4
IMPORTANT
: Table 2 illustrates the complete hierarchy. your menu parameters may be different depending on your
configuration. For example if you do not have a DCV (CO
2
) sensor, then none of the DCV parameters appear.
Table 2 – Menu Structure
a
Menu
Parameter
Parameter
Default
Value
Parameter
Range and Increment
b
Notes
STATUS
ECON AVAIL
NO
YES/NO
YES = economizing available; the system can use
outside air for free cooling when required
ECONOMIZING
NO
YES/NO
YES = outside air being used for 1
st
stage cooling.
OCCUPIED
NO
YES/NO
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
c
COOL
HEAT
Displays COOL or HEAT when system is set to heat pump
(non---conventional)
COOL Y1---IN
OFF
ON/OFF
Y1---I signal from space thermostat or unitary controller for cooling stage
1.
ON = 24 Vac on terminal Y1---I
OFF = 0Vac on terminal Y1---I
COOL Y1---OUT
OFF
ON/OFF
Cool stage 1 Relay Output to stage 1 mechanical cooling (Y1---OUT
terminal)
COOL Y2---IN
OFF
ON/OFF
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
Cool Stage 2 Relay Output to mechanical cooling (Y2---OUT terminal).
MA TEMP
_ _ . _
_
F
0 to 140
_
F
Displays value of measured mixed air from MAT sensor.
Displays --- ---.--- if not connected, short or out---of---range.
DA TEMP
_ _ . _
_
F
0 to 140
_
F
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
---40 to 140
_
F
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%
Displays measured value of outdoor humidity from OA sensor.
Displays _ _% if not connected short, or out---of---range.
RA TEMP
_ _ . _
_
F
0 to 140
_
F
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%
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
Displays value of measured CO
2
from CO
2
sensor. Invalid if not
connected, short or out---of---range.
DCV STATUS
n/a
ON/OFF
Displays ON if above setpoint and OFF if below setpoint, and ONLY if a
CO
2
sensor is connected.
DAMPER OUT
2.0V
2.0 to 10.0V
Displays voltage output to the damper actuator.
EXH1 OUT
OFF
ON/OFF
Output of EXH1 terminal:
ON = relay closed
OFF = relay open
EXH2 OUT
OFF
ON/OFF
Output of AUX terminal; displays only if AUX = EXH2
ERV
OFF
ON/OFF
Output of AUX terminal; displays only if AUX = ERV
MECH COOL ON
0
0, 1, or 2
Displays stage of mechanical cooling that is active.
LLECO
N
--
01
S
I
