Carrier WeatherMaker 48TC A/B07 Series, Installation Instructions Manual

Page: 47 / 60

47
SYSTEM
SETUP (cont)
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 35 °F to 55 ° F
(2 °C to 13 ° C);
Incremented by 10 °F
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 (closed or MIN POS).
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 10
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. Allows three stages of cooling, 1 economizer and 2 mechanical.
OFF = no Stage 3 cooling
SD DMPR POS CLO CLO or OPN Indicates shutdown signal from space thermostat or unitary controller.
When controller receives 24 vac input on the SD terminal in conventional
mode, the OA damper will open if programmed for OPN and OA damper
will close if programmed for CLO. All other controls, e.g., fans, etc. will
shut off.
DA LO ALM 45 F (7 C) 35 °F to 65 ° F
(2 °C to 18 ° C);
Incremented by 5 °F
Used for alarm for when the DA air temperature is too low. Set lower
range of alarm, below this temperature the alarm will show on the display.
DA HI ALM 80 F (27 C) 70 °F to 180 ° F
(21 °C to 82 ° C);
Incremented by 5 °F
Used for alarm for when the DA air temperature is too high. Set upper
range of alarm, above this temperature the alarm will show on the display.
DCVCAL ENA MAN MAN (manual) AUTO Turns on the DCV automatic control of the dampers. Resets ventilation
based on the RA, OA, and MA sensor conditions. Requires all 3 RA, OA,
and MA sensors.
MAT T CAL 0.0 F ±2.5° F SUPPLY AIR TEMPERATURE CALIBRATION
Allows for the operator to adjust for an out of calibration temperature sensor.
OAS T CAL 0.0 F ±2.5° F OUTSIDE AIR TEMPERATURE CALIBRATION
Allows for the operator to adjust for an out of calibration temperature sensor.
OA H CAL 0% RH ±10% RH OUTSIDE AIR HUMIDITY CALIBRATION
Allows for operator to adjust for an out of calibration humidity sensor.
RA T CAL 0.0 F ±2.5° F RETURN AIR TEMPERATURE CALIBRATION
Allows for the operator to adjust for an out of calibration temperature sensor.
RA H CAL 0% RH ±10% RH RETURN AIR HUMIDITY CALIBRATION
Allows for operator to adjust for an out of calibration humidity sensor.
DA T CAL 0.0 F ±2.5° F DISCHARGE AIR TEMPERATURE CALIBRATION
Allows for the operator to adjust for an out of calibration temperature sensor.
2SP FAN DELAY 5 Minutes 0 to 20 minutes in
1 minute increments
TIME DELAY ON SECOND STAGE ECONOMIZING
When in economizing mode this is the delay for the high speed fan to try
to satisfy the call for second stage cooling before the first stage mechani-
cal cooling is enabled.
CHECKOUT
DAMPER MINIMUM
POSITION
N/A N/A The checkout for the damper minimum position is based on the system.
See Table 13.
DAMPER OPEN N/A N/A Position damper to the full open position.
Exhaust fan contacts enable during the DAMPER OPEN test. Make sure
you pause in the mode to allow exhaust
contacts to energize due to the delay in the system.
DAMPER CLOSE N/A N/A Positions damper to the fully closed position
CONNECT Y1–O N/A N/A Closes the Y1-O relay (Y1-O)
CONNECT Y2–O N/A N/A Closes the Y2-O relay (Y2-O)
CONNECT AUX1-O N/A N/A Energizes the AUX output. If Aux setting is:
• NONE — not action taken
• ER V — 24 vac out. Turns on or signals an ERV that the conditions are
not good for economizing but are for ERV operation.
††
• SYS — 24 vac out. Issues a system alarm
CONNECT EXH1 N/A N/A Closes the power exhaust fan 2 relay (EXH1)
ALARMS
Alarms display only when they are active. The menu title “ALARMS(#)” includes the number of active alarms in parenthesis ( ). When using SYLK bus
sensors, “SYLK” will appear on the screen, and when using 20k OA temperature sensors, “SENS T” will appear on the screen
MA T SENS ERR N/A N/A SUPPLY AIR TEMPERATURE SENSOR ERROR
Mixed air sensor has failed or become disconnected - check wiring, then
replace sensor if the alarm continues.
CO2 SENS ERR N/A N/A CO
2
SENSOR ERROR
CO
2
sensor has failed, gone out of range or become disconnected - check
wiring, then replace sensor if the alarm continues.
OA SYLK T ERR N/A N/A OUTSIDE AIR S-BUS SENSOR ERROR
Outdoor air enthalpy sensor has failed or become disconnected - check
wiring, then replace sensor if the alarm continues.
OA SYLK H ERR N/A N/A
Table 12 — Menu Structure* (cont)
MENU PARAMETER
PARAMETER
DEFAULT
VALUE
PARAMETER
RANGE AND
INCREMENT †
NOTES