36
9. OPERATING
INSTRUCTIONS
Before Start-Up
Burners
Keep heater area clear and free from combustibles,
flammable liquids and chemicals. Do not obstruct the flow
of combustion and ventilation air.
Water
Water must be flowing through the heater during operation.
Ensure that the system is filled with water and that the
pump is operating.
Start-Up Procedures
Your pool/spa heater has been designed for years of safe
and reliable pool/spa water heating. It is available with
millivolt or electronic ignition. ASME-certified units typically
used in commercial applications, are also available. This
manual provides installation, operation, maintenance, and
service information for these heaters.
TEMP
MODE
ON
OFF
LCD DISPLAY
TEMP ADJUST BUTTONS
MODE BUTTON
Figure 68. Heater Control Toggle Switch
If your heater has been installed correctly, operating the
heater is an easy task. The upper front panel of the heater
contains the control center that allows you to turn the
heater On or Off and adjust the temperature settings for
the pool or spa. The temperature range is factory set from
65°F (18°C) to 104°F (40°C). See
for location of
toggle switch to turn the heater On and Off.
See
Section 8
for additional details about the use of the
controls in the Control Adjustments subsection.
After Start-Up
Feel the inlet and outlet pipes. Outlet pipe should be only
slightly warmer than the inlet. It should not be hot.
A
A
WARNING:
Should overheating occur or the gas
supply fail to shut off, turn off the manual gas control to
the appliance.
Visual inspection
With the heater on, remove the door and make a visual
check of the pilot and burner. The flame should be blue
with a well-defined pattern.
A yellow or “floating” flame indicates restricted air openings
or incorrect orifice size. Should this occur, shut the heater
off and contact your installer or gas supplier.
4" MAX
(102 mm)
Figure 69. Main Burner Flame
Figure 70. Millivolt Pilot Burner Flame
Water Pressure Switch
A water pressure switch is provided in the heater to shut off
the burners in the event that water supply is interrupted. It
is very important to verify that the switch electrically opens
and shuts off the gas valve when water flow to the heater
is interrupted. Otherwise rapid and severe damage will
likely occur to the heater.
The water pressure switch should be checked and adjusted
for proper operation by a qualified service person at the
time of installation and periodically checked thereafter.
Refer to
"Water Pressure Switch Adjustment" on page
of this manual.
F10671
Figure 71. Water Pressure Switch
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A
WARNING:
Operation of the heater without water
circulation will cause rapid and severe damage to the
heater, and will void the warranty.
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