Goodman Mfg MH95/ACSH96/AMEH96/ GCH95/GME95/GCH9 Alternate Vent/Flue Location

5

ADDITIONAL PLUG FROM DRAIN KIT

7

EXTERNALLY

MOUNT

RUBBER ELBOW

6

SECURE TO

ID BLOWER WITH

RUBBER COUPLING

AND HOSE

CLAMPS

COUNTERFLOW/UPRIGHT

(UPFLOW SIMILAR)

6
SECURE TO
ID BLOWER WITH	6
RUBBER COUPLING	SECURE TO
AND HOSE	CABINET WITH
CLAMPS	SCREWS

UPFLOW/HORIZONTAL

(COUNTERFLOW SIMILAR)

Alternate Vent/Flue Location

NON-DIRECT VENT (SINGLE PIPE) PIPING

Non-direct vent installations require only a vent/flue pipe. The vent pipe can be run horizontally with an exit through the side of the building or run vertically with an exit through the roof of the building. The vent can also be run through an existing unused chimney; however, it must extend a minimum of 12 inches above the top of the chimney. The space between the vent pipe and the chimney must be closed with a weather-tight, corrosion-resistant flashing. For details concerning connection of the vent/flue pipe to the fur- nace, refer to Vent/Flue Pipe and Combustion Air - Standard Fur- nace Connections or Alternate Furnace Connections for specific details. Refer to the following Non-Direct Vent (Single Pipe) Piping

-Vent/Flue Pipe Terminations for specific details on termination construction.

Although non-direct vent installations do not require a combustion air intake pipe, a minimum of one 90° elbow should be attached to the furnace’s combustion air intake if: an upright installation uses the standard intake location. This elbow will guard against inad- vertent blockage of the air intake.

VENT/FLUE PIPE LENGTHS AND DIAMETERS

Refer to the following table for applicable length, elbows, and pipe diameter for construction of the vent/flue pipe system of a non- direct vent installation. In addition to the vent/flue pipe, a single 90° elbow should be secured to the combustion air intake to prevent inadvertent blockage. The tee used in the vent/flue termination must be included when determining the number of elbows in the piping sys- tem.

*MH95/ACSH96/AMEH96/GCH95/GME95 Direct Vent (2 - Pipe) and Non-Direct Vent (1- Pipe) (6)

Maximum Allowable Length of Vent/Flue Pipe & Combustion Air Pipe (ft) (1) (2)

Unit Input	Pipe				Number of Elbows (3) (5)
	Size (4)	0	1	2		3	4	5	6	7	8
(Btu)	(in.)
40,000	2	100	95	90		85	80	75	70	65	60
	or 2 1/2
45,000	2	250	245	240		235	230	225	220	215	210
	or 2 1/2
60,000	2	110	105	100		95	90	85	80	75	70
	or 2 1/2
70,000	2	220	215	210		205	200	195	190	185	180
	or 2 1/2
80,000	2	35	30	25		20	15	10	Not Applicable
	or 2 1/2
80,000	3	132	125	118		111	104	97	90	83	76
90,000	2	45	40	35		30	25	20	Not Applicable
	or 2 1/2
90,000	3	147	140	133		126	119	112	105	98	91
100,000	3	98	91	84		77	70	63	56	49	42
115,000	3	140	133	126		119	112	105	98	91	84

1)Maximum allowable limits listed on individual lengths for inlet and flue and NOT a combination.

2)Minimum requirement for each vent pipe is five (5) feet in length and one elbow/tee.

3)Tee used in the vent/flue termination must be included when determining the number of elbows in the piping system.

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 elbows should be considered equivalent to one 90 deg. elbow.

6)One 90° elbow should be secured to the combustion air intake connec- tion.

VENT/FLUE PIPE TERMINATIONS

NOTE: If either a 90 degree or 45 degree elbow is used for termina- tion, it must be pointed downward.

The vent/flue pipe may terminate vertically, as through a roof, or horizontally, as through an outside wall.

Vertical vent/flue pipe terminations should be as shown in the fol- lowing figure. Refer to Vent/Flue Pipe and Combustion Air Pipe - Termination Locations for details concerning location restrictions. The penetration of the vent through the roof must be sealed tight with proper flashing such as is used with a plastic plumbing vent. Horizontal vent/flue pipe terminations should be as shown in the following figure. Refer to Section IX, Vent/Flue Pipe and Combus- tion Air Pipe - Termination Locations for details concerning loca- tion restrictions. A 2 3/8” diameter wall penetration is required for 2” diameter pipe. A 3” 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 length of pipe connecting the two couplings. The length of pipe 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 sili- cone caulking material.

In a basement installation, the vent/flue pipe can be run between joist spaces. If the vent pipe must go below a joist and then up into the last joist space to penetrate the header, two 45° elbows should be used to reach the header rather than two 90° elbows.

NOTE: Terminate both pipes in the same pressure zone (same side of roof, no major obstacles between pipes, etc.)

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