Johnson Controls TRUE RH HC-67x3 Installation Instructions Manual

100% RH

Setpoint

10

0

0

5

V Out

Proportional

Band

Note: The actual output
voltage may exceed 10 VDC.

Installation Instructions HC-67x3
Issue Date June 2, 2014

TRUERH™ Series

HC-67x3 Humidity Controllers

Application Requirements

The HC-67x3 Humidity Controllers proportionall y
ramp their output as the humidity changes in the
proportional band. The setpoint is at the low en d 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, ac tion, and
output signal. Proceed to the appropriate cont roller
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 prot ect
against failure or malfunction of the HC-67x3 S eries
Humidity Controllers.

IMPORTANT: Le HC-67x3 Series Humidity
Controllers est destiné à transmettre des données
entrantes à un équipement dans des condition s
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 sup pl ém entaires.
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.

© 2014 Johnson Controls, Inc. 1
Part No. 24-7701-179, Rev. A www.johnsoncontrols.com

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. hex-head cover screw (in the

mounting base)

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

Product Code Number

Description

TE-67D0-602**

Door Replacement Kit without logo

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

BaseCover

1. Loosen (do no t
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

Accessories

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

ACC-DWCLIP-0
ACC-INSL-0*
ACC-INSL-1*
GRD10A-608
T-4000-119
TE-67MB-600
TE-67D0-601**

* 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)
Surface Mounting Pad (10/bag)
Plastic Guard with Baseplate and Mounting Ring
Allen-head Adjustment Tool (30/ba g)
Mounting Base Kit
Door Replacement Kit with Johnson Controls 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 coul d be
exposed to excessive vibration. The following am bi ent
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 wall,
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 ont o 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 remov ed

from the wall unless the cover screw is loosene d 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 bit
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 of f.
(See Figure 5.)

2. Drill a 1-3/8 in. (35 mm) hole in the surf ace
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 t he
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 loosene d as
described in Figure 2.

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

TRUERH Series HC-67x3 Humidity Controllers Instal lation Instructions 3

1-3/8 in.
(35 mm)

Hole

Drywall

Spacer (2) for

3/8 in. (9.5 mm) and 1/2 in.

(12.7 mm ) Thick Drywall

1-3/8 in.

(35 mm)

Hole

Spring
Clip (2)

Drywall

Drywall

Spring

Clip (2)

Base

No. 6-20 x 1.25 in.

Pan-head

Tapping Screw (2)

Housing

Conduit Hole

Snap-on Cover

Conduit Knockout

(Top and Bottom

of Cover)

Duct

Washer (Cup ped Side

Toward Hou s i n g)

Conduit Fitting
(Not Provided)

Nut for Conduit Fitting

(Not Provided)

No. 8

Screw

(2)

Figure 6: Surface Mounting to Drywall

Duct Probe Humidity Controller: Parts Included

• HC-6703-6N00P duct probe humidity controlle r

• No. 8 x 1 in. Phillips-head sheet metal screw (2)

• washer for use with conduit fitting

Note: Conduit fitting and nut are not provided.
Duct Probe Humidity Controller:Special Tools

Needed

• hole saw with 1 in. (25 mm) diameter blade

2. Use the hole saw to make a 1 in. (25.4 mm) hole
in the duct for inserting the probe.

3. Pull the plastic cover off the housing.

• drill with 1/8 in. (3 mm) drill bit

• 1/8 in. (3 mm) flat-blade and No. 2 Phillips

screwdrivers

• pliers

• gasket, sealer, or other material to seal t he area

between the unit and the duct

Duct Probe Mounting Location Considerations

Place the duct probe humidity controller in a locati on
that complies with the following:

• Position: Designed for duct mounting in any
position, except with the probe tip pointed up.

• Duct Diameter: Recommended minimum di am eter
(round ducts) or width (square ducts) is 12 i n.
(305 mm).

• Air Stratification (when the unit is mounted on t he
discharge side of the fan): Recommended location
is at least 8 ft (2.4 m) downstream from the
humidification equipment, where duct ai r and
water vapor are sufficiently mixed. Avoid areas
where the probe may be exposed to condensation.

