My new Dewalt DXH75KT torpedo heater. Burning #2 Diesel fuel and mixing 16oz. of 91% Isopropyl Alcohol in 5 gallons of fuel to help it burn cleaner and to cut down on odor from the fuel. I open the garage door about 6 inches to 1 foot for fresh air and open the entrance into the garage attic to allow it to vent through the attic and ridge vents on the roof. I got the pressure gauge so I know it's running the proper fuel pressure of 4.2 psi to keep it burning clean and keep the flame inside the combustion chamber. When it's cold & first fired up it runs a little high on pressure until it warms up a little. So far it hasn't set off my Carbon Monoxide Alarm and PPM readout still shows zero.
The first burn in was done outside to not only verify it worked properly but also to allow it to reach & maintain operating temp and adjust the fuel pressure for Diesel fuel. The pressure was set cold (immediately after ignition), then let it get hot and reset to proper pressure.
This heater gives you several different options of the fuel you can use. K1 kerosene, K2 kerosene, #1 Diesel, #2 Diesel, #1 Fuel Oil, #2 Fuel Oil, or, JP8 Jet Fuel.
Many people use K1 kerosene in their heaters. I use #2 Diesel due to cost, also because it's readily available.
Photo with gauge at 0 psi taken prior to turning on. Photo with cone still gray taken just after ignition. Photo with cone red taken just minutes after ignition. Photo of gauge above 0 was taken last & at 4.2psi..It heats a 875 sq.ft. 2 car garage very well I might add..