Autocad Mep 2009

AutoCAD MEP 2009

Mechanical Tutorial

April 2008

©

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Contents

Chapter 1

Starting An HVAC Drawing . . . . . . . . . . . . . . . . . . . . . 1 Using This Tutorial . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Lesson 1: Starting a Drawing . . . . . . . . . . . . . . . . . . . . . . . . 4 Exercise 1: Specifying a Project . . . . . . . . . . . . . . . . . . . . 4 Exercise 2: Creating a Drawing Based on a Template . . . . . . . . 8 Exercise 3: Viewing Configuration Settings . . . . . . . . . . . . . 11 Exercise 4: Inserting a Reference Drawing . . . . . . . . . . . . . 14 Lesson 2: Determining Loads and Air Flows . . . . . . . . . . . . . . . 16 Exercise 1: Creating Space Styles . . . . . . . . . . . . . . . . . . 16 Exercise 2: Modeling Spaces . . . . . . . . . . . . . . . . . . . . . 22 Exercise 3: Adding Zones . . . . . . . . . . . . . . . . . . . . . . 27 Exercise 4: Exporting and Importing gbXML Data . . . . . . . . . 31

Chapter 2

Drawing a Duct System . . . . . . . . . . . . . . . . . . . . . . 35 Lesson 3: Drawing a Supply Duct System - Lab Support Exercise 1: Adding Equipment . . . . . . . . . . Exercise 2: Drawing 1-Line Duct . . . . . . . . . Exercise 3: Sizing Duct . . . . . . . . . . . . . . Lesson 4: Drawing a Supply Duct System - Lab Zone . . Exercise 1: Drawing Sized Duct . . . . . . . . . . Exercise 2: Adding Sidewall Grilles . . . . . . . . Exercise 3: Modifying the Duct System . . . . . . Exercise 4: Annotating Duct Systems . . . . . . .

Zone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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. 35 . 35 . 45 . 58 . 67 . 67 . 73 . 77 . 80

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Exercise 5: Tagging Equipment . . . . . . . . . . . . . . . . . . . 82

vi | Contents

Starting An HVAC Drawing

1

In this tutorial, you learn how to create part of a heating, ventilation, and air conditioning (HVAC) system for a research laboratory. In the process, you learn the primary concepts of how to use AutoCAD® MEP 2009 to draw HVAC systems and produce construction documents. In this lesson, you learn how to use project tools to start a drawing. You also learn how to use AutoCAD MEP features to evaluate a floor plan for heating and cooling loads.

Using This Tutorial This tutorial is divided into lessons, each of which addresses a particular task. Each lesson contains step-by-step exercises you can perform to achieve the goal of the lesson. Drawings, referred to as datasets, are included in the project files. You must extract the project files in order to complete any part of this tutorial. You can complete the tutorial from beginning to end or, if you are an experienced user, you can proceed to a specific lesson. The lessons in this tutorial are designed to build upon your knowledge of AutoCAD®. If you are not familiar with basic AutoCAD functions and commands, see the online AutoCAD® Help. These lessons also assume you are familiar with basic AutoCAD MEP features such as tool palettes, the Properties palette, and MEP snaps. If you are not familiar with these features, see “Getting Started” in the AutoCAD MEP Help.

Extracting the Project Datasets You must extract the project files in order to complete any part of this tutorial. If you edit any of the project files, you can extract the files again to reset the

1

project to its original state. You can search My Documents\Autodesk\MyProjects to see if the Research Laboratory dataset has already been extracted. NOTE This tutorial references Windows XP file paths. If you are running Windows Vista, they may be different. To extract the project datasets, go to http://www.autodesk.com/autocadmep-tutorials. Locate the tutorial ZIP file for your language; for example, the English language version of the tutorial files is english_tutorials_AutoCAD_MEP_2009.zip. Follow the steps in the corresponding readme.txt file to download the ZIP file and extract its contents to your hard drive.

Working with Metric Content This tutorial requires that the Global content pack be installed as part of the AutoCAD MEP installation for your workstation. The Global content pack is made up of metric content, metric templates, and an AutoCAD MEP (Global) user profile. While you may be accustomed to using imperial units in your day-to-day work, the lessons in this tutorial cover all of the same tasks necessary for you to complete designs and create construction documents using either metric or imperial units.

Verifying the Current Profile In order to complete the tutorial, you must have your current profile set to AutoCAD MEP (Global). To check the profile setting, in AutoCAD MEP click

2 | Chapter 1 Starting An HVAC Drawing

Format menu ➤ Options. The name of the current profile is indicated at the top of the Options dialog.

If AutoCAD MEP (Global) is not the current profile, select it from the list and click Set Current. If AutoCAD MEP (Global) is not listed as a choice in the Options dialog, this means that the Global content pack was not installed when AutoCAD MEP was installed on your workstation. To add the Global content pack to your AutoCAD MEP installation at any time, rerun the installer, and select the Add or Remove Features option. To rerun the installer, open the Add or Remove Programs dialog in the Control Panel, and click Change/Remove. For more information, refer to the online AutoCAD MEP installation guides. If you installed a shortcut for the Global profile, double-click the shortcut to launch AutoCAD MEP with the Global profile set as current.

Using This Tutorial | 3

Lesson 1: Starting a Drawing In this lesson, you learn how to configure a project and use Project Navigator to start a drawing. You also learn how to reference a floor plan drawing in a current drawing.

Exercise 1: Specifying a Project First, you specify a project using the Project Browser. Then, you use Project Navigator to create directories for the AutoCAD MEP drawings. Specify the current project 1 On the Workspaces toolbar, select HVAC.

2 Open the Project Browser using one of the following methods: ■

On the Navigation toolbar, click Project Browser

■

Click File menu ➤ Project Browser.

.

3 In the lower-left corner of the Project Browser, click New Project . 4 In the Add Project dialog: ■

For Project Number, enter 1.

■

For Project Name, enter HVAC Sample.

5 Click OK. In the Project Browser, the new project is highlighted to indicate that it is the current project. The right pane contains an HTML

4 | Chapter 1 Starting An HVAC Drawing

page. To facilitate sharing project information, you can create and store HTML pages in the project location.

6 Click Close. The Project Browser is closed, but the project is still active until you change to another project. When you start AutoCAD MEP, the current project is the last one specified before the software was closed. Use Project Navigator In the Project Navigator, the Project tab displays general information about the project.

Exercise 1: Specifying a Project | 5

7 To add a level, click Edit Levels.

8 In the Levels dialog, click Add Level

.

9 To edit values, such as floor elevation or height, click in the field, and enter the desired value.

You assign construct drawings to floors, and then use those floor assignments when creating view drawings. 10 Click OK.

