nVent NHZ280446G300 - SpectraCool Narrow Hazardous Location AC, 4000BTU 460V, Lt Gray, Steel
nVent

NHZ280446G300

UPC: 783510286385

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Installation Instructions

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Overview

The nVent SpectraCool Narrow Hazardous Location AC (SKU: NHZ280446G300) delivers reliable 4000BTU cooling for indoor and outdoor hazardous environments where safety and performance are critical. Engineered by nVent, a global leader in thermal management and electrical solutions, this Type 4, C1D2-rated air conditioner provides precise temperature control in volatile atmospheres without the need for purge or pressurized systems. Its sleek, narrow design minimizes visible fasteners and eliminates bulky cast enclosures, ensuring both aesthetic appeal and robust durability in demanding industrial settings. Designed for hazardous locations classified as Class I, Division 2 or Zone 2, the SpectraCool Narrow AC is ideal for applications where flammable gases, vapors, or dust may be present. Common industries include oil & gas, chemical processing, pharmaceutical manufacturing, food & beverage, and water/wastewater treatment facilities. The unit’s 460V voltage rating ensures compatibility with North American industrial power systems, while its 4000BTU cooling capacity effectively stabilizes ambient temperatures in enclosures, control panels, or small to medium-sized hazardous-area rooms. Key features of the SpectraCool Narrow AC include a lightweight steel construction with a light gray powder-coated finish for corrosion resistance and long-term performance. The NEMA Type 4 rating guarantees protection against windblown dust, rain, splashing water, and hose-directed water, making it suitable for both indoor and outdoor installations. Unlike traditional hazardous-location air conditioners that require complex purge systems, this unit operates safely without additional pressurization, reducing installation time and maintenance overhead. Professionals choose nVent’s SpectraCool Narrow series for its combination of safety, efficiency, and ease of integration. The compact footprint allows for installation in tight spaces where larger enclosures or traditional cooling systems cannot fit, while the absence of visible fasteners enhances both durability and visual appeal. With nVent’s reputation for innovation and reliability in thermal management, this air conditioner is a trusted choice for engineers and facility managers seeking to protect sensitive electronics and maintain operational continuity in hazardous environments. Whether cooling control panels in a refinery, stabilizing temperatures in a pharmaceutical cleanroom, or ensuring equipment longevity in a chemical plant, the SpectraCool Narrow AC delivers consistent performance with minimal maintenance. Its design prioritizes both worker safety and equipment protection, aligning with OSHA and NEC standards for hazardous locations. For facilities requiring a dependable, code-compliant cooling solution, the nVent SpectraCool Narrow AC (NHZ280446G300) stands as a proven performer in the most challenging conditions.
  • Not re-built from light industrial air conditioners
  • Painted galvanized sheet metal cover for rugged factory and outdoor environments
  • Corrosion resistant coating on ambient side components for Type 4X models
  • Corrosion resistant coating on ambient and enclosure side components for Type 4X Offshore models
  • Dust resistant coils for filterless operation in most environments
  • Cleanable, reusable aluminum mesh filter protects coils for extremely dusty and dirty atmospheres
  • Digital temperature control
  • Narrow design to accommodate 12-in (300-mm) deep cabinets
  • R134a, R513A or R407C earth-friendly Refrigerant
  • Models for 115, 230 and 400/460 3-phase VAC power input

Specifications

Application
Hazardous Environments
Btu Rating
4,000
Color
Gray
Color
Light Gray
Color Code
RAL 7035
Depth
356 mm
Depth
14 in
Height
28 IN
Height
711 mm
IP Rating
IP66
Material
Steel
Material
Mild Steel
Max Current
2.5 A
Nema Rating
Type 4
Nominal Capacity Btu/h
4,000 Btu/h
Nominal Capacity Watts
1,172 W
Nominal Voltage
460 V
Number Of Phases
1
Operating Temperature
-40-52 °C
Operating Temperature
-40-125
Operating Temperature
-40-52
Product Family
SpectraCool
Remote Access Control
No
Series
SpectraCool Narrow
Thickness
18 ga
Thickness
51.40mm (2.024")
Thickness
1.27 mm
Type
Air Conditioners
Voltage AC
400-460 V
Voltage Rating
460 V
Voltage Rating
400-460/460 VAC
Weight
44 kg
Weight
105 lb
Width
11.5 in
Width
292 mm
Package Dimensions (L x W x H)
17.75 IN x 13.5 IN x 30.25 IN
Package Dimensions (L x W x H)
45.085 cm x 34.29 cm x 76.835 cm
Package Weight (Imperial)
105.000 L
Package Weight (Metric)
47.628 kg
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How to Install the NHZ280446G300 Air Conditioner

This guide provides step-by-step instructions for installing and configuring the NHZ280446G300 air conditioner in hazardous locations.

