York YPAL 050 User Manual

Page of 168
92
JOHNSON CONTROLS
FORM 100.50-NOM6 (1207)
Sequence of Operation
When the outdoor temperature is equal to or less than 
the “LOW AMBIENT ECONOMIZER SETPOINT” the 
Simplicity Elite control will set the minimum position 
of the outdoor damper to the programmed “LOW 
AMBIENT ECONOMIZER MINIMUM POSITION” 
setting.
When the outdoor temperature is 1.0° F or more above 
the “LOW AMBIENT ECONOMIZER SETPOINT” the 
Simplicity Control will set the minimum position of the 
outdoor damper to the programmed “ECONOMIZER 
MINIMUM POSITION”
 setting.
EXHAUST FAN OPERATION
The Simplicity Elite control can be confi gured for the 
following types of exhaust fan operation:
  On/Off Control Based On Outdoor Damper Posi-
tion.
  On/Off Control Based On Building Pressure.
  Modulating Damper with Fixed Speed Ex-
haust.
  Modulating Exhaust with a VFD.
On/Off Control Based on Outdoor Damper Posi-
tion
This exhaust option uses a standard motor without any 
type of speed control and a barometric damper.
The following System Parameters must be programmed 
through the Simplicity Elite control:
“POWER EXHAUST INSTALLED” – must be turned 
on using Parameter 43 under the PROGRAM key 
on the Simplicity Elite control board or under the 
ECONOMIZER/EXHAUST tab in the Simplicity PC 
software package.
“ E C O N O M I Z E R   D A M P E R   P O S I T I O N   F O R 
EXHAUST FAN TO TURN ON”
 – must be programmed 
using Parameter 48 under the PROGRAM key 
on the Simplicity Elite control board or under the 
ECONOMIZER/EXHAUST tab in the Simplicity PC 
software package.
“ECONOMIZER DAMPER POSITION FOR EXHAUST 
FAN TO TURN OFF”
 – must be programmed 
using Parameter 49 under the PROGRAM key 
on the Simplicity Elite control board or under the 
ECONOMIZER/EXHAUST tab in the Simplicity PC 
software package.
Sequence of Operation
When the output to the economizer damper is equal 
to or greater then the “ECONOMIZER DAMPER 
POSITION FOR EXHAUST FAN TO TURN ON”
 the 
Simplicity Elite control closes the output to the exhaust 
fan motor.  The output is at the “EXH” terminal of the 
P13 connector.
When the output to the economizer damper is equal to 
or less then the “ECONOMIZER DAMPER POSITION 
FOR EXHAUST FAN TO TURN OFF”
 the Simplicity 
Elite control open the output to the exhaust fan motor.
The minimum run time is 10 seconds and the minimum 
off time is 60 seconds.
On/Off Control Based on Building Pressure
This exhaust option uses a standard motor without any 
type of speed control and a barometric damper.
The following System Parameters must be programmed 
through the Simplicity Elite control:
“POWER EXHAUST INSTALLED” – must be turned 
on using Parameter 43 under the PROGRAM key 
on the Simplicity Elite control board or under the 
ECONOMIZER/EXHAUST tab in the Simplicity PC 
software package.
“ B U I L D I N G   S TAT I C   P R E S S U R E   S E N S O R 
INSTALLED”
 – must be turned on using Parameter 85 
under the PROGRAM key on the Simplicity Elite control 
board or under the EQUIPMENT INSTALLATION tab 
in the Simplicity PC software package.
“BUILDING PRESSURE SETPOINT” must be 
programmed using Parameter 31 under the PROGRAM 
key on the Simplicity Elite control board or under the 
ECONOMIZER/EXHAUST tab in the Simplicity PC 
software package.