General Requirements; Ductwork Acoustical Treatment; Supply Air Connections - Bryant 310AAV Installation, Start-Up, Operating And Service And Maintenance Instructions

FURNACE
CASING
WIDTH
Upflow Applications on Combustible or Noncombustible Floor-
Downflow Applications on Noncombustible Flooring (KGASB
14–3/16
Downflow applications on combustible flooring (KGASB sub-
(360)
Downflow Applications on Combustible Flooring with CNPV,
CNRV, CAR, or CAP Coil Assembly or KCAKC coil box
Upflow Applications on Combustible or Noncombustible Floor-
Downflow Applications on Noncombustible Flooring (KGASB
17–1/2
Downflow applications on combustible flooring (KGASB sub-
(445)
Downflow Applications on Combustible Flooring with CNPV,
CNRV, CAR, or CAP Coil Assembly or KCAKC coil box
Upflow Applications on Combustible or Noncombustible Floor-
Downflow Applications on Noncombustible Flooring (KGASB
21
Downflow applications on combustible flooring (KGASB sub-
(533)
Downflow Applications on Combustible Flooring with CNPV,
CNRV, CAR, or CAP Coil Assembly or KCAKC coil box
Upflow Applications on Combustible or Noncombustible Floor-
Downflow Applications on Noncombustible Flooring (KGASB
24--- 1/2
Downflow applications on Combustible flooring (KGASB sub-
(622)
Downflow Applications on Combustible Flooring with CNPV,
CNRV, CAR, or CAP Coil Assembly or KCAKC coil box
AIR DUCTS

General Requirements

The duct system should be designed and sized according to
accepted national standards such as those published by: Air
Conditioning Contractors Association (ACCA), Sheet Metal and
Air Conditioning Contractors National Association (SMACNA)
or American Society of Heating, Refrigerating and Air
Conditioning Engineers (ASHRAE) or consult The Air Systems
Design Guidelines reference tables available from your local
distributor. The duct system should be sized to handle the
required system design CFM at the design external static pressure.
The furnace airflow rates are provided in Table 5 - - AIR
DELIVERY- -CFM (With Filter).
When a furnace is installed so that the supply ducts carry air
circulated by the furnace to areas outside the space containing the
furnace, the return air shall also be handled by duct(s) sealed to
the furnace casing and terminating outside the space containing
the furnace.
Secure ductwork with proper fasteners for type of ductwork used.
Seal supply- - and return- -duct connections to furnace with code
approved tape or duct sealer.
NOTE: Flexible connections should be used between ductwork
and furnace to prevent transmission of vibration. Ductwork
passing through unconditioned space should be insulated and
sealed to enhance system performance. When air conditioning is
used, a vapor barrier is recommended.
Maintain a 1- -in. (25 mm) clearance from combustible materials
to supply air ductwork for a distance of 36 in. (914 mm)
horizontally from the furnace. See NFPA 90B or local code for
further requirements.
Table 4—Opening Dimensions - - In. (mm)
APPLICATION
ing (KGASB subbase not required)
subbase not required)
base required)
(KGASB subbase not required)
ing (KGASB subbase not required)
subbase not required)
base required)
(KGASB subbase not required)
ing (KGASB subbase not required)
subbase not required)
base required)
(KGASB subbase not required)
ing (KGASB subbase not required)
subbase not required)
base required)
(KGASB subbase not required)
PLENUM OPENING
A
12--- 11/16 21--- 5/8
(322) (549)
12--- 9/16 19
(319) (483)
11--- 13/16 19
(284) (483)
12--- 5/16 19
(319) (483)
16 21--- 5/8
(406) (549)
15--- 7/8 19
(403) (483)
15--- 1/8 19
(384) (483)
15--- 1/2 19
(394) (483)
19--- 1/2 21--- 5/8
(495) (549)
19--- 3/8 19
(492) (483)
18--- 5/8 19
(473) (483)
19 19
(483) (483)
23 21--- 1/8
(584) (537)
22--- 7/8 19
(581) (483)
22--- 1/8 19
(562) (483)
22--- 1/2 19
(572) (483)

Ductwork Acoustical Treatment

NOTE: Metal duct systems that do not have a 90 degree elbow
and 10 ft. (3 M) of main duct to the first branch take- -off may
require internal acoustical lining. As an alternative, fibrous
ductwork may be used if constructed and installed in accordance
with the latest edition of SMACNA construction standard on
fibrous glass ducts. Both acoustical lining and fibrous ductwork
shall comply with NFPA 90B as tested by UL Standard 181 for
Class 1 Rigid air ducts.

Supply Air Connections

For a furnace not equipped with a cooling coil, the outlet duct
shall be provided with a removable access panel. This opening
shall be accessible when the furnace is installed and shall be of
such a size that the heat exchanger can be viewed for possible
openings using light assistance or a probe can be inserted for
sampling the air stream. The cover attachment shall prevent leaks.
13
FLOOR OPENING
B C D
13--- 5/16 22--- 1/4
(338) (565)
13--- 3/16 19--- 5/8
(335) (498)
13--- 7/16 20--- 5/8
(341) (600)
13--- 5/16 20
(338) (508)
16--- 5/8 22--- 1/4
(422) (565)
16--- 1/2 19--- 5/8
(419) (498)
16--- 3/4 20--- 5/8
(425) (600)
16--- 1/2 20
(419) (508)
20--- 1/8 22--- 1/4
(511) (565)
20 19--- 5/8
(508) (498)
20--- 1/4 20--- 5/8
(514) (600)
20 20
(508) (508)
23--- 5/8 22--- 1/4
(600) (565)
23--- 1/2 19--- 5/8
(597) (498)
23--- 3/4 20--- 5/8
(603) (600)
23--- 1/2 20
(597) (508)