4
English
(3) When installing the unit in a place frequently exposed to snow,
pay special attention to the following:
• Install the outdoor unit on a stand (field supply), so that the bottom
frame is more than 20 in. (500 mm) higher than the expected snow
fall to prevent it from being covered by snow.
• Attach a snow hood (field supply) and a snow vizor (field supply).
• Avoid installation at the place where a snowdrift is generated.
• Further, perform the following countermeasures, since there is risk
that the drain water produced at the defrost operation freezes.
• Install the outdoor unit so that its bottom place level has a sufficient
height from foundation level, so that ice does not grow at the lower
surface of the bottom place of the outdoor unit. (Recommended
clearance: 20 in. (500 mm) or more)
• In areas where the outside air temperature drops below 32°F (0°C)
for more than 12 hours continuously, install a drain-pan heater
(optional accessory) on the bottom frame to prevent the drain from
freezing.
• An optional drain pan heater is available when the unit is installed
in a climate where the drain may freeze.
• The installer should use their local knowledge to determine if this
accessory is necessary to prevent the drain from freezing.
• Do not use a concentrated drain plug (field supply).
(If a drain plug and/or drain pipe are/is used, there is a risk of freez-
ing.)
• If there is a problem with drain dripping from the bottom frame
drain, set up a roof (field supply) below the outdoor unit, or enact
other countermeasures.
• Remove the rear inlet grille to prevent snow from accumulating on
the rear fins.
(4)
When there is possibility of short-circuit depending on the ambient
situation, use the wind direction adjusting plate (optional acces-
sory).
(5)
The refrigerant gas (R410A) is a safe, non-toxic and non-flammable
gas, but if it leaks into the room, the concentration may exceed tol-
erance levels, especially in small rooms, so steps need to be taken
to prevent refrigerant leakage. See the equipment design reference
for details.
(6)
Inverter-type air conditioners sometimes cause static in other elec-
trical appliances.
When selecting an installation location, make sure the air condi-
tioner and all wiring are sufficiently far away from radios, computers,
stereos, and other appliances, as shown in figure 4.
Particularly for locations with weak reception, ensure there is a dis-
tance of at least 9.8ft. (3 m) for indoor remote controllers, place
power supply wiring and transmission wiring in conduits, and
ground the conduits. Use non-shielded wire for transmission wiring.
(Refer to figure 4)
1.
Indoor unit
2.
Fuse/Breaker
3.
Remote controller
4.
Personal computer or radio
(7)
Space needed for installation
<
Precautions when installing units in series
>
• The direction for interunit piping is either forward or down when
installing units in series, as shown in the figure(5~10).
• If the piping is brought out from the back, the outdoor unit will
require at least 10in. from its right side.
(All figures represent millimeters.)
(7)-1 IN CASE OBSTACLES EXIST ONLY IN FRONT OF THE AIR
INLET
When nothing is obstructing the top
1.
Installation of single unit
• In case obstacles exist only in front of the air inlet
(Refer to figure 5-[1])
• In case obstacles exist in front of the air inlet and on both sides of
the unit
(Refer to figure 5-[2])
2.
In case of installing multiple units (2 units or more) in lateral connec-
tion per row
• In case obstacles exist in front of the air inlet and on both sides of
the unit
(Refer to figure 5-[3])
When something is obstructing the top
1.
Installation of single unit
• In case obstacles exist only in front of the air inlet
(Refer to figure 6-[1])
• In case obstacles exist in front of the air inlet and on both sides of
the unit
(Refer to figure 6-[2])
2.
In case of installing multiple units (2 units or more) in lateral connec-
tion per row
• In case obstacles exist in front of the air inlet and on both sides of
the unit
(Refer to figure 6-[3])
(7)-2 IN CASE OBSTACLES EXIST IN FRONT OF THE OUTLET
SIDE
When nothing is obstructing the top
1.
Installation of single unit
(Refer to figure 7-[1])
2.
In case of installing multiple units (2 units or more) in lateral connec-
tion per row
(Refer to figure 7-[2])
When something is obstructing the top
1.
Installation of single unit
(Refer to figure 7-[3])
2.
In case of installing multiple units (2 units or more) in lateral connec-
tion per row
(Refer to figure 7-[4])
(7)-3 IN CASE OBSTACLES EXIST IN FRONT OF BOTH THE AIR
INLET AND OUTLET SIDES
Pattern 1:
Where obstacle in front of the air outlet is higher than the
unit.
(There is no height limit for obstructions on the intake side.)
When nothing is obstructing the top
1.
Installation of single unit
(Refer to figure 8-[1])
2.
In case of installing multiple units (2 units or more) in lateral connec-
tion per row
(Refer to figure 8-[2])
When something is obstructing the top
1.
Installation of single unit
(Refer to figure 8-[3])
Relation of dimensions of H, A, and L are shown in the table below.
inch(mm)
Note
Get the lower part of the frame sealed so that air from the outlet does
not bypass.
L
A
L
H
0 < L
1/2H
30(750)
1/2H < L
H
40(1000)
H < L
Set the frame to be L
H
01_EN_3P591321-1B.fm 4 ページ ２０１９年１２月２４日 火曜日 午後５時１９分
