Supply Air Temperature (Sat) Sensor - Carrier 48LC Series Installation Instructions Manual

POINT NAME
Space Temp / Zone Temp
Supply Air Temperature
Outdoor Air Temperature
Space Temperature Offset Pot
Safety Chain Feedback
Compressor Safety Status
Fire Shutdown Status
Enthalpy Status
Humidistat Input Status
Zone Temperature
Indoor Air CO2
Outdoor Air CO2
Space Relative Humidity
Supply Fan Status*
Filter Status*
Door Contact Input*
Occupancy Contact*
Economizer Output
Supply Fan Relay State
Compressor 1 Relay State
Compressor 2 Relay State
Heat Stage 1 Relay State
Heat Stage 2 Relay State
Power Exhaust Relay State
Humidimizer Relay State
LEGEND
AI
--- Analog Input
AO --- Analog Output
DI --- Discrete Input
DO --- Discrete Output
* These inputs (if installed) take the place of the default input on the specific channel according to schematic.
Parallel pins J5--- 1 = J2--- 6, J5--- 3 = J1--- 10, J5--- 5 = J1--- 2 are used for field --- installation.
The RTU Open controller requires the use of a Carrier
space sensor. A standard thermostat cannot be used with
the RTU Open system.
Supply Air Temperature (SAT) Sensor —
On FIOP- - equipped 48LC unit, the unit is supplied with a
supply- - air temperature (SAT) sensor (33ZCSENSAT).
This sensor is a tubular probe type, approx 6- - inches (152
mm) in length. It is a nominal 10- - k ohm thermistor.
The SAT is factory- - wired. The SAT probe is wire- - tied to
the supply- - air opening (on the horizontal opening end) in
its shipping position. Remove the sensor for installation.
Re- - position the sensor in the flange of the supply- - air
opening or in the supply air duct (as required by local
1
codes). Drill or punch a /
2
Use two field- - supplied, self- - drilling screws to secure the
sensor probe in a horizontal orientation. See Fig. 53.
Table 4 – RTU Open Controller Inputs and Outputs
BACnet OBJECT
NAME
DEDICATED INPUTS
zone_temp
sa_temp
oa_temp
stpt_adj_offset
safety_status
comp_status
firedown_status
enthalpy_status
humstat_status
n/a
CONFIGURABLE INPUTS
iaq
oaq
space_rh
sfan_status
filter_status
door_contact_status
occ_contact_status
econ_output
sfan
comp_1
comp_2
heat_1
heat_2
pexh
dehum
- - in. hole in the flange or duct.
TYPE OF I/O
AI (10K Thermistor)
AI (10K Thermistor)
AI (10K Thermistor)
AI (100K Potentiometer)
DI (24 VAC)
DI (24 VAC)
DI (24 VAC)
DI (24 VAC)
DI (24 VAC)
n/a
AI (4--- 20 ma)
AI (4--- 20 ma)
AI (4--- 20 ma)
DI (24 VAC)
DI (24 VAC)
DI (24 VAC)
DI (24 VAC)
OUTPUTS
AO (4--- 20ma)
DO Relay (24VAC , 1A)
DO Relay (24VAC , 1A)
DO Relay (24VAC , 1A)
DO Relay (24VAC , 1A)
DO Relay (24VAC , 1A)
DO Relay (24VAC , 1A)
DO Relay (24VAC, 1A)
SUPPLY AIR
TEMPERATURE
SENSOR
Fig. 53 - - Typical Mounting Location for Supply Air
Temperature (SAT) Sensor on Small Rooftop Units
34
CONNECTION PIN
NUMBER(S)
J20--- 1 & 2
J2--- 1 & 2
J2--- 3 & 4
J20--- 3 & 4
J1--- 9
J1--- 2
J1--- 10
J2--- 6 & 7
J5--- 7 & 8
J13--- 1, 2, 3, 4
J4--- 2 & 3 or J4--- 5 & 6
J5--- 1 or J5--- 3 or J5--- 5
J2--- 5
J1--- 4
J1--- 8
J1--- 7
J1--- 6
J1--- 5
J11--- 1 & 3
J11--- 7, 8
SUPPLY AIR RETURN AIR
ROOF
CURB
C08200