HE-6800 Series Humidity Transmitters with
24-10409-28, Rev. E
Temperature Sensor
Installation Instructions
HE-68xx-xN00WS
Refer to the QuickLIT website for the most up-to-date version of this document.
Applications
The HE-6800 Series Humidity Transmitters with
Temperature Sensor provide both humidity and
temperature sensing in room wall-mount applications.
The transmitter offers local warmer/cooler temperature
setpoint adjustment and temporary oc cu pancy
override. The humidity sensor provides Relative
Humidity (RH) accuracy of ±2% or ±3% RH and
measures RH over the entire range of 0 to 100%.
A warmer/cooler dial is included on certain models for
minor temperature adjustments from the setpoint. All
models feature an occupancy override button that
allows the user to override time-of-day scheduling
when the space is occupied outside of the normal
occupied hours schedule. The transmitter also includes
DIP switches to enable or disable override and
Light-Emitting Diode (LED) functions. In addition, all
models feature a user-selectable 0 to 5 VDC or
0 to 10 VDC humidity output switch, and a power
supply selection switch.
The HE-6800 Series Humidity Transmitters include
screw terminal block terminations that provide flexibility
for field wiring. All models include a 6-pin modular jack
access port for connecting accessories to the
Zone Bus. This feature allows a technician to
commission or service the controller via the transmitter.
Part No. 24-10409-28, Rev. E
Issued February 2016
North American Emissions Compliance
United States
This equipment has been tested and found to
comply with the limits for a Class A digital device
pursuant to Part 15 of the FCC Rules. These limits
are designed to provide reasonable protection
against harmful interference when this equipment is
operated in a commercial environment. This
equipment generates, uses, and can radiate radio
frequency energy and, if not installed and used in
accordance with the instruction manual, may cause
harmful interference to radio communications.
Operation of this equipment in a residential area
may cause harmful interference, in which case users
will be required to correct the interference at their
own expense.
Canada
This Class (A) digital apparatus meets all the
requirements of the Canadian Interference-Cau sing
Equipment Regulations.
Cet appareil numérique de la Classe (A) respecte
toutes les exigences du Règlement sur le matériel
brouilleur du Canada.
IMPORTANT: Use the HE-6800 Series Humidity
Transmitter only to provide in put to equipment under
normal operating conditions. Where failure or
malfunction of the 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 transmitter.
HE-6800 Series Humidity Transmitters with TemperatureSensor
Installation Instructions
1
Installation
Special Tools Needed
A 1/16 in. (1.5 mm) Allen wrench or a
Johnson Controls® T-4000-1 19 Allen-Head Adjustment
Tool is required during installation.
Accessories
Installing the HE-6800 Series Humidity Transmitter on
a wallbox requires accessory NS-WALLPLATE-0,
ordered separately.
Mounting
Location Considerations
Locate the HE-6800 Series Humidity Transmitter:
• on a partitioning interior wall, and approximately
5 ft (1.5 m) above the floor in a location of average
temperature
• away from direct sunlight, radiant heat, outside
walls, behind doors, air discharge grills, stairwells,
or outside doors
• away from steam or water pipes, warm air stacks,
unconditioned areas (no heating and no cooling),
or sources of electrical interference
Note: The HE-6800 Series Humidity Transmitter is
shock and vibration resistant; however, be careful not
to drop the unit or mount it where it could be exposed
to excessive vibration.
The following ambient operating conditions apply:
• Temperature: 32 to 131°F (0 to 55°C)
• Humidity: 10 to 95% RH, noncondensing;
86°F (30°C) maximum dew point
To mount the transmitter to the wall:
2. Insert a blade screwdriver into the slot next to the
security screw location, and then carefully pry the
top edge of the transmitter assembly away from its
mounting base and remove.
IMPORTANT: Do not remove the Printed Circuit
Board (PCB). Removing the PCB voids the product
warranty.