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11 Review the other tabs on the Project Navigator, which are used to manage different types of drawings: ■

Constructs are drawings that model a unique portion of a building system. For example, an HVAC plan for one floor can be a construct. You create constructs of building plans, then reference them onto views and sheets to create construction documents. Because the views reference the constructs, and the sheets reference the views, you only need to modify the construct drawings. Views and sheets are updated either automatically or by regenerating a view.

■

Views comprise one or more constructs that show a specific view of a building. For example, you can create a view of an HVAC plan for an entire floor. You can create general views, detail views, and section/elevation views.

■

Sheets are construction documents or presentation documents that contain fully-annotated views and details. They are generally plotted or published to DWF™.

12 To minimize Project Navigator to make more room for drawing space, click Autohide.

When you move the cursor off Project Navigator, it minimizes so that just the title bar is visible. To open it, move the cursor over the title bar. Create an HVAC constructs directory 13 Click the Constructs tab.

Exercise 1: Specifying a Project | 7

14 Select the Constructs directory, right-click, and click New ➤ Category. 15 Change the name of the new category to HVAC.

In this exercise, you learned how to create a project and use Project Navigator to specify floor levels. You also created a new construct category.

Exercise 2: Creating a Drawing Based on a Template A drawing template contains information such as layer settings, object style definitions, system definitions, and display settings. Template files are specified in the project settings. View the default template for the project 1 In the Project Navigator, click the Project tab. 2 In the Current Project heading, click Edit Project.

8 | Chapter 1 Starting An HVAC Drawing

3 In the Project Properties dialog, expand Templates.

4 Move the cursor over the field next to Common Model/View Template. A tooltip displays the complete file path. This is the default template you use when starting a new construct drawing. 5 Click Cancel. Create a new construct drawing 6 In the Project Navigator, click the Constructs tab. 7 Under Constructs, select HVAC. 8 Right-click, and click New ➤ Construct. 9 In the Add Construct dialog, click in the field for Name, and enter HVAC Sample. 10 Move the cursor over the Drawing Template field to view the full file path. This is the default template specified in the project settings.

Exercise 2: Creating a Drawing Based on a Template | 9

11 Select Level 0 to assign the construct to the ground floor.

12 Click OK. The new construct drawing is added to the HVAC category under Constructs. When you create a new construct drawing, it is not automatically opened in the software. You can open a new drawing from Project Navigator by double-clicking the drawing name. TIP In addition to creating a new drawing from the Constructs tab, you can also add an existing drawing to a project. Open the drawing, right-click the construct category where you want to place it, and click Save Current Dwg as Construct. In this exercise, you learned how to use a template to create a new construct drawing.

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Exercise 3:Viewing Configuration Settings In the Project Navigator, you viewed project settings such as building levels, elevations, and templates. In this exercise, you view other important configuration settings, such as preferences and system definitions. These settings control how your systems look and function in the drawing. Open a new construct drawing 1 In the Project Navigator, on the Constructs tab, expand HVAC. 2 Double-click HVAC Sample to open it. Next, you view layer key settings for objects. Layer keys are used to add layers as you draw systems. You do not need to create layers as you draw. View layer key settings 3 Click Format menu ➤ Layer Management ➤ Layer Key Styles. 4 In the left pane of Style Manager, click Global Descriptive (256 Color) (MEP). 5 In the right pane, click the Keys tab. 6 Scroll to Duct.

Exercise 3:Viewing Configuration Settings | 11

The layer specified is H-Ductwork-G. The template you specified for this drawing, Aecb Model (Global), contains a custom, descriptive layer key system. The first part of the layer name indicates the discipline, the second part indicates the element, and the last part indicates the data type. For the H-Ductwork-G layer name, the H indicates the HVAC, Ductwork indicates the part, and G indicates the data type is graphics. Because this layer standard is descriptive, the element is described rather than assigned a code. Layer keys are configured for parts and systems. When you add a part, you specify a system for it before placing it in the drawing. The layer that the part is placed on is based on the part type and system definition. For example, you draw a duct system. You specify Supply - Low Pressure for the system. The duct segments are placed on the H-Supply-G layer, where Supply indicates supply air duct. TIP Layer keying allows you to efficiently manage layers in your drawing. For example, you can turn off a layer for a specific system, or use filters to turn off specific objects on the layer. 7 Click Cancel. Next, you view system definitions. These settings control the appearance and function of parts in a system. View system definitions 8 Click HVAC menu ➤ HVAC System Definitions. 9 In the left pane of Style Manager, under Duct System Definitions, click Supply. 10 In the right pane, click the Design Rules tab. Note the layer key. When you assign a system to a component, this setting determines its layer and other settings, such as color and linetype. 11 Click the Design Parameters tab. These values are used when calculating duct sizes. Calculation values are defined for the system definition. For example, you can use different calculation values for medium-pressure duct systems and low-pressure duct systems. 12 Click the Rise and Drop tab.

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This tab specifies the rise and drop style used to display vertical directions in the system. 13 Click the Display Properties tab. This tab specifies general display settings for the system components. You can use it to override the display properties for objects. For example, you can turn off contour lines for duct, or add a hatching pattern to visually enhance specific duct parts in the drawing. 14 Click Cancel. Next, you view settings duct preferences. View duct preferences 15 Click HVAC menu. ➤ Duct ➤ Preferences. 16 Click the Routing tab. When you draw duct runs, these settings control layout behavior. 17 Click the Ducts tab. You can use these settings to add labels, such as size, to duct segments as you draw them. 18 Click the Parts tab. These settings are important because they specify which parts are inserted during layout. For example, if you specify a right angle in your layout geometry, the elbow specified here is inserted into your duct run. You can change these default parts at any time. You can specify any part that is included in the current parts catalog. 19 Click the Connections tab. These settings control how new duct runs connect with existing duct objects. They also control how air terminals such as diffusers are connected to a branch duct. For example, if you connect a new run at the midpoint of an existing duct, a takeoff or tee (whichever is specified here) is added to complete the connection. 20 Click Cancel. In this exercise, you viewed important configuration settings for ducts. You viewed system definitions, which control how the ducts display and function, and you viewed duct preferences, which control how ducts behave as you draw them.

Exercise 3:Viewing Configuration Settings | 13

Exercise 4: Inserting a Reference Drawing In this exercise, you insert an architectural floor plan as a reference drawing. Reference drawings are also referred to as xrefs (external references) in the software. Add an external reference 1 Verify that HVAC Sample is the current drawing. If not, double-click it on the Constructs tab of the Project Navigator. 2 Open the Project Browser project. Click OK.

and select the Research Laboratory

3 In the Project Navigator, browse to \Constructs\Architectural\Floor Plans. 4 Right-click 2nd Floor, and click Xref Overlay. 5 On the Navigation toolbar, click Zoom Extents

.

