Table of Contents
Advertisement
Quick Links
H7625B, H7626B, H7635B,C
H7636B, H7655B, H7656B
DUCT-MOUNT AND OUTDOOR-MOUNT HUMIDITY/
TEMPERATURE SENSORS
APPLICATION
The H76XXB Duct-Mount and H76XXC Outdoor-Mount
Humidity/Temperature Sensors are universal Relative
Humidity transmitters that can be powered with either a
+18 to 40 Vdc or 24 Vac supply . The devices are half
wave rectified. The transmitter also includes either a 20K
ohm NTC thermistor or a 1K platinum PTC (compatible
with the T775) for optional temperature use.
The humidity sensors are designed with a field selectable
4 to 20 mA, 0 to 5 Vdc, or 0 to 10 Vdc output signal
equivalent to 0 to 100% RH. All units are shipped from
the factory with a default setting to accept AC power with
three-wire, 0 to 10 Vdc output.
INSTALLATION
When Installing this Product...
1. Read these instructions carefully. Failure to follow
them could damage the product or cause a
hazardous condition.
2. Check ratings given in instructions and on the
product to ensure the product is suitable for your
application.
3. Installer must be a trained, experienced service
technician.
4. After installation is complete, check out product
operation as provided in these instructions.
CAUTION
Electrical Shock or Equipment Damage
Hazard.
Can shock individuals or short equipment
circuitry.
Disconnect power supply before installation.
CAUTION
Equipment Damage Hazard.
Improper wiring can damage the sensor
beyond repair.
Follow the wiring instructions carefully.
INSTALLATION INSTRUCTIONS
Mounting
The method of mounting depends on the particular
sensor application. The following procedures include
outdoor and duct applications. Also refer to the
instructions for the electronic control.
Duct mounting Configuration
The H7625B, H7626B, H7635B, H7636B, H7655B and
H7656B can be mounted in a duct to sense humidity and
temperature.
IMPORTANT
Select a location to expose sensor to average
duct humidity and temperature. Avoid locations
where stratification can cause sensing errors.
NOTES:
• Knockouts allow 1/2 in. conduit connection. To avoid
damaging board during installation, the cover can be
detached completely:
• Carefully remove wire plug from board.
• Set the cover aside.
1. Drill a 3/4" diameter hole in the duct where the
transmitter is to be mounted.
2. Insert the stainless steel probe into the hole until
the foam is in direct contact with the duct.
3. Attach the transmitter to the duct using the sup-
plied #8 X 3/4" self-tapping screws.
4. Remove the cover and install your conduit connec-
tor or watertight fitting. The outer ring is used when
using a 1/2" NPT conduit fitting.
5. After wiring the unit, place the cover back on and
gently turn it until it is tight.
Outdoor Mounting Configuration
The H7635C senses outdoor air humidity and
temperature. Mount this control where it can sense
average outdoor air humidity and temperature. Normally,
the north side of a building provides a suitable location.
NOTES:
• H7635C is weatherproof for outdoor use. Knockouts
allow 1/2 in. conduit connection.
• To avoid damaging board during installation, the cover
can be detached completely:
• Carefully remove wire plug from board.
• Set the cover aside.
62-0330-01
Advertisement
Table of Contents
Related Manuals for Honeywell H7625B
Summary of Contents for Honeywell H7625B
-
Page 1: Installation Instructions
+18 to 40 Vdc or 24 Vac supply . The devices are half Duct mounting Configuration wave rectified. The transmitter also includes either a 20K The H7625B, H7626B, H7635B, H7636B, H7655B and ohm NTC thermistor or a 1K platinum PTC (compatible H7656B can be mounted in a duct to sense humidity and with the T775) for optional temperature use. -
Page 2: Output Settings
H7625B, H7626B, H7635B,C H7636B, H7655B, H7656B Output Settings The transmitter should be mounted under an eave, shield, or in an area out of the elements or direct sunlight. The The humidity output signal can be adjusted for 0-5Vdc, 0- aluminum tube should point down when mounting the 10 Vdc or 4-20 mA using the switch block. - Page 3 H7625B, H7626B, H7635B,C H7636B, H7655B, H7656B REVERSE ACTING OUTPUT CAUTION The output can be changed to reverse acting mode. The output range stays the same but the corresponding RH Never connect or disconnect wiring with value is opposite. power applied.
- Page 4 H7625B, H7626B, H7635B,C H7636B, H7655B, H7656B TR23 Remote Sensor OUTDOOR HEAT SENSOR RELAY 2 DISCHARGE COMPRESSOR COMPRESSOR SENSOR CONTACTOR 4 CONTACTOR 2 T7350 SUBBASE W3/Y4 Y3 COMPRESSOR CONTACTOR 3 HEAT MOTION RELAY RELAY 1 SENSOR VOUT COM VIN (0-10 Vdc)
-
Page 5: Humidity Sensor
H7625B, H7626B, H7635B,C H7636B, H7655B, H7656B HUMIDITY SENSOR 4-20mA VIN COM VOUT +TEMP 2 2 2 2 2 2 2 3 3 3 1 2 3 4 5 6 7 8 9 0 1 2 1 1 1 1 1 1 1 1 1 1 2... -
Page 6: Rh Test And Configuration Dip Switch Settings (Table 3)
H7625B, H7626B, H7635B,C H7636B, H7655B, H7656B APPENDIX RH Test and Configuration DIP Switch Settings (Table 3) IMPORTANT Test mode will make the transmitter output a fixed 0%, • Only adjust these switches for troubleshooting or 50%, or 100% value. The sensor will not affect the recalibrating the sensor. -
Page 7: Increment Rh Output
H7625B, H7626B, H7635B,C H7636B, H7655B, H7656B CALIBRATION Decrement RH Output NOTE: This is only a single point calibration. All trans- mitters are factory calibrated to meet/exceed This will shift the RH output linearly down in 0.5% steps. published specifications. Field adjustment Switch 4 must be set to ON first. - Page 8 H7625B, H7626B, H7635B,C H7636B, H7655B, H7656B ® LonSpec™ is a trademark of Echelon Corporation. Automation and Control Solutions Honeywell International Inc. 1985 Douglas Drive North Golden Valley, MN 55422 Honeywell Limited-Honeywell Limitée 35 Dynamic Drive ® U.S. Registered Trademark Toronto, Ontario M1V 4Z9 ©...