Table 7. Enthalpy operation no DCV (CO
2
sensor) - 1 speed fan
DCV
OA Good to
economize? Y1-I FAN SPD Y1-O Occupied Unoccupied
None No
Off High 0-v/Off MIN POS Closed
On High 24-v/On MIN POS Closed
None Yes
Off High 0-v/Off MIN POS Closed
On High 0-v/Off MIN POS to Full- Open Closed to Full-Open
On High 24-v/On MIN POS to Full- Open Closed to Full-Open
Table 8. Enthalpy operation with DCV (CO
2
sensor) - 1 speed fan
DCV
OA Good to
economize? Y1-I FAN SPD Y1-O Occupied Unoccupied
Below set
No
Off High 0-v/Off VENTMIN Closed
On High 24-v/On VENTMIN Closed
Yes
Off High 0-v/Off VENTMIN Closed
On High 0-v/Off VENTMIN to Full- Open Closed to Full-Open
On High 24-v/On VENTMIN to Full- Open Closed to Full-Open
Above set
No
Off High 0-v/Off VENTMIN to VENTMAX Closed
On High 24-v/On VENTMIN L to VENTMAX Closed
Yes
Off High 0-v/Off VENTMIN L to VENTMAX Closed
On High 0-v/Off VENTMIN to Full- Open Closed to Full-Open
On High DELAY 24-v/On VENTMIN to Full- Open Closed to Full-Open
Economizer Controller
ACC-SVN203C-EN 19
Initiation of Operating Modes
The JADE controller is able to initiate the following modes:
Compressor, Economizer, Fans, Heating System, and
Cooling System.
The Compressor mode is initiated by either the OAT going
above the
DRYBLB SET setting or by the
thermostat
initiating a call to cool when the damper is at 100% open.
The Economizer mode is controlled by the MAT getting
above the MAT SET setting while the OAT is below the
DRYBLB SET setting. While the fans are not controlled by
the controller, the Fan mode is dependent on what state
the system is in (OCC or Y1 states will cause the damper to
go to a LOW fan speed damper setting, while W state will
cause the controller to open the damper to the HIGH fan
speed damper setting). The Heating System mode
requires an input to the AUX2-1 terminal from the
thermostat, and the Cooling System mode requires an
input to the Y1 IN terminals from the thermostat.
Economizer Setup and
Configuration (Field and Factory
Installed Option)
Before being placed into service the controller must be
setup and configured for the installed system.
Important: During
setup, the economizer controller is
live at all times.
1. Using the keypad on the controller scroll through the
Set
points,
System Setup, and Advanced Setup menus
and verify or set/change the parameters. See Table 4,
p. 14.
2. Install front filter access panel back on to unit and
sec
ure with
previous screws.
Notes:
• The W (heating mode) is not controlled by the
controller but it requires the status to know where to
position the outside air damper for minimum position
for the fan speed.
• All setpoints and advanced settings are restored
after
any power loss or interruption.
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