Drazice OKC 250 NTRR Instrukcja obsługi i instalacji - Strona 7
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7.
CONNECTION OF INDIRECT HEATER TO HOT WATER HEATING SYSTEM
(Fig. Examples of connection... and Fig. 1)
It is recommended to install stop valves on the heating water inlet and outlet (for possible dismantling of the heater). The
valves have to be as close to the heater as possible to avoid higher thermal losses.
The heating circuit is connected to marked inputs and outputs of the heater exchanger; the deaerating valve is mounted in
the highest place. It is necessary to install a filter into the circuit in order to protect the pumps, the three-way valve, and
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.
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