Pentair NT Series Safety Controls, Vacuum AIR Pressure FAN Switch, Water Pressure Switch

Page 22

Section IV. Operation

22

SAFETY CONTROLS

 

 

Figure 21.

VACUUM AIR PRESSURE (FAN)

 

SWITCH

 

The air pressure switch, (see Figure 21), is a safety

 

device used to insure that the combustion air blower

 

(fan) is operating and has been designed to monitor

 

the vacuum (negative) pressure within the blower

 

housing. The air pressures switch is factory set and is

 

connected upstream of the ignition module. The

 

ignition module does not operate unless the air

 

pressure switch and all safety switches are closed.

 

 

AIR PRESSURE SWITCH

WATER PRESSURE SWITCH

Air Pressure Switch

 

The water pressure switch, (see Figure 22), closes when there is a sufficient flow of water to the heat exchanger to safely operate the heater. The switch has been preset by the Factory at 1½ PSI for operation. NOTE: See, Below Pool Level Installation instructions on page 8. The switch may remain closed with no water flow if there is more than a 3 ft. elevation difference between the heater (heat exchanger) and the pool water line—if this is the case, the water pressure switch must be reset by a qualified service technician to maintain open switch contacts with no water flow.

NOTE

If the pool is more than one floor above or one floor below the heater, the water pressure switch may have to be replaced with a flow switch.

Figure 22.

Adjustment Knob

Typical Water Pressure Switch

THERMAL FUSE

This is a single-use switch, mounted on combustion chamber jacket divider (inner front panel). The fuse, (see Figure 23), is activated by excessive temperature due to abnormal operating conditions. Upon detection of excessive heat within the inner front panel, the fuse will open the safety circuit causing shutdown of the heater.

Figure 23.

Thermal Fuse

P/N 472235

Rev. E 4-15-05

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Contents MiniMax NT Series Customer Service Table of Contents Heater Identification Information Heater Identification Information HINWarranty Information Important NoticesConsumer Information and Safety Code RequirementsInstallation Instructions SpecificationsPlumbing Connections Below Pool InstallationBelow or Above Pool Installation ValvesWater Connections Reversing HeadersReversible Inlet/Outlet Connection, cont’d GAS Connections GAS Line InstallationsSediment Traps GAS Pipe Sizing Pipe Sizing for GAS Line ConnectionsTesting GAS Pressure GAS Pressure RequirementsIndoor Venting General Requirements Indoor Installation USA only Outdoor Shelter Installation CanadaVent Adaptors Combustion AIR SupplyFits ALL Models Indoor Installations Minimax NT Venting Guidelines Outdoor Installation Venting Guidelines Side View Outdoor Vent KITElectrical Rating 60 Hz 120 / 240 Volts AC, single phase Electrical ConnectionsWiring DIAGRAM-NT STD & TSI with Ddtc MiniMax NT TSI & STD W/DDTC Wiring DiagramBasic System Operation Minimax NT HSI Electronic Ignition LIGHTING/OPERATIONWater Pressure Switch Safety ControlsVacuum AIR Pressure FAN Switch Thermal FuseOperation of Ignition Module Heat ModeHigh Limits Failure to Light the BURNER-LOCK OUTDigital Display Temperature Controller Ddtc System Indicator LightsSection IV. Operation SET UP Temperature Setting Troubleshooting Instruction Troubleshooting DdtcTroubleshooting General Service CHECKS-IGNITION ModuleMaintenance Instruction Energy Saving TipsSpring and Fall Operation Winter OperationChemical Balance Pool and SPA WaterReplacement Parts For Stdonly onlyRev. E Rev. E NT TSI w/DDTC 400 Model Starting w/Serial No Rev. E Rev. E Rev. E Pentair Water Pool and Spa, Inc Guide Dinstallation ET DE Fonctionnement Chauffe-eau pour piscine et spa MiniMax NTService Clients Table des matières Information Pour Lidentification DU CHAUFFE-EAU Information Pour Lidentification DU CHAUFFE-EAUConsignes Importantes GarantieInformation ET Recommandations À Lintention DU Consommateur Conformité AUX CodesConsignes dinstallations SpécificationsSoupapes Raccords DE PlomberieDérivation Manuelle Raccordements DES Conduites Deau Collecteurs réversiblesRaccords dentrée et de sortie réversibles, suite Raccordement DES Conduites DE GAZ Installations DE LA Conduite DE GAZCollecteurs DE Sédiment Dimension DES Tuyaux DE GAZ Mesure DES Tuyaux Pour Raccords D’ARRIVÉE DE GAZVérification DE LA Pression DE GAZ Le côté admission de la soupape de gazVentilation Intérieur Exigences Générales Installation Intérieure États-Unis Uniquement Adaptateurs Daération Admission Dair DE CombustionConvient À Tous LES Modèles Conseils Pour Linstallation Intérieur DU Minimax NT Ensemble DE Ventilation Pour Lextérieur Terminaison de la ventilationRaccordements Électriques Classement électrique 60 Hz 120/240 Volts c.a. monophaséWire Color Couleur DU Cable Consignes de Fonctionnement Fonctionnement Générale DU SystèmeCommutateur DE Pression Deau Contrôles DE SécuritéCommutateur Ventilateur DE Pression DU Vide Dair Fusible ThermiqueVerrouillage EN CAS Déchec Dallumage Mode ChaleurHautes Limites Échec DE LA Flamme RallumageThermostat À Affichage Numérique Témoins Indicateurs DU SystèmeSection IV. Fonctionnement Réglage DU Thermostat Réglage DE LA Temperature Consignes DE Dépannage Dépannage Thermostat a Affichage NumeriqueConsignes DE Dépannage Verifications Dentretien Module DallumageConseils Pour Économies Dénergie Soupape DE SurpressionFonctionnement AU Printemps ET EN Automne Fonctionnement EN HiverÉquilibre Chimique DE Leau EAU DE Piscine ET DE SPAPièces DE Remplacement OnlyRev. E Pièces de Rechange pour La Série de Pièces DE Remplacement Rev. E Annote Annote Veuillez Concerver CE Guide Dinstruction

