nVent PLM33N28 - Easy Swap Air Cond Adaptor Plenum M33 to N28, Lt Gray, Steel
nVent

PLM33N28

UPC: 783510262969


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Installation Instructions

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Overview

The nVent HOFFMAN Easy Swap Adaptor Plenum (SKU: PLM33N28) provides an efficient solution for retrofitting newer nVent HOFFMAN air conditioners into existing enclosure cutouts. This adaptor bridges the gap between older air conditioner mounting patterns and modern units, eliminating the need for costly enclosure modifications. It is engineered to maintain NEMA Type 12 and IP 54 ratings when properly installed. The plenum design optimizes airflow, preventing obstruction of air intake and outtake ports common with older cutouts, thereby enhancing the cooling efficiency of the new unit. Constructed from durable 18-gauge steel, the PLM33N28 features a light gray painted finish to match standard Hoffman air conditioners. A gasket is included to ensure a secure seal. This adaptor is ideal for manufacturing, automation, telecommunications, and data centers requiring reliable thermal management for sensitive equipment. Dimensions are 34.31x12.00x1.50 inches (871x305x38 mm).
  • No modification of the enclosure required - designed to match the enclosure cut-out and mounting holes of the air conditioner being replaced
  • Plenum design allows for optimum air flow (vs. a flat plate that can block the air intake and air outtake left by the older air conditioner)
  • Gasket included
  • 18 gauge steel
  • Includes gasket for a secure seal

Specifications

Air Conditioner Manufacturer to Replace
HOFFMAN/Mclean
Application
Controls and Drives;Power Distribution
Application
Power Distribution; Controls and Drives
Color
Light Gray
Color
Gray
Color
Grey
Color Code
RAL 7035
Depth
1.5 IN
Depth
38 mm
Finish
Lt Gray;Powder Coated
Finish
Powder Coated
Height
871 mm
Height
34.31 in
Material
Steel
Material
Mild Steel
NEMA Rating
12 Indoor, dust-resistant
Product Family
EasySwap
Protection Rating
NEMA Type 12
Series
Easy Swap Air Cond Adaptor Plenum
Size
34.31 x 12 x 1.5 in
Thickness
1.21 mm
Thickness
18 ga
Thickness
51.40mm (2.024")
Type
Air Conditioners
Weight
7 lb
Width
305 mm
Width
12 IN
Package Dimensions (L x W x H)
30.1 IN x 12.8 IN x 2.3 IN
Package Dimensions (L x W x H)
76.454 cm x 32.512 cm x 5.842 cm
Package Weight (Imperial)
7.000 L
Package Weight (Metric)
3.175 kg
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How to Install the Plenum Adaptor G52

This guide provides step-by-step instructions for installing the Plenum Adaptor G52, including mounting and wiring.

Estimated time: 30m

Tools needed:

Screwdriver, Wire strippers

Supplies needed:

Gasket, Mounting screws, Washers, Power cord

  1. Install the gasket

    Place the included gasket onto the designated area of the air conditioner to ensure a proper seal.

  2. Secure the adaptor

    Use the provided screws and washers to attach the Plenum Adaptor G52 to the air conditioner. Tighten to a torque of 65 in-lbs (7.34 Nm).

  3. Connect the power cord

    Connect the power cord supplied by the customer to the appropriate terminal on the Plenum Adaptor G52.

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.