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Controls
Spa-Pak spa heaters have integral thermostats and
contactors. They are also equipped with a high tem-
perature limit thermostat which will open the circuit
cutting off power to the heating element in the event of
excessive water temperature. This high limit thermo-
stat is factory set at 140°F. A pressure switch is utilized
to ensure water flow through the heater before the unit
will function.
NOTE: The filter must be kept clean so the flow rate
will be maintained above 15 gpm. Failure to do so
will cause the pressure switch to drop out, and the
heater will become inoperative.
OPERATION
Preliminary
MAKE SURE THAT POWER TO THE UNIT IS OFF.
Remove any tools or other foreign objects from the
inside of the unit. Replace the removable lower panel.
Place temperature control in the off position. Check
tightness of electrical screw terminals.
Filling
Open all valves in the inlet piping and fill the system
with water. Turn on the filter pump and purge all air
from the system. On in-ground spa installations it may
be necessary to prime the pump. Check the unit and
all piping connections for leaks.
Start-up
FILTER PUMP MUST BE ON FOR THE HEATER TO
OPERATE. Turn on the main power to the unit, then
set the temperature control to the desired position and
turn the switch to the "ON" position to place the heater
in operation. Shut pump off and on to be certain that
heater shuts off when pump is off.
A thermal cutout prevents the unit from overheating.
Should overheating occur, the control circuit may be
made operational by depressing the manual reset but-
ton through the grommet on the front panel. This will
be possible only after the unit has cooled down for
several minutes.
IMPORTANT SAFETY
INSTRUCTIONS
CAUTION: Elevated water temperature can be
hazardous.
The U.S. Consumer Product Safety Commission rec-
ommends the following guidelines. When using this
electrical equipment, basic safety precautions should
always be followed, including the following:
1. READ AND FOLLOW ALL INSTRUCTIONS.
2. To reduce the risk of injury:
a. The water in a pool or tub should never
exceed 104°F (40°C). A water temperature in
excess of 104°F is considered unsafe for all
persons. Lower water temperatures are rec-
ommended for extended use (exceeding 10 –
15 minutes) and for young children.
b. Since excessive water temperatures have a
high potential for causing fetal damage during
the early months of pregnancy, pregnant or
possibly pregnant women should limit pool or
tub water temperatures to 100°F (38°C).
c. Before entering a pool or tub, the user should
measure the water temperature at several
occupant locations using an accurate ther-
mometer since the tolerance of water
temperature-regulating devices may vary as
much as ±5°F (±3°C).
d. Alcohol, drugs, or medication should not be
used before or during pool or tub use since
their use may lead to unconsciousness with
the possibility of drowning.
e. Persons suffering from obesity or with a med-
ical history of heart disease, low or high blood
pressure, circulatory system problems, or dia-
betes should consult a physician before using
a pool or tub.
f.
Persons using medication should consult a
physician before using a pool or tub since
some medication may induce drowsiness
while other medication may affect heart rate,
blood pressure, and circulation.
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