Model LJ Pool and Spa Heater
Page 31
11. If the temperature rise is above the maximum,
there is not enough water flowing through the
heater. Check for clogging in the water filter or
restriction in the water pipes.
12. Once the temperature is within the correct range,
safety wire the handle of the manual bypass
valve in place and tag the valve to prevent
change in the water flow.
13. Complete the procedure as follows:
a. Set the controller to 'OFF' by repeatedly
depressing the SELECT key until the display
shows that the heater is 'OFF'.
b. Turn the filter pump off by pressing the
PUMP key and allow up to five minutes for
the pump to shut down.
c. Turn off the power to the filter pump at the
circuit breaker.
d. Remove thermometer and Pete's plug.
e. Replace the drain plug.
f. Turn on the power to the filter pump at the
circuit breaker.
g. Return the pool temperature control to the
desired temperature. Repeatedly depress the
MODE key until the indicator at the top of the
display shows 'POOL SET'. Press the
ENTER key. Then use the UP and DOWN
keys to set the heater to the desired tempera-
ture. Press the ENTER key again.
SECTION 8.
Maintenance
8.1 Water Chemistry
Proper chemical balances are necessary for
sanitary bathing conditions as well as ensuring your
heater's long life. Be sure to keep your chemical levels
within the values indicated in Table 8.
Jandy Pool Products, Inc. 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 recom-
mended to change the spa water every 60 days for
light usage and every 30 days if usage is heavy.
8.2 Seasonal Care
CAUTION
Do not operate this heater outdoors at
temperatures below 20 degrees Fahrenheit (°F)
(-7 degrees Celsius [°C]).
ATTENTION
Ne faites pas fonctionner cet appareil à
l’extérieur à des températures inférieures à 20
degrés Fahrenheit (
o
F) (-7 degrés Celsius
[
o
C]).
8.2.1 Spring and Fall Operation
During periods when the pool is only going to be
used occasionally, set the pool and spa control tem-
peratures to 70°F (21°C) (see Section 7.2.3). This
prevents the pool water from becoming chilled, and
minimizes the time required to raise the pool water
back up to the desired temperature.
In areas subject to only short freeze periods, turn
off the heater. The Freeze control function of the
heater will start the pump when the water temperature
falls to the 'FREEZE SET' temperature (see Section
7.2.4). (The freeze protection will only operate if the
internal relay is controlling the filter pump.) The pump
will run continuously until the water temperature has
risen to 2° above the 'FREEZE SET' temperature.
If the heater is not going to be used for a long
period of time, shut it down completely. Follow the
instructions found on the inside of the heater, or page
25 of this manual.
8.2.2 Winterizing
In areas where freezing temperatures occur in
winter, and the pool or spa will not be used, have your
Table 8. Mineral Concentration Levels
Test Recommended Level
Free Chlorine or 1.0 to 3.0 ppm (3.0 to 5.0 spa)
Bromine 2.0 to 4.0 ppm (3.0 to 5.0 spa)
pH 7.4 to 7.6
Total Alkalinity (TA) 80 to 120 ppm
Calcium Hardness (CH) 200 to 400 ppm
Cyanuric Acid 30 to 50 ppm
Total Dissolved Solids (TDS) Less than 2000 ppm
Copper 0 ppm
* Concentration levels taken from “Basic Pool and Spa
Technology” published by NSPI (National Spa and Pool Institute).
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