Mounting
The room type sensor is installed directly on a standard electrical box, or mounted directly to the wall. The backplate is configured for
compatibility with many types of electrical boxes. It should be mounted approximately five feet from the floor of the area to be
controlled. Do not mount the sensor near doors, windows that open, supply air- diffusers or other known air disturbances. Avoid areas
where the sensor is exposed to vibrations or rapid temperature changes.
The cover is hooked to the base at the top edge, and must be removed from the bottom edge first. Use a small screwdriver to carefully
pry each bottom corner, if necessary. If a security screw is installed on the bottom edge, then it will need to be loosened or removed.
Tip the cover away from the base and set it aside.
The pcb must be removed from the base to access the mounting holes. Follow typical anti-static procedures when handling the pcb
and be careful not to touch or bend the sensors. To remove the pcb, press the tab on the enclosure base to unsnap the latch near the
bottom edge, then lift the pcb out of the base. Set the pcb aside until the base is mounted on the wall.
After the base is screwed to an electrical box or the wall, using the appropriate holes, pull the wires through the wiring hole in the
center of the pcb and then gently reinstall it in the enclosure base. Ensure the pcb is snapped into the base securely and correctly.
The mounting hole locations are shown in the dimensions drawing.
Figure 2: HS-RT Sensors Mounting
Wiring
Deactivate the 24 Vac/dc power supply until all connections are made to the device to prevent electrical shock or equipment damage.
Follow proper electrostatic discharge (ESD) handling procedures when installing the device, otherwise equipment damage may occur.
Use 22 AWG shielded wiring for all connections, and do not locate the device wires in the same conduit with wiring used to supply
inductive loads, such as motors. Connect the cable shield to ground at the controller, only. Make all connections in accordance with
national and local codes.
For 4-20 mA two-wire loop-powered operation, only the POWER and OUTPUT terminals are required if a DC power supply is used.
The COMMON terminal is only used for AC power or for a voltage output signal type. If the signal type is set to voltage, or a 24-volt
AC power supply is used, connect the positive dc voltage or the hot side of the ac voltage to the terminal marked POWER, and connect
the power supply common to the terminal marked COMMON. The device is reverse voltage protected and will not operate if connected
backwards.
For three-wire voltage output operation, connect either an AC or DC power supply to POWER and COMMON, and the voltage output
signal is available on the OUTPUT terminal with respect to COMMON.
Ensure the controller Analog Input (AI) matches the sensor output signal type before power is applied, and that the pcb switches are
set
correctly for the required signal type. The current signal has a maximum load that it can drive, and the voltage signal has a minimum
load rating. Follow the ratings in the Specification section or inaccurate readings may result.
This device has a half-wave power supply so the power supply common is the same as the signal common. Several devices may be
connected to one power supply and the output signals all share the same common. Use caution when grounding the secondary of a
transformer or when wiring multiple devices to ensure the ground point is the same on all devices and the controller.
The override switch output is a dry-contact and is available on the SWITCH + and SWITCH – terminals and typically connects to a
low voltage digital input of the controller to indicate room occupancy or override when the button is activated. The five-position fan
