Carrier CRECOMZR067A01 Installation Instructions Manual page 19

MENU PARAMETER
ERV
STATUS
MECH COOL ON
(cont)
FAN SPEED
W (HEAT ON)
MAT SET
LOW T LOCK
DRYBLB SET
DRYBLB DIF
ENTH CURVE
DCV SET
MIN POS
MIN POS L
MIN POS M
SETPOINTS
MIN POS H
VENTMAX L
VENTMAX M
VENTMAX H
VENTMIN L
VENTMIN M
VENTMIN H
ERV OAT SP
EXH1 SET
EXH1 L SET
Table 11 — Menu Structure*(cont)
PARAMETER PARAMETER
DEFAULT RANGE AND
VALUE INCREMENT†
OFF ON/OFF
0 0, 1, or 2
N/A LOW or HIGH
N/A ON/OFF
38 to 70°F;
53°F
(3 to 18°C)
(12°C)
increment by 1
–45 to 80°F;
32°F
(–43 to 27°C)
(0°C)
increment by 1
48 to 80°F
63°F
(9 to 27°C)
(17°C)
increment by 1
0° to 6°F
0°F
increment by 2
ES1, ES2, ES3,
ES3
ES4, or ES5
500 to 2000 ppm;
1100 ppm
increment by 100
4.4 V 2 to 10 Vdc
6.0 V 2 to 10 Vdc
5.4V 2 to 10 Vdc
4.4 V 2 to 10 Vdc
6.0 V 2 to 10 Vdc
5.4V 2 to 10 Vdc
4.4 V 2 to 10 Vdc
3.7 V 2 to 10 Vdc
3.4V 2 to 10 Vdc
2.8 V 2 to 10 Vdc
0 to 50°F;
32°F
(–18 to 10°C)
(0°C)
increment by 1
50% 0 to 100%
0 to 100%;
65%
Increment by 1
ENERGY RECOVERY UNIT RELAY OUTPUT
Output of AUX terminal; displays only if AUX = ERV
ON = relay closed
OFF = relay open
Displays stage of mechanical cooling that is active.
SUPPLY FAN SPEED
Displays speed setting of fan on a 2-speed fan unit.
HEAT DEMAND STATUS
Displays status of heat demand on a 2-speed fan unit.
MIXED AIR SETPOINT
Setpoint determines where the economizer will modulate the OA damper to
maintain the mixed air temperature.
COMPRESSOR LOW TEMPERATURE LOCKOUT
Setpoint determines outdoor temperature when the mechanical cooling
cannot be turned on.
OA DRY BULB TEMPERATURE CHANGEOVER SETPOINT
Setpoint determines where the economizer will assume outdoor air
temperature is good for free cooling; e.g.: at 63°F (17°C), unit will economize
at 62°F (16.7°C) and below and not economize at 64°F (17.8°C) and above.
There is a 2°F (1.1°C) deadband.
DRYBULB SET is only displayed if the economizer has a single dry bulb
sensor
DRYBULB DIFFERENTIAL will only show if using dual drybulb, i.e., when an
outdoor air temperature sensor C7250 is attached to OAT terminals, and a
C7400S sensor is wired to S-Bus and configured for RAT (return air). Free
cooling will be assumed whenever OA Temp is at or below RAT minus this
drybulb setting.
ENTHALPY CHANGEOVER CURVE
(Requires enthalpy sensor option)
Enthalpy boundary "curves" for economizing using single enthalpy.
DEMAND CONTROLLED VENTILATION SETPOINT
Displays only if CO sensor is connected. Setpoint for Demand Control
2
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.
VENTILATION MINIMUM POSITION. Only displays if controller is set for
single speed unit under FAN TYPE, and if DCV is NOT used.
VENTILATION MINIMUM POSITION AT LOW SPEED. Only displays if unit is
set for 2 or 3 speed and CO2 is not used. IF using 2 speed with 1 heat and 1
cool then set for HEATING ventilation. If using 3 speed with 1 heat and 2 cool
then set for LOW SPEED COOLING ventilation.
VENTILATION MINIMUM POSITION AT MEDIUM SPEED. Only displays if unit
is set for 3 speed with 1 heat and 2 cool, and CO2 is not used. Set for HEATING
ventilation.
VENTILATION MINIMUM POSITION AT HIGH SPEED. Only displays if unit is
set for 2 or 3 speed and CO2 is not used. IF using 2 speed with 1 heat and 1
cool then set for COOLING ventilation. If using 3 speed with 1 heat and 2 cool
then set for HIGH SPEED COOLING ventilation.
DCV MAXIMUM DAMPER POSITION AT LOW SPEED. Only displays if unit is
set for 2 speed or 3 speed with 1 heat and 2 cool. IF using 2 speed with 1 heat
and 1 cool then set for HEATING ventilation. If using 3 speed with 1 heat and 2
cool then set for LOW SPEED COOLING.
DCV MAXIMUM DAMPER POSITION AT MEDIUM SPEED. Only displays if
unit is set for 3 speed with 1 heat and 2 cool. Set for HEATING ventilation.
DCV MAXIMUM DAMPER POSITION AT HIGH SPEED. Only displays if unit is
set for 2 speed or 3 speed with 1 heat and 2 cool. IF using 2 speed with 1 heat
and 1 cool then set for COOLING ventilation. If using 3 speed with 1 heat and 2
cool then set for HIGH SPEED COOLING ventilation.
DCV MINIMUM DAMPER POSITION AT LOW SPEED. Only displays if unit is
set for 2 speed or 3 speed with 1 heat and 2 cool. IF using 2 speed with 1 heat
and 1 cool then set for HEATING ventilation. If using 3 speed with 1 heat and 2
cool then set for LOW SPEED COOLING.
DCV MINIMUM DAMPER POSITION AT MEDIUM SPEED. Only displays if
unit is set for 3 speed with 1 heat and 2 cool. Set for HEATING ventilation.
DCV MINIMUM DAMPER POSITION AT HIGH SPEED. Only displays if unit is
set for 2 speed or 3 speed with 1 heat and 2 cool. IF using 2 speed with 1 heat
and 1 cool then set for COOLING ventilation. If using 3 speed with 1 heat and 2
cool then set for HIGH SPEED COOLING ventilation.
ENERGY RECOVERY VENTILATION 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 SETPOINT AT LOW SPEED (on 2 speed unit)
Setpoint for OA damper position when exhaust fan is powered by the
economizer
19
NOTES