The floor plan displays in the drawing window. All elements in the xref floor plan drawing are screened as gray.

When you add an xref drawing, you can attach it or overlay it. For construct drawings, overlays are recommended. If you attach a drawing as an xref, you add all of the reference drawing data to the current drawing. An overlay does not add its drawing data to the current drawing, which can help minimize file sizes. For view drawings, however, it is recommended that you attach xrefs if you want the reference drawing geometry to display on the sheet. It is recommended that you use 0,0,0 for the XYZ insertion coordinates. As you develop construct drawings based on this floor plan, you can xref them into views and other constructs by

14 | Chapter 1 Starting An HVAC Drawing

inserting them at 0,0,0. This maintains accurate locations for each subsequent system designed around the floor plan. NOTE When you are working with a Drawing Management project, add an xref by dragging it from the Constructs tab of the Project Navigator onto the current drawing. Xrefs that are not added in this way are lost when the project is refreshed. When you add an xref by dragging it from the Project Navigator onto a drawing, it is attached instead of overlaid, referenced using its full file path, and placed at the X,Y coordinates of 0,0. Its elevation (Z coordinate value) is also updated to a value relative to the host drawing, and it is determined using the elevations of the levels to which the 2 drawings are assigned. In later lessons, you add duct systems to the west side of the building. Next, you clip the reference drawing to display only the west side in the drawing, making it easier to work on this specific portion of the building. Clip the reference drawing 6 To select the floor plan, place the cursor over any linework, and click. The floor plan is selected. 7 Right-click, and click Clip Xref. 8 On the command line, enter n for New boundary. 9 Enter r to define a rectangular boundary. 10 Click outside the lower-left corner of the building to specify the first point of the rectangular boundary. 11 Move the cursor to the second point as shown, and click to specify the opposite corner.

Exercise 4: Inserting a Reference Drawing | 15

The west side of the floor plan is visible, and the east side has been clipped from view.

12 On the Navigation toolbar, click Zoom Extents

.

13 Close the current drawing, and click No when prompted to save the drawing. In this lesson, you created a project and created a new drawing based on a template. You then viewed settings that affect the construction and appearance of your systems. You also added an architectural floor plan drawing as a reference and clipped it so that you could focus on the portion of the drawing you will be working on. Next, you evaluate the floor plan to determine heating and cooling loads.

Lesson 2: Determining Loads and Air Flows In this lesson, you learn how to model interior spaces for a building plan. You use spaces to model rooms, and then you assign engineering data necessary for determining heating loads, cooling loads, and air flow requirements. You export space data in Green Building XML (gbxml) format that can be used in an external analysis program. You import a gbXML file with analysis results.

Exercise 1: Creating Space Styles In this exercise, you create space styles. Space styles define the room type, or classification, for a space.

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Specify the tutorial project 1 On the Workspaces toolbar, verify that HVAC is the current workspace.

When the HVAC workspace is active, the HVAC menu is available from the menu bar, and the HVAC tool palettes group opens. 2 Open the Project Browser using one of the following methods: ■

On the Navigation bar, click Project Browser

■

Click File menu ➤ Project Browser.

.

If you are prompted to repath, click Yes.

3 In the Project Browser, double-click Research Laboratory to specify it as the current project. If the Research Laboratory is not displayed, browse to My Documents\Autodesk\My Projects. The Windows default location for My Documents is C:\Documents and Settings\\My Documents. If the Research Laboratory project is not in this location, it may not have been extracted. See Extracting the Project Datasets on page 1.

Exercise 1: Creating Space Styles | 17

4 Click Close. Open the dataset drawing 5 On the Project Navigator, click the Constructs tab. 6 Under Constructs, expand HVAC ➤ Lesson 2. 7 Double-click HVAC_L02_E01 to open it. 8 On the Navigation toolbar, click Zoom Extents

.

The current display configuration for the drawing is MEP Design. The ceiling grid displays. Next, you change the display configuration to MEP Basic 2-Line. In this configuration, spaces are visible in top view, and ceiling grids are turned off in top view. Change the display configuration 9 On the application status bar, click MEP Design, and select MEP Basic 2-Line.

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The drawing updates to the current display configuration settings.

TIP MEP Basic 2-Line is a good display configuration to use for fast layout. Hidden lines are not used, so drawing performance is enhanced. For views and sheets, however, you may want to use other display configurations that use hidden lines or display only certain systems as non-screened. Create a space style for the laboratories 10 Click Format menu ➤ Style Manager. 11 In Style Manager, under the current drawing name, expand Architectural Objects ➤ Space Styles. 12 Right-click Space Styles, and click New. 13 Change the name of the new style to Laboratory. You can change the name on the General tab, or by clicking the name twice. Add property sets for lighting and equipment loads per area 14 In the right pane, on the General tab, click Property Sets. 15 In the Edit Property Set Data dialog, click Add Property Sets . 16 In the Add Property Sets dialog, verify that SpaceEngineeringStyles is selected, and click OK.

Exercise 1: Creating Space Styles | 19

Note that the property sets are added to the style and displayed in the Edit Property Set Data dialog.

17 In the Edit Property Set Data dialog: ■

For GbXmlSpaceTypeOverride, select LABORATORYOFFICE.

■

For AreaLightingLoad, enter 20 W/SM.

■

For AreaEquipmentLoad, enter 40 W/SM.

18 Click OK. Specify a classification based on a mechanical standard 19 In the right pane of Style Manager, click the Classifications tab. 20 For Space Occupancy, click

20 | Chapter 1 Starting An HVAC Drawing

.

21 In the Select Classification dialog, expand ASHRAE 62.1 2004 ➤ Educational Facilities, and select Science laboratories. Specifying a classification for a space style assigns the required outside air flow values for that room type based on the applicable standard. The values for all room types are included in the software.

22 Click OK. Create another style for laboratory support rooms 23 In the left pane of Style Manager, right-click Laboratory, and click Copy. 24 Right-click Space Styles, and click Paste. 25 Select Laboratory (2) and change the name to Laboratory Support. 26 Using the same method, configure property sets and a classification for Laboratory Support: ■

For GbXmlSpaceTypeOverride, select OFFICEENCLOSED.

■

For AreaLightingLoad, enter 15 W/SM.

■

For AreaEquipmentLoad, enter 0.2 W/SM.

■

For Classification, specify ASHRAE 62.1 2004 ➤ Offices (ASHRAE 2004) ➤ Office Space (ASHRAE 2004).

27 Click OK to close Style Manager.

Exercise 1: Creating Space Styles | 21

28 Close the drawing, and click No when prompted to save the drawing. In this exercise, you learned how to create space styles. The classification and load settings are used to calculate outside air flow, and lighting and equipment loads. Next, you add spaces to the floor plan.