3. Pull out approximately 6 in. (152 mm) of cable from
the wall, and insert the cable through the hole in
the mounting base.
4. Align the mounting base on the wall, and use the
base as a template to mark the location of the two
mounting holes on the surface.
Note: Make sure the mounting base is positioned
correctly with the security screw located on the top
edge of the base.
5. Secure the mounting base to the wall using the
appropriate mounting hardware (field furnished).
6. Set DIP switches for the desired operation. See the
Internal Wiring Diagrams
Adjustments sections for additional information.
7. Align the tabs on the bottom edge of the mounting
base with the slots on the bottom edge of the
transmitter assembly , and rot ate the assembly onto
its mounting base.
Note: Make sure the terminal block pins align with the
holes in the terminal block.
8. Use a 1/16 in. (1.5 mm) Allen wrench or
Johnson Controls T-4000-119 Allen-Head
Adjustment Tool to tighten the security screw and
fasten the network transmitter assembly to the
mounting base.
and Setup and
1. Use a 1/16 in. (1.5 mm) Allen wrench or
Johnson Controls T-4000-119 Allen-Head
Adjustment Tool to loosen the security screw on
the top of the unit.
HE-6800 Series Humidity Transmitters with Temperature Sensor Installation Instructions
2
Wiring
Figure 1: Terminal Block Wiring Designations
(LED ON Mode [Factory Default] and Manual Override PB Enabled)
RT
D
1
Temperature
Sensor
2
Temperature
Sensor
Common
3
Setpoint
Common
4
Setpoint
Setpoint
5
24 VAC/ +15 VDC
1k Ohms
6
Common
7
Zone Bus
Manual
Override
Button
8
LED
LED
Internal wiring diagram with DIP switches set as
shown on the right, LED Mode = ON and Manual
Override push button enabled.
FIG:term_blck_LED
NO
12
3
9
RH Output
0–10 VDC
Risk of Property Damage.
Do not apply power to the system before checking all
wiring connections. Short circuited or improperly
connected wires may result in permanent damage to
the equipment.
Risque de dégâts matériels.
Ne pas mettre le système sous tension avant d'avoir
vérifié tous les raccords de câblage. Des fils formant
un court-circuit ou connectés de façon incorrecte
risquent d'endommager irrémédiablement
l'équipement.
IMPORTANT: Use copper conductors only. Make
all wiring connections in accordance with local,
national, and regional regulations.
Keep wires as short as possible to minimize sensor
error. Each 2 50 ft (76 m) run of 18 AWG wire or
50 ft (15 m) of 24 AWG wire creates 1F° (0.56C°) error
for a nickel sensor or 1.5F° (0.83C°) error for a
platinum sensor due to wire resistance.
To maintain less than 1F° (0.56C°) error for nickel or
1.5F° (0.83C°) error for platinum, hold the total
resistance of all sensor wiring below 3 ohm. When
wiring the HE-6800, do not run low voltage wiring in the
same conduit as line voltage wiring or other conductors
supplying highly inductive loads.
Internal Wiring Diagrams
Internal wiring diagrams are shown in Figure 1 and
Figure 2. Terminal block designations are shown in
Figure 3. The terminals are identified in Table 1. See
the Setup and Adjustments
section and Figure 4 for an
explanation of the LED and Pushbutton (PB) modes.
Make connections pairing the following wires:
• sensor (Terminal 1 and Terminal 2)
• setpoint (Terminal 3 and Terminal 4)
• Zone Bus and Common (COM)
(Terminals 6 and 7)
Shielding is not required. If used, follow the system
controller’s recommenda tio ns for gr ou nd in g th e shie ld .
Note: The Manual Override PB does not respond
when the DIP switch positions are all down (LED mode
NO PB, as shown in Figure 2 and Figure 4).
Manual Override is selected for either Terminals 1 and
6 to short sensor (with DIP switch set for LED Off) or
Terminal 6 and Terminal 8 to short LED (with DIP
switch set for LED On).
