Johnson Controls HC-67x3 Installation Guide

24-7701-179, Rev. B

100% RHSetpoint

10

0

0

5

V Out

Proportional

Band

Note: The actual output
voltage may exceed 10 VDC.

Installation Instructions HC-67x3
Issue Date March 2016

TRUERH™ Series

HC-67x3 Humidity Controllers

Application Requirements

The HC-67x3 Humidity Controllers proportionally
ramp their output as the humidity changes in the
proportional band. The setpoint is at the low end of
the proportional band for Direct Acting (DA) and at
the high end for Reverse Acting (RA) (shown in
Figure 1) for both wall mount and duct probe
humidity controllers.

Figure 1: 0 to 10 Volt, RA Application

Configure the controller prior to installation for the
following: setpoint, proportional band, action, and
output signal. Proceed to the appropriate controller
section.

Installation

IMPORTANT: The HC-67x3 Series Humidity

Controllers is intended to provide an input to
equipment under normal operating conditions. Where
failure or malfunction of the HC-67x3 Series Humidity
Controllers 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 HC-67x3 Ser i es
Humidity Controllers.

IMPORTANT: Le HC-67x3 Series Humidity
Controllers est destiné à transmettre des données
entrantes à un équipement dans des conditions
normales de fonctionnement. Lorsqu'une défaillance
ou un dysfonctionnement du HC-67x3 Series Humidity
Controllers 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 HC-67x3 Series Humidity
Controllers.

The controller is available in both a wall mount or duct
probe package to suit a variety of sensing application
needs. Refer to the Mounting section for a complete list
of the tools required for installation.

Parts Included

• mounting base for U.S. wallbox or surface mounting

• No. 6-32 x 7/8 in. oval-head screw (2)

• No. 4-40 x 1/4 in. he x-head cover screw (in the

mounting base)

© 2016 Johnson Controls, Inc. 1
Part No. 24-7701-179, Rev. B www.johnsoncontrols.com

• drywall clip mounting kit (includes two each
No. 6-20 x 1.25 in. pan-head tapping screws, spring
clips, and spacers)

Accessories

Product Code Number

Description

ACC-INSL-1*

Surface Mounting Pad (10/bag)

TE-67MB-600

Mounting Base Kit

** Contains 10 original style and 10 new style doors.

BaseCover

1. Loosen (do not
remove) the cover
screw with a 1/16 in.
(1.5 mm) Allen
wrench.

2. Swing the cover
down from the
base.

No. 6

Screws

Cover
Screw

Table 1: Accessories and Replacement Parts for the Wall Mount Humidity Controller

ACC-DWCLIP-0
ACC-INSL-0*

GRD10A-608
T-4000-119

TE-67D0-601**
TE-67D0-602**

* These foam pads help prevent drafts from entering the unit through the wall and make installation easier when mounting
on an uneven surface.

Drywall Clip Mounting Kit (10/bag)
Wallbox Mounting Pad (10/bag)

Plastic Guard with Baseplate and Mounting Ring
Allen-head Adjustment Tool (30/bag)

Door Replacement Kit with Johnson Controls logo
Door Replacement Kit without logo

Mounting

Location Considerations

IMPORTANT: To avoid damage to the

circuit board and components, do not mount the
unit in a location where high concentrations of
corrosive vapors are present.

The HC-67x3 controller is shipped with one
mounting base for both surface and wallbox
mounting. To mount the HC-67x3, release the cover
from the base as described in Figure 2.

be careful not to drop or mount the unit where it could be
exposed to excessive vibration. The following ambient
operating conditions apply:

• Temperature: 32 to 122°F (0 to 50°C)

• Humidity: 0 to 100% Relative Humidity (RH),

non-condensing; 85°F (29°C) maximum dew point

To mount the HC-67x3 to a wallbox:

1. Pull the cable or wiring through the wallbox and
base.

2. Rotate the mounting base, so one of the arrows on
the base points up.

Figure 2: Removing the Cover from the Base

Wallbox Mounting: Special Tools Needed

Use a 1/16 in. (1.5 mm) Allen wrench or
T-4000-119 Allen-head adjustment tool for
mounting.

Wallbox Mounting: Location Considerations

Locate the humidity transmitter on an inside wal l,
free from drafts, and out of direct sunlight. The
HC-67x3 is shock and vibration resistant; however,

2 TRUERH Series HC-67x3 Humidity Controllers Installation Instructions

3. Fasten the base to the wallbox with the
No. 6 screws provided. (See Figure 3.)

Note: These instructions assume a standard
2 x 4 in. (52 x 104 mm) U.S. wallbox is used.

Figure 3: Wallbox Mounting

4. Place the bottom edge of the cover against the
bottom lip of the base, and rotate it up onto the
base. (See Figure 4.)

5. Tighten the cover screw.

Base

Cover
Screw

Cover

Base

Cover
Screw

Cover

Figure 4: Attaching the Cover to the Base

Note: Once installed, the unit cannot be removed

from the wall unless the cover screw is loosened as
described in Figure 2.

IMPORTANT: Seal the drilled hole or use an
ACC-INSL-0 Foam Pad Kit to help reduce drafts
entering the unit. (See Table 1.) Drafts could result
in false readings.

needed as shown in Figure 6. Do not use the
spacers for 5/8 in. (16 mm) drywall.

Note: For replacement spring clips, spacers, and
screws, order the ACC-DWCLIP-0 Drywall Clip Mounting
Kit. (See Table 1.)

Surface Mounting: Special Tools Needed

• hole saw with 1-3/8 in. (35 mm) diameter blade

• 1/16 in. (1.5 mm) Allen wrench or

T-4000-119 Allen-head adjustment tool

• drill with 1/8 in. (3 mm ) drill b it
To mount the surface model to drywall, refer to

Figure 6 and proceed as follows:

1. Bend the top and bottom edges of mounting
base at the perforations until they break off.
(See Figure 5.)

2. Drill a 1-3/8 in. (35 mm) hole in the surface
where the unit is to be mounted, and pull the
wiring through the drilled hole.

3. Mark the location of the two mounting screws,
and drill the holes.

4. Insert the spring clips on each side of the drilled
1-3/8 in. (35 mm) hole, and use the spacers if

Figure 5: Removing the Breakaway Tabs

5. Pull the wiring through the base of the unit.

6. Center the two holes in the base over the two drilled
holes, and fasten the base to the drywall using the
No. 6 screws provided. (See Figure 6.)

7. Place the bottom edge of the cover against the
bottom lip of the base, and rotate it up onto the base
as shown in Figure 4.

8. Tighten the cover screw.

9. Once installed, the HE-67xx cannot be removed
from the wall unless the cover screw is loosened as
described in Figure 2.

IMPORTANT: To prevent drywall damage, do
not overtighten the screws.

TRUERH Series HC-67x3 Humidity Controllers Installation Instructions 3