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PRODUCT LITERATURE
Lennox Industries Inc.
Dallas, Texas
This boiler cannot be used with all types of
chimneys. Read these instructions carefully
before installing.
C.S.A. Certifi ed for
Natural gas or Propane
Tested for 50 psi. ASME
Working Pressure
INSTALLATION
INSTRUCTIONS
GWB8-262E-2
GWB8-245E-2
GWB8-299E-2
GWB8-280E-2
GAS FIRED BOILER
RETAIN THESE INSTRUCTIONS FOR
FUTURE REFERENCE
These instructions must be affi xed on
or adjacent to the boiler.
WARNING
!
Improper installation, adjustment,
alteration, service, or maintenance
can cause injury or property damage.
Refer to this manual. For assistance
or additional information consult a
qualifi ed installer, service agency, or
the gas supplier.
GAS-FIRED HOT WATER BOILERS
These Gas-Fired Water boilers are low pressure,
sectional cast iron boilers Design Certifi ed by
CSA (Canadian Standards Association) for
use with Natural and Propane Gases. They
are constructed and hydrostatically tested for
maximum working pressure of 50 psi (pounds
per square inch) in accordance with A.S.M.E.
(American Society of Mechanical Engineers)
Boiler and Pressure Vessel Code Section IV
Standards for Cast Iron Heating Boilers.
P/N# 240009276, Rev. A [03/2012]
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Related Manuals for Lennox GWB8-262E-2
Summary of Contents for Lennox GWB8-262E-2
- Page 1 INSTALLATION INSTRUCTIONS PRODUCT LITERATURE Lennox Industries Inc. Dallas, Texas GWB8-262E-2 GWB8-245E-2 GWB8-299E-2 GWB8-280E-2 GAS FIRED BOILER RETAIN THESE INSTRUCTIONS FOR FUTURE REFERENCE These instructions must be affi xed on or adjacent to the boiler. WARNING Improper installation, adjustment, alteration, service, or maintenance can cause injury or property damage.
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Page 2: Dimensions
1 - DIMENSIONS Figure 1 - Dimensions Table 1 - Dimensions DIMENSIONS (INCH.) BOILER MODEL NUMBER FLUE “A” DIAMETER WIDTH 27½ GWB8-245E-2/GWB8-262E-2 30¾ GWB8-280E-2/GWB8-299E-2 Add 5½” to height for vent Damper. -
Page 3: Ratings And Capacities
RATING CAPACITY IGNITION Capacity INPUT RATING INPUT Water, WITH VENT Water, DAMPER GWB8-262E-2 262.5 83.9 GWB8-299E-2 83.7 GWB8-245E-2 83.9 GWB8-280E-2 83.7 Input rating for sea level to 2,000 ft. (610m) above sea level. † • United States, over 2000 ft (610m) above sea level. Reduce input rate 4% for every 1000 ft (304m) above sea level. -
Page 4: Table Of Contents
3 - TABLE OF CONTENTS 1 - Dimensions ............ 2 KEEP THIS MANUAL NEAR BOILER RETAIN FOR FUTURE REFERENCE 2 - Ratings And Capacities ........3 3 - Table of Contents ..........4 4 - Installation Procedure ........5 IMPORTANT: Read the following instructions COMPLETELY before installing!! 5 - Ventilation &... -
Page 5: Installation Procedure
4 - INSTALLATION PROCEDURE WARNING WARNING Improper installation, adjustment, alteration, service Fire hazard. Do not install boiler on combustible or maintenance could result in death or serious fl ooring or carpeting. Failure to follow these injury instructions could result in death or serious injury. FOR INSTALLATION ON NON-COMBUSTIBLE Installation must conform to the requirements of the FLOORS ONLY - For installation on combustible... -
Page 6: Ventilation & Combustion Air
5 - VENTILATION & COMBUSTION AIR Provide combustion air and ventilation air in accordance • All Outdoor Air. Provide permanent opening(s) with the section “Air for Combustion and Ventilation,” of the communicating directly or by ducts with outdoors. National Fuel Gas Code, ANSI Z223.1/NFPA 54, or Sections A. -
Page 7: Connecting Supply And Return Piping
6 - CONNECTING SUPPLY AND RETURN PIPING WARNING Burn or Scald Hazard. Discharge line shall be installed to relief valve outlet connection to avoid burns, scalding, or water damage due to discharge of steam and/or hot water during operation. Discharge line shall: •... - Page 8 6 - CONNECTING SUPPLY AND RETURN PIPING Verify clean water supply is available to water inlet WARNING valve. Install sand strainer when water supply is from Burn and scald hazard. Safety relief valve could a well or pump. discharge steam or hot water during operation. In- Install hot water boiler above radiation level or as stall discharge piping per these instructions.
