Retrotec DucTester 200 Series Residential Applications - Manual (Page 9)

Page 9 of 91
©Retrotec Inc. 2015
1. DucTester System Equipment
Duct testing systems (US240, EU240, UK240)
A complete DucTester includes a calibrated fan, a digital dual-channel pressure gauge, and a Flex Duct
with flange to attach the fan to a register. Systems also include a hard-sided fan case, an AC adaptor for
the gauge, and a roll of Grill Mask. All pressure tubing and Control Cables are bundled together securely
in one easy to use Umbilical cable (included), and the included tubing accessory kit contains T
connectors and tube lengths.
Figure 1: A complete duct testing system.
1.1 The calibrated DucTester fan
Retrotec’s DucTester was specifically designed for testing ducts and tight enclosures. It has more than
three times the power necessary to test the leakiest duct system to current standards. The backward
curved centrifugal impeller is perfect for creating high test pressures. The elliptical nozzle is extremely
stable in both the pressurization and depressurization test directions, where it offers equivalent
accuracy in both directions.
A Flow Conditioner is not needed with Retrotec fans for depressurization testing. Some duct testing
fans require a flow conditioner when depressurizing a duct system, in order to get correct readings. The
Retrotec DucTester does not require a flow conditioner because it uses a flow nozzle, which is
intrinsically stable in either direction because the flow gets compressed as it goes through the nozzle.
All Retrotec models comply with ASTM E1554-07, ANSI/ASHRAE 152, ASTM E779-10, EN 13829, ATTMA
TS-1, CGSB 149.10 and RESNET standards.
The DucTester Fan can be used as part of a Blower Door system for testing tight enclosures, as shown in
section 13. For procedures on how to test an enclosure using a Blower Door system, see Blower Door
and Gauge Testing Manual.