Johnson Controls HE-6800 Series User manual

HE-6800 Series Humidity Transmitters with
Temperature Sensor Installation Guide
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 occupancy 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 andLight-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.
Important: Use the HE-6800 Series Humidity
Transmitter only to provide input 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. Approved
March 14, 2003.
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 the users will be required to
correct the interference at their own expense.
Warning (Part 15.21)
Changes or modifications not expressly approved by the
party responsible for compliance could void the user’s
authority to operate the equipment.
Canada
This Class (A) digital apparatus meets all the requirements
of the Canadian Interference-Causing Equipment
Regulations.
Cet appareil numérique de la Classe (A) respecte toutes
les exigences du Règlement sur le matériel brouilleur du
Canada.
Industry Canada Statement(s)
This device complies with Industry Canada licence-exempt
RSS standard(s). Operation is subject to the following two
conditions:
1. This device may not cause interference, and
2. This device must accept any interference, including
interference that may cause undesired operation of
the device.
Le présent appareil est conforme aux CNR d'Industrie
Canada applicables aux appareils radio exempts de
licence. L'exploitation est autorisée aux deux conditions
suivantes :
1. L'appareil ne doit pas produire de brouillage, et
2. L'utilisateur de l'appareil doit accepter tout
brouillage radioélectrique subi, même si le
brouillage est susceptible d'en compromettre le
fonctionnement.
Installation
Special Tools Needed
A 1/16 in. (1.5 mm) Allen wrench or a Johnson Controls®
T-4000-119 Allen-Head Adjustment Tool is required during
installation.
Accessory
Installing the HE-6800 Series Humidity Transmitter on
a wallbox requires accessory NS-WALLPLATE-0, ordered
separately.
Mounting
About this task:
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
*241040928F*
Part No. 24-10409-28 Rev. F
2021-04-02
HE-68xx-xN00WS

• 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:
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.
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 and Setup and 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 rotate 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.
Wiring
NOTICE
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.
NOTICE
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 250 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 recommendations for grounding the shield.
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
HE-6800 Series Humidity Transmitters with Temperature Sensor Installation Guide2

6 and Terminal 8 to short LED (with DIP switch set for LED
On).
Figure 1: Terminal Block Wiring Designations (LED
ON Mode [Factory Default] and Manual Override PB
Enabled)
Figure 2: Terminal Block Wiring Designations (LED OFF
Mode and Manual Override PB Enabled)
.
Figure 3: Terminal Block Location and Wiring
Table 1: Terminal Block Wiring
Terminal Signal Designation
1Temperature Sensor and Manual Override
2Temperature Sensor Common
3Setpoint Common and LED Common
4Setpoint
51
24 VAC (+15 VDC – VMA Only1)
6Common (for Power, RH Output, Zone Bus,
or Manual Override)
7Zone Bus
8LED and Manual Override
9RH Output (0 to 10 VDC)
1 The +15 VDC power supply is used only when an HE-6800
Series Humidity Transmitter is connected to a VMA
Controller.
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
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.
For all transmitter models, the factory default LED mode
is LED Mode:ON. The DIP switch positions enable/disable
the functions listed in Table 3
NOTICE
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.
HE-6800 Series Humidity Transmitters with Temperature Sensor Installation Guide 3

NOTICE
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.
Figure 4: Controller ConfigurationDIP Switch Positions
Table 2: Controller Compatibility with LED Mode and PB
Features Recognized by Controller
Types of
HE-6800
LED Mode
(Figure 4)
Features
Enabled on
HE-6800 AHU UNT1100
VAV1xx or
UNT1xx
1VMA12
Series1VMA14 Series1
2
LED Off2
Sensor and
Manual
Override
No Yes Yes Yes Yes
LED On Sensor, Manual
Override, and
LED
No No No Yes Yes
All Models
No PB Room Sensor
Only
Yes Yes Yes Yes Yes
1 For these controllers, the LED appears brighter 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
Functions
LED
Mode
Enabl
ed
Disab
led Switch Positions
OFF Senso
r, PB
LED Switch positions are down, up,
and down. The LED remains off at
all times.
ON LED,
Senso
r, PB
--- Switch positions are factory set
up, down, and up. The controller
determines the LED mode.
NO
PB
Senso
r
LED
and
PB
Switch positions are all down.
LED is off, and the PB does not
function.
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 default factory
setting is OFF (0 to 10 VDC output).
The HE-6800 also features a power supply selection DIP
switch. If you are using the transmitter where supply
voltage is 24 VAC or higher, set this switch to ON.
Figure 5: Humidity Output and Power Supply DIP
Switch Positions
Temperature Setpoint
Adjust the setpoint using the setpoint adjustment
dial. Rotate clockwise to raise the temperature; rotate
counterclockwise to lower the temperature.
Troubleshooting
About this task:
HE-6800 Series Humidity Transmitters are recommended
for use only with Johnson Controls digital controllers. If
the HE-6800 is not functioning properly, use the following
procedure to identify the problem and determine a
solution:
HE-6800 Series Humidity Transmitters with Temperature Sensor Installation Guide4

