Vermont Castings EWF36A
Penetrating the Roof
Run pipe to roofline. Since chimney system must be vented to the
If a chase is used, refer to the installation manual pro- vided with the termination cap.
Locate Chimney Centerpoint on Roof
Use same procedure detailed in locating center point of the flue system.
Drive a nail up through roof at the center point. This will
determine center point on outside of the roof.
Cut and Frame Roof Hole
Size of roof hole varies with the type of chimney ter- mination installed. Refer to installation instructions provided with CFM Corporation chimney termination to find correct size of roof hole.
There must be a 2” (51 mm) air space between out- ermost portion of chimney sections and any adjacent combustible surfaces. (Combustible surfaces include burnable materials such as: ceiling members, joists, flooring, combustible insulation and roof structures.)
WARNING: Do not pack required air spaces with insulation or other materials.
Mark an outline of the roof hole around the center of the point nail. NOTE: Hole dimensions given in the chim- ney top installation instructions are horizontal dimen- sions; therefore, the hole size must be marked on the roof accordingly.
Cover the opening of the installed chimney so debris cannot get into the system.
Cut and frame the hole. It is good practice to use fram- ing lumber that is the same size as the rafters. Install the frame securely because the chimney top and flash- ing anchored to the frame must be able to withstand heavy winds.
Install Remainder of Chimney Sections
Since you have already preplanned the height of your termination according to the Ten Foot Rule, continue to install pipe to the predetermined height.
Check the chimney top installation instructions for details on how high above the roof top the chimney sec- tions (all pipes) should extend.
Install Top Housing or Termination
Follow the installation instructions provided with the chimney termination you have selected.
Installing Chimney in a Chase
Refer to Figure 2, Page 5 for an illustration of a typical chase installation.
CAUTION: Treatment of firestop spacers and construc- tion of chase may vary with type of building. These instructions are not a substitute for local building codes. You must check your local building codes to determine specific requirements for your city or state. NOTE: Other building materials may be required in addition to CFM Corporation Firestop Spacers.
Finishing
CAUTION: All joints between the finished wall and the fireplace surround (steel front) must be sealed with noncombustible material to prevent cold air leakage into the room. (Fig. 20)
NOTE: No material may cover black cast face.
Air Space Clearances
Combustible framing material MUST NOT penetrate AIR SPACE (shaded areas)
2” (51mm) 
Standoff
1” (25mm) Air Space to Sides
|
| Firestop |
| Wall |
|
| Shield | 1” (25mm) |
|
| |
|
| Space to Back |
|
| 1” (25mm) |
|
| Air Space |
|
| to Sides |
NO mate- |
|
|
rial may |
|
|
cover cast |
|
|
face |
| 0” Clearance |
|
| |
|
| to Floor |
FP1199 |
| Hearth Extension |
Fig. 20 Minimum clearances to combustibles.
14 | 20005167 |