14 Wireless Sensors • BAS-SVX04C-EN
Installation
Wiring the Receiver to the Unit Controller
Power requirements and wiring instructions for the receiver are described in this section.
Power Requirements
The required power for the receiver is 24 Vac or 24 Vdc and less than 1 VA. The receiver
is designed to be powered by the host unit controller. A dedicated transformer to power
the receiver is seldom necessary and is not recommended. It should be used only when
the host transformer does not have enough volt-ampere (VA) capacity to power the
receiver (see “Specifications,” p. 47 for receiver power consumption).
Wiring diagrams for single transformer wiring and multiple transformer wiring are
located in “Appendix A: Wiring Diagrams,” p. 48.
Wiring Procedure
WARNING
Hazardous voltage!
Disconnect all electric power, including remote disconnects before servicing. Follow
proper lockout/tagout procedures to ensure the power cannot be inadvertently
energized. Failure to disconnect power before servicing could result in death or serious
injury.
NOTICE
Equipment damage!
Applying excessive voltage to the receiver module will permanently damage it.
To wire the receiver to the unit controller:
1. Shut off power to the unit controller to which you are wiring the receiver.
2. Connect the wiring harness (provided) to the receiver (Figure 2, p. 15).
3. Route the wires from the receiver to the unit controller through either:
a. The opening at the back of the back plate (see Figure 3, p. 16 for an example).
b. The hole in the bottom of the cover (see Figure 4, p. 16 for an example).
4. Terminate wires at the unit controller. Refer to Table 1, p. 15 and Figure 2, p. 15 to
determine which wires to use and where to terminate them on the controller.
Notes:
• To maintain agency compliance, ensure that length of the wiring harness is no more
than 3 m.
• Adaptors are provided, which allow connecting multiple wires to the power
terminals of the host unit controller (see Figure 3 and Figure 4, p. 16.
• An anti-short bushing is provided; use it to prevent the wire from shorting out if the
steel penetrates the wiring harness (see Figure 4, p. 16).
5. Trim off any unused terminals. Insulate exposed wire with tape or a wire nut.
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