Spa Heat Pumps Plumbing - Oasis C8b Installation Instructions Manual

3.INSTALLATION AND CONNECTION

3.4 Spa Heat Pumps Plumbing

The Spa Heat Pumps exclusive rated flow titanium heat exchanger requires no special
plumbing arrangements except bypass(please set the flow rate according to the nameplate).
The water pressure drop is less than 10kPa at max. Flow rate. Since there is no residual
heat or flame Temperatures, The unit does not need copper heat sink piping. PVC pipe 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 model have slip glue fittings which accept 40mm NB PVC pipe for connection to
the pool or spa filtration piping. By using a 50 NB to 40NB you can plumb 50NB PVC piping
straight into the unit.
Give serious consideration to adding a quick coupler fitting at the unit inlet and outlet to allow
easy draining of unit for winterizing and to provide easier access should servicing be
required.
Horizontal vision
Condensation: Since the Heat pump cools down the air about 4 -5 , 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 fitting 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 the is no chlorine
present, then it's condensation.
From pump
PVC COUPLER
RECOMMENDED(Provided)
To Spa
8