NT Series specifications

Pentair is a renowned name in the realm of water filtration and fluid management solutions, and the NT Series stands out as a key player in their extensive product lineup. Engineered for optimal performance and reliability, the NT Series showcases innovative features and technologies that cater to various water treatment needs.

One of the defining characteristics of the Pentair NT Series is its exceptional filtration capabilities. These filters are designed to effectively remove sediments, chlorine taste and odor, and other contaminants, ensuring clean and safe drinking water. With a multi-stage filtration process, the NT Series utilizes advanced materials and technologies that enhance filtration efficiency and longevity.

The NT Series is equipped with advanced filter media that can capture particles as small as 0.5 microns. This level of filtration is essential for households and commercial applications, where water quality is paramount. The filters are also designed for easy replacement, ensuring minimal downtime and ease of maintenance for users.

Another prominent feature of the NT Series is its compact design, making it suitable for various installation spaces. The filters are engineered to maximize flow rate while maintaining high filtration efficiency, ensuring that users do not experience reduced water pressure. This balance of performance and design is integral, especially in demanding applications.

Moreover, the NT Series incorporates innovative technology to monitor filter life and performance. Several models come with built-in sensors that provide real-time data on filter conditions, allowing users to know when it's time for a replacement. This proactive approach to maintenance enhances user experience and ensures continued access to high-quality water.

The materials used in the NT Series are also noteworthy. Constructed from durable, corrosion-resistant components, these filters are designed to withstand harsh operating conditions while maintaining peak performance over time. This enhances the overall lifespan of the product, providing users with a reliable and long-lasting solution for their water filtration needs.

In summary, the Pentair NT Series represents a blend of advanced filtration technology, user-friendly design, and durable construction. With its ability to remove various contaminants, easy maintenance features, and compact design, the NT Series caters to residential and commercial users alike. Investing in the NT Series ensures access to clean, great-tasting water while enjoying the benefits of reliable and efficient filtration technology.
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