HE-6800 Series Humidity Transmitters with Temperature Sensor Installation Instructions
3
.
Figure 2: Terminal Block Wiring Designations (LED OFF Mode and Manual Override PB Enabled)
RT
D
1
Temperature
Sensor
2
Temperature
Sensor
Common
3
Setpoint
Common
4
Setpoint
Setpoint
5
24 VAC/ +15 VDC
6
Common
7
Zone Bus
Manual
Override
Button
8
LED
LED
Internal wiring diagram with DIP switches set
as shown on the right, LED Mode = OFF and
Manual Override push button enabled.
FIG:term_blk_LED_OFF
Not Connected
NO
12
3
9
RH Output
0–10 VDC
Figure 3: Terminal Block Location and Wiring
FIG:term_b lk
Table 1: Terminal Block Wiring
Terminal Signal Designation
1 Temperature Sensor and Manual Override
2 Temperature Sensor Common
1. The +15 VDC power supply is used only when an
HE-6800 Series Humidity Transmitter is connected to
a VMA Controller.
Setup and Adjustments
3 Setpoint Common and LED Common
4 Setpoint
5
24 VAC (+15 VDC – VMA Only
1
)
6 Common (for Power, RH Output, Zone
Bus, or Manual Override)
7 Zone Bus
8 LED and Manual Override
9 RH Output (0 to 10 VDC)
HE-6800 Series Humidity Transmitters with Temperature Sensor Installation Instructions
Controller Configuration DIP Switch and LED Mode
A DIP switch configures the HE-6800 for use with the
desired controller by enabling or disabling the manual
override PB and the LED. To change the controller
mode, use the three position DIP switch located on the
PCB. See Figure 4 and consult Table 2 to determine
the controller compatibility.
4
For all transmitter models, the factory default
Figure 4: Controller Configuration
DIP Switch Positions
DIP switch in the
default position.
KEY:
Switch is in up position (ON)
Switch is in down position (OFF)
Note: Read switch positions
from left to right.
LED MODE
OFF
ON
NO
PB
NO
12
3
REMOVING THE CIRCUIT
BOARD VOIDS WARRANTY
FIG:dip_switch
LED mode is LED Mode:ON. The DIP switch positions
enable/disable the functions listed in Table 3
Risk of Property Damage.
Do not use switch settings other than those shown in
Figure 4. Using other switch settings may cause
incorrect controller operation or damage to the
element, controller, [and/or] controlled equipment.
Risque de dégâts matériels.
Ne pas utiliser un paramétrage des commutateurs
différent de celui-ci illustré à la Figure 4. L'utilisation
d'autres paramètres de commutateurs risque de
provoquer un fonctionnement incorrect du contrôleur
ou d'endommager l'élément, le contrôleur [et/ou]
l'équipement contrôlé.
Table 2: Controller Compatibility with LED Mode and PB
Types of
HE-6800
All Models
LED Mode
(Figure 4)
Features
Enabled on
HE-6800
LED Off
2
LED On Sensor,
No PB Room Sensor
Sensor and
Manual
Override
Manual
Override, and
LED
Only
AHU UNT1100 VAV1xx or
No Yes Yes Yes Yes
No No No Yes Yes
Yes Yes Yes Yes Yes
Features Recognized by Controller
VMA12
UNT1xx
Series
1
VMA14
Series
1
1. For these controllers, the LED appears brig hter when pressing the manual override PB.
2. Holding the manual override PB for more than 2 seconds may affect the sensor reading.
Table 3: LED Mode and Functions
Humidity Output and Power Supply Selection Switch
A 0 to 10 VDC or 0 to 5 VDC selector DIP switch
enables you to change the output for % RH. The
LED Mode Functions Switch Positions
Enabled Disabled
OFF Sensor, PB LED Switch positions are down, up, and down. The LED remains off at all times.
