Справочник Пользователя для Quadra-Fire SAPPHIRE-D-MBK

11

Quadra-Fire  •  Sapphire  •  7055-116  Rev. D  •  6/11

INDIVIDUAL INSTALLATIONS MAY VARY.  

Percentage closed based on full range of the fl ue restric-

tor travel.

1.  Measure the distance from the top of appliance 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 fl ue vent to the center of the 90° elbow is 7 ft. (2 m), 
the horizontal run to the outer wall fl ange must not exceed 
13 ft. 2 in. (5m).

EXAMPLE 2: If the vertical dimension from the center line 
of the fl ue vent is 21 ft. (6m), the horizontal run to the outer 
wall fl ange must not exceed 10 ft. (3m).

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 vent pipe 
run. A single vertical to horizontal 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).

Max Horizontal Run, 
Rear Vent

3 ft (914mm)

Max Horizontal Run

15 ft (5m) when vertical rise is 
10 ft (3m

Max Horizontal Run 
with 45

o

 Elbow

14 in. (356mm)

Min Horizontal Run

11 in. (279mm)

Max Wall Thickness

20 in. (508mm)

Min Wall Thickness

4 in. (102mm)

Exterior Vent Diameter

6-5/8 in. (168mm)

Inner Vent Diameter

4 inches (101mm)

Rear Vent with Vertical 
Rise

Min of 2 ft vertical (610mm) 
must be used prior to any hori-
zontal run

Horizontal Run requires a 1/4 in. (6mm) rise for every 1 ft 
toward the termination. 

Horizontal Run requires a non-combustible support every 
3 ft (914mm), i.e., plumbing tape

Standard Horizontal Run 

Horizontal Run with Snorkel Kit. 

A rear vent configuration with 3 ft. (914mm) maximum 
horizontal run with no vertical pipe and with 1/4 in. 
(6mm) rise per foot.

•  A snorkel kit must be used. 

•  A derating orifice must be installed. The appropriate 

orifice is supplied with the rear vent kit.

Example 2

     11"   2'        4'         6'        8'       10'      12'      14'  15'

30'

28'

26'

24'

22'

20'

18'

16'

14'

12'

10'

 8'

 6'

 4'

 2'

 0'

(MAX)

(MIN)

40'

38'

36'

34'

32'

Example 1

Vertical Distance 

from Appliance Top 

to 90

o

 Elbow

40 ft. (12m) 

Maximum Run if 

using Stainless 

Steel Inner Pipe 

Material

30 ft. (9m) Maxi-

mum Run if using 

Aluminum Inner 

Pipe Material

Flue Restrictor more 
CLOSED in this area

Flue Restrictor 
50% CLOSED in 
this area

Flue Restrictor 
OPEN in this area

Snorkel Kit