Trane Ascend ACR C Series User Manual

AC-SVX003A-EN
91
Ice Making (Running to Ice Making to
Running)
The following diagram shows the transition from normal
cooling to ice making, and back to normal cooling.
Figure 37. Sequence of events: ice making (running to ice making to running)
Running
Ice Making Command:
1. Tracer
2. External
3. Front Panel
Running
(Unit is Building Ice)
Ice Making Command
Withdrawn (prior to
ice complete)
Running
Stage and modulate all
compressors in
sequence to full load
(if not already)
Start Compressors and
Circuits per Normal
Staging – See other
sequence diagrams
Run Inhibit
(Ice to Normal Transition)
Ice To Normal Transition Timer
(fixed 2 mins)
Run Unload, Close EXVs and
Perform Operational Pumpdown (if
reqd) then Shutoff Compressors,
Energize Heaters
Ignore Softloading and
Set DLS = 200 %*
Energize Ice Building
Relay
Enforce All Limits and
Running Mode Diagnostics
Evap Leaving
Water Temp Rises
Above the
Differential To Start
Maximum 1:10 to fully
loaded
De-energize Heaters and
Control EXVs per Normal
Staging - See other
sequence diagrams
De-energize Oil Heaters
and Control EXVs per
Normal Staging - See other
sequence diagrams
Running
Auto
Enforce All Limits and Running Mode Diagnostics
Control Circuit’s
Condenser Fans for Diff
Pressure
Control Circuit’s
Condenser Fans for Diff
Pressure
Turn off both Circuits’
Condenser Fans
Confirm No
Compressor Currents
Close EXVs or leave closed
for Circuits’ Off Cycle
Pre-position EXV, Prestart
Condenser Fans
De-Energize Ice
Building Relay
Continue to Run Evap
Water Pump Throughout
* If Ice Building Demand Limit Enable =
Disabled (Default)
Start-up and Shutdown

Trane Ascend ACR C Series Specifications

General

Brand	Trane
Model	Ascend ACR C Series
Category	Chiller
Language	English