TM-9-2540-207-14-P
HEATER, VEHICULAR COMPARTMENT, MODEL: A20
TECHNICAL MANUAL; OPERATOR, FIELD, AND SUSTAINMENT MAINTENANCE MANUAL INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST
JULY 2007
TM-9-2540-207-14-P - Page 17 of 288
TM 9-2540-207-14&P
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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).
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