Product Overview

Automation and Control Solutions
Honeywell International Inc. Honeywell Limited-Honeywell Limitée
1985 Douglas Drive North 35 Dynamic Drive
Golden Valley, MN 55422 Toronto, Ontario M1V 4Z9
customer.honeywell.com
TEMPERATURE SENSORS FOR THE T775 SERIES 2000 STAND-ALONE CONTROLLER
® U.S. Registered Trademark
© 2009 Honeywell International Inc.
62-0265—02 E.K. Rev. 05-09
INSTALLATION
The 50021579-001 and T775-SENS-WR/WT remote probe
temperature sensors are single point temperature sensors
with Stainless Steel (304 Series) probes. Use care when
installing the probes. Pay attention not to kink the cable,
especially on the 5 ft units. The red/black wires should be
securely connected to the controller. The probe must be
strapped tightly to the pipe, duct, or device that is being
monitored. A loose attachment could affect the accuracy. To
ensure good contact, thermal grease is recommended.
Insulating the sensor will help the overall accuracy. When
installing the T775-SENS-WR sensor (5 ft cable), it may be
necessary to wire tie the cable, depending upon the
application.
TROUBLESHOOTING
WEEE Directive
At the end of their useful life the packaging
and product should be disposed of via a
suitable recycle centre. Do not dispose of
with household waste. Do not burn.
If... Then...
Sensor reads 0 ohms or very low Sensor or wires are shorted together
Verify that (2) leads are not shorted to the probe.
Sensor reads infinity or very high Sensor or wires are cut or open
Erratic readings Bad wire connections - Condensation or Moisture problem
Inaccurate Sensor If you suspect that the sensor is not reading within the specified tolerance, disconnect the
sensor wires from the Building Management System (DDC Controller) and attach a NIST
traceable ohmmeter across the two wires. Compare the reading to the table listed below.
If you feel that the sensor is different from the table below please contact ACI for further
assistance.