Greystone Energy Systems HRC Series Installation Instructions

Mounting

The room RH transmitter installs directly on a standard electrical box and should be
mounted ve feet from the oor of the area to be controlled. Do not mount the sensor
near doors, opening windows, supply air di users or other known air 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 rst. Use a small Phillips screwdriver to loosen the security screw as shown in
Figure 1. (Complete removal of this 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.
The PCB must be removed from the base to access the mounting holes. Follow usual
anti-static procedures when handling the PCB and be careful not to touch the sensors.
The PCB is removed by pressing the enclosure base to unsnap the latch near the bottom
edge, then the PCB can be lifted out of the base as shown in Figure 3.
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 3.
After the base is screwed to an electrical box or the wall using the appropriate holes,
remove the PCB from the anti-static bag, feed connection wires through center hole and
place the top of PCB into the PCB holders on backplate and snap bottom of PCB into
place as shown in Figure 4.
Make wire connections as per the Wiring Illustrations on Page 2 and install decorative
cover by placing the top of the cover into the cover holder on the top of the backplate
and snapping the bottom into place as shown in Figure 4. Tighten security screw with
a Phillips screwdriver.
Figure 3
Greystone Energy Systems, Inc. 150 English Drive, Moncton, NB E1E 4G7 Canada Tel: +1-506-853-3057 Tollfree (North America): +1-800-561-5611 Fax: +1-506-853-6014

Introduction

The room RH transmitter uses a highly accurate and eld-proven RH
sensor in an attractive, low pro le enclosure to monitor room relative
humidity levels. Additional options include an occupancy override
button, a communication jack, a fan speed switch, a slide-pot setpoint
control, a resistive temperature sensor and a LED or LCD display. The RH
output can be selected as a linear 4-20 mA, 0-5 or 0-10 Vdc signal.

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 ammable 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 installa-
tion and do not exceed the device ratings.
Figure 4
Cover
Email: support@greystoneenergy.com Web: www.greystoneenergy.com
HRC Series RH Transmitter

Installation Instructions

Figure 1
Figure 2
PCB Backplate