WATER CHEMISTRY
(Corrosive water voids all warranties)
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 bal-
anced water.
Recommended Level(s)
Fiberglass Pools Fiberglass Spas
Other Pool & Spa
Types
Water Temp. (Deg. F)
68 to 88
89 to 104
68 to 104
pH
7.3 to 7.4
7.3 to 7.4
7.6 to 7.8
Total Alkalinity (PPM)
120 to 150
120 to 150
80 to 120
Calcium Hardness (PPM)
200 to 300
150 to 200
200 to 400
Salt (PPM)
4500 MAXIMUM
4500 MAXIMUM
4500 MAXIMUM
Free Chlorine (PPM)*
2 to 3
2 to 3
2 to 3
Total Dissolved Solids (PPM)
3000 MAXIMUM** 3000 MAXIMUM** 3000 MAXIMUM**
* Free Chlorine MUST NOT EXCEED 5 PPM!
• 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, and which is not covered under warranty
. A check
valve should be installed between the heater outlet and a chlorinator or other chem-
ical dosing device.
• 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
Rev. 29
reflects the following:
Changes to:
Additions:
None
Deletions:
None
** In salt water chlorinated pools, the total TDS can be as high as 6000 ppm.
Summary of Contents for 336A
Page 28: ...28 WIRING DIAGRAM MILLIVOLT MECHANICAL THERMOSTAT...
Page 29: ...29 WIRING DIAGRAM ATMOSPHERIC...
Page 30: ...30 WIRING DIAGRAM LO NOx...
Page 48: ...48 19 M 20 M 22 M 24 M 23 M 21 M 22 M ATMOSPHERIC HEATERS...
Page 49: ...49 16 M 17 M 19 M 21 M 20 M 18 M 19 M LO NOx HEATERS...
Page 50: ...50...
Page 52: ...52 ATMOSPHERIC HEATERS...
Page 53: ...53 ATMOSPHERIC HEATERS...
Page 54: ...54 LO NOx HEATERS...
Page 55: ...55 LO NOx HEATERS...