Retrotec Commercial 441 and 451 DucTester Bedienungsanleitung PDF herunterladen (Seite 4)

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5. Test Procedure - Steps 1 to 7 ...................................................................... 19

5.1 Step 1 - Prepare the gauge .................................................................................... 19

5.2 Step 2 – Determine test criteria and prepare the ducts .......................................... 20

5.3 Step 3 – Connect DucTester to ducts ..................................................................... 21

5.3.1. Select a test direction ........................................................................................... 21

Setting up for pressurization ................................................................................................ 22

Setting up for depressurization ............................................................................................ 22

5.3.2. Install Range Configuration on fan ....................................................................... 22

5.4 Step 4 –Tubing, control and power connections .................................................... 23

5.5 Step 5 – Set up Test Pressure and Area in Gauge ................................................... 25

5.6 Step 6 – Measure the Leakage .............................................................................. 26

5.7 Step 7 – Test Passes .............................................................................................. 26

5.8 If test fails ............................................................................................................ 26

5.9 If no Results are displayed (--) ............................................................................... 27

5.10 Cannot achieve test pressure ................................................................................ 28

6. Finding duct leaks ....................................................................................... 29

6.1 Using a smoke puffer ............................................................................................ 29

6.2 Using theatrical smoke ......................................................................................... 29

6.3 Using an infrared camera ...................................................................................... 29

6.4 Using a wet hand .................................................................................................. 29

7. Field Check the DucTester to find out what is not working ......................... 30

7.1 Field Check the gauge ........................................................................................... 30

7.2 Field Check the DucTester as a system .................................................................. 30

8. Avoid common mistakes ............................................................................ 32

Appendix A: U.S. Duct Leakage Factors ............................................................. 33

8.1 Leakage Class........................................................................................................ 33

8.2 Leakage Class Calculation...................................................................................... 34

8.3 Pressure Class ....................................................................................................... 39

Appendix B: ..................................................................................................................... 40

U.S. Measurement Procedure for Leakage Factor ............................................................. 40

Pass Fail for U.S. tests ...................................................................................................... 42

Step 1 - Prepare the gauge - first time only ....................................................................... 43

Step 2 – Determine test criteria and prepare the ducts ..................................................... 43

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Retrotec Commercial 441 and 451 DucTester Bedienungsanleitung Seite 4