York YPAL 060, YPAL 061, YPAL 050, YPAL 051 manual Subsequent Operation, Sequence of Operation

•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 first occupied period of each day.

Sequence of Operation

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 satisfied 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.

FORM 100.50-NOM6 (1207)

–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 satisfied 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.

Subsequent Operation

•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 identified the Simplicity	5
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.

JOHNSON CONTROLS 87