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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.
Refer to this manual. For assistance
or additional information consult a
qualifi ed installer, service agency, or
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1 - DIMENSIONS Figure 1 - Dimensions Table 1 - Dimensions DIMENSIONS (INCH.) BOILER MODEL NUMBER FLUE “A” DIAMETER WIDTH GWB8-245E-2/GWB8-262E-2 727½ GWB8-280E-2/GWB8-299E-2 7 30¾ Add 5½” to height for vent Damper. 2
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2 - BOILER RATINGS AND CAPACITIES Table 2 - Ratings and Capacities † NATURAL GAS † PROPANE GAS AFUE (2) (2) HIGH NET HIGH BOILER MODEL NET AHRI HEATING INTERMITTENT Input Heating ALTITUDE INPUT AHRI ALTITUDE (1) NUMBER RATING CAPACITY IGNITION (3) Capacity INPUT (3) RATING INPUT Mbh Mbh (3) Water, WITH VENT Mbh (3) (3) (3) Water, Mbh Mbh Mbh (3) DAMPER Mbh (3) Mbh GWB8-262E-2 262.5 220 191 83.9 236 GWB8-299E-2 299 251 218 269 83.7 GWB8-245E-2 245 206 179 220 83.
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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 & Combustion Air ............................6 6 - Connecting
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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. 1. FOR INSTALLATION ON NON-COMBUSTIBLE 1. Installation must conform to the requirements of the FLOORS ONLY - For installation on combustible authority having jurisdiction or, in the
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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. Two Permanent Opening Method. Provide opening 8.2, 8.3 or 8.4 of Natural Gas and Propane Installation commencing within 12 inches of top and second Code, CAN/CSA B149.1, or applicable
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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: • connect to relief valve outlet and piped down to safe point of disposal. Check local codes for maximum distance from fl oor or allowable safe point of discharge; • be of pipe size equal to or greater than that of the relief valve
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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. required by Authority having jurisdiction install low water cutoff device at time of installation. Periodic 1.
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6 - CONNECTING SUPPLY AND RETURN PIPING Figure 4 - Typical Hot Water Piping Figure 5 - Chilled Water Piping 9
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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 10
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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. Installing or venting boiler or other gas appliance with improper methods or NOTICE materials may result in serious injury or death due Damper blade on furnished vent damper has 1/2 to fi re or to asp
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7 - CHIMNEY AND VENT PIPE CONNECTION 5. 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 ed expert and in accordance with the pipe. appropriate manual. Installing or venting boiler 6. After it has been determined that each appliance or other gas appliance with improper methods or remaining connect
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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. sources. If you see corrosion or other deterioration, Inspect vent damper at least once a year by a contact your heating contractor for repa
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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. • Pressure test at 1/2 psig (3.5 kPa) or less. Isolate boiler from gas supply system by closing manual gas • Do not touch any electrical switch; do not use shutoff valve. any phone in your building. • Locate leakage using gas detector, noncorrosive • Immediately call your
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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. connections. Failure to do so could result in death Vent damper must be connected for boiler to operate. or serious injury. If any of the original wire as supplied with this NOTICE appliance must be r
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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. I Inducer is not an option. 16
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11 - WIRING DIAGRAMS Figure 13 - Integrated High Limit Electronic Ignition Control (240008781) 17
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11 - WIRING DIAGRAMS Figure 14 - Integrated High Limit Electronic Ignition Control (240008781) 18
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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. • 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
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13 - LIGHTING INSTRUCTIONS 5. Remove lower front panel. ! WARNING 6. Rotate the gas control knob clockwise to 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. WIRING PRESSURE REGULATOR ADJUSTMENT TERMINALS (2) (UNDER CAP SCREW) • This appliance is equipped with an ignition device OUTLET which automatically lights burner. Do NOT try to PRESSURE INLET TAP lig
