Page 9
Calorex Heat Pumps Ltd. · The Causeway, Maldon, Essex CM9 4XD, UK · Tel: +44 (0)1621 857 171
Installation Manual
PPT8/12/16/22L/LY
R
h. When the pipework installation is complete the pool pump should be
switched on and the system tested for leaks. Also check the filter gauge to
see that there is not an excessive increase in back pressure. If everything is
then working normally the water circulating system is ready for use.
i. Water circuit to and from the unit is to be capable of maintaining within
specified limits the rate of flow required by the heat pump. (See section 10).
j. All pipework must be adequately supported with allowance expansion/
contraction especially with plastic pipework.
k. It is recommended that when installing water systems the last connections
to be made in the system should be breakable connections to avoid any
stresses on the unit connections.
IMPORTANT
1. All Pool Purifying Devices and Chemical Injection Systems to be fitted
down stream of the heat pump unless installation is as per filter dosing
(see figure 4). This includes the 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
3kg/cm
2
(50 psi)
pH
7.2 - 7.8
Total Alkalinity
80 - 120 ppm as CaCO
3
Total Hardness
150 - 250 ppm as CaCO
3
Total dissolved solids
Max 1000 ppm
Saline Water
Max 35,000 ppm
Chlorine - free Cl Range
1.0 - 2.0 ppm Domestic
Chlorine - free Cl Range
3.0 - 6.0 ppm Commercial
Ozone
0.9 Max ppm
Bromine
2 - 5 ppm
Baquacil
25 - 50 ppm
Aquamatic Ionic Purifier
Max 2 ppm Copper
