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Idiomas disponibles
Idiomas disponibles
Installation Procedures
The length difference between outlet duct and inlet duct
should be limited to be less than 2:1;
Make the ducts as short as possible;
Keep the min. elbow quantity;
Wind the heat insulating material around the flange between
the main unit and the exhaust pipe for heat insulation and
sealing. Install the piping before fitting up the ceiling.
6. Account of simple rectangle duct
Assume the friction resistance per unitis 1 Pa/m, when the size of one side of air pipe is 250mm,
like below figure:
300m
3
/h
B
300m
3
/h
A
Account of resistance in duct:
straight pipe
bended section
air outlet section
static pressure box
inlet grille (with filter)
3
1200m
/h
unit
A
3
1200m
/h
A
static pressure box
with filter
(purchased additionally)
account as 1Pa per meter,
1Pa/m
each bend regarded as 3-4m
of straight pipe
account as 25Pa
50Pa per static pressure box
40Pa for each one
11
incorrect
incorrect
flux
3
1200m
/h
A
3
(20m
/min)
3
300m
/h
B
3
(5m
/min)
simple duct selection Note: 1 Pa/m
shape
square pipe
item
flux
3
3
(mm x mm)
m
/h(m
/min)
100
250
200
250
250
300
250
400
500
250
600(10)
250
800
250
250
1,000
250
1,200(20)
250
1,400
250
1,600
250
1,800(30)
250
2,000
250
2,400
3,000(50)
250
3,500
250
250
4,000
4,500
250
250
5,000
5,500
250
6,000(100)
250
correct
gas pipe
(mm x mm)
250 x 310
250 x 120
size
x
60
x
90
x
120
x
140
x
170
x
190
x
230
x
270
x
310
x
350
x
390
x
430
x
470
x
560
x
650
x
740
x
830
x
920
x 1000
x 1090
x 1180
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