To mount the duct probe humidity controller, ref er to
Figure 7, and proceed as follows:

1. Remove any excess insulation from the duct that
prevents the probe from extending a minimum of
3 in. (76 mm) into the air stream.

4 TRUERH Series HC-67x3 Humidity Controllers Installation Instructions

4. Insert the probe into the duct, and mark the

5. Remove the unit, and drill a 1/8 in. (3 mm) hole for

6. Use a gasket, sealer, or other means to seal the

7. Reinsert the probe, and secure the housing to the

Figure 7: Mounting and Assembly

location of the holes for the mounting screws.

each mounting screw.

IMPORTANT: Remove the unit before drilling
to prevent any metal remnants from falling ont o the
circuit board. Seal any holes created during
installation to help reduce drafts and for more
accurate humidity readings.

area around the 1 in. (25.4 mm) hole between the
unit and the duct.

duct using the two No. 8 screws provided.

!

Proportional

Band

Potentiometer

Output
Common
Power

20

15

10

5
2

6 to 9 VDC

0 to 10 VDC
(Factory Set)

Output

Reverse
(Factory Set)

Direct

Action

Setpoint

40

60

80

SP

20

Proportional Band

PB

5

2

20

15

10

Power
Ground (Common)
Output

Probe

Setpoint

Adjustment

Lever

Quick-mount

Installation Base

Pull Tab

Access Door

Manual Override

LED Dis play

Wiring

CAUTION: Risk of Electric Shock.

Disconnect the power supply before making
electrical connections to avoid electric shock.

MISE EN GARDE: Risque de décharge électrique.

Débrancher l'alimentation avant de réaliser tout
raccordement électrique afin d'éviter tout risque de
décharge électrique.

Make all wiring connections using No. 18 AWG wire
and in accordance with the National Electrical Code
and all local regulations.

Wall Mount Humidity Controller

To wire the wall mount model, refer to Figure 8, and
proceed with the terminal connections.

Figure 9: Settings on a Duct Probe

Humidity Controller

Figure 8: Wiring and Proportional Band Setting

Duct Probe Humidity Controller

To wire the duct probe model, refer to Figure 9, and
proceed as follows:

IMPORTANT: If using a conduit fitting
(not provided), use the washer provided to support
the fitting in the housing. If the washer is not used,
the fitting could stress the plastic housing.

1. Route the wires from the equipment to the unit
through the conduit hole in the housing shown in
Figure 7.

2. Break out the appropriate knockout from the
cover, shown in Figure 7, using pliers to
accommodate the wiring or conduit.

3. Press the cover onto the base.

Setup and Adjustments

Wall Mount Humidity Controller

Setpoint

Adjust the setpoint using the setpoint adj ust m ent lever
shown in Figure 10. To open the access door, push
down on the pull-tab, and pull the door open.

IMPORTANT: To prevent unauthorized
adjustment of the setpoint, install an optional plastic
guard. (See Table 1 for ordering informat i on.)

Figure 10: Accessing the Setpoint

TRUERH Series HC-67x3 Humidity Controllers Instal lation Instructions 5

Disengage the tabs

to remove the

circuit board.

Reverse
(Factory Set)

Direct

Action

0 to 10 VDC
(Factory Set)

6 to 9 VDC

Output

Circuit Bo ar d

Disengage the tabs

to remove the

circuit board.

Reverse
(Factory Set)

Direct

Action

0 to 10 VDC
(Factory Set)

6 to 9 VDC

Output

Circuit Bo ar d

Jumpers

To set the jumpers, refer to Figure 11. Turn the circuit
board over, and position the action and output j um pers
to suit the application. Reinstall the circuit board.

Figure 11: Jumper Settings

Proportional Band

To set the proportional band, see Figure 8. Use a
1/8 in. (3 mm) flat-blade screwdriver to turn the
potentiometer to the position desired.

