32
8. OPERATING
INSTRUCTIONS
Before Start-Up
Burners
Keep heater area clear and free from combustibles,
ammable liquids and chemicals. Do not obstruct the ow
of combustion and ventilation air.
Water
Water must be owing through the heater during operation.
Ensure that the system is lled 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 only
electronic ignition. ASME-certied units typically used in
commercial applications, are also available. This manual
provides installation, operation, maintenance, and service
information for these heaters.
TEMP
MODE
ON
LCD DISPLAY
TEMP ADJUST BUTTONS
MODE BUTTON
Figure 60. Heater Control Toggle Switch
If your digital 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 O 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 Figure 60 for
location of toggle switch to turn the heater On and O.
See Section 7 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
WARNING: Should overheating occur or the gas
supply fail to shut o, turn o the manual gas control to
the appliance.
Visual Inspection
Flames can be observed through the opening below the
plenum. Flame color is blue and evenly spread on the top
surface of the burner. At least every three months a visual
inspection should be made of the burners.
Water Pressure Switch
A water pressure switch is provided in the heater to shut
o the burners in the event that water supply is interrupted.
It is very important to verify that the switch electrically
opens and shuts o the gas valve when water ow 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 qualied service person at the
time of installation and periodically checked thereafter.
Refer to "Water Pressure Switch Adjustment" on page
28.
F10671
Figure 61. Water Pressure Switch
A
WARNING: Operation of the heater without water
circulation will cause rapid and severe damage to the
heater. Such damage is not covered under warranty.
Blower Adjustment
This heater is equipped with a combustion air plate (bae)
mounted on the air intake to the combustion air blower.
The bae has a hole that is utilized to control the air inlet
to the blower.
When the combustion air setting is proper, there will be
some lifting of the ames on some areas of the burner
deck under cold-start conditions. After about ve minutes
of operation, the ames should settle down and blue
tips should become visible. Lifting of ames beyond ve
minutes would indicate too much combustion air.
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