1/2 (12.7) FOAM INSULATION

 

IN UNCONDITIONED SPACE

Inches (mm)

n

OUTSIDEWALL

qlp

 

 

Optional Turndown

 

Shown

TOPVIEW

(Intake Onty)

 

WALL TERMINATION

(22G44)LB-49107CDfor 2 (50,8)Venting (44J40)LB-65701Afor 3 (76.2)Venting

FIGURE 11

EXHAUST

TERMINATION

EXHAUST

INTAKE

abovegrade,

Inches (ram)

CONCENTRIC WALL TERMINATION (60G77) LB-49107CE for G32-75 Units Only (331(97) LB-87942 for G32-t00 & -125Units Only

FIGURE 12

courtyard areas or other recessed areas. Do not position termination ends directly below roof eaves or above a walkway. Since the G32 is a certified di- rect vent, Category iV gas furnace, the location of the termination is limited by local building codes. In the absence of local codes, refer to the current Na- tional Fuel Gas Code ANSI Z223-1 in USA, and cur- rent standard CAN/CGA-B149.1 of the Natural Gas Installation Instructions in Canada for details. The termination should be at least 12 inches (305 mm) from any opening through which flue products could enter the building.

When horizontally vented, minimum clearance for termination from electric meters, gas meters, regula- tors and relief equipment is 4 feet (1.2 m) for US installations. Refer to the current CAN/CGA-B149.1

for installations in Canada or with authorities having local jurisdiction.

At vent termination, care must be taken to maintain protective coatings over building materials (pro- longed exposure to exhaust condensate can destroy protective coatings). It is recommended that the ex- haust outlet not be located within 6 feet (1.8 m) of a condensing unit because the condensate can dam- age the painted coating.

Inches(mm)

UNCONDITIONED

SPACE

OUTSIDE WALL

PROVIDE SUPPORT

12 (305) MIN for 2 (51)

20 (5oa)MAXfor3 (76):

F

FOR INTAKE AND /

HI II t2(S_0)ASOVE

EXHAUST UNES EVERY

 

3_(914)

 

1/2113) FOAM

 

INSULATION IN

 

UNCONOmONED

Ii2 (131 FOAM

SPACE

INSULATION

SiDE VIEW

WALL RINGTERMINATION

(15F74)LE-49107CBfor 2 In. (51)Venting

See v.ntlng table 4 for maglng_ venting lengths with this Irmr:l_mant.

FIGURE 13

9 - Position terminationends so they are free from any obstructions and above the level of snow accumula-

tion (where applicable). Termination ends must be a

minimum of 12 inches (305 mm) above grade level. Do not point into window wells, stairwells, alcoves,

10 - Suspend piping using hangers at a minimum of every 5 feet (1.52 m) for schedule 40 PVC and every 3 feet (.91 m) for ABS-DWV, PVC-DWV, SDR-21 PVC, and SDR-26 PVC piping. A suitable hanger can be fabricated by using metal or plastic strapping or a large wire tie.

11 - In areas where piping penetrates joists or interior walls, hole must be large enough to allow clearance

on all sides of pipe as it passes through the center of the hole.

12 - Isolate piping at the point where it exits the outside wall or roof.

Page 12

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Image 12
Lennox International Inc G32Q3-100 Outsidewall, Wall Termination, Exhaust Termination Intake, Wall Ringtermination