3
3. Installation diagram
2.1. Outdoor unit
• Where it is not exposed to strong wind.
• Where airflow is good and dustless.
• Where it is not exposed to rain and direct sunshine.
• Where neighbours are not annoyed by operation sound or hot air.
• Where rigid wall or support is available to prevent the increase of operation sound
or vibration.
• Where there is no risk of combustible gas leakage.
• When installing the unit at a high level, be sure to fix the unit legs.
• Where it is at least 3 m away from the antenna of TV set or radio. (Otherwise,
images would be disturbed or noise would be generated.)
• Please install it in an area not affected by snowfall or blowing snow. In areas with
heavy snow, please install a canopy, a pedestal and/or some baffle boards.
• Install the unit horizontally.
Caution:
Avoid the following places for installation where outdoor unit trouble is liable
to occur.
• Where there is too much machine oil.
• Salty environment as seaside areas.
• Hot-spring areas.
• Where sulfide gas exists.
• Other special atmospheric areas.
The outdoor unit produces condensate during the heating operation. Select
the installation place to ensure to prevent the outdoor unit and/or the grounds
from being wet by drain water or damaged by frozen drain water.
2. Selecting the installation location
Fig. 3-1
3.1. Outdoor unit (Fig. 3-1)
Ventilation and service space
■
SUHZ-SW45
A
100 mm or more
B
350 mm or more
C
500 mm or more
When the piping is to be attached to a wall containing metals (tin plated) or metal
netting, use a chemically treated wooden piece 20 mm or thicker between the wall
and the piping or wrap 7 to 8 turns of insulation vinyl tape around the piping.
Note:
When operating the outdoor unit in low outside temperature, be sure to follow
the instructions described below.
• Never install the outdoor unit in a place where its air inlet/outlet side may be ex-
posed directly to wind.
• To prevent exposure to wind, install the outdoor unit with its air inlet side facing
the wall.
• To prevent exposure to wind, it is recommended to install a baffle board on the air
outlet side of the outdoor unit.
Units should be installed by licensed contractor accordingly to local code re-
quirement.
Fig. 4-1
4. Drain piping for outdoor unit (Fig. 4-1)
4.1. Accessories
Check the following parts before installation.
<Outdoor unit>
Drain socket
1
• Provide drain piping before indoor and outdoor piping connection. (It will be hard
to install drain socket if indoor and outdoor piping connection is conducted prior
to drain piping as outdoor unit becomes immovable.)
• Connect the drain hose (obtainable at a store, inside diameter: 15 mm) as
shown in the figure for drainage.
• Make sure to provide drain piping with a downhill grade for easy drain flow.
Note:
Do not use the drain socket in the cold region. Drain may freeze and it
makes the fan stop.
• Do not use the drain socket for the SUHZ-SW45VAH.
SUHZ-SW45VA
(mm)
■
SUHZ-SW45
A
C
A
C
B
Drainage hole
(ø42)
Air inlet
Air inlet
Air outlet
2-10 mm × 21 mm slot
50
840
81
40
330
360
175
500
417.5
Drain socket
Drain hose
1
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