Bryant 549J Series User Manual

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Table 13 – Damper Mi nimum Position Settings and Readings on Checkout Menu
Fan Speed
Demand Controlled Ventilation
(CO
2
Sensor)
Setpoints Checkout
1 NO MIN POS V M A X --- H S
1 NO N/A N/A
2 NO MIN POS H V M A X --- H S
2 NO MIN POS L V M AX --- L S
1 YES VENT MIN V M I N --- HS
1 YES VENT MAX V M A X --- H S
2 YES VENT MIN H V M I N --- H S
2 YES VENT MAX H V M A X --- L S
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 Ye s
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 VE NTMIN Closed
On Off High 24-v/On 0-v/Off VE NTMIN Closed
On On High 24-v/On 24-v/On VENTMIN Closed
Ye s
Off Off High 0-v/Off 0-v/Off VE NTMIN Closed
On Off High 0-v/Off 0-v/Off VENTMIN to Full-Open Closed to Fu ll-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 VE NTMIN to VENTMAX Closed
On Off High 24-v/On 0-v/Off VE NTMIN to VENTMAX Closed
On On High 24-v/On 24-v/On VENTMIN to VENTMAX Closed
Ye s
Off Off High 0-v/Off 0-v/Off VE NTMIN to VENTMAX Closed
On Off High 0-v/Off 0-v/Off VENTMIN to Full-Open Closed to Fu ll-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.

Bryant 549J Series Specifications

General

Brand	Bryant
Model	549J Series
Category	Heat Pump
Language	English