Installation - Controls; Control Options - Trane UniTrane Installation, Operation And Maintenance Manual

Installation - Controls

Control Options

Available control options are:
• Fan speed control (provided when no control package
is selected)
• Customer-supplied terminal interface (CSTI)
®
• Tracer ZN010 controller
Figure 57. Fan speed control
X1361617010
X13651617020
Figure 58. Standard adapter board
Customer low-voltage
interface for fan speeds,
variable fan speed, and
24 Vac supply
Customer Supplied Terminal Interface
(CSTI)
The control interface is intended to be used with a field-
supplied, low-voltage thermostat or controller. The control
box contains a relay board which includes a line voltage to
24-volt transformer, quiet contactors (for electric heat
units), and an optional disconnect switch. All end devices
are wired to a low-voltage terminal block and are run-
tested, so the only a power connection and thermostat
connection is needed to commission the unit. Entering
water temperature sensors and controls are provided
whenever a change-over coil is selected. When N.O. valves
are selected, inverting relays are provided for use with
standard thermostats.
80
®
• Tracer
®
• Tracer
®
• Tracer
Communications Interface
Fan Speed Control with Standard Adapter
Board
The fan speed control is available for units that do not have Trane factory-
mounted control packages. This variable fan speed option is low-voltage
and has three 24-volt relays using a factory-wired transformer and relays
to control the fan motor.
The adapter allows direct customer interfacing through the use of
terminal strips. Standard interfacing includes:
Variable speed (0–10V) inputs.
The standard adapter board eliminates many separate wiring harnesses
in the panel and allows simple, mistake-proofed single-plug interfacing
of:
• VelociTach motor control board
• Transformers
• Motors
• Valves
• Dampers
• Electric heat control
• Fan speed control
ZN510 controller
ZN520 controller
UC400-B controller with Air-Fi® Wireless
UNT-SVX07J-EN