Introduction
Thank you for choosing a unit manufactured by AIRSYS.
The AIRSYS UNICOOL line of wall mounted HVAC systems is optimized for energy efficient removal of heat
generated by electronics from enclosed shelters. All units are equipped with variable speed inverter
compressors, variable speed EC fans, and an advanced control system that increases system efficiency while
reducing wear and tear.
Another feature that promotes energy efficiency is the robustly designed integrated economizer, described as
“free cooling”. This feature, when conditions are suitable, provides 100% of the rated cooling capacity of the
wall pack unit (WPU) while consuming ~ 1kW or less whenever the outdoor temperature is a few degrees
lower than a predetermined setpoint. This feature alone can save equipment shelter operators significant utility
costs, especially in cooler climates.
In addition to having excellent energy efficiency, these systems are simple to operate, maintain, and service.
The AIRSYS design team is committed to listening and responding to the customer community. As a result,
these systems have continuously evolved with customer-defined features that have improved the overall
quality and the user experience.
Usability features include:
• A functional step test that facilitates complete operational verification in less than 5 minutes
• Unobstructed access to all key components for Preventive Maintenance (PM) and servicing
• A high level of operational reliability via the built in Fail-Safe mode
• Completely selectable alarm relays (NC or NO) to enable the system to adapt to the customer’s
requirements
• In depth real-time system parameter readings available remotely and on site.
• Real-time power monitoring for individual units
The AIRSYS UNICOOL WPUs are available in cooling capacities from 1.5 - 10 tons; however, the sensible
cooling capacity of these machines is as much as 40% higher than a traditional machine. An available ordering
guide can help properly match the capacity of the HVAC system to the heat load in the shelter.
With a suite of best-in-class components from around the globe, AIRSYS UNICOOL WPUs deliver quality and
reliability while substantially reducing cost of operation.
1.1 Using this Manual
Read this manual carefully before attempting to install or start the unit. Retain this manual for reference for the
entire operational life of the unit. This manual provides information on the following topics:
• Product Overview
• Instructions for physical, and electrical installation of WPUs and the controller box
• Procedures for commissioning the system
• System operation, including system alarms, program menus, and advanced troubleshooting
• Preventive maintenance
This application is not intended for use by persons (including children) with reduced physical, sensory or mental
capacities, or lack of experience and knowledge, unless they have been given supervision or instruction
concerning use of appliance by a person responsible for their safety.
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