York YPAL 060 User Manual

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86
JOHNSON CONTROLS
FORM 100.50-NOM6 (1207)
Sequence of Operation
The Simplicity Elite control will keep the compressors 
off line for 5 minutes.  After 5 minutes, the Simplicity 
Elite control will turn the compressor back on with a 30 
second delay between compressors and resume normal 
operation.  
After 5 minutes Simplicity Elite control will reset this 
communicated input back to “OFF” regardless of the 
communicated status.  To initiate another cycle the 
communicated value would have to switch to the low 
state “OFF” and then back to the high state “ON”.
LOADSHED
This feature can be used to temporally reduce the 
electrical consumption of the unit by turning off all the 
active compressors.  The feature is only available as a 
communicated input to the Simplicity Elite control.  The 
BACnet name is SET_LOADSHED and the BACnet 
instance number is BV13.  For Modbus use address 
(HEX) 41L, address (DEC) 65L Bit 1.
Sequence of Operation
If compressors are energized when the Simplicity Elite 
control receives this command the Simplicity Elite 
control will turn off all compressor immediately, even 
if the minimum run time requirement has not been met 
for the compressor.
The Simplicity Elite control will keep the compressors 
off line for 5 minutes.  After 5 minutes, the Simplicity 
Elite control will turn the compressor back on and 
resume normal information.  The same compressors that 
were running before the Loadshed input was received 
will be turned back on with a 30 second delay between 
compressors.
After 5 minutes, Simplicity Elite control will reset this 
communicated input back to “OFF” regardless of the 
communicated status.  To initiate another cycle the 
communicated value would have to switch to the low 
state “OFF” and then back to the high state “ON”.
DIRTY FILTER
A adjustable differential pressure switch can be a added 
to the unit to monitor the fi lters and initiate an alarm 
when the pressure drop across the fi lters become greater 
than the setting of the switch.  When the switch closes, 
the alarm will be initiated.
In order to use this feature a pressure switch must be 
installed and the feature enabled.  To enable the dirty 
fi lter feature.
“DIRTY FILTER SWITCH INSTALLED” – must be 
enabled using Parameter 51 under the PROGRAM 
key of the Simplicity Elite control board or under the 
EQUIPMENT INSTALLATION tab in the Simplicity 
PC software package.
Sequence of Operation
The control monitors the voltage input at terminals 
“FILT” at the P22 connector on the Simplicity Elite 
control board.  If the status goes high, 24 volt input, 
for ten minutes the Simplicity Elite control will initiate 
an Alarm 23 “Dirty Filter Switch Has Tripped” but the 
operation of the unit will continue.
As soon as the 24-volt input is removed from the input 
terminals, the alarm will turn off.
METRIC OPERATION
When this feature is turned on all the temperature data 
will be converted to metric.
The following must be enabled for Metric Operation:
“METRIC OPERATION”- must be enabled using 
Parameter 57 under the PROGRAM key on the 
Simplicity Elite control board.
INTELLI-START
This feature can be used to energize the heating or 
cooling function of the unit to bring the temperature of 
the space up to the “CV OCCUPIED COOLING” and 
“CV OCCUPIED HEATING” set points prior to the 
start of the occupied period.  
The following parameter must be programmed in order 
to use this feature:
“INTELLI-START OPERATION ENABLE” – must be 
enabled under the SYSTEMS OPTIONS tab of the 
Simplicity PC software package.
The following criteria must be met for Morning Warm-
up operation: