Carrier WeatherMaker 48TC Series Installation Instructions Manual page 47

MENU PARAMETER
FACTORY DEFAULT
SYSTEM
SETUP (cont)
MA LO SET
FREEZE POS
CO2 ZERO
CO2 SPAN
STG3 DLY
SD DMPR POS
DA LO ALM
ADVANCED
DA HI ALM
SETUP
DCVCAL ENA
MAT T CAL
OAS T CAL
OA H CAL
RA T CAL
RA H CAL
DA T CAL
2SP FAN DELAY
DAMPER MINIMUM
POSITION
DAMPER OPEN
DAMPER CLOSE
CHECKOUT CONNECT Y1–O
CONNECT Y2–O
CONNECT AUX1-O
CONNECT EXH1
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
ALARMS
CO2 SENS ERR
OA SYLK T ERR
OA SYLK H ERR
Table 12 — Menu Structure* (cont)
PARAMETER PARAMETER
DEFAULT RANGE AND
VALUE INCREMENT
NO NO or YES
45 F 35°F to 55°F
(2°C to 13°C);
Incremented by 10°F
CLO CLO or MIN
0ppm 0 to 500 ppm;
Increment by 10
2000ppm 1000 to 3000 ppm;
Increment by 10
2.0h 0 min, 5 min, 15 min,
then 15 min intervals.
Up to 4 hrs or OFF
CLO CLO or OPN
45 F (7 C) 35°F to 65°F
(2°C to 18°C);
Incremented by 5°F
80 F (27 C) 70°F to 180°F
(21°C to 82°C);
Incremented by 5°F
MAN MAN (manual) AUTO Turns on the DCV automatic control of the dampers. Resets ventilation
0.0 F ±2.5°F
0.0 F ±2.5°F
0% RH ±10% RH
0.0 F ±2.5°F
0% RH ±10% RH
0.0 F ±2.5°F
5 Minutes 0 to 20 minutes in
1 minute increments
N/A N/A
N/A N/A
N/A N/A
N/A N/A
N/A N/A
N/A N/A
N/A N/A
N/A N/A
N/A N/A
N/A N/A
N/A N/A
47
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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.
SUPPLY AIR TEMPERATURE LOW LIMIT
Temperature to achieve Freeze Protection (close damper and alarm if
temperature falls below setup value).
FREEZE PROTECTION DAMPER POSITION
Damper position when freeze protection is active (closed or MIN POS).
CO ppm level to match CO
2 2
CO ppm span to match CO
2 2
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
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.
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.
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.
based on the RA, OA, and MA sensor conditions. Requires all 3 RA, OA,
and MA sensors.
SUPPLY AIR TEMPERATURE CALIBRATION
Allows for the operator to adjust for an out of calibration temperature sensor.
OUTSIDE AIR TEMPERATURE CALIBRATION
Allows for the operator to adjust for an out of calibration temperature sensor.
OUTSIDE AIR HUMIDITY CALIBRATION
Allows for operator to adjust for an out of calibration humidity sensor.
RETURN AIR TEMPERATURE CALIBRATION
Allows for the operator to adjust for an out of calibration temperature sensor.
RETURN AIR HUMIDITY CALIBRATION
Allows for operator to adjust for an out of calibration humidity sensor.
DISCHARGE AIR TEMPERATURE CALIBRATION
Allows for the operator to adjust for an out of calibration temperature sensor.
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.
The checkout for the damper minimum position is based on the system.
See Table 13.
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.
Positions damper to the fully closed position
Closes the Y1-O relay (Y1-O)
Closes the Y2-O relay (Y2-O)
Energizes the AUX output. If Aux setting is:
• NONE — not action taken
• ERV — 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
Closes the power exhaust fan 2 relay (EXH1)
SUPPLY AIR TEMPERATURE SENSOR ERROR
Mixed air sensor has failed or become disconnected - check wiring, then
replace sensor if the alarm continues.
CO SENSOR ERROR
2
CO sensor has failed, gone out of range or become disconnected - check
2
wiring, then replace sensor if the alarm continues.
OUTSIDE AIR S-BUS SENSOR ERROR
Outdoor air enthalpy sensor has failed or become disconnected - check
wiring, then replace sensor if the alarm continues.
NOTES
sensor start level.
sensor.
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