Air-Discharge Chamber For Top Discharge; Installing The Unit In Heavy Snow Areas; Precautions For Installation In Heavy Snow Areas - Panasonic R410A Installation Instructions Manual

2-2. Air-Discharge Chamber for Top Discharge

Be sure to install an air discharge chamber in the
fi eld when:
it is diffi cult to keep a space of min. 20" between
the air discharge outlet and an obstacle.
the air discharge outlet is facing a sidewalk and
discharged hot air may bother passers-by.
Refer to Fig. 2-5.

2-3. Installing the Unit in Heavy Snow Areas

In locations with strong wind, snow-proof ducting
should 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 to the
unit may occur.
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.

2-4. Precautions for Installation in Heavy Snow Areas

(1) The platform should be higher than the max. snow
depth. (Fig. 2-6)
(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.
Air discharge
Fig. 2-5
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. 2-6
Outdoor
Unit
Duct
Air
Intake
Fig. 2-7
12
Air discharge
With snow-
proof ducting
(High platform)