TABLE C
H Maximum | V Minimum | ||
|
|
|
|
feet | (meters) | feet | (meters) |
5 | (1.524) | 1 | (0.305) |
10 | (3.048) | 2 | (0.610) |
15 | (4.572) | 3 | (0.914) |
20 | (6.096) | 4 | (1.219) |
V + H = 40 feet (12.2 m) Max.
H = 20 ft. (6.096 m) Max.
Example: If 20 feet of (H) horizontal vent run is needed, then 4 feet minimum of (V) vertical vent will be required.
This table shows a 1 (V) to 5
(H)ratio. For every 1 foot of
(V)vertical, you are allowed 5 feet of (H) horizontal run, up to a maximum horizontal run of 20 feet.
*Use Firestop/Spacer SV4.5HF or SF4.5HF when using Secure Vent or Secure Flex respectively. Use Firestop/Spacer SV4.5HF5 or SF4.5HF5 when using Secure Vent or Secure Flex on horizontal vent runs for the MPLDV35/40/45 with a center line lower than 48” (1219 mm) above the fireplace top wrapper surface. In all cases the firestop/spacer provided with the termination may be used with the termination, frame to 5” clearance where applicable.
H
H
V
*Wall
Support Bracket
**Wall
Firestop/Spacer
*When using Secure Flex, use | *Ceiling |
|
Firestop/Spacer |
| |
Firestop/Spacer SF4.5VF | (SV4.5VF) |
|
**Use Firestop/Spacer SV4.5HF or SF4.5HF when using |
| |
Secure Vent or Secure Flex respectively. Use |
| |
Firestop/Spacer SV4.5HF5 or SF4.5HF5 when using |
| |
Secure Vent or Secure Flex on horizontal vent runs for | Support | |
the MPLDV35/40/45 with a center line lower than 48” | Bracket | |
(1219 mm) above the fireplace top wrapper surface. |
| |
In all cases the firestop/spacer provided with the |
| |
termination may be used with the termination, frame |
| |
to 5” clearance where applicable. |
| |
Square termination (SV4.5HT-2) shown.
See Table 3 as an aid in venting component selection for a particular range of exterior wall thicknesses.
Figure 30 - Top Vent - ONE 90 DEGREE ELBOW - ELBOW
CONNECTION NOT DIRECTLY AT APPLIANCE
Firestop/Spacer
H = 28 inches (711 mm) Maximum
Square termination
Figure 31 - Top Vent - ONE 90 DEGREE ELBOW -
CONNECTION DIRECTLY AT APPLIANCE
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
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