Toshiba Estia HWS-803XWHM3-E Manuel D'installation page 38

Hydro Unit
Settings for 2-zone temperature control
• Procure a motorized mixing valve (refer to "Control
parts specifications" on page 21 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 30.)
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.
▼ Fig. 8-03
M
Direct Buffer tank for
Under Floor Heating
▼ Fig. 8-04
Insulation tube (minimum 1 mm)
2 Zone hot water supply pipe
37-EN
TFI
Zone 2
Under-floor Heating
(2-Way Valve Control)
TFI Sensor
Tying up
More than 4 mm
Setting for second remote controler
• Prepare the optional second remote controller.
• Connect the cable to terminals TB07 A,B of theHydro
unit and remote controller.
• Set dip switch1 on the second remote controller
board to ON.
• <Room thermo control>
Press long the TEST
switches on the remote controller to
change the Hydro Unit function code, and change
address 40 to 1,and then press the SET
to enable the function.
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Installation Manual
+ SET + SELECT
button