nVent HOFFMAN 1600BTU ProAir Harsh Environment Indoor Air Conditioner
Quick guide for the nVent HOFFMAN 1600BTU ProAir Harsh Environment Indoor Air Conditioner. Includes technical specifications, maintenance tips, and key operational features for this industrial cooling unit.
Table of contents
Quick guide from the manual
This document provides an overview of the nVent HOFFMAN ProAir Harsh Environment Indoor Air Conditioner (CR23 series). This unit is designed to protect components in corrosive environments. Key operational highlights include a hinged front cover for easy maintenance and a cleanable, reusable aluminum mesh filter.
Product Overview
The ProAir Harsh Environment Air Conditioner is engineered for industrial settings. It features a low-carbon mild-steel sheet-metal cover, making it suitable for rugged factory and outdoor environments. The unit is functionally tested before shipping and includes mounting hardware and gaskets.

Key Features
- Easy Maintenance: The hinged front cover allows quick access to all internal components.
- Filter System: Includes a cleanable, reusable aluminum mesh filter to protect coils and maintain cooling performance.
- Durability: Designed with a smooth surface and minimal visible fasteners to resist corrosion.
- Thermostat: Reliable mechanical thermostat located behind the filter.
- Protection: Rated NEMA Type 12 and 3R.
Technical Specifications
- Nominal Capacity: 1733 Btu/h (508 W)
- Voltage: 460 V, 1 Phase
- Max Current: 0.9 A
- Operating Temperature: -40 to 131 °F (-40 to 55 °C)
- Dimensions: 23 in (H) x 10 in (W) x 8.75 in (D)
- Weight: 60 lb
- Material: Mild Steel, Powder Coated (Light Gray, RAL 7035)
Maintenance
The unit is designed for simple service. The condenser coil can be cleaned while the unit is still mounted to the cabinet. Ensure the aluminum mesh filter is cleaned regularly to maintain maximum cooling performance.
Manufacturer information
nVent HOFFMAN
Practical help
Common problems
Check and clean the reusable aluminum mesh filter. Ensure the condenser coil is free of debris.
Before use
- Verify the power supply is 460V 1PH.
- Ensure the mounting surface is prepared for the unit's weight (60 lb).
- Confirm the enclosure environment is compatible with NEMA Type 12/3R ratings.
- Check that all mounting hardware and gaskets are present.
Specs in practice
- NEMA Type 12/3R
- Indicates protection against dust, falling dirt, dripping non-corrosive liquids, and rain/sleet.
- Nominal Capacity
- The cooling output of the unit is 1733 Btu/h or 508 Watts.
- Operating Temperature
- The unit functions in ambient temperatures ranging from -40°F to 131°F.
Images and diagrams
- The unit features a hinged front door for quick access to internal components.
- The condenser coil is accessible for cleaning without removing the unit from the cabinet.
Model compatibility
- Not equipped for remote access control.
- Designed for indoor use in corrosive environments.
- If T-Series is required, consult the factory for availability.
Manual page author
Michael Turner
Technical manual editor
Reviews PDF manuals for structure, safety notes, and practical product details so readers can find the right information quickly.