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P/N 472032 Rev. A 1-2-02
18
GENERAL DESCRIPTION
The MiniMax NT Standard Pool and Spa Heater is a fan-assisted induced draft appliance. The MiniMax NT
Standard is available in 200,000, 250,000, 300,000 and 400,000 btu/hr. capacities and are certified for both
indoor and outdoor installations.
The MiniMax NT Standard is designed to operate both in stackless outdoor installations and in indoor stack
vent installations—the indoor installation may be made using Kit 460506 or 460507; see pages 6 and 15,
vertical vent pipe or with a horizontal vent pipe and a Listed side-wall vent.
BASIC SYSTEM OPERATION
TO OPERATE HEATER
1. Start pump, make sure the pump is running and is primed, to close water pressure switch and
supply power to heater.
2. Set thermostat to lowest setting by using up/down arrow keys. See page 22.
3. Push the off key on the Pentair temperature controller 7800 (the amber “off “ led will illuminate).
See page 21.
4. Open the access doors.
5. Push in the gas control knob slightly and turn the knob clockwise to “OFF”.
See page 5 for Instructions.
6. Wait (5) minutes to clear out any gas. If you then smell gas STOP. Follow the safety information
(stated earlier in the lighting instructions section). If you don’t smell gas, go to the next step.
See page 5 for Instructions.
7. Turn the knob on the gas control counter clockwise to the “ON” position. See page 5 for Instructions.
8. Replace the doors.
9. Push either the “Pool” or “Spa” key to start the heater. NOTE: “Pool” key is Factory set at 78° F. and
“Spa” key is set at 104° F.
10. Set the thermostat if needed by using the up/down arrows to set the desired temperature.
a. Fan motor starts, which closes draft proving switch.
b. Ignition module is energized after fan prepurge cycle is completed approximately 2 minutes.
c. Check for powering up the (glow coil) hot-surface ignitor by viewing through the opening holes
on the face plate.
11. The ignitor will warm up and then gas valve opens to ignite the main burners.
12. Heater will operate until desired temperature is reached.
Basic Operation