P/N 472235 Rev. B 1-22-04
24
Basic Operation (Lighting)
FOR YOUR SAFETY: READ BEFORE LIGHTING
A. This heater is equipped with an ignition device which
automatically lights the main burners. Do not try to light
the burners by hand.
B. BEFORE OPERATING, smell all around the heater
area for gas. Be sure to smell next to the floor because
some gas is heavier than air and will settle on the floor.
WHAT TO DO IF YOU SMELL GAS
- Do not try to light any heater.
- Do not touch any electrical switch; do not use any
phone in your building.
- Immediately call your gas supplier from a neighbor's
phone. Follow the gas supplier's instructions.
- If you cannot reach your gas supplier, call the Fire
Department.
C. Use only your hand to push in or turn the gas control
knob. Never use tools. If the knob will not push in or turn
by hand, don't try to repair it. Call a qualified service
technician. Forced or attempted repair may result in a fire
or explosion.
D. Do not use this heater if any part has been under water.
Immediately call a qualified service technician to inspect
the heater and to replace any part of the control system
and any gas control which has been under water.
E. The MiniMax NT heater incorporates the Pentair
temperature controller to aid you in the operation of the
heater, and to assist in diagnosing a failure in the heater’s
function.
MINIMAX NT/TSI LOW NOx HSI HOT SURFACE IGNITION LIGHTING/OPERATION -
NATURAL GAS
1. STOP! Read the safety information above.
2. Set the thermostat to the lowest setting.
3. Turn off electric power to the heater.
4. Set the thermostat rocker switch to the center “OFF”
position.
5. This heater is equipped with an ignition device which
automatically lights main burners. Do not try to light the
burners by hand.
6. Open the control access door.
7. Push in gas control knob slightly and turn clockwise
to “OFF”. (If not on “OFF” position.)
8. Wait five (5) minutes to clear out any gas. If you then
smell gas, STOP! Follow "B" in the safety information
above. If you don't smell gas, go to the next step.
9. Turn knob on gas control counterclockwise to
“ON”; see Figure 18.
10. Replace the control access door.
11. Turn on the electrical power to the heater.
12. Push the thermostat select switch to “POOL “ or “SPA” to
start the heater.
If you do not follow these instructions exactly, a fire or explosion may result causing personal injury, loss of life
and property damage.
Do not attempt to light the heater if you suspect a natural gas leak. Lighting the heater can result in a fire or
explosion which can cause personal injury, death, and property damage.
WARNING
13. Set the thermostat to the desired setting.
a. Fan motor starts, which closes draft proving switch.
b. Ignition module is energized and the prepurge cycle is
started approximately 15 seconds.
c. The ignitor will warm up and then gas valve opens to
ignite the main burners. Heater will operate until desired
temperature is reached.
14. If the heater will not operate, follow the instructions
"To Turn Off Gas To Heater" and call your service
technician or gas supplier.
OPERATING INSTRUCTIONS
TO TURN OFF GAS TO APPLIANCE
1. Set the thermostat to lowest setting.
2. Turn off all electric power to the heater if service
is to be performed.
3. Remove control access door.
4. Push in gas control knob slightly and turn
clockwise to "OFF". Do not force.
5. Replace control access door.
Gas control knob shown in “ON” position.
Figure 18.
OFF
ON
Gas
Inlet
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