Carrier 50GCQ Series Service And Maintenance Instructions page 48

MENU PARAMETER
ERV OAT SP g
EXH1 SET
EXH1 L SET
EXH1 M SET
SETPOINTS
EXH1 H SET
(CONT)
EXH2 L SET
EXH2 M SET
EXH2 H SET
INSTALL
UNITS DEG
EQUIPMENT
AUX2 IN
FAN SPEED
SYSTEM
SETUP
h
FAN CFM
AUX1 OUT
OCC
FACTORY DEFAULT
MA LO SET
FREEZE POS
ADVANCED
SETUP
CO2 ZERO
CO2 SPAN
Table 17 — W7220 Menu Structure
PARAMETER PARAMETER
DEFAULT RANGE AND
VALUE INCREMENT
32°F 0 to 50°F
increment by 1
50% 0 to 100%
65% 0 to 100%
60% 0 to 100%
50% 0 to 100%
80% 0 to 100%
77% 0 to 100%
75% 0 to 100%
01/01/17 N/A
F F or C
CONV Conventional or HP CONV = conventional;
W SD/W or
HP(O)/HP(B)
2 speed 1 speed
2 speed
2SP H/C
3 speed
100 to 15000 cfm; 
5000 cfm
increment by 100
NONE NONE
ERV
EXH2
SYS
INPUT INPUT or ALWAYS OCCUPIED MODE BY EXTERNAL SIGNAL
NO NO or YES
35 to 55°F; 
45°F
Incremented by 10
CLO CLO or MIN
0 ppm 0 to 500 ppm;
Increment by 10
2000 ppm 1000 to 3000 ppm;
Increment by 10
48
a (cont)
b
ENERGY RECOVERY VENTILATOR UNIT OUTDOOR AIR
TEMPERATURE SETPOINT
Only displayed when AUX1 O = ERV.
Exhaust fan set point for single speed units. Based on OA Damper
position to activate power exhaust.
EXHAUST FAN 1 SETPOINT AT LOW SPEED on 2 speed or 3 speed
with 1 heat and 2 cool. Based on economizer OA damper position to
activate power exhaust.
EXHAUST FAN 1 SETPOINT AT MEDIUM SPEED. Only displays if
unit is set for 3 speed with 1 heat and 2 cool. Based on economizer OA
damper position to activate power exhaust.
EXHAUST FAN 1 SETPOINT AT HIGH SPEED on 2 speed or
3 speed with 1 heat and 2 cool. Based on economizer OA damper
position to activate power exhaust.
EXHAUST FAN 2 SETPOINT AT LOW SPEED on 2 speed or 3 speed
with 1 heat and 2 cool. Based on economizer OA damper position to
activate power exhaust.
EXHAUST FAN 2 SETPOINT AT MEDIUM SPEED. Only displays if
unit is set for 3 speed with 1 heat and 2 cool. Based on economizer OA
damper position to activate power exhaust.
EXHAUST FAN 2 SETPOINT AT HIGH SPEED on 2 speed or
3 speed with 1 heat and 2 cool. Based on economizer OA damper
position to activate power exhaust.
Display order = MM/DD/YY.
Setting order = DD, MM, then YY.
Sets economizer controller in degrees Fahrenheit or Celsius.
HP O/B = Enable Heat Pump mode. Use AUX2 I for Heat Pump input
from thermostat or controller.
See Menu Note h.
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 h.
In HP O/B mode:
HP(O) = energize heat pump on Cool (default);
HP(B) = energize heat pump on Heat.
Sets the economizer controller operation based on 1 speed, 2 speed,
2-speed heat/cool (2SP H/C), or 3-speed supply fan.
NOTE: Multi-speed fan options also need Heat (W1) programmed in
AUX 2 In. See Menu Note h.
UNIT DESIGN AIRFLOW (cfm)
Enter only if using DCVAL ENA = AUTO
The value is found on the nameplate label for the specific unit.
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
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.
NOTE: RECHECK AUX2 IN and FANTYPE for required 2-speed
values.
SUPPLY AIR TEMPERATURE LOW LIMIT
Temperature to achieve Freeze Protection (close damper and alarm if
temperature falls below setup value).
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
NOTES
g
sensor start level.
2
sensor.
2