6. SYSTEM DESIGN
OUTDOOR UNIT INSTALLATION PRECAUTIONS12-2.
Note: The information listed below are general precautions. Some models also include items 
that do not apply.
PLACES WHERE USE IS PROHIBITED
Places where there is the danger of combustible gas leakage
Places where sulfur gas, chlorine gas, acid, alkali, or other matter which effects equipment is 
generated
Places not affected by heat radiation from other heat sources
Places where the air is not stagnant
Places where machinery which generates high frequencies is used
Ocean beaches and other areas where there is a lot of salt
Installation in vehicles, ships, and other conveyances
Factory, etc. where voltage fluctuations are large
POINTS TO REMEMBER WHEN INSTALLING
1) The set shall be installed at a place which can withstand the weight and vibration of the 
outdoor unit
2) To allow maintenance after refrigerant piping, drain piping, and electric wiring connection and 
installation, provide an installation service space.
*Installation service space is shown on " INSTALLATION PLACE ".
3) Be careful when installing the set at the following places.
[Installation precautions]
Contents Countermeasures (Reference)
When installed 
near adjacent 
houses
Perform installation work so that operating 
sound does not disturb the neighbors.
1) Install a soundproof barrier
2) Change the installation site
When there is 
the possibility 
of strong wind
1) If the outdoor unit is exposed to strong 
wind, capacity may drop, frost may form 
during heating, and operation may be 
stopped by high pressure rise. In addition, 
when a very strong wind blows, the fan 
may be damaged.
2) When a very strong wind blows, there is 
the possibility of the outdoor unit being 
toppled over if held only by foundation 
bolts
1) Install with the outlet side 
eep a sucient distance 
away from a facing wall or 
fence.
2) Make the outlet direction 
and wind direction 
perpendicular.
3) Fasten the outdoor unit 
using toppling prevention 
hardware (procured at the 
site).
When snow 
accumulates
If the outdoor unit is covered by accumulated 
snow, it may not be able to operate.
1) Make the foundation as 
high as possible.
2) Perform snow prevention 
work.
When 
installing the 
inverter type
It may generate noise in TV sets, stereos and 
PCs.
1) The inverter type should 
beinstaed at a sucient 
distance from these 
equipments.
- (06 - 154) -
SYSTEM
DESIGN
SYSTEM
DESIGN