98
JOHNSON CONTROLS
FORM 100.50-NOM6 (1207)
Sequence of Operation
“Economizer Minimum Position” Alarm
•
The supply air temperature must be above the
“SUPPLY AIR TEMP ALARM SETPOINT FOR
COOLING”
set point and the following sequence
of events have occurred:
– All the stages of cooling must have been on
for 10 or more minutes.
– The outdoor air is 20.0° F or more warmer
then the
“SUPPLY AIR TEMP ALARM
SETPOINT FOR COOLING”
set point.
– The economizer must be open more than
20%.
•
If the above criteria is met:
– The Simplicity Elite control will close the
outdoor damper for ten minutes.
– After ten minutes, the Simplicity Elite control
will read the supply air temperature.
– If the supply air temperature is below the
“SUPPLY AIR TEMP ALARM SETPOINT
FOR COOLING”
, the control will keep the
outdoor damper closed and complete the cool-
ing cycle.
∗
The Simplicity Elite control will declare an
“ECONOMIZER MINIMUM POSITION”
alarm and fl ash an Alarm Code 40.
– If the supply air temperature is not below the
“SUPPLY AIR TEMP ALARM SETPOINT
FOR COOLING”
.
∗
The Simplicity Elite control will declare a
“SUPPLY AIR TEMP ALARM SETPOINT
FOR COOLING”
alarm and flash an
Alarm Code 38.
– After the cooling cycle is completed, the Sim-
plicity Elite control sets the outdoor damper
to its minimum position.
– In order to reset the above alarms power to
the unit must be cycled on and off.
ALARM HISTORY
The last fi ve alarms can be view on the Simplicity Elite
control board as follows. The sequence below gives the
alarms from the most recent to the oldest.
Alarm 1 – The most recent alarm can be viewed
under Parameter 72 using the PROGRAM key on the
Simplicity Elite control board.
Alarm 2 – The next alarm in sequence can be viewed
under Parameter 73 using the PROGRAM key on the
Simplicity Elite control board.
Alarm 3 - The next alarm in sequence can be viewed
under Parameter 74 using the PROGRAM key on the
Simplicity Elite control board.
Alarm 4 - The next alarm in sequence can be viewed
under Parameter 75 using the PROGRAM key on the
Simplicity Elite control board.
Alarm 5 - The next alarm in sequence can be viewed
under Parameter 76 using the PROGRAM key on the
Simplicity Elite control board.
The above alarms can also be viewed using the
ALARMS tab in the Simplicity PC software program.
Summary of Contents for ECO2 YPAL 050
Page 62: ...62 JOHNSON CONTROLS FORM 100 50 NOM6 1207 THIS PAGE INTENTIONALLY LEFT BLANK...
Page 113: ...113 JOHNSON CONTROLS FORM 100 50 NOM6 1207 6 ECONOMIZER EXHAUST LD13018...
Page 114: ...114 JOHNSON CONTROLS FORM 100 50 NOM6 1207 User Interface Control Center FANS LD13019...
Page 115: ...115 JOHNSON CONTROLS FORM 100 50 NOM6 1207 6 COOLING SETUP LD13020...
Page 117: ...117 JOHNSON CONTROLS FORM 100 50 NOM6 1207 6 HEATING SETUP LD13022...
Page 119: ...119 JOHNSON CONTROLS FORM 100 50 NOM6 1207 6 SYSTEM OPTIONS LD13024...
Page 121: ...121 JOHNSON CONTROLS FORM 100 50 NOM6 1207 6 INPUTS COMFORT DEMAND VENTILATION LD13014 LD13026...
Page 125: ...125 JOHNSON CONTROLS FORM 100 50 NOM6 1207 6 ALARMS LD13031...
