Venting Installation Diagrams & Examples for On-Demand Water Heaters - NovaVent Line - June 2012

Oct 25, 2026

Uploaded by Đào

Venting Installation Diagrams & Examples for On-Demand Water Heaters (NovaVent Line, June 2012) provides illustrated termination options for intake and exhaust configurations, including sidewall and roof layouts, with variants for noncombustible and combustible walls as well as direct-vent and concentric direct-vent designs. Notes specify support for longer horizontal runs, condensate pitch and drain practices, intake/exhaust separation, and local code compliance. The document also includes venting instructions and warnings addressing carbon monoxide hazards, installation requirements, and referenced fuel-gas code sections.

LanguageEnglish

CategoryTechnology

FormatPDF

Pages45

Reading Time1 h 53 min

AccessFree to download

3” Intake & 4” Exhaust

Standard Sidewall Termination - Noncombustible Wall

Standard Sidewall Termination - Combustible Wall

Direct-Vent Sidewall Termination - Combustible Wall

Concentric Direct-Vent Sidewall Termination

Standard Roof Termination

Direct-Vent Roof Termination

4” Intake & 4” Exhaust

5” Intake & 5” Exhaust

Venting Instructions

Venting Installation Diagrams & Examples for On‐Demand Water Heaters: NovaVent Line JUNE 2012 324192‐000 TABLE OF CONTENTS 3” Intake & 4” Exhaust Standard Sidewall Termination – Noncombustible Wall (Example 1) 1A Standard Sidewall Termination – Noncombustible Wall (Example 2) 2A Standard Sidewall Termination – Noncombustible Wall (Example 3) 3A Standard Sidewall Termination – Combustible Wall (Example 1) 4A Standard Sidewall Termination – Combustible Wall (Example 2) 5A Standard Sidewall Termination – Combustible Wall (Example 3) 6A Direct‐Vent Sidewall Termination – Combustible Wall (Example 1) 7A Direct‐Vent Sidewall Termination – Combustible Wall (Example 2) 8A Direct‐Vent Sidewall Termination – Combustible Wall (Example 3) 9A Concentric Direct‐Vent Sidewall Termination (Example 1) 10A Concentric Direct‐Vent Sidewall Termination (Example 2) 11A Standard Roof Termination (Flat Roof) 12A Standard Roof Termination (Angled Roof) 13A Direct‐Vent Roof Termination (Flat Roof) 14A Direct‐Vent Roof Termination (Angled Roof) 15A 4” Intake & 4” Exhaust Direct‐Vent Sidewall Termination – Combustible Wall (Example 1) 7B Direct‐Vent Sidewall Termination – Combustible Wall (Example 2) 8B Direct‐Vent Sidewall Termination – Combustible Wall (Example 3) 9B Concentric Direct‐Vent Sidewall Termination (Example 1) 10B Concentric Direct‐Vent Sidewall Termination (Example 2) 11B Direct‐Vent Roof Termination (Flat Roof) 14B Direct‐Vent Roof Termination (Angled Roof) 15B 5” Intake & 5” Exhaust Standard Sidewall Termination – Noncombustible Wall (Example 1) 1C Standard Sidewall Termination – Noncombustible Wall (Example 2) 2C Standard Sidewall Termination – Noncombustible Wall (Example 3) 3C Standard Sidewall Termination – Combustible Wall (Example 1) 4C Standard Sidewall Termination – Combustible Wall (Example 2) 5C Standard Sidewall Termination – Combustible Wall (Example 3) 6C Direct‐Vent Sidewall Termination – Combustible Wall (Example 1) 7C Direct‐Vent Sidewall Termination – Combustible Wall (Example 2) 8C Direct‐Vent Sidewall Termination – Combustible Wall (Example 3) 9C Concentric Direct‐Vent Sidewall Termination (Example 1) 10C Concentric Direct-Vent Sidewall Termination (Example 2) 11C Standard Roof Termination (Flat Roof) 12C Standard Roof Termination (Angled Roof) 13C Direct-Vent Roof Termination (Flat Roof) 14C Direct-Vent Roof Termination (Angled Roof) 15C NOTES: 􀁸 For longer horizontal vent runs, please use support straps every 4 ft., and pitch the run so that any condensate formed will roll back toward the condensate trap. 􀁸 Please locate the intake and exhaust sidewall terminations on the same side wall (same pressure zone) . The intake and exhaust sidewall terminations should be at least 3 feet apart. 􀁸 Please follow all local codes when draining condensate. These illustrations are intended as basic guides only. There is a wide variety of situations that will require different parts and/or modifications to these basic designs. Designers must add all necessary safety and auxiliary equipment to conform to code requirements and design practices. Qualified Installer or Service Agency Installation and service of this water heater requires ability equivalent to that of a Qualified Agency (as defined by ANSI below) in the field involved. Installation skills such as plumbing, air supply, venting, gas supply and electrical supply are required in addition to electrical testing skills when performing service. ANSI Z223.1 2006 Sec. 3.3.83: “Qualified Agency” - “Any individual, firm, corporation or company that either in person or through a representative is engaged in and is responsible for (a) the installation, testing or replacement of gas piping or (b) the connection, installation, testing, repair or servicing of appliances and equipment; that is experienced in such work; that i

FAQs

What spacing guidance is given for intake and exhaust sidewall terminations?

Locate the intake and exhaust sidewall terminations on the same side wall (same pressure zone) and keep them at least 3 feet apart.

How should longer horizontal vent runs be supported and pitched?

Use support straps every 4 ft for longer horizontal runs, and pitch the run so condensate rolls back toward the condensate trap.

What are the key safety warnings about improper venting?

Improper venting can cause excessive carbon monoxide levels, leading to severe injury or death. Improper installation can cause nausea or asphyxiation and will void the product warranty.

Oct 25, 2026

Uploaded by Đào