Immediate Shutdown To Stopped Or Run Inhibit - Trane Optimus RTHD Installation, Operation And Maintenance Manual

Start-Up and Shutdown
Immediate Shutdown to Stopped or Run
Inhibit
The Immediate Shutdown diagram shows the Transition from Running through an Immediate Shutdown. The Dashed
lines on the top attempt to show the final mode if you enter the stop via various inputs.
Figure 34. Sequence of events: immediate shutdown to stopped or run inhibit
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Immediate Shutdown to Stopped or Run Inhibit

Immediate Shutdown Non-Latching Diagnostic
Immediate Shutdown Latching Diagnostic
Front Panel Immediate Shutdown
Shutting Down
Running
Open EXV (0-20 Seconds)
De-Energize
Condenser Water Pump
Energize Unload
Solenoid for 60 mins
Open EXV
De-Energize Primary Oil
Line Solenoid Valve
Energize Oil Heater
De-Energize
Compressor
Confirm No Compressor Currents
8 Seconds after compressor is de-energiz e d
64
p
Shutting Down
Close EXV (20 Seconds)
Close EX V
Evap Pump Off Delay Time (0-30 Minutes)
EXV Closed and Evap
Pump Off Delay Complete
Run Inhibit
Stopped
Run Inhibit
or
Shutting Down
Stopped
De-Energize Evaporator
Water Pump Relay
RTHD-SVX01K-EN