![Heatrae Sadia ELECTROMAX SOLAR Скачать руководство пользователя страница 59](http://html.mh-extra.com/html/heatrae-sadia/electromax-solar/electromax-solar_installation-and-servicing-instructions-manual_2117669059.webp)
59
8.4 REPLACING THE IMMERSION HEATERS
Drain the domestic hot water cylinder
1.
Remove the immersion heater cover by unscrewing the securing screw.
2.
Disconnect the wiring from the immersion heater thermostat. Remove the thermostat by
3.
carefully pulling outwards from the immersion heaters.
Unscrew immersion heater backnut using the key spanner supplied with the Electromax
4.
Solar. Remove the immersion heater. Over time the immersion heater gasket may become
stuck to the mating surface, to break the seal insert a round bladed screwdriver into one
of the pockets on the immersion heater and gently lever up and down.
Replace the immersion heater. NOTE: The upper and lower immersion heaters are different.
5.
The upper immersion heater is straight and the lower immersion heater is right angled.
Ensure the correct immersion heater is fitted. When fitting a lower immersion heater ensure
it is fitted so the right angle faces down.
Secure the immersion heater in place using the backnut previously removed. It may be
6.
helpful to support the immersion heater using a round bladed screwdriver inserted into one
of the thermostat pockets whilst the backnut is tightened.
Replace the thermostat by carefully plugging the two male spade terminations on the
7.
underside of the thermostat head into the corresponding terminations on the element.
Rewire the immersion heaters in accordance with figure 20, page 33. Refit and secure the
8.
immersion heater covers.
8.5 IMMERSION HEATER THERMOSTATS
Note: The domestic hot water cylinder does not need to be drained to replace the Immersion
heater thermostats.
Remove the immersion heater covers by unscrewing the securing screws.
1.
Disconnect the wiring from the thermostat and remove carefully by pulling outwards from
2.
the immersion heaters.
Replace the thermostat by carefully plugging the two male spade terminations
3.
Rewire the thermostat in accordance with figure 20, page 33. Refit and secure the immersion
4.
heater covers.
8.6 TEMPERATURE AND PRESSURE RELIEF VALVE
Drain the domestic hot water cylinder.
1.
Undo the compression connections connecting the discharge pipework (D1) to the tem-
2.
perature and pressure relief valve and the central heating pressure relief Valve
Unscrew the temperature and pressure relief valve from the domestic hot water cylinder.
3.
Fit the new temperature and pressure relief valve and re connect both parts of the dis-
4.
charge pipework.