44
14.0 Changing Components
© Baxi Heating UK Ltd 2007
14.15 Pressure Gauge (Figs. 71 & 72)
1. Drain the primary circuit and undo the nut on the
pressure gauge capillary.
2. Remove the timer cover and ease the timer wiring aside.
Undo the screws securing the gauge retaining bracket.
3. Remove the bracket and gauge assembly. Depress the
barbs on the side of the gauge and remove the retaining
bracket.
4. Reassemble in reverse order.
14.16 Expansion Vessel (Fig. 73)
1. To replace the expansion vessel it is necessary to remove
the boiler from the wall.
NOTE: Alternatively a vessel of equivalent capacity can
be fitted on the system return pipe as close as possible
to the boiler.
2. Drain the system and undo all gas, water and condensate
drain connections. Remove the flue elbow.
3. Lift the boiler off the wall plate and lay it on either side
on a clean flat surface.
4. Undo the nut on the vessel outlet spigot, and remove the
locknut and spring washer securing the spigot to the boiler
chassis.
5. Undo the screws and remove the appliance upper cross
member. Slide the expansion vessel out of the retaining
clips.
6. Reassemble in reverse order. Fully recommission the
appliance and system.
14.17 Condensate Trap (Fig. 74)
1. Disconnect the two sensing wires from the trap
connections.
2. Squeeze together the wire spring clip to release and ease
the inlet pipe from the trap spigot.
3. Undo the nut securing the condensate drain pipe to the
trap. Disconnect the pipe and sealing washer.
4. From underneath the boiler remove the screws securing
the trap bracket.
5. Remove the trap and bracket from the boiler. Undo the
locknut securing the trap to the bracket.
6. Reassemble in reverse order.
Pressure Gauge
Timer Cover
Pressure Gauge
Capillary
Gauge Retaining
Bracket
Expansion Vessel
Retaining Clip
Vessel Outlet Spigot
Boiler Chassis
Lock Nut
Spring
Washer
Fig. 71
Fig. 72
Fig. 73
Upper Cross
Member
Inlet Pipe
Sensing Wires
Condensate
Trap
Wire Spring
Clip
Bracket
Condensate
Drain Pipe
Fig. 74
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