Quadra-Fire QFP44 owner manual Vent Diagrams, Top Vent Horizontal Termination, One Elbow

E. Vent Diagrams

To replace the rst starter elbow with two 45° elbows, refer to Figure 7.4. All other 90° elbows can be replaced with two 45° elbows.

General Rules:

•SUBTRACT 3 ft. from the total H measurement for each 90° elbow installed horizontally.

•SUBTRACT 1-1/2 ft. from the total H measurement for each 45° elbow installed horizontally.

•A maximum of three 90° elbows (or six 45° elbows) may be used in any vent con guration. Some elbows may be installed horizontally. See Figure 7.9.

•Elbows may be placed back to back anywhere in the system as long as the rst 90° elbow is a starter elbow except as shown in Figure 7.4.

•When penetrating a combustible wall, a wall shield restop must be installed.

•When penetrating a combustible ceiling, a ceiling restop must be installed.

•Horizontal runs of vent do not require vertical rise; horizontal runs may be level.

1. Top Vent - Horizontal Termination

One Elbow

V1

H1

V1 Min.	V1 Max.	H1 Max.
3 ft (.91 m)	-	1.5 ft (.46 m)
4 ft (1.22 m)	-	6 ft (1.83 m)
5 ft (1.52)	-	11 ft (3.35 m)
6 ft (1.83 m)	-	13 ft (3.96 m)
7 ft (2.13 m)	-	15 ft (4.57 m)
10 ft (3.05 m)	25 ft (7.62 m)	20 ft (6.10 m)

Figure 7.3

30 Quadra-Fire • QFP44 • 4051-300 Rev M • 09/08