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section four
Collector Assembly
Flush Roof Mounting
Measure the Installation Area
Once the collector location is determined, lay out the 4 mounting feet of each collector within the
dimensions listed below:
OVSOL 5 8 tube collector: 'A' = 16 to 25 inches; 'B' = 63 to 80 inches
OVSOL 5 16 tube collector: 'A' = 48 to 66 inches; 'B' = 63 to 80 inches
center manifold on collector feet spacing
A
B
8 tube: 16" - 25"
63" - 80"
16 tube: 48" - 66"
Flush Mounting on Asphalt Shingles
Roof Mounting Kit ORMK-S
Mounting of Collector Feet
Collector feet may be lag bolted into the roof rafters. Since most roof trusses or rafters are built on 16-inch
centers, locate the comers so that the 'A' dimension falls on the 16-inch center. To locate the nearest rafters,
use a stud finder. Once the rafter is located, drill a small diameter pilot hole to verify the rafter's center line.
Be sure to lift the upper shingle and predrill into the underlying (covered) row to prevent water leaks. Lift
shingles carefully to avoid tearing. Always seal pilot holes not being used.
Mark the pilot hole for the center line of the roof rafter or truss. Next, pre-drill two holes for each collector foot
into the center line of the rafter using a drill bit smaller in diameter than the lag bolt supplied. Apply a
generous amount of polyurethane sealant around and within the predrilled hole. Screw the collector feet in
place. Avoid over-tightening and stripping the lag bolts. You may apply a small amount of sealant to the lag
bolt heads to prevent water leakage. The important thing is to locate the collector feet atop roof joists so that
the weight of the collector is supported. Select rafters so that two tubes will overhang to the right and left for
an 8-tube module. For a 16-tube module, you may allow up to four tubes to overhang to the left and right of
the rafters. The overhangs are necessary for better weight distribution.
7
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