Precedent 3-25 Ton Electric Heat Sequence
When staged electric heat is configured in the unit, the controller manages two binary outputs to provide two-stages of heat control; depending on size of the electric heat installed. When two-stages of electric heat are installed on a cooling only unit, each stage of electric heat is 50 percent of available Heating Capacity Primary Status. When one-stage of electric heat is installed on a cooling only unit, it is assumed to represent 100 percent of the Heating Capacity Primary Status. When two-stages of electric heat are installed on a heat pump unit, each stage of electric heat is assumed to represent 50 percent of available Heat Secondary Capacity Status. When one-stage of electric heat is installed on a Heat Pump unit, it is assumed to represent 100 percent of the Heat Secondary Capacity Status. If the last stage of compressor heating is energized or compressor(s) lockout is active, electric heat is allowed to stage.
Staging
| Unit Operation | Unit Response |
|---|---|
| Electric Heat Stage 1 | Electric Heat Stage 1 Output ON |
| Electric Heat Stage 2 | Electric Heat Stage 1 and 2 Outputs ON |
Application Guide
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.