60,000-BTU/H, Military Design, Multifuel Space Heater.

This report covers engineering development and testing of a Multifuel Space Heater. Heaters are required to accept two types of standard, Army electrical power 120-volt a.c., 60-Hz, 1-phase and 208-volt a.c., 400-Hz, 3-phase. The heaters will replace performance specification heaters presently produced for use in mobile van and shelter applications. Testing was done to determine design weaknesses or to verify critical performance prior to entering the Development Test II DTII phase. The report concludes that the contract for DTII heaters will require further design effort to effect improvement of the vent blower performance and configuration, the EMI suppression, the noise level attenuation, the low-temperature performance, and the combustion blower motor brush durability. The development should proceed to contract for DTII heaters, followed by DTII tests at the U.S. Army Test and Evaluation Command.