Carrier WeatherExpert 50LC - Page 30

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Table 5 – Menu Structure
*
Menu Parameter
Parameter
Default
Value
Parameter
Range and Increment
{
EXPANDED PARAMETER NAME
Notes
STA TUS ECON AVAIL NO YES/NO ECONOMIZING AV AILABLE
YES = economizing available; the system can use outside air for free
coo ling when req ui re d
ECONOMIZING NO YES/NO ECONOMIZING ACTIVE
YES = Outside air being used for Cooling Stage 1.
NO = Ec ono m izing not ac t ive
OCCUPIED NO YES/NO OCCUPIED
YES = OCC signal received from space thermostat
or unitary co nt rolle r.
YES = 24 Vac on termi nal OCC.
NO = 0 Vac on termi nal OCC.
HEAT PUMP n/a** COOL
HEAT
HEAT PUMP MODE
(Not available on 2 ---Speed config urati on)
COOL Y1 ---IN OFF ON/OFF FIRST STAGE COOLING DEMAND (Y1 - --IN)
Y1---I signal from sp a c e therm ostat or unitary cont ro ller for Cooli ng Sta g e 1.
ON = 24 Vac on termi nal Y1---I
OFF = 0Vac on terminal Y1---I
COOL Y1 ---OUT OFF ON/OFF FIRST STAGE COOLING RELA Y OUTPUT
ON = 24 Vac on termi nal Y1---O; Stage 1 mechanical cooling called on
OFF = 0 Vac on terminal Y1---O; no mechanical cooling
COOL Y2 ---IN OFF ON/OFF SECOND STA VE COO LIN G DEMAND (Y2---IN )
Y2---I signal from sp a c e therm ostat or unitary cont ro ller for Cooli ng Sta g e 2.
ON = 24 Vac on termi nal Y2---I
OFF = 0 Vac on terminal Y2---I
COOL Y2 ---OUT OFF ON/OFF SECOND STAGE COOLING RELA Y OUTPUT
ON = 24 Vac on termi nal Y2---O; Stage 2 mechanical cooling called on
OFF = 0 Vac on terminal Y2---O; no Stage 2 mechanical cooling
MA TEMP nn_F(or_C) 0 to 140_F
(---18 to 60_C)
SUPPLY AIR TEMPERA TURE, Cooling Mode
Disp lays value of measured mixed/c ooled air from SAT sensor in fan
section.
D ispl ay s --- --- . --- if n ot c on n e c t ed, s h or t o r o ut --- o f --- r an ge. S ee Me n u No te 2
DA TEMP nn_F(or_C) 0 to 140_F
(---18 to 60_C)
DIS CH ARGE AI R TEMPER ATURE, aft e r Heat ing section
(Accessory sensor required)
Displays when Discharge Air sensor is connected and displays measured
di s c harg e tem pe rat ure.
D ispl ay s --- --- --- --- --- --- if se n sor se n ds in val id va lu e, i f n ot c o n n ec t ed, sh or t
or out---of ---range.
OA TEMP nn_F(or_C) ---40 to 140_F
(---40 to 60_C)
OUTSIDE AIR TEMPERATURE
Displays meas ure d value of outdo or ai r temp e rat ure.
D ispl ay s --- --- --- --- --- --- if se n sor se n ds in val id va lu e, i f n ot c o n n ec t ed, sh or t
or out---of ---range.
OA HUM nn% 0 to 100% OUTSIDE AI R RELATIVE HUMI DITY
Displays mea sured value of outd o or humi dity from OA ent ha lp y se ns o r.
RA TEMP nn_F(or_C) 0 to 140_F
(---18 to 60_C)
RETURN AIR TEMPERATURE
(Accessory sensor required)
Displays mea s ure d value of return air temp e ra t ure from RAT se ns o r.
RA HUM nn% 0 to 100% RETURN AIR RELA TIVE HUMIDITY
(Accessory enthalpy sensor required)
Displays mea s ure d value of return air humidity from RA s ensor.
IN CO2 ___ppm 0 to 2000 ppm SP ACE/RETURN AIR CO2
(CO
2
sensor required, accessory or factory option)
Displays value of measured CO
2
from CO
2
sensor .
Invalid if not connected, short or out ---of---range
DCV STATUS n/a ON/OFF DEMA N D CONTROLLED VENTILATI ON STATUS
(CO
2
sensor required, accessory or factory option)
Displays O N if IN CO
2
value above setpoint DCV SET and OFF if below
setpoint DCV SET.
DAMPER OUT 2.0V 2.0 to 10.0V Disp lays voltage output to the damper actuator.
0% = OSA Damper fully closed
100% = OSA Damper full open
ACT POS nn% 0 to 100% Disp lays actual posi t ion of outdoor air damper actuator
2.0V = OSA Damper fully ---closed
10.0V = OSA Damper full open
ACT COUNT n/a 1 to 65535 Displays numb e r of tim e s ac tuator has cyc led.
1 Cycle equals ac c rue d 180_ of actuator movement in any directi on
ACTUATOR n/a OK/Alarm
(on Alarm menu)
Displays Error if voltage or torque is below actuator range