Retrotec DucTester 341 Manuel d'utilisateur télécharger pdf (Page 60)

Page 60 of 83

©Retrotec Inc. 2014

Average Operating

Pressure (Pa)

Multiplier for

CFM25

1.42

1.52

1.60

1.69

1.77

1.85

1.93

2.01

2.08

2.16

2.23

100

2.30

105

2.37

110

2.43

115

2.50

120

2.56

125

2.63

130

2.69

135

2.75

140

2.81

145

2.87

150

2.93

155

2.99

160

3.05

165

3.10

170

3.16

175

3.21

180

3.27

185

3.32

190

3.38

195

3.43

200

3.48

When possible, use actual operating conditions to determine the best multiplier to use from the table

above.

Calculate a loss factor for supply and return leaks

Supply Loss Factor = (SLS x SLP x SPM)

Where: SLS is Supply Leakage Split (default 0.5)

SLP is Supply Leakage Penalty (default 1.0)

SPM is Supply Pressure Multiplier (default 1.0)

Supply Loss Factor = 0.5 * 1.0 * 1.0

= 0.5

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DucTester Operation Manual 1
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1. Why measure Duct Leakage? 10
Program/Region 11
Units/Test 11
Pressure 11
Leakage requirement 11
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5. Model 341 DucTesters 17
5.1.1. Range Configurations 18
5.2 Digital Gauge 20
5.3 Flex Duct 21
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6.2 Charge the gauge 23
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Flat faces down 26
[Stop] to stop the fan 27
Optional Flow 29
Hood connector 29
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Optional Quick 31
Connect Collar 31
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[@] button 35
8.1 Total Duct Leakage 36
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Before leaving the house 44
Savings 45
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10.2.1. Imperial units 47
10.2.2. Metric units 47
10.3 Choose Duct Test type 48
10.6.3. Baseline pressure 49
] menu allows for this 49
10.7.1. Duct Pressure 49
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11.1 Using a smoke puffer 53
11.2 Using theatrical smoke 53
11.4 Using a wet hand 53
11.5 Using a Pressure Pan 53
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12.1 For Code compliance 55
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12.9 Other methods 58
13.2 Methodology 59
Average Operating 60
Pressure (Pa) 60
Multiplier for 60
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14.1 Field Check the gauge 63
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15. Avoid common mistakes 65
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Dimensions 67
Pressure readings 68
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Cannot Reach 25 Pa Factors 72
Cannot Reach 50 Pa Factors 73
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Generators 78
Portable Power Supplies 78
Page 81 of 83 81
Glossary 82

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Retrotec DucTester 341 Manuel d'utilisateur Page 60

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