These duct heaters are not intended for installation in series in the air.
Electric duct heater installation.
Installation instructions 47 66kb download document tubular element heaters.
Installation instructions 47 66kb download document thermo air.
Warren technology produces custom built electric duct heaters for installation in commercial hvac systems.
The heater must always be interlocked with the fan.
Warren heaters are engineered for reliability and safety and are specifically designed not to exceed safe operating temperatures.
Rh series electric duct heaters installation operation and maintenance manual.
Instruction manual 66 13kb download document.
2 1 800 627 4499 accessory rh series electric duct heaters warning avertissement arclash and electric shock hazard all models of electric heaters as discussed in this 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.
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.