Exercise 2: Modeling Spaces In this exercise, you generate spaces to model the interior spaces of rooms in the xref. You specify space styles for the appropriate rooms as you add the spaces. Dataset On the Constructs tab of the Project Navigator, double-click HVAC_L02_E02 under Constructs ➤ HVAC ➤ Lesson 2. Generate spaces for labs 1 On the HVAC tool palettes, open the Analysis tool palette.

2 Click the Space tool. 3 On the Design tab on the Properties palette: ■

For Style, select Laboratory.

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■

For Tag, select Aecb_Space_Name_Tag.

■

For Offset Boundary, select By style.

■

For Geometry Type, select Extrusion.

4 In the drawing area, move the cursor over Lab 247. The room perimeter is detected by the space tool.

5 Click inside Lab 247 to add a space.

Exercise 2: Modeling Spaces | 23

6 Press Enter. Generate spaces for lab support 7 Using the same method, add spaces to the following rooms; use the Laboratory Support style for all spaces. ■

Lab Support 221, 222

■

Lab Hood 247

■

Common Space 223 and 224

8 Press Enter. Add names to the spaces 9 Select the space for Lab 247. 10 On the Properties palette, click the Design tab. 11 Under Basic ➤ General, for Name, enter Lab 247. 12 Press Esc to deselect the space. 13 Using the same method, rename each space with its corresponding room name. The lab rooms have open ceilings, so you configure the spaces to match. Change space heights to match the building plan 14 Select the space for Lab 247.

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15 On the Properties palette, click the Design tab and scroll to Component Dimensions. 16 Specify the following values: ■

For Overall space height, enter 3960 mm.

■

For Ceiling height, enter 3660 mm.

■

For Floor thickness, enter 300 mm.

■

For Ceiling thickness, enter 0.

■

For Height above ceiling, enter 0.

■

For Height below floor, enter 0.

■

For Default surface height, enter 3660 mm.

■

For Justification, select Top of floor.

17 Press Esc to deselect the lab space. Because the other rooms have suspended ceilings, they require different settings. 18 Select the other spaces, and specify the following values: ■

For Overall space height, enter 3960 mm.

Exercise 2: Modeling Spaces | 25

■

For Ceiling height, 2600 mm.

■

For Floor thickness, enter 300 mm.

■

For Ceiling thickness, enter 50 mm.

■

For Height above ceiling, enter 1010 mm.

■

For Height below floor, enter 0.

■

For Default surface height, enter 3660 mm.

■

For Justification, select Top of floor.

19 Press Esc to deselect the lab support spaces. View space engineering data for gbXML export 20 Select the space for Lab 247. 21 On the Properties palette, click the Extended Data tab. Under Classification, note the classification defined for the space style. You can manually specify another room type here if you want to override the style setting. Under Property Sets ➤ SpaceEngineeringObjects, note the property sets. The default lighting and equipment loads are calculated based on room area and the load per area values specified in the space style. You can manually specify values for OutsideAirFlow, LightingLoad, and EquipmentLoad to override these calculated values. If you do not override any values, then the calculated values will be exported when you export the building data to gbXML. At this

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point, you do not need to specify any other information for the gbXML export.

22 Press Esc. 23 Using the same method, review the settings for the lab support space. 24 Click File menu ➤ Close, and click No when prompted to save the drawing. In this exercise, you learned how to generate spaces. You also viewed the engineering data for the spaces, which was calculated using the room area, space classification, and loads defined in the space style. Next, you add zones, and attach spaces to zones.

Exercise 3:Adding Zones In this exercise, you add zones and attach spaces to the zones. You must attach spaces to zones prior to exporting to gbXML. Dataset On the Constructs tab of Project Navigator, double-click Constructs ➤ HVAC ➤ Lesson 2 ➤ HVAC_L02_E03.

Exercise 3:Adding Zones | 27

Add zone markers 1 On the HVAC tool palettes, open the Analysis tool palette.

2 Click the Zone tool. 3 In the drawing area, specify the insertion point for the lab zone marker outside of the floor plan as shown, and press ENTER.

28 | Chapter 1 Starting An HVAC Drawing

4 Specify the insertion point for the lab support zone marker as shown, and press ENTER.

Rename the zone markers 5 Select the first zone marker. 6 On the Properties palette, click the Design tab. 7 Under Basic ➤ General, for Name, enter Lab Zone. 8 Press Esc to deselect the zone marker. 9 Using the same method, rename the second zone as Lab Support Zone. Specify design temperatures for zones 10 Select both zone markers. 11 On the Properties palette, click the Extended Data tab. 12 Click Add Property Sets

.

13 In the Add Property Sets dialog, select ZoneEngineeringObjects, and click OK. 14 With both zone markers still selected, on the Extended Data tab of the Properties palette, for both DesignTempCooling and DesignTempHeating, enter 22 degrees.

Exercise 3:Adding Zones | 29

15 Press Esc to deselect the zone markers. Attach spaces to zones 16 Select the Lab Zone marker. 17 Click the Attach Space or Zone grip.

18 Select the space in Lab 247, and press Enter. Lines connecting the zone to the attached space are displayed. 19 Using the same method, attach the remaining spaces to the Lab Support Zone.

Review space and zone configuration 20 Select one of the zone markers. 21 Right-click, and click Space/Zone Manager. NOTE You can also open the Space/Zone Manager from the Design tab on the Properties palette.

30 | Chapter 1 Starting An HVAC Drawing

22 In the Space/Zone Manager, verify that Show All Zones and Spaces and Show Space Surfaces are selected in the lower-left corner. You can use Space/Zone Manager to review space and zone configuration. You can expand spaces to view surfaces and openings associated with the space.

23 Click OK. 24 Click File menu ➤ Close, and click No when prompted to save the drawing. In this exercise, you learned how to add zone markers and attach spaces to zones. Next, you export the zone and space data using gbXML.

Exercise 4: Exporting and Importing gbXML Data You can use gbXML files in external analysis tools to calculate heating and cooling loads for a building plan. In this exercise, you export space and zone data using gbXML. You import an analyzed gbXML file that includes calculated load and air flow values.

Exercise 4: Exporting and Importing gbXML Data | 31

Dataset On the Constructs tab of Project Navigator, double-click Constructs ➤ HVAC ➤ Lesson 2 ➤ HVAC_L02_E04. Export data to gbXML 1 Click File menu ➤ Export to gbXML. 2 In the gbXML Export dialog: ■

For File name, browse to My Documents\Autodesk\My Projects\Research Laboratory\Constructs\HVAC\Analysis, enter Research_Lab_export.xml, and click Save.

■

For Select Objects, select 2 Zones. The zones are detected by the gbXML Export dialog.

■

For Building type, select Office.

■

For ZIP Code, enter 5-digit postal ZIP code. Some analysis packages use a ZIP code for specifying psychrometric data.

