Amana ACV9 Alternate Vertical Termination Single Pipe, Upflow, Horizontal Termination Single Pipe

90º

MEDIUM RADIUS

ELBOWS

12" MIN.

TO ROOF OR

HIGHEST

ANTICIPATED

SNOW LEVEL

Alternate Vertical Termination (Single Pipe)

If the combustion air intake pipe is to be installed above a finished ceiling or other area where dripping of condensate will be objec- tionable, insulation of the combustion air pipe may be required. Use 1/2” thick closed cell foam insulation such as Armaflex™ or Insultube™ where required.

UPFLOW

Direct Vent (Dual Pipe) Maximum Allow able Length

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

Unit Input	Termination	Pipe(4)			Number of Elbow s(1)(2)(3)
(Btu)	Style	(inch)	1	2		3	4	5	6	7	8

INSIDE

ELBOW OR COUPLING

WALL

OUTSIDE

TEE or

90°ELBOW

TURNED

DOWN

COUPLING

MIN.
12"
FROM			12"
WALL		TO	GROUND OR
	HIGHEST ANTICIPATED
		SNOW LEVEL

45,000	Standard	2	71	68	65	62	59	56	53	50
	Alternate	2	58	55	52	49	46	43	40	37
	Standard	2	49	46	43	40	37	34	31	28
70,000		3	71	68	65	62	59	56	53	50
	Alternate	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

Horizontal Termination (Single Pipe)

12" MIN.

VENT/FLUE TEE

or

90° ELBOW TURNED

DOWN

Horizontal Termination (Single Pipe)

Above Highest Anticipated Snow Level

DIRECT VENT (DUAL PIPE) PIPING

The inlet air screens provided in the installation instruction packet are available for the installer to use in the inlet of the combustion air pipe to prevent animals from building nests in the combustion air pipe. Installation of screens, while strongly recommended, is not required and will not affect performance of the unit.

Direct vent installations require both a combustion air intake and a vent/flue pipe. The pipes may be run horizontally and exit through the side of the building or run vertically and exit through the roof of the building. The pipes may be run through an existing unused chimney; however, they must extend a minimum of 12 inches above the top of the chimney. The space between the pipes and the chimney must be closed with a weather tight, corrosion resis- tant flashing. Both the combustion air intake and a vent/flue pipe terminations must be in the same atmospheric pressure zone. Refer to Section IX, Vent/Flue and Combustion Air Pipe - Termina- tion Locations or Concentric Vent Termination for specific details on termination construction. For details concerning connection of pipes to the furnace, refer to the Section IX, Vent/Flue Pipe and Combustion Pipe - Standard Furnace Connections or Alternate Furnace Connections.

VENT/FLUE AND COMBUSTION AIR PIPE LENGTHS AND DIAMETERS

Refer to the following table for applicable length, elbows, and pipe diameter for construction of the vent/flue and combustion air intake pipe systems of a direct vent (dual pipe) installation. The number of elbows tabulated represents the number of elbows and/or tees in each (Vent/Flue & Combustion Air Intake) pipe. Elbows and/or tees used in the terminations must be included when determining the number of elbows in the piping systems.

COUNTERFLOW

Direct Vent (Dual Pipe) Maximum Allow able Length

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

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

(1)Elbows and/or Tees used in the terminations must be included when determining the number of elbows in the piping system.

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

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

(4)3” diameter pipe can be used in place of 2” diameter pipe.

VENT/FLUE AND COMBUSTION AIR PIPE TERMINATIONS

The vent/flue and combustion air pipes may terminate vertically, as through a roof, or horizontally, as through an outside wall. Vertical pipe terminations should be as shown in the following figure. Refer to Section IX, Vent/Flue Pipe and Combustion Pipe - Termination 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

		VENT/FLUE
COMBUSTION	90º
	MEDIUM RADIUS
AIR INTAKE	ELBOWS

12" MIN.

12" MIN.

TO ROOF OR SCREEN

HIGHEST

ANTICIPATED

SNOW LEVEL

24" MAX. 3" MIN.

Vertical Terminations (Dual Pipe)

17