Daikin ARQ Installation And Maintenance Manual page 13

Figure 20: Typical louver installation with flashing
Louver
No
Caulk
Caulk
(By
Others)
CAUTION
Personal injury hazard. Wear protective gloves to avoid possible
cuts and abrasions from exposed edges. Avoid contact with sharp
edges.
See Figure 7 on page 9 through Figure 23. Before setting
the louver, be sure the drain lip (vertical louver) are at the
bottom, horizontal louver blades face down and the bird screen
is towards the unit as indicated in Figure 22 and Figure 23.
Place a heavy 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 Figure 22) 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.
If the louver is supplied with no flanges, (see Figure 23) 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 21 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 23)
If flashing was used, as shown in Figure 20 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.
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Wall
Unit
Flashing
(By
Unit Gasket
Others)
1" (25mm)
Floor
Figure 21: Suggested method for fastening louver (without
flange) inside wall opening
Angle Iron
(by others)
Figure 22: Vertical or horizontal blade wall intake louver
(flanged) (vertical blade shown)
Caulk
(top and 2 Sides)
Louvers
Drain Holes
(Do Not Block)
Flange
(4 Sides)
Figure 23: Vertical or horizontal blade wall intake louver
(recessed without flange) (horizontal blade shown)
Louvers
Drain Holes
(Do Not Block
With Mortar or
Caulking
Materials
13
Louver
(Bird Screen Not Shown)
Room Side
Wall Opening
Lintels (By Others)
Bird Screen
Sealed Cement
Mortar Pitched Away
from Unit Toward
Louver
1" Minimum
Lintels (By Others)
Bird Screen
Sealed Cement
Mortar Pitched
Away from Unit
Toward Louver
1" Minimum
Exterior
IM 1083-3