Honeywell Design and Application User Manual

Section 11 - W7220 JADE™ Economizer Module
63-8594-02 Honeywell Economizers 124
Table 7. Enthalpy Operation With DCV (CO
2
sensor) - 1 Speed Fan.
a
With stage 3 delay (STG3 DLY) in Advanced setup menu can turn on 2nd stage of mechanical cooling Y2 –O after
the delay if the call for Y1-I and Y2-I have not been satisfied.
b
With 2SP FAN DELAY (Advanced Setup Menu) when in the economizing mode there is a delay for the high speed
fan to try to satisfy the call for second stage cooling by turning on the fan to high and opening the OA damper
100% before the first stage mechanical cooling is enabled.
Table 8. Dry Bulb Operation No DCV (CO
2
sensor) - 2 Speed Fan.
a
With stage 3 delay (STG3 DLY) in Advanced setup menu can turn on 2nd stage of mechanical cooling Y2 –O after
the delay if the call for Y1-I and Y2-I have not been satisfied.
b
With 2SP FAN DELAY (Advanced Setup Menu) when in the economizing mode there is a delay for the high speed
fan to try to satisfy the call for second stage cooling by turning on the fan to high and opening the OA damper
100% before the first stage mechanical cooling is enabled.
DCV
OA Good to
economize? Y1-I Y2-I FAN SPD Y1-O Y2-O Occupied Unoccupied
Below
set
No Off Off High 0-v/Off 0-v/Off VENTMIN Closed
On Off High 24-v/On 0-v/Off VENTMIN Closed
On On High 24-v/On 24-v/On VENTMIN Closed
Yes Off Off High 0-v/Off 0-v/Off VENTMIN Closed
On Off High 0-v/Off 0-v/Off VENTMIN to Full-
Open
Closed to Full-Open
On On High 24-v/On
0-v/Off
a
VENTMIN to Full-
Open
Closed to Full-Open
Above
set
No Off Off High 0-v/Off 0-v/Off VENTMIN to
VENTMAX
Closed
On Off High 24-v/On 0-v/Off VENTMIN L to
VENTMAX
Closed
On On High 24-v/On 24-v/On VENTMIN H to
VENTMAX
Closed
Yes Off Off High 0-v/Off 0-v/Off VENTMIN L to
VENTMAX
Closed
On Off High 0-v/Off 0-v/Off VENTMIN to Full-
Open
Closed to Full-Open
On On High
DELAY
b
24-v/On
0-v/Off
a
VENTMIN to Full-
Open
Closed to Full-Open
DCV
OA Good to
economize? Y1-I Y2-I FAN SPD Y1-O Y2-O Occupied Unoccupied
None No Off Off Low 0-v/Off 0-v/Off MIN POS L Closed
On Off Low 24-v/On 0-v/Off MIN POS L Closed
On On High 24-v/On 24-v/On MIN POS H Closed
None Yes Off Off Low 0-v/Off 0-v/Off MIN POS L Closed
On Off Low 0-v/Off 0-v/Off MIN POS L to
Full-Open
Closed to Full-Open
On On High
DELAY
b
24-v/On
0-v/Off
a
MIN POS H to
Full-Open
Closed to Full-Open

Honeywell Design and Application Specifications

General

Brand	Honeywell
Model	Design and Application
Category	Controller
Language	English