Wellis PASRW012, Installation Instructions Manual

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3.INSTALLATION AND CONNECTION
3.2 Spa Heat Pumps Location
The unit will perform well in any outdoor location provided that the following three factors are present
。
1. Fresh Air - 2. Electricity - 3. filter piping
DO NOT place the unit in an enclosed area with a limited air volume, where the units discharge air will
be re-circulated. DO NOT place the unit to shrubs which can block air inlet. These locations deny the
unit of a continuous source of fresh air which reduces it efficiency and may prevent adequate heat
delivery.
3.3 How Close To Your spa?
Normally, the longer the distance from the spa, the greater the heat loss from
the piping. It is recommended to install the heat pump near the spa.
Air inlet
Air outlet
500m
m
6
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.
To Spa
PVC COUPLER
RECOMMENDED (Provided)
From pump
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 liters an hour. The water will run down the fins into the base pan and drain
out through the barbed plastic condensation drain fitting on the side of the base pan. 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 base pan, it is condensation. AN
EVEN QUICKER WAY IS to TEST THE DRAIN WATER FOR CHLORINE - if the is no chlorine
present, then its condensation.