Carrier 50FC 04 Series Service And Maintenance Instructions page 45

MENU PARAMETER
ECONO AVAIL
ECONOMIZING
OCCUPIED
HEAT PUMP
COOL Y1—IN
COOL Y1—OUT
COOL Y2—IN
COOL Y2—OUT
MA TEMP
DA TEMP
STATUS
OA TEMP
OA HUM
RA TEMP
RA HUM
IN CO2
DCV STATUS
DAMPER OUT
ACT POS
ACT COUNT
ACTUATOR
EXH1 OUT
EXH2 OUT
ERV
Table 12 — W7220 Menu Structure
PARAMETER PARAMETER
DEFAULT RANGE AND
VALUE INCREMENT
NO YES/NO
NO YES/NO
NO YES/NO
COOL
N/A g
HEAT
OFF ON/OFF
OFF ON/OFF
OFF ON/OFF
OFF ON/OFF
_ _ . _ F 0 to 140 F
_ _ . _ F 0 to 140 F
_ _ . _ F –40 to 140 F
_ _ % 0 to 100%
_ _ . _ F 0 to 140 F
_ _ % 0 to 100%
_ _ _ ppm 0 to 2000 ppm
N/A ON/OFF
2.0v 2.0 to 10.0v
N/A 0 to 100%
N/A 1 to 65535
OK/Alarm (on
N/A
Alarm menu)
OFF ON/OFF
OFF ON/OFF
OFF ON/OFF
45
a,b,c,d,e
f
FIRST STAGE COOLING DEMAND (Y1–IN)
YES = economizing available; the system can use outside air for
free cooling when required
FIRST STAGE COOLING RELAY OUTPUT
YES = outside air being used for 1 stage cooling
OCCUPIED
YES = OCC signal received from space thermostat or unitary
controller
YES = 24 Vac on terminal OCC
NO = 0 Vac on terminal OCC
HEAT PUMP MODE
Displays COOL or HEAT when system is set to heat pump
(Non-conventional)
FIRST STAGE COOLING DEMAND (Y1-IN)
Y1–I signal from space thermostat or unitary controller for cooling
stage 1.
ON = 24 Vac on terminal Y1–I
OFF = 0 Vac on terminal Y1–I
FIRST STAGE COOLING RELAY OUTPUT
Cool stage 1 Relay Output to stage 1 mechanical cooling
(Y1–OUT terminal)
SECOND STAGE COOLING DEMAND (Y2–IN)
Y2–I signal from space thermostat our unitary controller for second
stage cooling.
ON = 24 Vac on terminal Y2–I
OFF = 0 Vac on terminal Y2–I
SECOND STAGE COOLING RELAY OUTPUT
Cool Stage 2 Relay Output to mechanical cooling
(Y2–OUT terminal)
SUPPLY AIR TEMPERATURE, Cooling Mode
Displays value of measured mixed air from MAT sensor.
Displays _ _ . _ F if not connected, short or out-of-range.
DISCHARGE AIR TEMPERATURE, after Heating section
Displays when Discharge Air sensor is connected and displays
measured discharge temperature.
Displays _ _ . _F if sensor sends invalid value, if not connected,
short or out-of-range.
OUTSIDE AIR TEMP
Displays measured value of outdoor air temperature.
Displays _ _ . _F if sensor sends invalid value, short or out-of-
range.
OUTSIDE AIR RELATIVE HUMIDITY
Displays measured value of outdoor humidity from OA sensor.
Displays _ _% if not connected short, or out-of-range.
RETURN AIR TEMPERATURE
Displays measured value of return air temperature from
RAT sensor.
Displays _ _ . _ F if sensor sends invalid value, if not connected,
short or out-of-range
RETURN AIR RELATIVE HUMIDITY
Displays measured value of return air humidity from RA sensor.
Displays _ _% if sensor sends invalid value, if not connected, short
or out-of-range
SPACE/RETURN AIR CO
2
Displays value of measured CO
connected, short or out-of-range
DEMAND CONTROLLED VENTILATION STATUS
Displays ON if above setpoint and OFF if below setpoint, and ONLY
if a CO sensor is connected.
2
Displays voltage output to the damper actuator.
Displays actual position of outdoor air damper actuator
Displays number of times actuator has cycled.
1 cycles equals 180 deg. of actuator movement in any direction.
Displays ERROR if voltage or torque is below actuator range.
EXHAUST STAGE 1 RELAY OUTPUT
Output of EXH1 terminal:
ON = relay closed
OFF = relay open
EXHAUST STAGE 2 RELAY OUTPUT
Output of AUX terminal; displays only if AUX = EXH2
ENERGY RECOVERY VENTILATOR
Output of AUX terminal; displays only if AUX = ERV
NOTES
from CO sensor. Invalid if not
2 2