HeatStar XF EC, Product Manual, Page: 27 / 55

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MAINS ELECTRICITY SUPPLY
MAXIMUM SUPPLY LOADS :
The required electrical specifications are given within the
‘Installation Services’ document supplied with the
product and also on the unit data plate.
The Heatstar incorporates the supply fan motor and the extract fan 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.
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 must be connected with the correct cable size. If the electrical cable size is too small, the voltage
will be restricted and the internal electrical motors could be damaged.
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.
Therefore, give particular consideration to cable size if there is a long cable run.
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.
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. The Heatstar requires a continuous mains power supply, 24 hours per day. Therefore time clocks etc.
should not be installed.
The fan motors within the Heatstar are designed for prolonged continuous operation and regular start / stopping
will reduce their service life.
HIGH VOLTAGE TEST :
Never perform high voltage resistance checks on the mains wiring without first disconnecting the Heatstar from
the circuit being tested.
PHASE ROTATION (3 PHASE MODELS ONLY) :
If the Heatstar is to be run on a Three Phase electricity supply, the direction of phase rotation must be confirmed
to be correct on first connection of the mains supply. This is normally the responsibility of the electrical
contractor. Please note that the fans in the Phoenix EC unit will always rotate the correct way, even if phase
orientation is incorrect.