Bard W24G3DA, Руководство по установке

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Manual 2100-631
Page
10 of 53
See Figure 3 and clearance information in Section 9
and Table 2 for additional information.
Design the duct work according to methods given by
the Air Conditioning Contractors of America (ACCA).
When duct runs through unheated spaces, it should be
insulated with a minimum of one-inch of insulation.
Use insulation with a vapor barrier on the outside of the
insulation. Flexible joints should be used to connect
the duct work to the equipment in order to keep the
noise transmission to a minimum.
A one-inch clearance to combustible material for the
first three feet of duct attached to the outlet air frame
is required. See Wall Mounting Instructions and
Figures 2, 2A, 3 and 3A for further details.
Ducts through the walls must be insulated and all
joints taped or sealed to prevent air or moisture
entering the wall cavity.
Some installations may not require any return air duct.
A metallic return air grille is required with installations
not requiring a return air duct. The spacing between
louvers on the grille shall not be larger than 5/8 inch.
Any grille that meets with the 5/8 inch louver criteria
may be used. It is recommended that Bard Return Air
Grille or Return Filter Grille be installed when no return
duct is used. Contact distributor or factory for ordering
information. If using a return air filter grille, filters
must be of sufficient size to allow a maximum velocity
of 400 fpm.
NOTE: If no return air duct is used, applicable
installation codes may limit this cabinet to
installation only in a single story structure.
4. HIGH ALTITUDE APPLICATIONS
Ratings of gas utilization equipment are based on sea
level operation and need not be changed for operation
at elevations up to 6,000 feet. For operation at
elevations above 6,000 feet and in the absence of
specific recommendations from the local authority
having jurisdiction, equipment ratings shall be reduced
as specified in Section 21.
5. TRANSPORTATION DAMAGE
All units are packed securely in shipping container.
All units should be carefully inspected upon arrival
for damage. In the event of damage, the consignee
should:
1. Note on delivery receipt of any damage to
container.
2. Notify carrier promptly, and request an inspection.
3. In case of concealed damage, the carrier must be
notified as soon as possible within 15 days after
delivery.
4. Claims for any damage, apparent or concealed,
should be filed with the carrier, using the following
supporting documents:
A. Original Bill of Lading, certified copy, or
indemnity bond.
B. Original paid freight bill of indemnity in lieu
thereof.
C. Original invoice or certified copy thereof
showing trade and other discounts or
deductions.
D. Copy of the inspection report issued by
carrier’s representative at the time damage is
reported to carrier.
6. INSTALLATION
Size of unit for proposed installation should be based
on heat loss/heat gain calculations made according to
methods of Air Conditioning Contractors of America
(ACCA). The air duct should be installed in accordance
with the Standards of the National Fire Protection
Association for the Installation of Air Conditioning and
Ventilating Systems of Other Than Residence Type,
NFPA No. 90A, and Residence Type Warm Air Heating
and Air Conditioning Systems, NFPA No. 90B. Where
local regulations are at a variance with instructions,
installer should adhere to local codes.
WARNING
In all cases, there must be a metal duct
connection made to the supply air flange, and
a one inch clearance to combustibles must
be maintained to this duct connection.
For free blow applications, a
metal sleeve must be used in the wall opening
itself, again maintaining a one inch clearance
to combustibles.
Failure to use the sheet metal can cause fire
resulting in property damage, injury, or death.