Page 20
POOL PRODUCTS
The proper chemical balance in spa water is
more critical than in a swimming pool heater operation.
Due to the spa's size, high water temperature and
heavy usage, chemical values in a spa can vary
greatly. This chemical imbalance can result in
unsanitary water conditions, and affect the life of the
heater.
Proper chemical balances are necessary for
sanitary bathing conditions as well as ensuring your
heater's long life. Kits are available from your local
pool supply dealer for making the various test for
mineral content. One of these kits will detect copper in
the system. The is usually a warning that corrosion is
taking place, possibly due to a low pH value combined
with other chemistry problems. The condition can be
corrected by changing the spa water and closely
monitoring the pH factor and chemical properties of
the water. Be sure to keep your chemical levels
within the values indicated in Table 4.
Water Pik
does not warrant heat exchangers damaged by
corrosive chemical levels or excess dissolved
solids in pool or spa water.
For spas, it is also necessary to perform water
changes in addition to chemical treatment. It is
recommended to change the spa water every 60 days
for light usage and every 30 days if usage is heavy.
Table 4. Chemical Concentration Levels
Test
Recommended Level
Free Chlorine or
1.0 to 3.0 ppm
Bromine
3.0 to 5.0 ppm
pH
7.2 to 7.6
Total Alkalinity (TA)
80 to 120 ppm
Calcium Hardness (CH)
200 to 400 ppm
Langelier Saturation Index (SI) -0.5 to +0.5
Cyanuric Acid
30 to 150 ppm
Total Dissolved Solids (TDS)
Less than 2000 ppm
Copper
0 ppm
8.2 Seasonal Care
CAUTION
Do not operate this heater outdoors at temperatures
below 32 degrees Fahrenheit (°F) (0 degrees Celsius
[°C]).
8.2.1 Spring and Fall Operation
During periods when the pool is only going to be
used occasionally, set the control temperatures to the
lowest setting possible. See Section 7.3. This prevents
the pool water from becoming chilled, and minimizes
the time required to raise the pool water back up to the
desired temperature.
If the heater is not going to be used for a long
period of time, shut it down completely by turning off
the main switch on the right side of the heater.
8.2.2 Winterizing
The heater could be seriously damaged by
freezing temperatures if it is not properly
drained. Evidence of improper winterizing will
void the warranty
In areas where freezing temperatures occur in
winter and the pool or spa will not be used, have your
service technician perform the following steps:
1.
Turn off the main fuel supply to the heater, using
the shut off valve in the supply line at the storage
tank.
2.
Remove heater door.
3.
Turn off the heater at the main switch on the
right side of the heater. If the heater is on it's
own circuit breaker, it is a good idea to switch
the breaker off.
Figure 20. Heater Drains.