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Installation and operation instructions
Separation station WHI sol/heat 20 #1 / 40 #1; Separation station WHI sol/aqua 20 #1 / 40 #1
3 Product description
83514202
▪
1/2014-06
▪
Ext. PAW
10-36
3.1
Function
To protect the solar circuit of a thermal solar system from frost, it is filled with a
propylene glycol/water mixture. The heat produced by solar energy is required in the
heating circuit or else in the potable water mains.
In small installations, this function is performed in most cases by a plain tube heat
exchanger integrated into the storage tank. When the collector fields become larger,
the transfer capacity of these heat exchangers is no longer sufficient.
In large systems, the function of separation stations is to transmit the heat energy
collected in the collector to the heating water circuit or to the potable water mains.
The centrepiece of these modules is a plate heat exchanger, whose cross-flow operating
mode allows excellent heat transfer.
The operating conditions in the heat exchanger vary, due to variations in radiation, buffer
temperatures and different system requirements.
For optimum operation of the overall system, the flow rates in the heat exchanger must
be adapted to the relevant control target and current situation.
To this end, high-efficiency pumps, which have an extremely wide control range, are
used in the WHI sol modules. This allows the controller to adapt the pumps optimally to
the momentarily required flow rate within a very broad application range.
Moreover, the pumps used save far more than 50% of the electrical drive energy
compared with customary asynchronous pumps.
The controller is delivered preset, assembled and wired, thus ensuring easy adjustment
to the real system.
The use of flow rate sensors in the WHI sol modules moreover offers an integrated heat
quantity measurement.
The WHI sol modules are equipped with safety, locking and flushing valves and fittings,
allowing the solar system to be commissioned safely and quickly.
The WHI sol/heat modules are intended for operation in heating installations.
In contrast, the WHI sol/aqua modules are used for separating the solar circuit from the
potable water mains.
Содержание WHI sol/aqua 20 1
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