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©Retrotec 2017
5.4.3. Flange for connecting flex to ductwork at register .............................................. 22
5.4.4. Toolbag keeps all testing components in one place ............................................. 22
5.4.5. Tubing Accessory Kit ............................................................................................. 22
5.4.6. Power Cord ........................................................................................................... 23
5.4.7. 9v Power Supply adapter for charging DM32 gauge ............................................ 23
5.4.8. Additional parts and accessories for the DucTester ............................................. 23
6. Prepare for the Duct Leakage Test .............................................................. 24
6.1 Unpack, connect the gauge to the DucTester ........................................................ 24
6.2 Charge the gauge .................................................................................................. 24
6.3 Follow the Quick Guide that came with your system ............................................. 24
6.4 Seal all supply registers ......................................................................................... 26
6.4.1. Before beginning the duct leakage test ................................................................ 26
6.5 Make all connections on the gauge and fan ........................................................... 27
6.6 Blue Tube location matters when testing leaky ducts ............................................ 28
6.7 Connect the Flex Duct to the Duct System ............................................................. 29
6.7.1. Connect to the return register .............................................................................. 29
6.7.2. OR Connect to the air handler cabinet ................................................................. 30
6.7.3. OR Connect to a return using a Flow Hood .......................................................... 30
6.8 Install Range Configuration on fan ........................................................................ 32
6.9 Select a test direction then connect flex duct to the DucTester .............................. 32
6.9.1. Blow air into the ducts for depressurization ........................................................ 32
6.9.2. Blow air out of the ducts for pressurization ......................................................... 33
7. Set up the gauge to display Duct Leakage Results ....................................... 34
7.1 Mode setup for duct testing in the US ................................................................... 34
7.2 Mode Setup for various standards around the world ............................................. 35
7.3 Setting up and using the DM32 gauge for Duct testing .......................................... 35
8. Conduct the Duct Leakage test ................................................................... 37
8.1 Total Duct Leakage ............................................................................................... 37
8.2 Duct Leakage to Outdoors with 2 gauges and 2 fans .............................................. 38
8.2.1. Method #1: Set both duct and house to -25 Pa (or 25 Pa) .................................. 38
8.2.2. Method #2: Set duct to house pressure to 0 Pa (using DucTester gauge) .......... 39
8.3 Duct Leakage to Outdoors with 1 gauge and 2 fans ............................................... 41
8.4 Combined Total Duct Leakage and Duct Leakage to Outdoors Method .................. 43
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