Safety Pressure Relief Valve; Heating Pressure Gauge - Baxi EcoBlue Advance Combi 28 Installation And Service Manual

10 Maintenance
'O' ring seal
Discharge Pipe
Fig. 59
Clip
Heating Pressure
Gauge Capillary
Fig. 60
Fig. 61
58 EcoBlue Advance Combi
Grub Screw
Safety Pressure
Relief Valve
Control Box
removed for clarity
Heating
Pressure
Gauge
10.3.14 Safety Pressure Relief Valve (Fig. 59)
1. Close the flow and return isolation taps and drain the primary
circuit.
2. Disconnect the discharge pipework from the valve. Remove
the sealing grommet.
3. Slacken the grub screw securing the pressure relief valve and
remove from the inlet assembly.
4. On reassembly ensure that the 'O' ring is in place and the
sealing grommet is correctly refitted to maintain the integrity of
the case seal.
10.3.15 Heating Pressure Gauge (Figs. 60 & 61)
1. Close the flow and return isolation taps and drain the primary
circuit.
2. Hinge the control box downwards. Remove the clip securing
the pressure gauge capillary to the hydraulic assembly.
3. Disengage the securing tabs and open the terminal block
cover. Prise apart the clips that hold the gauge cap.
4. Remove the gauge, cap and gasket.
5. Fit the new gauge, ensuring that the capillary is routed to
prevent any sharp bends. Locate the ridge on the gauge body in
the slot in the control box.
6. Reassemble in reverse order and ensure the gasket is in
position to maintain the integrity of the case seal.
Comp No. 7212138 - 02 (06/14)