Bryant 340MAV AirIntake Housing Plug Fitting Drain, Maximumallowable Pipe Length Ft Continued

TABLE 7—MAXIMUM ALLOWABLE PIPE LENGTH (FT) (CONTINUED)

ALTITUDE (FT)	UNIT SIZE	TERMINATION	PIPE DIA			NUMBER OF 90° ELBOWS
		TYPE	(IN.)*	1	2		3	4	5	6
	024040	2 Pipe or 2-in	1-1/2	46	41		36	31	29	24
	036040	Concentric	2	62	60		58	56	55	53
	024060	2 Pipe or 2-in	1-1/2	11	6		NA	NA	NA	NA
	036060
		Concentric	2	49	44		42	37	35	34
	048060
	036080	2 Pipe or 2-in	2	33	28		17	12	10	NA
8001 to 9000‡	048080
		Concentric	2-1/2	62	60		58	56	55	53
	060080
	048100	2 Pipe or 3-in	2-1/2	23	15		7	5	NA	NA
	060100	Concentric	3	59	54		49	44	39	34
	060120	2 Pipe or 3-in.	3† no disk	10	NA		NA	NA	NA	NA
		Concentric	4† no disk	35	30		25	20	15	10
	060140				NA
ALTITUDE (FT)	UNIT SIZE	TERMINATION	PIPE DIA			NUMBER OF 90° ELBOWS
		TYPE	(IN.)*	1	2		3	4	5	6
	024040	2 Pipe or 2-in	1-1/2	42	37		32	27	25	20
	036040	Concentric	2	57	55		53	51	49	47
	024060	2 Pipe or 2-in
	036060		2	45	40		38	33	31	29
		Concentric
	048060
	036080	2 Pipe or 2-in	2	30	25		14	9	7	NA
9001 to 10,000‡	048080
		Concentric	2-1/2	57	55		53	51	49	47
	060080
	048100	2 Pipe or 3-in	2-1/2	21	13		5	NA	NA	NA
	060100	Concentric	3	54	49		44	39	34	29
	060120	2 Pipe or 3-in.	4† no disk	10	5		NA	NA	NA	NA
		Concentric
	060140				NA

Disk usage-Unless otherwise specified, use perforated disk assembly (factory-supplied in loose parts bag). If one disk is stated, separate 2 halves of perforated disk assembly and use shouldered disk half. When using shouldered disk half, install screen side toward inlet box.

†Wide radius elbow.

‡Vent sizing for Canadian installations over 4500 ft (1370 m) above sea level are subject to acceptance by the local authorities having jurisdiction. NA-Not Allowed; pressure switch will not make.

NOTES:

1.Do not use pipe size greater than those specified in table or incomplete combustion, flame disturbance, or flame sense lockout may occur.

2.Size both the combustion-air and vent pipe independently, then use the larger diameter for both pipes.

3.Assume two 45° elbows equal one 90° elbow. Long radius elbows are desirable and may be required in some cases.

4.Elbows and pipe sections within the furnace casing and at the vent termination should not be included in vent length or elbow count.

5.The minimum pipe length is 5 ft for all applications.

6.Use 3-in. diameter vent termination kit for installations requiring 4-in diameter pipe.

COMBUSTION – AIR

INTAKE HOUSING

3/8" ID TUBE	BURNER
	BOX

WARNING: Inducer housing outlet cap must be in- stalled and fully seated against inducer housing. Clamp must be tightened to prevent any condensate leakage. Failure to follow this warning could result in electrical shock, fire, personal injury, or death.

3/16"

DRILL

COMBUSTION – AIR PIPE

c. Install pipe support (factory-supplied in loose parts bag)

into selected furnace casing vent pipe hole. Pipe support

TRAP

4″

MIN

should be positioned at bottom of casing hole.

WARNING: Vent pipe must be installed and fully seated against inducer housing internal stop. Clamp must

TO OPEN

DRAIN

A93035

Fig. 35—Air Intake Housing Plug Fitting Drain

b.Reposition elastometric (rubber) inducer housing outlet cap and clamp to appropriate unused inducer housing connection. Tighten clamp.

—29—

be tightened to prevent any condensate leakage. Failure to follow this warning could result in electrical shock, fire, personal injury, or death.

NOTE: A 2-in. diameter pipe must be used within the furnace casing. Make all pipe diameter transitions outside furnace casing.

d. Be certain that mating surfaces of inducer housing connection, elastomeric coupling, and 2-in. diameter vent pipe are clean and dry. Assemble the elastomeric (rubber) vent coupling (with 2 loose clamps) onto inducer housing connection. Insert the 2-in. diameter vent pipe through the elastomeric (rubber) coupling and