Location Relative To Cooling Equipment - Bryant 820TA Installation, Start-Up, Operating And Service And Maintenance Instructions

820TA/821TA: Installation, Start-up, Operating and Service and Maintenance Instructions
Fig. 14 – Horizontal Unit Suspension
Fig. 15 – Horizontal Suspension with Straps
Roll-Out Protection
Provide a minimum 17-3/4-in. X 22-in. (451 X 559 mm) piece of sheet
metal for flame roll-out protection in front of burner area for furnaces
closer than 12-in. (305 mm) above the combustible deck or suspended
furnaces closer than 12-in. (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
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
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) are used without a bottom return air inlet.
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
A10130
A10131
Fig. 13 for proper orientation of
Not all horizontal furnaces are approved for side return air connections.
(Refer to Horizontal Return Air Configurations and Restrictions
(Fig. 20) in the "Upflow and Horizontal Furnaces" section.)
Leveling Legs (If Desired)
In upflow position with side return inlet(s), leveling legs may be used.
(See Fig. 16). Install field-supplied, 5/16 X 1-1/2 in. (8 X 38 mm) (max)
corrosion-resistant machine bolts, washers and nuts.
Fig. 16 – Leveling Legs
NOTE: Bottom closure must be used when leveling legs are used. It
may be necessary to remove and reinstall bottom closure panel to install
leveling legs. To remove bottom closure panel, see Item 1 in Bottom
Return Air Inlet section in Step 1 above.
To install leveling legs:
1. Position furnace on its back. Locate and drill a hole in each bottom
corner of furnace. (See
2. For each leg, install nut on bolt and then install bolt with nut in
hole. (Install flat washer if desired.)
3. Install another nut on other side of furnace base. (Install flat washer
if desired.)
4. Adjust outside nut to provide desired height, and tighten inside nut
to secure arrangement.
5. Reinstall bottom closure panel if removed.

LOCATION RELATIVE TO COOLING EQUIPMENT

The cooling coil must be installed parallel with, or on the downstream
side of the unit to avoid condensation in the heat exchangers. When
installed parallel with the furnace, dampers or other flow control must
prevent chilled air from entering the furnace. If the dampers are
manually operated, they must be equipped with means to prevent
operation of either unit unless the damper is in the full-heat or full-cool
position.
Filter Arrangement
!
CARBON MONOXIDE POISONING HAZARD
Failure to follow this warning could result in personal injury, or death.
Never operate a furnace without a filter or with filter access door
removed.
11
Fig. 16).
WARNING
A89014