Chapter Ⅱ Installation（4. Design of Water System）
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⑥ When user is using water, the user water supply water pump will be controlled by the by
electric contact manometer or water flow switch (equipped by project). Meanwhile, they will send
the power-off command to backwater solenoid valve.
⑦ Control of auxiliary electric heating: when installing the unit, it is suggested to choose
auxiliary electric heating parts to satisfy the water output insufficiency of unit in winter. Model
selection of auxiliary electric heater please refer to the following instructions, it should be installed
in parallel with the main unit. After installing, when the main unit is steadily operated (6 minutes
later after started up the unit), manually adjust the cut-off valve to adjust the water output
temperature of auxiliary electric heater.
⑧ The unit needs to have heat insulation protection for preventing heat loss of hot water
pipelines. When the ambient temperature is below 0℃ in winter, all the water pipelines and
valves should have heat insulation protection. The common thermal insulation materials are PEF,
glass cotton, rubber insulation sponge, etc. The thickness of heat insulating layer should be
≥30mm.
4.3 Design and Installation of Water Tank
4.3.1 Manufacture of water tank
Installation Diagram of Water Tank
The installation of water tank is mainly for the matching between water tank and pipelines
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