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COLD WEATHER OPERATION
MODERATE CLIMATE: Heater operation can con-
tinue during short term cold spells. When tempera-
tures are below freezing, flow (continuous pump op-
eration) must be maintained.
CAUTION: Do not use the heater to maintain water
temperatures just above freezing or for freeze protec-
tion. When heaters are used during freezing weather
care must be taken to avoid freeze ups. Continuous
pump operation is a must. Additional protection may
be required. The heater is not warranted against
freeze ups.
COLD CLIMATE: Prolonged operation with water
temperatures below 50°F is not recommended. When
starting the heater with pool temperatures below 50°F,
operate the heater continuously until higher tempera-
tures are reached. Operating the heater for prolonged
periods with pool water below 50° can seriously dam-
age the heater, and is not covered by the warranty.
For cold climate areas please follow the winterizing
procedures listed below.
WINTERIZING THE SPA HEATER
When heaters installed outdoors in freezing cli-
mate areas are to be shut down for the winter, observe
the following step-by-step procedure:
1. Turn off gas valve, manual gas valve, and
electrical supply to the heater.
2. Open drain cock located on the inlet/outlet
header, (under water pipes). Remove
drain changer inspection panels on the side
opposite water piping to gain access to the
plug on the return header.
4. Make visual check of the burner and pilot flame.
Flame pattern on the main burner and pilot is
indicated in the previous illustration. Yellow
flame means restriction of the air openings.
Lifting or blowing flame indicates high gas
pressure. Low flame means low gas pressure.
Should this occur, shut the heater off and
contact your gas supplier or qualified service
agency.
5. On indoor heaters, clean room intake openings
to assure adequate flow of combustion and
ventilation air.
CAUTION:
Combustion air must not be contaminated
corrosive chemical fumes which can damage the
heater.
6. Keep area around heater clear and free from
combustible materials and other flammable and
corrosive vapors and liquids.
BASIC TIPS IF HEATER WILL NOT FIRE:
1. If you have no electrical power; it may be your
"circuit breakers" have tripped. Try re-setting
them.
2. if you have electrical power but the heater will
not fire
check the following:
3. The time clock must be moved to the "ON"
position.
4. Your pump strainer basket may be full. If so
remove debris.
5. your filter may be dirty. If so, backwash or
clean filter.
(To tell if your filter is dirty, the gauge pressure
will be higher than usual).
6. The pump amy have lost it's prime. It may be
running dry, check the pressure gauge on the
filter. If there is no pressure; then you are not
moving water (or your gauge is broken). Try to
get the pump to run at it's normal flow rate.
POOL & SPA WATER CHEMISTRY
Chemical imbalance can cause severe damage to
your heater and associated equipment. Maintain your
water pH between 7.4 and 7.8 and total alkalinity
between 100 and 150 p.p.m. If the mineral content and
dissolved solids in the water become too high, scale
forms inside the heat exchanger tubes, reducing
heater efficiency and also damaging the heater. If the
pH drops below 7.2, the heater will be severely dam-
aged. This will result in corrosion of the heat ex-
changer. Heat exchanger damage resulting from
chemical imbalance is not covered by the war-
ranty.
6
Fig. # 9249
DRAIN COCK IN/OUT
HEADER