User Guide

6 AG150119E
Reducing Temperature Sensing Errors
Best Practices
• Air movement between the conditioned space and the conduit and/or wall cav-
ity can skew sensor readings. Apply sealant inside the conduit and other holes
to block air leakage. See Mounting Components and Height on page 5.
• Mounting on an exterior wall will allow varying outside conditions to affect
the sensor’s readings. Mounting on or near a large interior thermal mass (e.g.,
concrete block wall) can slow the sensor’s response to room air temperature
changes. These mounting areas should be avoided, but a foam gasket (e.g.,
HPO-1161 or HPO-9002) mounted behind the backplate may help insulate the
sensor from a less-than-optimal wall surface. See Mounting Insulators on
page 7, Mounting Components and Height on page 5, and the accessories
available for the applicable product.
NOTE: A foam gasket may also help block air leakage from the wall cavity.
Troubleshooting (Location)
To correct or compensate for sensing problems caused by mounting issues:
• Reposition the sensor or the surrounding obstructions. See Mounting for
Optimal Temperature Sensing on page 3 and Mounting for Optimal Motion
Sensing on page 4.
• Insulate the sensor from air leakage and heating/cooling sources. See Reduc-
ing Temperature Sensing Errors on page 6 and Mounting Components and
Height on page 5.
• Adjust the sensor calibration to offset the environmental issues. See the
instructions for the sensor and/or conguration software.
Inaccurate sensing may also be caused by one of a variety of electrical or
conguration issues. See the installation and/or application guide of the sensor
for those factors.
Traditionally, thermostats and room temperature sensors have been mounted
approximately 60 inches (152 cm) from the floor. This has been considered
an effective height to measure the room temperature and to allow a person to
adjust a setpoint while standing.
However, for thermostats (and sensors with adjustable setpoint controls), the
Americans with Disabilities Act (ADA) has rules to ensure that public lodging
spaces and facilities remain accessible to the disabled. (They do not apply
to private homes that rent fewer than ve rooms.) To ensure that people in
wheelchairs can reach and adjust the setpoint without assistance, ADA rules
specify thermostat placement to be no higher than 48 inches (121 cm) above the
floor (assuming no other obstructions are below it).
BEFORE running conduit and installing a thermostat, check the specic details
of any applicable compliance requirements!