Retrotec DucTester 200 Series Residential Applications Manual do Utilizador

Retrotec Inc. Model 200 DucTester Operation Manual for Residential Applications rev-2015-01-22

Page 10 of 91 ©Retrotec Inc. 2015 1.1.1. Range Configurations Figure 2: Three flow rings: Low, Mid and Open, restrict flow through the fan inle

Page 11 of 91 ©Retrotec Inc. 2015 1.1.2. Retrotec calibrated fan: Model 200 The Model 200 fan is included in the DU200, DE200, and DK200 duct tes

Page 12 of 91 ©Retrotec Inc. 2015 The exterior of the inlet has the two self-referencing pressure pickups. They are connected to the green Input

Page 13 of 91 ©Retrotec Inc. 2015 Figure 7: Flex Duct for duct testing system with Flange and strap. 1.4 Additional included duct testing equip

Page 14 of 91 ©Retrotec Inc. 2015 1.4.4. Toolbag keeps all testing components in one place The Deluxe Condura Toolbag provides enough volume to h

Page 15 of 91 ©Retrotec Inc. 2015 1.4.8. Additional accessories for the DucTester The following is a table containing DucTester system componen

Page 16 of 91 ©Retrotec Inc. 2015 Part Number Description Image DM221 DM-2 Dual Channel Digital Gauge DM203 9V DM-2 Power Supply for DM-2 DM20

Page 17 of 91 ©Retrotec Inc. 2015 Part Number Description Image PP102 Large Pressure Pan (24.5 in x 24.5 in x 8.75 in), handle, no pole (Include

Page 18 of 91 ©Retrotec Inc. 2015 Part Number Description Image AL111 Aluminum Frame Crossbar #5, lower AL112 Aluminum Frame Crossbar #6, upper

Page 19 of 91 ©Retrotec Inc. 2015 2. Why measure Duct Leakage? 2.1 Energy loss Leaky ducts pose health, safety and comfort problems and account f

Page 2 of 91 ©Retrotec Inc. 2015 Copyright © 2012-2015 Retrotec Inc., All rights reserved. This document contains materials protected under Intern

Page 20 of 91 ©Retrotec Inc. 2015 3. Locating Duct Leaks Air leakage from a duct system can be very hard to identify. Most duct systems are pred

Page 21 of 91 ©Retrotec Inc. 2015 3.4 How much duct leakage is acceptable under existing Codes? How much duct leakage is acceptable? The table p

Page 22 of 91 ©Retrotec Inc. 2015 Program/Region Units/Test Pressure Leakage requirement 2012 IECC International Energy Conservation Code Global

Page 23 of 91 ©Retrotec Inc. 2015 Table 2: Maximum allowable duct leakage (Residential) according to existing Codes Code: Based on 2009 IECC GA S

Page 24 of 91 ©Retrotec Inc. 2015 3.5 Set up your DucTester for duct leakage testing A step by step guide to the Duct Testing Procedures can be f

Page 25 of 91 ©Retrotec Inc. 2015 3. Press [On] and then [Exit] to view the battery indicator in the top left corner of the screen. 4. If the

Page 26 of 91 ©Retrotec Inc. 2015 8. Connect the Control Cable to the fan, unless you wish to use the Manual Speed Control Knob. When the Contro

Page 27 of 91 ©Retrotec Inc. 2015 Some programs require test results from two test measurement locations. The two results are averaged, which hel

Page 28 of 91 ©Retrotec Inc. 2015 3.8.2. OR Connect the Flex Duct to the air handler cabinet Alternatively, connect a Flex Duct to the air-handle

Page 29 of 91 ©Retrotec Inc. 2015 While it would be ideal to seal between the register and the wall using Grill Mask, caution must be use

Page 3 of 91 ©Retrotec Inc. 2015 2.3 Problems from duct leakage: ...

Page 30 of 91 ©Retrotec Inc. 2015 3.11 Select a test direction Duct leakage can be measured by blowing air into the ducts to pressurize the ducts

Page 31 of 91 ©Retrotec Inc. 2015 4. Set up the gauge to display Duct Leakage Results Read the Total Duct Leakage results directly from the gauge

Page 32 of 91 ©Retrotec Inc. 2015 (EfLA) @ Pressure n/a n/a n/a n/a n/a Air Changes Off Off Off Off Off (Air Changes) @ Pressure n/a n/a n/

Page 33 of 91 ©Retrotec Inc. 2015 (Flow per Area) @ Pressure Off Off Off EqLA per Area Off Off Off (EqLA per Area) @ Pressure Off Off Off EfLA

Page 34 of 91 ©Retrotec Inc. 2015 Use [Set Pressure] on gauge. Press [Set Pressure] [25] [Enter]. The fan will automatically accelerate and main

Page 35 of 91 ©Retrotec Inc. 2015 5. Conduct the Duct Leakage tests 5.1 Total Duct Leakage A Total Duct Leakage test measures the total amount o

Page 36 of 91 ©Retrotec Inc. 2015 Figure 34: Total Duct Leakage under pressurization - DucTester and tubing setup. 5.2 Duct Leakage to Outdoors

