Carrier WeatherExpert 50LC 07 Series Service And Maintenance Instructions page 32

MENU PARAMETER
ECON 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
Table 12 — W7220 Menu Structure*
PARAMETER PARAMETER
DEFAULT RANGE AND
VALUE INCREMENT
NO YES/NO
NO YES/NO
NO YES/NO
COOL
N/A**
HEAT
OFF ON/OFF
OFF ON/OFF
OFF ON/OFF
OFF ON/OFF
_ _ . _ °F –40°F to 150°F
(or _ _ . _ °C) (–40°C to 66°C)
_ _ . _ °F –40°F to 150°F
(or _ _ . _ °C) (–40°C to 66°C)
_ _ . _ °F –40°F to 140°F
(or _ _ . _ °C) (–40°C to 60°C)
_ _ % 0 to 100%
_ _ . _ °F 0°F to 140°F
(or _ _ . _ °C) (–18°C to 60°C)
_ _ % 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 65,535
OK/Alarm (on
N/A
Alarm menu)
OFF ON/OFF
32
EXPANDED PARAMETER NAME
†
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 first 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 or 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 Sylk Bus 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 Sylk Bus
sensor.
Displays _ _% if not connected short, or out of range.
RETURN AIR TEMPERATURE
Displays measured value of return air temperature from RAT
Sylk Bus 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 Sylk Bus
sensor.
Displays _ _% if sensor sends invalid value, if not connected,
short or out of range
SPACE/RETURN AIR CO
Displays value of measured CO
connected, short or out of range. May be adjusted in Advanced
menu by Zero offset and Span.
DEMAND CONTROLLED VENTILATION STATUS
Displays ON if above set point and OFF if below set point, and
ONLY if a CO sensor is connected.
2
Displays voltage output to the damper actuator.***
Displays actual position of actuator
Displays number of times actuator has cycled.
1 cycle equals 180 degrees of actuator movement in any
direction.
Displays ERROR if voltage or torque is below actuator range.
EXHAUST STAGE 1 RELAY OUTPUT
Displays ON when damper position reaches programmed
percentage set point.
Output of EXH1 terminal:
ON = relay closed
OFF = relay open
Notes
2
from CO sensor. Invalid if not
2 2