3.0 PLUMBING
a) Calorex Heat Pumps have water inlet/outlet connections as follows:
All models have fittings which enable e heat pump to be connected to eier
1½” or 50mm pipe work.
b) The heat pump is supplied wi bungs fitted in e water connection fittings
These need to be removed before e heat pump is installed. (See section
3.2).
c) The Calorex Heat Pump must be connected aer e filter in e return pipe
to e pool. If an existing heater is being retained, en e Calorex Heat
Pump should be connected between e filter and e oer heater. (See
section 3.1).
d) Suitable breakable couplings should be installed local to e heat pump.
e) If e heat pump is installed at a lower level an e pool en isolation
valves should be fitted.
f) A drain valve or plug should be fitted to e lower pipe to facilitate drain
down in e winter period.
g) Connections on all models are by 1½” or 50mm Female fittings. The water
in/water out pipes need to be glued into ese connections using a
suitable adhesive.
h) The condensate drain at e base of e unit collects condensation from e
evaporator fins. This should run away to waste via ¾” domestic waste
piping. It is erefore necessary to ensure at e Calorex Heat Pump is
placed on a level plin so at e condensate water can run away wi
adequate fall to waste i.e. ½” per foot minimum and must incorporate a “u”
trap as to not overflow e edges of e drip tray inside e heat pump.
See below.
) When e pipework installation is complete e pool pump should be
switched on and e system tested for leaks. Also check e filter gauge to
see at ere is not an excessive increase in back pressure. If everying is
en working normally e water circulating system is ready for use.
j) Water circuit to and from e unit is to be capable of maintaining wiin
specified limits e rate of flow required by e heat pump. (See section 9).
k) All pipework must be adequately supported wi allowance expansion/
contraction especially wi plastic pipework.
l) It is recommended at when installing water systems e last connections
to be made in e system should be breakable connections to avoid any
stresses on e unit connections.
IMPORTANT
1. All Pool Purifying Devices and Chemical Injection Systems to be fitted down
stream of e heat pump (see section 3.1) unless installation is as per filter
dosing. This includes e practice of dosing chemicals direct into skimmer
basket, which results in concentrated corrosive liquids passing over
vulnerable metal components.
2. Water quality must be maintained as follows:
3. Maximum pressure of water in heat pump circuit should not exceed 3.5bar
for PPT16/22 (50 psi).
This type of
installation
should be avoided
Incorrect drainage
for condensate
CORRECT DRAINAGE
FOR CONDENSATE Elbow
'U' trap
Adequate fall
Acidity pH pH 7.2 - 7.8
Total Alkalinity, as CaCO3 ppm 80 - 120
Total Hardness, as CaCO3 ppm 150 - 250
Total Dissolved Solids ppm 1000 Max
Maximum Salt Content ppm 35000 Max
Free Chlorine Range ppm 1 - 2 Domestic
Free Chlorine Range ppm 3 - 6 Commercial
Superchlorination max 30ppm for 24 hrs
Bromine ppm 2 - 5
Baquacil ppm 25 - 50
Ozone ppm 0.9 Max
Maximum Copper Content ppm 1
Aquamatic Ionic Purifier ppm 2 Max
9
SD6381652 ISSUE 4
