12
MAINS ELECTRICITY SUPPLY
MAXIMUM SUPPLY LOADS :
The table in
‘electrical specifications’ indicates the maximum loadings for each model. Alternatively view the data
plate mounted by the electrical connections.
The Heatstar unit incorporates two motors being the air fan and, largest of all, the refrigeration compressor
motor.
The starting of the motors are off set using time delays to limit the starting electrical load.
The initial load drawn, for a fraction of a second, by each of the motors on starting, will be approximately three
times the normal running Amps.
The normal running amps drawn by the Heatstar unit will vary depending on the fresh air temperature/humidity
conditions and the pool water temperature. This is due to internal working pressures within the system and is
quite normal.
SUPPLY VOLTAGE :
The voltage limits indicated in the Electrical Specifications must not be exceeded.
The correct voltage must be available under the Starting Load Current.
POWER CABLE SIZING :
The Heatstar unit must be connected with the correct cable size.
The cable supplying electricity to a machine with a given electrical load must increase in cross sectional area as
the length increases in order that the voltage drop within the cable does not exceed the recommended limits.
This is a particular consideration where long cable runs are necessary to route electricity through the garden to
the swimming pool.
The motors within the Heatstar unit can be damaged if voltage drop occurs.
Power cables must have a minimum rating of 1.1 x Full Load Current.
The mains cable should be run in Conduit or armoured casing.
EXTERNAL CONTROL AND SWITCH GEAR :
No motor starter, thermal over load or other switch gear should be connected on the mains power supply to the
Heatstar unit.
In order to heat the pool water properly, the Heatstar unit requires a continuous mains power supply, 24 hours
per day. Therefore time clocks etc. should not be installed on the heat pump.
If the operation of the Heatstar unit is required to be limited on a time basis, then a time clock should be fitted to
the pool filtration pump and the Heatstar unit will then function in line with the pool pump.
HIGH VOLTAGE TEST :
Never perform high voltage resistance checks on the wiring without first disconnecting the Heatstar unit from the
circuit being tested.
