Carrier 48TC series, Инструкции по обслуживанию и техническому обслуживанию, Страница: 62 / 112

62
ADVANCED
SETUP (cont)
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 cooling when economizer is first stage call and mechanical
cooling is second stage call. 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)
NONE
35°F to 65°F
(2°C to 18°C);
Increment 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)
NONE
70°F to 180°F
(21°C to 82°C);
Increment by 5°F
Used for alarm for when the DA air temperature is too high. Sets
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 (RA, OA, MA, CO
2
) sensors.
This operation is not operable with a 2-speed fan unit.
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 mechanical cooling is enabled.
CHECKOUT***
DAMPER MINIMUM
POSITION
— —
The checkout for the damper minimum position is based on the
system. See Table 27.
DAMPER OPEN — —
Position damper to the full open position.
Exhaust fan contacts enable during the DAMPER OPEN test.
Make sure to pause in the mode to allow exhaust contacts to
energize due to the delay in the system.
DAMPER CLOSE — — Positions damper to the fully closed position
CONNECT Y1–O — — Closes the Y1-O relay (Y1-O)
CONNECT Y2–O — — Closes the Y2-O relay (Y2-O)
CONNECT AUX1–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
conditions are not good for economizing but are for ERV
operation.
††
• SYS — 24 vac out. Issues a system alarm
CONNECT EXH1 — — Closes the power exhaust fan 1 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 — —
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 — —
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 — — 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 — —
Table 26 — W7220 Menu Structure* (cont)
MENU PARAMETER
PARAMETER
DEFAULT
VALUE
PARAMETER
RANGE AND
INCREMENT
†
EXPANDED PARAMETER NAME
Notes