Carrier bryant 830CA User Manual Download

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830CA: Installation, Start–Up, Operating and Service and Maintenance Instructions

Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

Bottom Return Air Inlet

These furnaces are shipped with bottom closure panel installed in bottom

return-air opening. Remove and discard this panel when bottom return

air is used. To remove bottom closure panel, perform the following:

1. Tilt or raise furnace and remove two screws holding bottom filler

panel, see

Fig. 9

2. Rotate bottom filler panel downward to release holding tabs.
3. Remove bottom closure panel.
4. Reinstall bottom filler panel and screws

HORIZONTAL INSTALLATION

The furnace can be installed horizontally in an attic or crawl space on

either the left-hand (LH) or right-hand (RH) side. The furnace can be

hung from floor joists, rafters or trusses or installed on a

non-combustible platform, blocks, bricks or pad.

Suspended Furnace Support

The furnace may be supported under each end with threaded rod, angle

iron or metal plumber’s strap as shown, see

Fig. 14

and

Fig. 15

. Secure

angle iron to bottom of furnace as shown. Heavy-gauge sheet metal

straps (plumber’s straps) may be used to suspend the furnace from each

bottom corner. To prevent screws from pulling out, use 2 #8 x 3/4-in. (19

mm) screws into the side and 2 #8 x 3/4-in. (19 mm) screws in the

bottom of the furnace casing for each strap, see

Fig. 14

and

Fig. 15

. If

the screws are attached to ONLY the furnace sides and not the bottom,

the straps must be vertical against the furnace sides and not pull away

from the furnace sides, so that the strap attachment screws are not in

tension (are loaded in shear) for reliable support.

Platform Furnace Support

Construct working platform at location where all required furnace

clearances are met, see

Fig. 1

and

Fig. 16

. For furnaces with 1-in. (25

mm) clearance requirement on side, set furnace on noncombustible

blocks, bricks or angle iron. For crawl space installations, if the furnace

is not suspended from the floor joists, the ground underneath furnace

must be level and the furnace set on blocks or bricks.

Roll-Out Protection

Provide a minimum 17-3/4 in. x 22 in. (451 mm x 559 mm) piece of

sheet metal for flame roll-out protection in front of burner area for

furnaces closer than 12 inches (305 mm) above the combustible deck or

suspended furnaces closer than 12 inches (305 mm) to joists. The sheet

metal

MUST

extend underneath the furnace casing by 1 in. (25 mm)

with the door removed.
The bottom closure panel on furnaces of widths 17-1/2 in. (445 mm) and

larger may be used for flame roll-out protection when bottom of furnace

is used for return air connection, see

Fig. 16

for proper orientation of

roll-out shield.

Bottom Return Air Inlet

These furnaces are shipped with bottom closure panel installed in bottom

return-air opening. Remove and discard this panel when bottom return

air is used. To remove bottom closure panel, perform the following:

1. Tilt or raise furnace and remove two screws holding bottom filler

panel, see

Fig. 9

2. Rotate bottom filler panel downward to release holding tabs.
3. Remove bottom closure panel.
4. Reinstall bottom filler panel and screws. Side Return Air Inlet

Side Return Air Inlet

These furnaces are shipped with bottom closure panel installed in bottom

return-air opening. This panel

MUST

be in place when side return air

inlet(s) is used without a bottom return air inlet.

Filter Arrangement

There are no provisions for an internal filter rack in these furnaces.
A field-supplied accessory external filter is required.
Refer to the instructions supplied with the external filter rack for

assembly and installation options.

Table 4 – Opening Dimensions - In. (mm)

FURNACE

CASING

WIDTH

APPLICATION

PLENUM OPENING

FLOOR OPENING

17–1/2

(445)

Upflow Applications on Combustible or Noncombustible Flooring

(subbase not required)