Carrier WeatherMaster 50HC*A07 Series, Installation Instructions Manual

Page: 37 / 52

37
Table 8 — W7220 Menu Structure*
MENU PARAMETER
PARAMETER
DEFAULT
VALUE
PARAMETER
RANGE AND
INCREMENT
†
NOTES
STATUS
ECON AVAIL
NO YES/NO
ECONOMIZING AVAILABLE
YES = economizing available; the system can use outside air for free cool-
ing when re
q uired
ECONOMIZING
NO YES/NO
ECONOMIZING ACTIVE
YES = Outside air being used for 1 stage cooling
NO = Economizing not active
OCCUPIED
NO YES/NO
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
N/A **
COOL
HEAT
HEAT PUMP MODE
Displays COOL or HEAT when system is set to heat pump
(Non-conventional)
COOL Y1—IN
OFF ON/OFF
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
COOL Y1—OUT
OFF ON/OFF
FIRST STAGE COOLING RELAY OUTPUT
Cool stage 1 Relay Output to stage 1 mechanical cooling
(Y1–OUT terminal)
COOL Y2—IN
OFF ON/OFF
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
COOL Y2—OUT
OFF ON/OFF
SECOND STAGE COOLING RELAY OUTPUT
Cool Stage 2 Relay Output to mechanical cooling
(Y2–OUT terminal)
MA TEMP
_ _ . _ °F
(or _ _ . _ °C) 0 to 150°F
(-18 to 60°C)
SUPPLY AIR TEMPERATURE, Cooling Mode
Displays value of measured mixed/cooled air from SAT sensor in fan
section.
Displays _ _ . _ if not connected, short or out-of-range. See Note 2.
DA TEMP
_ _ . _ °F
(or _ _ . _ °C) 0 to 150°F
(-18 to 60°C)
DISCHARGE AIR TEMPERATURE, after Heating section
(Accessory sensor re
q uired)
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.
OA TEMP
_ _ . _ °F
(or _ _ . _ °C -40 to 140°F
(-40 to 60°C
OUTSIDE AIR TEMP
Displays measured value of outdoor air temperature.
Displays _ _ . _°F if sensor sends invalid value, if not connected, short or
out-of-range.
OA HUM
_ _ % 0 to 100%
OUTSIDE AIR RELATIVE HUMIDITY
Displays measured value of outdoor humidity from OA enthalpy sensor.
RA TEMP
_ _ . _ °F
(or _ _ . _ °C 0 to 140°F
(-18 to 60°C)
RETURN AIR TEMPERATURE
(Accessory sensor re
q uired)
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
RA HUM
_ _ % 0 to 100%
RETURN AIR RELATIVE HUMIDITY
(Accessory enthalpy sensor re
q uired)
Displays measured value of return air humidity from RA sensor.
Displays _ _% if sensor sends invalid value, if not connected, short or out-
of-range
IN CO2
_ _ _ ppm 0 to 2000 ppm
SPACE/RETURN AIR CO
2
(CO
2
sensor re q uired, accessory or factory option)
Displays value of measured CO
2
from CO
2
sensor. Invalid if not con-
nected, short or out-of-range. May be adjusted in Advanced menu by Zero
offset and Span.
DCV STATUS
N/A ON/OFF
DEMAND CONTROLLED VENTILATION STATUS
(CO
2
sensor re q uired, accessory or factory option)
Displays ON if IN CO2 value above setpoint DCV SET and OFF if below
setpoint DCV SET.
DAMPER OUT
2.0V 2.0 TO 10.0V Displays output voltage or position to the damper actuator. ***
ACT POS
N/A 0 to 100% Displays actual position of outdoor air damper actuator
ACT COUNT N/A 1 to 65535 Displays number of times actuator has cycled.
1 cycle e
q uals accrued 180 deg. of actuator movement in any direction.
ACTUATOR N/A OK/Alarm (on Alarm
menu) Displays ERROR if voltage or tor q ue is below actuator range.
EXH1 OUT OFF ON/OFF EXHAUST STAGE 1 RELAY OUTPUT
Output of EXH1 terminal. Displays On when damper position reaches pro-
grammed percentage setpoint.
ON = 24 Vac Output; OFF = No Output.