Unit Start-Up Procedures; Sequence Of Operation - Trane CGAM Installation & Operation Manual

Unit Start-Up Procedures

Sequence of Operation

Power Up
The Power up chart shows the respective DynaView screens during a power up of the main
processor. This process takes from 30 to 45 seconds depending on the number of installed Options.
On all power ups, the software model will always transition through the 'Stopped' Software state
independent of the last mode. If the last mode before power down was 'Auto', the transition from
'Stopped' to 'Starting' occurs, but it is not apparent to the user.
Figure 94. Power Up
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:
15. No motor restart inhibit
16. Evaporator Water flowing
17. Power up Start Delay setpoint set to 0 minutes
18. Adjustable Stop to Start Timer set to 5 seconds
19. Need to cool
The above conditions would allow for a minimum power up to starting compressor time of 95
seconds.
148 CG-SVX17D-EN