The compressor overload settings are based on the chiller voltage and compressor size. When these values are set incorrectly, the diagnostic Compressor Overload Setting will be annunciate by the controller.
- Compressor overload settings for the 35, 40, 50, and 60 ton GP compressors can be found in the table link below. These tables are in the IOM for each chiller.
RTAA 70-125: Compressor Overload DIP Switch Settings
Table 1. RTAA 70-125: Compressor Overload DIP Switch Settings
| Compressor Tons | Volts/Hz | RLA | Primary Turns Through Current Transformer | Current Transformer Extension* | Overload Setting Dip Sw/Decimal** 12345 |
|---|---|---|---|---|---|
| 35 | 200/60 | 115 | 1 | -02 | 01011/11 |
| 230/60 | 100 | 1 | -01 | 11111/31 | |
| 346/50 | 58 | 1 | -10 | 01100/12 | |
| 380/60 | 61 | 1 | -10 | 10000/16 | |
| 400/50 | 50 | 1 | -10 | 00000/0 | |
| 460/60 | 50 | 1 | -10 | 00000/0 | |
| 575/60 | 40 | 1 | -09 | 01111/15 | |
| 40 | 200/60 | 142 | 1 | -02 | 11011/27 |
| 230/60 | 124 | 1 | -02 | 10001/17 | |
| 346/50 | 72 | 1 | -01 | 00111/7 | |
| 380/60 | 75 | 1 | -01 | 01010/10 | |
| 400/50 | 62 | 1 | -10 | 10001/17 | |
| 460/60 | 62 | 1 | -10 | 10001/17 | |
| 575/60 | 50 | 1 | -10 | 00001/1 | |
| 50 | 200/60 | 192 | 1 | -03 | 11100/28 |
| 230/60 | 167 | 1 | -03 | 10010/18 | |
| 346/50 | 96 | 1 | -01 | 11100/28 | |
| 380/60 | 101 | 1 | -02 | 00001/1 | |
| 400/50 | 84 | 1 | -01 | 10011/19 | |
| 460/60 | 84 | 1 | -01 | 10011/19 | |
| 575/60 | 67 | 1 | -10 | 10111/23 | |
| 60 | 200/60 | 233 | 1 | -04 | 10011/19 |
| 230/60 | 203 | 1 | -04 | 01000/8 | |
| 346/50 | 117 | 1 | -02 | 01101/13 | |
| 380/60 | 123 | 1 | -02 | 10001/17 | |
| 400/50 | 101 | 1 | -02 | 00001/16 | |
| 460/60 | 101 | 1 | -02 | 00001/1 | |
| 575/60 | 81 | 1 | -01 | 10000/16 |
Table 1 footnotes:
* The Current Transformer base part number is XJ35025. The numbers in this column are suffixes to the base number.
** On the DIP switch, 1=ON, 0=OFF. The decimal value should be set in the compressor overload setting menu of the UCM. If the DIP switch value does not match the decimal value entered into the UCM, the related compressor(s) will continue to run, but a diagnostic will be initiated, both settings will be ignored, and the UCM will use the lowest possible trip setting value.
RTAA 130-400: Compressor Overload DIP Switch Settings
Table 2. RTAA 130-400: Compressor Overload DIP Switch Settings
| Compressor Tons | Volts/Hz | RLA | CT Ext* | Overload Setting DIP Sw/Decimal** 12345 |
|---|---|---|---|---|
| 70 | 200/230.60 | 280 | -05 | 00100/04 |
| 460.60 | 122 | -02 | 10000/16 | |
| 575.60 | 98 | -01 | 11110/30 | |
| 85 | 200/230.60 | 306 | -05 | 01011/11 |
| 460.60 | 133 | -02 | 10110122 | |
| 575.60 | 107 | -02 | 00110/06 | |
| 100 | 200/230.60 | 375 | -05 | 11010/26 |
| 460.60 | 163 | -03 | 10000/16 | |
| 575.60 | 131 | -02 | 10110122 |
Table 2 footnotes:
* The CT base part number is X13580253. The numbers in this column are suffixes to the base number.
** On the DIP switch, 1 = ON, 0 = OFF. The decimal number is the setting Menu Item 56. The DIP switch setting and the decimal display of Item 56 comprise a redundant overload setting. If the values are not set to match, the related compressor(s) will continue to run, but a diagnostic will be initiated, both settings will be ignored, and the UCM will use the lowest possible trip setting value.