Page 37 of 91 ©Retrotec Inc. 2015 Figure 36: Method #1 Duct Leakage to Outdoors, under depressurization 7. If the Blower Door pressure reading

Page 38 of 91 ©Retrotec Inc. 2015 4. With DucTester fan off, set the Blower Door to 25 Pa by pressing [Set Pressure] [25] [Enter] on the Blower D

Page 39 of 91 ©Retrotec Inc. 2015 with respect to the outdoors. The method requires connecting and disconnecting the blue tube, alternately measu

Page 4 of 91 ©Retrotec Inc. 2015 5.5 If no Results are displayed (TOO LOW or ---) ... 41 5

Page 40 of 91 ©Retrotec Inc. 2015 For pressurization, set the Blower Door to blow into the building and the DucTester to blow into the duct syste

Page 41 of 91 ©Retrotec Inc. 2015 5.4 Combined Total Duct Leakage and Duct Leakage to Outdoors Method This combined method measures both Total Duc

Page 42 of 91 ©Retrotec Inc. 2015 3. Re-adjust DucTester fan speed. If the Range Ring installed is “Low”, (the one with the smallest hole), ther

Page 43 of 91 ©Retrotec Inc. 2015 6. Restore the house to pre-test conditions after testing is complete Notice the conditions in the building upo

Page 44 of 91 ©Retrotec Inc. 2015 7. Create a Duct Leakage Test Report with Potential Energy Savings The Retrotec Duct Leakage Test Reporting sof

Page 45 of 91 ©Retrotec Inc. 2015 7.1 Get the Excel spreadsheet based software to run on your system 7.1.1. Enable Macros (with Office 2007) For

Page 46 of 91 ©Retrotec Inc. 2015 Click “Edit Anyway.” Now go back to the main screen and you will see the option to enable macros: Click the “E

Page 47 of 91 ©Retrotec Inc. 2015 “Leakage Area”: square centimeters, or cm2 7.3 Choose Duct Test type Click to select the type of test you are pe

Page 48 of 91 ©Retrotec Inc. 2015 This input is optional, and is only needed if you want the report to display the “Duct Leakage as a % of Air Ha

Page 49 of 91 ©Retrotec Inc. 2015 7.7 Enter readings from this test 7.7.1. Duct Pressure Enter the Duct Pressure during the test, which is the &q

Page 5 of 91 ©Retrotec Inc. 2015 7.9 Save the Duct Leakage Test Report as a PDF file ... 52 7.9.

Page 50 of 91 ©Retrotec Inc. 2015 “Open,” “Mid,” or “Low” (200 series fan); "Open”: To clear the test data shown in this section, click th

Page 51 of 91 ©Retrotec Inc. 2015 For further detail on Duct system loss parameter calculations, refer to section 10. If you are unsure of what t

Page 52 of 91 ©Retrotec Inc. 2015 7.8.7. Return Leakage Penalty This is the estimated fraction of energy loss of the return side. The default v

Page 53 of 91 ©Retrotec Inc. 2015 8. Find air leaks in the ducts Locating leaks in the ducts can be a tricky process, and there are a number of m

Page 54 of 91 ©Retrotec Inc. 2015 Table 5: Retrotec Pressure Pans Pressure Pan Dimensions (in) Part number Large 24.5 x 24.5 x 8.75 PP101 Small 1

Page 55 of 91 ©Retrotec Inc. 2015 9. Measure the Air Handler system flow 9.1 For Code compliance For Code compliance testing, the air handler flo

Page 56 of 91 ©Retrotec Inc. 2015 Attach the blue Tube to the connector on the Flow Hood. Connect the other end to the “Input A” port (blue) on t

Page 57 of 91 ©Retrotec Inc. 2015 pressure, even though the gauge is not controlling anything. Press the [@ Pressure] key until the supply plenum

Page 58 of 91 ©Retrotec Inc. 2015 the Open Range. Set the pressure to the just measured supply plenum pressure. Press [Set Pressure] and enter t

Page 59 of 91 ©Retrotec Inc. 2015 10. Estimate HVAC system energy loss from ducts 10.1 Duct Air Leakage Measurements In this section, you will l

Page 6 of 91 ©Retrotec Inc. 2015 Flow Conversion Table for Duct Test Pressure of 25 Pa ... 71 Fl

Page 60 of 91 ©Retrotec Inc. 2015 Average Operating Pressure (Pa) Multiplier for CFM25 45 1.42 50 1.52 55 1.60 60 1.69 65 1.77 70 1.85 75 1.93 80

Page 61 of 91 ©Retrotec Inc. 2015 Return Loss Factor = (RLS x RLP x RPM) Where: RLS is Return Leakage Split (default 0.5) RLP is Return Leakage

Page 62 of 91 ©Retrotec Inc. 2015 CFM25 multiplier for return = 1.22 CFM25 multiplier for supply = 1.0 (default) Leakage splits: SLS = 2

Page 63 of 91 ©Retrotec Inc. 2015 11. Field Check the DucTester to find out what is not working Standard procedure says you calibrate your gauges

Page 64 of 91 ©Retrotec Inc. 2015 blocked with a drop of water which still allows the gauge to work but the readings are only a fraction of what t

