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39 Cards in this Set

  • Front
  • Back
HVAC
Heating Ventilations and Air Conditioning
BTU
British Thermal Units
Ton of Cooling
The amt of heat required to melt 1 ton of ice over a 24 hour period
CFM
Cubic feet per meter
GPM
Gallons per minute
CH/RM
Chiller or refrigeration machine
CW
Condenser water
CHW
Chilled Water
HW
Hot Water Distribution System
LPS
Low Pressure Steam operates at 15 psi or below
MPS
Medium pressure steam operates from 15 psi-50 psi
HPS
High pressure steam operates over 50 psi
AHU
Air handing unit with chilled water
SCAC
Self contained air conditioning unit; DX system
CRAC
Computer room ac unit
TRAC
Technology room ac unit
DX
Direct Expansion
HP
Heat Pump air conditioner
VAV
Variable air volume
FPB
fan powered box
VFD
Variable frequency drive; electric motor speed controller
FLD/FD
Fusable link damper. Standard fire damper
FSM/FSD
Fire smoke damper. Combination damper with fusable link or heat sensor, and an opposed blade damper activated by teh fire alarm system
ALD
Automatic louver damper
OBD
Opposed Blade damper
VD
Volume Damper
HX
Heat exchanger
PFHX
Plate frame heat exchanger
UH
Unit heater
CH
Cabinet heater
SF
Supply air fan
RF
return air fan
ef
exhaust fan
SA
Supply air
RA
Return air
AD
Access door
WMS
Wire mesh screen
FCU
Fan coil unit
PTAC
Package terminal air conditioner (through the wall unit)