Carrier 50LC 07, Service And Maintenance Instructions, Page: 43 / 100

43
Table 9 -- Menu Structure
a
(cont)
Menu Parameter
Parameter
Default
Value
Parameter
Range and Increment
b
EXPANDED PARAMETER NAME
Notes
SYSTEM
SETUP
INSTALL 01/01/10 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 Menu 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 Menu Note 4
FAN TYPE 2speed 2speed required Sets the economizer controller for operation of 1 speed or 2 speed indoor
fan system.
See Menu Note 4.
FAN CFM 5000cfm 100 to 15000 cfm;
increment by 100
UNIT DESIGN AIRFLOW (CFM)
Enter ONLY of using DCVCAL ENA = AUTO
The value is found in the Project Submittal documents for the specific RTU.
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.
See Menu Note 2.
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.
RECHECK AUX2 I 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 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 2
nd
stage of cooling
when economizer is 1
st
stage and mechanical cooling is 2
nd
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.
MATTCAL 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
temperature (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 air
temperature (OAT) sensor
OA H CAL 0% RH +/---10% RH OURTSIDE AIR HUMIDITY CALIBRATION
Allows for the operator to adjust for an out of outside air 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
temperature (RA) sensor
RA H CAL 0% RH +/---10% RH RETURN AIR HUMIDITY CALIBRATION
Allows for the 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
temperature (DAT) sensor
2SP FAN DELAY 5 Minutes 0 to 20 minutes in
1 minute increments
TIME DELAY ON 2
nd
STAGE ECONOMIZING
While in the 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.