Carrier N92ESN Installation, Start-Up, Operating And Service And Maintenance Instructions page 20

N92ESN: Installation, Start-up, Operating and Service and Maintenance Instructions
FURNACE CASING WIDTH
14-3/16 (360)
17-1/2 (445)
21 (533)
24-1/2 (622)
*. Not all families have these models
†. Recommended to maintain air filter face velocity. See Specification Sheet for part number
FILTER CABINET HEIGHT - IN (MM)
16 (406)
20 (508)
24 (610)
*. Filters with a side return-air may have a different filter size. Measure the filter to obtain the correct size.
†. Recommended to maintain air filter face velocity. See Specification Sheet for part number.
COMBUSTION - AIR PIPE
(SEE VENTING SECTION)
(51 mm)
ROLLOUT PROTECTION REQUIRED
Install 12" x 22" (305x559 mm) sheet metal in front of burner compartment
area. The sheet metal MUST extend underneath the furnace casing by 1-in.
(25 mm) with the door removed. The bottom closure panel may be used for
flame roll-out protection when bottom of furnace is used for return air connection.
NOTE: Local codes may require a drain pan and condensate trap when a
condensing furnace is installed over a finished ceiling.
Fig. 26 – Working Platform for Attic Installation
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
Table 8 – Air Filter Selection and Duct Sizing - In. (mm)
*
SIDE RETURN
16 x 25 x 3/4
(406 x 635 x 19)
16 x 25 x 3/4
(406 x 635 x 19)
16 x 25 x 3/4
(406 x 635 x 19)
16 x 25 x 3/4
(406 x 635 x 19)
Air Filter Located in Filter Cabinet
(1) 16 x 25 x 3/4 (406 x 635 x 19) or
(1) 16 x 25 x 4-5/16 (406 x 635 x 110)
(1) 20 x 25 x 3/4* (508 x 635 x 19) or
(1) 20 x 25 x 4-5/16 (508 x 635 x 110)
(1) 24 x 25 x 3/4* (610 x 635 x 19) or
(1) 24 x 25 x 4-5/16 (610 x 635 x 110)
30 IN. (762 mm)
MIN. WORK AREA
2-IN.
FILTER SIZE
BOTTOM RETURN
14 x 25 x 3/4
(356 x 635 x 19)
16 x 25 x 3/4
(406 x 635 x 19)
20 x 25 x 3/4
(508 x 635 x 19)
24 x 25 x 3/4
(610 x 635 x 19)
*
FILTER SIZE - IN (MM)
Install 12" x 22" (204 x 559 mm) sheet metal in front of and above the burner compartment area.
The sheet metal MUST extend above the furnace casing by 1-in. (25 mm with the door removed.
A 1-in. (25 mm) clearance minimum between top of furnace and combustible material is required.
The entire length of furnace must be supported when furnace is used in horizontal position to
ensure proper drainage.
NOTE: FURNACE SHOWN IS A DIRECT-VENT APPLICATION. REFER TO THE VENTING SECTION FOR
ALLOWABLE VENT CONFIGURATIONS.
A150580
NOTE: Local codes may require a drain pan and condensate trap when a
condensing furnace is installed over a finished ceiling.
Fig. 27 – Suspended Furnace Installation
Leveling Legs (If Desired)
In upflow position with side return inlet(s), leveling legs may be used.
See Fig. 28. Install field-supplied, 5/16 x 1-1/2 in. (8 x 38 mm) (max)
corrosion-resistant machine bolts, washers and nuts.
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
To install leveling legs:
1. Position furnace on its back. Locate and drill a hole in each bottom
corner of furnace.
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.)
20
FILTER TYPE
Washable
Washable
Washable
Washable
†
FILTER TYPE
Washable or Media
Washable or Media*
Washable or Media*
COMBUSTION-AIR PIPE
(SEE VENTING SECTION)
2-IN.
(51 mm)
ROLLOUT PROTECTION REQUIRED
Fig.
†
A150581
24.