Carrier WeatherExpert 48LC Installation Instructions Manual page 43

Weatherexpertr series single package rooftop gas heat/electric cooling unit with puronr (r ---410a) refrigerant sizes: 14, 17, 20, 24, 26
Hide thumbs Also See for WeatherExpert 48LC:
Table of Contents

Advertisement

Menu
Parameter
STATUS
RA HUM
(cont)
IN CO2
DCV STATUS
DAMPER OUT
ACT POS
ACT COUNT
ACTUATOR
EXH1 OUT
EXH2 OUT
MECH COOL ON
FAN SPEED
W (HEAT ON)
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
Table 9 - - Menu Structure* (cont)
Parameter
Parameter
Default
Range and Increment
Value
nn%
0 to 100%
___ppm
0 to 2000 ppm
n/a
ON/OFF
2.0V
2.0 to 10.0V
nn%
0 to 100%
n/a
1 to 65535
n/a
OK/Alarm
(on Alarm menu)
OFF
ON/OFF
OFF
ON/OFF
0
0, 1, or 2
n/a
LOW or HIGH
n/a
ON/OFF
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
EXPANDED PARAMETER NAME
{
RETURN AIR RELATIVE HUMIDITY
(Accessory enthalpy sensor required)
Displays measured value of return air humidity from RA sensor.
SPACE/RETURN AIR CO2
(CO
sensor required, accessory or factory option)
2
Displays value of measured CO
Invalid if not connected, short or out---of---range
DEMAND CONTROLLED VENTILATION STATUS
(CO
sensor required, accessory or factory option)
2
Displays ON if IN CO
value above setpoint DCV SET and OFF if below
2
setpoint DCV SET.
Displays voltage output to the damper actuator.
0%
= OSA Damper fully closed
100% = OSA Damper full open
Displays actual position of outdoor air damper actuator
2.0V = OSA Damper fully---closed
10.0V = OSA Damper full open
Displays number of times actuator has cycled.
1 Cycle equals accrued 180_ of actuator movement in any direction
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
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.
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
43
Notes
from CO
sensor.
2
2

Advertisement

Table of Contents
loading

Table of Contents