Trane RTHD Installation Instructions Manual page 28

Pre-Installation
Figure 25.
11. Pull the plugs under the motor housing on the compressor
(one or two plugs total) and drain the oil.
Note: C-, D-, and E-frame compressors have two plugs;
B-frame compressors have one plug.
12. De-energize the oil solenoid valve.
13. Change the oil filter (number 38; not insulated). Change
the cold oil filter (number 48; insulation will need to be
removed).
14. Perform pressure test.
15. Evacuate the unit to a minimum of 500 microns and
perform a rise test.
16. Add the total oil charge according to
AFD to the RTHD chiller requires more oil than the original
factory configuration.
a. Add enough Solest 120 (OIL00315/317) to the oil filter
(number 7) to fill the filter.
b. Add remaining total Solest 120 (OIL00315/317) charge
at the oil sump (number 7).
Important: Be sure to either run the evaporator and
condenser pumps when adding refrigerant to
prevent freezing or verify that the water has
been drained to prevent freezing tubes.
17. Compare amount of refrigerant removed in previous step
to the nameplate charge. Charge appropriately at
evaporator (number 25) according to the table for units with
an AFD. Add refrigerant as needed to ensure the unit is
fully charged.
28
Oil Plugs in Motor
Housing
Important:
18. At the oil sump, apply provided oil label sticker listing the
Table 6. Adding an
Oil Plugs in Bearing
Housing
Oil charges shown in
chillers with AFD; when retrofitting existing
RTHD chillers with AFD, increase oil charge
shown in Table 6
much oil was extracted during oil removal
process.
new oil, OIL00315.
Table 6 are for new RTHD
proportionately based on how
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