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Pipe work (Continued)
Pressure relief valve
A pressure relief valve is integrated on heater vessel of hydro unit and shall work in abnormal condition for
protecting the hydro unit.
The pressure relief valve will operate releasing the pressure by flowing out some water through
the drain hose.
Make certain that the discharged water out of drain pan can not contact any electrical parts.
Piping insulation
The complete water circuit, including all piping must be insulated to prevent condensation forming on the
surface of the pipe and heat loss to external environment.
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