D. How to Use the Vent Graph

E. Venting Guidelines

1. Measure the vertical distance from the top of appliance

NOTES

 

to the center of the 90° elbow. On the graph below, draw

The maximum horizontal vent run is 20 ft (6m) when

 

a horizontal line from that measurement on the vertical

the vertical vent rise is 10 ft. (3m).

 

axis across until it intersects with the slanted line.

The minimum horizontal vent run is 6 in. (152mm).

2.

From the point of this intersection, draw a vertical line to

Horizontal sections require a 1/4 in. (6mm) rise for

 

the bottom of the graph.

 

every 12 in. (305 mm) of horizontal travel.

3.

The point at which this line meets the bottom line of the

Exterior Vent Diameter = 6-5/8 in. (168mm); Inner

 

graph is the maximum length of the horizontal run.

 

Vent Diameter = 4 in. (102mm).

 

 

EXAMPLE 1: If the vertical dimension from the center line of

Horizontal sections require noncombustible support

the fl ue vent to the center of the 90° elbow is 7 ft. (2.13 m),

every 3 ft. (914mm), e.g. wall straps.

the horizontal run to the outer wall fl ange must not exceed

For any vertical termination a minimum of 6 ft. (2m)

16 ft. (5m).

vertical must be used.

EXAMPLE 2: If the vertical dimension from the center line of

Minimum vertical from appliance top before adding

an elbow is 2 in. (51mm).

the fl ue vent is 21 ft. (6m), the horizontal run to the outer wall

 

fl ange must not exceed 12 ft. 10 in. (4m).

EXCEPTIONS FOR HORIZONTAL INSTALLATIONS:

4. Each 90° elbow is equivalent to 3 ft. (914mm) of vent

*Wheninstallingthisapplianceinarearventconfiguration

with no vertical rise, a Snorkel Kit must be used.

 

pipe and each 45° elbow is equivalent to 1 ft. (305mm)

*The maximum horizontal vent run is 3 ft. (914mm)

 

of vent pipe, and must be subtracted from vent pipe

 

run. A single vertical to horizontal 90° elbow is already

*The maximum horizontal vent run with a 45° elbow is 2

 

calculated into the allowable 20 ft. (6m) run. Each

ft. (609mm).

 

additional 90° elbow reduces the maximum horizontal

*The minimum horizontal vent run is 6 in. (152mm).

 

distance by 3 ft. (914mm).

 

EXAMPLE: The use of 3 elbows would reduce the allowable horizontal run to 9 ft. (3 -1 = 2 elbows x 3 ft. = 6 ft.; 20 ft. max. - 6 ft. = 14 ft. max.).

NOTE: IF YOUR INSTALLATION FALLS

 

 

Part #SLK-991DA

 

 

 

 

 

 

 

 

 

40 ft. Maximum Vertical

 

 

 

 

 

 

 

 

 

 

 

 

 

 

WITHIN

A

SHADED

AREA

ON

THE

40'

 

 

 

 

 

 

 

 

 

 

 

 

 

 

39'

 

 

 

 

 

 

 

 

 

 

 

 

 

GRAPH, THE DAMPER MUST BE USED.

 

38'

 

 

 

 

 

 

 

 

 

 

 

 

 

 

37'

 

 

 

 

 

 

 

 

 

 

 

 

 

SEE

INFORMATION

ON

DAMPER

 

36'

 

 

 

 

 

 

 

 

 

 

 

 

 

 

35'

 

 

 

 

 

 

 

 

 

 

 

 

 

ADJUSTMENT ON PAGE 34.

 

 

 

34'

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

32'

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

30'

 

 

 

 

 

 

 

 

 

 

 

 

 

NOTE:

In

the

Commonwealth

of

 

28'

Damper position

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

26'

more CLOSED in

 

 

 

 

 

 

 

 

 

 

Massachusetts,

the

word

damper

 

24'

 

this area

 

 

 

 

 

 

 

 

 

 

Example 2

 

 

 

 

 

 

 

 

 

 

 

 

 

shall be replaced with the words flue

22'

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

restrictor.

 

 

 

 

 

 

20'

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

18'

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VERTICAL DISTANCE FROM

16'

 

 

 

Damper position

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

APPLIANCE TO 90° ELBOW

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

14'

 

 

more OPEN in this

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

12'

 

 

 

 

area

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

10'

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Example 1

8'

 

 

 

 

 

 

 

 

 

 

 

 

HHW2

 

 

 

 

 

 

 

 

 

 

 

 

No Damper

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

6'

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4'

 

 

in this area

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2'

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2'

4'

6 '

8'

10'

12'

14'

15'

16'

17'

18'

19'

20'

6 ft. Min. Vertical

 

Termination

3 ft. (91 cm) Maximum Horizontal run with no

 

 

vertical pipe and with 1/4 in. (6.35 mm) rise per

C

foot. Must use Snorkel cap.

L

 

CL For rear vent or top of stove for top vent.

6 in. Min. starter pipe

Figure 5.2

July 29, 2008

Quadra-Fire · Castile Gas Stove · 7023-111E

Page 11

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Quadra-Fire CASTILE-GAS-PMH How to Use the Vent Graph Venting Guidelines, Exceptions for Horizontal Installations