Model LJ Pool and Spa Heater
Page 27
b. The system's water flow exceeds 125 GPM
(475 LPM), and requires a manual bypass
valve for proper operation. Install a manual by
pass (see Figure 6 on page 10) and proceed to
Section 7.8
15. 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.
Caution
Operation with the temperature rise above
maximum or below the minimum can damage
the heater and may void the warranty.
16. If the temperature rise is within the correct
range, complete the procedure as follows:
a. Set the controller to 'OFF' by repeatedly
depressing the SELECTION 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 at the circuit
breaker.
d. Remove thermometer and Pete's plug.
e. Replace the drain plug.
f. Turn on the power to the filter 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.
7.8. Adjusting the Manual Bypass Valve
After the manual bypass valve is installed, use
the following procedures to adjust the bypass valve:
1.
Make sure the pool filter is clean.
2.
If the filter pump is on, turn it off by pressing the
PUMP key and allow up to five minutes for the
pump to shut down.
3.
Turn off the power supply to the heater at the
circuit breaker panel.
4.
Remove the drain plug located on the inlet/outlet
header of the heater and replace it with a Pete's
plug (see Figure 14).
5.
Insert a pocket thermometer (see Figure 14)
through the Pete's plug into the header.
6.
Turn the circuit breaker on to supply the heater
with power.
7.
Close manual bypass valve.
8.
Set the controller to 'OFF' by repeatedly depress-
ing the SELECTION key until the display shows
that the heater is 'OFF'.
9.
Repeat steps 8 through 13 of the temperature
rise test (see Section 7.7).
10. If the temperature rise is below the minimum
stated in Table 6, open the manual bypass valve
until temperature rise climbs between the min.
and max. range for your size heater. If the
minimum temperature rise stated in Table 6
cannot be reached with the manual bypass fully
open, then the gas supply volume is too low.
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 SELECTION 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 heater at the circuit
breaker.
d. Remove thermometer and Pete's plug.
e. Replace the drain plug.
f. Turn on the power to the heater 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 EN-
TER key. Then use the UP and DOWN keys
to set the heater to the desired temperature.
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.
