IOM 1207-6 • TRAILBLAZER
®
MODEL AGZ CHILLERS
82 www.DaikinApplied.com
Sequence of Operation
Figure 69: Unit Sequence of Operation - Ice Mode (continued)
Yes
Maintain unit capacity.
Has the stage up time
delay expired?
A minimum time must pass between the starting of circuits.
The first circuit to start is generally the circuit which contains the compressor with
the least number of starts. This circuit will go through it’s start sequence at this
point.
Is fluid temp high
No
enough to start?
Keep pump output on while
chiller is enabled and either
running or ready to run.
Yes
No
The chiller is now ready to start if enough load is present. If the LWT is not higher
than the startup temperature, the unit status will be Auto:Wait for load.
If the LWT is higher than the startup temperature, the unit status will be Auto.
A circuit can start at this time.
No
Is Motor Protection
Yes
delay active?
Pump output remains on
while chiller is enabled.
Start first circuit.
If the chiller is waiting on the motor protection delay after powering up, the unit
status will be Off:Motor Protection Delay.
No
