Changing Components - Baxi Combi 130 HE Installation And Servicing Instructions

Heat Exchanger
Manifold
Drain Point
Tube
Fig. 56
Manual Air
Vent
Supplied By www.heating spares.co Tel. 0161 620 6677
Automatic Air
Vent
Sealing Washer
Fig. 57

13.0 Changing Components

13.1 Changing Components
IMPORTANT: When changing components
ensure that both the gas and electrical supplies to
the boiler are isolated before any work is started.
When the boiler control is switched off the control
PCB remains live. Therefore it is important to
isolate the electrical supply. Also for safety,
unplug the boiler at the electrical inlet socket.
Hazardous materials are not used in the
construction of Baxi products, however
reasonable care during service is recommended.
1. Remove the outer case and lower door panel
(see "Fitting the Outercase" Section 11.0).
2. Isolate the water circuit and drain the system
as necessary. There are 5 drain points:
a) Flow Valve
b) Heat Exchanger Manifold
c) Return Valve
d) Cold Water Inlet
e) Hot Water Outlet
NOTE: Do not use the Pressure Relief Valve to
drain the circuit.
NOTE: When reassembling always fit new 'O'
rings, ensuring their correct location on the
spigot. Green "O" rings are used for gas joints
and Black "O" rings for water joints. Use Greasil
4000 (Approved Silicone Grease).
3. After changing a component re-commission the
boiler where appropriate and check the inhibitor
concentration (see Section 6.2 and 10.1).
The air vents, flowswitch, thermistor, safety
thermostat and expansion vessel can be
accessed after removal of the outer case.
13.2 Manual and Automatic Air Vent
(Fig. 57)
1. Drain the boiler.
2. Undo the manual air vent from the flow pipe or
the automatic air vent from the return pipe and
retain the sealing washer.
3. Remove the air vent.
4. Fit the new air vent and reassemble in reverse
order.
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