3 Click Start. 4 When the export is complete, click Close. NOTE The export file and the import file with the calculation results must have the same filename, since the filename is referenced in the gbxml file. Importing an analyzed gbXML file 5 Click File menu ➤ Import from gbXML. 6 In the Import gbXML dialog, browse to My Documents\Autodesk\My Projects\Research Laboratory\Constructs\HVAC\Analysis, select HVAC_L02_E04.xml, and click Open. The calculation results are applied to the appropriate spaces and zones as property sets. 7 To view zone calculations, select the Lab Zone marker. 8 On the Properties palette, click the Extended Data tab.

32 | Chapter 1 Starting An HVAC Drawing

The total air flow, cooling load, and heating load for the zone are displayed under Property Sets ➤ ZoneEngineeringCalculatedData.

NOTE Note that the calculated zone data is not optimal. For training purposes, you only analyzed only a portion of the building.

Exercise 4: Exporting and Importing gbXML Data | 33

9 Deselect the zone, select the Lab 247 space, and view the calculated data on the Properties palette.

You can use tags to show calculated airflow values on spaces. You can also use schedules to show calculation results in a table. For more information, see “Using Space and Zone Calculated Data” in the AutoCAD MEP online help. For reference, a completed drawing named Completed_Spaces is included in the project datasets in the Constructs\HVAC\Lesson 2 directory. 10 Click File menu ➤ Close, and click No when prompted to save the drawing. In this lesson, you learned how to use spaces and zones to configure data used for load and airflow calculations. After you modelled and configured spaces, you exported the data in gbXML format. You imported calculation results, and viewed them for spaces and zones. You can use this information when designing HVAC systems.

34 | Chapter 1 Starting An HVAC Drawing

Drawing a Duct System

2

The lessons in this chapter show how to use the features of AutoCAD MEP to draw a duct system.

Lesson 3: Drawing a Supply Duct System - Lab Support Zone In this lesson, you learn how to draw a 1-line duct system and convert it to sized 2-line duct using a duct calculator. You also learn how to modify a duct system.

Exercise 1:Adding Equipment In this exercise, you add ceiling diffusers and VAV boxes for the Lab Support zone. You add flow values to the ceiling diffusers so that you can calculate duct sizes later. Dataset On the Constructs tab of the Project Navigator, double-click HVAC_L03_E01 under Constructs ➤ HVAC ➤ Lesson 3. Set up the drawing 1 On the Workspaces toolbar, verify the current workspace is set to HVAC.

35

In the drawing, the floor plan is referenced, and portions of 2 main supply ducts are also referenced. The oval duct is part of a medium pressure system that supplies a mixture of outside air and return air. The round duct is part of a medium pressure system that supplies 100% outside air to the laboratories.

The current display configuration is MEP Design No Spaces. Ceiling grids are visible in this display configuration. You use the ceiling grid to place diffusers. Add ceiling diffusers 2 Pan and zoom so that Lab Support 221 is centered in the drawing area. TIP An efficient way to navigate the drawing area is to use the scroll wheel on the mouse. Turn the wheel to zoom in or out, hold down the wheel and drag to pan, or double-click the wheel to zoom extents. You can use these features even if a command is active. For more information, see “Pointing Device Buttons” in the online AutoCAD help. 3 On the application status bar, verify that Object Snap is selected. 4 Right-click Object Snap

, and click Settings.

5 In the Drafting Settings dialog, click the Object Snap tab.

36 | Chapter 2 Drawing a Duct System

6 Select Node, and click OK.

7 On the HVAC tool palettes, open the Equipment tool palette.

8 Click the Diffuser tool.

Exercise 1:Adding Equipment | 37

9 On the Part tab in the Add Multi-view Parts dialog, scroll to 600 x 600 mm Square Faced Ceiling Diffuser, and select it. 10 For Part Size Name, select 600 x 600 mm Square Faced Ceiling Diffuser - 250 mm Neck. You do not need to specify elevation. The diffuser will snap to the ceiling grid (2600 mm).

11 Click the Flow tab.

38 | Chapter 2 Drawing a Duct System

12 For Flow (Each Terminal), enter 120.

TIP To minimize the dialog while the command is active, click the pushpin in the upper-right corner. When you move the cursor off the dialog, it minimizes so that just the title bar is visible. To restore it, move the cursor over the title bar. NOTE If you are running Windows Vista, the pushpin is not available. 13 In the drawing area, specify the insertion point in the location shown. Note the node snap displays at the ceiling grid intersections.

Exercise 1:Adding Equipment | 39

14 Use the compass to rotate the diffuser 90 degrees as shown, and click to complete the part insertion.

15 With the Add MvPart command still active, specify the insertion point for the second diffuser in the location shown.

16 Use the compass to rotate it 90 degrees, and click to add the diffuser.

40 | Chapter 2 Drawing a Duct System

17 Press Enter to end the command.

18 Select one of the ceiling diffusers. 19 Right-click, and click Add Selected. The Add Multi-View Part dialog displays, and it is configured with the settings for the selected diffuser. 20 Add ceiling diffusers to Lab Support 222, Common Space 223, and Common Space 224 as shown. If you insert a diffuser in the wrong location, you can select it, right-click, and use the Basic Modify Tools on the right-click menu to move or rotate the part.

Modify diffuser flow values 21 Select the diffuser in Lab Support 222. Because Lab Support 222 has a small airflow requirement, you change the diffuser from a 250 mm neck to a 200 mm neck. You also specify a lower flow value.

Exercise 1:Adding Equipment | 41

22 Right-click, and click MvPart Modify. 23 In the Multi-view Part Modify dialog, for Part Size Name, select 600 x 600 mm Square Plaque Face Ceiling Diffuser - 200 mm Neck. 24 Click the Flow tab, enter 70 for Flow, and click OK.

Next, you modify the flow for the Common Space diffusers. 25 Select the diffusers (3 total) in Common Space 223 and Common Space 224. 26 Right-click, and click MvPart Modify. 27 In the Multi-view Part Modify dialog, click the Flow tab. 28 Enter 150 for Flow, and click OK. Add VAV boxes 29 On the application status bar, deselect Object Snap your VAV boxes do not snap to the ceiling grid.

so that

30 On the Equipment tool palette, click the VAV Box - Shut-Off tool. 31 In the Add Multi-view Part dialog, for Part Size Name, select 200 mm Shut Off VAV Box.

42 | Chapter 2 Drawing a Duct System

32 For Elevation, enter 3000 mm.

33 In the drawing, specify the insertion point in the upper-left corner of Common Space 223 as shown.

Exercise 1:Adding Equipment | 43

34 Use the compass to rotate the VAV box 90 degrees, and click to insert it.

35 With the command still active, add another VAV box to Common Space 224 in the approximate location shown.

36 On the application status bar, for current display configuration, click MEP Design, and select Mechanical - Duct 2-Line from the list.

