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WATER BALANCE MAINTENANCE
The chemical balance of your pool/spa water and the methods used in adding pool chemicals will directly effect
the life of your heater. Like no other precaution you could take, it is very important that these guidelines are
followed in order to prevent damage to the heat exchanger/water coil and possibly the entire system.
Improperly maintained water balance and incorrect introduction of pool chemicals will cause extreme corrosion to
the heat exchanger. If this condition goes unnoticed, it will eventually damage the compressor and evaporator coil.
The heat exchanger in your unit is made of the highest quality cupronickel metal alloy. This makes the heat
exchanger as chemical resistant as possible. The heat exchanger will withstand what is considered normal pool
water balance. Unfortunately, chemical damage is usually diagnosed after the unit has failed because the corrosive
pool/spa water attacks the metal from the inside out.
The following are water balance specifications that are considered standard pool and spa water testing values and
quality. These water balance values are the industry standard in which professional pool contractors follow. Make
sure your pool water is tested and balanced on a weekly basis or more if required. Spas will need extra attention.
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SACRIFICIAL WATER FITTINGS
Alloy Heat
Exchanger
Sacrificial
Water Fittings
Note: The internal 90˚ elbows show in this diagram are de-
signed as a sacrificial fittings to protect the very expensive cu-
pronickel alloy heat exchanger.
These fittings may develop a leak if the pool water balance gets
very acetic or very over chlorinated. If there were no sacrificial
fittings, chemical damage could cause a "breach" from the water
passage to the refrigerant passage. If a" breach" occurs in the
heat exchanger, chlorinated water would be pumped into the re-
frigerant system thus making the heater non-repairable! The sac-
rificial fittings act as an early warning indicator to the user that
the pool water balance is not correct, chemicals are being fed im-
properly (through the skimmer) or the flow rate has been exceeded.
The sacrificial fittings alert the user before "it's too late"
STANDARD POOL WATER
BALANCE REQUIREMENTS
Ph................................7.4 to 7.8
Chlorine/Bromine.......1 to 5 ppm
Total Alkalinity...........90 to 120 ppm
Calcium Hardness......250 to 400 ppm
ADVANCED HEAT EXCHANGER DESIGN
This diagram is a cross section of the heat exchanger. The seam-
less tube within another tube design transfers heat very efficiently.
The inner water tube is made of thicker resilient cupronickel metal
alloy to help resist corrosive pool water. The outer heavy gauge
Freon™ tube is dipped in a special weather proofing material.
Then to insulate from heat loss and help prevent exterior corro-
sion the heat exchanger is encased in a block of special closed cell
foam.
Water Passage
Cupronickel
Metal Alloy
Closed Cell Insulation Foam
Hot
Refrigerant
Passage
Heat Exchanger Cross Section
WARNING
See your local pool dealer for help in properly balancing the water chemistry.
Chemical damage to the unit and / or heat exchanger in any way is not covered under the warranty agreement.