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Bryant 548J User Manual

Page 61

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61

Inputs
NOTE
:

For installation of inputs and field installed

accessories, refer to the appropriate sections.
Input 3
This input is a discrete input and can be configured to be

one of five different inputs: No Function, Compressor

Safety, Fan Status, Filter Status, or Remote Occupancy.

This input can also be configured to be either Normally

Open (N/O) or Normally Closed (N/C). Input 3 is factory

wired to pin J1--2. Field accessories get wired to its

parallel pin J5--5. Do not connect inputs to both locations,

one function per input.

Factory Default = Compressor Safety and N/O

NOTE: Compressor Safety input comes from the CLO

board. J1--2 is always factory wired to TB1--8 (X) terminal
on the unit. If the unit has a CLO board, do not configure
input 3 for anything but Compressor Safety.
Input 5
This input is a discrete input and can be configured to be

one of five different inputs: No Function, Fire Shutdown,

Fan Status, Filter Status, or Remote Occupancy. This

input can also be configured to be either Normally Open

(N/O) or Normally Closed (N/C). Input 5 is factory wired

to pin J1--10. Field accessories get wired to its parallel pin

J5--3. Do not connect inputs to both locations, one

function per input.

Factory Default = Fire Shutdown and N/C

NOTE: Fire Shutdown input comes from TB4--7. J1--10
is always factory wired to TB4--7. Only change input 5s

function if absolutely needed.
Input 8
This input is a discrete input and can be configured to be

one of five different inputs: No Function, Enthalpy

Switch, Fan Status, Filter Status, or Remote Occupancy.

This input can also be configured to be either Normally

Open (N/O) or Normally Closed (N/C). Input 8 is factory

wired to pin J2--6. Field accessories get wired to its

parallel pin J5--1. Do not connect inputs to both locations,

one function per input.

Factory Default = No Function and N/O

Input 9
This input is a discrete input and can be configured to be

one of five different inputs: No Function, Humidistat, Fan

Status, Filter Status, or Remote Occupancy. This input can

also be configured to be either Normally Open (N/O) or

Normally Closed (N/C). Input 9 is factory and field wired

to pin J5--7. Do not connect inputs to both locations, one

function per input.

Factory Default = Humidistat and N/O

Space Sensor Type
This tells the controller what type of space sensor is

installed to run the unit. The three types that can be used

are the T55 space sensor, the T56 space sensor, or the RS

space sensor.

Factory Default = T55 Type

Input 1 Function
This input is an analog input and can be configured to be

one of five different inputs: No Sensor, IAQ Sensor, OAQ

Sensor, Space RH Sensor, or Outdoor RH Sensor. Input 1

is wired to pin J4--5.

Factory Default = No Sensor

Input 2 Function
This input is an analog input and can be configured to be

one of five different inputs: No Sensor, IAQ Sensor, OAQ

Sensor, Space RH Sensor, or Outdoor RH Sensor. Input 2

is wired to pin J4--2.

Factory Default = No Sensor

Setpoint Slider Range
This sets the slider range of the space sensor (with this

built in function). The slider is used to offset the current

control setpoint.

Factory Default = 5 n_F

Range = 0--15 n_F

T55/56 Override Duration
This sets the occupancy override duration when the

override button is pushed on the space sensor.

Factory Default = 1 hr

Range = 0--24 hr

IAQ Low Reference @ 4mA
This is used when an IAQ sensor is installed on Input 1 or

2. This value is displayed and used when 4mA is seen at

the input.

Factory Default = 0 PPM

Range = 0--400 PPM

IAQ High Reference @ 20mA
This is used when an IAQ sensor is installed on Input 1 or

2. This value is displayed and used when 20mA is seen at

the input.

Factory Default = 2000 PPM

Range = 0--5000 PPM

NOTE: IAQ low Reference @ 4mA and IAQ High
Reference @ 20mA are used to set the linear curve of mA

vs. PPM.
OAQ Low Reference @ 4mA
This is used when an OAQ sensor is installed on Input 1

or 2. This value is displayed and used when 4mA is seen

at the input.

Factory Default = 0 PPM

Range = 0--400 PPM

OAQ High Reference @ 20mA
This is used when an OAQ sensor is installed on Input 1

or 2. This value is displayed and used when 20mA is seen

at the input.

Factory Default = 2000 PPM

Range = 0--5000 PPM

NOTE: OAQ low Reference @ 4mA and OAQ High
Reference @ 20mA are used to set the linear curve of mA
vs. PPM.

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