8 Vent Clearances and Framing

A. Pipe Clearances to Combustibles

WARNING! Risk of Fire! Maintain air space clearance to vent. DO NOT pack insulation or other combustibles:

•Between ceiling firestops

•Between wall shield firestops

•Around vent system

Failure to keep insulation or other material away from vent pipe may cause over heating and fire.

Note: Heat shields MUST overlap by a minimum of 1-1/2 in. (38 mm).

•DVP heat shield - designed to be used on a wall 4 in. to 7-1/4 in. (102 mm to 184 mm) thick.

•If wall thickness is less than 4 in. the existing heat shields must be field trimmed. If wall thickness is greater than 7-1/4 in. a DVP-HSM-B will be required.

•SLP heat shield - designed to be used on a wall 4-3/8 in. to 7-5/8 in. (111 mm to 194 mm thick).

•If wall thickness is less than 4-3/8 the existing heat shields must be field trimmed. If wall thickness is greater than 7-5/8 in. a DVP-HSM-B will be required.

B. Wall Penetration Framing

Combustible Wall Penetration

Frame a hole in a combustible wall for an interior wall shield firestop, (Figure 8.2) whenever a wall is penetrated.

The opening must be framed on all four sides using the same size framing materials as those used in the wall construction. The wall shield firestop maintains minimum clearances and prevents cold air infiltration.

Non-Combustible Wall Penetration

If the hole being penetrated is surrounded by non-combus- tible materials such as concrete, a hole with diameter 1 in. greater than the pipe is acceptable.

Whenever a non-combustible wall is penetrated, the wall shield firestop is only required on one side and no heat shield is necessary.

(DVP-SLP Pipe Shown)

Heat

3 in. (76 mm)

If your local inspector requires the wall shield firestop on both sides, then both wall shield firestops must have a heat shield attached to them.

3 in. (76 mm) top clearance

1 in. (25 mm) clearance around vertical sections

Shield

top clearance *

 

Heat

 

Shield

 

1 in. (25 mm)

Wall

clearance

Shield

bottom & sides

Firestop

 

 

WALL

12 in.

The center of the framing hole is

1 in. (25mm) above the center of the horizontal vent pipe.

10 in.

Vent framing hole.

DO NOT PACK WITH

INSULATION OR

OTHER MATERIAL.

Heat Shield

3 in. (76 mm) top clearance *

Heat

Shield

Framing should be constructed of 2 X 4 lumber or heavier.

A*

B*

Wall

Shield

Firestop

WALL

1 in. (25 mm) clearance bottom & sides

* To center of pipe.

 

 

A

B

Model

 

Top Vent

Rear Vent

NDV3630

in.

39-1/2

23-1/2

NDV3933

 

 

 

NDV4236

 

 

 

*When using SLP pipe, minimum clearances from the vent pipe to combus- tible materials at inside wall firestops are: Top: 2-1/2 in. (64 mm)

Bottom: 1/2 in. (13 mm)

Sides: 1 in. (25 mm)

Figure 8.1 Pipe Clearances

NDV4842

mm

1003

597

 

 

 

Figure 8.2 Wall Penetration DVP only

34

Heatilator • Novus NDV Series • 4055-187 Rev. V • 1/12

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Hearth and Home Technologies 4055-187 owner manual Vent Clearances and Framing, Pipe Clearances to Combustibles
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4055-187 specifications

Hearth and Home Technologies (HHT) has long been a leader in the fireplace and home heating sector, providing innovative solutions that enhance comfort and aesthetics in homes across the globe. One of their standout offerings is the HHT 4055-187 model, which showcases a harmonious blend of functionality and design, making it a highly sought-after option for both new constructions and remodels.

The HHT 4055-187 is a gas fireplace, revered for its efficiency and convenience. One of its main features is the direct vent technology, which allows for safe and efficient venting of combustion gases directly outside. This not only improves the air quality indoors but also enables the fireplace to be installed in virtually any location without the need for a traditional chimney. With its aesthetic appeal, the 4055-187 boasts a customizable design, allowing users to choose from various media options, including pebbles or logs, to personalize their fireplace experience.

In terms of performance, the HHT 4055-187 is engineered for efficiency. It provides a considerable heat output, ensuring rooms are warmed quickly and effectively. The fireplace includes features such as adjustable flame height and temperature control, allowing users to customize their heating experience based on their comfort preferences. The inclusion of an intuitive remote control system further enhances user convenience, enabling effortless adjustments from across the room.

The model's LED lighting also adds a contemporary touch, creating an inviting ambiance even when the fireplace is not in use. The HHT 4055-187 is built with impressive durability, utilizing high-quality materials designed to withstand the rigors of regular use while maintaining its sleek appearance.

Safety features are paramount, making this model an ideal choice for families. The unit includes automatic shut-off mechanisms and tempered glass to protect against accidental contact. Additionally, its innovative design minimizes the risk of accidental fuel leaks, ensuring peace of mind for homeowners.

In summary, the Hearth and Home Technologies 4055-187 is more than just a heating appliance; it is a centerpiece that combines modern technology, aesthetic flexibility, and safety for a truly impressive fireplace experience. Whether you are seeking warmth on a chilly evening or looking to enhance your living space with a focal point, the HHT 4055-187 stands out as a reliable and stylish choice.
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