ACC-SVN316A-EN
5
Overview of RA Low Ambient Kit
Note: One copy of this document ships inside each kit and
is customer property. It must be retained by the
unit’s maintenance personnel.
The RA portion of this manual provides installation, setup,
and checkout procedures for the low ambient damper(s),
actuators, and controls. The kit is equipped with a damper
assembly, 24V transformer, dual analog LLID, actuator,
associated harnesses, and hardware.
Before attempting to operate or service this equipment,
refer to the instructions below, the unit wiring diagrams,
and procedures in this manual and the applicable
Installation, Operation and Maintenance manual, listed on
the unit nameplate.
Important: The procedures discussed in this manual
should only be performed by qualified,
experienced HVAC technicians. Do not
release refrigerant to the atmosphere! If
adding or removing refrigerant is required, the
service technician must comply with all
federal, state, and local laws.
Kit Inspection
1. Refer to Table 1, p. 5 to verify the appropriate kit was
ordered for the unit being converted.
2. Use the parts list on the installation drawing
(17540302) to confirm all components are present in
the kit.
3. Verify there is no damage prior to starting the
installation.
4. Contact the Trane Parts Center if there is damage or
missing components.
Actuator Specifications
The damper actuator is a direct coupled, non-spring return
device. It is designed to drive the damper shaft either
clockwise (closed damper position) or counterclockwise
(opened damper position) depending on the Input signal.
The actuator is shipped from the factory in the full
counterclockwise (opened) position.
Electrical Ratings
• Power Input: 24 VAC, 50/60 Hz
• Torque Ratings at Rated Voltage:
– Lift and Hold Minimum: 44lb-in. (5 N-m)
– Breakaway Minimum: 44lb-in. (5 N-m)
– Stall Minimum: 44lb-in. (5 N-m)
– Stall Maximum: 58lb-in. (6.5 N-m)
• Actuator Stroke: 95 degrees nominal +/- 3 degrees,
mechanically limited.
• Actuator Timing at 90 degree Stroke: 90 seconds.
• Ambient Temperature Rating: -22°F to +122°F (-30°C
to +50°C).
Table 1. RA Low Ambient field installed kits
Kit Number
Unit Tonnage
175403000001 20-30T
175403000002 40-120T
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