Bryant 549J Series, Installation Instructions Manual

Page: 33 / 52

33
Table 13 – Damper Minimum Position Settings and Readings on Checkout Menu
Fan Speed
Demand Controlled Ventilation
(CO
2
Sensor)
Setpoints Checkout
1 NO MIN POS VMAX---HS
1 NO N/A N/A
2 NO MIN POS H VMAX---HS
2 NO MIN POS L VMAX---LS
1 YES VENT MIN VMIN---HS
1 YES VENT MAX VMAX---HS
2 YES VENT MIN H VMIN---HS
2 YES VENT MAX H VMAX---LS
2 YES VENT MIN L N/A
2 YES VENT MAX L N/A
Sequence of Operation
Table 14 – Dry Bulb Operation No DCV (CO
2
Sensor) -- 1 Speed Fan
Demand
Controlled
Ventilation
(DCV)
Outside Air ---
Good to
economize?
Y1
‐
I Y2-I Fan Speed Y1-O Y2-O Occupied Unoccupied
None No
Off Off High 0-v/Off 0-v/Off MIN POS Closed
On Off High 24-v/On 0-v/Off MIN POS Closed
On On High 24-v/On 24-v/On MIN POS Closed
None Yes
Off Off High 0-v/Off 0-v/Off MIN POS Closed
On Off High 0-v/Off 0-v/Off MIN POS to Full-Open Closed to Full-Open
On On High 24-v/On 0-v/Off * MIN POS to Full-Open Closed to Full-Open
*
With stage 3 delay (STG3 DLY) in Advanced setup menu can turn on second stage of mechanical cooling Y2 –O after the delay if the call for Y1---I and Y2---I
have not been satisfied.
Table 15 – Dry Bulb Operation With DCV (CO
2
Sensor) -- 1 Speed Fan
Demand
Controlled
Ventilation
(DCV)
Outside Air ---
Good to
economize?
Y1
‐
I Y2-I Fan Speed Y1-O Y2-O Occupied Unoccupied
Below CO
2
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* VENTMIN to Full-Open Closed to Full-Open
Above CO
2
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 to VENTMAX Closed
On On High 24-v/On 24-v/On VENTMIN to VENTMAX Closed
Yes
Off Off High 0-v/Off 0-v/Off VENTMIN to VENTMAX 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* VENTMIN to Full-Open Closed to Full-Open
*
With stage 3 delay (STG3 DLY) in Advanced setup menu can turn on second stage of mechanical cooling Y2 –O after the delay if the call for Y1---I and Y2---I
have not been satisfied.