CTB-500, Waste Oil Furnace, Used Oil Furnace, Furnace, Clean Burn, Model CB-200, 500,000 BTU/hr.


The Clean Burn Model CTB-500 waste oil boiler has an input rating of 500,000 BTU/hr and an output rating of 372,000 BTU/hr. The CTB-500 is UL listed for use in central heating systems. It can be used in combination with any Clean Burn boiler to create a system perfectly sized for any facility.

The CTB-500 is the largest of it’s product line. You spend 30 minutes cleaning every 1000 hours of operation. It is uniquely designed for installation flexibility. Engineered for use as a single boiler unit, or as part of a combination of CTB-500 boilers working as a larger system.


 Three-pass heat exchanger creates more heat efficiency

Low-mass water design provides quick start -up

Patented burner engineered exclusively for waste oil

System is pre-wired, ready for installation

Narrow cabinet designs provide installation flexibility

Unequaled service and support from Clean Burn Distributors

Model CTB-500 Specs.
BTU/hour input: 500,000 / 146.5 kW
BTU/hour output: 372,000 / 109.0 kW
Fuels Used oils: Crankcase,ATF, hydraulic
Fuel oils: #2, #4, and #5 fuel oil
Heating Surface 97 sq. ft. / 9.0 sqM
Boiler water volume 20.6 gal. / 78 L
Design water flow per coil 37 gpm / 140 lpm
Cabinet dimensions 66.38″ L x 40″ W x 42″ H
169cm x 102cm x 107cm
Overall dimensions
(with burner/breach/plumbing)
86.13″ L x 43.5″ W x 47.85″ H
219cm x 111cm x 122cm
Approx. Weight 1600 lbs. / 725.7 kg
Electrical Requirements 115 VAC 60 Hz single phase*
*230V/ 50Hz units also available
Maximum oil consumption 3.57 GPH / 13.5 lph
Stack size 10″ / 25cm
Air compressor required 2.5 CFM @ 25 PSI
4.25 m3/h @ 1.7 bar
Recommended clean-out 1000 hours

*Values indicated above are nominal. Actual values will vary depending on fuel and installation.


CTB-500 User Manual

International Manual

CTB-500 Bid Specs

Contact Us

For general questions, comments, or requests, please fill out the form. For parts/service, please call 1-800-521-5825

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