Blueridge BM18MFCC Installation Manual - Page 10

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3. Using a 2.5" hole saw drill, drill a hole in the

wall. Make sure that the hole is drilled at a

slight downward angle, so that the outdoor

end of the hole is lower than the indoor end

by about 0.5". This will ensure proper water

drainage (See Fig. 5.4). Place the protective

wall cuff in the hole. This protects the edges

of the hole and will help seal it once you

finish installation.

Outdoor

≈ 0.5 inch

 Page 10 

Wall

Indoor

Fig. 5.4

NOTE: When drilling the hole, make sure to

avoid wires, plumbing, and other sensitive

components.

4. Pass the drain hose through the wall

hole. Make sure the water drains to a

safe location where it will not cause water

damage or a slipping hazard.

NOTE: The drainpipe outlet should be at

least 1.9" above the ground. If it touches the

ground, the unit may become blocked and

malfunction. If you discharge the water directly

into a sewer, make sure that the drain has a U

or S pipe to catch odors that might otherwise

come back into the house.

Revised 5/14/2020