Estimated time: 1h

Tools needed:

Screwdriver, Wire strippers, Multimeter

Supplies needed:

Mounting screws, Terminal connectors, Mounting gasket kit

  1. Inspect the air conditioner

    Check the air conditioner for any visible damage from shipping. Ensure it is in proper working condition before installation.

  2. Prepare the installation site

    Select a location for the air conditioner that allows for at least six inches of clearance on one side and twenty inches in front for maintenance access.

  3. Mount the air conditioner

    Using the mounting gasket kit, secure the air conditioner to the enclosure. Ensure the unit is mounted within 3° from vertical and avoid damaging the gasket.

  4. Connect the power supply

    Refer to the nameplate for electrical requirements and wire the unit to a properly grounded power supply. Ensure the circuit is fused appropriately.

  5. Adjust the controller settings

    Set the desired cabinet temperature on the controller. Refer to the manual for specific instructions on adjusting the settings.

  6. Test the air conditioner

    Energize the unit and verify that the evaporator fan starts running. Allow the unit to operate for 5-10 minutes to ensure proper functionality.

Frequently Asked Questions about nVent

What industries and applications are nVent products used for?

nVent products are engineered for critical infrastructure and industrial applications across multiple demanding sectors. Key markets include Construction, Data Centers, Defense, Healthcare, Mining, Oil & Gas Refineries, Power Plants, Rail/Transit, Renewable Energy, Security, Ship Building, Steel Mills, Telecom, and Utilities. Their solutions are designed to withstand extreme environmental conditions, with temperature ranges from -55°C to 105°C and specialized features like UV resistance, oil resistance, and flame resistance.

What environmental ratings do nVent products have?

nVent enclosures feature comprehensive environmental ratings, including UL 508A, CSA, and NEMA Type 1, 2, 3, 4, 4X, 12, and 13 certifications. They are rated IEC 60529 IP66, providing robust protection against dust, water, and corrosion in both indoor and outdoor environments. These products operate effectively in temperatures ranging from -40°F to 266°F, with enhanced UV inhibitors for outdoor weathering and oil-resistant gaskets for superior sealing.

What accessories are available for nVent products?

nVent offers a comprehensive range of accessories across multiple product lines, including EMC accessories like bonding cable clamps and strain reliefs, inline accessories such as lock inserts and mounting brackets, CONCEPT accessories including panel conversion kits and rack-mount angles, and seismic accessories for specialized mounting requirements. Key accessory categories include grounding kits, DIN rail mounting solutions, panel supports, handles, and various mounting hardware compatible with different enclosure types.

What certifications and standards do nVent products comply with?

nVent products meet critical international certifications including UL (United States), CSA (Canada), CE (European Community), and EAC (Russia). Our products are designed to comply with rigorous industrial standards such as NEMA enclosure ratings, IEC 60529 IP ratings, and international safety standards across multiple industrial markets including oil & gas, power, manufacturing, and infrastructure.

What is nVent's warranty policy?

nVent offers a standard 18-month warranty from invoicing date for most automation products, covering defects in workmanship and materials. The warranty requires proper transportation, handling, storage, and installation within specified environmental conditions. Warranty coverage includes repair or replacement at nVent's discretion, with certain conditions such as authorized service repairs and operation within designed capacity limits.

What technical support does nVent offer?

nVent offers comprehensive technical support through multiple global contact centers across North America, South America, Europe, Middle East, India, and Asia. Customers can reach technical experts by phone at regional numbers, with the North American headquarters in Minneapolis, MN providing primary support at +1.763.421.2240. Additionally, nVent provides online support resources through their website, including CAD drawing downloads and an 'Ask The Expert' feature to assist with product technical inquiries.