Water Chemistry; Automatic Chlorinators; Chemical Feeders - Raypak 106 Installation & Operating Instructions Manual

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 imbal-
ance is not covered by the warranty.
For your health and the protection of your pool equip-
ment, it is essential that your water be chemically
balanced. The following levels must be used as a
guide for balanced water.
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.
Recommended Level(s)
Water Temperature
pH
Total Alkalinity (ppm)
Calcium Hardness (ppm)
Salt (ppm)
Free Chlorine (ppm)*
Total Dissolved Solids
(ppm)
*Free Chlorine MUST NOT EXCEED 5 ppm!
** In salt water chlorinated pools, the total TDS can be as high as 6000 ppm.
Fiberglass Pools
68-88°F (20-31°C)
7.3-7.4
120-150
200-300
4500 Maximum
2-3
3000 Maximum**
Table A: Water Chemistry
5
• Automatic chemical dosing devices and salt chlo-
rinators are usually more efficient in heated water,
unless controlled, they can lead to excessive chlo-
rine 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.
Automatic Chlorinators &

Chemical Feeders

All chemicals must be introduced and completely dilut-
ed into the pool or spa water before being circulated
through the heater. Do not place sanitizing chemi-
cals 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
back-up into the heater when the pump is shut off. See
Fig. 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.
Fiberglass Spas
89-104°F (31-40°C)
7.3-7.4
120-150
150-200
4500 Maximum
2-3
3000 Maximum**
Other Pool and Spa
Types
68-104°F (20-40°C)
7.6-7.8
80-120
200-400
4500 Maximum
2-3
3000 Maximum**