Blower Door Quickie Set-Up Guide

RetroTec Blower Door Duct Tester DM-2 Meter

Color Coded Connections

Retrotec DM-2 will work with all of these devices

Input B Ref B Ref A Input A

Program your DM2 for Blower Door (or Duct Tester) Turn Manometer ON Press On/Off button Press Exit button Set Up Manometer Press Setup button Arrow up or down to Device Setup, then press Enter Enable/disable Devices Highlight with up down arrows, right arrow clicks yes/no Select 1000 eliminate duct tester DU 200 for a dedicated blower door meter Hit EXIT once set up Scroll and select Mode Set Up press Enter Enable/Disable different tests Flow cfm @ 50 Pa should be active: to change scroll to test pressure then press Enter. Change to desired pressure, then press Enter again. For Duct Tester change to 25 pa Exit, Exit to get to the main screen

N = .60 ( located in Setup ) Time = 1 second ( toggle Time Avg button) Zero = On ( toggle Auto Zero button)

Meter always wants to go back to default screen, always just press Exit to return to previous screen You can change the Full Screen Timeout duration by pressing Setup and scroll down to Full Screen Timeout (15 seconds is a good start)

Check Devices Enabled Toggle Device to see what is enabled Should display only the devices you want to use For Blower Door Retrotec 1000 Leave on screen, press Range/Config Scrolls through various Plates Make sure the setting matches actual equipment configuration Leave at this configuration, don’t need to press Enter Hint: to start your tests with a good guess at the correct Plate use the following flow ranges for Model 1000 Blower Door: Open = 5,600 cfm A = 4,000 cfm B = 3,000 cfm

Retrotec Blower Door Test Assumes DM-2 Set up for Blower Door Press ON Press Exit (to continue) Pressure and Flow @ 50 Set @ Pressure (to 50 Pascals) Punch Buttons 5 and 0 Press Enter Press Exit Twice (to Stop Test)

Makes your meter much easier to use NO for Duct Tester Yes for Blower Door

Toggle through Mode again to look at fields: Press Mode Shows two channels A&B Toggle through Mode again to look at fields: Channels A & B Pressure / Flow Air Changes/Hour + volume ft3 Press @Pressure to get meter to convert and display CFM @ 50 (toggles between the @ and actual flows) For a 2-Point Test, turn the @ 50 off, then set speed to 25 to get the 25 and 50 values for the 2 Point Test

Change Volume Press Mode until volume is displayed Press Enter volume Area Clears the current volume Enter new volume with number keys For air changes per hour use Ft3 (ELA would use ft2, enable ELA with Mode settings) Press Enter to save your input

Automatic Run Recommended Once equipment is set up and meter settings are correct, it is recommended to run the fan speed through manometer Press Set Pressure Blower Door: Set Room Pressure to @50 Pa Press Enter The fan will respond automatically Be prepared!

Retrotec Blower Door Please confirm contents: Large Case Fan + Plates Plate A Plate B Plate C-8 Fabric Door Panel + Fan Cover Power Cord Tubing: Red, Green, Blue (and extras) Tube Fittings Static Pressure Tap Door Panel Frame

Retrotec Blower Door Please confirm contents: Meter Case DM-2 Meter Power Supply/Charger “Umbilical” Cord 8 – 3” black plugs for C-8 plate USB Cable Useful Forms + Handouts Manual

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