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

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DXR Drainback
Page 4
All solar systems will have a backup source of heating. The backup source for this system is your electric water
heater. The backup source is used because on some days, when it is very cloudy, the solar contribution will be very
small. On days when there is plenty of sun, and the sun is doing the work of heating the water
automatically, the
resulting high water temperature in the tank will keep the internal hot water heater thermostat from turning on the
gas or electric heat, thus saving fuel and money.
DXR DRAINBACK SYSTEM COMPONENTS
This system is comprised to the following components:
•
Solar collector(s)
•
Drainback reservoir with heat exchanger and sight glass
•
Water heater ( existing )
•
Circulation pumps (2x)
•
Differential temperature controller
•
Pressure relief valve
THE SOLAR COLLECTORS
The collector array consists of solar collectors of sufficient size to meet the design criteria for your household needs
and geographic area, plus a set of 4 mounting brackets for each solar collector. All collectors specified in these
systems are SRCC certified, manufactured by Alternate Energy Technologies, of the AE or MSC series, using
Thermafin absorbers with Selective Crystal Clear Black coating. The Crystal Clear Black surface has been proven
to withstand very high temperatures for long periods of time and will not flake or chip. It is a revolutionary coating,
which is actually a crystalline structure that is "grown" on the surface of the copper plating material.
Crystal Clear Black coating is a leading edge technology that allows the maximum amount of solar energy to be
absorbed at the lowest light level and virtually eliminates the amount of energy radiated to the sky.
The absorber plate within the collector is made of Thermafin risers. Manufactured using a high frequency forge
welded molecular bond between copper tube and copper fin to form the risers that make up the absorber plate.
Thermafin is designed to conduct the maximum amount of heat absorbed to the fluid that passes through the tube
and returns to the water heater. Unlike other methods, that solder or braze the tube and fin, Thermafin has only
copper to conduct the heat and is therefore the most efficient and durable product available.
The glass on the solar collector is a low iron tempered glass of exceptional clarity. This means that sunlight coming
into the collector loses very little energy and transforms almost all of the light into heat. The tempered glass is very
strong and resists damage that ordinary window glass could never withstand. A high-density foam material is used
to provide insulation and minimize heat loss in cold weather. All copper piping is externally sealed with high
temperature silicone grommets. All of this ensures that the maximum heat energy is transferred to the water, which
is stored for use as needed.
The frame of the collector consists of a proprietary aluminum extrusion, with an integral quick lock-mounting rail
for ease of installation with our patented "Quick lock" mounting hardware. The mounting brackets come in a set of 4
per solar panel, and all hardware is included except for the actual bolt used to attach to the roof or mounting surface.
All fasteners and bolts are made of high quality and long lasting stainless steel.
DRAINBACK RESERVOIR
The drainback reservoir is a very high quality, well-insulated, hot water storage/transfer device. The drainback
reservoir incorporates an internal, finned, coiled copper heat exchanger and the tank is typically mounted adjacent to
the water heater.
Potable water, circulating from the water heater, never comes in contact with the fluid in the collectors. The heated
water, from the solar collectors, is directed into the drainback reservoir surrounding heat exchanger. The heat
exchanger collects heat from the surrounding fluid and transfers it to the potable water in the water heater.