9
INDEPENDENT HEATING :
Any existing or independent method of pool water heating must be installed down stream of the Heatstar unit.
MAXIMUM PRESSURE AT HEATSTAR UNIT :
The maximum working pressure at the Heatstar unit should not exceed 23 PSI.
POOL WATER CIRCULATING PUMP OPERATION :
Effective operation of the Heatstar unit can only take place if the pool water filtration pump is providing an
adequate flow of water to the unit. If the filter pump is not running then the Heatstar unit can not operate.
The pool water filtration pump can be operated on a time clock, as long as the pump is running a sufficient
number of hours per day to enable adequate heating. The number of running hours necessary is constantly
variable but less running time will be necessary during warmer weather.
POOL WATER FLOW THROUGH HEATSTAR UNIT :
The Heatstar unit is fitted with a water pressure sensor which stops the operation of the unit when the pool water
filtration pump is not operating or insufficient pool water pressure is available.
It is possible that the flow of pool water, although inadequate, may not be insufficient enough to trigger the water
flow sensor. It would then be possible for the Heatstar unit to cut-out on
‘SYSTEM CUT-OUT’ and the
corresponding red neon will be lit. If this happens then the water flow should be restored and the Heatstar unit
re-set, refer to 'fault finding'.
HEAD OF WATER :
If a head of water exists above the Heatstar unit, then sensitive adjustment of the internal pressure sensor may
be necessary - please consult Heatstar for further details.
Equally, if a head of water exists, then it is possible to electrically interlock the function of the heat pump with the
operation of the pool filtration pump, see
‘electrical installation’.
However, with this arrangement, the Heatstar unit may over-heat and re-setting of it
’s ‘system cut-out’ trip may
be necessary during the back washing of the pool filter. This is because, although the pool pump is running
during back wash, no water is being delivered to the Heatstar unit.
AIR VENTING OF POOL WATER PIPE WORK :
If the Heatstar unit is positioned at a higher level than the pool water filtration equipment, then a facility for
venting air from the pool pipe work will be required.