Trane Technologies DRV03113

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Only qualified personnel should install and service the equipment. The installation, starting up, and servicing of heating, ventilating, and air-conditioning

equipment can be hazardous and requires specific knowledge and training. Improperly installed, adjusted or altered equipment by an unqualified person

could result in death or serious injury. When working on the equipment, observe all precautions in the literature and on the tags, stickers, and labels that

are attached to the equipment.

April 2020

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Installation Guide

Variable Frequency Drive

Conversion TR1 to TR170

IntelliPak, CGAM, and RTAC only

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120 to 500 ton (RTAC)

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DRV03113

DRV03114

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This document is an installation guide for a Variable Frequency Drive (VFD) conversion from TR1 to TR170 for Trane IntelliPak, CGAM, and RTAC units. It outlines the procedures for removing the existing TR1 VFD and installing the new TR170 VFD, including wiring and programming parameters.

Function Description:

The TR170 VFD is designed to replace the older TR1 VFD in Trane RTAC air-cooled chillers, IntelliPak II rooftops, and CGAM products. These drives are essential for enabling low and wide ambient operation of the units. The conversion process involves removing the old drive, installing the new TR170 drive, and configuring its parameters. The guide provides step-by-step instructions for each stage, ensuring proper installation and functionality. The TR170 VFD controls condenser fan drives, with the number of drives matching the number of compressors in the unit (e.g., a three-compressor RTAC will have three condenser fan drives).

Important Technical Specifications:

Models Supported: 120 to 500 ton (RTAC) units.
Drives: DRV03113, DRV03114.
Heater: A new drive heater (HTR16716) is required for installation with the TR170 drive.
Mounting: The TR170 drive has a different mounting hole pattern than the original TR1 drive, requiring new holes to be drilled.
Wiring: The TR1 and TR170 drives share the same connection point numbers for power supply and control wiring. However, a four-compressor unit or circuit 1 of a three-compressor unit (RTAC) requires an additional relay (1K9 or 2K9) and associated wiring modifications.
Estimated Drive Weights:
- 200 or 230 VAC, 1.5 Hp: 4.6 lb (2.1 kg)
- 460 VAC, 1.5 Hp: 4.6 lb (2.1 kg)
VFD Programming Parameters: The guide provides detailed tables for setting TR170 VFD parameters specific to RTAC, Ipak II, and CGAM units. These parameters include:
- Regional Settings (0-03): North America for 60 Hz, International for 50 Hz.
- Grid Type (0-06): Depends on Grid Type.
- [Hand on] Key on LCP (0-40): Disable (0).
- Motor Power (1-20): Specific to motor (kW).
- Motor Voltage (1-22): Specific to motor (V).
- Motor Frequency (1-23): Specific to motor (Hz).
- Motor Current (1-24): Specific to motor (A).
- Motor Nominal Speed (1-25): Specific to motor (RPM).
- Start Delay (1-71): 3 seconds (RTAC, Ipak II), 5 seconds (CGAM).
- Start Function (1-72): DC Hold (0) (RTAC), Default Value (Ipak II, CGAM).
- Flying Start (1-73): Enabled (1).
- Min Speed for Function at Stop [Hz] (1-82): 0.1 Hz.
- Motor Thermal Protection (1-90): ETR Trip 1 (4).
- DC Hold/Motor Preheat Current (2-00): Default Value (%).
- DC Braking Time (2-02): Default Value (s) (RTAC, CGAM), AC Brake is active (2) (Ipak II).
- Brake Function (2-10): Off (0) (RTAC, CGAM), AC Brake is active (2) (Ipak II).
- Maximum Reference (3-03): 50/60 (RTAC, Ipak II), 60 (CGAM).
- Reference 2 Source (3-16): No function (0).
- Reference 3 Source (3-17): No function (0).
- Ramp 1 Ramp Up Time (3-41): 5 seconds (RTAC, CGAM), 10 seconds (Ipak II).
- Ramp 1 Ramp Down Time (3-42): 20 seconds (RTAC, CGAM), 10 seconds (Ipak II).
- Motor Speed Direction (4-10): Clockwise (0).
- Motor Speed Low Limit [Hz] (4-12): 3 Hz (RTAC), 22 Hz (Ipak II), 5/6 Hz (CGAM).
- Motor Speed High Limit [Hz] (4-14): 50/60 Hz (RTAC, CGAM), 60 Hz (Ipak II).
- Current Limit (4-18): If p122 = 380V then 115 Else 110 % (RTAC), 137 % (Ipak II), If p122 = 460V then 115 Else 110 % (CGAM).
- Terminal 27 Digital Input (5-12): Disable (0) (RTAC), Coast and reset inverse (3) (Ipak II), No operation (0) (CGAM).
- Function Relay (5-40): Alarm (9).
- Terminal 53 Low Voltage (6-10): 0 V (RTAC), 22 V (Ipak II), 1 V (CGAM).
- Terminal 53 Low Ref./Feedb. Value (6-14): 0 (RTAC), 5/6 (Ipak II, CGAM).
- Terminal 53 High Ref./Feedb. Value (6-15): 50/60.
- Switching Frequency (14-01): 5 kHz.
- Function at Mains Imbalance (14-12): De-rate (3).
- Reset Mode (14-20): Auto Reset x10 (10) (RTAC, CGAM), Auto Reset x3 (3) (Ipak II).
- Automatic Restart Time (14-21): 30 seconds (RTAC, CGAM), 5 seconds (Ipak II).
- RFI Filter (14-50): Off (0).

Usage Features:

Step-by-step Installation: The manual provides clear, sequential instructions for removal, installation, and programming.
Visual Aids: Figures illustrate typical unit configurations and VFD locations to aid in identification and installation.
Parameter Programming: Detailed tables list all necessary VFD parameters for RTAC, Ipak II, and CGAM units, ensuring correct configuration.
Parameter Copying: The Local Control Panel (LCP) can be used to upload parameters from one configured drive and download them to multiple unconfigured drives, saving time and reducing errors in multi-drive installations.
Heater Blanket Installation: Instructions are provided for installing a heater blanket, which is supplied with the TR170 VFD kit, for low ambient applications.
Wiring Diagram Matrix: A comprehensive matrix of wiring diagrams is provided for various IntelliPak II, CGAM, and RTAC configurations, accessible via e-Library or local Trane representatives.

Maintenance Features:

Safety Warnings: Prominent warnings, cautions, and notices are included throughout the manual, emphasizing personal safety, proper handling of refrigerants, and the use of Personal Protective Equipment (PPE) during installation and servicing.
Qualified Personnel Requirement: Installation and service must be performed by qualified personnel due to potential hazards.
Factory Defaults Reset: Instructions are provided to reset all programming parameters back to factory defaults, which can be useful for troubleshooting or re-configuration. A "hard reset" option is also available if the drive display fails or parameters are inaccessible.
Documentation: The guide refers to additional resources like TGE Online Help, Tracer Ensemble Online Help, Tracer Ensemble User Guide, Tracer SC Online Help, and Tracer TU Online Help for further support and troubleshooting.
Environmental Concerns: Emphasizes responsible refrigerant practices and adherence to environmental regulations (e.g., Federal Clean Air Act Section 608).