Lennox International Inc GWB8-245E-2, GWB8-262E-2, GWB8-280E-2 Minimum Vent Pipe Clearance

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7 - CHIMNEY AND VENT PIPE CONNECTION

!WARNING

Boiler and venting installations shall be performed by a qualified expert and in accordance with the appropriate manual. Installing or venting boiler or other gas appliance with improper methods or materials may result in serious injury or death due to fire or to asphyxiation from poisonous gases such as carbon monoxide with is odorless and invisible.

5.Test for spillage at the draft hood relief opening after 5 minutes of main burner operation. Use the flame of a match or candle, or smoke from a cigarette, cigar or pipe.

6.After it has been determined that each appliance remaining connected to the common venting system properly vents when tested as outlined above, return doors, windows, exhaust fans, fireplace dampers and any other gas-burning appliance to their previous conditions of use.

!WARNING

Do not connect boiler to any portion of mechanical draft system operating under positive pressure.

Minimum Vent Pipe Clearance

Wood and other combustible materials must not be closer than 6” from any surface of single wall metal vent pipe. Listed Type B vent pipe or other listed venting systems shall be installed in accordance with their listing.

Removing Existing Boiler From Common Venting System

When an existing boiler is removed from common venting system, common venting system is likely to be too large for proper venting of appliances remaining connected to it.

At time of removal of existing boiler, following steps shall be followed with each appliance remaining connected to the common venting system placed in operation, while other appliances remaining connected to common venting system are not in operation.

1.Seal any unused openings in the common venting system.

2.Visually inspect the venting system for proper size and horizontal pitch and determine there is no blockage or restriction, leakage, corrosion and other deficiencies which could cause an unsafe condition.

3.Insofar as is practical, close all building doors and windows and all doors between the space in which the appliances remaining connected to the common venting system are located and other spaces of the building. Turn on clothes dryers and any appliance not connected to the common venting system. Turn on any exhaust fans, such as range hoods and bathroom exhausts, so they will operate at maximum speed. Do not operate a summer exhaust fan. Close fireplace dampers.

4.Place in operation the appliance being inspected. Follow the lighting instructions. Adjust thermostat so appliance will operate continuously.

7.Any improper operation of the common venting system should be corrected so the installation conforms with the National Fuel gas Code, ANSI Z223.1/NFPA 54, and/or the Natural Gas and Propane Installation Code, CAN/CSA B149.1. When re-sizing any portion of the common venting system, the common venting system should be re-sized to approach the minimum size determined using the appropriate tables in Chapter 13 of the National Fuel Gas Code, ANSI Z223.1/NFPA 54, and/or the Natural Gas and Propane Installation Code, CAN/CSA B149.1.

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Contents Product Literature GAS-FIRED HOT Water BoilersDimensions DimensionsInch Boiler Model Number Flue Diameter WidthBoiler Ratings and Capacities Ratings and CapacitiesBoilers for USE AT High Altitude Table of Contents Installation Procedure Minimum Clearances to CombustibleMinimum Room Volume, Indoor Air Only Room Cubic Feet VolumeVentilation & Combustion AIR CanadaConnecting Supply and Return Piping Relief Valve Discharge LineCheck local DischargeTemperature Pressure Gauge For USE with Cooling UnitsTypical Hot Water Piping Bypass Piping Circulator on Supply Connecting The Vent Damper And Vent Connector Chimney and Vent Pipe ConnectionCheck Your Chimney Chimney SizingMinimum Vent Pipe Clearance Removing Existing Boiler From Common Venting SystemVent Damper Installation Vent Damper Manual OperationGAS Supply Piping Gas Pipe SizesCheck GAS Supply Checking GAS PipingElectrical Wiring Vent Damper WiringElectric Power Supply Thermostat InstallationWiring Diagrams Integrated High Limit Electronic Ignition ControlWiring Diagrams Integrated High Limit Electronic Ignition Control General Instructions Filling System with WaterLighting Instructions Light this burner by handDo not use this appliance if any part has To Turn OFF GAS to ApplianceOperating Your Boiler Check Thermostat Operation Maintaining Your Boiler Service Hints If Your System is not Heating or not Giving Enough HeatPossible Cause What to do If Burner is NoisyEquipment and Optional Accessories Rollout Switch Flame Rollout Safety Shutoff Blocked Vent Safety Switch Blocked Vent Safety ShutoffInstallation Environment Considerations Adjusting SettingsAppendix a Control Module Electrical ConnectionsOperation Operation State CodesBoiler High Limit Temperature Controller TroubleshootingTroubleshooting Error Codes Error DefinitionIntermittent Pilot StepTroubleshooting Pilot Flame Correct Pilot Flame 3/8 to 1/2 inch in flame. See ,Lennox Industries Inc. Dallas, Texas
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GWB8-299E-2, GWB8-245E-2, GWB8-280E-2, Gas-Fired Hot Water Boiler, GWB8-262E-2 specifications

Lennox International Inc. is a prominent player in the HVAC industry, renowned for its innovative solutions and high-efficiency products. Among its standout offerings is the GWB8 Gas-Fired Hot Water Boiler, available in various models including GWB8-262E-2, GWB8-245E-2, GWB8-280E-2, and GWB8-299E-2. These units are designed to provide reliable and efficient heating solutions for residential applications.

One of the key features of the GWB8 series is its energy-efficient operation. These boilers are designed to achieve an AFUE (Annual Fuel Utilization Efficiency) rating of up to 84%, allowing homeowners to save on energy costs while reducing their environmental footprint. The product utilizes a cast-iron heat exchanger, which promotes optimal heat retention and distribution, ensuring consistent performance throughout the heating season.

The GWB8 series incorporates advanced technologies to enhance comfort and efficiency. A significant innovation is the use of a power venter system that facilitates venting through the sidewall of the home, providing installation flexibility while maintaining safety standards. Additionally, the boilers are equipped with a Honeywell integrated control for precise temperature management and modulating gas valve technology, which adjusts the gas flow to match the heating demand, further optimizing fuel consumption.

Another defining characteristic of the GWB8 models is their durable construction. Designed to withstand the rigors of heating applications, these models feature a robust, powder-painted steel cabinet that helps prevent rusting and corrosion. The access doors are insulated, contributing to overall efficiency while allowing easy maintenance and serviceability.

The GWB8 series is also designed with homeowner comfort in mind. The quiet operation of these boilers ensures that they blend into the living environment without disruptive noise, making them an ideal choice for residential settings. The models are compatible with various heating systems, including hydronic heating, making them versatile and reliable.

Overall, Lennox's GWB8 Gas-Fired Hot Water Boiler series is an excellent choice for homeowners seeking efficient, durable, and reliable heating solutions. With a combination of advanced technologies, energy-efficient performance, and practical features, these boilers set a high standard for residential heating systems in today's market.
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