Hayward POWERLINE 15-81500, Installation Instructions Manual

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6
3. INSTALLATION AND CONNECTION
3.4 Swimming Pool Heat Pumps: Plumbing
The Swimming Pool Heat Pumps exclusive rated flow titanium heat exchanger requires
no special plumbing except bypass (please set the flow rate according to the
nameplate). The water pressure drop is less than 10kPa at maximum flow rate. Since
there are no residual heat or flame temperatures, the unit does not need copper heat
sink piping. PVC pipes can be run straight into the unit.
Location: connect the unit in the pool pump discharge (return) line downstream of all
filter and pool pumps, and upstream of any chlorinators, ozonators or chemical pumps.
Standard models have slip glue fittings which accept 40mm NB PVC pipes for
connection to the pool or spa filtration piping. By using 50NB to 40NB, you can plumb
50NB PVC piping straight into the unit.
Consider adding a quick coupler fitting at the unit inlet and outlet to allow easy draining
of the unit for winterizing and to provide easier access should servicing be required.
Condensation: since the heat pump cools the air down about 4-5°C, water may
condense on the fins of the horseshoe shaped evaporator. If the relative humidity is
very high, this could be as much as several litres an hour. The water will run down the
fins into the basepan and drain out through the barbed plastic condensation drain fitted
on the side of the basepan. This fitting is designed to accept 3/4" clear vinyl tubing
which can be pushed on by hand and run to a suitable drain. It is easy to mistake the
condensation for a water leak inside the unit.
NB: a quick way to verify that the water is condensation is to shut off the unit
and keep the pool pump running. If the water stops running out of the basepan,
it is condensation. AN EVEN QUICKER WAY IS TO TEST THE DRAIN WATER FOR
CHLORINE - if there is no chlorine present, then it's condensation .
From pump
PVC COUPLER
RECOMMENDED (Provided)
Horizontal view
To pool