Carrier 50GCQ Series Service And Maintenance Instructions page 46

MENU PARAMETER
ECONO AVAIL
ECONOMIZING
OCCUPIED c
HEAT PUMP
COOL Y1—IN
COOL Y1—OUT
COOL Y2—IN
COOL Y2—OUT
MA TEMP
e
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 17 — W7220 Menu Structure
PARAMETER PARAMETER
DEFAULT RANGE AND
VALUE INCREMENT
NO YES/NO
NO YES/NO
NO YES/NO
N/A d COOL
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
2.0-v 2.0 to 10.0-v
N/A 0 to 100%
N/A 1 to 65535
N/A OK/Alarm (on
Alarm menu)
OFF ON/OFF
OFF ON/OFF
OFF ON/OFF
46
a
b
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 cycle 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