Alternate Energy Technologies AE-Series, Инструкция по установке, эксплуатации и обслуживанию

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Figure 7
Collector Loop Pipe Insulation
The collector loop cold supply and hot return lines must be well insulated with a high quality flexible 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. The specified insulation material is Rubatex Insul-Tube 180 or equal.
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.
Any above ground exterior pipe insulation is subject to ultra-violet (UV) degradation and must be wrapped with
foil tape or painted with two coats of high quality water-based acrylic resin coating as supplied by the insulation
manufacturer. Rubatex UV Protective Coating or its equal is the required coating material.
Collector Sensor Placement
(When Differential Controller is used)
The collector sensor must be located on the hot water return line as close to the collector as possible. Sensors
are typically accurate to +/- 1/2°F if properly installed and weatherized. To maximize sensor accuracy, attach the
flanged portion of the sensor to the solar collector header pipe, as close as possible to the collector outlet, with
a stainless steel hose clamp. Wire nuts used to connect the sensor and low voltage wiring shall be all plastic,
sealed with silicone and thoroughly wrapped in electrician's tape.