- Page 9 6 - CONNECTING SUPPLY AND RETURN PIPING Figure 4 - Typical Hot Water Piping Figure 5 - Chilled Water Piping...
- Page 10 6 - CONNECTING SUPPLY AND RETURN PIPING Bypass Piping Required For High Mass (Large Water Content) Systems Figure 6 - BYPASS PIPING - CIRCULATOR ON SUPPLY Figure 7 - BYPASS PIPING - CIRCULATOR ON RETURN...
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Page 11: Chimney And Vent Pipe Connection
7 - CHIMNEY AND VENT PIPE CONNECTION Connecting The Vent Damper And Vent WARNING Connector Boiler and venting installations shall be performed Refer to Figure 1, page 2 for size and location of vent (fl ue opening). by a qualifi ed expert and in accordance with the appropriate manual. -
Page 12: Venting System
7 - CHIMNEY AND VENT PIPE CONNECTION Test for spillage at the draft hood relief opening after WARNING 5 minutes of main burner operation. Use the fl ame of Boiler and venting installations shall be performed a match or candle, or smoke from a cigarette, cigar or by a qualifi... -
Page 13: Vent Damper Operation
8 - VENT DAMPER OPERATION Figure 8 - Vent Damper Installation Figure 9 - Vent Damper Placement Annually check vent damper and all fl ue product For further information, and vent damper carrying areas of appliance, with particular attention troubleshooting guide, refer to manual packaged with given to deterioration from corrosion or other vent damper. -
Page 14: Gas Supply Piping
9 - GAS SUPPLY PIPING • Pressure test over 1/2 psig (3.5 kPa). Disconnect CAUTION boiler and its individual gas shutoff valve from gas WHAT TO DO IF YOU SMELL GAS supply system. • Do not try to light any appliance. •... -
Page 15: Electrical Wiring
10 - ELECTRICAL WIRING VENT DAMPER WIRING WARNING Boiler is equipped with factory wired harness with 4 pin Electrical shock hazard. Turn OFF electrical power molex plug, that plugs into 4 pin molex receptacle inside supply at service panel before making electrical vent damper operator. -
Page 16: Wiring Diagrams
11 - WIRING DIAGRAMS Figure 12 - Integrated High Limit Electronic Ignition Control (240008781) WARNING Modifi cation, substitution or elimination of factory equipped, supplied or specifi ed components may result in personal injury or loss of life. Inducer is not an option. - Page 17 11 - WIRING DIAGRAMS Figure 13 - Integrated High Limit Electronic Ignition Control (240008781)
- Page 18 11 - WIRING DIAGRAMS Figure 14 - Integrated High Limit Electronic Ignition Control (240008781)
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Page 19: General Instructions
12 -GENERAL INSTRUCTIONS FILLING SYSTEM WITH WATER NOTICE • Close air vents on all radiation units. Open valves to Never run water in a hot empty boiler. these units. • Verify boiler and expansion tank drain valves are closed. • Air bleed screw on tank drain fi tting should be closed. •... -
Page 20: Lighting Instructions
13 - LIGHTING INSTRUCTIONS 5. Remove lower front panel. WARNING 6. Rotate the gas control knob clockwise If you do not follow these instructions “OFF”. exactly, a fi re or explosion may result Figure 15 - Automatic Gas Valve causing property damage, personal injury or loss of life. -
Page 21: Operating Your Boiler
14 - OPERATING YOUR BOILER AUTOMATIC GAS VALVE Figure 16 - Pilot Flame Automatic Gas Valve opens or closes according to heat requirements of thermostat and temperature limit control. It closes if pilot goes out. Each individual control must be operating correctly before any gas can pass to burners. - Page 22 14 - OPERATING YOUR BOILER CHECK THERMOSTAT OPERATION A. When set above temperature indicated on thermostat, boiler should ignite. B. Verify thermostat turns boiler off when room temperature reaches selected setting and starts boiler operating when room temperature falls a few degrees.
