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POOL PUMP INTERLOCK
It is possible to switch the operation of the Heatstar unit off electrically in conjunction with the pool water filtration
pump.
Note : this would normally only be connected if the Heatstar unit is positioned at a lower level than the swimming
pool, preventing the pool flow pressure switch within the Heatstar from operating correctly.
Within the Heatstar electrical terminals there are a pair of terminals marked
‘pool pump interlock’.
These terminals are normally bridged by an electrical link.
The left hand terminal of the pair carried a 240v supply on the control circuit and is protected by a 3 Amp fuse.
If this supply is
‘returned’ to the right hand terminal of the pair (i.e. closed circuit), then the Heatstar unit will run
normally. If the supply is not returned (i.e. open circuit), then the Heatstar unit will be prevented from operating.
Therefore, to govern the Heatstar unit, it is possible to connect these terminals to a remote relay which is
switched by the action of the pool filtration pump starter.
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.
CONDENSATE WATER DRAINAGE
Under normal operation the Heatstar unit will produce condensate water at a rate up to 0.5 Litres per minute.
The condensate drain connection is located under the base of the product.
Condensate from the unit should be run to a suitable waste drain via a 22mm pipe.
It is necessary that a U-BEND TRAP be included in the pipe to prevent the suction effect of the fan in the
Heatstar unit from drawing the condensate water back into the unit. The trap should have a drop of at least
50mm.
The drain pipe must be installed to run downhill.
For ease of cleaning and maintenance, it is advised that the drain pipe is push fitted together and not glued.
Equally a short section of transparent pipe would assist is monitoring the condensate flow.
If the drain pipe or drain is positioned outside, care should be taken to ensure that it is not allowed to freeze.
If the Heatstar unit is positioned outside, it is possible to simply allow the condensate water to run out of the pipe
and onto the ground.
However, the use of a u-bend trap is still advised to form an air lock to help prevent the condensate from being
sucked back into the unit by the action of the fan.
It is not advisable to run the condensate water back to the swimming pool due to the possibility of a light oil
present on new components in the Heatstar unit polluting the pool water and staining the draining channel.
Under certain ambient air conditions, a limit amount of water may come from the bottom of the case of the
Heatstar unit.
