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Water chemistry – Applica 130A Heaters User Manual

Page 2

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WATER CHEMISTRY

NOTE: Corrosive water voids all warranties.

Chemical imbalance can cause severe damage to your

heater and associated equipment. Maintain your water chem-
istry according to Table 1. If the mineral content and dissolved
solids in the water become too high, scale forms inside the
heat exchanger tubes, reducing heater efficiency and damag-
ing the heater. If the pH drops below 7.2, this will cause corro-
sion 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 fol-
lowing levels must be used as a guide for balanced water.

CAUTION

FREE CHLORINE MUST NOT EXCEED 5 PPM WHICH CAN
DAMAGE THE HEATER AND VOID THE WARRANTY.

W

ATER

C

HEMISTRY

T

IPS

• Occasional chemical shock dosing of the pool or spa water

should not damage the heater providing the water is bal-
anced.

• Automatic chemical dosing devices and salt chlorinators

are usually more efficient in heated water, unless con-
trolled, 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.

A

UTOMATIC

C

HLORINATORS

/ C

HEMICAL

F

EEDERS

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 back-up 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.

Page ii

Water Chemistry

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)

6000 MAXIMUM

6000 MAXIMUM

6000 MAXIMUM

Free Chlorine (PPM)*

2 to 3

2 to 3

2 to 3

Total Dissolved Solids (PPM)

3000 MAXIMUM

3000 MAXIMUM

3000 MAXIMUM

Skimmer

Pool

Check Valve

Check Valve

Pump

Filter

Heater

Auto-Chlorinator

Return to Pool

Table 1. Water Chemistry.

Figure 1. Pool/Chlorinator Setup.

*Free Chlorine Must Not Exceed 5 PPM!