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F
a l
s
h
C
l o
r o
G
e r
e
n
N
D
Y
e
o l l
w
o
p
R
e
d
l A
N
o
l F
s a
h
s e
D
OUTLET
TUBE
INPUT
SAMPLING
TUBE
CENTER
LINE
OF DUCT
Figure 1
Typical Mounting of Duct Housing
Siemens Industry, Inc.
Building Technologies Division
Based on the results of these checks, the LED indicator
flashes as follows:
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C L
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RETURN
AIR
TYPE B: PROVISION FOR EXHAUSTING
DAMPER
RETURN
AIR
AIR DUCT
HOUSING
TYPE C: RETURN AIR UNDER POSITIVE PRESSURE
RETURN
AIR
RETURN AIR
BLOWER
Figure 2
Recommended Locations in Duct Systems
3
F
a l
s
h
n I
P
E
1 -
/ 1
P
E
1 -
1
C
7
r o
s i
7
3 -
0
o i
n
. s
2
½
-
TYPE A: CLOSED SYSTEM - NO EXHAUST
FRESH AIR INTAKE
FILTER
DAMPER
D
PLENUM
AIR DUCT
HOUSING
SOME PERCENTAGE OF RETURN AIR
FRESH AIR INTAKE
EXHAUST AIR
DAMPER
OUTPUT
FILTER
D
PLENUM
DAMPER
FROM SEPARATE BLOWER
FRESH AIR INTAKE
EXHAUST AIR
OUTPUT
DAMPER
D
PLENUM
DAMPER
AIR DUCT
HOUSING
e t
v r
l a
S (
e
c
o
n
d
) s
F
P
1 -
1
F /
P
1 -
1
/ C
H
F
P
1 -
1
H /
F
P
O
1 -
/ 1
S
F
P
1 -
1
S /
F
P
O
1 -
1
4
4
4
-
BLOWER
DAMPER
SUPPLY
D
AIR
AIR DUCT
HOUSING
BLOWER
DAMPER
SUPPLY
D
AIR
AIR DUCT
HOUSING
DAMPER
FILTER
BLOWER
DAMPER
SUPPLY
D
AIR
AIR DUCT
HOUSING
P/N 315-049708-5
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