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IMPORTANT: The default setting on the W7220 controller is for a "Fan Type" with 2 speeds, which is correct for 2 or 3
speed units.
IMPORTANT: Table 8 illustrates the complete hierarchy. Your menu parameters may be be different depending on your
computer configuration.
Menu
Parameter
ECON AVAIL
ECONOMIZING
OCCUPIED
HEAT PUMP
COOL Y1- IN
COOL Y1- OUT
COOL Y2- IN
COOL Y2- OUT
MA TEMP
Status
DA TEMP
OA TEMP
OA HUM
RA TEMP
RA HUM
IN CO2
DCV STATUS
DAMPER OUT
EXH1 OUT
EXH2 OUT
ERV
MECH COOL ON
Table 8 – Menu Structure
Parameter
Parameter range
Default
and
b
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
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
OFF
ON/OFF
OFF
ON/OFF
OFF
ON/OFF
0, 1, or 2
a
YES = economizing available; the system can use outside air for free cooling
when required
YES = outside air being used for 1st stage cooling
YES = OCC signal received from space thermostat or unitary controller
YES = 24 VAC on terminal OCC
NO = 0 VAC on terminal OCC
Displays COOL or HEAT when system is set to heat pump (Non - conventional)
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 stage 1 Relay Output to stage 1 mechanical cooling (Y1- OUT terminal)
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 Stage 2 Relay Output to mechanical cooling (Y2- OUT terminal)
Displays value of measured mixed air from MAT sensor. Displays _ _ . _ ° F if not
connected, short or out - of- range
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
Displays measured value of outdoor air temperature. Displays _ _ _° F if sensor
sends invalid value, short or out - of- range
Displays measured value of outdoor humidity from OA sensor
Displays _ _% if not connected short, or out - of- range
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
Displays measured value of return air humidity from RA sensor
Displays _ _% if sensor sends invalid value, if not connected, short or
out - of- range
2
Displays value of measured CO
from CO
or out - of- range
Displays ON if above setpoint and OFF if below setpoint, and ONLY if a CO2
sensor is connected
Displays voltage output to the damper actuator
Output of EXH1 terminal: ON = relay closed, OFF = relay open
Output of AUX terminal; displays only if AUX = EXH2
Output of AUX terminal; displays only if AUX = ERV
Displays stage of mechanical cooling that is active
20
Notes
2
sensor. Invalid if not connected, short
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