International comfort products N8MXL Installation Instructions Manual page 29

Single stage, ecm motor category i, gas furnace

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Installation instructions manual (47 pages)

Table of Contents

SEE NOTES: 1,2,4,7,8,9 on the page

following these figures

Fig. 35 − Horizontal Right Application−Vent Elbow Right

SEE NOTES: 1,2,4,5,7,8,9 on the page

following these figures

Fig. 36 − Horizontal Left Application−Vent Elbow Up

1. For common vent, vent connector sizing and vent material: United States−−use the NFGC.

2. Immediately increase to 5−inch (127 mm) or 6−inch (152 mm) vent connector outside furnace casing when 5−inch (127 mm) vent connector is required, refer to Note 1

above.

3. Side outlet vent for upflow and downflow installations must use Type B vent immediately after exiting the furnace, except when factory−authorized, Downflow Vent

Guard Kit, is used in the downflow position. See Specification Sheet for accessory listing.

4. Type−B vent where required, refer to Note 1 above.

5. Four−inch single−wall (26 ga. min.) vent must be used inside furnace casing and when the Downflow Vent Guard Kit is used external to the furnace. See Specification

Sheet for accessory listing.

6. Factory−authorized accessory Downflow Vent Guard Kit required in downflow installations with lower vent configuration. See Specification Sheet for accessory listing.

7. Chimney Adapter Kit may be required for exterior masonry chimney applications. Refer to Chimney Adapter Kit for sizing and complete application details. See

Specification Sheet for accessory listing.

8. Secure vent connector to furnace elbow with (2) corrosion−resistant sheet metal screws, spaced approximately 180_ apart.

9. Secure all other single wall vent connector joints with (3) corrosion resistant screws spaced approximately 120_ apart. Secure Type−B vent connectors per vent connector

manufacturer 's recommendations.

441 01 1421 02

A03214

A03215

SEE NOTES: 1,2,4,5,7,8,9

Fig. 39 − Horizontal Right Application−Vent Elbow Left

VENTING NOTES FOR FIGURES 27 − 39

Specifications are subject to change without notice.

SEE NOTES: 1,2,4,5,7,8,9 on the page

following these figures

Fig. 37 − Horizontal Right Application−Vent Elbow Left

then Up