www.DaikinApplied.com 15
IM 830-6
Typical Installation Methods
If the fresh air opening has not yet been made, see
for the recommended locations and the job-
specific plans for the exact location. Follow local codes.
Cut the wall opening so that it is slightly larger than the louver
being installed. For dimensions, see
already there, measure to be sure there is a minimum of 3/8"
(9mm) clearance around all sides. For masonry installations, a
lintel must be installed above all louvers.
In most applications, the job specifications require ductwork
connection between the louver and the unit. When using
ductwork, properly caulk it to ensure a weather-tight seal.
This is critical in preventing freeze-ups, cold drafts, and air
infiltration. Be sure the wall is smooth, square, and provides a
&
Table 2: Recommended Wall Openings For Wall Louvers
B
See
C
See
Recommended
wall openings for
wall louvers
Maximum
number of
VentiMatic
shutters which
can be mounted
on standard
louver
VentiMatic
Shutter(s)
air capacity
(maximum)
Length
Height
24"
Shutter
36"
Shutter
cfm
L/s
24"
27"
24⅝"
10⅞"
1
0
500
236
36"
39"
36⅝"
10⅞"
0
1
750
354
48"
51"
48⅝"
10⅞"
2
0
1000
472
60"
63"
60⅝"
10⅞"
1
1
1250
590
72"
75"
72⅝"
19⅞"
0
2
1500
708
Before setting the louver, construct a sloping, sealed cement
mortar base to drain unwanted moisture to the outside, (see
). Be sure the mortar base is 1" (25mm) thick at the
unit and tapers toward the louver. This is critical in preventing
water leaks. Be sure the sealed cement mortar base is smooth
and flush with the interior wall.
Figure 28: Typical Louver Installation with Sloping Sealed Cement
Mortar Base
Ducting
Sealed Cement
Mortar; Pitch Away
From Unit
Insulation
Wall
Louver
No
Caulk
If it is not possible to construct a sloping mortar base, then
field-supplied flashing is required. See
. The flashing
should terminate flush with the exterior of the building. Place
a bead of caulk under the flashing to prevent moisture from
wicking back to the unit. Do not caulk the joint between the
louver and the flashing. This joint is designed to let unwanted
moisture escape.
Figure 29: Typical Louver Installation with Flashing
Louver
No
Caulk
Ducting
Wall
Insulation
Caulk
(By Others)
Flashing
(By Others)
CAUTION
!
Personal injury hazard. Wear protective gloves to avoid possible cuts
and abrasions from exposed edges. Avoid contact with sharp edges.
through
sure the drain lip (vertical louver) is at the bottom, horizontal
louver blades face down and the bird screen is towards the
unit, (see
bead of caulk along the top and the two vertical sides of the
louver, leaving the bottom uncaulked so that if moisture gets
into the area between the louver and the unit, it can drain to
the outside, unrestricted.
If the louver is supplied with flanges, (see
) place an additional bead of caulk on the inside of the top
and side flanges that come in contact with the building facade.
Do not caulk the bottom flange. Place the louver in the opening
and push it tight against the supplied building, fastening it
to the exterior of the building using fasteners (by others)
appropriate to the installation. Seal the top and sides with a
waterproof caulk to make it weather-tight. Do not caulk the
bottom of the louver; doing so might trap unwanted moisture
behind the flange, (see
).
If the louver is supplied with no flanges, (
), place the louver in the opening so that it is recessed
a minimum 1/16" (2mm) beyond the building facade or as
directed in the architectural plans. If specified in the plans,
secure the louver in the wall using mechanical fasteners
(supplied by others) appropriate to the installation. (See
for suggested fastening). With the louver
solidly in place, run a bead of caulk around the perimeter of
the louver to seal it weather-tight. Do not plug the weep holes
(horizontal louver) or the drip line (vertical louver). This might
restrict the flow of unwanted moisture to the outside.
See
if flashing was used instead of the sloping
mortar base, caulk the flashing where it meets the inside of the
opening between the louver and the unit. This helps prevent
moisture from getting under the flashing and into the room.