),
lower the control panel and remove the
control box cover.
4. Ensuring there is no pressure in the system
unclip the C clip from the ow manifold port
and remove the capillary connection together
with ‘o’ ring.
5. Releasing the two retaining clips on the
pressure gauge ease the pressure gauge
through the front of the control panel.
6. Fit the new pressure gauge from the front of
the control panel ensuring correct orientation.
Locate push t connection into port ensuring
‘o’ ring in place and secure with the C clip.
7. Rell the boiler. Refer to Section 2.16.
8. Check that the boiler operates in both DHW &
CH modes.
3.23 PRESSURE GAUGE REPLACEMENT
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1. Refer to Section 3.8.
2. Drain the boiler. Refer to Section 3.22.
3. Remove the clip on return thermistor. Refer to Section 3.12.
4. Pull out and remove the clip (positioned behind the safety
valve) retaining the safety valve.
5. Undo the safety valve pipe compression tting positioned
outside the boiler casing.
6. Lift out the safety valve/pipe assembly.
7. Remove the safety valve pipe and transfer to the new safety
valve.
8. Reassemble in reverse order ensuring the retaining clip is
correctly tted, the pipe compression tting retightened and
return thermistor is re-clipped.
9. Rell the boiler. Check that the boiler operates in both DHW
& CH modes.
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SERVICING
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