Pentair NT Standard Series General Description, Basic System Operation, Basic Operation

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Basic Operation

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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.

P/N 472032

Rev. A 1-2-02

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Contents MiniMax NT Standard Series For additional free copies of this manual call 800Table of Contents MiniMax NT Standard Code RequirementsWarranty Information Safety RulesOperation For Your Safety Read Before Lighting Operation LightingInstallation Instructions SpecificationsInstallation Electrical ELECTRICAL, for MiniMax NT Standard HeatersTWO-WIRE or THREE-WIRE Remote HOOK-UP Wire RemoteInstallation Remotes Three-wire remote Installation Dual Models HSI ElectronicWater Connections PlumbingPlumbing Connections GAS Connections Installation Indoor Indoor VENTING-General RequirementsSee page 15 for Indoor Vent Adaptors Indoor Vent Adaptors Fits ALL Models Installation IndoorInstallation Outdoor VentilationGeneral Description Basic System OperationBasic Operation Water Pressure Switch Safety ControlsAIR Pressure FAN Switch Typical Water Pressure SwitchOperation of Ignition Module Basic Thermostat Operation Minimax NT Standard Pentair Temperature ControllerGeneral Normal Operation no RemoteTo Change the Factory Temperature Settings Time SettingTemperature & Time Setting Programming Time SETTING, cont’d Time Setting ProgrammingEnergy Saving Tips Maintenance InstructionsMaintenance Spring and Fall OperationPool and SPA Water Maintenance Water TreatmentChemical Balance If pH becomes too high over alkaline, it has these effectsTroubleshooting-Normal Operation Sequence of Heater Normal Operation SequenceService CHECKS-IGNITION Module Troubleshooting-Normal Operation of HeaterTroubleshooting & Service Troubleshooting General Heater Short Cycling Rapid On and Off OperationMinimax NT Standard Heater Dual Voltage Description QTY MiniMax NT Standard Heaters Limited Warranty