44 | Chapter 2 Drawing a Duct System

The ceiling grid is turned off to improve visibility for drawing duct.

37 Click File menu ➤ Close, and click No when prompted to save the drawing. In this exercise, you placed equipment for a duct system. Next, you connect the equipment with 1-line duct.

Exercise 2: Drawing 1-Line Duct In this exercise, you draw 1-line ducts to connect the main supply duct to the VAV boxes. You also connect the diffusers to the VAV boxes. Although 1-line duct has an unspecified size and shape, and you can convert it to sized 2-line duct. Dataset On the Constructs tab of the Project Navigator, double-click Constructs ➤ HVAC ➤ Lesson 3 ➤ HVAC_L03_E02. Add duct from the main supply to VAV boxes 1 You specify duct and drawing settings to help draw duct more efficiently. On the application status bar, for current display configuration, click MEP Design, and select Mechanical - Duct 1-Line from the list. 2 Click HVAC menu ➤ Duct ➤ Preferences. 3 In the Duct Layout Preferences dialog, click the Connections tab: ■

Under Connect with Duct, verify that Use Takeoff is selected.

Exercise 2: Drawing 1-Line Duct | 45

■

Under Terminal-Duct Connection, select Flexible.

4 Click OK. 5 On the application status bar, select Ortho Mode

an d Object

Snap Tracking . Ortho Mode restricts ducts to horizontal or vertical orientation as you draw. Using object tracking, you can line up ducts with other objects in the drawing. 6 Right-click Object Snap

, and click Settings.

7 In the Drafting Settings dialog, click the Object Snap tab and scroll down to AutoCAD MEP. Using AutoCAD MEP snaps, you can snap to AutoCAD MEP objects; you will use them extensively when drawing the duct systems in this tutorial. 8 Verify that Duct Curve and Duct Connector are selected, and click OK.

9 Make sure Object Snap

46 | Chapter 2 Drawing a Duct System

is selected.

10 On the HVAC tool palettes, open the Duct tool palette. 11 Scroll to By Shape, and click the 1-Line tool. 12 In the Add Ducts dialog: ■

For System, select Supply - Medium Pressure.

■

For Elevation, enter 3150 mm.

13 In the drawing area, move the cursor over the 1-line takeoff on the vertical supply duct as shown. A duct end connector snap displays.

14 Click to start the duct run, and click to specify the next point in the location shown below. You do not need to match the

Exercise 2: Drawing 1-Line Duct | 47

dimensions shown; you only need to approximate the layout location.

15 Click to specify the next point in the approximate location shown.

16 Before specifying the next point, move the cursor over the VAV box to display the duct end connector snap. Move the cursor horizontally away from the VAV box, and note the tracking line.

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Specify the next point on the tracking line so that the duct endpoint is aligned with the center of the VAV box.

17 Specify the last point on the duct end connector snap of the VAV box as shown.

18 Press Enter to accept the connection.

Exercise 2: Drawing 1-Line Duct | 49

19 With the command still active, move the cursor over the top end of the second VAV box to display a duct end connector snap as shown.

20 Click the snap, and draw a right-angle run to the other 1-line duct as shown. Click the duct curve connector snap.

21 The software automatically generates routing solutions to connect the VAV box to the duct.

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22 On the command line, enter n to preview the next routing solution. Repeat until you see a 90-degree joint previewed, and enter a to accept that routing solution.

23 Press Enter to end the command. Add duct from VAV boxes to diffusers You hide the floor plan so that you can preview routing solutions in 3D. 24 Select any part of the floor plan, right-click, and click Isolate Objects ➤ Hide Objects. 25 On the Duct tool palette, click the 1-Line tool. 26 In the Add Ducts dialog: ■

For System, select Supply - Low Pressure.

■

For Elevation, enter 3150 mm.

27 Select the end snap on the VAV box outlet, and use tracking to align the end of the duct with the diffuser as shown.

Exercise 2: Drawing 1-Line Duct | 51

28 Click to specify the next point just before the diffuser.

29 Click to specify the last point on the end snap of the diffuser.

Flexible duct is inserted from the point before the diffuser to the end snap of the diffuser. 30 On the command line, enter a to accept the routing solution.

52 | Chapter 2 Drawing a Duct System

31 Press Enter to end the command.

32 On the Duct tool palette, click the 1-Line tool. Verify that System is Supply - Low Pressure, and elevation is 3150 mm. 33 Move the cursor over the approximate location on the duct as shown, and click the curve snap.

Exercise 2: Drawing 1-Line Duct | 53

34 Click to specify the next point as shown.

35 Click to specify the next point just before the diffuser.

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36 Move the cursor directly to the diffuser as shown, and click the end snap.

37 On the command line, enter a to accept that routing solution.

Exercise 2: Drawing 1-Line Duct | 55

38 With the command still active, using the same method, connect the other diffuser as shown.

39 Press Enter to end the command. 40 Pan and zoom to display the other VAV box and diffusers. 41 Select the VAV box. 42 Click the Add Duct grip on the outlet.

43 In the Add Ducts dialog, verify that System is Supply - Low Pressure, and elevation is 3150 mm.

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44 Use tracking and routing solutions to add duct from the VAV box to the diffuser as shown.

45 Press Enter to end the command. 46 Select the next diffuser to the right, and click the Add Duct grip. 47 Move the cursor to the duct, and click the curve snap.

48 Press Enter to accept the connection. 49 Using the same method, connect the other diffuser to the duct. When completed, your system should look similar to the one shown.

Exercise 2: Drawing 1-Line Duct | 57

50 To show the floor plan, right-click anywhere in the drawing, and click Isolate Objects ➤ End Object Isolation. 51 Click File menu ➤ Close, and click No when prompted to save the drawing. In this exercise, you connected equipment with a 1-line duct system. Next, you use a duct size calculator in the software to convert the 1-line duct to sized 2-line duct.

Exercise 3: Sizing Duct In this exercise, you use a duct size calculator in the software to convert 1-line duct to sized 2-line duct. You also modify the ducts to change sizes, add transitions, and move locations. Dataset On the Constructs tab of the Project Navigator, double-click Constructs ➤ HVAC ➤ Lesson 3 ➤ HVAC_L03_E03. Check connectivity 1 Select the duct connected to the main supply duct. Prior to calculating duct sizes, check connectivity to ensure all ducts and equipment are connected. If parts are not connected, they are not considered when calculating sizes.

2 Right-click, and click Connected Objects ➤ Show Connected Run.

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All ducts and equipment are highlighted to show that the system is connected.

