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SECTION 3 - SERVICING
3.21 PRESSURE GAUGE REPLACEMENT
1.
Refer to Section 3.8.
2.
Drain the boiler. Refer to Section 3.19.
3.
Pull out and remove the clip (positioned
behind the safety valve) retaining the
safety valve.
4.
Undo the safety valve pipe compression
fitting positioned outside the boiler
casing.
5.
Lift out the safety valve/pipe assembly.
6.
Remove the safety valve pipe and
transfer to the new safety valve.
7.
Reassemble in reverse order ensuring
the retaining clip is correctly fitted and
the pipe compression fitting
retightened.
8.
Refill the boiler with specified
anti-freeze. Check operation of
the boiler.
5
7
4
1.
Refer to Section 3.8.
2.
Drain the heating system. Refer to Section
3.19.
3.
Remove the boiler front (See Section 3.8),
lower the control panel and remove the
control box cover.
4.
Enuring there is no pressure in the system
unclip the C clip from the flow 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 fit connection into port ensuring
‘o’ ring in place and secure with the C clip.
7.
Refill the boiler.
8.
Check that the boiler operates in both DHW &
CH modes.
3.22 SAFETY RELIEF VALVE RENEWAL
