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47 Simple Supply Sizing
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Lern how to size a supply by simply considering three things: flow rate, noise and static pressure. |
132.98 KB |
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48 EAC Polarization vs. Ionization
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The U.S. Environmental Protection Agency reports that indoor air is typically 2-5 times more polluted than outdoor air. |
122.58 KB |
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49 Composition and Properties of Air
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Understanding the basic composition and properties of air is essential to a successful career in the HVAC. |
135.99 KB |
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50 SGV DGV
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The new SGV and DGV stainless steel special gas venting systems were designed to meet the venting needs of high efficiency gas-fired appliances. |
88.49 KB |
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51 Filter Grille Performance
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Filter grille characteristics, sizing guidelines, and filter limitations |
1.01 MB |
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52 Wood vs. Metal Floor Diffuser
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A comparison between wood and metal floor diffusers. Covers general characteristics and performance data. |
1.53 MB |
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53 Vent Offsets
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Describes what the codes consider a vent offset to be and how to determine the lateral length of an offset. |
265.54 KB |
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54 Condensation in B-Vent
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When and how condensation forms, when it will cause problems, and how to prevent it. |
417.71 KB |
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55 Soft-Cone Flashings for B-Vent
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Proper roof penetrations for B-Vent going through corrugated/profiled roof surfaces. |
342.52 KB |
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56 Curved Blade Register Discussion
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Advantages of curved-blade registers in their many styles. |
429.07 KB |
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57 Finding Performance Data for Unlisted Size Registers
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Simple ways of finding performance data when it isn't listed in the tables in the back of the catalog. |
107.96 KB |
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58 Dirt Stains on Diffusers and Adjacent Ceiling Surfaces
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What causes dirt to accumulate on a diffuser and a ceiling and how to prevent this from happening |
487.07 KB |
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59 Airflow Meters
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How to use an airflow meter to determine flow characteristics of a grille, register, or diffuser (GRD) |
165.18 KB |
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60 Flexible Duct Tape and Non-Metallic Clamps
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Covers the materials needed to make proper flex duct connections |
207.47 KB |
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61 Cleaning Chimneys
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Why, when, and how to clean your chimney |
94.23 KB |
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62 Sizing of Flexible Duct
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Compares sizing flex duct to metal duct and explains the differences in sizing the two |
168.81 KB |
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63 Considerations for Sizing a Return
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Covers all of the factors that influence the proper return air grille size |
175.43 KB |
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64 Sidewall Vent Terminations
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Describes and explains the rare instances where it IS permissible to terminate a B-Vent system horizontally |
82.23 KB |
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65 Dimensions of a Grille Register or Diffuser
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Describes the way that GRDs are typically dimensioned |
140.47 KB |
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66 Working with Standards, Codes, and Inspectors
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Explains how our products are subject to the requirements of standards, codes, and inspectors. |
94.55 KB |
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67 Grille Register and Diffuser Substitution
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Contains useful suggestions for substituting one model GRD for another model because of size, performance, or appearance constraints |
123.75 KB |
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68 Alternate sizing of 821 831 92 and HV registers
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Tips and tricks for getting performance data for sizes that aren't listed in the engr. data section of the catalog. |
139.61 KB |
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69 Repainting Grilles Registers and Diffusers
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Guidelines for repainting our GRDs |
74.20 KB |
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70 T-Bar Diffusers with Molded Fiberglass Back Panels
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Characteristics and usage of fiberglass backed diffusers including common uses, collar installation, and more. |
365.35 KB |
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71 Louver Performance and Sizing
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Describes and gives examples of how to determine the proper louver size for any given installation |
105.60 KB |
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72 Sweating of T-Bar Ceiling Diffusers
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Explains what conditions cause moisture to appear at or around diffusers, and how to prevent this from happening |
97.04 KB |
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73 Effective Area vs. Free Area
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Describes the differences between effective and free area, and also explains how they are used in our industry |
93.23 KB |
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74 Fusible Link Dampers
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Explains what fusible links are, how they work, where they are commonly used, and where they shouldn't be used |
96.07 KB |
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75 Models 210 and 265 Floor Registers
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Details the history, strengths, advantages, and characteristics of our popular heavy-duty floor grilles: the 210 and 265 |
119.97 KB |
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76 Information Required to Size B-Vent
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Lists out all the information that is needed in order to determine the proper size for a B-Vent system. |
80.46 KB |
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77 Chimney Liner Applications and Limitations
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General overview of chimney liners, how they are to be used, and how they are limited |
87.17 KB |
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78 Return Grille Locations
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Describes the influence of return grilles on room air motion, common sizing guidelines, and proper placement guidelines. |
80.19 KB |
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79 Sizing a Register or Diffuser
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Guidelines and simple rules of thumb for determining the proper size grille, register, or diffuser to use. |
68.82 KB |
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80 Noise Criteria Part 2
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Part 2 of 2 on understanding and using NC data |
112.97 KB |
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81 Noise Criteria part 1
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Part 1 of 2 on understanding and using NC data |
81.27 KB |
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82 Throw Blow Flow Oh No
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An explanation of Throw and other flow characteristics of GRDs |
81.89 KB |
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83 Spiral Diffuser Scoop Used as a Balancing Device
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Spirals in branch ducts need a means of air adjustment per the IMC. This document elaborates on how to use the factory 'scoop' to balance airflow. |
78.56 KB |
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84 Air Ducts vs. Air Connectors
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Outlines the differences and similarities between air ducts and air connectors. |
65.19 KB |
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85 Type B Gas Vent Interconnection Fittings
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Describes proper connections for adapting between brands of B-Vent |
243.39 KB |
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Introducing the Tech Talk Newsletter
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Introduction to the series |
87.90 KB |