Johnson Controls HE-67xx Installation Guide

24-9591-5, Rev. B

Installation Instructions HE-67xx
Issue Date March 2016

TRUERH Series

HE-67xx Surface-mount Duct Humidity/Temperature Sensors

nstallation

I

IMPORTANT: The HE-67xx Series Duct

Humidity/Temperature Sensor is
intended to provide an input to
equipment under normal
operating conditions. Where
failure or malfunction of the
humidity/temperature sensor
could lead to personal injury or
property damage to the
controlled equipment or other
property, additional precautions
must be designed into the control
system. Incorporate and maintain
other devices, such as
supervisory or alarm systems or
safety or limit controls, intended
to warn of or protect against
failure or malfunction of the
humidity/temperature sensor.

IMPORTANT : Le HE-67xx Series Duct

Humidity/Temperature Sensor
est destiné à transmettre des
données entrantes à un
équipement dans des conditions
normales de fonctionnement.
Lorsqu'une défaillance ou un
dysfonctionnement du
humidity/temperature sensor
risque de provoquer des
blessures ou d'endommager
l'équipement contrôlé ou un autre
équipement, la conception du
système de contrôle doit intégrer
des dispositifs de protection
supplémentaires. Veiller dans ce
cas à intégrer de façon
permanente d'autres dispositifs,
tels que des systèmes de
supervision ou d'alarme, ou des
dispositifs de sécurité ou de
limitation, ayant une fonction
d'avertissement ou de protection
en cas de défaillance ou de
dysfonctionnement du
humidity/temperature sensor.

© 2016 Johnson Controls, Inc. 1
Part No. 24-9591-5, Rev. B www.johnsoncontrols.com
Code No. LIT-216521

Parts Included

• HE-6700 sensor

Tools Needed

• drill with 1/8 in. drill bit

• 1/4 in. nut driver

ocation Considerations

L

• The sensor must be mounted inside a duct or
economizer rooftop system.

• Orientation: The sensor must be mounted on a
flat surface in a vertical, upright position.

• Placement: Mount the unit at least eight feet
downstream from sources of heat or humidity and
away from areas with no air flow.

• Temperature Requirements: -20 to 140°F
(-29 to 60°C)

IMPORTANT: To avoid damage to the sensor,

do not mount the HE-67xx in a
location that is exposed to rain,
snow, or direct sunlight, or in a
location where high
concentrations of corrosive
vapors are present.

No. 6

Sheet Metal

Screws (2)

Duct

!

Sensor Terminal

Signal Designation

20 to 30 VAC at 50/60 Hz

Product Code

Description

M

ounting

To mount the HE-67xx:

1. Using the sensor as a template, mark the location
of the two screws.

2. Use a drill with a 1/8 in. bit to drill two holes in the
duct.

3. Attach the sensor to the duct using a 1/4 in. nut
driver and two No. 6 sheet metal screws
(not provided) as shown in Figure 1.

Note: Mount the sensor in an upright position.

Figure 1: HE-6700 Mounting

iring

W

IMPORTANT: All wiring connections must be

made in accordance with the
National Electrical Code and all
local regulations.

To wire the HE-67xx:

1. Route the wires from the controller to the HE-67xx.
We recommend you use No. 18 AWG wire.

2. Connect the wires to the appropriate terminals of
the wiring block. (See Table 1, and refer to the
appropriate controller documentation.)

Table 1: HE-6700 Terminal Designations

T
T
OUT
COM
PWR

Temperature
Temperature
Relative Humidity Output
Common
Power: 14 to 30 VDC or

WARNING: Risk of Electric Shock.

Disconnect the power supply
before making electrical
connections. Contact with
components carrying hazardous
voltage can cause electric shock
and may result in severe
personal injury or death.

AVERTISSEMENT : Risque de décharge

électrique. Débrancher

l'alimentation avant de réaliser
tout branchement électrique.
Tout contact avec des
composants conducteurs de
tensions dangereuses risque
d'entraîner une décharge
électrique et de provoquer des
blessures graves, voire
mortelles.

heckout

C

After installation and wiring are complete, apply power
and make an operational check as shown in the
appropriate controller documentation.

Refer to Table 2 for accessories available, and contact
the nearest Johnson Controls representative.

Table 2: Accessories

Number

ACC-BRKT-100

ACC-CBL-100

For specifications on the product, refer to Table 3.

Mounting Bracket for mounting the
sensor perpendicular to the duct;

3.25 H x 3.62 W x 0.75 in. D
(83 x 92 x 19 mm)

Wiring Harness, 53 in. (1.3 m)

2 TRUERH Series HE-67xx Surface-mount Duct Humidity/Temperature Sensors Installation Instructions