16
P/N 38033 Rev. C 12-1-00
It is recommended that you check the following at least every six months and at the beginning
of every swimming season.
5. Check wire ends and wire connections. They
should be clean and tight.
6. Check the gas pressure as described in this
manual.
7. To protect controls and cabinet finish, periodi-
cally spray with penetrating oil and wipe off.
Spray with the heater “OFF”; Oil is “Flammable”.
CAUTION
Spring and Autumn Operation
If the pool is being used occasionally, do not turn
the heater completely off. Set the thermostat down
to 65
o
F. This will keep the pool and the surrounding
ground warm enough to bring the pool up to a
comfortable swimming temperature in a shorter
period of time.
Winter Operation
If the pool won't be used for a month or more, turn
the heater off at the main gas valve. Where freezing is
possible, it is necessary to drain the water from the
heater. This may be done by opening the drain valve
located at the inlet/outlet header allowing all water to
drain out of the heater. Use compressed air to blow the
water out of the heat exchanger. Also, disconnect the
pressure switch, this will prevent freeze damage to the
switch.
If the heater has been drained for freezing
condition, do NOT turn "ON" until the system
is circulating water.
1. Examine the vent system. Make sure there are
no obstructions in the flow of combustion and
ventilating air.
2. Inspect the heat exchanger for soot. Clean as
necessary.
3. Remove burner tray and clean burners and main
burner orifices.
4. Keep the heater area clean and free from com-
bustibles and flammable liquids.
3/8 to 1/2 in.
Insulated
Electrode
Blue Flame
Blue Flame
NOTE
Water trapped in the heat exchanger can result in
freeze damage to the exchanger or headers.
Freeze damage is specifically not covered by
the warranty.
CAUTION
Relief Valve
In some installations, a relief valve is required
on the MiniMax Plus. Test the relief valve at
least once a year by lifting the valve lever.
(A.S.M.E. version varies slightly and has the
relief valve pre-installed at factory.)
To winterize,
open drain valve
Relief
Valve
Heater Main
Header
To winterize,
open drain valve
Standard
A.S.M.E. Version
Relief
Valve
Maintenance
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