18
The sum of all “R values” is: .70 + .10 +. 038 + .10 = .938
This would NOT be an acceptable combination of material for the hearth extension since the total calculated “R value” of the materials used is under the required “R value” of 1.19. An additional layer of insulating materials must be used.
Note: Also see NFI Certification Manuals for expanded explanation on calculating “R val- ues” when multiple materials are used.
WARNING: THE CRACK BETWEEN THE FIREPLACE AND THE HEARTH EXTEN- SION MUST BE SEALED WITH A NON- COMBUSTIBLE MATERIAL.
WARNING: WHEN INSTALLING HEARTH EXTENSION IN FRONT, THE FIREPLACE MUST BE RAISED IF HEIGHT OF HEARTH EXTENSION EXCEEDS 5 ³⁄₄" (197MM)
ABOVE THE BOTTOM OF FIREPLACE (FIGURE 43 ).
Cleanout Panel
Do Not Block
5³⁄₄"
(147mm)
Max. Thickness of Hearth Extension when Oasis Models are on the Floor
Figure 43
Secure the hearth extension to the floor to prevent possible shifting.
FINISH TO YOUR TASTE
There are a wide variety of “finished looks” for these fireplaces, from formal wall decor with elaborate mantels to rustic wood paneling or warm brick facings.
Only noncombustible materials like stone, tile, brick, etc., may overlap the front facing. Do not extend these materials beyond the facing and into the firebox area. Be sure not to interfere with the installation and operation of glass doors. Seal all joints between the facing and wall surrounds to prevent air intrusion. Use noncombustible caulking material only to seal the metal facing to the surround material on the finished wall.
Combustible materials may project beyond the sides of the fireplace opening as long as they are kept within the shaded areas illus- trated in Figure 44.
Combustible Materials
Allowed in Shaded
Area
18" | 1" |
|
(457mm) | (25mm) | |
| 45˚ |
|
| 18" (457mm) |
|
| Minimum Distance |
|
| to Protected Side Wall |
|
Figure 44 |
|
|
| Fireplace Information |
|
Model | Catalog Number | Weight |
| H0303 | 270 lbs. |
| H0304 | 270 lbs. |
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
INSTALLATION COMPONENTS
The following items are available for use in the installation of this appliance.
(Air Inlet supplied with fireplace. Shown here for replacement purposes only)
Air Inlet Kit (with duct) |
Firestop Spacer (30° ) | 63L37 | |
|
|
|
Locking Band | 63L60 | FLB |
Storm Collar | 63L59 | FSC |
