Installation and Maintenance Manual

General Data
RTAE-SVX001B-EN 11
Drive Cooling System
Drive cooling fluid volumes are dependent on unit
configuration.
• Use Table 2 for units that meet the following criteria:
• Model number digits 10, 11 = AA
• Use Table 2 for units that meet the following criteria:
• Model number digits 10, 11 = AB
• AND Digits 28, 29 = 0X
• Use Table 2 for units that meet the following criteria:
• Model number digits 10, 11 = AC
• AND Digits 3-7 = 225, 250, 275 or 300
• AND Digit 22=1or2
• AND Digits 28, 29 = 0X
• Use Table 3 for all other unit configurations.
Non-Trane approved chemicals could react with system
components and result in failure. Contact a qualified
service technician and your localTrane Parts Center.
Note: The use of incorrect compounds in the drive
cooling system may result in scaling, erosion,
corrosion or freezing.TheTrane Company
warranty specifically excludes liability for
corrosion, erosion, freezing or deterioration of
Trane equipment.
Proper fluid level is important to the operation of the unit.
See “Drive Cooling Expansion Tank,” p. 71 for fluid level
check instructions.The circuit capacities are shown in
tables above.
If the level is below the recommended minimum levels,
contact your localTrane office.
Note: Drive cooling fluid service life is 5 years. See “Drive
Cooling System,” p. 71.
Table 2. Drive cooling with load inductor
Unit Size (tons)
Standard Length Unit
150 165-200 225-250 275-300
gal l gal l gal l gal l
Fluid Type Trane Heat Transfer Fluid CHM01023
Fluid Volume
Ckt 1 1.74 6.58 1.83 6.92 2.00 7.58 2.09 7.92
Ckt2 1.93 7.30 2.27 8.59 2.44 9.24 2.58 9.78
Total 3.67 13.88 4.10 15.51 4.44 16.82 4.67 17.69
Table 3. Drive cooling without load inductor
Unit Size (tons)
Standard Length Unit Extended Length Units
(a)
150S - 165S 150 165-250 275-300 150S - 165S 150 165-250 275-300
gal l gal l gal l gal l gal l gal l gal l gal l
Fluid Type Trane Heat Transfer Fluid CHM01023
Fluid Volume
Ckt 1 1.28 4.86 1.14 4.30 1.23 4.64 1.32 4.98 1.37 5.20 1.30 4.93 1.32 4.98 1.41 5.33
Ckt2 n/a n/a 1.32 5.01 1.67 6.31 1.81 6.84 n/a n/a 1.67 6.31 1.81 6.84 1.95 7.38
Total 1.28 4.86 2.46 9.31 2.89 10.95 3.12 11.83 1.37 5.20 2.97 11.23 3.12 11.83 3.36 12.71
(a) Units are extended length if either of the following are selected:
Transformer (model number digit 28 = 1)
Harmonic Filtration Option (model number digit 29 = 1)
Units without Harmonic Filtration Option or Transformer (digits 28, 29 = 0X) are standard length.
NOTICE:
Equipment Damage!
Use only Trane HeatTransfer Fluid P/N CHM01023. This
fluid is a direct use concentration and is not to be
diluted. Do not top off with water or any other fluid.
Use of unapproved fluids, or dilution of approved fluid
could result in catastrophic equipment damage.