Lennox Hearth LMDVR-3328-CPM Manufactured Home Requirements, Vertical Vent Termination Clearances

MANUFACTURED HOME

REQUIREMENTS

This appliance may be installed in an after- market permanently located, manufactured

Vertical Vent Termination Clearances

TERMINATION HEIGHTS FOR VENTS ABOVE FLAT OR SLOPED ROOFS

Horizontal Overhang

Termination Heights For Vents Above Flat Or Sloped Roofs Ref. NFPA 54 / ANSI Z223.1, 7.6

home (USA only) or mobile home, where not prohibited by local codes.

Cet appareil peut être installé dans un maison préfabriquée (É.-U. seulement) ou mobile déjà installée à demeure si les réglements locaux le permettent.

Manufactured Home installations must be

2 FT MIN.

Vent

Termination

Storm Collar

Flashing

2 FT	Vertical
MIN.	Wall

Lowest

Discharge

Opening

H*

X

12

Roof Pitch is X/12

Roof Pitch	* Feet	*Meters
Flat to 6/12	1.0	0.3
6/12 to 7/12	1.25	0.38
7/12 to 8/12	1.5	0.46
8/12 to 9/12	2.0	0.61
9/12 to 10/12	2.5	0.76
10/12 to 11/12	3.25	0.99

installed in accordance with these instructions and the following standards / codes:

•Manufactured Home Construction and Safety Standard Title 24 CFR, Part 3280, or the current Standard for Fire Safety Criteria for Manufactured Home Installations, Sites and Communities ANSI / NFPA 501A in the USA, and CAN / CSA Z240 MH Mobile Home Standard in Canada

•(when applicable) The American National Standard for Manufactured Homes (NCSBCS / ANSI A225.1 - latest edition).

		1 inch (25.4 mm) Minimum
		Clearance to Combustibles
Concentric	*H = MINIMUM HEIGHT FROM ROOF TO
Vent Pipe	LOWEST DISCHARGE OPENING OF VENT

The vent / air intake termination clearances above the high side of an angled roof is as shown in the following chart:

Figure 5

11/12 to 12/12	4.0	1.22
12/12 to 14/12	5.0	1.52
14/12 to 16/12	6.0	1.83
16/12 to 18/12	7.0	2.13
18/12 to 20/12	7.5	2.29
20/12 to 21/12	8.0	2.44

CAUTIONS

Horizontal Vent Termination Clearances

Ensure that the cross members are not cut or weakened during installation. The structural integ- rity of the manufactured home floor, wall, and ceiling / roof must be maintained.

This appliance must be grounded to the chassis of the manufac- tured home in accordance with local codes or in the absence of local codes, with the National Electrical Code ANSI / NFPA 70

Combustible Projection 2-1/2 inches or less in length

Combustible Projection greater than 2-1/2 inches in length

Ventilated

Soffit Unventilated

Soffit

			3"
18"	12"
		(76 mm)
(457 mm)	(305 mm)

Side Elevation View

Termination Kit

All horizontal terminations
may be located as close as
6” (152mm) to any
(non-combustible and
combustible) exterior
sidewall. This distance
may be decreased to 2”
(51mm) for non-
combustible exterior
sidewalls only, if the
SV4.5HT-2 termination
is used.	Termination Kit

-latest edition or the Canadian Electrical Code CSA C22.1 - latest edition.

Vent Termination Clearances

These instructions should be used as a guide- line and do not supersede local codes in any way. Install vent according to local codes, these instructions, the current National Fuel Gas Code (ANSI-Z223.1) in the USA or the current standards of CAN/CGA-B149.1 and -B149.2 in Canada.

Terminate multiple vent terminations according to the installation codes listed above.

Terminate single vent caps relative to building components according to Figure 5.

Figure 6	Note - See Figure 35 on Page 20 for the exterior wall recess
	allowances of the square horizontal termination.

Horizontal Vent Termination Clearances

The horizontal vent termination must have a minimum of 3" (76 mm) clearance to any overhead combustible projection of 2 1/2" (64 mm) or less. See Figure 6. For projections exceeding 2 1/2" (64 mm), see Figure 6. For additional vent location restrictions refer to Figure 7 on Page 8.

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.