12
Outdoor Coil Temp
(OCT)
}
Outdoor Air Temp
(OAT)
}
COMM STATUS
A05332
Fig. 14 --- Control Board
Time
Delays
The unit time delays include:
S Five minute time delay to start cooling or heating
operation when there is a call from the thermostat or
user interface (To bypass this feature in a
non--communicating system, momentarily short and
release forced defrost pins, in a communicating system
push the UI fan and up buttons simultaneously for
approximately 10 seconds)
S Five minute compressor recycle delay on return from a
brown out condition
S Two minute time delay to return to standby operation
from last valid communication (with Infinity only)
S One minute time delay of outdoor fan at termination of
cooling mode when outdoor ambient is greater than or
equal to 100 deg F
S Fifteen second delay at termination of defro st before
the auxiliary heat (W2) is de--energized
S Twenty second delay at termination of defrost before
the outdoor fan is energized
S Thirty second compressor delay when Quiet Shift
enabled
Utility
Interface
With Infinity Control
The input labeled UTIL is active only when a communicating
Infinity Control is used. This input allows a power utility device
to interrupt compressor operation during peak load periods. See
Fig. 15 for wiring connections. When the utility sends a signal to
shut the system down, the User Interface will display
”CURTAILMENT ACTIVE”.
INFINITY BOARD
R
UTILITY RELAY
*
UTILITY SIGNAL
OPEN RELAY
*
SUPPLIED BY UTILITY PROVIDER
UTIL
A05410
Fig. 15 --- Utility Interface
With Non--Communicating Thermostats
When the utility curtailment interface is used with a
non--communicating thermostat, the utility relay should be wired
between R and Y.
25HPA
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