Johnson Controls TrueRH Series Guida

24-9527-7, Rev. C

Installation Instructions HE-67xx

Issue Date March 2016

Part No. 24-9527-7, Rev. C www.johnsoncontrols.com

TRUERH™ Series

HE-67xx Humidity Element with Temperature Sensor

Installation

IMPORTANT: Use this HE-67xx Humidity

Element with Temperature Sensor only as an

operating control. Where failure or malfunction of the

humidity element with 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 element with

temperature sensor.

IMPORTANT : Utiliser ce HE-67xx Humidity

Element with Temperature Sensor uniquement en

tant que dispositif de contrôle de fonctionnement.

Lorsqu'une défaillance ou un dysfonctionnement du

humidity element with 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 element with

temperature sensor.

The humidity elements are 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 parts included and

tools required for installation.

Location Requirements

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.

Wall Mount Humidity Element

Locate the humidity element on an inside wall, free

from drafts, out of direct sunlight, and where the

element is not exposed to excessive vibration. Be

careful not to drop the unit.

Mount the wall mount element at a height of 4 to 6 ft

(1.2 to 1.8 m) above the floor and with one of the

two mounting direction arrows on the circuit board

pointing up. (See Figure 1.) Improper orientation can

result in heat-induced error.

Mounting Direction

Arrows

0 to 10

VDC

0 to 5

VDC UP

Output

Figure 1: Mounting Direction Arrows

and Output Jumper Location

Duct Probe Humidity Element

Place the duct probe humidity element in a location

that complies with the following:

•Position: Designed for duct mounting in any

position, except with the probe tip pointed up.

•Duct Diameter: Recommended minimum

diameter (round ducts) or width (square ducts) is

12 in. (305 mm).

•Air Stratification (when the unit is mounted on the

discharge side of the fan): Recommended location

is at least 8 ft (2.4 m) downstream from

humidification equipment, where duct air and

water vapor are sufficiently mixed. Avoid areas

where the probe may be exposed to condensation.

2TRUERH Series HE-67xx Humidity Element with Temperature Sensor Installation Instructions

Application Setup

The element must be configured for the output signal

required prior to installation. Proceed to the

appropriate element section to change the factory

setting.

Wall Mount Humidity Element

To set the output jumper, refer to Figure 1. Remove

the cover, and position the output jumper to suit the

application. Reinstall the cover.

Duct Probe Humidity Element

Refer to Figure 2 to set the output jumper for the

application.

0 to 5 VDC

0 to 10 VDC

(Factory Set)

Output

Probe

Figure 2: Output Jumper Selection

Mounting

Wall Mount Humidity Element

Parts included are:

•wall mount humidity element

•No. 8 x 1-1/4 in. pan-head tapping screw (2)

•plastic drywall anchor (2)

•horizontal and vertical faceplates

Tools required are:

•1/16 in. (1.5 mm) Allen wrench or

T-4000-119 Allen-head adjustment tool

•1/4 in. (7 mm) and 1/8 in. (3 mm) flat-blade

screwdrivers

•drill with 5/16 in. (8 mm) and 1/2 in. (13 mm)

drill bits

Surface

To mount the unit to drywall, refer to Figure 3 and

proceed as follows:

Base

Circuit Board

Cover

Horizontal

Faceplate

No. 8

Screw (2)

Vertical

Faceplate

Button-head

Screw (2)

Drywall

Base

Anchor (2)

Figure 3: Mounting to Drywall

1. Loosen the button-head screw on both sides of the

plastic cover.

2. Pull the cover off the base.

3. Use the base as a template, and mark the holes

for the two anchors and the wiring.

4. Drill a 5/16 in. (8 mm) hole for the each anchor.

5. Drill a 1/2 in. (13 mm) hole in the surface where

the unit will be mounted, and pull the wiring

through the drilled hole.

6. Feed the wiring through the 1/2 in. (13 mm) hole

and the circuit board.

7. Mount the base to the wall using the anchors and

the No. 8 screws.

TRUERH Series HE-67xx Humidity Element with Temperature Sensor Installation Instructions 3

Wallbox

To mount the unit to a wallbox, refer to Figure 4 and

proceed as follows: Note: The TE-1800-9600 Wall Plate Adaptor Kit is

required for this mounting method and must

be ordered separately. (See Figure 4 and

Table 1.)

