Greystone Energy Systems HAHRC Series Installation Instructions

failure of the product could result in personal injury. Take electrostatic discharge precautions during
installation and do not exceed the device ratings.

MOUNTING

The high accuracy room RH 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 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 first. 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.
Figure 3
IN-GE-HAHRCXXX-02

INTRODUCTION

The high accuracy room RH transmitter uses a highly accurate and field-proven
RH sensor in an attractive, low profile 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 flammable
gases, as a safety or emergency stop device or in any other application where
Figure 4
Cover
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High Accuracy Room Relative
Humidity Transmitter
HAHRC Series - Installation Instructions
Figure 1
Figure 2
PCB Backplate
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