TM-9-2540-207-14&P Sustainment Manual for A20 Heater for M113 2540-01-396-2826 Download
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TM 9-2540-207-14&P xv/xvi blank GLOSSARY OF TERMS Ambient Temperature – This is the natural temperature of the environment surrounding the heater and the Vent Air Inlet. BTU/Hr – An acronym for British Thermal Units per Hour, which is a measurement of heat flow. Diagnostic – The process of identifying the cause of a fault by analyzing operating parameters. Microprocessor – An integrated circuit that is used for the purpose of executing software instructions. MS Connector - A five-pin connector used to connect the heater control box to the heater. The connecting cable and control box are parts of the vehicle equipped components. PC Board – An electronic printed circuit board that can control power and logic, Vent Fan, Burner Fan, or Diagnostic Display. PSI – An acronym for Pounds per Square Inch, which is a measurement of pressure. SCFM – An acronym for Standard Cubic Feet per Minute, which is a measurement of airflow. Standard means that the air density has been corrected to standard pressure and temperature. USG/Hr – An Acronym for United States Gallons per Hour, which is a measurement of liquid (fuel) flow. Watts - A measure of electrical power, which is calculated as the product of Voltage and Electrical Current (V x A).