State Standard Systems - Manual (Page 15)

15
CAUTION
ALL PERSONS WORKING ON ROOFS SHOULD
HAVE SUCCESSFULLY COMPLETED A FALL SAFETY
COURSE AND SHOULD BE PROPERLY EQUIPPED
WITH THE APPROPRIATE SAFETY EQUIPMENT
AFTER COMPLETION OF THE COLLECTOR
MOUNTING AND PRIOR TO SYSTEM CHARGING THE
COLLECTORS MUST BE COVERED BY A BLANKET OR
OTHER MEANS TO AVOID SOLAR RADIATION FROM
HEATING THE COLLECTORS. THE SURFACES OF THE
COLLECTOR CAN BECOME EXTREMELY HOT AND
COULD POSE A BURN HAZARD.
WARNING
The most important structural consideration is to securely
anchor the solar collector and the mounting hardware to the
structural members of the roof with the stainless steel hardware
provided. The solar collector must be attached to the mounting
hardware as detailed in Figure 17.
Preserving the integrity of the roof membrane is the
most important roofing consideration. Ensure that all roof
penetrations required to plumb and mount the solar collector
are properly flashed and sealed in accordance with standard
roofing practices.
If the region is subject to hurricane conditions, additional
steps may be required to secure the collector and mounting
hardware to the structural members. In certain areas of the
country, local building codes may require collector wind load
testing or prescribe specific mounting procedures. Consult
your local building department.
Install the collectors as described in the Spanner Mounting
instructions.
spanner mountinG
Although there are other installation methods for mounting
solar collectors, it has been determined that the spanner
mounting method is the most suitable for this application.
Consult with your installer if other mounting means are
required for your installation.
1. After locating the mounting points from Figure 14 for
vertical collector mounting, Figure 15 for horizontal
collector mounting, and Table 4, layout the roof as
specified and drill 5/16” holes between the rafters
where indicated.
2. A 12” length of stainless steel 5/16” all-thread is then
inserted through the hole and a stainless steel nut, lock
washer, and flat washer secures the all-thread to the
mounting bracket. The all-thread should extend about
4” below the roof rafters.
3. Fabricate spanners, one for each mounting bracket,
using a 2” x 4” or similar lumber. Spanners must be
long enough to span at least two rafters. In the attic or
crawl space drill a 5/16” hole through each spanner and
insert the all-thread through it. Secure each spanner to
the rafters with decking or wood screws. See Figure 16.
4. Fabricate spacer blocks, one for each mounting bracket,
using a 2” x 4” or similar lumber the same width of the
rafter next to each all-thread. Place spacer blocks next
to the all-thread between the spanner and roof. Secure
each spacer block to the spanners with decking or
wood screws. Spacer blocks are necessary to avoid
deformation of the roof. See Figure 16.
5. With a stainless steel nut, lock washer and fender
washer secure the all-thread to each spanner. Tighten
down until the mounting bracket is tightly secured to
the roof (approx. 97 inch pounds). Be careful not to
overtighten and dish out the roof tiles underneath the
mounting bracket.
Repeat steps 2-5 for the remainder of the mounting
bracket locations.