Toshiba ESTIA HWS-802XWHM3-E Manuel D'installation page 38

Hydro Unit
Settings by Purpose
Settings when hot water supply function is not used
• When the hot water supply function is not used, set DIP SW12-1 on the Hydro Unit board to ON. (Refer to
page 32.)
Setting for cooling
• For Hydro Units that do not perform cooling (those for floor heating, etc.), procure a motorized 2-way valve (for
cooling) (refer to "Control parts specifications" on page 23 for the details.) locally and attach it to the water pipe
that is not used for cooling. Connect the valve cables to terminals TB05 (3) and (4) of the Hydro Unit.
• Press long the TEST
Hydro Unit function code, and change address 02 to 0, and then press the SET
Press the TEST
• Stick the optional insulator for cooling to the bottom of the Hydro Unit.
Settings for hot water supply
• Prepare the optional hot water cylinder.
• Procure a motorized 3-way valve (refer to "Control parts specifications" on page 23 for the details.) locally and
perform piping. Connect the valve cables to terminals TB05 (7), (8) and (9) of the Hydro Unit.
• Set DIP SW12-1 on the Hydro Unit board to OFF. (Refer to page 32.)
• Connect the power supply unit for the hot water cylinder heater to terminals TB03 L and N of the Hydro Unit.
• Connect cables between the Hydro Unit and the hot water cylinder as follows:
Hydro Unit terminals TB03 (1), (2), and earth — Hot water cylinder (1), (2), and earth
Settings for 2-zone temperature control
• Procure a motorized mixing valve (refer to "Control parts specifications" on page 23 for the details.) locally and
perform piping. Connect the valve cables to terminals TB04 (1), (2), (3) and (4) of the Hydro Unit.
• Procure a buffer tank locally.
• Procure a water pump locally, and connect its cables to terminals TB05 (1) and (2) of the Hydro Unit.
To inhibit interlocking the water pump with the internal pump of the Hydro Unit, set DIP SW10-3 on the Hydro
Unit board to OFF.
• Set DIP SW12-3 on the Hydro Unit board to ON. (Refer to page 32.)
Attach the temperature sensor (TFI) connected to terminals TB06 C and D of the Hydro Unit near the hot water
inlet of the Hydro Unit.
• Fix TFI sensor on the room heating supply pipe by using the connector procured in locally.
• Cover the cables with insulation tube (minimum 1 mm) or conduit so that the user cannot touch them directly.
• Cover the TFI sensor's cables and sensor with insulation tube (minimum 1 mm) shown in the diagram on the
right.
37-EN
+ SET + SELECT
button to exit the setting mode.
TB06 A, B, and earth — Hot water cylinder A, B, and earth
switches on the remote controller to change the
– 38 –
Installation Manual
button to enable the function.