Precautions For Installation In Heavy Snow Areas; Installing The Unit In Heavy Snow Areas - Sanyo Classic PAC i serie Einbauanleitung

In case of multiple installations
● Provide a solid base (concrete block, 10 × 40 cm beams or
equal), a minimum of 15 cm above ground level to reduce
humidity and protect the unit against possible water damage
and decreased service life. (Fig. 2-8)
● Use lug bolts or equal to bolt down unit, reducing vibration
and noise.
Air intake
Air
discharge
Anchor bolts
(4 pieces)
2-3. Air Discharge Chamber for Top Discharge
Be sure to install the air discharge chamber in the field when:
● it is difficult 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. 2-9)

2-4. Installing the Unit in Heavy Snow Areas

In locations with strong wind, snow-proof ducting should
likewise be fitted 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 (Fig. 2-10).
b) There may be no airflow.
c) The tubing may freeze and burst.
d) The condenser pressure may drop because of strong wind,
and the indoor unit may freeze.
Without snow-proof ducting
(Low platform)
In regions with significant snowfall, the outdoor unit should
be provided with a platform and snow-proof duct.
Air intake
Min. 15 cm
Fig. 2-8
Air discharge
Fig. 2-9
With snow-proof ducting
(High platform)
Fig. 2-10
2-5. Precautions for Installation in Heavy Snow
Areas
(1) The platform should be higher than the max. snow depth.
(Fig. 2-11)
(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 firm 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.
2-6. Dimensions of Snow / Wind-proof Ducting and
Refrigerant Tubing Space for Installation
Air intake
About 1/2 of
the unit height
Air intake
About 1/2 of
the unit height
15
Duct
Higher than the
maximum snow depth
Air intake
Platform (foundation)
Duct
Higher than the
maximum snow
depth
Air intake
Platform (foundation)
Fig. 2-11