* Items in TE-1800-9600 Wall Plate Adaptor Kit

Base

Mounting

Bracket*

Wall Plate Adapter*

Humidity Transmitter’s

Circuit Board

Cover

Horizontal Faceplate

Vertical Faceplate

Wallbox

No. 6-32 x 7/8 in. Pan-head

Machine Screw (2)*

No. 6-32 x 5/8 in. Pan-head

Machine Screw (2)*

Figure 4: Mounting to a Wallbox

1. Attach the mounting bracket from the wall plate

adaptor kit (TE-1800-9600) to the wallbox, using

the two No. 6-32 x 7/8 in. pan-head screws

included.

2. Feed the wiring through the mounting bracket, the

wall plate adapter, the base, and the hole in the

circuit board.

3. Use the No. 6-32 x 5/8 in. pan-head screws to

secure the base of the humidity element to the

wall plate adaptor and the mounting bracket.

Duct Probe Humidity Element

Parts included are:

•duct probe humidity element

•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.

Tools required are:

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

•drill with 1/8 in. (3 mm) drill bit

•No. 2 Phillips screwdriver

•pliers

•gasket, sealer, or other material to seal the area

between the unit and the duct

4TRUERH Series HE-67xx Humidity Element with Temperature Sensor Installation Instructions

To mount the duct probe humidity element, refer to

Figure 5 and proceed as follows:

Housing

Conduit Hole

Snap-on Cover

Conduit Knockout

(Top and Bottom

of Cover)

Duct

Washer (Cupped Side

Toward Housing)

Conduit Fitting

(Not Provided)

Nut for Conduit Fitting

(Not Provided)

No. 8

Screw

(2)

Figure 5: Duct Probe Humidity Element

Assembly and Mounting

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.

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.

4. Insert the probe into the duct, and use the housing

as a template to mark the location of the holes for

the mounting screws.

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

each mounting screw.

IMPORTANT: Remove the unit before drilling

to prevent any metal remnants from falling onto the

circuit board.

Seal any holes created during installation to help

reduce drafts and for more accurate humidity

readings.

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

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

unit and the duct.

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

duct using the two No. 8 screws provided.

Wiring

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.

Observe the following when wiring either type of

element:

•Do not run low voltage wiring in the same conduit

as line voltage wiring or other conductors that

supply highly inductive loads.

•Use 18 or 24 AWG wire.

•Make all wiring connections in accordance with the

National Electrical Code and all local regulations.

Wall Mount Humidity Element

To wire a wall mount model:

1. Connect the wires to the appropriate positions on

the terminal block. (See Figure 6.)

Terminal Block TB1

(Humidity Transmitter

Connection)

Terminal Block TB2

(Temperature Sensor

Connection)

Wiring

Opening

Sensor

PWR

COM

OUT

Terminal

Wiring

Figure 6: Wiring the Wall Mount Humidity Element

2. Place the cover over the base, and tighten the

button-head screw (shown in Figure 3) on either

side of the unit to secure.

3. Choose the appropriate faceplate (vertical or

horizontal), depending on the mounting position of

the unit.

4. Remove the adhesive-backed paper from the

faceplate, and apply to the cover.

TRUERH Series HE-67xx Humidity Element with Temperature Sensor Installation Instructions 5

Duct Probe Humidity Element

To wire a duct probe model:

1. Route the wires from the controller to the unit

through the conduit hole in the housing.

IMPORTANT: If using a conduit fitting (not

provided), a washer is provided to support the fitting

in the housing. If the washer is not used, the fitting

could stress the plastic housing.

2. Break out the appropriate knockout from the cover

(shown in Figure 5) with pliers to accommodate

the wiring or conduit if used.

3. Connect the wires to the appropriate terminals of

the wiring block. (See Figure 7.)

Label

Output

Selection

0-5V

0-10V

PWR

COM

OUT

TEMP

Terminal

Designation

Input 18-30 VAC, 12-30 VDC

Ouput 0-5 or 0-10 VDC

DATE

PART NUMBER

Probe

Figure 7: Wiring the Duct Probe Humidity Element

4. Press the cover onto the base.

Troubleshooting

If the humidity element is not functioning properly:

1. Verify the unit is mounted in a location that is

indicative of space humidity and temperature

(away from drafts, moisture, sunlight, etc.).

2. Use a humidity tester with accuracy greater than

the element (±2% between 20 and 80% for

2% models; ±3% between 20 and 80% for

3% models), such as an optical dew point

hygrometer, to determine the percent of Relative

Humidity (RH).

Note: The humidity tester and the element must

sense the air at the same temperature. Before

testing, be sure to wait 30 to 60 minutes for

the tester to stabilize to ambient temperature

and humidity. A temperature difference of as

little as 1F° (0.6C°) can cause a difference in

measured RH of over 2.5% RH.

