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York YPAL 051 User Manual

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96
JOHNSON CONTROLS
FORM 100.50-NOM6 (1207)
Sequence of Operation
The following parameters must be programmed:
“SPACE TEMP TRENDING ALARM TEMP”- must 
be programmed under SYSTEM OPTIONS tab of the 
Simplicity PC software   package.
“SPACE TEMP TRENDING ALARM TIME”- must 
be programmed under SYSTEM OPTIONS tab of the 
Simplicity PC software package.
Sequence of Operation
•
  To enable this feature “SPACE TEMP TREND-
ING ALARM TEMP” must be set at other then 
zero.
•
 Set 
“SPACE TEMP TRENDING ALARM TEMP” 
to the number of degrees above or below the 
space temperature that you want temperature 
trending to begin.  The range is 1.0° F to 25.0° F 
in 1.0° F increments.
•
  To enable this feature  “SPACE TEMP TREND-
ING ALARM TIME” must be set at other then 
zero.
•
 Set 
“SPACE TEMP TRENDING ALARM TIME” 
to the amount of time the space temperature must 
be trending above or below the “SPACE TEMP 
TRENDING ALARM TEMP” before a Space 
Temperature Alarm will be initiated.  The range 
is 1 to 120 minutes in 1 minute increments.
•
  The unit must have been in a given operating 
mode for 10 minutes before trending will be-
gin.
•
  Every time the trend moves towards the space 
temperature set point the “SPACE TEMP 
TRENDING ALARM TIME” will reset to zero
•
  When the temperature is above or below the 
“SPACE TEMP TRENDING ALARM TEMP” 
and the trend continues to be away from the space 
temperature and the “SPACE TEMP TRENDING 
ALARM TIME” has expired, the Simplicity Elite 
control will declare a “SPACE TEMPERATURE” 
Alarm.  The Simplicity Elite control will fl ash an 
Alarm Code 41.
•
  The Simplicity Elite control will continue normal 
operation while in this fault mode.
•
  The Simplicity Elite control will continue to 
show the fault until the space temperature is less 
then the “SPACE TEMP TRENDING ALARM 
TEMP”.
SAT ALARM FOR HEATING
When this feature is turned on, the Simplicity Elite 
control monitors the supply air temperature in the 
heating mode and will generate an alarm if the supply air 
temperature goes below the set point, and if conditions 
are met, modifi es the amount of ventilation air to keep 
the supply air temperature above this set point when all 
the heating stages are energized.  This feature can only 
be used on unit operating in the VAV mode.
In order to use this feature the following parameter must 
be programmed:
“SUPPLY AIR TEMP ALARM SETPOINT FOR 
HEATING” – must be set under the HEATING SETUP 
tab of the Simplicity PC software package.
•
 If “SUPPLY AIR TEMP ALARM SETPOINT 
FOR HEATING” is set to zero this feature is dis-
abled.  If not set to zero, then the setting becomes 
the alarm set point.
•
 Set “SUPPLY AIR TEMP ALARM SETPOINT 
FOR HEATING” to the temperature you want 
to use for the Alarm set point.  The range is 1.0° 
F to 120.0° F in 1.0° F increments.
Sequence of Operation
“Supply Air Temp Alarm Setpoint for Heating” 
Alarm
•
  The control will initiate a “SUPPLY AIR TEMP 
ALARM FOR HEATING” and fl ash  an Alarm 
Code 39 if the following conditions are met:
–  All the stages of heating have been on for 10 
or more minutes.
–  The supply air temperature is 20 degrees 
below the “SUPPLY AIR TEMP ALARM 
SETPOINT FOR HEATING” set point for 10 
minutes.
–  The outdoor air is not 20.0° F or more cooler 
then the “SUPPLY AIR TEMP ALARM 
SETPOINT FOR HEATING” set point.
–  The outdoor air damper is not open more than 
20%
•
  In order to reset the above Alarm power to the 
unit must be cycled on and off.