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Overview
N N o o t t e e : : One copy of this document ships inside the
control panel of each unit and is customer
property. It must be retained by the unit's
maintenance personnel.
This manual describes proper installation, operation,
and maintenance procedures for water cooled systems.
By carefully reviewing the information within this
manual and following the instructions, the risk of
improper operation and/or component damage will be
minimized. It is important that periodic maintenance be
performed to help assure trouble free operation. A
maintenance schedule is provided at the end of this
manual. Should equipment failure occur, contact a
qualified service organization with qualified,
experienced HVAC technicians to properly diagnose
and repair this equipment.
This manual covers installation, operation and
maintenance of 40-80 tons Commercial Modular Self-
Contained products with R-410A refrigerant.
R-410A Compressors
•
Use crankcase heaters which must be energized 24
hours prior to compressor start.
N N o o t t e e : : This unit is equipped with stator heating
capabilities that eliminates the need for a
crankcase heater on the variable speed
compressor only. All fixed speeds must
utilize a crankcase heater.
•
Contains POE oil which readily absorbs potentially
damaging moisture from air.
•
Control box includes a phase monitor to detect
phase loss, line voltage imbalance and reversal.
Modular Self-Contained Unit
Components
Modular self-contained units are complete HVAC
systems used in floor-by-floor applications.
•
A cassette design for easily transporting
components into the building even in the most
demanding environments.
•
Left or right hand power connections.
•
Left or right hand water connections.
•
Factory installed options.
The hermetically sealed scroll compressor motors
utilize internal motor protection and time delays to
prevent excessive cycling.
Units utilize 2-4 refrigerant circuits and ship as
cassettes with a small nitrogen charge and full oil
charge. Each circuit includes filter drier, pressure relief
valve, moisture indicating sight glass, thermostatic
expansion valve with sensing bulb and externally
PKG-SVX027C-EN
equalized, and high pressure cutout. The water cooled
condensers are brazed plate heat exchangers and are
chemically cleanable with "Clean in Place" as option.
Every unit comes with a 20 mesh cleanable screen that
should be installed on the water inlet of the unit
upstream of all condensers, and also come with
differential pressure to indicate when screen should be
cleaned.
Fan Array consists of 3-5 Direct Drive Plenum fans with
each fan equipped with Internal Variable Frequency
Drive and ECM motors.
Figure 1. Modular self-contained signature series unit
components
Standard Controls
Standard controls supplied with the unit include the
Trane UC600 unit controls and the TD-7 touch screen
display. All basic setup parameters are preset from the
factory.
TD-7 Touch Screen Display
The TD-7 is unit mounted and accessible without
opening the unit's front panel. It allows easy setpoint
adjustment using the TD-7 touch screen. In addition,
the TD-7 displays all unit operating parameters and
conditions in a backlit color screen.
For more information on TD-7 display, see the Tracer®
TD-7 Display IOM, BAS-SVX50*-EN.
Tracer® ® UC600 Unit Controller
The UC600 provides "smart" unit control with safety
features and control relays for external devices. The
UC600 utilizes BACnet MSTP to communicate to a front
end Building Automation System (BAS). If a BAS
7
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