Carrier CRECOMZR085A00 Installation Instructions Manual page 16

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MENU
PARAMETER
INSTALL
UNITS DEG
EQUIPMENT
AUX2 I
FAN TYPE
SYSTEM
SETUP
* These Fan Type (speed) settings are for future use only. Do not use for 3-speed LC units.
FAN cfm
AUX OUT
OCC
MA LO SET
FREEZE POS
CO2 ZERO
CO2 SPAN
STG3 DLY
SD DMPR POS
ADVANCED
DCVCAL ENA
SETUP
MAT T CAL
OA T CAL
OA H CAL
RA T CAL
RA H CAL
DA T CAL
2SP FAN DELAY
DAMPER VMIN-HS
DAMPER VMAX-HS
DAMPER OPEN
DAMPER CLOSE
CONNECT
CHECKOUT
Y1-O
CONNECT
Y2-O
CONNECT AUX1O
Table 9 — Menu Structure
PARAMETER
PARAMETER
DEFAULT
RANGE AND
VALUE
INCREMENT
01/01/10
°F
°F or °C
CONV
Conventional or HP
W required for
W
2-speed mode
2-speed
1-speed/2-speed
100 to 15000 cfm;
5000 cfm
increment by 100
NONE
ERV
NONE
EXH2
SYS
INPUT
INPUT or ALWAYS
35°F to 55°F
45°F (7°C)
(2°C to 12°C);
incremented by 1°
CLO
CLO or MIN
0 to 500 ppm;
0 ppm
Increment by 10
1000 to 3000 ppm;
2000 ppm
Increment by 10
0 min, 5 min, 15 min,
2.0h
then 15 min intervals.
Up to 4h or OFF
CLO
CLO or OPN
MAN
MAN (manual) AUTO
0.0°F (or °C)
±2.5°F (±1.4°C)
0.0°F (or °C)
±2.5°F (±1.4°C)
0% RH
±10% RH
2.0°F (or °C)
±2.5°F (±1.4°C)
0% RH
±10% RH
0.0°F (or °C)
±2.5°F (±1.4°C)
0 to 20 minutes in 1
5 minutes
minute increments
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
1
(cont)
2
Display order = MM/DD/YY
Setting order = DD, MM, then YY
Sets economizer controller in degrees Fahrenheit or Celsius.
Always set to CONV even for heat pump.
Always set to W.
Sets the economizer controller to the number of unit fan speeds.
Fan Type options:
1 Speed units
2 speed units
*2 speed units: 1 for heat and 1 for cool
*3 speed units: 1 for heat and 2 for cool
UNIT DESIGN AIRFLOW (CFM)
Enter ONLY if using DCVCAL ENA = AUTO
• NONE = not configured (output is not used)
• ERV = Energy Recovery Ventilation
• EXH2 = second damper position relay closure for second exhaust fan
• SYS = use output as an alarm signal
Always set to INPUT.
MIXED 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
CLO = closed
MIN = MIN POS or VENTMIN
CO
ppm level to match CO
sensor start level.
2
2
CO
ppm span to match CO
2
2
COOLING STAGE 3 DELAY
Delay after stage 2 for cool has been active. Turns on second stage of cooling when
economizer is first stage and mechanical cooling is second. Allows three stages of
cooling, 1 economizer and 2 mechanical.
OFF = no Stage 3 cooling
Function NOT AVAILABLE with 2-speed mode
Indicates shutdown signal from space thermostat or unitary controller. When
controller receives 24 vac input on the SD terminal in conventional mode, the OA
damper will open if programmed for OPN and OA damper will close if programmed
for CLO. All other controls, e.g., fans, etc. will shut off.
Turns on the DCV automatic control of the dampers. Resets ventilation based on the
RA, OA, and MA sensor conditions. Requires all 3 RA, OA, and MA sensors.
For single speed units only.
MIXED AIR TEMPERATURE CALIBRATION
Allows for the operator to adjust for an out of calibration mixed air temperature (MAT)
sensor.
OUTSIDE AIR TEMPERATURE CALIBRATION
Allows for the operator to adjust for an out of calibration outside air temperature
(OAT) sensor.
OUTSIDE AIR HUMIDITY CALIBRATION
Allows for the operator to adjust for an out of calibration outside air enthalpy sensor.
RETURN AIR TEMPERATURE CALIBRATION
Allows for the operator to adjust for an out of calibration return air temperature (RA)
sensor.
RETURN AIR HUMIDITY CALIBRATION
Allows for the operator to adjust for an out of calibration return air enthalpy sensor.
DISCHARGE AIR TEMPERATURE CALIBRATION
Allows for the operator to adjust for an out of calibration discharge air temperature
(DAT) sensor.
TIME DELAY ON SECOND STAGE ECONOMIZING
While in the Economizing mode, this is the delay between thermostat Y2
call and Y1-O output to mechanical cooling stage, to allow high speed fan
operation to attempt to cool space first.
Positions OA damper to VMIN High Speed position
Positions OA damper to VMAX High Speed position
Position OA damper to the full open position.
Exhaust fan contacts enable during the DAMPER OPEN test. Make sure to pause in
the mode to allow exhaust contacts to energize due to the delay in the system.
Positions damper to the fully closed position.
Closes the Y1-O relay (Y1-O).
Closes the Y2-O relay (Y2-O).
Energizes the AUX1O output. If Aux setting is:
• NONE—no action taken
• ERV—24 vac out. Turns on or signals an ERV that the conditions
are not good for economizing but are for ERV operation.
• SYS—24 vac out. Issues a system alarm.
16
NOTES
sensor.
3

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