Page 65 of 91 ©Retrotec Inc. 2015 To field check the DucTester calibration 1. Tape the Field Calibration Plate to the Flex Duct Flange, and attac

Page 66 of 91 ©Retrotec Inc. 2015 12. Avoid common mistakes The following mistakes are commonly made when performing a duct test, and can signifi

Page 67 of 91 ©Retrotec Inc. 2015 13. Create a Blower Door with a DucTester fan 13.1 Use a DucTester to test tight enclosures To turn a duct te

Page 68 of 91 ©Retrotec Inc. 2015 13.2 Blower Door System (tight enclosures) details The blower door systems (US200, EU200, UK200) include all o

Page 69 of 91 ©Retrotec Inc. 2015 Appendix A: Calculate Air Flow based on Pressure readings The air flow being produced by the calibrated fan is

Page 7 of 91 ©Retrotec Inc. 2015 Important equipment-related safeguards When using electrical appliances, basic safety precautions should always b

Page 70 of 91 ©Retrotec Inc. 2015 Range n K K1 K2 K3 MF E3 0.5000 10.0700 0.000 1.0 0.0000 1.0 Mn True Flow #14 0.5000 115.0000 0.000 1.0 0.0000

Page 71 of 91 ©Retrotec Inc. 2015 Appendix B: Flow Conversion Tables Flow Conversion Table for Duct Test Pressure of 25 Pa Table 10: Flow in CF

Page 72 of 91 ©Retrotec Inc. 2015 Flow Conversion Table for Duct Test Pressure of 50 Pa Table 11: Flow in CFM for various fan pressures, Retrotec

Page 73 of 91 ©Retrotec Inc. 2015 Flow Conversion Table for Duct Test Pressures greater than 50 Pa The preceding tables can be used for much highe

Page 74 of 91 ©Retrotec Inc. 2015 Appendix C: Calculate flow if required test pressure cannot be reached “n” setting for estimating flow @ pressu

Page 75 of 91 ©Retrotec Inc. 2015 The @ Pressure extrapolation feature is very useful for ensuring that results taken for flow reflect the flow at

Page 76 of 91 ©Retrotec Inc. 2015 If the “n” value on the gauge is set to 0.60 and the enclosure “n” is different, a small error, as shown in Tabl

Page 77 of 91 ©Retrotec Inc. 2015 For most ducts, the n value is usually 0.60. For the flow at 50 Pa, replace “25” with “50.” Rather than using

Page 78 of 91 ©Retrotec Inc. 2015 For example, if you read 1000 CFM at a building pressure of 30 Pa, the "Cannot reach 50 factor" from T

Page 79 of 91 ©Retrotec Inc. 2015 Appendix D: Troubleshooting Occasionally simple problems do occur with a DucTester system. If the problem is

Page 8 of 91 ©Retrotec Inc. 2015 house but when corrected, leaky supplies may reverse that and cause depressurization which could result in back d

Page 80 of 91 ©Retrotec Inc. 2015 PCB assembly as the one that has “Control” printed on the mounting plate. We will refer to the Power PCB assemb

Page 81 of 91 ©Retrotec Inc. 2015 4. Carefully remove old tube. It is easy to damage connector when removing old tube. If removal is difficult,

Page 82 of 91 ©Retrotec Inc. 2015 10. Set the old assembly aside, and connect the new one 11. Connect the wires to the Power PCB assembly by at

Page 83 of 91 ©Retrotec Inc. 2015 Model 210 and 220 – obsolete models no longer in production The 210 and 220 model duct testing fans were sold wi

Page 84 of 91 ©Retrotec Inc. 2015 Adjusting DucTester Motor Mount (for Model 220) If, when rotating, the fan blade rubs on the fan casing, it may

Page 85 of 91 ©Retrotec Inc. 2015 Appendix E: Using a generator for power Retrotec recommends a generator with inverter type AC power output. S

Page 86 of 91 ©Retrotec Inc. 2015 Generators Honda Generator EU2000 (120V, 2000W, 67 lbs)  Works will all DucTester fan models.  Works with

Page 87 of 91 ©Retrotec Inc. 2015 Appendix F: Duct-Test Recording Forms Total Duct Leakage Test Form Test date: _______________/20_

Page 88 of 91 ©Retrotec Inc. 2015 Total Duct Leakage Test Form (CA) Test date: _______________/20____ Fan Model _______________Fan S

Page 89 of 91 ©Retrotec Inc. 2015 New duct systems must leak less than 6% of the air handler’s flow. Maximum allowable duct tester measurement bas

Page 9 of 91 ©Retrotec Inc. 2015 1. DucTester System Equipment Duct testing systems (US240, EU240, UK240) A complete DucTester includes a calibr

Page 90 of 91 ©Retrotec Inc. 2015 Glossary Term Definition ACH50 or ACH @ 50 Pa Designation for “Air Changes at 50 Pa.” Can be calculated by tak

Page 91 of 91 ©Retrotec Inc. 2015 Term Definition This ELA is sometimes called the EqLA or Canadian ELA because it was first used in the Canadian