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Air Discharge Chamber for Top Discharge
Be sure to install the air discharge chamber in the fi eld
when:
•
it is diffi cult to keep a space of min. 1 m between
the air discharge outlet and an obstacle, also in
case of the obstacle is higher than 2 m. Then
make a space of 50 cm between the air discharge
chamber and the obstacle.
•
the air discharge outlet is facing a sidewalk and
discharged hot air annoys passers-by. (Fig. 1-9)
Installing the Unit in Heavy Snow Areas
In locations with strong wind, snow-proof ducting
should likewise be fi tted and direct exposure to the
wind should be avoided as much as possible.
Countermeasures against snow and wind
In regions with snow and strong wind, the following
problems may occur when the outdoor unit is not
provided with a platform and snow-proof ducting:
a) The outdoor fan may not run and damage of the
unit may be caused.
b) There may be no air fl ow.
c) The tubing may freeze and burst.
d) The condenser pressure may drop because of
strong wind, and the indoor unit may freeze.
Precautions for Installation in Heavy Snow Areas
(1) The platform should be higher than the max. snow
depth. (Fig. 1-10)
(2) 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 outdoor unit.
(3) The platform foundation must be fi rm and the unit
must be secured with anchor bolts.
(4) In case of installation on a roof subject to strong
wind, countermeasures must be taken to prevent
the unit from being blown over.
In regions with signifi cant snowfall, the outdoor unit should
be provided with a platform and snow-proof duct.
Without snow-
proof ducting
(Low platform)
Fig. 1-10
Without snow-
proof ducting
(High platform)
1-329
Air discharge
Fig. 1-9
Duct
Air Intake
Air Intake
Air Intake
Fig. 1-11
Air discharge
Platform (foundation)
Duct
Air Intake
Platform (foundation)
1
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