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97
Table 63 —
Sensor Trim Configuration
4 to 20 mA Inputs
There are a number of 4 to 20 mA inputs which may be cali
-
brated. These inputs are located in
Inputs
4-20
. They are:
•
SP.M.T
— static pressure milliamp trim
•
BP.M.T
— building pressure milliamp trim
•
OA.M.T
— outside air cfm milliamp trim
•
RA.M.T
— return air cfm milliamp trim
•
SA.M.T
— supply air cfm milliamp trim
Discrete Switch Logic Configuration
The
SW.LG
submenu is used to configure the normally open/
normally closed settings of switches and inputs. This is used
when field-supplied switches or input devices are used instead
of Carrier devices. The normally open or normally closed set
-
ting may be different on a field-supplied device. These points
are used to match the control logic to the field-supplied device.
The defaults for this switch logic section will not normally
need changing. However, if a field-installed switch is used that
is different from the Carrier switch, these settings may need ad
-
justment.
Settings for switch logic are found at the local displays under
the
Configuration
IAQ
SW.LG
submenu. See Table 64.
Filter Status Input — Clean (MFT.L)
The filter status input for clean filters is set for normally open.
If a field-supplied filter status switch is used that is normally
closed for a clean filter, change this variable to closed.
Post Filter Status Input — Clean (PFT.L)
The filter status input for clean filters is set for normally open.
If a field-supplied filter status switch is used that is normally
closed for a clean filter, change this variable to closed.
IGC Feedback — Off (IGC.L)
The input for IGC feedback is set for normally open for off. If a
field-supplied IGC feedback switch is used that is normally
closed for feedback off, change this variable to closed.
Remote Switch — Off (RMI.L)
The remote switch is set for normally open when off. If a field-
supplied control switch is used that is normally closed for an
off signal, change this variable to closed.
Enthaply Input — Low (ENT.L)
The enthalpy input is set for normally closed when low. If a
field-supplied enthalpy switch is used that is normally open
when low, change this variable to open.
Fan Status Switch — Off (SFS.L)
The fan status switch input is set for normally open for off. If a
field-supplied fan status switch is used that is normally closed,
change this variable to closed.
Demand Limit Switch 1 — Off (DL1.L)
The demand limit switch no. 1 input is set for normally open
for off. If a field-supplied demand limit switch is used that is
normally closed, change this variable to closed.
Demand Limit Switch 2 — Off (DL2.L)
The demand limit switch no. 2 input is set for normally open
for off. If a field-supplied demand limit switch is used that is
normally closed, change this variable to closed.
IAQ Discrete Input — Low (IAQ.L)
The IAQ discrete input is set for normally open when low. If a
field-supplied IAQ discrete input is used that is normally
closed, change this variable to closed.
Fire Shutdown — Off (FSD.L)
The fire shutdown input is set for normally open when off. If a
field-supplied fire shutdown input is used that is normally
closed, change this variable to closed.
Pressurization Switch — Off (PRS.L)
The pressurization input is set for normally open when off. If a
field-supplied pressurization input is used that is normally
closed, change this variable to closed.
Evacuation Switch — Off (EVC.L)
The evacuation input is set for normally open when off. If a
field-supplied evacuation input is used that is normally closed,
change this variable to closed.
Smoke Purge — Off (PRG.L)
The smoke purge input is set for normally open when off. If a
field-supplied smoke purge input is used that is normally
closed, change this variable to closed.
Dehumidify Switch — Off (DH.LG)
The dehumidify input is set for normally open when off. If a
field-supplied dehumidify input is used that is normally closed,
change this variable to closed.
SF Bypass Switch — Off (SFB.L)
The Supply Fan bypass switch is normally open when off. It al
-
lows operation of the supply fan through a bypass of the supply
fan VFD.
PE Bypass Switch — Off (PEB.L)
The Power Exhaust bypass switch is normally open when off.
It allows for operation of the exhaust fan through a bypass of
the exhaust fan VFD.
ITEM
EXPANSION
RANGE
UNITS
CCN POINT
DEFAULT
TRIM
SENSOR TRIM CONFIG.
SAT.T
Air Temp Lvg SF Trim
-10 to 10
^F
SAT_TRIM
0
RAT.T
RAT Trim
-10 to 10
^F
RAT_TRIM
0
OAT.T
OAT Trim
-10 to 10
^F
OAT_TRIM
0
SPT.T
SPT Trim
-10 to 10
^F
SPT_TRIM
0
L.SW.T
Limit Switch Trim
-10 to 10
^F
LSW_TRIM
0
CCT.T
Air Temp Lvg Evap Trim
-10 to 10
^F
CCT_TRIM
0
DTA.1
A1 Discharge Temp Trim
-10 to 10
^F
DTA1TRIM
0
SP.A.T
Suct.Press.Circ.A Trim
-50 to 50
^F
SPA_TRIM
0
SP.B.T
Suct.Press.Circ.B Trim
-50 to 50
^F
SPB_TRIM
0
DP.A.T
Dis.Press.Circ.A Trim
-50 to 50
^F
DPA_TRIM
0
DP.B.T
Dis.Press.Circ.B Trim
-50 to 50
^F
DPB_TRIM
0
LP.A.T
Lqd.Press.Circ.A Trim
-50 to 50
^F
LPA_TRIM
0
LP.B.T
Lqd.Press.Circ.B Trim
-50 to 50
^F
LPB_TRIM
0
IMPORTANT: Many of the switch inputs to the control can
be configured to operate as normally open or normally
closed.
Summary of Contents for WeatherExpert 48N2
Page 135: ...135 Fig 18 48 50N Typical Power Schematic Nominal 075 Ton Unit Shown ...
Page 136: ...136 Fig 19 48 50N Typical Power Schematic Nominal Ton 90 150 Units Shown ...
Page 137: ...137 Fig 20 48 50N Main Base Board Input Output Connections ...
Page 138: ...138 Fig 21 48 50N RXB EXB CEM Input Output Connections a48 9307 ...
Page 139: ...139 Fig 22 48 50N EXV SCB Input Output Connections a48 9308 ...
Page 140: ...140 Fig 23 48N Typical Modulating Gas Heat Unit Control Wiring ...
Page 141: ...141 Fig 24 50N Typical Electric Heat Unit Control Wiring ...
Page 144: ...144 Fig 27 48N Typical Gas Heat Section Wiring Nominal Ton 120 to 150 Units ...
Page 145: ...145 Fig 28 48 50N Typical Power Component Control Wiring 460 v ...
Page 146: ...146 Fig 29 48 50N Component Control Wiring 575 v Nominal Ton 075 to 150 Units ...
Page 147: ...147 Fig 30 48 50N Component Arrangement Power Box ...
Page 148: ...148 Fig 31 48 50N Component Arrangement Control Box ...
Page 240: ...240 APPENDIX D VFD INFORMATION CONT Fig G VFD Bypass Wiring Diagram WHEN USED ...