Carrier WeatherMaker 48TC A/B07 Series, Installation Instructions Manual

Page: 46 / 60

46
SET POINTS
MAT SET 53F
38 °F to 65 ° F
(3°C to 18°C);
increment by 1 °F
SUPPLY AIR set point
Set point determines where the economizer will modulate the OA damper
to maintain the mixed air temperature.
LOW T LOCK 32F
–45°F to 80 ° F
(–43°C to 27°C);
increment by 1 °F
COMPRESSOR LOW TEMPERATURE LOCKOUT
Set point determines outdoor temperature when the mechanical cooling
cannot be turned on. Commonly referred to as the Compressor lockout.
DRYBLB SET 63F
48 °F to 80 ° F
(9°C to 27°C);
increment by 1 °F
OA DRY BULB TEMPERATURE CHANGEOVER SET POINT
Set point 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 deadband.
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. Set point for Demand Con-
trolled Ventilation of space. Above the set point, 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) set point. 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) set point. 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.
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 °F to 50 ° F
(–18°C to 10°C);
increment by 1 °F
ENERGY RECOVERY VENTILATOR UNIT OUTDOOR AIR TEMPERA-
TURE SET POINT
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 SET POINT
Set point 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%
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.
See Menu Note 4.
AUX2 IN 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.
NOTE: If using 2-speed fan mode, you must program CONV mode for W.
Shutdown is not available in 2-speed fan mode. See Menu Note 4.
In HP O/B mode:
HP(O) = energize heat pump on Cool (default);
HP(B) = energize heat pump on heat.
FAN SPEED 2 speed 1 speed/2 speed Sets the economizer controller for operation of 1 speed or 2 speed supply
fan.
NOTE: 2-speed fan option also needs Heat (W1) programmed in AUX 2
In. See Menu Note 4.
FAN CFM 5000cfm 100 to 15000 cfm;
increment by 100
UNIT DESIGN AIRFLOW (CFM)
Enter only if using DCVAL ENA = AUTO
The value is found on the nameplate label for the specific unit.
AUX1 OUT NONE NONE
ERV
EXH2
SYS
Select OUTPUT for AUX1 O relay
• 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 OCCUPIED MODE BY EXTERNAL SIGNAL
When using a setback thermostat with occupancy out (24 vac), the 24 vac
is input as “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.
Table 12 — Menu Structure* (cont)
MENU PARAMETER
PARAMETER
DEFAULT
VALUE
PARAMETER
RANGE AND
INCREMENT †
NOTES