Bryant 180CNV024, Руководство по установке

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11
Outdoor Coil Thermistor
The outdoor coil thermistor is a 10Kohm resistor used for multiple
system operations. It provides the coil/liquid line temperature to
the control board and wall control. Low ambient operation and
assistance with OAT temperature measurement of some of the
functions. The sensor must be securely mounted to the tube
connecting OD coil distributor. See Fig. 11 for proper placement.
See Table 4 for proper resistances.
OAT Thermistor must be
locked in place with
spherical nib end facing
towards the front of the
control box
A11142
Fig. 11 -- OAT Thermistor Location (Bottom of Control Box)
A170293
Fig. 12 -- Outdoor Coil Thermistor (OCT) Attachment
(On Distributor Tube)
Suction Thermistor (OST)
Suction Thermistor is used for compressor protection and must be
secured on the suction tube and aligned longitudinally to the
vertical surface of the tube axis (see Fig. 13).
A170294
Fig. 13 - Suction Thermistor (OST) Attachment
(On Suction Tube)
CAUTION
!
UNIT DAMAGE HAZARD
Failure to follow this caution may result in equipment
damage or improper operation.
In order to minimize the ambient influence, make sure the
thermistor curved surface hugs the pipe surface and is
secured tight using the wire tie fished through the original
slot insulating polymer body.
Variable Speed Compressor Sensor Output Terminals
This compressor has a motor thermistor and a scroll thermistor.
Correct resistance between scroll thermistor terminal and common
is 10k at 77
_
F (25
_
C). Correct resistance between motor
thermistor terminal and common is 5k at 77
_
F (25
_
C).
Variable Speed Compressor Power Input Terminals
This compressor operates with a 3--phase variable frequency PWM
variable voltage to the three fusite terminals.
Table 5 – Variable Speed Compressor Resistances
(winding resistance at 70
_
F

20
_
F)
WINDING
180CNV024
180CNV036
180CNV048
180CNV060
Between terminals
T1, T2, and T3
.681 .203
Between terminal &
ground
>1 mega OHM >1 mega OHM
UNIT DAMAGE HAZARD
Failure to follow this caution may result in equipment damage
and/or improper operation.
Do not use Meggar for measuring the winding resistance.
CAUTION
!