72
JOHNSON CONTROLS
FORM 100.50-NOM6 (1207)
Sequence of Operation
Cooling – Unoccupied Stand Alone
The Simplicity Control cannot operate unoccupied
cooling with this method of control.
Heating – Occupied Stand Alone
The following parameters must be programmed into
the Simplicity Control:
• “VAV OCCUPIED HEATING ENABLED”
– This must be turned on using Parameter 26
under the PROGRAM key on the Simplicity
control board or under the HEATING SETUP
tab in the Simplicity PC software package.
• “MORNING
WARM-UP/
VAV
RETURN
AIR
TEMP SETPOINT” – using Parameter 29 under
the PROGRAM key on the Simplicity control
board or under the HEATING SETUP tab in the
Simplicity PC software package.
• “VAV OCCUPIED HEATING SETPOINT” – us-
ing Parameter 27 under the PROGRAM key on
the Simplicity control board or under the HEAT-
ING SETUP tab in the Simplicity PC software
package.
• “SPACE SENSOR FAULT OVERRIDE EN-
ABLED” must be turned on – using Parameter
8 under the PROGRAM key on the Simplicity
control board or under the SYSTEMS OPTIONS
tab in the Simplicity PC software package.
The unit will initiate Occupied Heating when the
following criteria are met:
• The return air temperature is 2.0° F less than the
“VAV OCCUPIED HEATING SETPOINT”.
• The return air temperature is 0.1° F below the
“MORNING WARM UP / VAV RETURN AIR
TEMP SETPOINT”.
The “VAV OCCUPIED HEATING SETPOINT” should
always be set below the “MORNING WARM UP RAT
SETPOINT”.
The unit will terminate Occupied Heating when:
• The return air temperature is equal to the
“MORNING WARM UP RAT SETPOINT”.
Heating – Unoccupied Stand Alone
The Simplicity Control cannot operate unoccupied
heating with this method of control.
CONDENSER FAN OPERATION
A call for the operation of compressor 1A or 1B will
close an output at terminal CF1 of the P13 connector.
This 24 VAC output energizes the 6M contactor and
turns on condenser fan 1. This 24 VAC output is also
sent to pressure switch PS3. If the discharge pressure
rises above 360 psig the PS3 switch closes and energizes
the 7M contactor. The 7M contactor then energizes
condenser fan 2. If the discharge pressure decreases
below 300 psig the PS3 switch opens and de-energizes
condenser fan 2.
A call for the operation of compressor 2A or 2B will
close an output at terminal CF2 of the P13 connector.
This 24 VAC output energizes the 8M contactor and
turns on condenser fan 3. This 24 VAC output is also
sent to pressure switch PS4. If the discharge pressure
rises above 360 psig the PS4 switch closes and energizes
the 9M contactor. The 9M contactor then energizes
condenser fan 4. If the discharge pressure decreases
below 300 psig the PS4 switch opens and de-energizes
condenser fan 4.
COOLING COMPRESSOR LOCKOUT
This feature prevents operation of mechanical cooling
when the outdoor temperature is below this set point.
•
“OUTDOOR AIR TEMP COOLING LOCKOUT”
- this parameter can be set using the COOLING
SETUP tab in the Simplicity PC software pack-
age.
This parameter should never be programmed
less then 45.0º F
Sequence of Operation
•
If the outdoor temperature is 1.0º F below the
“OUTDOOR AIR TEMP COOLING LOCK-
OUT”
the Simplicity Elite control will prevent
compressor operation.
•
When the outdoor temperature is 1.0º F above
the
“OUTDOOR AIR TEMP COOLING LOCK-
OUT”
compressor operation will be permitted.
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...