11
Table 3 ─ Menu Structure
a
(cont)
Menu Parameter
Parameter
Default
Value
Parameter
Range and
Increment
b
Notes
STATUS
(CONT.)
EXH2 OUT OFF ON/OFF Output of AUX1 O terminal; displays only if AUX1 O = EXH2
ERV OFF ON/OFF Output of AUX1 O terminal; displays only if AUX1 O = ERV
MECH COOL ON 0 0, 1, or 2 Displays stage of mechanical cooling that is active.
FAN SPEED n/a LOW or HIGH Displays speed of fan on a 2-speed fan unit.
W (HEAT IN) n/a ON/OFF Displays status of heat on a 2-speed fan unit.
SETPOINTS MAT SET 53
o
F 38 to 65
o
F;
increment by 1
Setpoint determines where the economizer will modulate the OA
damper to maintain the mixed air temperature.
LOW T LOCK 32
o
F -45 to 80
o
F;
increment by 1
Setpoint determines outdoor temperature when the mechanical cooling
cannot be turned on. Commonly referred to as the Compressor lockout.
DRYBLB SET 63
o
F 48 to 80
o
F;
increment by 1
Setpoint determines where the economizer will assume outdoor air
temperature is good for free cooling; e.g.; at 63
o
F unit will economize at
62
o
F and below and not economize at 64
o
F and above. There is a 2
o
F
deadband.
ENTH CURVE ES3 ES1,ES2,ES3,ES4,
or ES5
Enthalpy boundary “curves” for economizing using single enthalpy
DCV SET 1100ppm 500 to 2000ppm;
increment by 100
Displays only if CO
2
sensor is connected. Setpoint for Demand Control
Ventilation of space. Above the setpoint, the OA dampers will modulate
open to bring in additional OA to maintain a space ppm level below the
setpoint.
MIN POS 2.8 V 2 to 10 Vdc Displays ONLY if a CO2 sensor is NOT connected. With 2-speed fan
units MIN POS L (low speed fan) and MIN POS H (high speed fan)
settings are required. Default for MIN POS L is 3.2V and MIN POS H
is 2.8V
VENTMAX 2.8 V 2 to 10 Vdc
or
100 to 9990 cfm
increment by 10
Displays only if a CO2 sensor is connected.
Used for Vbz (ventilation max cfm) setpoint.
Displays 2 to 10 V if <3 sensors (RA,OA and MA).
In AUTO mode dampers controlled by CFM
With 2-speed fan units VENTMAX L (low speed fan) and VENTMAX H
(high speed fan) settings are required. Default for VENTMAX L is 3.2V
and VENTMAX H is 2.8V
VENTMAX L
3.2 V
VENTMAX H
2.8 V
VENTMIN 2.25 V 2 to 10 Vdc
or 100 to 9990 cfm
increment by 10
Displays only if CO2 sensor is connected.
Used for Va (ventilation min cfm) setpoint.
Displays 2 to 10 V if <3 sensors (RA,OA and MA). Va is only set if DCV
is used. This is the ventilation for less than maximum occupancy of the
space.
In AUTO mode dampers controlled by CFM
With 2-speed fan units VENTMIN L (low speed fan) and VENTMIN H
(high speed fan) settings are required. Default for VENTMIN L is 2.5V
and VENTMIN H is 2.25V
VENTMIN L 2.5 V
VENTMIN H 2.25 V
ERV OAT SP 32
o
F 0 to 50
o
F;
increment by 1
Only when AUX1 O = ERV
EXH1 SET 50% 0 to 100%;
increment by 1
Setpoint for OA damper position when exhaust fan 1 is powered by the
economizer.
With 2-speed fan units Exh1 L (low speed fan) and Exh1 H (high speed
fan) settings are required. Default for Exh1 L is 65% and Exh1 H is 50%
EXH1 L 65%
EXH1 H 50%
EXH2 SET 75% 0 to 100%;
increment by 1
Setpoint for OA damper position when exhaust fan 2 is powered by the
economizer. Only used when AUX1 O is set to EHX2.
With 2-speed fan units Exh2 L (low speed fan) and Exh2 H (high speed
fan) settings are required. Default for Exh2 L is 80% and Exh2 H is 75%
EXH2 L 80%
EXH2 H 75%
SYSTEM
SETUP
INSTALL 01/01/10 Display order = MM/DD/YY
Setting order = DD, MM, then YY.
UNITS DEG
o
F
o
F or
o
C Sets economizer controller in degrees Fahrenheit or Celsius
EQUIPMENT CONV CONV
HP
CONV = conventional.
HP O/B = Enables Heat Pump mode. Use AUX2 I for Heat Pump input
from thermostat or controller.
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