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2.4 CONNECTION OF INDIRECT TANK TO HOT WATER SYSTEM
It is recommended that heating water inlet and outlet are provided with shutoff valves ( in
case the tank has to be demounted). Valves should be as close as possible to the tank to
minimise heat losses.
The heating circuit shall be connected to marked tank exchanger inputs and outputs, and
bleeder valve installed at the highest point. It is necessary to install a filter into the circuit in
order to protect pumps, three-way valve, backflow flaps and the exchanger from
sedimentation. It is recommended to flush the heating circuit before the assembly. All wiring
connections must be properly insulated from heat. If the system works with priority heating
of HSW using a three-way valve, always follow the installation instructions of the three-way
valve's manufacturer.
To connect the tank to water supply system, hot water heating system, power supply and,
after testing the safety valve (accordingly with the manual attached to the valve), the tank
can be put in operation. Before opening the power supply, the tank must be filled with
water. The process of first heating must be executed by licensed professional who has to
check it. Both the hot water outlet pipe and safety armature parts may be hot.
Example of connecting the tank to water and heating system
Figure 7
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