Lennox International Inc Gas-Fired Hot Water Boiler, GWB8-262E-2, GWB8-280E-2 Table of Contents

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3 - TABLE OF CONTENTS

1

- Dimensions

2

2

- Ratings And Capacities

3

3

- Table of Contents

4

4

- Installation Procedure

5

5

- Ventilation & Combustion Air

6

6

- Connecting Supply And Return Piping

7

7

- Chimney And Vent Pipe Connection

11

8

- Vent Damper Operation

14

9

- Gas Supply Piping

15

10

- Electrical Wiring

15

11

- Wiring Diagrams

16

12

- General Instructions

19

13

- Lighting Instructions

20

14

- Operating Your Boiler

21

15

- Maintaining Your Boiler

23

16

- Service Hints

24

17

- Equipment And Optional Accessories

25

Appendix A - Control Module

27

SAFETY SYMBOLS & WARNINGS

The following defined symbols are used throughout this manual to notify the reader of potential hazards of varying risk levels.

!DANGER

Indicates a hazardous situation which, if not avoided, WILL result in death or serious injury

!WARNING

Indicates a hazardous situation which, if not avoided, could result in death or serious injury.

!CAUTION

Indicates a hazardous situation which, if not avoided, could result in minor or moderate injury.

NOTICE

Used to address practices not related to personal injury.

KEEP THIS MANUAL NEAR BOILER

RETAIN FOR FUTURE REFERENCE

IMPORTANT: Read the following instructions COMPLETELY before installing!!

!WARNING

Fire, explosion, asphyxiation and electrical shock hazard. Improper installation could result in death or serious injury. Read this manual and understand all requirements before beginning installation.

!WARNING

Keep boiler area clear and free from combustible materials, gasoline and other flammable vapors and liquids.

DO NOT obstruct air openings to the boiler room.

Modification, substitution or elimination of factory equipped, supplied or specified components may result in personal injury or loss of life.

TO THE OWNER - Installation and service of this boiler must be performed by a qualified installer.

TO THE INSTALLER - Leave all instructions with boiler for future reference.

When this product is installed in the Commonwealth of Massachusetts the installation must be performed by a Licensed Plumber or Licensed Gas Fitter.

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Contents Product Literature GAS-FIRED HOT Water BoilersDimensions DimensionsInch Boiler Model Number Flue Diameter WidthRatings and Capacities Boiler 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 CodesTroubleshooting Boiler High Limit Temperature ControllerTroubleshooting 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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