Bard P1242A1 Spécifications télécharger pdf (Page 11)

Manual 2100-353F

Page 11 of 26

INSTALLATION

LOCATION

GENERAL

The unit must be located outside, or in a well ventilated

area. It must not be in the space being heated or cooled.

A sound absorbing material should be considered if the

unit is to be installed in such a position or location that

might cause transmission of sound or vibration to the

living area or adjacent buildings.

SLAB MOUNTING

In areas where winter temperatures DO NOT go below

32° F for periods over twelve hours, the unit may be

slab mounted at grade level. When installing unit at

grade level, install on a concrete slab at least four inches

above finished grade level. Slab should have a slope

tolerance away from the building structure of at least ¼

inch per foot, while being level from side to side. Place

slab in a location where runoff water from higher

ground will not collect around unit. See Figure 2.

A minimum of 18 inches should be provided between

the coil inlet and any building surfaces. Provide at least

four feet between coil outlet and any building wall,

fences or other vertical structures. Provide a minimum

of three feet clearance on the service access side of the

unit. See Figure 3.

ROOF MOUNTING

When a unit is installed in areas where low ambient

temperatures or strong winter winds exist, it should be

placed for prevailing winter winds are not in direct line

with the outdoor coil. If this is not possible, a wind

barrier should be constructed. Place barrier 24 inches

from the coil inlet side of the unit and in the direction of

prevailing winds. Size barrier at least the same height

and width as the unit. This may be necessary on ground

level installations also. See Figure 4.

WINTER INSTALLATION BELOW 32°F

In areas where winter conditions go below 32°F for

extended periods, the unit must be elevated above the

mounting surface to prevent snowfall or ice

accumulation from interfering with the operation of the

unit. A minimum of twelve inch elevation is

recommended, while greater elevation may be required

for areas of high snow accumulation. Poured concrete,

steel framework, brick, cement block, etc., can be

utilized to construct a suitable raised mounting platform.

See Figure 5.

TYPICAL INSTALLATIONS

ROOF MOUNTED

– The unit is mounted on a

sturdy base on the roof of the building. Return air to

the unit is brought through a single return grille

(grilles with built-in filters are best since they enable

easy access for filter changing). Return air ducts are

attached to the lower section of the front panel.

Supply air is brought from the unit to attic duct work

or to a furred down hall. Supply air duct is attached

to the top of the front panel.

CAUTION: All outdoor duct work must be

thoroughly insulated and

weatherproofed. All attic duct work

must be thoroughly insulated. 2-inch

thick insulation with suitable vapor

barrier is recommended for both outdoor

and attic runs.

In roof top installation, as in all installations, the air

conditioner must be level from side to side.

However, the unit should have a pitch along the

length to assure complete external drainage of

precipitation and of defrost condensate. See Figures

6 and 7, and Tables 6 and 7.

CRAWL SPACE

– Duct work installed in crawl

space must be well insulated and provided with a

vapor barrier. In addition, the crawl space must be

thoroughly ventilated and provided with a good

vapor barrier as a ground cover. It is most desirable

to install the unit will be outdoors rather than inside

the crawl space, so that it will be readily accessible

for service.

SLAB MOUNTED AT GROUND LEVEL

– This

type installation is ideal for homes with a slab floor

construction where a roof mounted unit is not

desired. The supply and return duct work can be run

through a furred closet space.

THROUGH THE WALL

– This type installation

requires a suitable framework to be fabricated

capable of withstanding the unit weight. Normally

the unit will be insulated so as to minimize supply

and return duct work.

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Bard P1242A1 Spécifications Page 11

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