Trane RTHD

128 RTHD-SVX01D-EN
Periodic Maintenance
• If full load conditions can not be met. Refer to note below to trim the
refrigerant charge
NOTE: Conditions at minimum must be: entering condenser water: 85°F
and entering evaporator water: 55°F
Annual Maintenance
Shut down the chiller once each year to check the following:
 WARNING
Hazardous Voltage!
Disconnect all electric power, including remote disconnects and
discharge all motor start/run capacitors before servicing. Follow
proper lockout/tagout procedures to ensure the power cannot be
inadvertently energized. Verify with an appropriate voltmeter that
all capacitors have discharged. Failure to disconnect power and
discharge capacitors before servicing could result in death or
serious injury.
Table 26 Operating Conditions at Full Load
Description Condition
Evaporator pressure 40-55 psig
Condensing pressure 85-120 psig
Discharge superheat
17
o
F
Subcooling
5-10
o
F
EXV percent open 40-50% open in Auto mode
All conditions stated above are based on the unit running fully loaded,
running at ARI conditions.
Table 27 Operating Conditions at Minimum Load
Description Condition
Evaporator approach
*less than 7
o
F (non-glycol
applications)
Condensing approach
*less than 7
o
F
Subcooling
2-3
o
F
EXV percent open 10-20 % open
*
≅1.0
o
F for new unit.