Name: Bryant 549J Series
Brand: Bryant
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Table 23 – RTU Open Controller Inputs and Outputs

POINT NAME

BACnet OBJECT

NAME

TYPE OF I/O

CONNECTION

PIN NUMBER(S)

CHANNEL DESIGNATION

DEDICATED INPUTS

Space Temp / Zone Temp zone_temp AI (10K Thermistor) J 2 0 --- 1 a n d 2 Analo g Input 10

Supply Air Te mperature sa_temp AI (10K Thermistor) J 2 --- 1 a n d 2 Analog Input 6

Outside Air Temperature oa_temp AI (10K Thermi stor) J 2 --- 3 a n d 4 Analog Input 7

Space Temperature Offset Pot stpt_adj_offset AI (100K Poten tiom eter ) J 2 0 --- 3 a n d 4 Analog Input 11

Safety Chain Feedback safety_status BI (24 VAC) J 1 --- 9 Binary Input 4

Compressor Safety Status

(1)

comp_status BI (24 VAC) J 1 --- 2 Binary Input 3

Fire Shutdown Status firedown_status BI (24 VAC) J 1 --- 1 0 Binary Input 5

Enthalpy Status enthalpy_status BI (24 VAC) J 2 --- 6 a n d 7 Binary Input 8

Humidistat Input Status humstat_status BI (24 VAC) J 5 --- 7 a n d 8 Binary Input 9

Zone Temperature n/a n/a J 1 3 --- 1 --- 4 Rnet

CONFIGURABLE INPUTS

(4)

Indoor Air CO2 iaq A I ( 4 --- 2 0 m A )

J 4 --- 2 a n d 3 o r J 4 --- 5 a n d 6

Analog Input 2

Outdoor Air CO2 oaq A I ( 4 --- 2 0 m A ) Analog Input 1

Space Relative Humidity space_rh A I ( 4 --- 2 0 m A ) Analog Input 10

Supply Fan Status

(2)

sfan_status BI (24 VAC)

J 5 --- 1 a n d 2 o r J 5 --- 3 a n d 4,

J 5 --- 5 a n d 6 o r J 5 --- 7 a n d 8

(3)

BinaryInput3,5,8,or9,exceptwhereintrinsicinputisused

Filter Status

(2)

filter_status BI (24 VAC) BinaryInput3,5,8,or9,exceptwhereintrinsicinputisused

Door Contact

(2)

door_contact_status BI (24 VAC) BinaryInput3,5,8,or9,exceptwhereintrinsicinputisused

Remote Occupancy input

(2)

occ_contact_status BI (24 VAC) BinaryInput3,5,8,or9,exceptwhereintrinsicinputisused

IGC input

(2)

igcovr_status BI (24 VAC) Binary Input 9. Mandatory input on gas heat units.

OUTPUTS

Economizer Output econ_output AO (4--- 20mA) J 2 --- 5 Analog Output 1

Supply Fan VFD vfd_output A O ( 2 --- 1 0 V d c ) J 2 2 --- 1 a n d 2 Analog Output 2

Supply Fan R e l a y sfan BO Relay (24VAC, 1A) J 1 --- 4 Binary Output 1 (G)

Cool 1 Relay State comp_1 BO Relay (24VAC, 1A) J 1 --- 8 Binary Output 5 (Y1)

Cool 2 Relay State comp_2 BO Relay (24VAC, 1A) J 1 --- 7 Binary Output 4 (Y2)

Cool 3 Relay State comp_3 BO Relay (24VAC, 1A) J 1 1 --- 5 a n d 6 Binary Output 7 (Y3)

Heat 1 Relay State heat_1 B O Relay (24VAC, 1A) J 1 --- 6 Binary Output 3 (W1)

Heat 2 Relay State heat_2 B O Relay (24VAC, 1A) J 1 --- 5 Binary Output 2 (W2)

Power Exhaust Relay State pe xh BO Rel ay (24VAC, 1A) J11---2and3(N.O.) Binary Output 8 (PE)

Dehumidification Relay de hum BO Relay (24VAC, 1A) J11---7and8(N.O.) Binary Output 6

LEGEND

AI --- A n a l o g I n p u t

AO --- A n a l o g O u t p u t

BI --- B i n a r y I n p u t

BO --- Binary Output

(1)

Safety Chain Feedback: 24Vac required at this terminal to provide “Run Enable” status. See Input/Output section fo r addi ti onal instructions.

(2)

These inputs are configurable. If installed, they take the place of the default input on the specific channel. See appropriate Input Configuration Section for wiring and setup instructions.

(3)

P a r a l l e l p i n s J 5 --- 1 = J 2 --- 6 , J 5 --- 3 = J 1 --- 1 0 , J 5 --- 5 = J 1 --- 2 a r e u s e d f o r f i e l d i n s t a l l a t i o n .

(4)

Refer to the input configuration and accessory sections of the RTU Open Multi ---Protocol Controller Controls, Start --- Up, Operation and Troubleshooting manual for more detail.