Manual 2100-362D
Page
3 of 10
DESCRIPTION
The motorized fresh air damper WGMFAD is an
internally mounted damper designed to bring in up to
25% fresh air. The damper blade is powered by a 24
VAC motor with spring return on power loss. The
damper is powered open anytime the unit blower motor
is energized.
This ventilation device does not include an exhaust
provision. Depending on the tightness of the structure,
an independent exhaust provision may be needed to
obtain the ventilation air quantities shown.
APPLICATION
The amount of outside fresh air brought into the
structure is dependent on the supply and return duct
static pressure present in the duct system. Refer to
Table for ventilation air that will be supplied at different
duct static pressure for the model installed.
For free blow applications with return air filter grille
and supply grille, use 0.00 supply air static pressure and
0.1 return air static pressure.
TABLE 1
WGMFAD-3A VENTILATION AIR
For use with W24G Model
D
E
E
P
S
H
G
I
H
c
i
t
a
t
S
r
i
A
y
l
p
p
u
S
)
M
F
C
(
r
i
A
l
a
t
o
T
/
r
i
A
n
o
i
t
a
l
i
t
n
e
V
0
0
.
0
5
2
3
1
/
0
5
1
0
0
3
1
/
0
3
3
5
7
2
1
/
0
8
4
0
4
2
1
/
0
0
6
0
0
2
1
/
0
8
6
0
4
1
1
/
0
3
7
0
6
0
1
/
0
5
7
0
2
.
0
0
9
1
1
/
0
2
1
0
5
1
1
/
0
1
3
0
3
1
1
/
5
6
4
0
9
0
1
/
0
8
5
5
3
0
1
/
0
6
6
5
8
9
/
0
0
7
5
2
9
/
0
2
7
0
4
.
0
0
4
0
1
/
0
1
1
0
0
0
1
/
0
9
2
0
4
9
/
0
4
4
0
8
8
/
0
5
5
5
4
8
/
0
4
6
0
6
7
/
0
9
6
A
N
c
i
t
a
t
S
n
r
u
t
e
R
0
0
.
0
5
0
.
0
0
1
.
0
5
1
.
0
0
2
.
0
5
2
.
0
0
3
.
0
M
U
I
D
E
M
D
E
E
P
S
c
i
t
a
t
S
r
i
A
y
l
p
p
u
S
)
M
F
C
(
r
i
A
l
a
t
o
T
/
r
i
A
n
o
i
t
a
l
i
t
n
e
V
0
0
.
0
0
3
1
1
/
0
4
1
0
9
0
1
/
0
0
3
5
7
0
1
/
0
5
4
0
5
0
1
/
0
7
5
0
0
0
1
/
0
7
6
0
4
9
/
0
2
7
0
5
8
/
0
4
7
0
2
.
0
0
0
0
1
/
0
1
1
0
8
9
/
0
7
2
0
5
9
/
0
2
4
0
1
9
/
0
4
5
0
7
8
/
0
5
6
0
2
8
/
0
0
7
0
6
7
/
0
2
7
0
4
.
0
0
8
8
/
0
0
1
0
6
8
/
0
5
2
0
0
8
/
0
0
4
0
5
7
/
0
2
5
A
N
A
N
A
N
c
i
t
a
t
S
n
r
u
t
e
R
0
0
.
0
5
0
.
0
0
1
.
0
5
1
.
0
0
2
.
0
5
2
.
0
0
3
.
0
W
O
L
D
E
E
P
S
c
i
t
a
t
S
r
i
A
y
l
p
p
u
S
)
M
F
C
(
r
i
A
l
a
t
o
T
/
r
i
A
n
o
i
t
a
l
i
t
n
e
V
0
0
.
0
0
0
9
/
0
3
1
0
8
8
/
0
9
2
0
6
8
/
0
3
4
0
3
8
/
0
5
5
0
0
8
/
0
5
6
0
5
7
/
0
0
7
A
N
0
2
.
0
0
2
8
/
0
0
1
0
9
7
/
0
5
2
0
3
7
/
0
0
4
0
0
7
/
0
2
5
A
N
A
N
A
N
0
4
.
0
0
0
7
/
0
9
A
N
A
N
A
N
A
N
A
N
A
N
c
i
t
a
t
S
n
r
u
t
e
R
0
0
.
0
5
0
.
0
0
1
.
0
5
1
.
0
0
2
.
0
5
2
.
0
0
3
.
0