Greystone CDD3 Series Installation Instructions Manual

BEFORE INSTALLATION
Read these instructions carefully before installing and commissioning the device. Failure to follow these
instructions may result in product damage. Do not use in an explosive or hazardous environment, with
combustible or flammable gases, as a safety or emergency stop device or in any other application where
failure of the product could result in personal injury. Take electrostatic discharge precautions during
installation. Do not exceed device ratings.
NOTE: This CO2 sensor incorporates a Self Calibration feature to correct CO2 sensor drift. This feature is
recommended for applications where the CO2 will be exposed to fresh air (400 ppm) at least one hour
per day. If the monitored space is occupied 24 hours or consistently maintains higher or lower levels of
CO2 , it is recommended that this feature be turned off, but yearly calibration will be required. If the self
calibration is disabled at installation time without allowing for 7 day auto calibration cycle, then a manual
calibration should be performed to ensure accuracy of the device. The Self Calibration feature can be set via
the BACnet® Auto Cal Object. The default is ON.
MOUNTING
The transmitter installs directly on a standard electrical box and should
be mounted five feet from the floor of the area to be controlled. Do not
mount the sensor near doors, opening windows, supply air diffusers or
other known disturbances. Avoid areas where the detector 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 Phillips screwdriver to loosen
the security screw as shown in Figure 1. Complete removal of the
screw is not required. Use the screwdriver to carefully pry each bottom
corner if necessary. Tip the cover away from the base and sit it aside as
shown in Figure 2.
Sit the PCB aside until the base is mounted on the wall. For added
protection, place the PCB in the supplied anti-static bag.
Mount the base by screwing to an electrical box or directly to the wall
as shown in Figure 4. The mounting hole locations are shown on page 4.
Figure 3
IN-GE-CDD3A1XXXBAC-004
INTRODUCTION
The carbon dioxide transmitter uses Infrared Technology to monitor
CO levels within a range of 0 - 10,000 ppm. Options include a
2
control relay, override switch, up/down set-point control, relative
humidity sensor and temperature sensor.
The device includes native BACnet® protocol with 15 BACnet®
objects and an RS-485 MS/TP network connection to offer a single-
point solution for control of indoor air quality and comfort. Features
include a back-lit LCD and user menu for easy installation, field-
proven RH sensor and user input controls to add local set-point
and override functions at the same network point.
Figure 4
Cover
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Room Carbon Dioxide
Transmitter with BACnet®
CDD3A1 Series - Installation Instructions
Figure 1
Figure 2
PCB Backplate
Page 1