32
INSTALLATION
ICC Control Operation
Conventional Thermostat Wiring
ICC Control Operation with Conventional
Thermostat Wiring
Installation Verification
s
V AC power on R&C must be present at the ICC for it
to operate
s ,INEVOLTAGEMUSTBEPRESENTATTHE)##FORTHE
compressor and the outdoor fan to operate
s 4HE)##DISPLAYSAhvFORSTANDBYMODE3TANDBY
mode indicates line voltage and 24VAC are present at
the ICC and there is not a call for unit operation from
the thermostat.
Call for Compressor Operation
s )FACALLFORCOMPRESSOROPERATIONISRECEIVEDBYTHE)##
lRSTSTAGESECONDSTAGECOOLINGORlRSTSTAGESECOND
STAGEHEATING
s 4HE)##HASANONOFFFANDELAYOFONE SECONDFOR
each stage of heating or cooling.
s 4HE)##IGNORESTHELOWERPRESSURECONTROLFORTHElRST
90 seconds of compressor operation.
s /NHEATPUMPSTHE)##IGNORESTHE,0#DURINGTHE
defrost cycle.
1)
First Stage Cooling Operation
– When the ICC
receives a call for first stage cooling operation, a lower
case “c” is displayed on the dual 7-segment LEDs.
2) Second Stage Cooling Operation
– When the ICC
receives a call for second stage cooling operation, an
upper case “C” is displayed on the dual 7-segment
LEDs.
3-minute Anti-short Cycle Timer
s 4HE)##HASABUILTINMINUTETIMEDELAYBETWEEN
compressor operations to protect the compressor
against short cycling. The dual 7-segment LEDs will
flash “c” or “C” while the short cycle timer is active and a
call for unit operation is received.
s 4HEMINUTETIMEDELAYCANBEBYPASSEDWHENA
call for compressor operation is present by pressing
the TEST button for 1 second and releasing. The
compressor will begin operation and the dual
7-segment will stop flashing.
30 Second Minimum Run Timer
s 4HE)##HASABUILTINSECONDMINIMUMUNITRUN
time. If a call for compressor operation is received
by the ICC and the call is removed, the compressor
will continue to operate for 30 seconds. The dual
7-segment LEDs will flash “c” or “C”
while the minimum
run timer is active.
3ECOND#OMPRESSOR&AN$ELAY
s 4HE)##STARTSSTOPSTHEOUTDOORFANONE SECOND
AFTERTHESTARTSTOPOFTHECOMPRESSORUPONACALLFOR
COMPRESSOROPERATIONTOMINIMIZECURRENTINRUSHANDOR
voltage drop.
Active Compressor Protection Mode
s 4HE)##ACTIVELYPROTECTSTHECOMPRESSORFROMHARMFUL
operation during a fault condition.
s 7HENTHE)##DETECTSACONDITIONTHATCOULDDAMAGE
the compressor, the ICC will enter active protection
mode and lockout compressor operation
s 4HECONDITIONCAUSINGACTIVEPROTECTIONMUSTBE
resolved then the ICC can be reset to restart the
system.
s 4HEREAREFIVE ACTIVEPROTECTIONMODES
1) Low Pressure Control Lockout
s 4HE)##WILLDISPLAYAFLASHINGh,vFOLLOWEDBYA
flashing 21 when a low pressure control lockout occurs.
s 4HE)##ADDRESSESLOWPRESSURECONTROLFAULTS
differently depending on the mode of unit operation
COOLINGORHEATINGMODE
Zero (0) displayed
The unit is in standby
Lower case “c” indicates first stage cooling operation
Upper case “C” indicates second stage cooling operation
Flashing lower case c
A call for first stage cooling has been received
Flashing upper case C
A call for second stage cooling has be received
Summary of Contents for RA17 Series
Page 16: ...16 N R Application not recommended INSTALLATION Table 2 Tubing...
Page 17: ...17 N R Application not recommended INSTALLATION Table 3 Tubing...
Page 54: ...54 R C For Single Phase Models WIRING DIAGRAMS Wiring Diagrams...
Page 55: ...55 WIRING DIAGRAMS Wiring Diagrams...
Page 56: ...56 NOTES...
