Hydro Unit
Installation Manual
– 6 –
5 Example of Hydro Unit installation
■ Example of installation for cooling and heating
• When the cooling mode is required, a 2-way valve must be installed to isolate the radiator.
A 2-way valve shoud be installed to isolate the under-floor heating if necessary.
• If the minimum flow rate cannot be secured, install a buffer tank and pump.
Please refer to page 11 for how to check the flow rate.
CAUTION
Please pay attention to the cooling temperature settings, as we cannot guarantee the damages caused by the air
humidity condensation on the radiator or under-floor heating circuit and pipeline surfaces.
11-EN
12-EN
▼Fig.5-01
M
M
M
Fan Coil Units
(Cooling or Heating)
Isolating
Ball
Valves
Radiators (Heating Only)
[2-Way Valve Control]
Indirect Sanitary
Hot Water Cylinder
Drain Cock for water
Charge and Drain
Strainer (40 mesh / 0.4 mm)
Use it when do not
operate cooling.
Alternative to Radiators
Under-floor Heating
(Heating Only)
[2-Way Valve Control]
Diverting 3-Way
Valve for
Sanitary Hot
Water Cylinder
Use the
2-way valve
to isolate
the heating
circuit when
in cooling
mode.
2-Way
Valve
2-Way
Valve
TTW
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