Trane RTHD series - Power Up to Starting and Stopped to Starting

Unit Start-up
RTHD-SVX02H-EN 95
Power Up to Starting
The Power up to starting diagram shows the timing from
a power up event to energizing the compressor. The
shortest allowable time would be under the following
conditions:
1. No motor restart inhibit
2. Evaporator and Condenser Water flowing
3. Power up Start Delay setpoint set to 0 minutes
4. Adjustable Stop to Start Timer set to 5 seconds
5. Need to cool
The above conditions would allow for a minimum power
up to starting compressor time of 95 seconds.
Figure 69. Power Up to Starting
RTHD Sequence of Operation
Power Up To Starting Compressor
Stopped to Starting
The stopped to starting diagram shows the timing from
a stopped mode to energizing the compressor. The short-
est allowable time would be under the following condi-
tions:
1. No motor restart inhibit
2. Evaporator and Condenser Water flowing
3. Power up Start Delay Timer has expired
4. Adjustable Stop to Start Timer has expired
5. Need to cool
The above conditions would allow the compressor to
start in 60 seconds
Figure 70. Stopped to Starting
RTHD Sequence of Operation
Stopped to Starting