CDVX Series Direct Vent Gas Fireplace
Do not back fill around snorkel. A clearance of at least 4” (102 mm) must be maintained between the snorkel and the soil.
If the foundation is recessed, use recess brackets (not supplied) for securing lower portion of the snorkel. Fasten brackets to wall first, then secure to snorkel with self drilling #8 x 1/2 sheet metal screws. It will be necessary to extend vent pipes out as far as protruding wall face. (Fig. 35)
| Snorkel | |
Foundation Recess | Wall Screws | |
| ||
Recess Brackets |
| |
Watertight Seal | Sheet Metal | |
Around Pipe | ||
Screws | ||
|
BG401
Fig. 35 Snorkel installation, recessed foundation.
Vertical Through-the-Roof Applications
This Gas Fireplace has been approved for:
1.Vertical installations up to 40’ (12 m) in height. Up to 10’ (3 m) horizontal vent run can be installed within the vent system using a maximum of three 90° elbows.
2.Up to two 45° elbows may be used within the horizontal run. For each 45° elbow used on the horizontal level the maximum horizontal length must be reduced by 18” (457 mm).
Maximum
Example: Maximum horizontal length
0 x 45° elbows | = | 10’ (3 m) |
1 x 45° elbows | = | 8¹⁄₂’ (2.6 m) |
2 x 45° elbows | = | 7’ (2.1 m) |
3.A minimum of an 8’ vertical rise.
4.Two sets of 45° elbows offsets within these vertical installations. From 0 to a maximum of 8’ (2.4 m) of vent pipe can be used between elbows. (Fig. 37)
5.7DVCS must be used to support offsets. (Fig. 36) This application will require that you first determine the roof pitch and use the appropriate 7DVSKV (A, B or F). (Refer to Venting Components List, Page 27)
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| Max. |
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| 8’ |
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| (2.4 m) |
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| 45° |
| Typical |
|
| 50’ | Ceiling |
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| Support | |
| Max. | (15 m) | |
|
| Application | |
| 8’ |
| |
| (2.4 m) |
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|
|
| 45° |
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|
|
| Typical Roof |
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|
| Support Ap- |
|
|
| plication |
Typical Offset Installation | FP1021 | ||
Fig. 37 | Typical vertical roof applications. |
| |
Minimum
10’ (3 m)
Vertical Through-the-Roof Installation
8’ (2.4 m) / Maximum
40’ (12 m) Vertical Rise
Pipe Straps Every 3’ (914 mm)
CFM148
Fig. 36 Support straps for horizontal runs.
1. | Locate your fireplace. |
2. | Plumb to center of the (4”) flue collar from ceiling |
| above and mark position. |
3. | Cut opening equal to 9³⁄₈” x 9³⁄₈” (240 x 240 |
| mm). 10³⁄₈” x 9³⁄₈” (264 x 240 mm) when using |
| 7TCRVT1320. |
4. | Proceed to plumb for additional openings through |
| the roof. In all cases, the opening must provide a |
| minimum of 1 inch clearance to the vent pipe, i.e., |
| the hole must be at least 9³⁄₈” x 9³⁄₈” (240 x 240 mm). |
5. | Place fireplace into position. |
6. | Place firestop(s) #7DVFS or Attic Insulation Shield |
| #7DVAIS into position and secure. (Fig. 38) |
20 | 20012253 |
