Baxi Combi 133 HE Plus Installation & Servicing Instructions Manual page 42

Pressure Gauge
Bracket
Lug
Pressure Gauge
Fig. 57
Capillary
Fig. 58
Pressure Relief Valve
Fig. 59
42
© Baxi Heating UK Limited 2005
Return Pipe
13.0
13.12
1. Drain the boiler (see Section 13.1 paragraph 2 & 3).
2. Undo the nut retaining the capillary in the
connection at the return pipe (Fig. 58).
3. Depress the two lugs on either side of the pressure
gauge and feed through the bracket.
4. Fit new pressure gauge and reassemble in reverse
order.
13.13
1. The pressure relief valve is positioned on the
hydraulic manifold at the back of the pump.
2. Drain the boiler (see Section 13.1 paragraph 2 & 3).
3. Disconnect the union between the valve and the
discharge pipe.
4. Slacken the screw retaining the valve.
5. Pull the valve upwards to disengage it.
6. Fit the new pressure relief valve and reassemble in
reverse order.
Expansion Vessel
removed for clarity
Changing Components
Pressure Gauge (Fig. 57)
Pressure Relief Valve (Fig. 59)