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Retrotec DM32 User Manual

Page 91

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Page 91 of 94
©Retrotec Inc. 2014

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. One Pa is a
practical limit for measuring flow, below which readings cannot be taken. Try the same fan with different holes to see
the different results.