Johnson Controls HE-6800 Series Installation Guide

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

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

Wiring

Figure 1: Terminal Block Wiring Designations

(LED ON Mode [Factory Default] and Manual Override PB Enabled)

Temperature

Sensor

Temperature

Sensor

Common

Setpoint

Common

Setpoint

24 VAC/ +15 VDC

1k Ohms

Common

Zone Bus

Manual

Override

Button

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

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

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