16
Table 6 —
Menu Structure (cont)
See Legend and notes on page 18.
MENU
PARAMETER
PARAMETER
DEFAULT
VALUE
PARAMETER RANGE AND
INCREMENT
NOTES
SETPOINTS
MAT SET
53°F
38°F to 65°F; increment by 1
Setpoint determines where the economizer will modulate the
OA damper to maintain the mixed air temperature.
LOW T LOCK
32°F
-45°F to 80°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°F
48°F to 80°F; increment by 1
Setpoint determines where the economizer will assume
outdoor air temperature is good for free cooling; e.g.; at 63°F
unit will economize at 62°F and below and not economize at
64°F and above. There is a 2°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
4.4 V
2 to 10 Vdc
Displays ONLY if a CO
2
sensor is NOT connected.
VENTMAX
With 2-speed fan units
VENTMAX L (low speed
fan) and VENTMAX H
(high speed fan) settings
are required
4.4 V
2 to 10 Vdc
or
100 to 9990 cfm;
increment by 10
Displays only if a CO
2
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.
VENTMAX L
6 V
N/A
N/A
VENTMAX H
4.4 V
N/A
N/A
VENTMIN
With 2-speed
fan units VENTMIN L (low
speed fan) and VENTMIN
H (high speed fan) set
2.8 V
2 to 10 Vdc or 100 to 9990
cfm increment by 10
Displays only if a CO
2
sensor is connected. Used for Ba
(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.
VENTMIN L
3.7 V
N/A
N/A
VENTMIN H
2.8 V
N/A
N/A
ERV OAT SP
32°F
0 to 50F; increment by 1
Only when AUX1 O = ERV
EXH1 SET
With 2-speed fan units
Exh1 L (low speed fan)
and Exh1 H (high speed
fan) settings are required
50%
0 to 100%;increment by 1
Setpoint for OA damper position when exhaust fan 1 is
powered by the economizer.
Exh1 L
65%
N/A
N/A
Exh1 H
50%
N/A
N/A
EXH2 SET
With 2-speed fan units
Exh2 L (low speed fan)
and Exh2 H (high speed
fan) settings are required
75%
0 to 100%; increment by 1
Setpoint for OA damper position when exhaust fan 2 is
powered by the economizer. Only used when AUX is set to
EHX2.
Exh2 L
80%
N/A
N/A
Exh2 H
75%
N/A
N/A
SYSTEM SETUP
INSTALL
01/01/10
N/A
Display order = MM/DD/YY
Setting order = DD, MM, then YY.
UNITS DEG
F
F or C
Sets economizer controller in degrees Fahrenheit or Celsius
EQUIPMENT
CONV
Conventional or HP
CONV = conventional; HP O/B = Enable Heat Pump mode.
Use AUX2 I for Heat Pump input from thermostat or
controller.
AUX2 I
W
SD/W or HP(O)/HP(B)
In CONV mode: SD + Enables configuration of shutdown
(default); W = Informs controller that system is in heating
mode. In HP O/B mode: HP(O) = energize heat pump on Cool
(default); HP(B) = energize heat pump on heat.
FAN TYPE
2 speed
1 speed/2 speed
Sets the economizer controller for operation of 1 speed or 2
speed supply fan. (NOTE: for 3 speed units (48/50LC 14-26),
setpoint is a 2 speed.)
FAN CFM
5000cfm
100 to 15000 cfm;
increment by 100
This is the capacity of the RTU. The value is found in the
Project Submittal documents for the specific RTU.
AUX OUT
NONE
NONE
ERV
EXH2
SYS
• NONE = not configured (output is not used)
• ERV = Energy Recovery Ventilator
• EXH2 = second damper position relay closure for second
exhaust fan
• SYS = use output as an alarm signal
OCC
INPUT
INPUT or ALWAYS
When using a setback thermostat with occupancy out (24
vac), the 24 vac is input “INPUT” to the OCC terminal. If no
occupancy output from the thermostat then change program to
“ALWAYS” OR add a jumper from terminal R to OCC
terminal.
FACTORY DEFAULT
NO
NO or YES
Resets all set points to factory defaults when set to YES. LCD
will briefly flash YES and change to NO but all parameters will
change to the factory default values.
