Carrier WeatherExpert 50LC14, Installation Instructions Manual, Page: 50 / 84

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Table 7 — W7220 Menu Structure* (cont)
MENU PARAMETER
PARAMETER
DEFAULT
VALUE
PARAMETER
RANGE AND
INCREMENT †
NOTES
SYSTEM SETUP
INSTALL 01/01/10 N/A Display order = MM/DD/YY
Setting order = DD, MM, then YY
UNITS DEG °F °F or °C Sets economizer controller in degrees Fahrenheit or Celsius
EQUIPMENT CONV Conventional or HP CONV = conventional;
HP O/B = Enable Heat Pump mode. Not available with 2-speed.
See Note 4.
AUX2 I W W required for 2-
speed mode
W = Informs controller that system is in heating mode.
SD = Enables configuration of shutdown (not available on 2-speed).
See Note 4.
FAN TYPE 2 speed 2 speed required Sets the economizer controller for operation of 1 speed or 2 speed sin-
door fan system. See Note 4.
FAN CFM 5000cfm 100 to 15000 cfm;
increment by 100
UNIT DESIGN AIRFLOW (CFM)
Enter only if using DCVAL ENA = AUTO
The value is found Project Submittal documents for the specific unit.
AUX OUT NONE NONE
EXH2
SYS
Select OUTPUT for AUX1 O relay
• NONE = not configured (output is not used)
• EXH2 = second damper position relay closure for second exhaust fan
• SYS = use output as an alarm signal
OCC INPUT INPUT or ALWAYS OCCUPIED MODE BY EXTERNAL SIGNAL
When using a setback thermostat with occupancy out (24 vac), the 24 vac
is input to the OCC terminal. RTU control circuit provides 24-Vac to OCC
through OCCUPIED terminals on Integrated Staging Control Board.
FACTORY DEFAULT NO NO or YES Resets all set points to factory defaults when set to YES. LCD will briefly
flash YES and change to NO but all parameters will change to the factory
default values.
NOTE: RECHECK AUX2 IN and FANTYPE for required 2-speed values.
ADVANCED
SETUP
MA LO SET 45 ° F
(7°C)
35 to 55 ° F
(2 to 12°C);
Incremented by 1 °
SUPPLY AIR TEMPERATURE LOW LIMIT
Temperature to achieve Freeze Protection (close damper and alarm if
temperature falls below setup value).
FREEZE POS CLO CLO or MIN FREEZE PROTECTION DAMPER POSITION
Damper position when freeze protection is active.
CLO = closed
MIN = MIN POS or VENT MAX
CO2 ZERO 0ppm 0 to 500 ppm;
Increment by 10
CO
2
ppm level to match CO
2
sensor start level.
CO2 SPAN 2000ppm 1000 to 3000 ppm;
Increment by 50
CO
2
ppm span to match CO
2
sensor.
STG3 DLY 2.0h 0 min, 5 min, 15 min,
then 15 min intervals.
Up to 4 hrs or OFF
COOLING STAGE 3 DELAY
Delay after stage 2 cool has been active. Turns on second stage of cool-
ing when economizer is first stage and mechanical cooling is second
stage.
SD DMPR POS CLO CLO or OPN Function not available with 2-speed mode.
DCVCAL ENA MAN MAN (manual) Turns on the DCV automatic control of the dampers. Resets ventilation.
MAT T CAL 0.0 ° F (or C) ±2.5°F (±1.4°C) SUPPLY AIR TEMPERATURE CALIBRATION
Allows for the operator to adjust for an out of calibration supply air tem-
perature (SAT) sensor.
OA T CAL 1.0 ° F (or C) ±2.5°F (±1.4°C) OUTSIDE AIR TEMPERATURE CALIBRATION
Allows for the operator to adjust for an out of calibration outside aire tem-
perature (OAT) sensor.
OA H CAL 0% RH ±10% RH OUTSIDE AIR HUMIDITY CALIBRATION
Allows for operator to adjust for an out of calibration enthalpy sensor.
RA T CAL 2.0
°
F (or C) ±2.5°F (±1.4°C) RETURN AIR TEMPERATURE CALIBRATION
Allows for the operator to adjust for an out of calibration return air tem-
perature (RAT) sensor.
RA H CAL 0% RH ±10% RH RETURN AIR HUMIDITY CALIBRATION
Allows for operator to adjust for an out of calibration return air enthalpy
sensor.
DA T CAL 0.0
°
F (or C) ±2.5°F (±1.4°C) DISCHARGE AIR TEMPERATURE CALIBRATION
Allows for the operator to adjust for an out of calibration discharge air
(DAT) temperature sensor.
2SP FAN DELAY 5 Minutes 0 to 20 minutes in 1
minute increments
TIME DELAY ON 2nd STAGE ECONOMIZING
When in economizing mode, this is the delay between thermostat Y2
call and Y1-O output to mechanical cooling stage, to allow high speed fan
operation to attempt to cool space first.