Ice Making; Running) - Trane Agility HDWA Installation, Operation And Maintenance Manual

S S t t a a r r t t - - u u p p a a n n d d S S h h u u t t - - d d o o w w n n
Ice Making (Running to Ice Making to

Running)

The following figure shows the transition from normal
cooling to ice making, and back to normal cooling.
Figure 42. Sequence of events: ice making (running to ice making to running)
Ice Making Command
1. Front Panel
2. Tracer
3. External Input
Running
(Ice Building)
Open IGV at Max Rate/
Max AFD Frequency
Ignore Softloading and
Set CLS=100%
Energize Ice Building
Relay
Head Relief Request Relay Delay
(1–60 Minutes)
Enforce All Limits and Running Mode Diagnostics
58
Running
(Ice to Normal Transition)
Softload to CWS
De-Energize Ice
Building Relay
Head Relief Request Relay Delay
Energize Head Relief
Request Relay

Ice Making

Command
Withdrawn
Running
Ice to Normal Transition Timer
(0–10 Minutes)
(1–60 Minutes)
Evaporator Leaving
Water Temperature
Rises Above the
Differential to Stop
Running
Modulate IGV/AFD
for LWT Control
De-Energize Head
Relief Request Relay
HDWA-SVX001D-EN
Running