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that all roof penetrations required to plumb and mount
the solar collector are properly ashed and sealed in
accordance with standard roong practices.
4.3.5 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 specic
mounting procedures. Consult your local building
department.
4.4 Collector Loop Pipe Insulation
The collector loop cold supply and hot return lines
must be well insulated with a high quality exible
closed cell insulation to minimize heat loss. The wall
thickness of the pipe insulation should not be less than
3/4". A 1" wall thickness is required in all areas prone
to annual hard freeze conditions. When it comes to pipe
insulation the rule is simple: thicker is better. Use 3/4"
Armaex (or similar) exible elastomeric closed cell
thermal insulation.
To the extent possible, slide the insulation material
over the pipe without cutting or taping. All butt joints
must be sealed with contact adhesive. The use of
rigid polyethylene pipe insulation is prohibited. The
temperatures generated by your collector in the summer
months or under stagnation conditions can melt this
type of material.
fig.7
TILE ROOF MOUNTING