5
2. WATER CHEMISTRY
NOTE:
Corrosive water voids all warranties.
Chemical imbalance can cause severe damage to your
heater and associated equipment. Maintain your water
chemistry according to Table A. If the mineral content
and dissolved solids in the water become too high, scale
forms inside the heat exchanger tubes, reducing heater
efficiency and damaging the heater. If the pH drops below
7.2, this will cause corrosion of the heat exchanger and
severely damage the heater. Heat exchanger damage
resulting from chemical imbalance is not covered by
the warranty.
For your health and the protection of your pool equipment,
it is essential that your water be chemically balanced. The
following levels must be used as a guide for balanced
water.
A
A
CAUTION:
Free chlorine must not exceed 5 ppm which
can damage the heater and is not covered under warranty.
• Occasional chemical shock dosing of the pool or
spa water should not damage the heater providing
the water is balanced.
•
Automatic chemical dosing devices and salt
chlorinators are usually more efficient in heated
water, unless controlled, they can lead to excessive
chlorine level which can damage your heater.
• Further advice should be obtained from your pool
or spa builder, accredited pool shop, or chemical
supplier for the correct levels for your water.
2.1. Automatic Chlorinators
and Chemical Feeders
All chemicals must be introduced and completely diluted
into the pool or spa water before being circulated through
the heater. Do not place sanitizing chemicals in the
skimmer. High chemical concentrations will result when
the pump is not running (e.g. overnight).
Chlorinators must feed downstream of the heater and
have an anti-siphoning device to prevent chemical backup
into the heater when the pump is shut off. See Figure 1.
NOTE:
High chemical concentrates from feeders and
chlorinators that are out of adjustment will cause rapid
corrosion to the heat exchanger. Such damage is not
covered under the warranty.
Table A. Pool Water Chemistry
Recommended Level(s)
Fiberglass Pools
Fiberglass Spas
Other Pool and Spa Types
Water Temperature
68-88°F (20-31°C)
89-104°F (31-40°C)
68-104°F (20-40°C)
pH
7.3-7.4
7.3-7.4
7.6-7.8
Total Alkalinity (ppm)
120-150
120-150
80-120
Calcium Hardness (ppm)
200-300
150-200
200-400
Salt (ppm)
4500 Maximum
4500 Maximum
4500 Maximum
Free Chlorine (ppm)*
2-3
2-3
2-3
Total Dissolved Solids (ppm)
3000 Maximum**
3000 Maximum**
3000 Maximum**
*Free Chlorine MUST NOT EXCEED 5 ppm!
**In saltwater chlorinated pools, the total TDS can be as high as 6000 ppm.
RETURN TO SPA
SPA
FILTER
HEATER
AUTO-CHLORINATOR
CHECK VALVE
PUMP
CHECK VALVE
SKIMMER
Figure 1. Spa Chlorinator Setup
Summary of Contents for 106
Page 23: ...23 6 WIRING DIAGRAMS Figure 35 P 106 Heater Wiring Figure 36 P 156 Heater Wiring...
Page 34: ...34 NOTES...
Page 35: ...35 NOTES...
