Access the official technical documentation for your Therm Dynamics TD Inferno HD flameless heater. Select your specific engine configuration below—CAT 2.2L 74HP or Koher 2504 74HP—to download the appropriate owner’s manuals, control panel guides, and fault code tables.

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CAT 2.2L 74HP

CAT 2.2L 74HP Owner’s Manual
CAT 2.2L 74HP Control Panel Operation
CAT 2.2L 74HP Fault Code Table

Koher 2504 74HP

Koher 2504 74HP Owner’s Manual
Koher 2504 74HP Control Panel Operation
Koher 2504 74HP Fault Code Table