Tjernlund PAI-3,4,5,6,7 Commercial Combustion Air In-Forcer 8504036 Rev A 05/01 - Manual (Page 7)

WALL MOUNT INSTALLATION OF INTAKE HOOD
1. Attach take-off collar to Intake Hood base by bending over the tabs of the collar.
2. Verify that wall penetration will not come in contact with concealed wiring or plumbing. Cut a circular or square opening through
the wall. (PAI-3 Rough-In: 6 1/2”, PAI-4 Rough-In: 8 1/2” , PAI-5/6 Rough-In: 10 1/2”, PAI-7 Rough-In: 12 1/2”)
3. Secure section of galvanized pipe to Intake Hood collar with sheet metal screws.
4. Insert Intake Hood with pipe attached through opening and mark location of mounting holes, PAI-3/4 (4), PAI-5/6/7 (8), (See Diag. B).
Drill 1/4” diameter holes at marked locations, insert plastic wall anchors (for masonry wall).
5. Apply a bead of caulk around perimeter of Intake Hood Base, (See Diagram C). Insert Intake Hood through opening, align
mounting holes and secure to wall with #10 x 1 1/4” screws provided, PAI-3/4 (4), PAI-5/6/7 (8).
6. Secure Intake Hood Cover using #8 x 3/8” sheet metal screws, PAI-3/4 (4), PAI-5/6 (8), PAI-7 (20), (See Diagram D).
7. Apply a bead of caulk to the rear flange of the Rain Shield and position Rain Shield on the Intake Hood making sure it is adjusted
flush against the wall. Use adjustment slot and pierce through hood dimples with (2) #8 x 3/8” sheet metal screws, (See Diagram E).
INS
MODEL PAI-7 ONLY
When installing PAI-7 Hood apply Rain Shield with caulking over middle adjustment slot of rain shield. Install leak proofing tab
between Rain Shield and Intake Hood, (See Diagram D).
8. Install Intake Hood backing plate on interior wall with provided #10 x 1 1/4” screws and wall anchors, PAI-3/4 (4), PAI-5/6/7 (8).
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DIAGRAM D
DIAGRAM B
DIAGRAM E
DIAGRAM C
DIAGRAM A