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Page 23: Maintaining Your Boiler
15 - MAINTAINING YOUR BOILER BURNERS CLEANING YOUR BOILER AND BURNERS Beginning of heating season visually check pilot and main Flue passages between sections should be examined yearly burner fl ames. See Figure 16. and cleaned if necessary. To clean: SAFETY RELIEF VALVE •... -
Page 24: Service Hints
16 - SERVICE HINTS EQUIPMENT AND OPTIONAL ACCESSORIES - WHAT THEY DO CAUTION WHAT TO DO IF YOU SMELL GAS • Do not try to light any appliance. • Do not touch any electrical switch; do not use any phone in your building. •... -
Page 25: Equipment And Optional Accessories
17 - EQUIPMENT AND OPTIONAL ACCESSORIES EXPANSION TANK AUTOMATIC FILL VALVE Expanding water fl ows into expansion tank. Tank should For a safe, effi cient operation, hot water system must be be correct size. Tank is fi lled with air. As water expands it completely fi... - Page 26 17 - EQUIPMENT AND OPTIONAL ACCESSORIES ROLLOUT SWITCH BLOCKED VENT SAFETY SWITCH (FLAME ROLLOUT SAFETY SHUTOFF) (BLOCKED VENT SAFETY SHUTOFF) Rollout switch is temperature-sensitive fuse link device. Blocked vent safety switch is manual reset disc thermostat Located on boiler base just outside fi re box. In event of with fi...
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Page 27: Appendix A - Control Module
APPENDIX A - CONTROL MODULE A.1 Installation Environment Considerations A.3 Adjusting Settings To discourage unauthorized changing of settings, procedure WARNING to enter adjustment mode is required. If you do not follow these instructions To enter adjustment mode, press UP, DOWN, and I buttons exactly, a fi... - Page 28 APPENDIX A - CONTROL MODULE A.5 Operation module proceeds to start burner (see state codes list) and heats water in boiler until setpoint temperature is Module continuously monitors boiler water temperature and achieved or thermostat is satisfi ed. . fi res or shuts off burner based on this temperature data. Burner is de-activated, ignition module completes heat- When “Call for Heat”...
- Page 29 APPENDIX A - CONTROL MODULE A.6 Boiler High Limit Temperature Controller A.7 Troubleshooting • When water temperature reaches setpoint, controller • Following service procedures are provided as general ends heating cycle. guide. • When water temperature drops below setpoint minus •...
- Page 30 APPENDIX A - CONTROL MODULE Table 7 - Troubleshooting Error Codes Error Code Defi nition Consequence Number Flame current too low. Check for fl ame. Non critical alarm Flame sensed out of normal sequence (before opening or after closing gas valve). Soft lockout Gas valve relays welded.
- Page 31 APPENDIX A - CONTROL MODULE — If fl ame rod or bracket is bent out of position, restore • Recheck ignition sequence as follows. to correct position. — Reconnect main valve wire. STEP 3: Check spark ignition circuit. — Adjust thermostat above room temperature. Disconnect ignition cable at SPARK terminal on module.
- Page 32 PRODUCT LITERATURE Lennox Industries Inc. Dallas, Texas 2201 Dwyer Avenue, Utica NY 13501 web site: www.ecrinternational.com...