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2-2. Removing Fin Guard for Heat Exchanger
After installation of the outdoor unit, detach the fin guard for
heat exchangers as following steps.
1. Cut out the fin guard entirely attached to the panel and
remove it from the outdoor unit. Pay careful attention not
to damage the fin when cutting out the fin guard.
2. If there is a case where easy to touch the sharp aluminum
fin of the outdoor unit, be sure to attach a snow-proof
ducting to the unit. It is recommended that the outdoor unit
be located away from the touched with hands.
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. 2-4)
In regions with heavy snowfall,
the outdoor unit should be
CAUTION
provided with a solid, raised plat-
form and snow-proof ducting
(field supply). (Fig. 2-5)
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. 2-6) 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. 2-5)
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.
Fig. 2-4
AVOID
Without snow-
proof ducting
(Without platform)
Fig. 2-5
Fig. 2-6
17
DO
Fallen snow
With snow-
proof ducting
(High platform)
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