Combustion Appliance Zone (CAZ) Testing Description Guide describing how to conduct combustion appliance zone testing.
Combined Space and Water Heating: Next Steps to Improved Performance Author(s) Bohac Dave, Schoenbauer Ben, Huelman Patrick H Organization(s) University of Minnesota, UMN, NothernSTAR, NSTAR, U.S. Department of Energy, DOE Publication Date July, 2016 Description Report describing combined space- and water-heating (combi) systems using a high-efficiency direct-vent burner.
Integrated Heating and Hot Water with Tankless Gas or Electric Water Heating Description Guide describing installation procedures for combined space and water heating systems.