7
Table 5
─
Menu Structure
a
(cont)
Menu
Parameter
Parameter
Default
Value
Parameter
Range and Increment
b
Notes
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
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
VENTMAX H
4.4 V
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
VENTMIN H
2.8 V
ERV OAT SP
32
o
F
0 to 50
o
F;
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%
Exh1 H
50%
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%
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
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.
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 Ventilatio
n
• 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
