Carrier WeatherMaster Puron 48HC D17 Service And Maintenance Instructions page 60

MENU PARAMETER
VENTMIN
ERV OAT SP
SETPOINTS
(cont)
EXH1 SET
EXH2 SET
INSTALL
UNITS DEG
EQUIPMENT
AUX2 IN
FAN SPEED
SYSTEM
SETUP
FAN CFM
AUX1 OUT
OCC
FACTORY DEFAULT
MA LO SET
ADVANCED
FREEZE POS
SETUP
CO2 ZERO
CO2 SPAN
Table 26 — W7220 Menu Structure* (cont)
PARAMETER PARAMETER
DEFAULT RANGE AND
VALUE INCREMENT
2 to 10 vdc or 100
to 9990 cfm
increment by 10
2.25 V 100 to 9990 cfm;
increment by 10
2 to 10 vdc
0°F to 50°F
(–18°C to 10°C);
†† 32°F (0°C)
increment by
0 to 100%;
50%
increment by 1
0 to 100%;
75%
increment by 1
01/01/10
°F
CONV
Shutdown (SD)
Heat (W1)
W
2 speed 1 speed/2 speed
100 to 15000 cfm;
5000 cfm
increment by 100
NONE
INPUT INPUT or ALWAYS
NO NO or YES
35°F to 65°F
(2°C to 18°C);
45°F (7°C)
Increment by
CLO CLO or MIN
0 to 500 ppm;
0ppm
Increment by 10
1000 to 3000 ppm;
2000ppm
Increment by 50
EXPANDED PARAMETER NAME
†
DCV MINIMUM DAMPER POSITION
Displays only if a CO
(ventilation min cfm) set point. This is the ventilation for less than
maximum occupancy of the space.
If OA, MA, RA, and CO
ENABLE is set to AUTO mode, the OA dampers are controlled
by CFM and displays from 100 to 9990 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
ENERGY RECOVERY VENTILATOR UNIT OUTDOOR AIR
TEMPERATURE SETPOINT
Only when AUX1 O = ERV
1 degree
EXHAUST FAN STAGE 1 SETPOINT
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%
EXHAUST FAN STAGE 2 SETPOINT
Set point 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%
Display order = MM/DD/YY
N/A
Setting order = DD, MM, then YY.
°F or °C Sets economizer controller in degrees Fahrenheit or Celsius
CONV CONV = conventional;
or HP O/B = Enable Heat Pump mode. Use AUX2 I for Heat Pump
HP input from thermostat or controller.
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
HP(O) mode for W. Shutdown is not available in 2-speed fan mode.
HP(B) In HP O/B mode:
HP(O) = energize heat pump on Cool (default);
HP(B) = energize heat pump on heat.
Sets the economizer controller for operation of 1 speed or 2
speed supply fan. The controller does not control the fan, but
positions the OA and RA dampers to heating or cooling mode.
NOTE: 2-speed fan option also needs Heat (W1) programmed in
AUX 2 In.
UNIT DESIGN AIRFLOW (CFM)
Enter only if using DCVCAL ENA = AUTO
This is the capacity of the RTU. The value is found on the
nameplate label for the specific unit.
Select OUTPUT for AUX1 O relay
NONE • NONE = not configured (output is not used)
ERV • ERV = Energy Recovery Ventilator
EXH2 • EXH2 = second damper position 24 vac out for second exhaust
SYS fan
• SYS = use output as an alarm signal
OCCUPIED MODE BY EXTERNAL SIGNAL
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.
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.
SUPPLY AIR TEMPERATURE LOW LIMIT
Temperature to activate Freeze Protection (close damper or
modulate to MIN POS if temp falls below set value).
1 degree
FREEZE PROTECTION DAMPER POSITION
Damper position when freeze protection is active (closed or MIN
POS).
CO ppm level to match CO
2
CO ppm span to match CO
2
output would be 500 CO
60
Notes
sensor is connected. Used for Va
2
sensors are connected and DCV CAL
2
††
sensor start level.
2
sensor; e.g.: 500-1500 sensor
2
zero and 1000 CO span.
2 2