3. Calculate the percent of RH indicated by the

element as follows:

For 0 to 10 VDC output, multiply the output voltage

by 10. For example: 7.5 VDC x 10 = 75% RH

For 0 to 5 VDC output, multiply the output voltage

by 20. For example: 3.5 VDC x 20 = 70% RH

Note: ±0.9F° (±0.5C°) corresponds to an error of

about ±2% RH at 25°C if RH is at a high level,

e.g., 70%.

4. Compare the RH readings between the humidity

tester and the element. If the difference is more

than the sum of the allowable errors, replace the

element.

Ordering Information

Refer to Table 1 for accessories for the wall mount

humidity elements (none for the duct probe models),

and contact the nearest Johnson Controls

representative.

See Table 2 for product specifications for the humidity

elements.

Table 1: Accessories for the Wall Mount Humidity Elements

Product Code Number Description

GRD10A-608

Plastic Guard with Baseplate and Mounting Ring

T-4000-119 Allen-head Adjustment Tool (30/bag)

TE-1800-9600 Wall Plate Adaptor Kit required for wallbox mounting

6TRUERH Series HE-67xx Humidity Element with Temperature Sensor Installation Instructions

Technical Data

Product

RUERHSeries HE-67xx Humidity Element with Temperature Sensor

Power Requirements 14 to 30 VDC or 20 to 30 VAC at 50/60 Hz, Class 2

Current Draw

3 mA with no load, 25 mA maximum

Acceptable Wire Gauge 16 to 24 AWG wire (18 AWG wire recommended)

Humidity Element

at 77

F (25

C) Signal: 0 to 5 VDC or 0 to 10 VDC, 1,000 ohm maximum load

Accuracy: HE-67x2: ±2% RH for 20 to 80% RH at 77°F (25°C)

±4% RH for 10 to 20% and 80 to 90% RH at 77°F (25°C)

HE-67x3: ±3% RH for 20 to 80% RH at 77°F (25°C)

±5% RH for 10 to 20% and 80 to 90% RH at 77°F (25°C)

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)

Temperature Sensors Thin-film Nickel: Accuracy: ±0.34°F (0.18°C) at 70°F (21°C)

Reference Resistance: 1,000 ohms at 70°F (21°C)

Resistance Change: Approximately 3 ohms/°F (5 ohms/°C)

Silicon: Accuracy: ±1°F (0.6°C) at 70°F (21°C)

Reference Resistance: 1,035 ohms at 77°F (25°C)

Resistance Change: Approximately 4 ohms/°F (8 ohms/°C)

Thin-film Platinum: Accuracy: ±0.65°F at 70°F (±0.36°C at 21°C)

Reference Resistance: 1,000 ohms at 32°F (0°C)

Resistance Change: Approximately 2 ohms/°F (4 ohms/°C)

Electrical Connections

3-position and 2-position screw terminal blocks

Ambient Operating

Conditions

32 to 140°F (0 to 60°C)

0 to 100% RH, 85°F (29.4°C) maximum dew point

Survival Operating

Conditions -20 to 140°F (-29 to 60°C)

0 to 100% RH, 85°F (29.4°C) maximum dew point

Ambient Storage

Conditions

-40 to 140°F (-40 to 60°C)

0 to 100% RH, 85°F (29.4°C) maximum dew point

Materials Wall Mount: Beige plastic cover with metal base and metal foil face plates

Duct Probe: White plastic cover with dark gray plastic housing and probe

Dimensions Wall Mount (H x W x D): 1.81 x 2.12 x 3.12 in. (46 x 54 x 79 mm)

Duct Probe (H x W x D): 3.28 x 3.25 x 8.27 in. (83 x 83 x 210 mm)

Probe (L x D): 6.25 x 0.98 in. (159 x 25 mm)

Shipping Weight

0.6 lb (0.3 kg)

Agency Compliance

Duct Probe Material: 94-5V flammability rated per UL 94

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.

European Single Point of Contact:

NA/SA Single Point of Contact:

APAC Single Point of Contact:

JOHNSON CONTROLS

WESTENDHOF 3

45143 ESSEN

GERMANY

JOHNSON CONTROLS

507 E MICHIGAN ST

MILWAUKEE WI 53202

USA

JOHNSON CONTROLS

C/O CONTROLS PRODUCT MANAGEMENT

NO. 22 BLOCK D NEW DISTRICT

WUXI JIANGSU PROVINCE 214142

CHINA

TRUERH Series HE-67xx Humidity Element with Temperature Sensor Installation Instructions 7

Building Efficiency

507 E. Michigan Street, Milwaukee, WI 53202

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

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