Trane Horizon OABD Series Installation, Operation And Maintenance Manual page 111

Figure 152. Return duct/space pressure transducer (RDSPC)
RETURN DUCT/SPACE PRESSURE TRANSDUCER (SR DPC)
GENERAL:
RDSPC IS USED TO CONTROL EXHAUST FAN SPEED BASED ON STATIC PRESSURE. DEFAULT FOR RDSPC IS 0-2" WC TO
0-10VDC. ANY OTHER SETTING MUST BE CHANGED WITHIN THE MAIN UNIT CONTROLLER.
FACTORY SUPPLIED TRANSDUCER IS NOT RECOMMENDED FOR CONTROLLING TO SPACE PRESSURE. IF SPACE
PRESSURE CONTROL IS DESIRED, USE A TRANSDUCER WITH A RANGE OF -0.5 TO 5" WC FOR PROPER OPERATION AND
RE-CONFIGURE THE MAIN UNIT CONTROLLER.
INSTALLATION:
1. VERIFY DIP SWITCH AND DIAL SETTINGS ACCORDING TO CHART BELOW.
2. MOUNT TRANSDUCER ON THE EXTERIOR OF THE DUCT AT LEAST 4 FT FROM THE UNIT.
3. INSTALL SAMPLING TUBE ONTO THE DUCT AND CONNECT TUBING TO PORT "L" ON TRANSDUCER.
4. LEAVE PORT "H" ON TRANSDUCER OPEN.
5. RUN WIRING FROM THE TRANSDUCER TO THE FIELD WIRING TERMINAL (OAUTS) STRIP USING COPPER
CONDUCTORS ONLY.
6. LAND THE WIRING ON FIELD WIRING TERMINAL STRIP ACCORDING TO THE CHART BELOW.
KCC PART NUMBER: VELCON-0976
SENSOR MODEL NUMBER: BA/ZPM-SR-ST-D
TRANSDUCER SETTINGS
O3 = 0-10 VOLTS
R2 = 2"WC
#1 OFF = UNIDIRECTIONAL
#2 OFF = INCHES
#3 OFF = SLOW
O4 R4
O5 R5
O3 R3
O2 R2
O1 R1
KCC PART NUMBER: VELCON-0067
SENSOR MODEL NUMBER: 22ADP-584L
TRANSDUCER SETTINGS
#1 ON = 0-2" WC ON
#2 OFF = 0-2" WC
#3 OFF = 0-2" WC
#4 ON = SLOW
1 2 3
#5 OFF = 0-10 VOLTS
OFF
#6 ON = INCH WC
UPDATED 12/1/2021
REV. D
OAU-SVX007A-EN
(
OAUTS WIRING
OAUTS-21 -- PWR
OAUTS-22 -- VOUT
OAUTS-24 -- GND
ON
1 2 3
OFF
4 5 6
) ( )
LINES 94 ON UNIT WIRING DIAGRAM
SR DPC
OAUTS-22 OUT V+
GND
TYPICAL DUCT
INSTALLATION
RETURN DUCT STATIC
PRESSURE TRANSDUCER
RETURN DUCT
LOW VOLTAGE FIELD WIRING
SUPPLY DUCT
Appendix
OAUTS-21
OAUTS-24
NOTE: ROOF
NOT SHOWN
ROOF CURB
111