NVB Series
Clearance to Combustibles
Appliances |
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Top | 0” (0 mm) |
Bottom | 0” (0 mm) |
Side | 0” (0 mm) |
Back | 0” (0 mm) |
Perpendicular Sidewall | 0” (0 mm) |
Top of unit to ceiling | 36” (914 mm) |
Front of unit to combustibles | 36” (914 mm) |
Venting |
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1” (25 mm) |
Mantels\
The height that a combustible mantel is fitted above the fireplace is dependent on the depth of the mantel. This also applies to the distance between the mantel leg (if fitted) and the fireplace.
For the correct mounting height and widths refer to Figures 5a and 5b
The distances and reference points are not affected by the fitting of a bay window front trim kit.
Noncombustible mantels and legs may be installed at any height and width around the appliance.
When using paint or lacquer to finish the mantel, such paint or lacquer must be heat resistant to prevent discoloration.
Side View | V |
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| A | B | C |
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| D | E |
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| Fireplace |
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| Top of Combustion | |
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| Chamber | |
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| CFM146 |
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Ref. |
| Mantel |
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| Mantel From Top | |||||
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| Shelf Depth |
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| of Comb. Chamber | |||||
V |
| 14" (356 mm) |
| A |
| 18" | (457 mm) | ||||||
W |
| 12" (305 mm) |
| B |
| 16" | (406 mm) | ||||||
X |
| 10" (254 mm) |
| C |
| 14" | (356 mm) | ||||||
Y |
| 8" (203 mm) |
| D |
| 12" | (305 mm) | ||||||
Z |
| 1¹⁄₂" (38 mm) |
| E |
| 8" | (203 mm) | ||||||
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Fig. 5a | Mantel clearances. |
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J | I H |
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| Black Sur- |
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Mantel |
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| round Face |
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CFM164 | Leg |
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| Side of |
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| L |
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| M |
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| Combustion Chamber |
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| N |
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| CFM170 | |
Ref. |
| Mantel | Ref. | Mantel Leg From |
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| Leg Depth |
| of Comb. Opening | |||
F |
| 14" (356 mm) | K | 14" | (356 mm) | ||
G |
| 12" (305 mm) | L | 12" | (305 mm) | ||
H |
| 10" | (254 mm) | M | 10" | (254 mm) | |
I |
| 8" | (203 mm) | N | 8" | (203 mm) | |
J |
| 1¹⁄₂" (38 mm) | O | 1¹⁄₂" | (38 mm) | ||
Fig. 5b | Combustible mantel leg minimum installation. |
Hearth
A hearth is not mandatory but is recommended for aesthetic purposes. We recommend a noncombustible hearth.
Insulating For Cold Climates
When an appliance is installed in a chase or an outside wall, the enclosure should be insulated like any other wall of the home. Insulation should be installed under the appliance and on the inside of the exterior walls.
In a chase, it is a good idea to install a firestop at the first ceiling level above the appliance. Also, install insu- lation on the side walls. Insulation may then be placed above the ceiling to assure the space around the appli- ance is protected. Refer to Page 8, Figure 7.
6 | 7412950 |