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 TM 55-1905-223-24-17
GLOSSARY
SECTION I. ABBREVIATIONS
ac
Alternating current
A/C
Air conditioner
ARTC
Automatic reset thermal cutout
CFM
Cubic feet per minute
CH
Convection (electric space) heater
DB
Dry bulb temperature
DH
Duct heater
EF
Exhaust fan
FLA
Full load amps
HVAC
Heating, ventilation, and air conditioning
MRTC
Manual reset thermal cutout
NC
Normal closed
NO
Normal open
psi
Pounds square inch
psig
Pounds square inch gauge
RH
Relative humidity
SF
Supply fan
S.P.
Static pressure
SR
Stateroom
UH
Unit (electric space) heater
WB
Wet bulb temperature
WC
Water closet
Glossary 1
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