3 Press Enter. 4 Select the same duct again, right-click, and click Calculate Duct System Sizes.

Exercise 3: Sizing Duct | 59

5 In the Duct System Size Calculator dialog, configure the settings in sections 1, 2, and 3 as shown.

NOTE The calculation parameters are specified in the duct system definition in Style Manager. Because there are 2 system definitions used in this system (low pressure and medium pressure), the calculation parameters for each system are applied to the appropriate parts of the system being sized. 6 In section 4, click Start. 7 If prompted by the Save to Xref dialog, click Yes. 8 When the duct calculations are complete, click Close.

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Note that all 1-line duct has been converted to 2-line duct with the calculated dimensions.

Move transitions to see associative movement 9 Pan and zoom to Common Space 224. Next, you move transitions to more appropriate locations. You can use associative movement to move parts of the duct system without breaking connectivity. 10 Select the transition just before the elbow in the location shown below, click its top location grip, and move it straight up to just below the takeoff as shown.

Exercise 3: Sizing Duct | 61

A duct segment is automatically added to connect the elbow with the transition. 11 Press Esc to deselect the transition.

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12 Using the same method, move the other 2 transitions to the locations shown.

Exercise 3: Sizing Duct | 63

Move VAV box to see associative movement for equipment 13 Select the VAV box in Common Space 223, and move it straight up as shown.

14 Click to place it close to the wall as shown, and press Esc to deselect it. Note how the runouts stretch to the new location without breaking connectivity.

Modify runout diameters 15 Pan and zoom to Common Space 224, and select the duct shown.

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The duct sizes calculated for the runouts do not match the neck diameters on the diffusers.

16 Right-click, and click Duct Modify. 17 In the Modify Duct dialog, change Diameter to 250 mm, and click OK. 18 When prompted by the Maintain Connection dialog, select Modify to next junction/transition, and click OK. 19 If prompted by the Custom Size dialog, click Yes.

Exercise 3: Sizing Duct | 65

The runout is resized.

20 Using the same method, resize all runouts to match diffuser neck diameter. All diffuser necks are 250 mm except for the diffuser in Lab Support 222, which is 200 mm.

21 Click File menu ➤ Close, and click No when prompted to save the drawing. In this exercise, you calculated and sized the duct system. You used associative movement on transitions and equipment, and you modified duct sizes. Next, you complete this duct system by connecting flexible duct to the diffusers.

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Lesson 4: Drawing a Supply Duct System - Lab Zone In this lesson, you learn how to draw and modify sized duct by creating a duct system for the Lab zone. You also annotate both duct systems, and you tag equipment for scheduling.

Exercise 1: Drawing Sized Duct In this exercise, you draw sized duct, and connect it to a main supply duct. Dataset On the Constructs tab of the Project Navigator, double-click Constructs ➤ HVAC ➤ Lesson 4 ➤ HVAC_L04_E01. Add a VAV box 1 Pan and zoom to the area outside of the Lab Support 228 room. 2 On the Equipment tool palette, click the VAV Box - Shut-Off tool. 3 In the Add Multi-view Parts dialog, for Part Size Name, select 300 mm Shut Off VAV Box. 4 For elevation, enter 2900 mm.

Lesson 4: Drawing a Supply Duct System - Lab Zone | 67

5 Place the VAV box in the approximate location shown, and use the compass to rotate it 90 degrees so that its outlet is facing into Lab 247. Click to insert it.

6 Press Enter to end the command. Add duct to Lab 247 7 Select the VAV box, and click the Add Duct grip on the outlet.

8 In the Add Ducts dialog: ■

For System, select Supply - Low Pressure.

■

For Shape, select Round.

■

For Connection Type, select Slip Joint.

■

For Diameter, enter 500 mm.

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9 Pan and zoom so that you can see Lab 247, and specify the endpoint for the duct just before it reaches the wall, as shown.

10 Press Enter to end the command. 11 To finish this duct, you add an end cap to the open end. Open the Fitting tool palette, and click the Endcap tool. 12 In the Add Duct Fittings dialog, expand Round ➤ Endcaps, and select DW144 Round Duct Endcap.

Exercise 1: Drawing Sized Duct | 69

13 For Part Size Name, select 500 mm Diameter DW144 Round Duct Endcap.

14 In the drawing area, pan and zoom to the end of the duct. 15 Click the duct end connector snap to place the endcap, and press Enter twice.

Connect VAV box to main supply duct 16 Pan so that you can see the VAV box and the main supply duct. 17 Select the VAV box, and click the Add Duct grip on the inlet end. 18 In the Add Duct dialog, verify that System is Supply - Medium Pressure, and Diameter is 300 mm.

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19 Lay out the first part of the run as shown.

20 After you specify a point inside Lab Support 227 as shown, move the cursor to the supply duct, and click the end snap.

Exercise 1: Drawing Sized Duct | 71

21 Preview the routing solutions, and accept the one with 45-degree angles for both joints.

Note that, because the main supply duct fitting is at a different elevation than the duct run, the software automatically rotated the 45-degree elbows to connect parts at different elevations. Front view with all other objects hidden

22 Click File menu ➤ Close, and click No when prompted to save the drawing. In this exercise, you added 2-line duct, and connected to the main supply duct. Next, you add grilles to the duct in Lab 247.

72 | Chapter 2 Drawing a Duct System

Exercise 2:Adding Sidewall Grilles In this exercise, you add sidewall grilles to the duct servicing Lab 247. Dataset On the Constructs tab of the Project Navigator, double-click Constructs ➤ HVAC ➤ Lesson 4 ➤ HVAC_L04_E02. Add a grille 1 Open the Equipment tool palette, and click the Air Terminal Grille tool. 2 In the Add Multi-view Parts dialog, select Sidewall Grilles. 3 For Part Size Name, select 300 x 100 mm Sidewall Grille. 4 For elevation, enter 3150 mm.

Exercise 2:Adding Sidewall Grilles | 73

5 Click the Flow tab, and for Flow (Each Terminal), enter 100 l/s.

6 In the drawing area, click to place the grille just below the duct as shown.

7 Press Enter to end the command.

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8 Select the grille, click the Add Duct grip, and move the cursor to the main duct to display a curve snap.

9 Click the curve snap to connect the grille to the duct branch. Press Enter to end the command.

The takeoff is oriented in the wrong direction. 10 Select the takeoff to activate the grips.

Exercise 2:Adding Sidewall Grilles | 75

11 Click the flip grip (blue arrow) to orient the takeoff properly, and press Esc to deselect the part. The takeoff should be positioned as shown.

Use the array command to add more grilles 12 Select the takeoff, the grille, and the duct between them. 13 Right-click, and click Basic Modify Tools ➤ Array. 14 In the Array dialog, specify the settings as shown, and click Preview.

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15 Click Accept.

16 To check connectivity between the new grilles and the duct, select the duct, right-click, and click Connected Objects ➤ Show Connected Run. The arrayed grilles are connected.

