Daikin VAM Series Engineering Data page 183

EDMMT712101
• 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.
Static pressure / Airflow rate curve
19 m
100
(A)
50
0
50 100
Airflow rate (m
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).
VAM-HVE/HVLT Series
Example
IV
III
Ventilator for
0.5 m
duct
I
(A rough estimate when using
25 20
15 m
10 m
3) When finding from the equivalent length of straight pipe (re) and airflow
5 m
(B)
150 200
3
/h)
Filter for prevention of salt damage
(local preparation)
SA
RA
Please use filter more than MERV14 Grade to
prevent salt damange.
V
Outdoor feed
5 m
(equivalent length
0.5 m
of straight pipe
Duct diameter: φ100
9 m)
Material: galvanized
steel pipe
II
λ
= 0.02 galvanized steel pipe)
Parts Equivalent length of straight pipe (Pipe diameter : 100 mm)
I
II
III
IV
V
VI
Total
rate (Q)
Example) When selecting a model that satisfies performance
Equivalent length of straight pipe: 19 (m);
Airflow rate: 120 (m
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
more.
†450
Inspection
hatch
VAM
VI
0.5 m
2 m
0.5 m
2 m
5 m
9 m
19 m
3
/h)
OA
EA
Appendix
3
/h) or
181