Finned Tubular Process Air Heaters
- Elements are .475" diameter, 304 stainless steel. Corrugated fins, 1-1/8" O.D. are the same material.
- Heavy steel or stainless steel flange with pre-drilled mounting holes furnished for 400° F outlet air and higher.
- Multiple concentric knockouts on all sides of the terminal box for convenient conduit entry.
- Stainless steel terminal hardware and 10-32 threaded studs assure reliable connections.
- Removable bus bars are secured with stainless steel nuts and shakeproof washers. Terminal box may be side or top mounted.
- Louvered terminal box cover keeps connections and wiring at safe temperatures.
- Individually replaceable elements mounted to the terminal flange with push nuts.
- Optional 4" insulation below mounting flange cuts energy losses through oven walls, keeps electrical connections cool. 1" of insulation in terminal box is standard for 400° and 600° F outlet air.
- 1/2" diameter steel rods tie the assembly together in a rigid, yet expandable, mode.
- Open framework allows universal mounting. Use with horizontal or vertical airflow.
- Pressure connectors welded or bolted to bus bars furnished for field wiring of 8 gauge and heavier.
Special Features
Built-in Controls
(Available for heaters operating up to 150° F outlet air temperature.)
Built-in contactors, fuses, control transformers, and disconnect switches save installation labor and provide single source responsibility for the heater-control package.
Built-in Thermostat
(Available for heaters operating up to 150° F outlet air temperature.)
For automatic control of outlet air temperature. Adjustable over a range of 60-250° F. Outlet temperature will be lower than set point as the thermostat senses heat from elements as well as outlet air. Do not use where outlet air temperature will exceed 150° F. May also be used as an automatic high temperature thermal cutout.
Built-in Combination Thermostat/Thermal Cutout
(Available for heaters operating up to 150° F outlet air temperature.)
Control normally cycles the heater on and off, but shuts the heater down until reset button is pressed if temperature rise is more than 50° F above the control set point. (60-250° F range).
Remote Mounted Thermostats
For air temperature control or high temperature thermal cutout protection, a bulb and capillary type thermostat can be mounted in a cool location up to 8' away from the heater. A well is provided to mount the thermostat bulb into the airstream.
Built-in Thermocouple
Built-in sheathed thermocouple available for high temperature limit. This can be mounted in the airstream or clamped to a tubular/finned tubular element to prevent overheating.