RTWA 70-125
Table 3. RTWA 70-125 (Std. Cond. Temp.) DIP Switch Settings
| Tons | VAC/Hz | RLA | C.T.* | Overload Setting** |
|---|---|---|---|---|
| 35 | 575/60 | 37 | -09 | 01001/09 |
| 460/60 | 46 | -09 | 11001/25 | |
| 380/60 | 55 | -10 | 01000/08 | |
| 230/60 | 91 | -01 | 11001/25 | |
| 200/60 | 105 | -02 | 00100/04 | |
| 400/50 | 44 | -09 | 10110/22 | |
| 346/50 | 51 | -10 | 00010/02 | |
| 220/50 | 80 | -01 | 01111/15 | |
| 40 | 575/60 | 43 | -09 | 10100/21 |
| 460/60 | 54 | -10 | 00111/07 | |
| 380/60 | 65 | -10 | 10101/21 | |
| 230/60 | 108 | -02 | 00111/07 | |
| 200/60 | 124 | -02 | 10001/17 | |
| 400/50 | 52 | -10 | 00011/03 | |
| 346/50 | 60 | -10 | 01111/15 | |
| 220/50 | 94 | -01 | 11011/27 | |
| 50 | 575/60 | 57 | -10 | 01011/11 |
| 460/60 | 72 | -01 | 00111/07 | |
| 380/60 | 87 | -01 | 10110/22 | |
| 230/60 | 143 | -03 | 00110/06 | |
| 200/60 | 164 | -03 | 10001/17 | |
| 400/50 | 69 | -01 | 00011/03 | |
| 346/50 | 80 | -01 | 01111/15 | |
| 220/50 | 126 | -02 | 10011/19 | |
| 60 | 575/60 | 68 | -01 | 00010/02 |
| 460/60 | 85 | -01 | 10100/20 | |
| 380/60 | 102 | -02 | 00010/02 | |
| 230/60 | 169 | -03 | 10011/19 | |
| 200/60 | 194 | -04 | 00100/04 | |
| 400/50 | 82 | -01 | 10001/17 | |
| 346/50 | 94 | -01 | 11011/27 | |
| 220/50 | 148 | -03 | 01001/09 |
Table 3. Footnotes:
* The Current Transformer base part number is X13580253. The numbers in this column are suffixes to the base number.
** On the DIP switch, 1=ON, 0=OFF. The decimal value should be set in the compressor overload setting menu of the UCM
Table 4. RTUA & RTWA (70-125 High Cond. Temp.) DIP Switch Settings
| Tons | VAC/Hz | RLA | C.T.* | Overload Setting** |
|---|---|---|---|---|
| 35 | 575/60 | 40 | -09 | 01111/15 |
| 460/60 | 50 | -10 | 00000/00 | |
| 380/60 | 61 | -10 | 10000/16 | |
| 230/60 | 100 | -01 | 11111/31 | |
| 200/60 | 115 | -02 | 10111/11 | |
| 400/50 | 50 | -10 | 00000/00 | |
| 346/50 | 58 | -10 | 01100/12 | |
| 220/50 | 87 | -01 | 10110/22 | |
| 40 | 575/60 | 50 | -10 | 00000/00 |
| 460/60 | 62 | -10 | 00001/17 | |
| 380/60 | 75 | -01 | 10100/10 | |
| 230/60 | 124 | -02 | 10001/17 | |
| 200/60 | 142 | -02 | 11011/27 | |
| 400/50 | 62 | -10 | 10001/17 | |
| 346/50 | 72 | -01 | 00111/07 | |
| 220/50 | 108 | -02 | 00111/07 | |
| 50 | 575/60 | 67 | -01 | 00001/01 |
| 460/60 | 84 | -01 | 01011/19 | |
| 380/60 | 101 | -02 | 00001/01 | |
| 230/60 | 167 | -03 | 10010/18 | |
| 200/60 | 192 | -03 | 11100/28 | |
| 400/50 | 84 | -01 | 10011/19 | |
| 346/50 | 96 | -01 | 01100/28 | |
| 220/50 | 147 | -03 | 10000/08 | |
| 60 | 575/60 | 81 | -01 | 10000/16 |
| 460/60 | 101 | -02 | 00001/01 | |
| 380/60 | 123 | -02 | 10001/17 | |
| 230/60 | 203 | -04 | 01000/08 | |
| 200/60 | 233 | -04 | 10011/19 | |
| 400/50 | 101 | -02 | 00001/01 | |
| 346/50 | 117 | -02 | 01110/13 | |
| 220/50 | 176 | -03 | 10110/22 |
Table 4. Footnotes:
* The Current Transformer base part number is X13580253. The numbers in this column are suffixes to the base number.
** On the DIP switch, 1=ON, 0=OFF. The decimal value should be set in the compressor overload setting menu of the UCM
Additional details
Notes:
Resource Available
- Reference Literature: (Electronic copies can be pulled from e-library at Trane Residential)
- IOM: RTAA-SVX01A-EN, RTAA-IOM-3, RTWA-SVX07A-EN
Other Question/Problem/Cause Statements
- What should the compressor overload settings be for this chiller?
- What should the dip switch settings on the compressor module be?
- What is the RLA of the compressor?
Facts
- RTAA 70-125 TON (PUEBLO)
- Air-Cooled Chiller (Pueblo) (RTAA 70-125 Ton)
- Compressor Chiller (Pueblo) (RTUA)
- Water-Cooled Chiller (Pueblo) (RTWA)
WARNING:
Information in this article is intended for use by individuals possessing adequate backgrounds of electrical and mechanical experience and who comply with all federal, state, and local laws, rules, orders, or regulations related to the installation, service, or repair of a heating or central air conditioning product. Any attempt to install, service, or repair a heating or central air conditioning product may result in personal injury and/or property damage. The manufacturer or seller cannot be responsible for the interpretation of the information contained herein, nor can it assume any liability in connection with its use.