Carrier 50HCQ12 Installation Instructions Manual page 34

Single package rooftop heat pump with puron r-410a refrigerant
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MENU
PARAMETER
ACTUATOR
EXH1 OUT
EXH2 OUT
STATUS
(cont)
ERV
MECH COOL ON
or
HEAT STAGES ON
FAN SPEED
W (HEAT ON)
MAT SET
LOW T LOCK
DRYBLB SET
ENTH CURVE
DCV SET
MIN POS
VENTMAX
With 2-speed fan units
VENTMAX L (low speed
fan) and VENTMAX H
(high speed fan)
settings are required
SETPOINTS
VENTMIN
With 2-speed
fan units VENTMIN L
(low
speed fan) and
VENTMIN
H (high speed fan) set
ERV OAT SP
††
EXH1 SET
With 2-speed fan units
Exh1 L (low speed fan)
and Exh1 H (high speed
fan) settings are
required
EXH2 SET
With 2-speed fan units
Exh2 L (low speed fan)
and Exh2 H (high speed
fan) settings are
required
Table 12 — Menu Structure* (cont)
PARAMETER
PARAMETER
DEFAULT
RANGE AND
VALUE
INCREMENT
OK/Alarm (on Alarm
N/A
menu)
OFF
ON/OFF
OFF
ON/OFF
OFF
ON/OFF
0
0, 1, or 2
N/A
LOW or HIGH
N/A
ON/OFF
38 to 65 F;
53F
increment by 1
-45 to 80 F;
32F
increment by 1
48 to 80 F;
63F
increment by 1
ES1,ES2,ES3,ES4,
ES3
or ES5
500 to 2000ppm;
1100ppm
increment by 100
2.8 V
2 to 10 Vdc
2 to 10 Vdc
100 to 9990 cfm;
2.8 V
increment
by 10
2 to 10 Vdc
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 to 50 F; increment
32°F
by 1
0 to
50%
100%;increment by
1
0 to 100%;
75%
increment by 1
Displays ERROR if voltage or torque is below actuator range.
EXHAUST STAGE 1 RELAY OUTPUT
Output of EXH1 terminal:
ON = relay closed
OFF = relay open
EXHAUST STAGE 2 RELAY OUTPUT
Output of AUX terminal; displays only if AUX = EXH2
ENERGY RECOVERY VENTILATOR
Output of AUX terminal; displays only if AUX = ERV
Displays stage of mechanical cooling that is active.
Displays the stage of heat pump heating 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.
SUPPLY 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. Commonly referred to as the
Compressor lockout.
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 unit will economize
at 62°F and below and not economize at 64 F and above. There is a
2°F deadband.
ENTHALPY CHANGEOVER CURVE
Enthalpy boundary "curves" for economizing using single enthalpy.
DEMAND CONTROLLED VENTILATION
Displays only if CO
sensor is connected. Setpoint for Demand
2
Controlled 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
Displays ONLY if a CO
2
DCV MAXIMUM DAMPER POSITION
Displays only if a CO
sensor is connected. Used for Vbz (ventilation
2
max cfm) setpoint. Displays 2 to 10 V if <3 sensors (RA,OA, and MA).
In AUTO mode dampers controlled by CFM.
If OA, MA, RA, and CO
2
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 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
DCV MINIMUM DAMPER POSITION
Displays only if a CO
sensor is connected. Used for Ba (ventilation
2
min cfm) setpoint. 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.
If OA, MA, RA, and CO
2
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 MIN POS H
(high speed fan) settings are required. Default for VENTMIN L is 3.2V
and VENTMIN H is 2.8V
ENERGY RECOVERY VENTILATOR UNIT OUTDOOR AIR
TEMPERATURE SETPOINT
Only when AUX1 O = ERV
EXHAUST FAN STAGE 1 SETPOINT
Setpoint 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
Setpoint 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%
34
NOTES
sensor is NOT connected.
sensors are connected and DCV CAL
sensors are connected and DCV CAL

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