Carrier WeatherExpert 50LC14 - Page 64

64
Menu 2: Advanced Setup
PARAMETER
PROJECT
VALUE
PARAMETER
DEFAULT
VALUE
PARAMETER
RANGE AND
INCREMENT
NOTES
MA LO SET 45°F (7°C) 35 to 55°F (2 to 13°C);
incremented by 1°
SUPPLY AIR TEMPERATURE LOW LIMIT
Temperature to achieve Freeze Protection (close damper and
alarm if temperature at SAT location 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 VENTMAX
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 h
or OFF
COOLING STAGE 3 DELAY
Delay after stage 2 for cool has been active. Turns on second
stage of cooling when economizer is first stage and mechanical
cooling is second.
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 1.
0°F (or °C) ± 2.5°F (± 1.4°C) SUPPLY AIR TEMPERATURE CALIBRATION
Allows the operator to adjust for an out of calibration supply air
temperature (SAT) sensor.
OA T CAL 2.0 3.0°F (or °C) ± 2.5°F (± 1.4°C) OUTSIDE AIR TEMPERATURE CALIBRATION
Allows the operator to adjust for an out of calibration outside air
temperature (OAT) sensor
OA H CAL 0% RH ±
10% RH OUTSIDE AIR HUMIDITY CALIBRATION
Allows the operator to adjust for an out of calibration of outside
air enthalpy sensor
RA T CAL 4.0 5.0°F (or °C) ± 2.5°F (± 1.4°C) RETURN AIR TEMPERATURE CALIBRATION
Allows the operator to adjust for an out of calibration return air
temperature (RA) sensor
RA H CAL 0% RH ± 10% RH RETURN AIR HUMIDITY CALIBRATION
Allows the operator to adjust for an out of calibration return air
enthalpy sensor
DA T CAL 0.0 1.
0°F (or °C) ± 2.5°F (± 1.4°C) DISCHARGE AIR TEMPERATURE CALIBRATION
Allows the operator to adjust for an out of calibration discharge
air temperature (DAT) sensor
2SP FAN DELAY 5 minutes 0 to 20 minutes in
1 minute increments
TIME DELAY ON SECOND STAGE ECONOMIZING
While in the Economizing mode, this is the delay between ther-
mostat Y2 call and Y1-O output to mechanical cooling stage, to
allow high speed fan operation to attempt to cool space first.