Retrotec DM-2A User Manual download pdf (Page 44)

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©Retrotec Inc. 2012

Tip: Box pressure of 8 Pa or less is recommended because higher pressures will decrease the exhaust

fan flow rate. Box pressures below 3 Pa are less accurate because small fluctuations in pressure will

affect the flow a lot. Try the same fan with different holes to see the different results.

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1.1 Gauge Overview 6
1.1.2 The DM-2 Screen 7
1.2 Batteries 8
1.2.2 Charging batteries 9
1.2.5 Replacing batteries 9
1.3 Resetting the Gauge 10
1.4 Screen Contrast 11
2 DM-2 Keypad Functions 12
2.1.5 Mode 13
2.1.6 Range Config 13
2.1.7 Setup 14
2.1.8 Baseline 14
2.1.11 Set Pressure 15
2.1.9 Time Avg 15
2.1.10 Auto Zero 15
2.1.12 Set Speed 16
2.1.13 Jog/Hold 16
2.1.14 @ Pressure 17
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3.1 Setup Menu 19
3.1.1 Full Screen Timeout 20
3.1.2 Restore Settings 20
3.1.3 Language 21
3.1.4 Battery Type 21
3.1.5 Display Version Info 21
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3.1.7 Power Down Hour 23
3.1.8 Surface Area Unit 24
3.1.9 Building Volume Unit 24
3.1.10 European, Separator 24
3.2 Device Setup 25
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3.3 Mode Setup 28
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4.1 Differential Pressure 30
4.3 Analog Magnehelic Gauges 31
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8.1 Making the Connections 40
8.1.2 Control connections 41
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9 Troubleshooting 45
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9.13 Updating Firmware 54
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Cannot Reach 50 Pa Factors 60
Cannot Reach 25 Pa Factors 61
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 64
Inside Temperature (F) 65
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Glossary 70
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Retrotec DM-2A User Manual Page 44

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