York YPAL 051 User Manual

JOHNSON CONTROLS

FORM 100.50-NOM6 (1207)

•

  Intelli-Start will only work on a Constant Volume 

system using a space sensor.

•

  Intelli-Start will only work when the internal 

scheduling feature is used.  It will not work using 
a hard wired or communicated Occupied com-
mand.

•

  Intelli-Start will only function during the fi rst 

occupied period of each day.

First day of heating or cooling operation

•

  Two hours prior to the start of the occupied period 

the Simplicity Control will compare the space 
temperature to the “CV OCCUPIED COOLING” 
or the “CV OCCUPIED HEATING” set points.

•

 Heating 

operation

–  If the space temperature is 1.5° F or more 

below the “CV OCCUPIED HEATING” set 
point the Simplicity Elite control will stage on 
the heat using the normal heating with space 
sensor logic.

–  The Simplicity Elite control will record the 

space temperature and how long it takes to 
bring the space temperature to the “CV OC-
CUPIED HEATING” set point.

– When the “CV OCCUPIED HEATING” set 

point is reached the Simplicity Elite control 
will divide the elapsed time into 5-minute 
increments.

–  The Simplicity Elite control will determine 

how many 0.1° F the temperature was below 
the “CV OCCUPIED HEATING” set point.

–  The Simplicity Elite control will then cal-

culate how many 0.1° F were satisfi ed  per 
5-minute increment.

–  This number will be recalculated each day.

–  The Simplicity Elite control also records the 

outdoor temperature when the above calcula-
tions are made.

•

 Cooling 

operation

–  If the space temperature is 1.5° F or more 

above the “CV OCCUPIED COOLING” set 
point the Simplicity Elite control will stage on 
cooling operation using the normal Cooling 
with space sensor logic.

–  The Simplicity Elite control will record the 

space temperature and how long it takes to 
bring the space temperature to the “CV OC-
CUPIED COOLING” set point.

– When 

the 

“CV OCCUPIED COO0LING” set 

point is reached the Simplicity Elite control 
will divide the elapsed time into 5-minute 
increments.

–  The Simplicity Elite control will determine 

how many 0.1° F the temperature was above 
the “CV OCCUPIED COOLING” set point

–  The Simplicity Elite control will then cal-

culate how many 0.1° F were satisfi ed  per 
5-minute increment.

–  This number will be recalculated each day.

–  The Simplicity Elite control also records the 

outdoor temperature when the above calcula-
tions are made.

•

  Each morning two hours before the scheduled 

occupied start time the Simplicity Elite control 
looks at the space temperature and the “CV OC-
CUPIED COOLING” and “CV OCCUPIED 
HEATING” set points and determines if there is 
a need for cooling or heating operation.

•

  Based on which need is identifi ed the Simplicity 

Elite control will calculate the number of 0.1° 
F increments the space temperature is from set 
point and multiple this value time the previous 
days calculation on the number of 0.1° F the unit 
can satisfy in 5 minutes.  This will determine 
how many minutes prior to the beginning of the 
occupied period the control will need to start the 
heating or cooling operation.

•

  If cooling mode is selected the Simplicity Elite 

control will also compare the current outdoor 
temperature to the outdoor temperature recorded 
during the previous days start up period.

–  If the current outdoor air temperature is 

10.0° F or more above the previous day the 
Simplicity Elite control will add 5 minutes to 
the above calculated recovery time for every 
10.0° F difference.