Hearth and Home Technologies ST-550TM-IPI owner manual Vent Diagrams, V1 Minimum H1 Maximum

F. Vent Diagrams

General Rules:

•A maximum of three 90° elbows (or six 45° elbows) may be used in any vent configuration. Some elbows may be installed horizontally. See Figure 7.6.

•Elbows may be placed back to back anywhere in the system as long as the first 90° elbow is a starter elbow.

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

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

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

1.Top Vent - Horizontal Termination One Elbow

WARNING**

Fire Risk.

•When using SLP-HRC-SS and SLP-HRC-ZC-SS termination caps on top vented fireplaces, a two foot minimum vertical vent section is required before

installing first elbow.

•When using DVP-TB1 termination cap on top vented fireplaces, a three foot minimum vertical vent section is required before installing first elbow.

•When using any other cap, a section of vertical pipe (12 inches minimum) MUST be installed prior to attaching a 90° elbow.

V1 Minimum**			H1 Maximum
1 ft.**		305 mm	2 ft.	610 mm
2 ft.**		610 mm	3 ft.	914 mm
3 ft.**		915 mm	5 ft.	1.5 m
4 ft.		1.2 m	7 ft.	2.1 m
5 ft.		1.5 m	14 ft.	4.3 m
		H Max. =14 ft. (4.3 m)
	V + H Max. = 40 ft. (12.2 m)
		** See Warning below.
		Note: There MUST be a 25%
		reduction in total H when using
		flex vent except when using the
		simple up and out installation
		(see Figure 7.3).

V1

H1

Figure 7.4

26 Heat & Glo • ST-550TM-IPI • 2142-900 Rev. B • 11/08