Trane Optimus RTHD User Manual

RTHD-SVX01L-EN
61
Normal Shutdown to Stopped or Run
Inhibit
The Normal Shutdown diagram shows the Transition from
Running through a Normal (friendly) Shutdown. The
Dashed lines on the top attempt to show the final mode if
you enter the stop via various inputs.
Figure 33. Sequence of events: normal shutdown to stopped or run inhibit
Running
Local Stop
Normal Latching Diagnostic
Normal Non-Latching Diagnostic
Tracer Stop
External Auto-Stop
Stopped
or
Run Inhibit
Preparing
to Shutdown
Energize Unload
Solenoid
Shutting Down
De-Energize
Compressor
Energize Unload Solenoid
(40 Seconds)
Run Inhibit
Stopped
De-Energize Condenser
Water Pump Relay
Open EXV
De-Energize Primary Oil
Line Solenoid Valve
Energize Unload
Solenoid for 60 mins
Energize Oil Heater
Open EXV
(0 to 20 Seconds)
Evap Pump Off Delay Time
(0-30 Minutes)
De-Energize Evaporator
Water Pump Relay
Close EX V
(20 Seconds)
Close EX V
Shutting Down
EXV Closed and Evap Pump Off Delay Complete
Start-Up and Shutdown

Trane Optimus RTHD Specifications

General

Refrigerant	R-134a
Number of Compressors	1 or 2
Dimensions (LxWxH)	Varies by model
Weight	Varies by model
Compressor Type	Screw