Sanyo R410A - Manual (Page 21)

2-3. Shield for Horizontal Exhaust Discharge
It is necessary to install an air-discharge chamber (field
supply) to direct exhaust from the fan horizontally if it is diffi-
cult to provide a minimum space of 7 ft. between the air-dis-
charge outlet and a nearby obstacle. (Fig. 2-8)
CAUTION
In regions with heavy snowfall,
the outdoor unit should be
provided with a solid, raised plat-
form and snow-proof ducting
(field supply). (Fig. 2-9)
2-4. Installing the Outdoor Unit in Heavy Snow
Areas
In locations where wind-blown snow can be a problem,
snow-proof ducting (field supply) should be fitted to the unit
and direct exposure to the wind should be avoided as much
as possible. (Fig. 2-10) The following problems may occur if
proper countermeasures are not taken:
● The fan in the outdoor unit may stop running, causing the
unit to be damaged.
● There may be no air flow.
● The tubing may freeze and burst.
● The condenser pressure may drop because of strong
wind, and the indoor unit may freeze.
2-5. Precautions When Installing in Heavy Snow
Areas
a) The platform should be higher than the maximum snow
depth. (Fig. 2-9)
b) The 2 anchoring feet of the outdoor unit should be used
for the platform, and the platform should be installed
beneath the air-intake side of the outdoor unit.
c) The platform foundation must be solid and the unit must
be secured with anchor bolts.
d) When installing on a roof subject to strong wind, coun-
termeasures must be taken to prevent the unit from
being overturned.
With snow-
proof ducting
(High platform)
Without snow-
proof ducting
(Without platform)
AVOID
Fallen snow
DO
Fig. 2-8
Fig. 2-9
Fig. 2-10
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