Carrier WEATHERMAKER 48/50AJ - Manual (Page 73)

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then Alert 309 will occur. The unit will continue to run and the
alert will automatically reset.
Supply Duct Pressure Low Alert Limit (SP.L) — 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 (DP.L), then Alert 310 will occur. The unit
will continue to run and the alert will automatically reset.
Supply Duct Pressure High Alert Limit (SP.H) — 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 (SP.H), then Alert 311 will occur. The unit
will continue to run and the alert will automatically reset.
Building Pressure Low Alert Limit (BP.L) — 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 (BP.L). If the measured pressure is below the limit then
Alert 312 will occur.
Building Pressure High Alert Limit (BP.H) — If the unit is
configured to use modulating power exhaust then a building
static pressure limit can be configured using the BP Hi Alert
Limit (BP.H). If the measured pressure is above the limit, then
Alert 313 will occur.
Indoor Air Quality High Alert Limit (IAQ.H) — If the unit
is configured to use a CO
2
sensor and the level is above the
configurable IAQ High Alert Limit (IAQ.H) then the alert will
occur. The unit will continue to run and the alert will automati-
cally reset.
Sensor Trim Configuration — The TRIM submenu
is used to calibrate the sensor trim settings. The trim 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.
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 ± 10° 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 ± 10° 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 ± 10° 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 ± 10° 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 ± 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 ± 30° F to match the actual measured temperature.
Used on 48/50AJ,AK,AW,AY units only.
Suction Pressure Circuit A Trim (SP.A.T) — This variable is
used to adjust the suction pressure sensor reading for circuit A.
The sensor reading can be adjusted ± 50 psig to match the actu-
al measured pressure.
Suction Pressure Circuit B Trim (SP.B.T) — This variable is
used to adjust the suction pressure sensor reading for circuit B.
The sensor reading can be adjusted ± 50 psig to match the actu-
al measured pressure.
Table 87 — Alert Limit Configuration
Table 88 — Sensor Trim Configuration
IMPORTANT: Sensor trim must not be used to extend
unit operation past the allowable operating range.
Doing so may void the warranty.
ITEM EXPANSION RANGE UNITS POINT DEFAULT
SP.L.O SPT lo alert limit/occ -10-245 dF SPLO 60
SP.H.O SPT hi alert limit/occ -10-245 dF SPHO 85
SP.L.U SPT lo alert limit/unocc -10-245 dF SPLU 45
SP.H.U SPT hi alert limit/unocc -10-245 dF SPHU 100
SA.L.O EDT lo alert limit/occ -40-245 dF SALO 40
SA.H.O EDT hi alert limit/occ -40-245 dF SAHO 100
SA.L.U EDT lo alert limit/unocc -40-245 dF SALU 40
SA.H.U EDT hi alert limit/unocc -40-245 dF SAHU 100
RA.L.O RAT lo alert limit/occ -40-245 dF RALO 60
RA.H.O RAT hi alert limit/occ -40-245 dF RAHO 90
RA.L.U RAT lo alert limit/unocc -40-245 dF RALU 40
RA.H.U RAT hi alert limit/unocc -40-245 dF RAHU 100
R.RH.L RARH low alert limit 0-100 % RRHL 0
R.RH.H RARH high alert limit 0-100 % RRHH 100
SP.L SP low alert limit 0-5 "H2O SPL 0
SP.H SP high alert limit 0-5 "H2O SPH 2
BP.L BP lo alert limit -0.25-0.25 "H2O BPL -0.25
BP.H BP high alert limit -0.25-0.25 "H2O BPH 0.25
IAQ.H IAQ high alert limit 0-5000 IAQH 1200
ITEM EXPANSION RANGE UNITS POINT DEFAULT
SAT.T Air Temp Lvg SF Trim -10 - 10 ^F SAT_TRIM 0
RAT.T RAT Trim -10 - 10 ^F RAT_TRIM 0
OAT.T OAT Trim -10 - 10 ^F OAT_TRIM 0
SPT.T SPT Trim -10 - 10 ^F SPT_TRIM 0
CTA.T Cir A Sat. Cond. Temp Trim -30 - 30 ^F SCTA_TRIM 0
CTB.T Cir B Sat. Cond. Temp Trim -30 - 30 ^F SCTB_TRIM 0
SP.A.T Suct.Press.Circ.A Trim -50 - 50 PSIG SPA_TRIM 0
SP.B.T Suct.Press.Circ.B Trim -50 - 50 PSIG SPB_TRIM 0
DP.A.T Dis.Press.Circ.A Trim -50 - 50 PSIG DPA_TRIM 0
DP.B.T Dis.Press.Circ.B Trim -50 - 50 PSIG DPB_TRIM 0