Duct Probe Humidity Controller

Setpoint, Proportional Band, and Jumpers

Refer to Figure 9 to change the setpoint, proportional
band, or the action and output jumpers for the
application desired.

1. Use a 1/8 in. (3 mm) flat-blade screwdriver to turn
the setpoint or proportional band potentiometer to
the desired setting.

2. Select the appropriate control action and output
setting using the jumpers.

Troubleshooting

If the humidity controller is not functioni ng properly:

1. Verify the unit is mounted in a location that is
indicative of space humidity (away from drafts and
sunlight, for example).

2. Check all supply voltage connections, and make
sure the wiring is correct. (Refer to Figure 8 and
Figure 9.)

3. Check the proportional band and setpoint settings.
If the humidity control equipment is cycling
excessively, the proportional band setting may be
too low.

4. Verify the jumper positions. If the unit is not
delivering an output, make sure the jumpers are
appropriately selected for the application.

5. Replace the unit if the troubleshooting suggestions
fail to remedy the problem.

Repairs and Replacement

The HC-67x3 units are not field repairable. As with any
electrical device, keep the air vents clean and free
from dust or obstruction. The HC-67x3 controlle rs
have been designed for maintenance-free operat i on.
Sturdy packaging, solid-state components, and
high-quality element construction combine for a
long-lasting, high performance sensor. To order
replacement parts, contact the nearest
Johnson Controls representative.

6 TRUERH Series HC-67x3 Humidity Controllers Installation Instructions

Product

T

RH Series HC-67x3 Humidity Controllers

Power Requirements

Control Action

Jumper selectable, direct or revers e ( factory set for reverse acting)

Output Range

impedance

Proportional Band: Adjustable from 2 to 20% RH

Temperature Coefficient

-0.1 to 0.05% RH/°C at 5°C (41°F) to -0.07 to -0.21% RH/°C at 65°C (149°F)

Electrical Connections

3-position screw terminal block

Conditions

Survival Operating

Ambient Storage

Conditions

-40 to 176°F (-40 to 80°C)
0 to 100% RH, non-condensing; 85°F ( 29°C) m axim um de w point

Materials

Dimensions

Wall Mount (H x W x D): 3.20 x 3.20 x 1 .34 in. (81 x 81 x 34 mm)

Building Efficiency

Technical Specifications

14 to 30 VDC at 10 mA or 20 to 30 VAC, 50/60 Hz at 15 mA with no load, Class 2

Jumper selectable, 0 to 10 VDC (factory set) or 6 to 9 VDC; 5 k ohm minimum load

RUE

Humidity

Element: All-Polymer™ element
Sensing Range: 0 to 100% RH, non-condensing
Setpoint: Adjustable from 20 to 80% RH

Ambient Operating

32 to 122°F (0 to 50°C)
0 to 100% RH, non-condensing; 85°F (29° C) maximum dew point

-22 to 140°F (-30 to 60°C)

Conditions

0 to 100% RH, non-condensing; 85°F (29°C ) maximum dew point

Wall Mount: White plastic enclosure for surf ac e or wallbox mounting, including
hardware
Duct Probe: Light gray plastic cover with dark gray plastic housing and probe

Duct Probe (H x W x D): 3.25 in. x 3.25 in. x 8.27 in. (83 mm x 83 mm x 210 mm)
Probe (L x D): 6.25 in. x 0.98 in. (159 mm x 25 mm)

Shipping Weight

Agency Compliance

The performance specifications are nominal and conform to acceptable industry standards. For application at conditions beyond these
specifications, consult the local Johnson Controls office. Johnson Controls, Inc. shall not be liable for damages resulting from misapplication or
misuse of its products.

0.7 lb (0.3 kg)
Duct Probe Material: 94-5 V flammability rated per UL 94

Metasys® and Johnson Controls® are registered trademarks of Johnson Controls, Inc.

All other marks herein are the marks of t heir respective owners. © 2014 Johnson Controls, Inc.

TRUERH Series HC-67x3 Humidity Controllers Instal lation Instructions 7

507 E. Michigan Street, Milwaukee, WI 53202