What is UL 1738 vent pipe?

– UL 1738 is a standard for Venting Systems for Gas-Burning Appliances, Categories II, III, and IV. – It covers both metallic and non-metallic materials and includes over 50 material and system performance tests.

Is B vent UL 1738?

UL 1738, Venting Systems for Gas-Burning Appliances, Categories II, III, and IV, and ULC-S636, Standard for Type BH Gas Venting Systems, cover vents in the USA and Canada for a subset of gas-fired products where flue gas temperatures are typically reduced.

What is ULC S636?

ULC-S636. July 1, 2008. STANDARD FOR TYPE BH GAS VENTING SYSTEMS. These requirements cover the design, construction, and performance of gas venting systems intended for negative or positive pressure venting of gas-fired appliances producing flue gases having…

What is Category 3 vent pipe?

Category III refers to positive vent pressure which is created by exhaust blowers in unit heaters. These vent systems must be constructed of AL29-4C® stainless steel, contain gaskets for sealing, and have a built in mechanical locking band among other requirements. UL1738 approved forcategory II, III and IV appliances.

What is Type L vent?

Type L vents are designed for venting approved oil-fired and natural-gas appliances that produce draft hood flue gasses that do not exceed a temperature of 570º F (299º C), or 926º F (299º C) for 10 minutes in an over-fire situation. The minimum clearance from combustible materials is generally 3 inches.

Can ABS be used for furnace exhaust?

Suitable materials for the vent and condensate pipes include PVC (polyvinyl chloride), CPVC (chlorinated polyvinyl chloride), and ABS (acrylonitrile-butadiene-styrene) plastic pipe, depending on the furnace’s specified exhaust gas temperature.

What is Category 4 vent pipe?

Category IV Appliances are mainly high efficiency water heaters and furnaces that use plastic vent pipes. These appliances also operate with positive vent pressure and cannot share a common vent with a gravity-vented water heater.

Can you use PVC for furnace exhaust?

What is a Category 1 Vent?

Category I “An appliance that operates with a non-positive vent static pressure and with a vent gas temperature that minimizes condensate production in the vent.

What is Type C vent?

Only type C vents are used. galvanized pipes are single walled galvanized pipes. Venting gas or oil is what they are used for. Toxic fumes can be caused by using a C vent with solid fuel appliances.

What is Type B vent used for?

Type B vents are vents suitable only for listed, draft-hood equipped, gas-fired appliances, including most domestic heating and hot water systems. any appliance that produces flue gasses that exceed 480° F (249° C).

Why do high efficiency furnaces use PVC?

To combat this issue, high efficiency condensing furnace uses PVC pipes to extract the acidic water from your home. These are connected to the furnace and routed out to the side of your home. The venting system is installed at the same time as your high-efficiency furnace.

What is ul 1738 and why is it important?

– UL 1738 allows for: • The appliance manufacturer’s to continue dictating their preferred venting material. • Certified venting materials to replace plumbing products which are not intended for the application or warrantied by their manufacturer’s.

What are the ANSI/UL 1738 requirements for plastic pipe venting materials?

Plastic pipe venting materials listed and labeled in accordance with ANSI/UL 1738, Venting Systems for Gas-Burning Appliances, Categories II, III, and IV, shall be installed in accordance with the vent manufacturer’s installation instructions. Where primer is required it shall be of contrasting color. Model Code and Standards -Update

What is the UL code for a gas venting system?

Reinvented, UL 1738 Fuel Gas Venting Systems UL 1738 Flue Gas Venting Systems Gaetano Altomare Product Manager -Plumbing Venting. ReInvented. IPEX Group Agenda 1. What is Flue Gas? 2. Venting History 3. Model Codes and Standards 4. UL 1738 5. System 1738 6. Design Considerations 7. Installation Requirements

What is a 1738 PVC system?

Summary – System 1738 is the first Engineered PVC System that is certified to UL 1738 for Flue Gas Venting Applications – IPEX offers a comprehensive installation guide and training to inspectors, engineers, distributors and contractors to provide users with the highest chance of success.