Pentair NT Standard Series installation manual MiniMax NT Standard, Code Requirements

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Introduction

MiniMax NT Standard

Pool and Spa Heaters

Congratulations on your purchase of a MiniMax NT Standard high performance heating system. Proper installation and service of your new heating system and correct chemical maintenance of the water will ensure years of enjoyment. The MiniMax NT Standard is a compact, lightweight, efficient, induced-draft, gas fired high performance pool and spa heater that can be directly connected to schedule 40 PVC pipe. The MiniMax NT Standard also comes equipped with the Pentair multifunction 7800 temperature controller which shows, at a glance, the proper functioning of the heater. All HSI (hot-surface ignition) MiniMax NT Standard heaters are designed with a direct ignition device (HSI) which eliminates the need for a standing pilot. The MiniMax NT Standard requires an external power source (120/240 VAC 50/60 Hz) to operate.

IMPORTANT NOTICES

...For the installer and operator of the MiniMax NT Standard pool and spa heater. The manufacturer’s warranty may be void if, for any reason, the heater is improperly installed and/or operated. Be sure to follow the instructions set forth in this manual. If you need any more information, or if you have any questions regarding to this pool heater, please contact Pentair Pool Products, Inc. at (800) 831-7133.

These heaters are designed for the heating of swimming pools and spas, and should never be employed for use as space heating boilers, general purpose water heaters, in non-stationary installations, or for the heating of salt water.

Do not use the heater to protect pools or spas from freezing if the final maintenance temperature desired is below 60° F. as this will cause condensation related problems.

CODE REQUIREMENTS

The installation must conform with local codes or in the absence of local codes with the latest National Fuel Gas Code, ANSI Z223.1, and the latest edition of the National Electrical Code, NFPA 70.

Installation in Canada to be made in accordance with the latest CAN/CGA-B149.1 or .2 and CSA C22.1 Canadian Electric Code, part 1.

Rev. A 1-2-02

P/N 472032

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Contents For additional free copies of this manual call 800 MiniMax NT Standard SeriesTable of Contents Code Requirements MiniMax NT StandardWarranty Information Safety RulesOperation Operation Lighting For Your Safety Read Before LightingSpecifications Installation InstructionsELECTRICAL, for MiniMax NT Standard Heaters Installation ElectricalTWO-WIRE or THREE-WIRE Remote HOOK-UP Wire RemoteInstallation Remotes Three-wire remote Models HSI Electronic Installation DualWater Connections PlumbingPlumbing Connections GAS Connections Indoor VENTING-General Requirements Installation IndoorSee page 15 for Indoor Vent Adaptors Indoor Vent Adaptors Fits ALL Models Indoor InstallationVentilation Installation OutdoorGeneral Description Basic System OperationBasic Operation Typical Water Pressure Switch Safety ControlsAIR Pressure FAN Switch Water Pressure SwitchOperation of Ignition Module Normal Operation no Remote Minimax NT Standard Pentair Temperature ControllerGeneral Basic Thermostat OperationTo Change the Factory Temperature Settings Time SettingTemperature & Time Setting Programming Time Setting Programming Time SETTING, cont’dSpring and Fall Operation Maintenance InstructionsMaintenance Energy Saving TipsIf pH becomes too high over alkaline, it has these effects Maintenance Water TreatmentChemical Balance Pool and SPA WaterNormal Operation Sequence Troubleshooting-Normal Operation Sequence of HeaterTroubleshooting-Normal Operation of Heater Service CHECKS-IGNITION ModuleTroubleshooting & Service Heater Short Cycling Rapid On and Off Operation Troubleshooting GeneralMinimax NT Standard Heater Dual Voltage Description QTY MiniMax NT Standard Heaters Limited Warranty