Sidewall Venting - International comfort products N8MSN Installation Instructions Manual

80% single stage, psc motor, category i, gas furnace

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The vent connector can exit the cabinet of the furnace

through one of five locations.

1. Attach the single wall vent connector to the furnace

vent elbow, and fasten the vent connector to the vent

elbow with at least two field−supplied, corrosion−resist-

ant, sheet metal screws located 180_ apart.

NOTE: A flue extension is recommended to extend from the

furnace elbow to outside the furnace casing. If flue extension

is used, fasten the flue extension to the vent elbow with at

least two field−supplied, corrosion−resistant, sheet metal

screws located 180_ apart. Fasten the vent connector to the

flue extension with at least two field−supplied, corrosion

resistant sheet metal screws located 180_ apart.

2. Vent the furnace with the appropriate connector as

shown in Figure 28 − Figure 40.

CAUTION

CUT HAZARD

Failure to follow this caution may result in personal

injury. Sheet metal parts may have sharp edges or

burrs.

Use care and wear appropriate protective clothing,

safety glasses and gloves when handling parts and

servicing furnaces.

3. Determine the correct location of the knockout to be re-

moved.

4. Use a hammer and screwdriver to strike a sharp blow

between the tie points and work the slug back and forth

until the slug breaks free.

FURNACE ORIENTATION

Downflow

Horizontal Left

Downflow

* 4 in. (102 mm) inside casing or vent guard

** Including 4 in. (102 mm) vent section (s)

NOTE: All vent configurations must also meet National Fuel Gas Code (NFGC) venting requirements

NOTE: For all unlisted vent configurations, refer to National Fuel Gas Code (NFGC) venting requirements.

441 01 1402 02

Table 10—Minimum Vent Heights

VENT

ORIENTATION

Vent Elbow left,

then up Figure 32

Vent Elbow right,

then up Figure 35

Vent Elbow up

Figure 36

Vent Elbow up

Figure 36

Vent elbow up then left

Figure 30

Vent elbow up, then right

Figure 33

CAUTION

BURN HAZARD

Failure to follow this caution may cause personal

injury.

Hot vent pipe is within reach of small children when

installed in downflow position. See the following

instruction.

An accessory Vent Guard Kit is REQUIRED for downflow

applications for use where the vent exits through the lower

portion of the furnace casing door. Refer to the Vent Guard Kit

Instructions for complete details.

The horizontal portion of the venting system shall slope

upwards not less than 1/4−in. (6 mm) per linear ft. (21 mm/m)

from the furnace to the vent and shall be rigidly supported

every 5 ft. (1.5 M) or less with metal hangers or straps to

ensure there is no movement after installation.