TOA Electronics SSDV-3328 Vertical Vent FIGURES/TABLES, 610 305 219 829 914 438

VERTICAL VENT FIGURES/TABLES

Note: Secure Vent (rigid vent pipe) is shown in the Figures; Secure Flex (flexible vent pipe) may also be used.

WARNING

Under no circumstances, may sepa- rate sections of concentric flexible vent pipe be joined together.

Notes:

•It is very important that the horizontal/in- clined run be maintained in a straight (no dips) and recommended to be in a slightly elevated plane, in a direction away from the fireplace of 1/4" rise per foot (20 mm per meter) which is ideal, though rise per foot run ratios that are smaller are acceptable all the way down to at or near level.

•SV4.5VF (Secure Vent), SF4.5VF (Secure Flex) firestop/spacer must be used anytime vent pipe passes through a combustible floor or ceiling. SV4.5HF (Secure Vent), SF4.5HF (Secure Flex)firestop/spacer must be used anytime vent pipe passes through a combustible wall.

•Two 45 degree elbows may be used in place of one 90 degree elbow. The same rise to run ratios, as shown in the venting Figures for 90 elbows, must be followed if 45 degree elbows are used.

•AN ELBOW IS ACCEPTABLE AS 1 FOOT OF VERTICAL RISE EXCEPT WHERE AN ELBOW IS THE ONLY VERTICAL COMPONENT IN THE SYSTEM (See Figure 35).

uCeiling Firestop /	40 feet
	(12.2 meters)
Spacer (SV4.5VF)
	Maximum

uWhen using Secure Flex, use Firestop / Spacer

SF4.5VF

A Vent Restrictor, as shown in Figure 18 Page 13, must be used in this application

Figure 26 - Top Vent - STRAIGHT

Table A

H Maximum		V Minimum
feet	(meter)	feet	(meter)
2	(0.610)	1	(0.305)
4	(1.219)	2	(0.610)
6	(1.829)	3	(0.914)
8	(2.438)	4	(1.219)

V + H = 40 feet (12.2 meters) Max.

H = 8 feet (2.4 meters) Max.

Ratio V to H ratio is 1:2

Example: If 8 feet of (H) horizontal vent run is needed, then 4 feet minimum (V) vertical vent will be required.

This table shows a 1(V) to 2(H) ratio. For every 1 foot of (V) vertical, you are allowed 2 feet of (H) horizontal run, up to a maximum horizontal run of 8 feet.

uWhen using Secure Flex, use Firestop /

Spacer SF4.5VF.

uCeiling Firestop /

Spacer (SV4.5VF)

V

H

Figure 27 - Rear Vent - ONE 90 DEGREE ELBOW

H

uCeiling Firestop /

Spacer (SV4.5VF)

V1

Table B

H Maximum		V Minimum
feet	(meter)	feet	(meter)
5	(1.524)	Elbow Only
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 + V1 + H = 40 feet (12.2 m) Max.

H = 20 feet (6.096 meters) Max.

V

Example: If 20 feet of (H) horizontal vent run is needed, then 4 feet minimum of (V) vertical vent will be required.

vWall Firestop/

Spacer (SV4.5HF)

uWhen using Secure Flex, use Firestop /

Spacer SF4.5VF.

vWhen using Secure Flex, use Firestop /

Spacer SF4.5HF.

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.

An elbow is acceptable as 1 foot of vertical rise except where an elbow is the only vertical component in the system. See Figure 35.

Figure 28 - Top Vent - TWO 90 DEGREE ELBOWS

NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.

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