31
- With partition and without opening which serve as passage of air to
adjoining room
Calculate refrigerant concentration
Total amount of replenishedrefrigerant
in refrigerant facility (kg)
Capacity of smallest room
whereindoor unit is installed (m
3
)
- In case the result of calculation exceeds the limiting concentration, perform
the same calculations by shifting to the second smallest, and the third small-
est rooms until at last the result is below the limiting concentration.
= Refrigerant concentration(kg/m
3
)
(R410A)
In case the concentration exceeds the limit
When the concentration exceeds the limit, change original plan or take
one of the countermeasures shown below:
• Countermeasure 1
Provide opening for ventilation.
Provide 0.15% or more opening to floor space both above and below
door, or provide opening without door.
• Countermeasure 2
Provide gas leak alarm linked with mechanical ventilator.
Reducing the outdoor refrigerant qty.
Outdoor unit
Indoor unit
Smallest
room
Countermeasure 2
Gas leak alarm
Mechanical ventilator
Countermeasure 1
Opening effective to ventilation
Indoor unit
Pay a special attention to the place, such as a basement, etc.
where refrigerant can stay, since refrigerant is heavier than air.
CAUTION
• Air conditioners should not be installed in areas where
corrosive gases, such as acid or alkaline gas, are produced.
• Do not install the product where it could be exposed to sea
wind (salty wind) directly. It can result corrosion on the
product. Corrosion, particularly on the condenser and
evaporator fins, could cause product malfunction or inefficient
performance.
• If outdoor unit is installed close to the seaside, it should avoid
direct exposure to the sea wind. Otherwise it needs additional
anticorrosion treatment on the heat exchanger.
INSTALLATION GUIDE AT THE
SEASIDE
!
ENGLISH
• Periodic ( more than once/year ) cleaning of the dust or salt
particles stuck on the heat exchanger by using water
In case, to install the outdoor unit on the seaside, set up a windbreak
not to be exposed to the sea wind.
- It should be strong enough like concrete to prevent the sea wind
from the sea.
- The height and width should be more than 150% of the outdoor unit.
- It should be keep more than 70 cm of space between outdoor unit
and the windbreak for easy air flow.
Select a well-drained place.
Sea wind
Windbreak
Selecting the location(Outdoor Unit)
If the outdoor unit is to be installed close to the seaside, direct expo-
sure to the sea wind should be avoided. Install the outdoor unit on the
opposite side of the sea wind direction.
Sea wind
Sea wind
