Johnson Controls TrueRH Series Bedienungsanleitung

24-7701-187, Rev. B

Installation Instructions HT-670x

Issue Date March 2016

Part No. 24-7701-187, Rev. B www.johnsoncontrols.com

TRUERH™ Series HT-670x Humidity Transmitters

Application Requirements

Configure the transmitter for the output signal required

prior to installation. Proceed to the appropriate

transmitter section to change the factory setting.

Installation

The humidity transmitter is available in both a wall

mount or duct probe package to suit a variety of

sensing application needs.

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)

IMPORTANT: The HT-670x Series Humidity

Transmitter is intended to provide an input to

equipment under normal operating conditions.

Where failure or malfunction of the HT-670x Series

Humidity Transmitter 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

HT-670x Series Humidity Transmitter

IMPORTANT: Le HT-670x Series Humidity

Transmitter est destiné à transmettre des données

entrantes à un équipement dans des conditions

normales de fonctionnement. Lorsqu'une défaillance

ou un dysfonctionnement du HT-670x Series

Humidity Transmitter 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

HT-670x Series Humidity Transmitter.

Accessories

Table 1: Accessories and Replacement Parts for Wall Mount Humidity Transmitters

Product Code Number

Description

ACC-DWCLIP-0

Drywall Clip Mounting Kit (10/bag)

ACC-INSL-0*

Wallbox Mounting Pad (10/bag)

ACC-INSL-1* Surface Mounting Pad (10/bag)

GRD10A-608

Plastic Guard with Baseplate and Mounting Ring

T-4000-119

Allen-head Adjustment Tool (30/bag)

TE-67MB-600 Mounting Base Kit

TE-67D0-601**

Door Replacement Kit with Johnson Controls logo

TE-67D0-602** Door Replacement Kit without logo

* These foam pads help prevent drafts from entering the unit through the wall and make installation easier when mounting

on an uneven surface.

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

2TRUERH Series HT-670x Humidity Transmitters Installation Instructions

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 HT-670x element comes with one mounting base

for both surface and wallbox mounting. To mount the

HT-670x, release the cover from the mounting base as

described in Figure 1.

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.

Figure 1: 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 HT-670x is

shock and vibration resistant; however, 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),

noncondensing; 85°F (29°C) maximum dew point

To mount the HT-670x 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.

3. Fasten the base to the wallbox with the

No. 6 screws provided. (See Figure 2.)

Note: These instructions assume a standard

2 x 4 in. (52 x 104 mm) U.S. wallbox is used.

No. 6

Screws

Cover

Screw

Figure 2: Wallbox MountingPlace the bottom edge of

the cover against the bottom lip of the base, and

rotate it up onto the base. (See Figure 3.)

5. Tighten the cover screw.

Base

Cover

Screw

Cover

Figure 3: Attaching the Cover to the Base

Once installed, the HT-670x cannot be removed from

the wall unless the cover screw is loosened as

described in Figure 1.

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 humidity or temperature readings.

TRUERH Series HT-670x Humidity Transmitters Installation Instructions 3

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 5 and proceed as follows:

1. Bend the top and bottom edges of mounting base

at the perforations until they break off.

(See Figure 4.)

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

needed as shown in Figure 5. 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.)

Base

Cover

Screw

Cover

Figure 4: Removing the Breakaway Tabs

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

7. 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 5.)

8. 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 3.

9. Tighten the cover screw.

Once installed, the HT-670x cannot be removed from

the wall unless the cover screw is loosened as

described in Figure 1.

IMPORTANT: To prevent drywall damage, do

not overtighten the screws.

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

Spring

Clip (2)

Base

No. 6-20 x 1.25 in.

Pan-head

Tapping Screw (2)

Figure 5: Surface Mounting to Drywall

4TRUERH Series HT-670x Humidity Transmitters Installation Instructions

Duct Probe Humidity Transmitter Parts Included

•HT-670x Series transmitter

•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 Transmitter Special Tools

Needed

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

•drill with 1/8 in. (3 mm) drill bit

Duct Probe Humidity Transmitter Location

Considerations

Place the duct probe humidity transmitter 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.

To mount the duct probe humidity transmitter, refer to

Figure 6, 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.

2. Use the hole saw to make a 1 in. (25.4 mm) hole

in the duct to insert the probe.

3. Pull the plastic cover off the housing.

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 6: Mounting and Assembly

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

TRUERH Series HT-670x Humidity Transmitters Installation Instructions 5

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.

When wiring the HT-670x, consider the following:

•Do not run low-voltage wiring in the same conduit

as line-voltage wiring or other conductors that

supply highly inductive loads.

