Carrier WeatherMaster 48HC Series Installation Instructions Manual page 47

MENU
ADVANCED
SETUP (cont)
CHECKOUT***
ALARMS
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Table 13 — W7220 Menu Structure* (cont)
PARAMETER
PARAMETER DEFAULT
VALUE
DA LO ALM 45°F (7°C)
DA HI ALM 80°F (27°C)
DCVCAL ENA MAN
MAT T CAL 0.0°F
OAS T CAL 0.0°F
OA H CAL 0% RH
RA T CAL 0.0°F
RA H CAL 0% RH
DA T CAL 0.0°F
2SP FAN DELAY 5 Minutes
DAMPER MINIMUM
N/A
POSITION
DAMPER OPEN N/A
DAMPER CLOSE N/A
CONNECT Y1–O N/A
CONNECT Y2–O N/A
CONNECT AUX1–O N/A
CONNECT EXH1 N/A
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
MA T SENS ERR N/A
CO2 SENS ERR N/A
OA SYLK T ERR N/A
OA SYLK H ERR N/A
RA SYLK T ERR N/A
RA SYLK H ERR N/A
DA SYLK T ERR N/A
OA SENS T ERR N/A
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PARAMETER
RANGE AND
INCREMENT †
NONE
Used for alarm for when the DA air temperature is too low. Set
35°F to 65°F
lower range of alarm, below this temperature the alarm will show
(2°C to 18°C);
on the display.
Increment by 5°F
NONE
Used for alarm for when the DA air temperature is too high. Sets
70°F to 180°F
upper range of alarm; above this temperature, the alarm will
(21°C to 82°C);
show on the display.
Increment by 5°F
Turns on the DCV automatic control of the dampers. Resets
MAN (manual) ventilation based on the RA, OA, and MA sensor conditions.
AUTO Requires all (RA, OA, MA, CO
This operation is not operable with a 2-speed fan unit.
SUPPLY AIR TEMPERATURE CALIBRATION
± 2.5°F Allows for the operator to adjust for an out of calibration
temperature sensor.
OUTSIDE AIR TEMPERATURE CALIBRATION
± 2.5°F Allows for the operator to adjust for an out of calibration
temperature sensor.
OUTSIDE AIR HUMIDITY CALIBRATION
±10% RH Allows for operator to adjust for an out of calibration humidity
sensor.
RETURN AIR TEMPERATURE CALIBRATION
± 2.5°F Allows for the operator to adjust for an out of calibration
temperature sensor.
RETURN AIR HUMIDITY CALIBRATION
±10% RH Allows for operator to adjust for an out of calibration humidity
sensor.
DISCHARGE AIR TEMPERATURE CALIBRATION
± 2.5°F Allows for the operator to adjust for an out of calibration
temperature sensor.
TIME DELAY ON SECOND STAGE ECONOMIZING
0 to 20 minutes in 1 When in economizing mode, this is the delay for the high speed
minute increments fan to try to satisfy the call for second stage cooling before the
first stage mechanical cooling is enabled.
The checkout for the damper minimum position is based on the
N/A
system. See Table 14.
Position damper to the full open position.
Exhaust fan contacts enable during the DAMPER OPEN test.
N/A
Make sure to pause in the mode to allow exhaust contacts to
energize due to the delay in the system.
N/A Positions damper to the fully closed position
N/A Closes the Y1-O relay (Y1-O)
N/A Closes the Y2-O relay (Y2-O)
Energizes the AUX output. If Aux setting is:
• NONE — no action taken
• ERV — 24 vac out. Turns on or signals an ERV that the
N/A
conditions are not good for economizing but are for ERV
operation.
††
• SYS — 24 vac out. Issues a system alarm
N/A Closes the power exhaust fan 1 relay (EXH1)
appear on the screen
SUPPLY AIR TEMPERATURE SENSOR ERROR
N/A 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
2
N/A
disconnected - check wiring then replace sensor if the alarm
continues.
N/A OUTSIDE AIR S-BUS SENSOR ERROR
Outdoor air enthalpy sensor has failed or become disconnected -
N/A
check wiring, then replace sensor if the alarm continues.
N/A RETURN AIR S-BUS SENSOR ERROR
Return air enthalpy sensor has failed or become disconnected -
N/A
check wiring, then replace sensor if the alarm continues.
DISCHARGE AIR S-BUS SENSOR ERROR
N/A Discharge air sensor has failed or become disconnected - check
wiring, then replace sensor if the alarm continues.
OUTSIDE AIR TEMPERATURE SENSOR ERROR
N/A Outdoor air temperature sensor has failed or become
disconnected - check wiring, then replace if the alarm continues.
47
EXPANDED PARAMETER NAME
Notes
) sensors.
2