Hydro Box
20
⑧
If you put the unit out of use for a long period and cut off the power, please make sure to
drain the water thoroughly out of the hydro box and floor heating pipe, in order to prevent
the system from freezing. (For the method of discharging the circulating water inside the
hydro box, please refer to section “Water discharge of hydro box”)
4.2.5 Requirements for Installation of Water System
(1) The cold water inlet of pressure water tank shall be connected to tap water pipe, and the
hot water outlet shall be connected to the water terminal.
(2) The tap water inlet shall be connected with one-way valve, filter and relief valve.
(3) For easy repair, manual cutoff valve shall be installed at water inlet or outlet.
(4) Exhaust valve shall be installed at the highest position of water pipe.
(5) To avoid waiting too long when using hot water, please add hot water return line if the
water terminals are dispersed and the water tank is far from such terminals.
(6) Please select an expansion tank of proper size according to the total water volume of the
closed type circulating water system installed in the project and the relevant selection
specifications of the expansion tank.
Notes:
①
The return water channel can be installed by referring to the following schematic
Fig.4.14.
②
One return water temperature sensor is provided in the packaged accessories. Connect
the terminal of the temperature sensor to the main board AP1-CN49 of the control box
during installation.
③
The control box of the hydro box only provides the control signal of the return water pump.
Please make sure that the return water pump is powered by an external power source
and connected to XT1-5 and XT1-6 of the control box wiring board through the relay
.
Fig.4.14
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