DVHVAC36
How to Use the Vent Graph
1.Determine the height of the center of the horizontal vent pipe exiting through the outer wall. Using this dimension on the Sidewall Vent Graph (Fig. 12), locate the point it intersects with the slanted graph line.
2.From the point of this intersection, draw a vertical line to the bottom of the graph.
3.Select the indicated dimension, and position the fire- place in accordance with same. (Refer to examples Fig. 12)
EXAMPLE A:
If the vertical dimension from the floor of the unit is 11' (3.4m) the horizontal run to the face of the outer wall must not exceed 14' (4.3 m).
EXAMPLE B:
If the vertical dimension from the floor of the unit is 7' (2m), the horizontal run to the face of the outer wall must not exceed 8¹⁄₂' (2.6 m).
Sidewall Venting Graph
(Dimensions in Feet)
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| dimension from the floor of the unit | |
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| 3 | 4 | 5 6 | 7 8 | 9 10 11 12 13 14 15 16 17 18 19 20 |
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Horizontal dimension from the outside face of the wall | ||||||
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| to the center of the fireplace vent flange |
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Fig. 12 | Sidewall venting graph. (Dimensions in feet) |
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Corner Installation
When the DVHVAC36 unit is installed in a corner, Figure 1, Option B, the vent configuration must fol- low the Vertical Sidewall Installation Instructions.
Rear Wall Venting Applications
This appliance may be vented directly to a termination located on the rear wall behind the appliance.
NOTE: It is not necessary to seal the vent pipe joints for any rear vent applications.
•Only CFM Corporation venting components are approved to be used in these applications. Refer to “Venting Components” listed for different installation requirements.
•The maximum horizontal distance between the rear of the appliance and the outside face of the rear wall is 20” (508 mm). (Fig. 13)
•Minimum clearances between vent pipe and com- bustible materials are as follows:
Top - 2” (51 mm)
Sides - 1” (25 mm)
Bottom - 1” (25 mm)
20"
(508mm)
FP1403
Fig. 13 Rear vent application.
Rear Wall Installations
STEP 1
Locate vent opening on wall. To locate hole center, refer to appropriate fireplace dimensions on Page 4.
Combustible Walls (Fig. 14): Cut a 10³⁄₈" x 9³⁄₈" (265 x 240 mm) hole through the exterior wall and frame as shown.
Noncombustible Walls (Fig. 14): Hole opening must be 7¹⁄₂" (191 mm) in diameter.
STEP 2
Measure wall thickness and cut adjustable zero clear- ance sleeve parts to proper length (MAXIMUM 12" / 305 mm). Adjust sleeve to maximum (10³⁄₈" x 9³⁄₈" / 265 x 240 mm) and attach to firestop with #8 sheet metal screws (supplied). (Fig. 15) Install firestop assembly.
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