Loren Cook HVAD 2020, Installation & Operation Manual

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19
PURLIN MOUNT PURLIN MOUNT
1. From an accessible landmark, on the first purlin, measure to the
centre line of the bottom centered hole of the 3 mounting holes.
2. Drill the centered bottom mounting hole with a ½” drill bit, so
that there will be a minimum of ¾” (19mm) between the top of
the (EN562X1152) mounting bracket deck and the bottom of the
purlin.
3. Place the two mounting bracket faces together with each bracket
bottom deck face outward.
4. Before fastening the mounting brackets install four ¼” x 1
1/4” long hex cap screws (EN823X6031) with ¼” flat washers