COMBUSTION AIR AND VENT PIPE

Figure 15 - Concentric Vent Terminations

1" (2.54cm) Maximum

CombustionVent

Air

Figure 17 - Concentric Vent Roof Installation

NOTE:VENT

SUPPORT MUST BE

FIELD INSTALLED TO

SECURE TERMINATION

KIT TO STRUCTURE.

COMBUSTION AIR

A

D

C

1" (2.54cm) Maximum

*See Note Below

Combustion

Air

Overhang

12" (30cm) Minimum

36"(0.9m) Minimum

Maintain 12" Maintainclearance12"(30cm)above

Vent clearancehighestaboveanticipatedhighest anticipatedsnow levelsnoworlevelgradeor

grade

AROOF BOOT/FLASHING

(FIELD SUPPLIED)

B

ELBOW

(FIELD SUPPLIED)

 

 

C

SUPPORT

(FIELD SUPPLIED)

 

 

 

 

 

MAINTANIN 12 IN.

 

(18IN. FOR CANADA)

 

MINIMUM CLEARANCE VENT

DABOVE HIGHEST ANTICIPATED SNOW LEVEL. MAXIMUM OF 24 IN. ABOVE ROOF

B

COM

AIR

*Must be less than 4" or greater than 24" Horizontal dis- tance between end bells of each air intake to prevent flue gas recirculation.

Figure 16 - Concentric Vent

ASTRAP

(FIELD SUPPLIED)

BELBOWB (FIELD SUPPLIED)

C1” MAXIMUM

VENT

COMBUSTION AIR

A

NOTE:

SECURING STRAP MUST BE FIELD INSTALLED TO PREVENT MOVEMENT OF TERMINATION KIT IN SIDE WALL.

COMBUSTION AIR

VENT

C

26

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Lennox International Inc GWB9-050IH-2, GWB9-075IH-2, GWB9-100IH-2 Concentric Vent Terminations, CombustionVent Air

GWB9-050IH-2, GWB9-100IH-2, GWB9-075IH-2, Gas-Fired Hot Water Boiler specifications

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