ON LED, Sensor,
PB
--- Switch positions are factory set up, down, and up. The controller
determines the LED mode.
NO PB Sensor LED and PB Switch positions are all down. LED is off, and the PB does not function.
default factory setting is OFF (0 to 10 VDC output).
HE-6800 Series Humidity Transmitters with Temperature Sensor Installation Instructions
5
The HE-6800 also features a power supply selection
Figure 5: Humidity Output and Power Supply
DIP Switch Positions
DIP switch in the
default position.
KEY:
Switch is in up position (ON)
Switch is in down position (OFF)
NO
12
FIG:pwr_bst_ds
Switch 2
OFF = Low supply voltage operation
ON = High supply voltage operation
Switch 1
OFF = 0–10 VDC output, corresponding to 0–100%RH
ON = 0–5 VDC output, corre spo nding to 0–100%RH
DIP switch. If you are using the transmitter where
supply voltage is 24 VAC or higher, set this switch to
ON.
3. Check all supply voltage connections. See
Figure 1, Figure 2, or Figure 3, if necessary.
4. Check the settings:
• Verify that any scaling modifications, setpoint
adjustments, and overrides have been saved
and downloaded to the controller.
• Check the override status (Temporary
Occupancy mode vs. Unoccupied mode) at the
controller.
• Check the setpoint settings.
5. Confirm DIP switch positions if:
• the LED remains on or is dim
• the room sensor reading is outside of the
normal range for the space being sensed
Note: Make sure the DIP switch setting is correct for
the controller used with the HE-6800.
Temperature Setpoint
Adjust the setpoint using the setpoint adjustment dial.
Rotate clockwise to raise the temperature; rotate
counterclockwise to lower the temperature.
Troubleshooting
HE-6800 Series Humidity Transmitters are
recommended for use only with Johnson Controls
6. Replace the HE-6800 if the troubleshooting
suggestions fail to remedy the problem.
Accessories
Contact the nearest Johnson Controls representative
to order any of the parts listed in Table 4.
Note: Review the technical specifications of the
accessories prior to their use in an application.
digital controllers. If the HE-6800 is not functioning
properly, use the following procedure to identify the
problem and determine a solution:
1. Check that the HE-6800 is mounted in a location
indicative of the space temperature (for example,
away from drafts or sunlight).
2. Verify that the wiring is correct.
Repair Information
Do not field repair the HE-6800 Series Humidity
Transmitters. As with any electrica l device, keep the air
vents clean and free from dust or obstruction. If an
HE-6800 Series Humidity Transmitter fails to operate
within its specifications, replace the unit. For a
replacement transmitter, contact the nearest
Johnson Controls representative.
Table 4: Optional Accessories
Product Code Number Description
ACC-INSL-0
ACC-INSL-1
NS-WALLPLATE-0 Adapts an HE-6800 Series Humidity Transmitter (3-3/16 x 3-3/16 in. [80 x 80 mm]) to a
T-4000-119 Allen-Head Adjustment Tool (30 per Bag)
1
1
Wallbox Mounting Pad (10 per Bag)
Surface Mounting Pad (10 per Bag)
Standard 3-3/16 x 4-3/4 in. (80 x 120 mm) Wallbox
1. These foam pads help prevent drafts from entering the unit through the wall, and make installation easier when mounting on
an uneven surface.
