VENTING INSTALLATION

Continued

 

 

Listed

 

 

 

 

 

 

Vent Cap

 

 

Listed

Listed

 

 

 

 

 

Vent Cap

 

 

 

 

 

Vent Cap

 

 

 

 

 

 

 

Maintain

 

Maintain

 

 

 

 

 

Listed

 

 

Maintain

 

Listed

 

 

 

 

 

Clearance

 

Maintain

Listed

 

Clearance

 

 

 

 

Support Each

 

Listed

Clearance

 

 

 

 

 

 

 

Lateral At

 

Clearance

 

 

 

 

Least Every

45

 

 

 

 

60

Six (6) Feet

12' Min.

 

 

 

 

 

 

 

 

 

 

 

 

 

8'

6'

 

 

45

10'

12' Min.

Position

 

45

Position

12' Min.

 

Position

 

Firestop

 

Firestop

 

Firestop

 

 

 

Maintain

 

Maintain

 

Maintain

 

 

Listed

 

Listed

 

Listed

 

 

Clearance

 

Clearance

 

Clearance

EXAMPLE 1

EXAMPLE 2

EXAMPLE 3

Figure 10 - Typical B-Vent Configuration

The flue connection must be made using listed B-type connectors and the existing system must be code inspected for damage and proper installation.

It is not recommended that this appliance be com- mon vented with an existing gas burning appliance. However, if it becomes necessary to common vent this appliance, the venting system must be sized and configured in accordance with the common venting guides Appendix G of the current National Fuel Gas Code ANSI Z223.1/NFPA 54 and in

Lowest Listed

Discharge Vent Cap

Opening

8 Ft. Min.

Listed Gas

Vent

12

H(Min) Height From Roof

x

Roof Pitch x/12 Listed Clearance

Canada with CAN/CGA B149.

Note: Before connecting this appliance to an existing vent system or a common venting sys- tem consult with your local architect, planner or building official.

WARNING: This appliance must be properly connected to a system and must not be connected to a chimney flue servicing a separate solid fuel burning appliance.

 

H (Min.)

 

Roof Pitch

Ft.

m

 

 

 

Flat to 6/12

1.0

0.30

 

 

 

6/12 to 7/12

1.25

0.38

 

 

 

Over 7/12 to 8/12

1.5

0.46

 

 

 

Over 8/12 to 9/12

2.0

0.61

 

 

 

Over 9/12 to 10/12

2.5

0.76

 

 

 

Over 10/12 to 11/12

3.25

0.99

 

 

 

Over 11/12 to 12/12

4.0

1.22

 

 

 

Over 12/12 to 14/12

5.0

1.52

 

 

 

Over 14/12 to 16/12

6.0

1.83

 

 

 

Over 16/12 to 18/12

7.0

2.13

 

 

 

Over 18/12 to 20/12

7.5

2.27

 

 

 

Over 20/12 to 21/12

8.0

2.44

Figure 11 - B-Vent Terminations

10

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108796-01K

Page 10
Image 10
Desa H) AND VM42EP(B, VM36EP installation manual Typical B-Vent Configuration, Roof Pitch