Lennox International Inc G32Q4-100, G32Q3-100, G32Q5-125, G32Q5-100, G32Q3-75, G32Q4-125 Wallringkit

On roof terminations, the intake piping should termi- nate straight down using two 90° elbows. See figure 8.

NOTE - If winter design temperature is below 32°F (O°C), exhaust piping must be insulated with 1/2 inch (13 mm) Armaflex or equivalent when run through unheated space. Do not leave any surface area of exhaust pipe open to outside air," exterior exhaust pipe must be insu- lated with 1/2 inch (13 ram) Armaflex or equivalent. In ex- treme cold climate areas, 3/4 inch (19 mm) Armaflex or equivalent is recommended. Insulation on outside runs of

exhaust pipe must be painted or wrapped to protect in- sulation from deterioration.

NOTE - During extremely cold temperatures, below approximately 20°F (6.67°C), units with long runs of vent pipe through unconditioned space, even when insulated, may form ice in the exhaust termination that prevents the unit from operating properly. Longer run times of at least 5 minutes will alleviate most icing problems. Also, a heating cable may be installed on exhaust piping and termination to prevent freeze-ups. Heating cable installation kit is available from Lennox. See Condensate Piping section for part numbers.

NOTE - Care must be taken to avoid recirculation of ex- haust back into intake pipe.

6 - On field-supplied terminations for side wall exits, ex- haust piping should extend a maximum of 12 inches (305 mm) beyond the outside wall. Intake piping should be as short as possible. See figure 10.

	IMAX.
Inches (ram)	3 x 2 (70 x 51) OR
	2 x %1/2 (51 x 38)
	PVC REDUCER
	1/2 (13) FOAM
	INSULATION IN
	UNCONDrrlONED
12 (305) ABOVE	SPACE
ACCUMULATION
AVERAGE SNOW
3 (76) OR	UNCONDmONED
2 (5t) PVC	ATTIC SPACE
PROVIDE SUPPORT
FOR INTAKE AND
F.XHAUST LINES

ROOFTERMINATION KIT

(15F'75)LB-49107CCfor 2 (5t) Venting (44341)LB-65678Afor 3 (76)Venting

FIGURE 8

EXHAUST

12 (305) ABOVE

AVERAGE SNOW ACCUMULATION

INTAKE

TERMINATION

Inches (mm)

EXHAUSTINTAKE

CONCENTRIC ROOFTOP TERMINATION (60G77) LB-49107CE for G32-75 Units Only (33K97) LB-87942 for G32-100 & -125 Units Only

		FIGURE	9
1/2 (13) ARMAFLEX		12 (305) MIN.
INSULATION	IN
UNCONDITIONED	SPACE		2 X 1-1/2
			(51 X 38)
		PV	REDUCER
		_ _	'VC
1/2 (13) ARMAFLEX t' I			6 (I 52)
INSULATION			MAXIMUM
		_	2 (_ I PVC
OUTSIDE j			PLING
WALL
Inches (ram)		TOPVIEW
	WALLRINGKIT

(15J74) LB-49107CBfor2 (50,8 ! Venting

FIGURE 10

7- On field-supplied terminations, a minimum separa- tion distance between the end of the exhaust pipe and the end of the intake pipe is 8 inches (203 mm).

8- If intake and exhaust piping must be run up a side wall to position above snow accumulation or other obstructions, the piping must be supported every 3 feet (.91 m) as shown in figure 15. Refer to figures 13 and 14 for proper piping method. W'FKwall termina- tion kit must be extended for use in this application, See figure 18 or use kit WTKX shown in figure 19.

When exhaust and intake piping must be run up an outside wall, the exhaust piping is reduced to 1-1/2

inches (38 mm) after the final elbow. The intake pip- ing may be equipped with a 90°elbow turndown. Us- ing 90 ° turndown will add 5 feet (1.5 m) to the equiva- lent length of the pipe.

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