Hearth & Home Technologies GARNET-D-PMH ユーザーズマニュアル

September 1, 2008

Page  11

Quadra-Fire · Garnet-T · 7016-127F

The maximum horizontal vent run is 15 ft. (5m) when the 
vertical vent rise is 10 ft. (3m).

Horizontal sections require a 1/4 in. (6mm) rise for every 12 
in. (305mm) of horizontal travel.

Exterior Vent Diameter = 6-5/8 in. (168mm); Inner Vent 
Diameter = 4 in. (102mm)

Horizontal sections require noncombustible support every 3 
ft. (914mm), e.g. wall straps.

For any vertical termination a minimum of 6 in. (152mm) 
vertical must be used.

6 in. (152mm) 
Minimum starter pipe 

30 in. (762mm) Maximum Horizontal run with no 
vertical pipe and with 1/4 in. (6mm) rise per foot. 
Must use approved Termination Cap.

25 ft.  (8m)  

Maximum Vertical 

Termination 
cap

 Termination Cap

6 ft. (2m) Minimum  
Vertical Termination  

 

 

 

 

 

25' 

24' 

 

22' 

 

20' 

 

18' 

 

16' 

 

14' 

 

12' 

 

10' 

 

8' 

 

6' 

 

4' 

 

2' 

    2'        4'         6'        8'        10'      12'     14'  15' 

Example 1 

Example 2 

 

Adjust 

Intake 

Damper 

Install Flue 

Restrictor 

1.  Measure the vertical distance from the center line of the 

flue pipe to the center of the 90° elbow. On the graph 
below, draw a horizontal line from that measurement 
on the vertical axis across until it intersects with the 
slanted  line.

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

the bottom of the graph.

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

graph is the maximum length of the horizontal run. 

EXAMPLE 1: If the vertical dimension from the center line 
of the flue vent to the center of the 90° elbow is  7 ft. (2m), 
the horizontal run to the outer wall flange must not exceed 
9 ft.-8 in. (3m).

EXAMPLE 2: If the vertical dimension from the center line 
of the flue vent is 21 ft. (6m), the horizontal run to the outer 
wall flange must not exceed 4 ft.-3 in. (1m).

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

pipe and each 45° elbow is equivalent to 1 ft. (305mm) 
of vent pipe, and must be subtracted from the vent pipe 
run. A single horizontal to vertical 90° elbow is already 
calculated into the allowable 15 ft. (5m) run. Each 
additional 90° elbow reduces the maximum horizontal 
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.; 15 ft. 
max. - 6 ft. = 9 ft. max.).

*In the Commonwealth of Massachusetts, the word damper 
shall be replaced with the words flue restrictor.