Heatrae Sadia ELECTROMAX SOLAR Installation & Servicing Instructions Manual page 65

FIGURE 42: CENTRAL HEATING PRIMARY SYSTEM COMPONENTS
AUTOMATIC
AIR VENT
PRESSURE
RELEIF VALVE
COMPRESSION
FITTING
DISCHARGE
PIPE D1
AUTOMATIC
BYPASS VALVE
COMPRESSION
FITTING
8.18 CENTRAL HEATING AUTOMATIC AIR VENT
1. Close the central heating isolation valves and drain the central heating primary circuit.
2. Unscrew the two screws holding the Electromax Solar control panel in place and allow it
to drop forward.
3. Unscrew the automatic air vent from the central heating pump housing.
4. Replace the automatic air vent. Re fit the Electromax Solar control panel.
8.19 CENTRAL HEATING PRESSURE RELIEF VALVE
1. Close the central heating isolation valves and drain the central heating primary circuit.
2. Undo the compression connection connecting the discharge pipework (D1) at the
tundish.
PUSH FIT
ELBOW
ELECTRIC BOILER
MAIN PCB
PCB SCREWS
(X4)
ELECTRIC
BOILER
FILLING LOOP
COMPRESSION
FITTING
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