A
B
7.5' | 1 x 90° elbow in horizontal plane = 3’ (914mm) | |
(2.3m) | ||
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| A + B = 17' (5.2m) Max. | |
| FP1238 |
Fig. 19 Maximum vent run with elbows.
•For each 45° elbow installed in the horizontal run, the length of the horizontal run MUST be reduced by 18” (457 mm). This does not apply if the 45° elbows are installed on the vertical part of the vent system.
•The maximum number of elbow degrees in a system is 270°. (Fig. 20)
Vertical Sidewall Installation
Twist Lock Pipe
STEP 1
Locate vent opening on the wall. It may be necessary to first position the fireplace and measure to obtain hole location. Depending on whether the wall is combustible or noncombustible, cut opening to size. (Fig. 21)
For combustible walls first frame in opening.
Example: |
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Elbow 1 | = | 90° |
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Elbow 2 | = | 45° | 4 | |
Elbow 3 | = | 45° | ||
Elbow 4 | = | 90° |
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Total angular variation | = | 270° |
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1 + 2 + 3 + 4 = 270°
RDV4136 Series Direct Vent Gas Fireplace
NOTE: When using flex vent, the opening will have to be measured according to the 1/2” (13 mm) rise in 12” (305 mm) vent run.
Combustible Walls: (Fig. 21) Cut a 9³⁄₈”H x 9³⁄₈”W (240 x 240 mm) hole through the exterior wall and frame as shown.
Noncombustible Walls: (Fig. 21) Hole opening must be 7¹⁄₂” (190 mm) in diameter.
Vent Opening for Combustible Wall
9³⁄₈”
(240mm)
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| Framing |
9³⁄₈” |
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(240mm) |
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Fireplace Hearth
Opening for Noncombustible Wall
7¹⁄₂”
(190mm)
Fig. 21 Locate vent opening on wall.
STEP 2
Measure wall thickness and cut zero clearance sleeve parts to proper length (MAXIMUM 12”/305 mm). Assem- ble sleeve and attach to firestop with #8 sheet metal screws (supplied). Install firestop assembly. (Fig. 22)
Zero clearance sleeve is only required for combustible walls.
Adjustable | Max. Length | |
12” (305mm) | ||
Zero Clearance | ||
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Sleeve |
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| #8 Screws (2) | |
#8 Screws |
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(2) |
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1
3
2
FP1239
| #8 Screws |
| (2) |
Firestop |
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Adjustable Zero Clearance Sleeve | ZCS101 |
Fig. 22 Adjustable zero clearance sleeve.
STEP 3
Place fireplace into position. (Fig. 23) Measure the verti-
Fig. 20 Maximum
number of elbow degrees.
cal height (X) required from the base of the flue collars to the center of the wall opening.
10010618 | 15 |