WattMaster Auto-Zone Plus - Section 1; Table of Contents

Section 1
Design Guide
Table of Contents
Conventions .....................................................................1
General Information.........................................................3
Description of System Components.................................................................................3
Design Considerations.....................................................6
Zone Diversity .................................................................................................................6
Cooling - Partial Load Conditions ...................................................................................6
Heating - Partial Load Conditions ...................................................................................8
Override Conditions.........................................................................................................8
Building Pressurization....................................................................................................8
Design Guide....................................................................9
Step #1 - Zoning ..............................................................................................................9
Step #2 - Sizing the Central Unit ...................................................................................11
Step #3 - Duct Design Considerations...........................................................................11
Step #4 - Room Air Motion/Diffuser Selection.............................................................12
Step #5 - Bypass Damper Sizing ...................................................................................13
Step #6 - Sizing the Zone Damper.................................................................................15
Round Dampers .............................................................................................................17
Rectangular Dampers.....................................................................................................17
Pressure Independent Zone Dampers ............................................................................18
Auxiliary Heat Control Options......................................19
Table of Figures
Figure 1-1: Auto-Zone Plus System ..............................................................................2
Figure 1-2: Control Zones Affected by the Outdoor Load ..........................................10
Figure 1-3: Locating the Static Pressure Sensor for Bypass Damper Control ............14
Figure 1-4: Round Damper Dimensions.......................................................................16
Figure 1-5: Rectangular Damper Dimensions ..............................................................16
Table 1-1: Round Air Damper Selection .....................................................................17
Table 1-2: Rectangular Damper Selection...................................................................17
Table 1-3: Pressure Independent Flow Factors............................................................18
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