Johnson Controls HT-69020NP-0 User manual

HT-69020NP-0, HT-69030NP-0 Duct Probe RH
Transmitter Installation Guide
Introduction
The HT-69 Series Duct Probe Relative Humidity (RH)
Transmitters use a highly accurate and reliable thermoset
polymer-based capacitance humidity sensor and state-of-
the-art digital linearization and temperature-compensated
circuitry to monitor humidity levels in a duct. The humidity
sensor is encapsulated in a 60 micron HDPE filter at the
end of a 9 in. (230 mm) stainless steel (S/S) probe and a
compact enclosure.
WARNING
Read these instructions carefully before you install and
commission the humidity transmitter. Failure to follow
these instructions may result in product damage. Do
not use in an explosive or hazardous environment,
with combustible or flammable gases, as a safety or
emergency stop device, or in any other application
where failure of the product could result in personal
injury. Take electrostatic discharge precautions during
installation and do not exceed the device ratings.
Figure 1: HT-69 Duct Probe RH Transmitter
Dimensions
Figure 2: Dimensions of the HT-69 Duct Probe RH
Transmitter
Callout Description
A 60 micron HDPE filter
B 304 series S/S probe
C Foam gasket
D 0.5 in. (12.7 mm) NPT
*241102556A*
Part No. 24-11025-56 Rev. A
2022-11-11
(barcode for factory use only)
HT-69020NP-0, HT-69030NP-0

Mounting
The transmitter installs directly into any air duct with a
minimum width or diameter of 10 in. (25.5 cm).
- Select a suitable installation area in the middle of
the duct wall.
- To achieve the best reading, do not place in an area
where air stratification may be present.
- Mount the sensor at least 5 ft. (1.5 m) in either
direction from elbows, dampers, filters, or other
duct restrictions.
- Avoid areas that expose the transmitter to
vibrations or rapid temperature changes.
To install the transmitter, complete the following steps:
1. When you select a suitable spot, drill a 0.6 in. (15
mm) to 0.75 in. (20 mm) hole for the probe.
2. Slide the probe into the drilled hole until the
enclosure is flush against the duct. The airflow
direction is not important.
3. Secure the enclosure to the duct with two No. 10 x
1 in. (25 mm) self-tapping screws (not provided).
4. Tighten the screws until the enclosure is tight
against the duct so that there is no movement
of the enclosure. A foam gasket on the back of
the enclosure provides a tight seal against any air
leaks. See Step 1 in Figure 3.
5. The enclosure includes a hinged cover with a latch.
To open the cover, pull slightly on the latch on the
right side of the enclosure. At the same time, pull
on the cover as shown in Step 2 of Figure 3.
6. A 0.5 in. NPT threaded connection hole is in the
bottom of the enclosure. Screw the EMT or cable
gland connector into the threaded connection hole
until tight. See Step 3 in Figure 3.
Note: Preferably use weatherproof EMT or
cable gland fittings. The E-style enclosure
includes 0.5 in. NPT to M16 thread adaptor
and cable gland fitting.
7. Make wire connections as shown in the wire
diagram in Wiring.
8. Swing the door closed until it securely latches. For
added security, install the two provided screws in
the integrated screw tabs. See Step 4 of Figure 3.
Wiring
• Deactivate the 24 VAC/DC power supply before you
make all connections to the device to prevent electrical
shock or equipment damage.
• Use 14 AWG to 22 AWG shielded wiring for all
connections and do not locate the device wires in the
same conduit with wiring that supplies inductive loads
such as motors. Make all connections in accordance
with national and local codes.
• Pull at least 6 in. (15 cm) of wire into the enclosure,
then complete the wiring connection according to
the wire diagram for the applicable power supply and
output signal type. See Figure 4.
• Place the output switch in the required position to
select the required signal output type (mA or VDC), as
shown in Step 2 of Figure 4. The factory default setting
is 4 mA to 20 mA.
• If you select mA, no further output set up is required.
If you select VOLT output as shown in Figure 5, place
the voltage output switch to the required span position,
that is 10 VDC = 0 VDC to 10 VDC. The factory default
setting is 0 VDC to 10 VDC. See Step 1 of Figure 4.
• Connect the DC positive or the AC voltage hot side to
the PWR terminal. For voltage output or AC power,
connect the supply common to the COM terminal.
The device is reverse voltage-protected and does
not operate if you connect it backwards. The device
contains a half-wave power supply so the supply
common is the same as the signal common. See Step 3
of Figure 4.
• The analog output is available on the OUT terminal.
Check the controller Analog Input to determine the
correct connection before you apply power as shown in
Step 3 of Figure 4.
HT-69020NP-0, HT-69030NP-0 Duct Probe RH Transmitter Installation Guide2

Figure 3: Mounting the HT-69 Duct Probe RH Transmitter
Callout Description
A EMT connector
B Thread adapter and cable gland fitting
Figure 4: Wiring of the HT-60 Duct Probe Transmitter
Callout Description
A Wiring for output signal and 24 VDC power from controller
B Wiring for 4 mA to 20 mA loop-powered output and external 24 VDC power from controller
C Wiring for 4 mA to 20 mA loop-powered output and external 24 VDC external power supply
D Wiring for all output signals and external 24 VAC power transformer
HT-69020NP-0, HT-69030NP-0 Duct Probe RH Transmitter Installation Guide 3

Technical specifications
Table 1: HT-69020NP-0, HT-69030NP-0 Duct Probe RH Transmitter technical specifications
Specification Description
Sensor type Thermoset polymer based capacitive
Accuracy ±2% RH, 3% RH, or 5% RH from 5% RH to 95% RH
Measurement range 0% RH to 100% RH, noncondensing
Resolution ±0.01% RH
Hysteresis ±0.8% RH @ 25°C (77°F)
Response time 8 s
Stability <0.25% RH/year
Power supply 24 VAC/DC ±10%; 28 VAC/DC maximum
Consumption at 24 VDC 22 mA maximum
Input voltage effect Negligible over specified operating range
Output signal 4 mA to 20 mA current loop, 0 VDC to 5 VDC, or 0 VDC to 10 VDC, switch-
selectable
Output drive at 24 VDC Current: 550 ohm maximum
Voltage: 10K ohm minimum
Internal adjustments ZERO and SPAN pot
Protection circuitry Reverse voltage-protected and output limited
Ambient operating range -40°F (-40°C) to 122°F (50°C)
Operating humidity 5% RH to 95% RH, noncondensing
Storage temperature -22°F (-30°C) to 158°F (70°C)
Enclosure ABS, UL94-V0, IP65 (NEMA 4X)
Dimensions (H x W x D) 3.00 in. x 3.24 in. x 2.05 in. (76.2 mm x 82.5 mm x 52.0 mm)
Probe (L x D) 9 in. x 0.5 in. (230 mm x 12.7 mm), 304 S/S with porous filter
Wiring connections Screw terminal block, 14 AWG to 22 AWG
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 damages
resulting from misapplication or misuse of its products.
HT-69020NP-0, HT-69030NP-0 Duct Probe RH Transmitter Installation Guide4

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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Contact information
Contact your local branch office: www.johnsoncontrols.com/locations
Contact Johnson Controls: www.johnsoncontrols.com/contact-us
HT-69020NP-0, HT-69030NP-0 Duct Probe RH Transmitter Installation Guide 5

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are subject to change without notice.