Carrier WeatherExpert 48LC Installation Instructions Manual page 36

Single package rooftop gas heat/electric cooling unit with puronr (r ---410a) refrigerant size: 07
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Parameter
SETPOINTS
MAT SET
LOW T LOCK
DRYBLB SET
ENTH CURVE
DCV SET
MIN POS L
MIN POS H
VENTMAX L
VENTMAX H
VENTMIN L
VENTMIN H
EXH1 L SET
EXH1 H SET
EXH2 L SET
EXH2 H SET
Table 8 - - Menu Structure
Parameter
Parameter
Default
Range and Increment
Value
53_F
38 to 65_F;
(12_C)
(3 to 18_C)
increment by 1
32_F
---45 to 80_F;
(0_C)
( ---43 to 27_C)
increment by 1
63_F
48 to 80_F
(17_C)
(9 to 27_C)
increment by 1
ES3
ES1, ES2, ES3, ES4, or
ES5
1100ppm
500 to 2000 ppm;
increment by 100
6.0 V
2 to 10 Vdc
4.4 V
2 to 10 Vdc
6.0 V
2 to 10 Vdc
4.4 V
2 to 10 Vdc
3.7 V
2 to 10 Vdc
2.8 V
2 to 10 Vdc
65%
0 to 100%;
Increment by 1
50%
0 to 100%;
Increment by 1
80%
0 to 100%;
Increment by 1
75%
0 to 100%;
Increment by 1
*
(cont)
EXPANDED PARAMETER NAME
{
SUPPLY AIR SETPOINT
Setpoint determines where the economizer will modulate the OA damper to
maintain the mixed air temperature.
See Menu Note 2.
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.
See Menu Note 3
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 Controlled
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 AT LOW SPEED
Displays ONLY if a CO
sensor is NOT connected.
2
VENTILATION MINIMUM POSITION AT HIGH SPEED
Displays ONLY if a CO
sensor is NOT connected.
2
DCV MAXIMUM DAMPER POSITION AT LOW SPEED
(Requires CO
sensor connected)
2
DCV MAXIMUM DAMPER POSITION AT HIGH SPEED
(Requires CO
sensor connected)
2
DCV MINIMUM DAMPER POSITION AT LOW SPEED
(Requires CO
sensor connected)
2
DCV MINIMUM DAMPER POSITION AT HIGH SPEED
(Requires CO
sensor connected)
2
EXHAUST FAN STAGE 1 SETPOINT AT LOW SPEED
Setpoint for OA damper position when exhaust fan1 is powered by the
economizer
EXHAUST FAN STAGE 1 SETPOINT AT HIGH SPEED
Setpoint for OA damper position when exhaust fan1 is powered by the
economizer
EXHAUST FAN STAGE 2 SETPOINT AT LOW SPEED
Setpoint for OA damper position when exhaust fan1 is powered by the
economizer. Only used when AUX1---O is set to EHX2.
EXHAUST FAN STAGE 2 SETPOINT AT HIGH SPEED
Setpoint for OA damper position when exhaust fan1 is powered by the
economizer. Only used when AUX1---O is set to EHX2.
36
Notes

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