Warren technology produces custom built electric duct heaters for installation in commercial hvac systems.
Electric duct heater installation.
Rh series electric duct heaters installation operation and maintenance manual.
A duct heater must be installed according to the installations instructions wiring diagram and labeling supplied with the heater.
Listed below are some important items when installing an electric duct heater.
Never operate a duct heater without airflow.
Installation instructions 47 66kb download document thermo air.
Sufficient working space must be provided per paragraph 110 26 of the nec.
Warren heaters are engineered for reliability and safety and are specifically designed not to exceed safe operating temperatures.
Instruction manual 66 13kb download document.
Installation instructions 47 66kb download document tubular element heaters.
Duct elbows or turns must be located at least 4 from the inlet of the heater and 2 from the outlet of the heater.
Custom built electric duct heaters are safety tested and listed by underwriters laboratories ul and the canadian standards agency csa and meet national electric code nec requirements.