1, design and construction instructions;
2, legend, equipment and materials list;
3. plan;
4. Detailed drawing;
5. System diagram;
6. Flowchart;
Second, the design and construction instructions
1, design description;
2. Design overview;
3. Design parameters; Cold and heat sources;
4, cold and hot medium parameters;
5, air conditioning cold and heat load and load index;
6. Total resistance of water system;
7. System form and control method.
Third, the construction instructions:
1, the use of materials such as pipes, valve accessories, thermal insulation, system working pressure and pressure test requirements;
2, building installation requirements and matters needing attention; Pressure test and flushing of pipeline containers;
3. Adopt standard atlas.
4. Legend. The legend lists the graphic symbols or text symbols used in the system in the form of a table, and its purpose is to facilitate readers to read the drawings.
Four. List of equipment and materials
The list of equipment and materials generally lists the specifications, models, quantities and specific requirements of the main equipment and materials of the system.
Verb (short for verb) plan
1, building outline, main axis, axis size, indoor and outdoor ground elevation, room name;
2. The air duct plane is a double-line air duct, and the air conditioning water pipe plane is a single-line water pipe;
3. Mark the specifications, elevations and positioning dimensions of air ducts and water pipes on the floor plan;
4, all kinds of air conditioning, ventilation equipment and its accessories plane position;
5. Quantity of equipment, accessories and risers.
System diagram of intransitive verbs
1, small air conditioning system, when the floor plan is unclear, draw the system diagram, the proportion should be consistent with the floor plan, and draw it according to the 45-degree or 30-degree axonometric drawing;
2, system diagram to draw the equipment, valves, control instruments, accessories, indicating the medium flow direction, pipe diameter and equipment number, pipeline elevation.
Seven, the system schematic diagram:
For large-scale air conditioning systems, the system diagram should draw equipment, valves, control instruments and accessories, and indicate the medium flow direction, pipe diameter, riser and equipment number.
VIII. Details
1. Detailed drawing of ventilation, air conditioning and refrigeration room: draw the outline position and quantity of ventilation, air conditioning and refrigeration equipment, and indicate the distance between the equipment and foundation and the wall or axis; The location of the air duct and water pipe connecting the equipment; Indicate the size, elevation and pipe diameter.
2, ventilation, air conditioning profile: duct or pipeline and equipment intersection complex parts, should draw a plan. Draw the size, elevation, air-water flow direction of air duct, water pipe and equipment, and the size relationship with building beam, slab column and ground.
3. Section view of ventilation, air conditioning and refrigeration machine room: draw the vertical elevation view of equipment and equipment foundation corresponding to the plan of the machine room. Mark the pipe size of the connecting equipment; equipment number
4. Detailed drawings of parts and components, and standard drawings used in construction and installation.
Nine, reading the general procedure of engineering construction drawing
1. Look at the drawing catalogue and title bar. Understand the project name, project content, design date, serial number and drawing number of all drawings of the project, etc.
2. Look at the general design instructions. Understand the general situation of the project and the design basis, and understand all relevant matters that are not clearly expressed in the drawings. Such as cold source, refrigeration capacity, system form, use requirements of pipeline accessories, pipeline laying method and construction requirements, legend symbols, construction precautions, etc.
3. Look at the layout. The sequence of drawing the floor plan is: ground floor → floor → roof → basement → details.
4. Look at the system diagram. The sequence of system diagram or flow chart is as follows:
Cold and heat source → water supply and return pressurization device → water supply supervisor → air treatment equipment → return pipe → water system control accessories → instrument accessories → pipeline elevation.
Cold and heat source → cooling water booster → cooling water supply pipe → cooling tower → cooling water return pipe → instrument accessories → pipeline elevation.
Air inlet of air supply system → booster fan → booster duct → air outlet → duct accessories.
Exhaust system outlet → exhaust fan → exhaust pipe → indoor exhaust port → pipe accessories.
Generally, the system diagram should be read against the floor plan, and it is required to know the system number, pipeline vein, pipe diameter, pipeline elevation and connection of equipment accessories; Number and type of connections of equipment accessories on the riser. Understand the space position of air conditioning pipes in civil engineering and the space needed for building decoration. Count the number of equipment and accessories and the length of pipes on the system diagram as the basis for HVAC project budget and material procurement.
5. Please refer to the installation details. The sequence of detailed drawings is as follows:
Equipment layout → foundation plan → profile → flow chart.
6. Look at the list of equipment and materials. The list of equipment and materials provides the model, specification and quantity of the main equipment and materials used in the project, and is an important reference for compiling the project budget and purchasing the main equipment and materials plan.