HE-6800 Series Humidity Transmitters with Temperature Sensor Installation Instructions
6
Technical Specifications
HE-6800 Series Humidity Transmitters with Temperature Sensor (Part 1 of 2)
Power Requirements 4.5 to 7.5 mA at 14 to 30 VDC and 5K ohm Load, or 18 to 25 mA at 20 to 30 VAC
and 5K ohm Load
Terminations 9-Position Screw Clamp Terminal Block
Wire Size 16 to 24 AWG (1.3 to 0.6 mm Diameter); 18 AWG (1.0 mm Diameter)
Temperature Measurement Range 32 to 131°F (0 to 55°C)
Humidity
Measurement
Range
Temperature
Sensor
Humidity Sensor Type Capacitive Polymer Sensor
Humidity
Element
Accuracy
Setpoint Range Warmer/Cooler
Temperature Sensor Time Constant 10 Minutes at 10 ft per Minute
Manual Override Integral Momentary Pushbutton (DIP Switch Selectable)
LED Green LED Indicates Three Modes of Operation (VMA12 and VMA14 Series
Ambient Operating Conditions 32 to 131°F (0 to 55°C), 10 to 95% RH Noncondensing;
Ambient Storage Conditions -40 to 140°F (-40 to 60°C), 5 to 95% RH Noncondensing;
Materials White Thermopla stic
Dimensions
(H x W x D)
Shipping Weight 0.44 lb (0.20 kg)
Full Range 0 to 100% RH
Calibrated Range 10 to 90% RH
Nickel
(HE-68Nx Models)
Platinum
(HE-68Px Models)
Nonlinear NTC,
Thermistor,
Type II
(HE-686x Models)
HE-68x2 Models ±2% RH for 20 to 80% RH at 50 to 95°F (10 to 35°C);
HE-68x3 Models ±3% RH for 20 to 80% RH at 77°F (25°C);
HE-68xx-0 Models 3-3/16 x 3-3/16 x 1-5/16 in. (80 x 80 x 32 mm)
HE-68xx-1 Models 3-3/16 x 3-3/16 x 1-7/16 in. (80 x 80 x 35 mm)
Recommended
Sensor Type 1,000 ohm Thin Film Nickel
Coefficient Approximately 3 ohm per F° (5.4 ohm per C°)
Reference
Resistance
Accuracy ±0.3 4F° at 70°F (±0.18C° at 21°C)
Sensor Type 1,000 ohm Thin Film Platinum
Coefficient Approximately 2 ohm per F° (3.9 ohm per C°)
Reference
Resistance
Accuracy ±0.3 5F° at 70°F (±0.19C° at 21°C)
Sensor Type 10,000 ohm NTC Thermistor
Coefficient Nonlinear NTC, Johnson Controls Type II
Reference
Resistance
Accuracy ±0.9 F° (±0.5C°) at 32 to 15 8°F (0 to 70°C)
±4% RH for 10 to 20% RH and 80 to 90% RH at 50 to 95°F (10 to 35°C)
±6% RH for 10 to 20% RH and 80 to 90% at 77°F (25°C)
Controllers Only)
86°F (30°C) Maximum Dew Point
86°F (30°C) Maximum Dew Point
Protection: IP30 (EN 60529)
1,000 ohm at 70°F (0°C)
1,000 ohm at 32°F (0°C)
10,000 ohm at 77°F (25°C)
HE-6800 Series Humidity Transmitters with Temperature Sensor Installation Instructions
7
Metasys® and Johnson Controls® are registered trademarks of Johnson Controls, Inc.
All other marks herein are the marks of their respective owners. © 2016 Johnson Controls, Inc.
Building Efficiency
507 E. Michigan Street, Milwaukee, WI 53202
HE-6800 Series Humidity Transmitters with Temperature Sensor (Part 2 of 2)
Compliance United States UL Listed, File E107041,
CCN PAZX, Under UL 916, Energy Management Equipment
Canada UL Listed, File E107041,
Europe CE Mark – Johnson Controls, Inc., declares that this product is in compliance
Australia and New
Zealand
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 damage 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
CCN PAZX7, Under CAN/CSA C22.2 No. 205, Signal Equipment
with the essential requirements and other relevant provisions of the
EMC Directive, WEEE Directive, and RoHS Directive.
RCM, Australia/NZ Emissions Compliant
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
HE-6800 Series Humidity Transmitters with Temperature Sensor Installation Instructions
Published in U.S.A. www.johnsoncontrols.com
8
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