Heatrae Sadia ELECTROMAX SOLAR Installation & Servicing Instructions Manual page 37

4.5 COMMISSIONING - ELECTRICAL
4.5.1 PRELIMINARY CHECKS
1. Ensure all power supplies are switched off.
1. Check all electrical connections are tight.
2. Check all earth bonding links are connected, tight and un-damaged.
3. Check earth continuity, short circuits, polarity and resistance to earth.
4.5.2 IMMERSION HEATER OPERATION
1. Switch on the 240v 16A power supply to the control panel and boost immersion heater.
The information screen on the solar control LCD screen should illuminate.
2. Switch on the hot water switch and press the hot water boost switch. The hot water
switch and hot water boost neon should illuminate and the immersion heater switch on.
NOTE: The boost immersion heater will operate for one hour or until the temperature on
its control thermostat is reached. Switch off the hot water switch to turn off the boost im-
mersion heater.
3. Switch on the off peak 240v 16A power supply to the lower immersion heater.
4. Switch on the hot water switch. The switch should illuminate and the lower immersion
heater operate. NOTE: If connected to an off peak tariff as recommend the lower immer-
sion heater will only operate during off peak times.
5. The set temperature of the immersion heaters can be adjusted by rotating the thermo-
stat controls. Access to the thermostat control is gained by removing the immersion
heater covers. Ensure the power is switched off before removing the immersion heater
covers. It is recommended that both thermostats are set between positions 4 and 5 ( 60
- 65ºC ), however they can be set between 1 and 5 ( 10 - 70ºC). In hard water areas it is
recommended that the maximum temperature is restricted to prevent build up of scale.
FIGURE 22: THERMOSTAT
TEMPERATURE
ADJUSTMENT
LIVE
4.5.3 ELECTRIC BOILER OPERATION
1. Switch on the 240v 45A power supply to the electric boiler.
2. Switch on the central heating switch. The switch should illuminate.
3. Set the flow temp adjustment to minimum position and the programmable room thermo-
stat to be calling for heat (refer to the programmable room thermostat instructions). The
boiler demand indicator will flash green and the pump should run.
3
4 2
5
1 B
A
THERMAL CUT OUT
RESET BUTTON
NEUTRAL
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