Introduction And Features - Hussmann Freedom Line series Installation & Operation Manual

Application Engineering
B U L L E T I N
AE8-1376 R5 May 2016

1. Introduction and Features

Using the Electronic Unit Controller with Copeland™ brand
condensing units will provide many benefits to the contractor
and end-user. It has been designed specifically for demanding
refrigeration applications to ensure precision in installation
and operation. While the Electronic Unit Controller will replace
existing adjustable low-pressure controls, fan cycle switches,
and other relays, it also has additional features. These
features include bump start (where applicable), data storage,
and short cycling protection. This controller does NOT replace
the fixed high-pressure control required by UL.
The Electronic Unit Controller can be used on any condensing
unit application with the appropriate sensors and relays that will
be factory installed on the condensing unit. This document will
explain how Electronic Unit Controllers affect the installation
process and how they can assist in troubleshooting.
Figure 1
Factory-installed controllers are pre-programmed with the
proper settings, resulting in little to no setup time. The unit
comes with an attached label showing how to adjust the low
pressure cut-in and cut-out (See Figure 1).
There is a label on the inside of the enclosure which will list
all of the factory default settings for the controller (including
those not adjustable), a basic controller wiring schematic,
basic button descriptions, the controller part number, the
pre-loaded program part number, and contact information
(See Figure 2). This information can be used if a service
replacement controller is needed.
Figure 2 example
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