Pool/Spa Heater - Additional Information
Application Notes For Commercial Pool Heating
Heat
Loss
About 50% of all the energy
lost from a pool is from the surface of the water. If the pool is enclosed
or uses a thermal pool cover / blanket then the size and cost of the pool
heater, as well its running costs will be reduced. The higher the
temperature that the pool water has to be heated to, the greater is the
rate at which heat energy is needed to heat the pool water. This will mean
higher operating costs.
Pool Heater in more detail
Advanced heta-pump technology provides an extremely efficient method
of heating a swimming pool. It combines the direct energy
gain of an air-sourced evaporator with the constant heat acquirement
of a high performance compressor.
The main
components of the heat pump pool heating system are:-
- High efficiency heat exchanger (as hot side condenser)
- Air sourced fin coil (as evaporator)
- A thermostatic expansion valve
- An efficient scroll compressor
The heat exchanger is made with a Copper-Nickel alloy suitable for
chlorinated pool water or Titanium for extended life.
Operation
There is a pressure switch installed which detects water pressure
through the heat exchanger. The Digital Controllers built
in time delay at start will commence once water pressure has
been detected. The time delay is set at 15 minutes and operation
will only begin after the time delay period has completed.
.
The time delay is also activated when any protection switch restarts
the system, including the Digital Controller. The unit will be turned on
or off by the Digital Controller, as part of normal operation, in
accordance with the water temperature and set point of the Digital
Controller. When the Digital Controller, sensing a low water temperature,
calls for the unit to restart, the time delay will again be activated and
the compressor will not begin operation until completion of the time delay
period.
Within 5 minutes of operation, the system will stabilise and
it should be possible to observe a temperature difference between the
water inlet and outlet of approximately 4° C to 6° C.
Temperature Control
The desired water
temperature can be easily set and monitored from the built-in temperature
control panel. During operation, the temperature display will indicate the
actual water temperature.
Electrical Connections
Our commercial sized pool heaters are designed for 3 phase 415V AC supply only.
A circuit breaker must be installed at the power supply and
the electrical connection must comply with Local Supply Authority
Regulations and relevant Australian Standards. It will require
an approved On / Off switch in close proximity to the
heater.
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