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4. Electrical Wiring (page 10)
Main service
Grounding and bonding
Circuit breakers
Pro Logic control power
High Voltage pool equipment
Low voltage wiring (temperature sensors, flow
switch, etc.)
General Water Chemistry
Salt is required only if you are using the chlorinator features on the Pro Logic Control. If you are NOT using the
chlorinator, it is recommended that you follow all of the other chemistry recommendations besides salt. Refer to the
description of the Pro Logic configuration menu for information on enabling/disabling the chlorinator (see page 20).
Water Chemistry
The table below summarizes the levels that are recommended by the Association of Pool and Spa Professionals
(APSP). The only special requirements for the Pro Logic are the salt level and stabilizer.
Saturation index
The saturation index (Si) relates to the calcium and alkalinity in the water and is an indicator of the pool water "bal-
ance". Your water is properly balanced if the Si is 0 ±0.2. If the Si is below -0.2, the water is corrosive and plaster
pool walls will be dissolved into the water. If the Si is above +0.2, scaling and staining will occur. Use the chart below
to determine the saturation index.
1. Preparing Pool/Spa Water
Si = pH + Ti + Ci + Ai - 12.1
Calcuim
ºC
ºF
Ti
Hardness
12
.3
53
16
.4
60
19
.5
66
24
.6
76
29
.7
84
34
.8
94
39
.9
103
How to use: Measure pool pH, temperature, calcium hardness,
and total alkalinity. Use the chart above to determine Ti, Ci,and
Ai from your measurements. Insert values of pH, Ti, Ci and Ai
into the above equation. If Si equals .2 or more, scaling and
staining may occur. If Si equals -.2 or less corrosion or irritation
may occur.
CORROSIVE
5. Pro Logic control configuration (page 20)
6. System Startup and checkout (page30)
Total
Ai
Ci
Alkalinity
1.5
1.9
75
75
100
1.6
100
2.0
125
1.7
125
2.1
150
1.8
150
2.2
200
1.9
200
2.3
250
2.0
250
2.4
300
2.1
300
2.5
2.2
2.6
400
400
600
2.4
600
2.8
800
2.5
800
2.9
-.2
0
.2
SCALING
OK
2
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