AquaMAX EM50 Series - Manual (Page 28)

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1. Switch off electrical supply to the water heater.
This can be performed at the switchboard or
water heaters isolating switch if one is installed.
2. Remove lower access cover.
3. Turn thermostat temperature adjustment dial
clockwise to increase temperature setting or
anticlockwise to decrease temperature setting.
4. Replace lower access cover.
5. Switch on electrical supply to water heater.
Warning: The power supply to the water he
a
ter must not be switched
on until the water heater is filled with water and a satisfactory megger
reading is obtained.
Over Temperature & Energy Cut Out
The operation of the over temperature and energy cut out on the
thermostat indicates a possibly dangerous situation. If the over temperature
and energy cut out operates, it must not be reset and the water heater must
be serviced by a qualified person.
Commissioning
After installation and before commissioning the water heater the following
pre commissioning procedure must be performed:
1. Check to ensure that all wiring links and electrical connections are
secure and tight.
2. To ensure the over temperature and energy cut out is set, press and
release the black reset button on the thermostat(s) (refer to diagram in
“Thermostat Adjustment” on page 26).
3. Perform a megger (insulation) test on the water heater. If a satisfactory
megger reading is obtained the water heater can be filled and turned
on.
To Fill & Turn ON the Water Heater
Warning: The power supply to the water heater must not be switched
on until the water heater is filled with water and a satisfactory megger
reading is obtained.
1. Open all hot water taps in premises including shower(s).
2. Fully open cold water isolation valve on cold water line to water heater.
This will purge air from hot water plumbing lines via the taps opened in
step 1.