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Advanced Controller
If the optional microprocessor controller is furnished, a
separate manual is included in the unit data package
provided with the unit. The controller user interface
display may be field mounted to a wall within the
conditioned space or it may be located outside the
conditioned space if desired. Refer to the supplemental
instructions provided with the mounting kit when
mounting the controller display. When locating the display
panel, consider the length of wire to be used. As an option,
a 30 ft, 75 ft or 150 ft long cable may be provided by Trane.
Optional Equipment
Note: Do not mount any optional equipment on the A/C
access panels of the unit.
Condensate Pump (Field Installed)
NOTICE
Equipment Damage!
Always follow manufacturer's instructions when in-
stalling a field-installed condensate pump. If
manufacturer's instructions were not provided with the
pump, contact Trane product support for the pump
documentation. Do not install the pump without first
reading the manufacturer's instructions. Failure to
exactly follow manufacturer's instructions may on rare
occasions result in serious damage to the TR-OHS unit
and the surrounding facility.
If the unit was not purchased with the factory-installed
condensate pump option, the shipped-loose condensate
pump should be mounted as near to the air conditioning
system as possible. The inlet hole in the pump must be
below the lowest part of the drain from the A/C unit. The
pump has two mounting supports so it can be hung on an
adjacent wall. Ensure that the pump is level for proper
operation.
A P-trap must be installed between the pump and the unit.
The height of the trap must be a minimum of 2 inches to
exceed the total static pressure of the system and ensure
proper water drainage from the drain pan.
Important:
Properly size and vent the P-trap according
to applicable codes and best practices.
Non-Fused Service Switch
The non-fused service switch may be used to disconnect
main power and isolate the unit during maintenance and
service. The switch has a lockable handle to lock power out
during maintenance periods. The switch is typically
mounted to the A/C cabinet; however, it may be shipped
loose for field installation. The case has a top keyhole
mounting slot and two holes in each bottom corner for
mounting. The hardware for mounting the switch is field
supplied. Select suitable fasteners for the intended
mounting surface.
AH-SVX008C-EN
The non-fused service switch can be mounted near the
unit or in a central location. Non-fused service switches are
rated for either indoor or outdoor use. Ensure that the
proper type is used for your application.
Note: Refer to the National Electrical Code and local
codes for the appropriate mounting location.
Remote Sensors
The remote temperature sensor or temperature/humidity
(T/H) sensor must be located so that it will properly sense
the temperature and/or humidity conditions to be con-
trolled. The sensor should not be mounted near a doorway
or an area where it would be exposed to direct sunlight.
When locating the sensor, consider the length of wire to be
used. As an option, a 75 ft or 150 ft cable may be provided
by Trane. Refer to the applicable section that follows to
mount the sensor.For wiring details, refer to Section
"Controls," p. 13
and to the electrical drawing provided
with the unit.
Remote Temperature Sensor (A-Tech)
Figure 10. Temperature sensor for A- Tech
Note: The remote temperature sensor has a maximum
range of 330 ft.
1. Install shielded or non-shielded two wire twisted cable
from the thermostat to the remote sensor location.
2. Open the sensor case by grasping the side and pulling
the two halves apart.
3. Use the sub-base as a template to mark the mounting
hole locations on the mounting surface. Drill size for
the wall anchors is 1/4 in. Mount the sub-base over the
wires coming out of the wall using the two screws and
anchors provided. Do not use hex head screws.
4. Strip 1/4 in. of insulation from the two wires at the
remote sensor. Install the wires in the terminals. The
wires can be connected with either polarity. Seal the
hole in the wall around the cable to eliminate any draft
that might affect the sensor.
5. Make the wiring connections. Refer to section
Temperature Sensor (A-Tech)," p. 27
diagram supplied with your unit.
6. Replace the sensor cover.
Installation
"Remote
and to the wiring
15
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