34
SETPOINTS
MAT SET 53F
38 to 65 F; increment
by 1
SUPPLY AIR SETPOINT
Setpoint determines where the economizer will modulate the OA damper
to maintain the mixed air temperature.
LOW T LOCK 32F
-45 to 80 F;
increment by 1
COMPRESSOR LOW TEMPERATURE LOCKOUT
Setpoint determines outdoor temperature when the mechanical cooling
cannot be turned on. Commonly referred to as the Compressor lockout.
DRYBLB SET 63F
48 to 80 F; increment
by 1
OA DRY BULB TEMPERATURE CHANGEOVER SETPOINT
Setpoint determines where the economizer will assume outdoor air tem-
perature 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 dead-
band.
ENTH CURVE ES3
ES1,ES2,ES3,ES4, or
ES5
ENTHALPY CHANGEOVER CURVE
Enthalpy boundary “curves” for economizing using single enthalpy.
DCV SET 1100ppm
500 to 2000 ppm;
increment by 100
DEMAND CONTROLLED VENTILATION
Displays only if CO
2
sensor is connected. Setpoint for Demand Controlled
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 set-
point.
MIN POS 2.8 V 2 to 10 Vdc
VENTILATION MINIMUM POSITION
Displays ONLY if a CO
2
sensor is NOT connected.
VENTMAX
With 2-speed fan units VENT-
MAX L (low speed fan) and
VENTMAX H (high speed fan)
settings are required
2.8 V
2 to 10 Vdc
DCV MAXIMUM DAMPER POSITION
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.
100 to 9990 cfm;
increment
by 10
If OA, MA, RA, and CO
2
sensors are connected and DCV CAL ENABLE is
set to AUTO mode, the OA dampers are controlled by CFM and displays
from 100 to 9990 CFM.
2 to 10 Vdc
With 2-speed fan units VENT L (low speed fan) and MIN POS H (high
speed fan) settings are required. Default for VENTMAX L is 3.2V and
VENTMAX H is 2.8V
VENTMIN
With 2-speed
fan units VENTMIN L (low
speed fan) and VENTMIN
H (high speed fan) set
2.25 V
2 to 10 Vdc or 100 to
9990 cfm increment
by 10
DCV MINIMUM DAMPER POSITION
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 occu-
pancy of the space. In AUTO mode dampers controlled by CFM.
100 to 9990 cfm;
increment
by 10
If OA, MA, RA, and CO
2
sensors are connected and DCV CAL ENABLE is
set to AUTO mode, the OA dampers are controlled by CFM and displays
from 100 to 9990 CFM.
2 to 10 Vdc
With 2-speed fan units VENTMIN L (low speed fan) and MIN POS H (high
speed fan) settings are required. Default for VENTMIN L is 3.2V and
VENTMIN H is 2.8V
ERV OAT SP
††
32°F
0 to 50 F; increment
by 1
ENERGY RECOVERY VENTILATOR UNIT OUTDOOR AIR TEMPERA-
TURE SETPOINT
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
EXHAUST FAN STAGE 1 SETPOINT
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%
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
EXHAUST FAN STAGE 2 SETPOINT
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%
Table 8 — Menu Structure* (cont)
MENU PARAMETER
PARAMETER
DEFAULT
VALUE
PARAMETER
RANGE AND
INCREMENT
†
NOTES
To Next Page
Loading...
