Carrier WeatherExpert 48N2 Controls, Start-Up, Operation, Service, And Troubleshooting page 76

SAT Settling Time (SAT.T)
The amount of time (in seconds) the economizer reported posi-
tion must remain unchanged (± EC.MD) before the control will
attempt to detect a mechanically disconnected actuator. This is
to allow SAT to stabilize at the current economizer position.
This configuration sets the settling time of the supply-air tem-
perature (SAT). This typically tells the control how long to
wait after a stage change before trusting the SAT reading and
has been reused for Title 24 purposes.
Economizer Deadband Temp (AC.EC)
The allowed deadband between measured SAT and calculated
SAT when performing economizer self-test. Range is 0 to 10,
default is 4.
Econ Fault Detect Gap (E.GAP)
The discrepancy between actuator command and reported posi-
tion in %. Used to detect actuator stuck/jammed. Range is 2 to
100, default is 5.
Econ Fault Detect Timer (E.TMR)
The timer for actuator fault detection in seconds. Used to de-
tect actuator stuck/jammed. Range is 10 to 240, default is 20.
Excess Air CFM (X.CFM)
The max allowed excess air in CFM. Used to detect excess out-
side air. Range is 400 to 4000, default is 800.
Excess Air Detect Timer (X.TMR)
The timer for excess air detection with a range of 30 to 240.
Default is 150.
ITEM
EC.EN
Economizer Installed?
EC.MN
Economizer Min.Position
EC.MX Economizer Max.Position
E.TRM Economzr Trim For SumZ?
E.SEL Econ ChangeOver Select
DDB.O Diff Dry Bulb RAT Offset
OA.E.C
OA Enthalpy ChgOvr Selct
OA.EN
Outdr.Enth Compare Value
OAT.L High OAT Lockout Temp
O.DEW OA Dewpoint Temp Limit
ORH.S Outside Air RH Sensor
CFM.C OUTDOOR AIR CFM CONTROL
OCF.S
Outdoor Air CFM Sensor
O.C.MX
Economizer Min.Flow
O.C.MN IAQ Demand Vent Min.Flow
O.C.DB Econ.Min.Flow Deadband
OA.RR OACFM Econ Ctrl Run Rate
OA.MP OACFM Econ Ctrl Min Pos
EN.DO
Enable DCFM/OACFM Clamp
E.SAC
Enable Single Act CFM
S.MX.C Single Act. Max CFM
S.M.DB Single Act. Max CFM DB
E.CFG ECON.OPERATION CONFIGS
E.P.GN Economizer Prop.Gain
E.RNG
Economizer Range Adjust
E.SPD
Economizer Speed Adjust
E.DBD Economizer Deadband
UEFC UNOCC.ECON.FREE COOLING
FC.CF Unoc Econ Free Cool Cfg
FC.TM Unoc Econ Free Cool Time
FC.L.O Un.Ec.Free Cool OAT Lock
ACT.C
ECON.ACTUATOR CONFIGS
SN.1.1 Econ 1 Out Ser Number 1
SN.1.2 Econ 1 Out Ser Number 2
SN.1.3 Econ 1 Out Ser Number 3
Table 54 — Economizer Configuration Table
EXPANSION
T24 AutoTest SF Run Time (AC.MR)
Amount of time to run supply fan before sampling torque or
making torque comparison. Range is 1 to 10, default is 2.
T24 Auto-Test VFD Speed (AC.SP)
Speed to run VFD during economizer auto-component test.
Range is 10 to 50, default is 20.
T24 Auto-Test Econ % Open (AC.OP)
Amount to open each economizer during auto-component test.
Range is 1 to 100. Default is 30.
T24 Auto-Test VFD % Change (VF.PC)
The expected change in torque when damper opens from 0 to
AC.OP and then from AC.OP to 0. Range is 1 to 20, default is 10.
Econ Auto-Test Day (EC.DY)
The day on which to perform automatic economizer test.
Range=NEVER, MON, TUE, WED, THR, FRI, SAT, SUN.
Default is SAT.
Econ Auto=Test Time (EC.TM)
The time at which to perform automatic economizer test. The
range is 0 to 23, default is 2.
SETTING UP THE SYSTEM
The economizer configuration options are under the Local Dis-
play Mode Configuration  ECON. See Table 54.
RANGE UNITS
No/Yes
0 to 100 %
0 to 100 %
No/Yes
0 to 3
0, -2, -4, -6 dF
1 to 5
18 to 28
–40 to 120 dF
50 to 62 dF
Disable/Enable
0 to 2
0 to 25000 CFM
0 to 20000 CFM
200 to 1000 CFM
3 to 120 sec
0 to 10 %
No/Yes
No/Yes
0 to 20000 CFM
0 to 5000 CFM
0.7 to 3.0
0.5 to 5 ^F
0.1 to 10
0.1 to 2 ^F
0 to 2
0 to 720 min
40 to 70 dF
0-9999
0-6
0-9999
76
CCN POINT DEFAULT
ECON_ENA Yes
ECONOMIN 5
ECONOMAX 98
ECONTRIM Yes
ECON_SEL 0
EC_DDBCO 0
OAEC_SEL 4
OAEN_CFG 24
OAT_LOCK 60
OADEWCFG 55
OARHSENS Disable
OCFMSENS 0
OACFMMAX 2000
OACFMMIN 0
OACFM_DB 400
OCFMECRT 20
OCFMECMN 0
EN_DOCFM Yes
ENSACFMC No
SAMAXCFM 7500
SAMAXCDB 2500
EC_PGAIN 1
EC_RANGE 2.5
EC_SPEED 0.75
EC_DBAND 0.5
UEFC_CFG 0
UEFCTIME 120
UEFCNTLO 50
ECN1_SN1 0
ECN1_SN2 0
ECN1_SN3 0