Dc Conductors; Factory-Provided Sensors - Trane Horizon OADG Series Installation, Operation And Maintenance Manual

Installation
refer to Figure 38, p. 33 for the electrical access locations
provided on the unit.
1. Table 7 lists the conductor sizing guidelines that must
be followed when interconnecting the DC binary
output devices and the system components utilizing a
DC analog input\output signal to the unit.
Note: Resistance in excess of 2.5 ohms per conductor
can cause deviations in the accuracy of the
controls.
2. Ensure that the wiring between controls and the unit's
termination point does not exceed 2.5 ohms/
conductor for the length of the run.
3. Do not run the electrical wires transporting DC signals
in or around conduit housing high voltage wires.
Figure 40. OAUTS Connection B
FOR THUMBWHEEL DO NOT USE
TEMPERATURE SENSOR IN
BAYSENSE036, INSTEAD USE
BAYSENSE074.
REMOVE JUMPER AND INSTALL FIELD
SUPPLIED DRY CONTACT OR SWITCH.
CLOSURE BETWEEN OAUTS-7 AND OAUTS-8
ENABLES "OCCUPIED MODE".
DISCHARGE AIR TEMPERATURE SENSOR

Factory-Provided Sensors

A discharge temperature sensor (VELSEN-0021) will be
factory-provided for field installation in the supply duct.
Refer to Figure 47, p. 74 for installation instructions.
If space control is selected, a combination space
temperature/humidity sensor (BAYSENS036A) will be
factory-provided for field installation in the space. Refer to
Figure 48, p. 75 for installation instructions.
If multi-zone VAV control is selected, a static pressure
sensor (VELCON-0350) will be factory-provided for field
38
BAYSENS036A
VELSEN-0018
(TEMP/HUM
COMBO SENSOR)
SPTC SPTC
t°
BAYSENS074A
VTSP
VELSEN-0049
(THUMBWHEEL)
FIELD INSTALLED
WATER VALVES
TEMP. ONLY: TEMP./HUM.:
VELSEN-0021 VELCON-0608
TE-DFG-B1244-00 RHP-3D1B
DTC
t°

DC Conductors

Table 7. Zone sensor module wiring
Distance from Unit to Control
000–150 feet
0–45.7 m
151–240 feet
46–73.1 m
241–385 feet
73.5–117.3 m
386–610 feet
117.7–185.9 m
611–970 feet
186.2–295.7 m
FACTORY
SUPPLIED
VELCON-0976
JUMPER
BA/ZPM-SR-ST-D
GND
OAUTS
OUT
1 2
VELSEN-0024
3 4 BAYSENS036A
5 6 SPHC
H
7 8
TO SHUT DOWN THE UNIT FOR EMERGENCY STOP,
9 10
REMOVE JUMPER FROM OAUTS-9 AND OAUTS-10 AND
INSTALL FIELD SUPPLIED DEVICE.
11 12
13 14
15 16
18
17
SR DPC
19 20
V+
21 22
OUT
23 24
GND
VELCON-0976
BA/ZPM-SR-ST-D
installation in the supply duct or space. Refer to
p. 77 for installation instructions.
If modulating OA/RA dampers w/economizer and an
exhaust fan are selected, a duct static pressure sensor
(VELCON-0350) will be factory-provided for field
installation in the return duct. Refer to
installation instructions.
Recommended Wire Size
22 gauge
0.33 mm
20 gauge
0.50 mm
18 gauge
0.75 mm
16 gauge
1.3 mm
14 gauge
2.0 mm
SDPC
V+
VELCON-0608
RHP-3D1B
DRHC
H
Figure 50, p. 77
2
2
2
2
2
Figure 50,
for
OAU-SVX006E-EN