Lennox International Inc Gas-Fired Hot Water Boiler, GWB8-262E-2, GWB8-280E-2 General Instructions

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12 -GENERAL INSTRUCTIONS

FILLING SYSTEM WITH WATER

•Close air vents on all radiation units. Open valves to these units.

•Verify boiler and expansion tank drain valves are closed.

•Air bleed screw on tank drain fitting should be closed.

•Open valve in line from boiler to expansion tank. Open water inlet to your boiler and leave it open. Start with lowest radiation unit. Open air vent on this unit. When all air has escaped and water starts to flow from vent, close it.

•Go to next radiation unit, and repeat this process. Repeat until you have covered every radiation units in the system (ending up at highest unit in system).

•If your units have automatic vents, manual venting is unnecessary but it will speed up the proper filling of your system.

•If your system is closed expansion tank system, you may leave it open to refill system automatically as needed.

•Check temperature pressure gauge. Not position of hand indicating pressure. This should be between 10 and 15 psi. Any lowering of this movable hand below 10 psi. Will indicate loss of water due to leakage. Automatic fill valve should compensate for this. Instructions are packaged with the valve.

NOTICE

Never run water in a hot empty boiler.

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Contents GAS-FIRED HOT Water Boilers Product LiteratureBoiler Model Number Flue Diameter Width DimensionsDimensions InchRatings and Capacities Boiler Ratings and CapacitiesBoilers for USE AT High Altitude Table of Contents Minimum Clearances to Combustible Installation ProcedureCanada Minimum Room Volume, Indoor Air OnlyRoom Cubic Feet Volume Ventilation & Combustion AIRDischarge Connecting Supply and Return PipingRelief Valve Discharge Line Check localFor USE with Cooling Units Temperature Pressure GaugeTypical Hot Water Piping Bypass Piping Circulator on Supply Chimney Sizing Connecting The Vent Damper And Vent ConnectorChimney and Vent Pipe Connection Check Your ChimneyRemoving Existing Boiler From Common Venting System Minimum Vent Pipe ClearanceVent Damper Manual Operation Vent Damper InstallationChecking GAS Piping GAS Supply PipingGas Pipe Sizes Check GAS SupplyThermostat Installation Electrical WiringVent Damper Wiring Electric Power SupplyIntegrated High Limit Electronic Ignition Control Wiring DiagramsWiring Diagrams Integrated High Limit Electronic Ignition Control Filling System with Water General InstructionsTo Turn OFF GAS to Appliance Lighting InstructionsLight this burner by hand Do not use this appliance if any part hasOperating Your Boiler Check Thermostat Operation Maintaining Your Boiler If Burner is Noisy Service HintsIf Your System is not Heating or not Giving Enough Heat Possible Cause What to doEquipment and Optional Accessories Blocked Vent Safety Switch Blocked Vent Safety Shutoff Rollout Switch Flame Rollout Safety ShutoffElectrical Connections Installation Environment ConsiderationsAdjusting Settings Appendix a Control ModuleOperation State Codes OperationTroubleshooting Boiler High Limit Temperature ControllerTroubleshooting Error Codes Step ErrorDefinition Intermittent PilotCorrect Pilot Flame 3/8 to 1/2 inch in flame. See , Troubleshooting Pilot FlameLennox 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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