64
8.16 CENTRAL HEATING EXPANSION VESSEL
Close the central heating isolation valves and drain the central heating primary circuit.
1.
Unscrew the two screws holding the Electromax Solar control panel in place and allow it
2.
to drop forward.
Unscrew the union nut connection between the expansion vessel and the flexible hose
3.
coupling.
Lift the expansion vessel from the moulded support nest. NOTE: the expansion vessel
4.
may contain some water, take care not to spill this into the Electromax Solar.
Fit the new expansion vessel and re connect the flexible hose coupling
5.
8.17 CENTRAL HEATING CIRCULATING PUMP
Close the central heating isolation valves and drain the central heating primary circuit.
1.
Unscrew the two screws holding the Electromax Solar control panel in place and allow it
2.
to drop forward.
Disconnect the pump cable from the pump housing.
3.
Undo the two pump union nuts.
4.
Replace the pump. Re connect the two union nuts and re connect the pump cable. Re fit
5.
the Electromax Solar control panel.
FIGURE 41: CENTRAL HEATING CIRCULATING PUMP
CENTRAL HEATING
EXPANSION VESSEL
CENTRAL HEATING
CIRCULATING PUMP
UNION NUTS (PUMP)
CONTROL PANEL
UNION NUT
(EXPANSION VESSEL)
FLEXIBLE
HOSE
PUMP CABLE
CONNECTION