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59
ENGLISH
Calculate minimum room capacity
Calculate room capacity by regarding a portion as one room or the
smaller room.
- With partition and with opening
which serve as passage of air to
adjoining room
- Without partition
Outdoor unit
Indoor unit
Outdoor unit
Indoor unit
Opening
Partition
In the case of opening
without door, or 0.15 %
or more openings
(to floor space) both
above and below door)
- 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(lbs)]
Volume of smallest room
whereindoor unit is installed
[m
3
(ft
3
)]
- In case the result of calculation exceeds the concentration limit, perform the
same calculations by shifting to the second smallest, and the third smallest
rooms until at last the result is below the concentration limit.
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 size of opening to floor space both above
and below door, or provide opening without door.
• Countermeasure 2
Provide gas leak alarm linked with mechanical ventilator.
• Countermeasure 3
Reducing the outdoor refrigerant qty by dividing into smaller
separate system.
= Maximum concentration limit
[kg/m
3
(lbs/ft
3
)]
(R410A)
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.
INSTALLATION GUIDE AT THE
SEASIDE
• Periodic (1 times per 6 months) cleaning of the dust or salt
particles stuck on the heat exchanger Is necessary by using
clean 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 kept more than 70 cm (2.3 ft) of distance between
outdoor unit and the windbreak for smooth 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
exposure to the sea wind should be avoided. Install the outdoor unit on
the opposite side of the sea wind direction.
Sea wind
Sea wind
• 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 operation.
• 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.
CAUTION
!
1,MFL68980308,영영 2018. 11. 13. 영영 3:24 Page 59
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