Janitrol heater

[JeffAxel]

Originally Posted by skymstr02

I believe that this should read 2.25 GAL/hr. A similiar heater in other types of aircraft (Cessa 310's, 402's, Piper Seneca, Aztec, Navajo, etc) typically burn just over 2 gallons per hour.

This is the service bulletin that describes the changes to the basic installed heaters:
http://www.kellyaerospace.com/servic...-101_Rev_D.pdf

Just quoting the POH on the 2.25lbs/hr. FWIW, the C&D Associates heater I replaced the Janitrol with burns 1.5gph, max according to its Operating handbook. The heaters in 337's are 25K BTU, the larger planes might have bigger heaters, and higher fuel burn rates.