How to Build a Gas Burnout Oven
Care needs to be taken with this project but a perfect product will result when the correct elements are used.
Required Materials
- concrete
- sand
- water
- rebar
- fire bricks
- steel welded box with up & down door latched
- flat steel to length
- exhaust duct and fan with motor
- air filters to EPA standard
- heat retardant fabric
- natural gas fired heat unit
- air injector
- steel clips
- oven furniture
- anchor bolts
- thin foundation forms
Required Tools
- welding kit
- wall cutting tools
- level
- shovel
- wheel barrow
- floor jack
- measuring tape
- pencil/paper
Instructions
- Permit Requirements - Before beginning this project, investigate which permits will be necessary for operating a natural gas burnout oven. In the United States, Clean Air Act compliance is necessary. Failure to comply with this act can result in very severe fines and possible jail time.
- Oven Pad Construction - Locate the place where you will place the burnout oven. It should be fairly close to an outside wall, but not too close. Construct a concrete pad 4” deep using foundation forms and rebar. Make sure that the pad is level. Lay out the corners of the oven and place anchor bolt anchors into the pad.
- The Oven Box - In most instances, it is best to have the oven box manufactured off-site. If you choose to construct your own, use heavy gauge steel, paying strict attention to the quality of the weld. Additionally, make sure that tolerances at the door and mechanical void locations are tight. An up-and-down door handle layout is recommended. Cut holes as needed for the thermostat, oven control, oven venting, natural gas heat/air injection system and the automatic oven door open shut-off mechanism. Weld fabric attachment clips at the corners and at 1/3 points along the top edges of the box and the roof section. Using a floor jack, place the oven box onto the concrete pad and bolt it into place.
- Wiring and Gas Heat/Air Unit Installation - The wiring for a project such as this is critical in many respects. Hire a licensed electrician to install and wire all units. These will include the natural gas heat/air injection system, venting fans, shut-off and thermostat units.
- Install Heat Fabric and Bricks - Attach heat resistant fabric to the welded steel clips attached previously. Line the floor as well. Line the floor and walls with heat bricks. Cut the bricks only where needed for equipment. After the final row of bricks is done, lay flat steel across the top for roof bricks.
- Venting - Cut a ventilation hole in the building wall and install vent ducting to the outside. Have an electrician make needed connections.
- Start-Up - Begin a testing program that will slowly bring the natural gas burnout oven up to full temperature. Allow plenty of time for break-in before attempting a full cycle.