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7. HYDRO UNIT INSTALLATION MANUAL
Engineering Data Book
7
9 TEST RUN
Use operation buttons usually to conduct a test run.
If the outside air temperature or water temperature is outside the setting value range, press the TEST button
on the remote controller and then start a test run. Since the protection setting is disabled in the TEST mode, do not
continue a test run longer than 10 minutes.
• Press the TEST button on the remote controller. An indication “TEST” appears on the remote controller.
• Press the ZONE1, 2 button and select “heating” with the OPERATE MODE button.
The pump is activated in 30 seconds.
If air is not released completely, the flow rate switch is activated to stop operation. Release air again according
to the piping procedure.
Little air bite is discharged from the purge valve.
• Check that the air bite sound disappears.
• Check that the hydraulic pressure has become the predetermined pressure 0.1 to 0.2 MPa (1 to 2 bar). If the
hydraulic pressure is insufficient, replenish water.
• Heating operation starts. Check that the hydro unit starts heating.
• Press the OPERATE MODE button and select “cooling.”
• Cooling operation starts. Check that the hydro unit starts cooling and that the floor heating system is not cooled.
• Press the ZONE1, 2 button to stop operation.
• Press the HOT WATER button to start hot water supply operation.
• Check that there is no air bite.
• Check that hot water is present at the connection port of the hot water cylinder.
• Press the HOT WATER button to stop the hot water supply operation.
• Press the TEST button to exit the test mode.
▼ Fig. 8-03 ▼ Fig. 8-04
Insulation tube (minimum 1 mm)
2 Zone hot water supply pipe
More than 4 mm
M
TFI
Direct Buffer tank for
Under Floor Heating
Zone 2
Under-floor Heating
(2-Way Valve Control)
TFI Sensor
Tying up
38-EN
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