Typical Installation Methods - Daikin AVS Installation Manual

Installing Louvers

Typical Installation Methods

If the fresh air opening has not yet been made, see figures 9 through 16
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 Table 3. If the opening is 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 thick wall applications, the portion of the wall between the louver
and the unit is the outside air plenum. Line this plenum area with 3/8"
(9 mm) mortar or other suitable material. In some applications, the job
specifications require a metal sleeve connection between the louver and
the unit. If using such a sleeve, 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 suitable
mating surface.
Table 3 - Recommended Wall Openings For Wall Louvers
Recommended
Wall Openings
B C
For Wall Louvers
Length Height 24" Shutter 36" Shutter
24" 27" 24 ⁄ " 10 ⁄ "
5 7
8 8
(610) (659) (613) (267)
36" 39" 36 ⁄ " 10 ⁄ "
5 7
8 8
(914) (991) (918) (267)
48" 51" 48 ⁄ " 10 ⁄ "
5 7
8 8
(1219) (1295) (1222) (267)
60" 63" 60 ⁄ " 10 ⁄ "
5 7
8 8
(1524) (1600) (1527) (267)
72" 75" 72 ⁄ " 19 ⁄ "
5 7
8 8
(1829) (1905) (1832) (495)
Before setting the louver, construct a sloping, sealed cement mortar base
to drain unwanted moisture to the outside, (see figure 17). Be sure the
mortar base is 1" (25mm) thick at the unit and tapers toward the louver.
The mortar at the unit also acts as a backing against which the open
cell gasket of the unit itself can seal. This is critical in preventing water
leaks and air leaks under the unit. Be sure the sealed cement mortar
base is smooth and flush with the interior wall.
If it is not possible to construct a sloping mortar base, then field-supplied
flashing is required. See figure 18. The flashing should terminate flush
with the exterior of the building. Place a bead of caulk under the flashing
Figure 17 - Typical Louver Installation with Sloping Sealed Cement
Mortar Base
Wall
Louver
Sealed Cement
Mortar;
Pitch Away
From Unit
No
Caulk
Page 10 of 60
Maximum Number of VentiMatic
VentiMatic Shutters Shutter(s)
Which Can Be Mounted Air Capacity
On Standard Louver Maximum
cfm
1 0 500
0 1 750
2 0 1000
1 1 1250
0 2 1500
Unit
Unit Gasket
1" (25mm)
Floor
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 18 - Typical Louver Installation with Flashing
Louver
No
Caulk
Caulk
(By
Others)
Personal injury hazard. Wear protective gloves to avoid possible
L/s
cuts and abrasions from exposed edges. Avoid contact with sharp
236
edges.
354
See figures 6 through 19. Before setting the louver, be sure the drain
472
lip (vertical louver) are at the bottom, horizontal louver blades face
down and the bird screen is towards the unit. See figures 20 and 21.
590
Place a heavy bead of caulk along the top and the two vertical sides of
708
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 figure 20) 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 figure 20)
If the louver is supplied with no flanges, (see figure 21) 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 figure 19 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 figure 21)
See figure 18. 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.
Wall
Unit
Flashing
(By
Unit Gasket
Others)
1" (25mm)
Floor
CAUTION
IM 817-4