Solahart 151J, Руководство пользователя

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HERE'S HOW IT WORKS
Solahart thermosiphon solar water heaters are available in two series:
•
Open circuit models – with either an L, LF or LX tank
•
Closed circuit models – with either a J or F tank
An open circuit series system does not have freeze protection.
The system is not suitable for installation in areas subject to
frost or freeze conditions, nor areas with poor water chemistry.
The system has NO WARRANTY for freeze damage or damage
caused by poor water chemistry.
A closed circuit series system is suitable for installation in areas
subject to frost or freeze conditions, or areas with poor water
chemistry. This system has NO WARRANTY for freeze
damage if non Solahart approved closed circuit fluid has been
used or if the closed circuit fluid has been incorrectly mixed.
Refer to
“Terms of the Solahart Warranty”
on page 4 and
“Water Supplies”
on page 16.
This water heater is designed to be installed as an electric boosted solar water heater with its booster heating unit connected
to a power supply, however it may be installed with an in-series continuous flow or storage booster water heater.
Solar Operation
The solar water heater uses the thermosiphon principle, without the need for a pump, circulator or sensors. It works on the
simple scientific fact that hot fluid rises. The solar collector’s low-iron content solar glass allows more solar energy from
the sun to pass through and be used to heat the collector’s absorber plate than conventional glass. This solar energy heats
the fluid in the absorber plate which is then transferred to the water in the storage tank.
OPEN CIRCUIT SERIES
An open circuit system has a collector circuit which is directly
connected to the potable water in the solar storage tank by copper
pipe work. As the water in the solar collector gains the solar energy
from the absorber, the increase in temperature causes the water to
rise through the collector and the solar hot pipe into the solar
storage tank.
As the heated water enters the storage tank, cooler water from the
bottom of the solar storage tank flows down the solar cold pipe into
the solar collectors to be heated by the solar energy. This process
continues while solar energy is available and the water in the solar
storage tank requires heating.
CLOSED CIRCUIT SERIES
A closed circuit solar water heater has a heat exchanger jacket wrapped around the inner cylinder as part of the solar
storage tank design. The heat exchanger and solar collectors are connected by copper pipe work and form a closed circuit
which is filled with closed circuit fluid. The closed circuit fluid is a solution of Hartgard concentrate and water. Hartgard is
a blue, non-toxic food grade propylene glycol heat transfer fluid. The Hartgard concentrate is used to lower the freezing
temperature of the closed circuit fluid providing protection against freezing. The closed circuit also provides protection to
the solar collectors and solar pipe work against harsh water chemistry.
As the Hartgard fluid in the solar collector gains the solar energy
from the absorber, the increase in temperature causes the fluid to
rise through the fluid ways in the collector into the solar hot pipe
and up into the heat exchanger jacket around the inner cylinder,
where it transfers its heat into the water in the solar storage tank.
As the heated Hartgard fluid enters the heat exchanger, the cooler
Hartgard fluid from the bottom of the heat exchanger flows down
the solar cold pipe into the solar collectors to be heated by the solar
energy. This process continues while solar energy is available and
the water in the solar storage tank requires heating.
open circuit series operation
closed circuit series operation