Sensor Trim Configuration - Carrier WEATHERMAKER 48J Started Manual

then Alert309 will occur. The unitwillcontinue torunand the
alert w illautomatically reset.
Supply Duct Pressure Low Alert Limit (SRL) -- If the unit
is a VAV unit with a supply duct pressure sensor and the mea-
sured supply duct static pressure is below the configurable SP
Low Alert Limit (DRL), then Alert 310 will occur. The unit
will continue to run and the alert will automatically reset.
Supply Duct Pressure High Alert Limit (SRH) -- If the unit
is a VAV unit with a supply duct pressure sensor and the mea-
sured supply duct static pressure is above the configurable SP
High Alert Limit (SRH), then Alert 311 will occur. The unit
will continue to run and the alert will automatically reset.
Building Pressure Low Alert Limit (BRL) -- If the unit is
configured to use modulating power exhaust then a building
static pressure limit can be configured using the BP Low Alert
Limit (BRL). If the measured pressure is below the limit then
Alert 312 will occur.
Building Pressure High Alert Limit (BRIg) -- If the unit is
configured to use modulating power exhaust then a building
static pressure limit can be configured using the BP Hi Alert
Lilnit (BRIg). If the measured pressure is above the lilnit, then
Alert 313 will occur.
Indoor Air Quality High Alert Limit (//1(2.[1) -- If the unit
is configured to use a CO2 sensor and the level is above the
configurable IAQ High Alert Lilnit (IAQ.H) then the alert will
occur. The unit will continue to run and the alert will automati-
cally reset.
Sensor Trim Configuration E The
TRIM submenu
is used to calibrate the sensor triln settings. The triln settings
are used when the actual measured reading does not match the
sensor output. The sensor can be adjusted to match the actual
measured reading with the trim function. A list is shown in
Table 88.
IMPORTANT: Sensor trim must not be used to extend
unit operation past the allowable operating range.
Doing so may void the warranty.
Air Temperature Leaving Supply Fan Sensor (SAT.T) -- This
variable is used to adjust the supply fan temperature sensor
reading. The sensor reading can be adjusted 4- 10 o F to match
the actual measured temperature.
Return Air Temperature Sensor Trim (RAT.T) -- This vari-
able is used to adjust the return air temperature sensor reading.
The sensor reading can be adjusted 4- 10 o F to match the actual
measured temperature.
Outdoor Air Temperature Sensor Trim (OAT. T) --This vari-
able is used to adjust the outdoor air temperature sensor read-
ing. The sensor reading can be adjusted 4- 10 o F to match the
actual measured temperature.
Space Temperature Sensor Trim (SPT.T) -- This variable is
used to adjust the space temperature sensor reading. The sensor
reading can be adjusted 4- 10 o F to match the actual measured
temperature.
Circuit A Saturated Condenser Temperature Trim (CTA. T) --
This variable is used to adjust the saturated condenser tempera-
ture sensor reading for circuit A. The sensor reading can be
adjusted 4- 30 ° F to match the actual measured temperature.
Used on 48/50AJ,AK,AW, AY units only.
Circuit B Saturated Condenser Temperature Trim (CTB. T) --
This variable is used to adjust the saturated condenser tempera-
ture sensor reading for circuit B. The sensor reading can be
adjusted 4- 30 ° F to match the actual measured temperature.
Used on 48/50AJ,AK,AW, AY units only.
Suction Pressure Circuit A Trim (SRA. T) -- This variable is
used to adjust the suction pressure sensor reading for circuit A.
The sensor reading can be adjusted 4- 50 psig to match the actu-
al measured pressure.
Suction Pressure Circuit B Trim (SRB. T) -- This variable is
used to adjust the suction pressure sensor reading for circuit B.
The sensor reading can be adjusted 4- 50 psig to match the actu-
al measured pressure.
Table 87 -- Alert Limit Configuration
ITEM
SP.L.O
SP.H.O
SP.L.U
SP.H.U
SA.L.O
SA.H.O
SA.L.U
SA.H.U
RA.L.O
RA.H.O
RA.L.U
RA.H.U
R.RH.L
R.RH.H
SP.L
SP.H
BP.L
BP.H
IAQ.H
EXPANSION
SPT Io alert limit/occ
SPT hi alert limit/occ
SPT Io alert limit/unocc
SPT hi alert limit/unocc
EDT Io alert limit/occ
EDT hi alert limit/occ
EDT Io alert limit/unocc
EDT hi alert limit/unocc
RANGE
-10-245
-10-245
-10-245
-10-245
-40-245
-40-245
-40-245
-40-245
dF
dF
dF
dF
dF
dF
dF
dF
UNITS DEFAULT POINT
SPLO
SPHO
SPLU
SPHU
SALO
SAHO
SALU
SAHU
RAT Io alert limit/occ
RAT hi alert limit/occ
RAT Io alert limit/unocc
RAT hi alert limit/unocc
RARH low alert limit
RARH high alert limit
SP low alert limit
SP high alert limit
BP Io alert limit
BP high alert limit
IAQ high alert limit
-40-245
-40-245
-40-245
-40-245
0-1 O0
0-1 O0
0-5
0-5
-0.25-0.25
-0.25-0.25
0-5000
dF
dF
dF
dF
%
%
"H20
"H20
"H20
"H20
RALO
RAHO
RALU
RAHU
RRHL
RRHH
SPL
SPH
BPL
BPH
IAQH
60
85
45
1O0
40
1O0
40
1O0
60
90
40
1O0
0
1O0
0
2
-0.25
0.25
1200
Table 88 -- Sensor Trim Configuration
ITEM
SAT.T
RAT.T
OAT.T
SPT. T
CTA. T
CTB.T
SP.A. T
SP.B.T
DP.A. T
DP.B.T
EXPANSION
Air Temp Lvg SF Trim
RAT Trim
OAT Trim
SPT Trim
Cir A Sat. Cond. Temp Trim
Cir B Sat. Cond. Temp Trim
Suct.Press.Circ.A Trim
Suct.Press.Circ.B Trim
Dis.Press.Circ.A Trim
Dis.Press.Circ.B Trim
RANGE
-10 - 10
-10 - 10
-10 - 10
-10 - 10
-30 - 30
-30 - 30
-50 - 50
-50 - 50
-50 - 50
-50 - 50
UNITS
^F
^F
^F
^F
^F
^F
PSIG
PSlG
PSlG
PSlG
POINT
SAT_TRIM
RAT_TRIM
OAT_TRIM
SPT TRIM
SCT_, TRIM
SCTB TRIM
SPA -I=RIM
SPB TRIM
DPA TRIM
DPB_TRIM
DEFAULT
0
0
0
0
0
0
0
0
0
0
73