17 Press Enter. 18 Click File menu ➤ Close, and click No when prompted to save the drawing. In this exercise, you added grilles to the duct. You used the array command to add multiple instances of the same grille. Next, you add transitions to the branch duct.

Exercise 3: Modifying the Duct System In this exercise, you break the branch duct so that you can reduce the run, and you resize the duct from the main supply to the VAV box. Dataset On the Constructs tab of the Project Navigator, double-click Constructs ➤ HVAC ➤ Lesson 4 ➤ HVAC_L04_E03. Break the branch duct 1 Pan and zoom to view the branch duct in Lab 247. 2 On the command line, enter break.

Exercise 3: Modifying the Duct System | 77

3 Click once just beyond the fifth grille as shown.

4 On the command line, enter @ to specify the second break point in the same place as the first.

5 To resize the duct downstream from the break, select the downstream duct. 6 Right-click, and click Duct Modify. 7 In the Modify Duct dialog, note the downstream grille airflows detected in the Capacity field. To calculate the duct diameter based on this capacity, click the Calculate Size button next to the Diameter field. 8 Click OK. 9 When prompted by the Maintain Connection dialog, select Modify to maintain connection to next part, and click OK.

10 Using the same method, add another break just beyond the eighth grille, and resize the duct using the instant duct size calculator.

Resize VAV box supply duct 11 Pan and zoom to the duct between the main supply duct and the VAV box.

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12 Select the duct shown.

13 Right-click, and click Duct Modify. 14 In the Modify Duct dialog, for Diameter, enter 630 mm. This is the size of the main supply fitting. Click OK. 15 When prompted by the Maintain Connection dialog, select Modify to maintain connection to next part. For this joint, a transition will be added so that the elbow diameter remains the same. Click OK. 16 When prompted by the Maintain Connection dialog for the other end, select Modify to next junction/transition, and click OK. This resizes the duct all the way to the main supply fitting.

17 Click File menu ➤ Close, and click No when prompted to save the drawing. In this exercise, you learned how to modify duct by adding breaks and calculating duct sizes. This completes the duct system design. Next, you annotate the duct systems.

Exercise 3: Modifying the Duct System | 79

Exercise 4:Annotating Duct Systems In this exercise, you add duct size labels to ducts. You also add flow arrow symbols to the grilles. Dataset On the Constructs tab of the Project Navigator, double-click Construct ➤ HVACs ➤ Lesson 4 ➤ HVAC_L04_E04. Add labels to ducts 1 Pan and zoom to the Lab Support zone. 2 Open the Annotation tool palette, and click the Add Label tool. 3 On the Design tab of the Properties palette: ■

For Style, select Standard.

■

For Layout Method, select One by one.

4 On the Properties palette, click Select Objects 5 Select the ducts shown as shown.

6 Press Enter.

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.

7 Specify the location on the duct for each label.

8 With the command still active, pan and zoom to the Lab zone. 9 Add labels to the ducts as shown, and then press Enter to end the command.

10 Press Enter to end the command. Add custom flow arrows 11 On the command line, enter symboladd. 12 In the Properties palette, click the Design tab. 13 For Style, click the style name. ■

In the Select a style dialog, for Drawing file, select .

■

Select Arrow - Supply.

■

Click OK.

14 In the drawing area, pan and zoom to the first grille on the right.

Exercise 4:Annotating Duct Systems | 81

15 Use tracking to align the endpoint of the arrow with the duct end snap on the grille, and click to place the arrow as shown.

16 Enter 270 for rotation angle, and press Enter twice.

17 Use the array command to add arrows to the rest of the grilles. Use the same settings you used in Exercise 2 for the grilles.

18 Click File menu ➤ Close, and click No when prompted to save the drawing. In this exercise, you added annotation to the duct systems. Next, you tag equipment for scheduling.

Exercise 5:Tagging Equipment In this exercise, you add tags to the sidewall grilles. This adds property sets to the grilles. You can specify property set values, and use them in schedules. Dataset On the Constructs tab of the Project Navigator, double-click Constructs ➤ HVAC ➤ Lesson 4 ➤ HVAC_L04_E05.

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Create a new tag tool 1 You make a copy of the tag tool. On the HVAC tool palettes group, open the Tag and Schedule tool palette. 2 Right-click the Air Terminal 1 tool, and click Copy. 3 Right-click in the tool palette, and click Paste. 4 Scroll to the bottom of the list where the new tag tool was pasted. Right-click the new tag tool, and click Rename. 5 Enter Tutorial Air Terminal for the name of the new tag tool. Modify the new tag tool Next, change the tag tool properties to a tag style that only displays a tag ID and airflow value. 6 Open the Tag and Schedule tool palette. 7 Right-click the Tutorial Air Terminal tool, and click Properties. 8 In the Tool Properties dialog, under Tag, for Tag name, select Aecb_Mechanical_Air_Terminal_Device_III_Tag.

9 Click OK.

Exercise 5:Tagging Equipment | 83

10 On the Tag and Schedule tool palette, click the Tutorial Air Terminal tag tool. 11 Pan and zoom to the first sidewall grille on the right, and select it. 12 Specify the tag location as shown.

13 In the Edit Property Set Data dialog, click OK. You will edit property sets after you place the tags. 14 On the command line, enter m to tag multiple objects. 15 Select the rest of the grilles, and press Enter. You can pan and zoom to select the grilles without exiting the command. 16 In the Edit Property Set Data dialog, click OK. Press Enter. Select the tags so that you can edit the property set values. 17 Select a tag, right-click, and click Select Similar. 18 On the Properties palette, click the Extended Data tab.

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19 Specify the property set values as shown.

20 Scroll to Property Sets From Referenced Style, and click Edit.

21 In the Edit Referenced Property Set Data, specify the settings as shown.

Exercise 5:Tagging Equipment | 85

These values are used in the diffuser schedule.

22 Click OK.

23 On the Tag and Schedule tool palette, right-click the Tutorial Air Terminal tool and click Delete. Prepare construct for view drawings 24 Check to make sure that the Automatically add scales to annotative objects when the annotation scale changes icon is enabled

.

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25 On the application bar, select 1:25 for the Annotation Scale.

The labels scale accordingly. 26 Change the annotation scale back to 1:100. Now the annotation will be visible in the plan views (scaled 1:100) and detailed views (scaled 1:25). 27 Click File menu ➤ Close, and click No when prompted to save the drawing. For reference, a completed drawing (Completed_HVAC_Plan) is included in the Constructs\HVAC\Lesson 4 directory of the project dataset. In this lesson, you learned how to draw sized duct. You added grilles by using the array command. You modified duct using the instant duct sizing calculator. You also tagged equipment, and configured property set values that can be used in schedules.

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