Trane Agility HDWA - Ice Making (Auto to Ice Making to Ice Making Complete)

HDWA-SVX001D-EN
59
Ice Making (Auto to Ice Making to Ice
Making Complete)
The following figure shows the transition from auto to
ice making, to ice making complete.
Figure 43. Sequence of events: ice making (auto to ice making to ice making complete)
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Command Ice Making Via
1. Front Panel OD (On)
2. Tracer (On)
3. External Input (Close/Short)
Remove All Ice Making Commands Via
1. Front Panel OD (Auto)
2. Tracer (Auto)
3. External Input (Open)
Evaporator Entering Water
Temperature Falls Below the
Ice Termination Setpoint
Evaporator Entering Water Temperature Rises
Above the Ice Termination Setpoint
Auto
(Waiting to
Start)
Auto
(Starting
Compressor)
Stopped
(Ice Building
Complete)
Running
(Ice Building)
Preparing Shutdown
(Ice Building Complete)
Shutting Down
(Ice Building Complete)
MBC Levitation Will Stop When
RPM < 1200 For 60 Secconds
Head Relief Request Relay
Delay (1 to 60 Minutes)
Head Relief Request Relay
Delay (1 to 60 Minutes)
No Evaporator Pump
Off Delay for
Ice Building
Load Chiller at
Max Rate
Ignore Softloading and
Set Demand Limit=100%
Energize Ice
Building Relay
De-Energize
Compressor
De-Energize Ice
Building Relay
Energize Head Relief
Request Relay
Close IGV
De-Energize Condenser
Water Pump Relay
Close Motor Cooling
Valve
Close Drive Cooling
Valve
De-Levitate
Magnetic Bearings
Close MBC
EXV
De-Energize Head
Relief Request Relay
De-Energize Evap
Water Pump Relay
Stopped
to
Starting
Close Economizer Valve
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