JOHNSON CONTROLS
18
FORM 100.50-SU3 (1207)
ECONOMIZER –VARIABLE AIR VOLUME – DUAL
ENTHALPY
“DUCT PRESSURE SETPOINT”
– Must be set
using Parameter 30 under the PROGRAM key on the
Simplicity control board or under the FAN tab in the
Simplicity PC software package. Settable between 0.0
and 5.0 INWC. The default value is 1.5 INWC.
“DUCT PRESSURE SHUTDOWN SETPOINT”
– Must
be set under the FAN tab in the Simplicity PC software
package. Settable between 0.0 and 5.0 INWC. The
default value is 4.5 INWC.
“OUTSIDE AIR HUMIDITY SENSOR INSTALLED”
– must be turned ON using Parameter 36 under the
PROGRAM key on the Simplicity control board or
under the ECONOMIZER/EXHAUST tab in the
Simplicity PC software.
“RETURN AIR HUMIDITY SENSOR INSTALLED”
– must be turned ON using Parameter 38 under the
PROGRAM key on the Simplicity control board or
under the ECONOMIZER/EXHAUST tab in the
Simplicity PC software.
“DIFFERENTIAL ENTHALPY MODE ENABLED”
– must be turned ON under the ECONOMIZER/
EXHAUST tab in the Simplicity PC software.
ECONOMIZER LOADING
Field Wiring
No additional connections required.
Misc. Connections
No additional connections required.
Programming
“ECONOMIZER LOADING ENABLE”
– must be
turned ON under the COOLING SETUP tab in the
Simplicity PC software.
“SUPPLY AIR TEMP LIMIT FOR COOLING”
– must
be turned ON under the COOLING SETUP tab in the
Simplicity PC software.
“SUPPLY AIR TEMP LIMIT COOLING SETPOINT”
– must be programmed under the COOLING SETUP
tab in the Simplicity PC software. The default valve
is 50.0º F.
BAS ECONOMIZER
Field Wiring
Connect an external 2-10 VDC source to terminals BAS
ECON + and BAS ECON – on the Simplicity control
board
(see Appendix 1).
Misc. Connections
No additional connections required.
Programming
“ECONOMIZER INSTALLED”
– must be turned OFF
using Parameter 32 under the PROGRAM key on the
Simplicity control board or under the ECONOMIZER/
EXHAUST tab in the Simplicity PC software.
“OUTSIDE AIR HUMIDITY SENSOR INSTALLED”
– must be turned OFF using Parameter 36 under the
PROGRAM key on the Simplicity control board or
under the ECONOMIZER/EXHAUST tab in the
Simplicity PC software.
“RETURN AIR HUMIDITY SENSOR INSTALLED”
– must be turned OFF using Parameter 38 under the
PROGRAM key on the Simplicity control board or
under the ECONOMIZER/EXHAUST tab in the
Simplicity PC software.
“THIRD PART BAS ECONOMIZER INSTALLED”
– must be turned ON using Parameter 58 under the
PROGRAM key on the Simplicity control board or
under the EQUIPMENT INSTALLATION tab in the
Simplicity PC software.
