Carrier GTR040-420 Dokumentacja Strona 12

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12
T1 — COOLER LEAVING FLUID SENSOR — This ther-
mistor is located in the leaving fluid nozzle. The thermistor
probe is inserted into a friction-fit well.
T2 — COOLER ENTERING FLUID SENSOR — This
thermistor is located in the cooler shell in the first baffle space
in close proximity to the cooler tube bundle.
T3, T4 — SATURATED CONDENSING TEMPERATURE
SENSORSThese 2 thermistors are clamped to the outside
of a return bend of the condenser coils.
T5, T6 — COOLER SUCTION TEMPERATURE SEN-
SORS — These thermistors are located next to the refrigerant
inlet in the cooler head, and are inserted into a friction-fit well.
The sensor well is located directly in the refrigerant path. These
thermistors are not used on units with TXVs.
T7, T8 — COMPRESSOR SUCTION GAS TEMPERA-
TURE SENSORS These thermistors are located in the lead
compressor in each circuit in a suction passage after the refrig-
erant has passed over the motor and is about to enter the cylin-
ders. These thermistors are inserted into friction-fit wells. The
sensor wells are located directly in the refrigerant path. These
thermistors are not used on units with TXVs.
T9 — OUTDOOR-AIR TEMPERATURE SENSOR —
Sensor T9 is an accessory sensor that is remotely mounted and
used for outdoor-air temperature reset (HN79NZ023).
040-110*
130-210*
MIN. 6 OF 22 AWG WIRES
WITH ENDS STRIPPED BACK
.25 ±1/8
1/2 PVC SHIELD
1/2 NPT MALE
THREADED ADAPTER
3/16 DIA.
THERMOWELL (S.S.)
REF.
.83 D
(21.1)
REF.
1.81
(46.0)
REF.
5.75
(146.1
OUTDOOR
TEMPERATURE
SENSOR
(HN79NZ023)
LEGEND
*And associated modular units.
AWG
American Wire Gage
EXV
Electronic Wire Gage
Fig. 7 Cooler Thermistor Locations and Accessory Outdoor-Air Temperature Sensor Detail
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