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When the water pipes are connected. It must be
tightened the nut with two wrench.
Otherwise pipes can be deformed.
* The feature may be vary according to the type of
model.
WARNING
!
Installing shut-off valve
• While assembling two shut-off valves, pop sound will be heard when valve is open or
close by rotating handles. It is normal condition because the sound is due to leakage of
charged nitrogen gas inside the valve. The nitrogen gas is applied to secure quality
assurance.
• Before starting water charging, these two shut-off valves should be assembled with
water inlet and outlet pipe of the unit.
Water condensation on the floor
While cooling operation, it is very important to keep leaving water temperature higher than
16 °C. Otherwise, dew condensation can be occurred on the floor.
If floor is in humid environment, do not set leaving water temperature below 18 °C.
Water condensation on the radiator
While cooling operation, cold water may not flow to the radiator. If cold water enters to the
radiator, dew generation on the surface of the radiator can be occurred.
Pipe Insulation
Purpose of water pipe insulation is :
- To prevent heat loss to external environment.
- To prevent dew generation on the surface of the pipe in cooling operation.
- To prevent pipe breakage by freeze at winter season.
- Minimum insulation thickness recommendations ensure correct operation of the product, but
local regulations may vary and must be followed.
※ Insulation must be done at exterior water pipe, valve and other fittings between product and
building.
Water Piping length (m)
<20
20~30
30~40
40~50
* λ = 0.04 W/mk (Thermal conductivity of pipe insulation)
INSTALLATION
Minimum insulation Thickness(mm)
20
30
40
50
65
Water Out
Water In
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