Bryant LEGACY 580J*20M Series, Installation Instructions Manual

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NOTE: Some parameters in the menus use the letters MA or
MAT, indicating a mixed air temperature sensor location before
the cooling coil. This unit application has the control sensor
located after the cooling coil, in the fan section, where it is des-
ignated as (Cooling) Supply Air Temperature or SAT sensor.
SETUP AND CONFIGURATION — Before being placed
into service, the W7220 Economizer module must be setup and
configured for the installed system.
The setup process uses a hierarchical menu structure that is
easy to use. You press the and arrow buttons to move forward
and backward through the menus and press the button to select
and confirm setup item changes.
TIME-OUT AND SCREENSAVER — When no buttons
have been pressed for 10 minutes, the LCD displays a screen
saver, which cycles through the Status items. Each Status items
displays in turn and cycles to the next item after 5 seconds.
Table 10 — Menu Structure
IMPORTANT: Table 10 illustrates the complete hierar-
chy. Your menu parameters may be different depending
on your configuration.
For example if you do not have a DCV (CO
2
) sensor,
then none of the DCV parameters appear and only MIN
POS will display. If you have a CO
2
sensor, the DCV MIN
and DCV MAX will appear AND if you have 2 speed fan
DCV MIN (high and low speed) and DCV MAX (high
and low speed will appear).
IMPORTANT: During setup, the economizer module is
live at all times.
MENU PARAMETER
PARAMETER
DEFAULT
VALUE
PARAMETER
RANGE AND
INCREMENT
NOTES
STATUS
ECONO AVAIL NO YES/NO
FIRST STAGE COOLING DEMAND (Y1–IN)
YES = economizing available; the system can use outside air for free
cooling when required
ECONOMIZING NO YES/NO
FIRST STAGE COOLING RELAY OUTPUT
YES = outside air being used for 1 stage cooling
OCCUPIED NO YES/NO
OCCUPIED
YES = OCC signal received from space thermostat or unitary controller
YES = 24 Vac on terminal OCC
NO = 0 Vac on terminal OCC
HEAT PUMP N/A
COOL
HEAT
HEAT PUMP MODE
Displays COOL or HEAT when system is set to heat pump
(Non-conventional)
COOL Y1—IN OFF ON/OFF
FIRST STAGE COOLING DEMAND (Y1–IN)
Y1–I signal from space thermostat or unitary controller for cooling stage
1.
ON = 24 Vac on terminal Y1–I
OFF = 0 Vac on terminal Y1–I
COOL Y1—OUT OFF ON/OFF
FIRST STAGE COOLING RELAY OUTPUT
Cool stage 1 Relay Output to stage 1 mechanical cooling
(Y1–OUT terminal)
COOL Y2—IN OFF ON/OFF
SECOND STAGE COOLING DEMAND (Y2–IN)
Y2–I signal from space thermostat or unitary controller for second stage
cooling.
ON = 24 Vac on terminal Y2–I
OFF = 0 Vac on terminal Y2–I
COOL Y2—OUT OFF ON/OFF
SECOND STAGE COOLING RELAY OUTPUT
Cool Stage 2 Relay Output to mechanical cooling
(Y2–OUT terminal)
MA TEMP _ _ . _ F 0 to 140 F
SUPPLY AIR TEMPERATURE, Cooling Mode
Displays value of measured mixed air from MAT sensor.
Displays _ _ . _ F if not connected, short or out-of-range.
DA TEMP _ _ . _ F 0 to 140 F
DISCHARGE AIR TEMPERATURE, after Heating section
Displays when Discharge Air sensor is connected and displays mea-
sured discharge temperature.
Displays _ _ . _F if sensor sends invalid value, if not connected, short or
out-of-range.
OA TEMP _ _ . _ F -40 to 140 F
OUTSIDE AIR TEMP
Displays measured value of outdoor air temperature.
Displays _ _ . _F if sensor sends invalid value, short or
out-of-range.
OA HUM _ _ % 0 to 100%
OUTSIDE AIR RELATIVE HUMIDITY
Displays measured value of outdoor humidity from OA sensor.
Displays _ _% if not connected short, or out-of-range.
RA TEMP _ _ . _ F 0 to 140 F
RETURN AIR TEMPERATURE
Displays measured value of return air temperature from RAT sensor.
Displays _ _ . _ F if sensor sends invalid value, if not connected, short or
out-of-range
RA HUM _ _ % 0 to 100%
RETURN AIR RELATIVE HUMIDITY
Displays measured value of return air humidity from RA sensor.
Displays _ _% if sensor sends invalid value, if not connected, short or
out-of-range
IN CO2 _ _ _ ppm 0 to 2000 ppm
SPACE/RETURN AIR CO2
Displays value of measured CO
2
from CO
2
sensor. Invalid if not con-
nected, short or out-of-range
DCV STATUS N/A ON/OFF
DEMAND CONTROLLED VENTILATION STATUS
Displays ON if above setpoint and OFF if below setpoint, and ONLY if a
CO
2
sensor is connected.
DAMPER OUT 2.0v 2.0 to 10.0v Displays voltage output to the damper actuator.
ACT POS N/A 0 to 100% Displays actual position of outdoor air damper actuator