Goodman Mfg CVC9/95 Vertical Terminations Dual Pipe, Standard Horizontal Terminations Dual Pipe

VENT/FLUE PIPE & COMBUSTION AIR PIPE

UPFLOW

Direct Vent (Dual Pipe) Maximum Allowable Length*

of Vent/Flue & Combustion Air Intake Pipe (ft)

Unit Input	Termination	Pipe(4)			Number of Elbows (1)(2)(3)(5)
(Btu)	Style	(inch)	1	2		3	4	5	6	7	8
45,000	Standard	2 or 2 1/2	71	68		65	62	59	56	53	50
	Alternate	2 or 2 1/2	58	55		52	49	46	43	40	37
	Standard	2 or 2 1/2	49	46		43	40	37	34	31	28
70,000		3	71	68		65	62	59	56	53	50
	Alternate	2 or 2 1/2	36	33		30	27	24	21	18	15
		3	57	54		51	48	45	42	39	36
90,000	Standard	3	71	68		65	62	59	56	53	50
	Alternate	3	57	54		51	48	45	42	39	36
115,000	Standard	3	49	46		43	40	37	34	31	28
	Alternate	3	35	32		29	26	23	20	17	14

*Maximum allowable limits listed are individual lengths for inlet & flue and NOT a combination.

COUNTERFLOW

Direct Vent (Dual Pipe) Maximum Allowable Length*

of Vent/Flue & Combustion Air Intake Pipe (ft)

Unit Input	Termination	Pipe(4)			Number of Elbows (1)(2)(3)(5)
(Btu)	Style	(inch)	1	2		3	4	5	6	7	8
	Standard	2 or 2 1/2	49	46		43	40	37	34	31	28
70,000		3	71	68		65	62	59	56	53	50
	Alternate	2 or 2 1/2	36	33		30	27	24	21	18	15
		3	57	54		51	48	45	42	39	36
	Standard	2 or 2 1/2	61	58		55	52	49	46	43	40
90,000		3	71	68		65	62	59	56	53	50
	Alternate	2 or 2 1/2	48	45		42	39	36	33	30	27
		3	57	54		51	48	45	42	39	36
115,000	Standard	3	71	68		65	62	59	56	53	50
	Alternate	3	57	54		51	48	45	42	39	36

*Maximum allowable limits listed are individual lengths for inlet & flue and NOT a combination.

1)Elbows and/or tees used in terminations must be included when determin- ing quantity of allowable elbows in the system.

2)Number of elbows tabulated are for each (Vent/Flue & Combustion Air Intake) pipe.

3)Minimum requirements for each Vent/Flue & Combustion Air Intake pipe is five (5) feet in length and one elbow/tee.

4)2 1/2” or 3” diameter pipe can be used in place of 2” diameter pipe.

5)Increased Clearance Configurations using (2) 45 deg. Long Sweep el- bows should be considered equivalent to one 90 deg. elbow.

Vertical pipe terminations should be as shown in the following figure. Refer to Vent/Flue Pipe and Combustion Pipe - Termina- tion Locations for details concerning location restrictions. The penetrations through the roof must be sealed tight with proper flashing such as is used with a plastic plumbing vent.

TEE (OPTIONAL)

VENT/FLUE

COMBUSTION

AIR INTAKE

12" MIN.

SCREEN

12" MIN. TO ROOF

OR HIGHEST ANTICIPATED

SNOW LEVEL

VENT/FLUE

12" MIN.

SCREEN

12" MIN. TO ROOF

OR HIGHEST ANTICIPATED

SNOW LEVEL

Vertical Terminations (Dual Pipe)

Horizontal terminations should be as shown in the following figure. Refer to Vent/Flue Pipe and Combustion Pipe - Termination Loca- tion for location restrictions. A 2 3/8” diameter wall penetration is required for 2” diameter pipe. A3” diameter hole is required for a 2 1/2” pipe and a 3 1/2” diameter hole is required for 3” diameter pipe. To secure the pipe passing through the wall and prohibit damage to piping connections, a coupling should be installed on either side of the wall and solvent cemented to a pipe connecting the two couplings. The pipe length should be the wall thickness plus the depth of the socket fittings to be installed on the inside and outside of the wall. The wall penetration should be sealed with silicone caulking material.

12" MIN

3" MIN

24" MAX

3" MIN 24" MAX

90º	12" MIN. TO ROOF OR
MEDIUM RADIUS
ELBOW	HIGHEST ANTICIPATED
	SNOW LEVEL
SCREEN

12" MIN. TO ROOF OR HIGHEST ANTICIPATED SNOW LEVEL

Standard Horizontal Terminations (Dual Pipe)

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