•Make all wiring connections in accordance with the

National Electrical Code and all local regulations.

Wall Mount Humidity Transmitter

Depending on the application, refer to Figure 7 or

Figure 8 to wire the wall mount model.

1. Proceed with the terminal connections.

Output Power

Common

Measuring Device:

R = 5k ohm

(Minimum)

Power Supply:

20 to 30 VAC

14 to 30 VDC

Figure 7: Wiring with Output Jumper

Set for 0 to 10 VDC

Power

Measuring Device:

R 50 x (Supply

Voltage - 15.5)

Power Supply:

16 to 30 VDC

≤

Note: Output is

not used.

Common

Figure 8: Wiring with Output Jumper

Set for 4 to 20 mA Once installed, the unit cannot be

removed from the wall unless the cover screw is

loosened as described in Figure 1.

Duct Probe Humidity Transmitter

Depending on the application, refer to Figure 10 or

Figure 11 to wire the duct probe model.

1. Route the wires from the equipment to the unit

through the conduit hole in the housing.

(See Figure 6.)

2. Break out the appropriate knockout from the

cover, shown in Figure 6, using pliers to

accommodate the wiring or conduit.

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.

3. Press the cover onto the base.

Setup and Adjustments

Wall Mount Humidity Transmitter

To set the output jumper, refer to Figure 9. Remove

the circuit board, and position the output jumper to suit

the application. Reinstall the circuit board.

Circuit Board

0 to 10 VDC

(Factory Set)

4 to 20 mA

Output

Disengage the tabs

to remove the

circuit board.

Figure 9: Setting the Output Jumper

Duct Probe Humidity Transmitter

Refer to Figure 10 to set the output jumper for

0 to 10 VDC.

6TRUERH Series HT-670x Humidity Transmitters Installation Instructions

Probe

Output

Power

Ground

(Common)

Measuring

Device:

R = 5,000 ohms

(Minimum)

Power Supply:

20 to 30 VAC

14 to 30 VDC

0 to 10 VDC

(Factory Set)

Output

Figure 10: Output Jumper Set for 0 to 10 VDC

Refer to Figure 3 to set the output jumper for

4 to 20 mA.

Probe

Power

Ground

(Common)

Power Supply:

16 to 30 VDC

Measuring

Device:

R 50 x (Supply

Voltage - 15.5)

Output

4 to 20 mA

Note: Output is

not used.

Figure 11: Output Jumper Setting for 4 to 20 mA

Troubleshooting

If the humidity transmitter is not functioning properly:

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

indicative of space humidity (away from drafts or

sunlight, for example).

2. Check all supply voltage connections, and make

sure the wiring is correct. (Refer to Figure 10 or

Figure 11 for the duct probe transmitter and

Figure 7 or Figure 8 for the wall mount

transmitter.)

3. Verify the jumper positions. If the unit is not

delivering an output, make sure the output jumper

is selected for the appropriate application.

4. Replace the unit if the troubleshooting suggestions

fail to remedy the problem.

Repairs and Replacement

The HE-67xx units are not field repairable. As with any

electrical device, keep the air vents clean and free

from dust or obstruction. The HT-670x controllers have

been designed for maintenance-free operation. 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.

TRUERH Series HT-670x Humidity Transmitters Installation Instructions 7

Technical Specifications

Product

RUE

RH Series HT-670x Humidity Transmitters

Power Requirements

If 0 to 10 VDC output jumper position is used:

20 to 30 VAC, 50/60 Hz at 15 mA

or 14 to 30 VDC at 6 mA, Class 2

If 4 to 20 mA output jumper position is used:

16 to 30 VDC at 20 mA, Class 2

Output Range

(Jumper Selectable) 0 to 10 VDC (5 k ohm minimum load impedance) or 4 to 20 mA DC (2-wire current loop)

Maximum load impedance = 50 x (supply voltage—15.5)

Humidity Transmitter

Accuracy HT-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)

HT-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)

Humidity Element All-Polymer™ element

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

Ambient Operating

Conditions

32 to 122°F (0 to 50°C)

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

Survival Operating

Conditions

-20 to 140°F (-29 to 60°C)

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

Ambient Storage

Conditions -40 to 176°F (-40 to 80°C)

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

Materials Wall Mount: White plastic enclosure for surface or standard wallbox mounting,

including hardware

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

Dimensions Wall Mount (H x W x D): 3.20 x 3.20 x 1.34 in. (81 x 81 x 34 mm)

Duct Probe (H x W x D): 3.25 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

0.7 lb (0.3 kg)

Agency Compliance

Duct probe material: 94-5 V 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

Building Efficiency

507 E. Michigan Street, Milwaukee, WI 53202

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

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