Jade Range W7220 - Manual (Page 19)

JADE ™ ECONOMIZER MODULE
19 62-0331—11
Table 12. Enthalpy Operation With DCV (CO2 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.
TROUBLESHOOTING
Alarms
The Economizer module provides alarm messages that
display on the 2-line LCD.
NOTE: Upon power up, the module waits 60 minutes
before checking for alarms. This allows time for
all the configured devices (e.g. sensors, actua-
tor) to become operational. The exception is the
MA sensor which will alarm immediately. If one or
more alarms are present and there has been no
keypad activity for at least 5 minutes, the Alarms
menu displays and cycles through the active
alarms.
You can also navigate to the Alarms menu at any time.
DCV
OA Good to
economize? Y1-I Y2-I FAN SPD Y1-O Y2-O Occupied Unoccupied
Below set No Off Off Low 0-v/Off 0-v/Off VENTMIN L Closed
On Off Low 24-v/On 0-v/Off VENTMIN L Closed
On On High 24-v/On 24-v/On VENTMIN H Closed
Yes Off Off Low 0-v/Off 0-v/Off VENTMIN L Closed
On Off Low 0-v/Off 0-v/Off VENTMIN L to Full-
Open
Closed to Full-Open
On On High 24-v/On
0-v/Off a VENTMIN H to Full-
Open
Closed to Full-Open
Above set No Off Off Low 0-v/Off 0-v/Off VENTMIN L to
VENTMAX
Closed
On Off Low 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 Low 0-v/Off 0-v/Off VENTMIN L to
VENTMAX
Closed
On Off Low 0-v/Off 0-v/Off VENTMIN L to Full-
Open
Closed to Full-Open
On On High DELAY b
24-v/On
0-v/Off a VENTMIN H to Full-
Open
Closed to Full-Open
Table 13. Alarms Menu.
Menu Alarm
ALARMS(_) MA T SENS ERR
CO2 SENS ERR
OA T SENS ERR
DA ENTHL ERR
SYS ALARM a
a When AUX1 O is set to SYS and there is any alarm (e.g.,
failed sensors, etc.), the AUX1 O terminal has 24 Vac out
and the LCD displays the ALARM.
b This alarm is only displayed when a communicating actuator
is used. (ex: MS3105AJ)
ACT Over Voltage b
ACT Under Voltage b
ACT Stalled b
NOTES:
1. The Alarms menu displays only when alarm(s)
are active and includes the number of active
alarms in parenthesis ().
2. The alarms listed are a few examples. Additional
alarms display depending on the parameter set-
tings and configuration.