Alternate Energy Technologies EAGLESUN, Инструкция по установке, эксплуатации и обслуживанию

Страница: 12 / 33

DXR Drainback
Page 12
ATTACHMENT OPTIONS
The collector shall be installed on a mount capable of maintaining tilt and azimuth to design conditions. There are
three acceptable ways to secure the collector mounting brackets to the roof. Of these three methods, lag bolting is
preferred since the wood swells around the lag so the hardware does not loosen over time.
1. Spanner Mounting
2. J-Bolt Mounting
3. Lag Bolt Mounting (preferred)
SPANNER MOUNTING
In spanner mounting, after the brackets are positioned
on the chalk line, a 3/8” hole is drilled between the
rafters. An aluminum flashing is positioned over the
hole where the top of the flashing is extended up under
the shingle above the 3/8” hole and extends down over
it. Caulk is applied between the flashing and the roof.
The bracket is then positioned over the 3/8” hole using
sealant between the bracket and the flashing. A piece of
3/8” all-thread is then inserted through the hole. A
washer and nut secures the all-thread to the bracket (be
sure the seal underneath the washer and on top of the
nut). The all-thread rod should extend about 4” below
the roof. Drill a 3/8” hole in a 2 x 2 angle and insert the
all-thread rod through it. The 2 x 2 angle should span 2
rafters. With a washer and double bolt secure the all-
thread to the 2 x 2 angle. Tighten down until the bracket
is tightly secured to the roof. Be careful not to over-tighten and bell out the roof underneath the bracket.
NOTES: Spacer Blocks
•
Spacer blocks shall be installed within 1" of the thru-bolt. When thru-bolt is within 2" of a rafter, only one
spacer block will be required on the opposite side of the bolt, away from the rafter. Two spacer blocks are
required when the bolt is more than 2" from the rafter.
•
When the mounting provisions of adjacent collectors are installed side by side and the thru-bolts are 1 1/2"
or more apart, it will be necessary to have at least one spacer block (or rafter) between bolts.
•
Sealant is required between mounting block and shingles/sheathing. Bolt holes shall be sealed to prevent
moisture penetration.
J-BOLT MOUNTING
J-bolt mounting is done very similar to lag screw
mounting except instead of drilling into the center of a
rafter a hole must be drilled directly beside a rafter.
The size of the hole must be slightly larger than the bolt
diameter. This is more easily accomplished if the attic
person would drill a pilot hole through the roof along
side the chosen rafter. Fit the bolt through the
mounting brackets and insert the bolt (J side first)
through the hole in the roof. Work the J underneath the
rafter. Pull the J-bolt snug against the rafter before
tightening the nut. Use double nuts or lock-washers to
securely fasten the mounting bracket to the J-bolt.