EDMMT712101
Appendix
VAM-HVE/HVLT Series
181
17.6 Precautions for Design and Installation
Salt Damage Measures of Coastal Regions
When thinking salt damage countermeasures are essential, please install the Ventilator to buildings in coastal regions, and connect
duct to filter (filter for preventing salt damage) that helps collect grain of sea salt on the outdoor intake outlet (OA).
• Use the Table-A on the previous page for calculating the resistance for each component of the duct system to the length of pipe.
• The following is a practice exercise.
VI
V
IV
III
I
II
5 m
0.5 m
0.5 m
Example
Duct diameter:
φ
100
Material: galvanized
steel pipe
Outdoor feed
(equivalent length
of straight pipe
9 m)
(A rough estimate when using
λ
= 0.02 galvanized steel pipe)
Ventilator for
duct
Parts
I
II
III
IV
V
VI
Total
0.5 m
2 m
0.5 m
2 m
5 m
9 m
19 m
3) When finding from the equivalent length of straight pipe (re) and airflow
rate (Q)
Example) When selecting a model that satisfies performance
Equivalent length of straight pipe: 19 (m);
Airflow rate: 120 (m
3
/h)
Drop a vertical line from intersection (A) of the pipe resistance
curve for re = 19 (m) and the static pressure / airflow rate
curve and select a model at point (B) that is 120 (m
3
/h) or
more.
Equivalent length of straight pipe (Pipe diameter : 100 mm)
100
50
0
15 m
10 m
5 m
25 20
50
100
Airflow rate (m
3
/h)
Static pressure / Airflow rate curve
(Pa)
Pipe resistance curve
150
200
19 m
(A)
(B)
Filter for prevention of salt damage
(local preparation)
VAM
OA
EA
SA
RA
450
Inspection
hatch
Please use filter more than MERV14 Grade to
prevent salt damange.
Summary of Contents for VAM Series
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Page 56: ...Control System EDMMT712101 54 VAM HVE HVLT Series C 3P343420 1E ...
Page 138: ...Installation Manual EDMMT712101 136 VAM HVE HVLT Series 3P607378 3C ...
Page 139: ...EDMMT712101 Installation Manual VAM HVE HVLT Series 137 3P607378 3C ...
Page 141: ...EDMMT712101 Installation Manual VAM HVE HVLT Series 139 C EM20A032 ...
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Page 147: ...EDMMT712101 Details of Optional Accessories VAM HVE HVLT Series 145 3P607378 3C ...
Page 148: ...Details of Optional Accessories EDMMT712101 146 VAM HVE HVLT Series 3P607378 3C ...
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Page 155: ...EDMMT712101 Details of Optional Accessories VAM HVE HVLT Series 153 4P457318 1D ...
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