What is the return air symbol?
The three most common being supply, return and exhaust. An “X” in a square or round shape is indicative of Supply Air, while a single Diagonal line indicates return air.
What is the symbol for a damper?
This is the most frequently used pedal of the piano. The letters “Ped” provide the directive for the performer to depress the damper pedal and the marking to indicate the release is a flowery looking asterisk symbol.
Where would you look to define symbols on a mechanical plan?
The legend defines architectural symbols and notations on the plan. Many standard symbols appear there for specific projects.
What are fire dampers used for?
The fire damper secures the integrity of the existing barrier thus preventing fire penetration before temperatures reach the fire rating level of the barrier itself. Its primary function is to prevent the passage of fire from one side to the other of a fire-rated separation.
What is a supply diffuser?
What is a Supply Air Diffuser? A supply air diffuser is a diffuser found in a ventilation system whose function is to allow for the flow of air from the outside into the room. This is by allowing air to flow out of the ventilation system into the room.
What is a mechanical return?
Your Return Vents Are Responsible for Air Pressure When your HVAC system blows air into your home, that changes the air pressure inside. The return vent is usually bigger than your supply vents because it’s how the air handler sucks air into the HVAC system.
What does BD mean in HVAC?
HVAC Abbreviations
| A | Air or Compressed Air |
|---|---|
| BHP | Brake Horsepower |
| BI | Backwards Inclined |
| BOD | Bottom of Duct |
| BTU | British Thermal Unit |
What is HVAC plan?
What are HVAC Plans? HVAC (heating, ventilation, and air conditioning) plans refer to the drawings made by specialized engineers that include all the details needed to create, set up, and maintain the heating and cooling system in a building.
What is HVAC drawing?
HVAC drawings are simply technical drawings displaying information concerning cooling and heating of a space. The primary function of HVAC systems is to produce thermal comfort to the users by automatically managing the temperature according to the exterior environmental conditions.
What do the symbols on air ducts mean?
An “X” in a square or round shape is indicative of Supply Air, while a single Diagonal line indicates return air. The following symbols indicate the type of air but also that of a riser duct. A riser duct is one that penetrates a floor.
What does the symbol for air receiver mean?
The symbol for the air receiver is almost recognisably a storage tank: a two-dimensional elongated cylinder. One or more solid lines leading into/out of the tank indicate its intake/output lines. The compressed air distribution system is via connected lines or pipes to operating equipment, or via unconnected lines that cross over.
What are the symbols for a pneumatic air supply?
Pneumatic Air Supply and Distribution Symbols. 1 Compressor. The symbol for a compressor is similar to the air motor symbol. The addition of a diagonal line arrow through the circle indicates 2 Main Air. 3 Receiver. 4 Air Pipes Connected/Not Connected. 5 Manifold.
What do the symbols on a compressor mean?
As a general rule, circles are used for drive items such as motors, pumps and compressors, while squares and rectangles represent actuators, cylinders and valves. The symbol for a compressor is similar to the air motor symbol.