Installation
38 OAU-SVX006E-EN
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
b
e
followed when interconnecting the DC binary
output devices and the system components utilizing a
DC analog input\output signal to the unit.
Note: Resis
tance in exc
ess of 2.5 ohms per conductor
can cause deviations in the accuracy of the
controls.
2. Ensure that the wiri
ng
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.
DC Conductors
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
temp
erature/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-0
350) will
be factory-provided for field
installation in the supply duct or space. Refer to Figure 50,
p. 77 for installation instructions.
If modulating OA/RA dampers w/economizer and an
e
xhaust fan are selected, a duct static pressure sensor
(VELCON-0350) will be factory-provided for field
installation in the return duct. Refer to Figure 50, p. 77 for
instal
lation instructions.
Table 7. Zone sensor m
odule wiring
Distance from Unit to Control Recommended Wire Size
000–150 feet
0–45.7 m
22 gauge
0.33 mm
2
151–240 feet
46–73.1 m
20 gauge
0.50 mm
2
241–385 feet
73.5–117.3 m
18 gauge
0.75 mm
2
386–610 feet
117.7–185.9 m
16 gauge
1.3 mm
2
611–970 feet
186.2–295.7 m
14 gauge
2.0 mm
2
Figure 40. OAUTS Connection B
OAUTS
12
34
56
78
910
11 12
13 14
15 16
17
18
19 20
21 22
23
24
REMOVE JUMPER AND INSTALL FIELD
SUPPLIED DRY CONTACT OR SWITCH.
CLOSURE BETWEEN OAUTS-7 AND OAUTS-8
ENABLES "OCCUPIED MODE".
TO SHUT DOWN THE UNIT FOR EMERGENCY STOP,
REMOVE JUMPER FROM OAUTS-9 AND OAUTS-10 AND
INSTALL FIELD SUPPLIED DEVICE.
FACTORY
SUPPLIED
JUMPER
TEMP./HUM.:
VELCON-0608
RHP-3D1B
VELSEN-0024
BAYSENS036A
(TEMP/HUM
COMBO SENSOR)
VELCON-0976
BA/ZPM-SR-ST-D
BAYSENS074A
VELSEN-0049
(THUMBWHEEL)
FOR THUMBWHEEL DO NOT USE
TEMPERATURE SENSOR IN
BAYSENSE036, INSTEAD USE
BAYSENSE074.
FIELD INSTALLED
WATER VALVES
DTC
t°
TEMP. ONLY:
VELSEN-0021
TE-DFG-B1244-00
DISCHARGE AIR TEMPERATURE SENSOR
H
SPHC
SPTC
t°
SPTC
DRHC
H
V+
OUT
GND
SR DPC
VELCON-0976
BA/ZPM-SR-ST-D
V+
OUT
GND
SDPC
VELCON-0608
RHP-3D1B
VTSP
BAYSENS036A
VELSEN-0018
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