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Installation below pool/spa surface:
1. Clean filter thoroughly.
2. Set heater thermostat to highest setting
3. Start filter pump. Make sure all air is out of water
lines and complete system is full of water.
4. Turn filter pump off, adjust pressure switch control.
(See "Water Pressure Switch" on Page 33).
5. Check pressure switch function by turning filter
pump on and off causing heater to respond on or
off. If heater is installed beyond pressure limits, a
flow switch must be installed in water line to
heater.
Heater Installation Below Pool
Figure 40
22
Two speed pump:
In a few cases, the pressure from a two speed
pump is below the one pound minimum required to
operate the heater. This is apparent when the pres-
sure switch cannot be further adjusted. In these
cases the pump must be run at high speed to operate
heater. If the pump and piping arrangement are such
that the required one pound minimum pressure can-
not be obtained, do not attempt to operate the heater.
Correct the installation.
Heater installation, check-out and start-up
should now be completed. BE SURE to leave
Installation, Operation & Service Procedures
Manual with consumer.
Section V. Consumer Operation & Maintenance Procedures
FOR YOUR SAFETY – READ BEFORE OPERATING
General:
Water must be flowing through heater during oper-
ation. Check that the pump is operating and the sys-
tem is filled with water and purged of all air prior to
starting heater. In a new pool it is recommended that
the filter be operated long enough to completely clean
and clear the pool water and filter system.
Balance the pool/spa water chemistry and clean
the filter. Then follow the instructions below.
Pool/Spa water chemistry:
See also Figure 41. The mineral content of swim-
ming pool water increases daily due to addition of
pool sanitizing chemicals and natural evaporation.
Excess minerals will deposit on pool walls, in the fil-
tration system, and in the heat exchanger tubes if the
mineral content is too high.
Changing spa water regularly and maintaining cor-
rect chemical balance in pool/spa will keep the pool/spa
safe and sanitary, and will protect heater and its warran-
ty coverage. Purchase a good "DPD" water test kit and
check the following chemical levels frequently.
CHLORINE OR BROMINE – Recommended level
1 to 4 ppm. Test before use.
pH – Recommended ideal level 7.4 to 7.6. HIGH
readings reduce sanitizer efficiency. LOW readings
are corrosive.
TOTAL ALKALINITY – 80 to 120 ppm. Test week-
ly during regular use. LOW readings are corrosive
and cause rapid pH changes when chemicals are
added.
CALCIUM HARDNESS – 200 to 400 ppm. Test
whenever pool/spa is filled. LOW levels of hardness
can be very corrosive.
Remember, addition of any chemicals can change
levels of chlorine, pH, and total alkalinity.
It is recommended that residential spa water be
changed every 2 to 3 months to prevent water prob-
lems. Public spas may need to have the water
changed every week, or even daily, depending on
bather load.
Using chlorinators and chemical feeders:
Follow the instructions provided with any automatic
or manual chlorinator and chemical feeder. All chemi-
cals must be introduced and diluted into the pool or
spa water before being circulated through the heater.
Do not place chlorine tablets or bromine sticks
directly into the skimmer. High chemical concentra-
tions may result when the pump is not running. High
chemical concentrations will cause very rapid corro-
sion of the heat exchanger. Such damage is not cov-
ered under warranty.
Heater operation:
Full lighting and shutdown instructions are includ-
ed on the lighting instructions label secured to the
back of the front access door. The instruction label is
shown in Figure 42.
WARNING: If you smell gas in the appliance area
or near the floor (PROPANE IS HEAVIER THAN AIR
AND HENCE SETTLES ON THE FLOOR), stop and
follow instructions on the front cover. Since propane
can accumulate in confined areas, extra care should
be taken when lighting propane heaters. It is always a
safe practice to keep your head well away from the
lower firebox opening when lighting the heater.
NOTE: Do not use the unit below 40°F tempera-
ture without adequate temperature protection. Do not
operate heater while an automatic pool cleaner is in
use unless the flow rate has been checked as correct
under operation with the pool cleaner and a dirty filter.
Figure 41
23
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