When field-installed smoke detectors, time clocks, or other control devices are used to shut down the HVAC unit if a problem occurs, the wiring connections should be as shown below. A dry set of normally closed contacts, can be used to break the 24 Volt AC power circuit from the RTRM. Removing the brass jumper clip between LTB terminals, 5 and 6, and applying the normally closed contacts of the shutdown device to these terminals. A unit shutdown will occur immediately when the contacts open.
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.