Firebox Installation
Continued
| 2" X 4" Stud | |
Drywall |
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Combustible |
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Materials |
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33° |
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6" Nom. |
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(15.2 cm) |
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12" Min. |
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(30.4 cm) |
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9" Min. |
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(22.8 cm) | Fireplace Side View | |
Front | 3" Nom. | |
Face | (7.6 cm) | |
Fireplace Front View | 1 1/2" Max. | |
(3.8 cm) | ||
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Figure 4 - Mantel Clearances to
Combustible Materials
Top View of Fireplace |
| Seal Gaps with | |
| Noncombustible | ||
Drywall |
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| Mortar or Adhesive | ||
4" |
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| 2 3/4" Max. |
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| (6.98 cm) | |
(Approx.) |
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(10.1 cm) 33° |
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Nom. |
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| 4 3/8" |
| Combustible |
| Min. |
| Material Must |
6" Nom. | (11.1 cm) | Not Overlap | |
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| Black Metal | |
(15.2 cm) |
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| Front Face |
Figure 5 - Mantel Clearances to Metal
Face
Framing
1.Frame the opening for the firebox using the dimensions shown in Figures 6 and 7 depending on your installation.
2.If firebox is to be installed directly on carpeting, tile (other than ceramic) or any combustible material other than wood flooring, firebox must be installed upon a metal or wood panel extending full width and depth of firebox.
| 12 3/8" Dia. |
| (31.4 cm) Outer Pipe |
1" (2.5 cm) Min. | 2" (5.1 cm) Min. |
To Combustibles | Clearance From Outer |
| Pipes to Combustibles |
| 24" |
| (61 cm) |
| 12" |
| (31 cm) |
21 5/16" 
(54 cm)
42 5/8" 
(108 cm)
Figure 6 - Framing Clearances
3.Set firebox directly in front of opening and slide unit back until nailing flanges touch side framing.
4.Check the level of firebox and shim with sheet metal if necessary.
5.Before securing firebox to prepared fram- ing, ember protector (provided) must be placed between hearth extension (not supplied) and under bottom front edge of firebox to protect against glowing embers
(see Figure 8 and Hearth Extensions on page 6). If firebox is to be installed on a raised platform, a
(not supplied) must be fabricated to fit your required platform height (see Figure 7). The ember protector should be made of galvanized sheet metal (28 gauge mini- mum) to prevent corrosion.
6.Secure firebox to framing at nailing flanges located on sides of firebox (see
Figure 9, page 6).
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| "Z" Type |
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| Ember Protector |
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| (Not Supplied) |
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| 44 | 5 | |
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53 | Min |
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7 |
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(136 |
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as | Required |
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| Ceiling |
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| Platform Must be | ||
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| Maintain |
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| Fully Supported | |||
Figure 7 - Framing Firebox with “Z” Type
Ember Protectors
Ember | 1/2" | |
Protector | ||
(1.2 cm) | ||
(Typ. 2 of 2) | ||
Max. | ||
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Figure 8 - Ember Protectors | ||
55511E | www.desatech.com | 5 |