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Home My WebLink AboutM1.1MECHANICAL ABBREVIATIONS ABV ABOVE GA GAUGE AD ACCESS DOOR GALV GALVANIZED ADJ ADJUSTABLE HC HEATING COIL AF AIR FILTERS LAT LEAVING AIR TEMPERATURE AFF ABOVE FINISHED FLOOR MAT MIXED AIR TEMPERATURE AL ACOUSTICAL LINING MAX MAXIMUM BOD BOTTOM OF DUCT MBH THOUSAND BTU PER HOUR BOJ BOTTOM OF JOIST MIN MINIMUM BTU BRITISH THERMAL UNIT MOD MOTOR OPERATED DAMPER CD CONDENSATE DRAIN MUA MAKE-UP AIR CFM CUBIC FEET PER MINUTE NC NORMALLY CLOSED CLG CEILING NG NATURAL GAS CONC CONCRETE NIC NOT IN CONTRACT CU CONDENSING UNIT NK NECK CUH CABINET UNIT HEATER NO NORMALLY OPEN D DRAIN NTS NOT TO SCALE DB DRY BULB OA OUTDOOR AIR DIFF DIFFUSER OBD OPPOSED BLADE DAMPER DHC DUCT HEATING COIL OPNG OPENING DN DOWN PRV PRESSURE REDUCING VALVE DWG DRAWING PSI(G) POUNDS PER SQUARE INCH (GAUGE) DX DIRECT EXPANSION RA RETURN AIR EA EXHAUST AIR REG REGISTER EAT ENTERING AIR TEMPERATURE RL REFRIGERANT LIQUID ECUH ELECTRIC CABINET UNIT HEATER RS REFRIGERANT SUCTION EDHC ELECTRIC DUCT HEATING COIL RTU ROOF TOP UNIT EF EXHAUST FAN SA SUPPLY AIR - OR - SOUND ATTENUATOR EHC ELECTRIC HEATING COIL SS STAINLESS STEEL EL ELEVATION TEMP TEMPORARY ELEC ELECTRICAL TP TOTAL PRESSURE EUH ELECTRIC UNIT HEATER TYP TYPICAL EXH EXHAUST UH UNIT HEATER FLXCN FLEXIBLE CONNECTION VD VOLUME DAMPER FD FIRE DAMPER WB WET BULB FL FLOOR WC WATER COLUMN FLA FULL LOAD AMPS WMS WIRE MESH SCREEN