Instruction manual

ManualsBrandsAmana ManualsHeating SystemGCCA

Horizontal vent/flue pipe terminations should be as shown

in the following figure. Refer to

Section IX, Vent/Flue Pipe

and Combustion Air Pipe - Termination Locations

for

details concerning location restrictions. A 2 3/8” diameter

wall penetration is required for 2” diameter pipe while 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 in-

stalled 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

silicone caulking material.

MIN.

12"

FROM

WALL

12"

TO GROUND OR

HIGHEST ANTICIPATED

SNOW LEVEL

WALL

INSIDE

OUTSIDE

TEE

90°ELBOW

TURNED

DOWN

COUPLING

ELBOW OR

COUPLING

Horizontal Termination (Single Pipe)

12" MIN.

VENT/FLUE TEE

90° ELBOW TURNED

DOWN

12" MIN. ABOVE

HIGHEST ANTICIPATED

SNOW LEVEL

Horizontal Termination (Single Pipe)

Above Highest Anticipated Snow Level

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.

DIRECT VENT (DUAL PIPE) PIPING

Direct vent

installations require both a combustion air

intake and a vent/flue pipe. The pipes may be run horizon-

tally 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

resistant flashing. Both the combustion air intake and a

vent/flue pipe terminations must be in the same atmo-

spheric pressure zone. Refer to

Section IX, Vent/Flue and

Combustion Air Pipe - Termination Locations or Concen-

tric 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 repre-

sents 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.

If the combustion air intake pipe is to be installed above a

finished ceiling or other area where dripping of condensate

will be objectionable, insulation of the combustion air pipe

may be required. Use 1/2” thick closed cell foam insulation

such as Armaflex or Insultube where required.

2345678

Standard 2 68 65 62 59 56 53 50

Alternate 2 55 52 49 59 56 53 50

Standard 2 68 65 62 46 43 40 37

Alternate 2 55 52 49 46 43 40 37

Standard 2 55 52 49 46 43 40 37

Alternate 2 42 39 36 46 43 40 37

Standard 2 26 23 20

Alternate 2 7 10

Standard 3 88 84 80 76 72 68 64

Alternate 3 74 70 66 62 58 54 50

45,000

115,000

Number of Elbows

(1)(2)(3)

Not Recommended

Unit

Input

(Btu)

Vent/Flue/Air

Intake

Termination

Pipe

Size

(in.)

Direct Vent (Dual Pipe)

Maximum Allowable Len

th of Vent/Flue & Combustion

Air Intake Pipe

(

)

115,000

90,000

70,000

(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.

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 con-

cerning location restrictions. The penetrations through the

roof must be sealed tight with proper flashing such as is

used with a plastic plumbing vent.