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Carrier WeatherExpert 50LC - Page 32

Carrier WeatherExpert 50LC
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32
Table 5 -- Menu Structure* (cont)
Menu Parameter
Parameter
Default
Value
Parameter
Range and Increment
{
EXPANDED PARAMETER NAME
Notes
SYSTEM
SETUP
INSTALL 01/01/10 Display order = MM/DD/YY
Setting order = DD, MM, then YY.
UNITS DEG _F _For_C Sets economizer controller in degrees Fahrenheit or Celsius.
EQUIPMENT CONV Conventional or HP CONV = conv e nt ional;
HP O/B = Enable Heat Pump mode. Not available wit h 2---speed
SeeMenuNote4
AUX2 I W W required for 2---speed
mode
W = Informs controller that system is in heating mode.
SD = Enable s confi g ura t ion of shutd o w n (not available on 2 ---Spee d)
SeeMenuNote4
FAN TYPE 2speed 2speed required Sets the economizer controller for operation of 1 speed or 2 speed indoor
fan sys t em.
SeeMenuNote4.
FAN CFM 5000cfm 100 to 15000 cfm;
increment by 100
UNI T DESIG N AIRFL O W (CFM)
Enter ON LY of using DCVCAL ENA = AUTO
The value is found i n the Proje c t Sub m ittal doc um e nt s for the sp e c ific RTU.
AUX OUT NONE NONE
EXH2
SYS
Select OUTPUT for AUX1 O relay
NONE = not configured (output is not used)
EXH2 = second damper position relay closure for second
exhaust fan
SYS = use output as an alarm signal
OCC INPUT INPUT or ALWAYS OCCUP IED MODE BY EXTERNA L SIG NAL
When using a set b a c k the rm ostat wi th occ up ancy out (24 Vac), the 24 Va c
is input to the OCC term inal. RTU cont ro l ci rc uit prov ides 24---Va c to OC C
throug h OCCUP I ED terminals on Inte g rat ed St ag ing Control Board.
FACTORY DEFAULT NO NO or YES Resets all set points to factory defaults when set to YES. LCD will briefly
flas h YES and change to NO but all para m eters wi ll chang e to the fac tory
de fault values. RECHE CK AUX 2 I an d FANT Y PE for requir ed 2---speed
values.
ADV AN CED
SETUP
MA LO SET 45_F
(7_C)
35 to 55_F;
(2 to 12_C)
Incremented by 1_
SUPPL Y AI R TEMPERATURE LOW LIMIT
Temperat ure to achieve Freeze Protec ti on (close damper and alarm if
tem p e rature falls belo w se t up value)
FREEZE POS CLO CLO or MIN FREEZE PROTECTION DAMPER POSITION
Damper posi ti on when freeze protection is active
CLO = close d
MIN = MIN POS or VENTMAX
CO2 ZERO 0ppm 0 to 500 ppm:
Increment by 10
CO
2
ppm level to match CO
2
Sensor start level.
CO2 SPAN 2000ppm 1000 to 3000 ppm;
Increment by 50
CO
2
ppm span to match CO
2
sensor .
STG3 DLY 2.0h 0 min, 5 min, 15 min,
then 15 min intervals.
Up to 4 h or OFF
COOLING STAGE 3 DELA Y
Delay after stage 2 for cool has be en act ive. Turns on 2
nd
stag e of cooling
when economizer is 1
st
stag e and mechanical cooling is 2
nd
SD DMPR POS CLO CLO or OPN Function NOT A VA ILABLE with 2---speed mode
DCVCAL ENA MAN MAN (manual) Turns on the DCV autom a t ic control of the damp e rs. Resets ve nt ilati on.
MATTCAL 0.0_F
(or C)
+ / --- 2 . 5 _F
( + / --- 1 . 4 _C)
SUPPL Y AIR TEMPERATURE CALIBRATION
Allows for the operator to adjust for an out of calibrati on supply air
tem p e ra t ure (SAT) sens or
OA T CAL 1.0_F
(or C)
+ / --- 2 . 5 _F
( + / --- 1 . 4 _C)
OUTSIDE AIR TEMPERATURE CALIBRATION
Allows for the operator to adjust for an out of calib rati on outsid e air
tem p e ra t ure (O AT) sens o r
OA H CAL 0% RH + / --- 1 0 % R H OUTSIDE AIR HUMIDITY CALIBRATION
Allows for the operator to adjust for an out of outs id e air enthalpy sensor
RA T CAL 2.0_F
(or C)
+ / --- 2 . 5 _F
( + / --- 1 . 4 _C)
RETURN AIR TEMPERATURE CALIBRATION
Allows for the operator to adjust for an out of calibrati on return air
temperature (RA) sensor
RA H CAL 0% RH + / --- 1 0 % R H RETURN AIR HUMIDITY CALIBRATION
Allows for the operator to adjust for an out of calibrat ion return air enthalpy
sensor
DA T CAL 0.0_F
(or C)
+ / --- 2 . 5 _F
( + / --- 1 . 4 _C)
DISCHARGEAIRTEMPERATURECALIBRATION
Allows for the operator to adjust for an out of calib rati on dis c harge air
tem p e ra t ure (DAT) sens or
2SP FAN DELAY 5 Minutes 0to20minutesin
1 minute increments
TIM E DELAY ON 2
nd
STAG E ECONOMI ZI NG
While in the Economizing mode, this is the delay between thermostat Y2
call and Y1---O outp ut to mec ha nical cooli ng stage, to allow high sp ee d fan
operati on to attempt to cool space first.

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