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Installation
Table 25. Wireless zone sensor selection for use with Symbio 400-B/UC400-B controller
Sensor
Controls Using 24 Vac
Before installing any wire, refer to the electrical access
locations in the Unit Dimensions and Weights sections of
this manual.
Ensure that the AC control wiring between the controls and
the unit termination point does not exceed 3 Ohms/
conductor for the length of the run.
NOTICE
Component Failure!
Resistance in excess of 3 ohms per conductor could
result in component failure due to insufficient AC
voltage supply.
Do not exceed three (3) ohms per conductor for the
length of the run.
Check all loads and conductors for grounds, shorts, and
mis-wiring. Use copper conductors unless otherwise
specified. Do not run the AC low-voltage wiring in the same
conduit with the high voltage power wiring.
Table 26. 24V AC conductors
Distance from unit to control
000-460 ft
461-732 ft
733-1000 ft
36
Part Number
X13790955010
X13790956010
X13790973030
Recommended wire size
18 gauge
16 gauge
14 gauge
Trane Air-Fi® WCS-SD (display)
•
Symbio 400-B/UC400-B Compatible
•
Easy-to-use interface for clear and simple monitoring and control
Trane Air-Fi WCS-SB (base)
•
Symbio 400-B/UC400-B Compatible
•
Simplicity
•
Eliminates local temperature control when higher control level is required.
Wireless communications sensor accessory—2% relative humidity (RH) sensor
module (WCS-SH)
The optional RH sensor module plugs in to any WCS model, further simplifying
installation by eliminating the needed for additional wiring.
Low-voltage connection diagrams for deluxe 24 V control
packages for these thermostats mounted on 0.75 to 6 ton
equipment sizes are shown in the figures below.
Figure 24. Low voltage wire connection
Description
WSHP-SVX014J-EN
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