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.
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.
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.
Repair Information
Do not field repair the HE-6800 Series Humidity
Transmitters. As with any electrical 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
1ACC-INSL-01Wallbox Mounting Pad (10 per Bag)
ACC-INSL-11Surface Mounting Pad (10 per Bag)
NS-
WALLPLATE-0
Adapts an HE-6800 Series Humidity
Transmitter (3-3/16 x 3-3/16 in. [80 x 80
mm]) to a Standard 3-3/16 x 4-3/4 in.
(80 x 120 mm) Wallbox
T-4000-119 Allen-Head Adjustment Tool (30 per
Bag)
1 These foam pads help prevent drafts from entering the
unit through the wall, and make installation easier when
mounting on an uneven surface.
Technical Specifications
Table 5: HE-6800 Series Humidity Transmitters with Temperature Sensor technical specifications
Specification Description
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)
Recommended
Temperature Measurement Range 32 to 131°F (0 to 55°C)
Full Range 0 to 100% RHHumidity
Measurement
Range Calibrated Range 10 to 90% RH
HE-6800 Series Humidity Transmitters with Temperature Sensor Installation Guide 5

Table 5: HE-6800 Series Humidity Transmitters with Temperature Sensor technical specifications
Specification Description
Sensor Type 1,000 ohm Thin Film Nickel
Coefficient Approximately 3 ohm per F° (5.4 ohm per C°)
Reference
Resistance
1,000 ohm at 70°F (0°C)
Nickel(HE-68Nx
Models)
Accuracy ±0.34F° 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
1,000 ohm at 32°F (0°C)
Platinum(HE-68Px
Models)
Accuracy ±0.35F° at 70°F (±0.19C° at 21°C)
Sensor Type 10,000 ohm NTC Thermistor
Coefficient Nonlinear NTC, Johnson Controls Type II
Reference
Resistance
10,000 ohm at 77°F (25°C)
Temperature
Sensor
Nonlinear NTC,
Thermistor,Type
II(HE-686x
Models)
Accuracy ±0.9F° (±0.5C°) at 32 to 158°F (0 to 70°C)
Humidity Sensor Type Capacitive Polymer Sensor
HE-68x2 Models ±2% RH for 20 to 80% RH at 50 to 95°F (10 to 35°C);±4% RH for 10 to 20% RH
and 80 to 90% RH at 50 to 95°F (10 to 35°C)
Humidity
Element
Accuracy HE-68x3 Models ±3% RH for 20 to 80% RH at 77°F (25°C);±6% RH for 10 to 20% RH and 80 to 90%
at 77°F (25°C)
Range Warmer/CoolerSetpoint
Resistance 1500 Ohms
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
Controllers Only)
Ambient Operating Conditions 32 to 131°F (0 to 55°C), 10 to 95% RH Noncondensing;86°F (30°C) Maximum
Dew Point
Ambient Storage Conditions -40 to 140°F (-40 to 60°C), 5 to 95% RH Noncondensing;86°F (30°C) Maximum
Dew Point
Materials White ThermoplasticProtection: IP30 (EN 60529)
HE-68xx-0 Models 3-3/16 x 3-3/16 x 1-5/16 in. (80 x 80 x 32 mm)Dimensions(H x
W x D) HE-68xx-1 Models 3-3/16 x 3-3/16 x 1-7/16 in. (80 x 80 x 35 mm)
Shipping Weight 0.44 lb (0.20 kg)
United States UL Listed, File E107041,CCN PAZX, Under UL 916, Energy Management
Equipment
Compliance
Canada UL Listed, File E107041,CCN PAZX7, Under CAN/CSA C22.2 No. 205, Signal
Equipment
Europe CE Mark – Johnson Controls, Inc., declares that this product is in compliance
with the essential requirements and other relevant provisions of the EMC
Directive, WEEE Directive, and RoHS Directive.
Australia and New
Zealand
RCM, Australia/NZ Emissions Compliant
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 shall not be liable for damage
resulting from misapplication or misuse of its products.
HE-6800 Series Humidity Transmitters with Temperature Sensor Installation Guide6

Product warranty
This product is covered by a limited warranty, details of which can be found at www.johnsoncontrols.com/
buildingswarranty.
Software terms
Use of the software that is in (or constitutes) this product, or access to the cloud, or hosted services applicable to
this product, if any, is subject to applicable end-user license, open-source software information, and other terms
set forth at www.johnsoncontrols.com/techterms. Your use of this product constitutes an agreement to such terms.
Patents
Patents: https://jcipat.com
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HE-6800 Series Humidity Transmitters with Temperature Sensor Installation Guide 7

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are subject to change without notice.
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