45
Table21 – RTU--MP Controller Inputs and Outputs
POINTNAME BACnetOBJECT
NAME TYPE OF I/O CONNECTIONPIN
NUMBERS
INPUTS
Space TemperatureSensor sptsens AI (10K Thermistor) J2 0 ---1 , 2
SupplyAir Temperature sat AI (10K Thermistor) J2 --- 1, 2
LocalOutside Air Temperature Sensor oatsens AI(10K Thermistor) J 2 ---3 , 4
Space TemperatureOffset Pot sptopot AI (100K Potentiometer) J2 0 --- 3
Indoor Air Quality iaq AI (4 ---2 0 ma ) J4 --- 2, 3
Outdoor Air Quality oaq AI (4 ---2 0 ma ) J4 --- 5, 6
SafetyChain Feedback safety DI (24 VAC) J1--- 9
Compressor Safety compstat DI (24 VAC) J1--- 2
FireShutdown firedown DI (24 VAC) J1 --- 10
EnthalpySwitch enthalpy DI (24 VAC) J2 --- 6, 7
HumidistatInput Status humstat DI(24 VAC) J 5 ---7 , 8
CONFIGURABLE INPUTS*
SpaceR elative Humidity sprh A I (4 ---2 0 ma ) J4---2,3or J4 ---5,6
Outside Air Relative Humidity oarh AI (4 --- 2 0 m a )
SupplyFan Status fanstat DI(24 VAC) J 5--- 1 , 2 o r J5 ---3 , 4 or
J5 5,6 orJ 5---7,8
FilterStatus filtstat DI(24 VAC)
RemoteOccupancy Input remocc DI (24 VAC)
OUTPUTS
Economizer Commanded Position econocmd 4 --- 20m a J2--- 5
SupplyFanRelayState sf DO Relay (24VAC , 1A) J1 ---4
Compressor 1 Relay State comp_1 DO Relay(24VAC , 1A) J 1 ---8
Compressor 2 Relay State comp_2 DO Relay(24VAC , 1A) J 1 ---7
HeatStage 1 R elay State heat_1 DO Relay (24VAC , 1A) J 1 --- 6
HeatStage 2 R elay State heat_2 DO Relay (24VAC , 1A) J 1 --- 5
PowerEx haust Relay State aux_2 DO Relay (24VAC , 1A) J 1 1 ---3
Dehumidification Relay State humizer DO Relay (24VAC, 1A) J11 --- 7, 8
LEGEND
AI --- An a lo g In p u t
AO --- An a lo g O u tp ut
DI --- Dis c r e t e In p u t
DO --- Discrete Output
* Theseinputs (if installed) take the place of the def ault input on the specific channel according to sch ematic.
Par a ll el pi ns J 5--- 1 = J 2 --- 6 , J 5 --- 3 = J1 --- 1 0, J5 --- 5 = J 1 --- 2 a r e u se d fo r f ie ld --- i n st al la t io n.
Referto the input configuration and accessorysections for more detail.
NOTE: Refer to Form 48--50H--T--2T for complete
configuration of RTU--MP, operating sequences and
troubleshooting information. Refer to RTU--MP3rd Party
Integration Guide for details on configuration and
troubleshooting of connected networks. Have a copy of
these manuals available at unit start--up.
The RTU-- MP controller requires the use of a Carrier
space sensor. A standard thermostat cannot be used with
the RTU--MPsystem.
Supply Air Temperature (SAT) Sensor -- On
FIOP--equipped 48TC unit, the unit is supplied with a
supply--air temperature (SAT) sensor (33ZCSENSAT).
This sensor is a tubular probe type, approx 6--inches(12.7
mm) in length. It is a nominal 10--kohm thermistor. See
Table15 for temperature--resistancecharacteristic.
The SATis factory--wired.T heSAT probe is wire--tiedto
the supply--airopening (on the horizontal opening end) in
its shipping position. Remove the sensor for installati on.
Re--position the sensor in the flange of the supply--air
opening or in the supply air duct (as required by local
codes). Drill or punch a 1/2--in. hole in the flange or duct.
Use two field--supplied, self--drilling screws to securethe
sensor probe in a horizontal orientation. See Fig. 41.
Outdoor Air Temperature (OAT) Sensor -- The OAT is
factory--mounted in the EconoMi$er 2 (FIOP or
accessory).It is a nominal 10k ohm thermistor attached to
an eyelet mounting ring. See Table 15 for
temperature-- resistancecharacteristic.
EconoMi$er 2 -- The RTU--MP control is used with
EconoMi$er2 (option or accessory) for outdoor air
management. The damper position is controlled directly
by the RTU--MP control; EconoMi$er 2 has no internal
logic device.
Outdoor air management functions can be enhanced with
field--installationof these accessory controldevices:
Enthalpy control (outdoor air or differential sensors)
Space CO2sensor
Outdoor air CO2sensor
Field Connections -- Field connections for accessory
sensors and input devices are made the RTU--MP,at plugs
J1, J2, J4, J5, J11 and J20. All field control wiring that
48TC