Issue:
Zone Sensor Averaging
Resolution:
ReliaTel and Symbio 700
When a large zone is being conditioned, it may not be easy to find one place that provides a good typical room temperature all day long. By using multiple sensors, the average temperature can be sensed and provide operation more acceptable for the zone.
The quantity of sensors in the sensing circuit is extremely important. The quantity must be a "squared" number that allows them to be wired in series-parallel configuration. The resistance of the averaging circuit must duplicate the resistance of a single sensor. The quantities in the averaging circuit will be 4, 9, 16 or etc. A 4 sensor circuit is typical. (Note: Operation with 2 or 3 sensors is not possible).
Space temperature averaging is accomplished by wiring the correct number of sensors as shown. The fewest number of sensors required to accomplish space temperature averaging is four. See note below.
NOTE: A non-programmable sensor can be used as one of the sensors wired in series/parallel with the others. A programmable sensor can not be used as one of the averaging sensors.
WARNING:
Information in this article is intended for use by individuals possessing adequate backgrounds of electrical and mechanical experience and who comply with all federal, state, and local laws, rules, orders, or regulations related to the installation, service, or repair of a heating or central air conditioning product. Any attempt to install, service, or repair a heating or central air conditioning product may result in personal injury and/or property damage. The manufacturer or seller cannot be responsible for the interpretation of the information contained herein, nor can it assume any liability in connection with its use.