Trane BAYECON353 Series - Sequence of Operation

Economizer Controller
18 ACC-SVN203C-EN
Sequence of Operation
Table 5. Dry bulb 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 6. Dry bulb operation with DCV (CO
2
sensor) - 1 speed fan
DCV
OA Good to
economize? Y1-I FAN SPD Y1-O Occupied Unoccupied
Below CO
2
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 CO
2
set
No
Off High 0-v/Off VENTMIN to VENTMAX Closed
On High 24-v/On VENTMIN to VENTMAX Closed
Yes
Off High 0-v/Off VENTMIN to VENTMAX 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
ALARMS(_)
(e)
MAT SENS ERR N/A N/A N/A
CO
2
SENS ERR(c) N/A N/A N/A
OAT SENS ERR(c) N/A N/A N/A
DA ENTHL ERR N/A N/A N/A DA ENTHL ERR is not available
SYS ALARM N/A N/A N/A
When AUX1-O is set to SYS and there is any alarm
the AUX1-O term
inal has 24 Vac out
ACT UNDER V(c) N/A N/A N/A
Voltage received by Actuator is above expected
range
ACT OV
ER V(c) N/A N/A N/A
Voltage received by Actuator is below expected
range
AC
T STALLED(c) N/A N/A N/A
Actuator stopped before achieving commanded
positio
n
(a) When values are displayed, pressing and holding the Up or Down button causes the display to automatically increment.
(b) N/A = Not Applicable
(c) This parameter is directly associated with the LLE economizer.
(d) The Honeywell communicating actuator will report in XX.X% ope
n versus XX.X Vdc for damper out.
(e) Alarms display only when they are active. The menu title “ALARMS (_)” includes the number of active alarms in parenthesis ().
Table 4. Controller menu structure (continued)
Menu Parameter
Parameter
Default
Value
Parameter
Range and
Increment
(a)
Parameter
Recommended
Value
(b)
Notes