Utica MGB100 Troubleshooting Guide

P/N# 240009276, Rev. A [03/2012]RETAIN THESE INSTRUCTIONS FOR FUTURE REFERENCEThese instructions must be affi xed on or adjacent to the boiler.GAS FI

10Figure 6 - BYPASS PIPING - CIRCULATOR ON SUPPLYFigure 7 - BYPASS PIPING - CIRCULATOR ON RETURNBypass Piping Required For High Mass (Large Water Cont

11Boilers connecting to gas vents or chimneys, vent installations shall be in accordance with “Venting of Equipment”, of the National Fuel Gas Code, A

12Minimum Vent Pipe ClearanceWood and other combustible materials must not be closer than 6” from any surface of single wall metal vent pipe. Listed T

138 - VENT DAMPER OPERATIONFigure 8 - Vent Damper Installation Figure 9 - Vent Damper PlacementAnnually check vent damper and all fl ue product carryin

149 - GAS SUPPLY PIPINGCAUTIONWHAT TO DO IF YOU SMELL GAS• Do not try to light any appliance.• Do not touch any electrical switch; do not use any phon

1510 - ELECTRICAL WIRINGElectrically bond boiler to ground in accordance with requirements of authority having jurisdiction. Refer to:• USA- Na

1611 - WIRING DIAGRAMSFigure 12 - Integrated High Limit Electronic Ignition Control (240008781)IInducer is not an option. WARNINGModifi cation, substit

1711 - WIRING DIAGRAMSFigure 13 - Integrated High Limit Electronic Ignition Control (240008781)

1811 - WIRING DIAGRAMSFigure 14 - Integrated High Limit Electronic Ignition Control (240008781)

1912 -GENERAL INSTRUCTIONSFILLING SYSTEM WITH WATER• Close air vents on all radiation units. Open valves to these units. • Verify boiler and expansion

21 - DIMENSIONSTable 1 - DimensionsBOILER MODEL NUMBERDIMENSIONS (INCH.)FLUE DIAMETER“A” WIDTHGWB8-245E-2/GWB8-262E-2727½GWB8-280E-2/GWB8-299E-27 30¾A

2013 - LIGHTING INSTRUCTIONS1. STOP! Read the safety information above. 2. Set the thermostat to lowest setting.3. Turn off all electric power to the

2114 - OPERATING YOUR BOILERAUTOMATIC GAS VALVEAutomatic Gas Valve opens or closes according to heat requirements of thermostat and temperature limit

2214 - OPERATING YOUR BOILERCHECK THERMOSTAT OPERATIONA. When set above temperature indicated on thermostat, boiler should ignite. B. Verify thermost

2315 - MAINTAINING YOUR BOILERBURNERSBeginning of heating season visually check pilot and main burner fl ames. See Figure 16.SAFETY RELIEF VALVERefer t

24EQUIPMENT AND OPTIONAL ACCESSORIES - WHAT THEY DO16 - SERVICE HINTSYou may avoid inconvenience and service calls by checking these points before you

2517 - EQUIPMENT AND OPTIONAL ACCESSORIES EXPANSION TANKExpanding water fl ows into expansion tank. Tank should be correct size. Tank is fi lled with ai

26BLOCKED VENT SAFETY SWITCH(BLOCKED VENT SAFETY SHUTOFF)Blocked vent safety switch is manual reset disc thermostat with fi xed setpoint (340°F (171°C)

27APPENDIX A - CONTROL MODULEA.1 Installation Environment Considerations WARNINGIf you do not follow these instructions exactly, a fi re or explosion m

28APPENDIX A - CONTROL MODULEA.5 OperationModule continuously monitors boiler water temperature and fi res or shuts off burner based on this temperatur

29APPENDIX A - CONTROL MODULEA.6 Boiler High Limit Temperature Controller• When water temperature reaches setpoint, controller ends heating cycle. • W

32 - BOILER RATINGS AND CAPACITIES Table 2 - Ratings and CapacitiesBOILER MODEL NUMBER (1)† NATURAL GAS † PROPANE GAS AFUE Input (3) MbhH

30APPENDIX A - CONTROL MODULETable 7 - Troubleshooting Error CodesError Code NumberDefi nition Consequence4 Flame current too low. Check for fl ame. Non

31APPENDIX A - CONTROL MODULE— If fl ame rod or bracket is bent out of position, restore to correct position.STEP 3: Check spark ignition circuit. Disc

PRODUCT LITERATURELennox Industries Inc.Dallas, TexasManufactured by:ECR International, Inc.2201 Dwyer Avenue, Utica NY 13501web site: www.ecrinterna

43 - TABLE OF CONTENTSIMPORTANT: Read the following instructions COMPLETELY before installing!!KEEP THIS MANUAL NEAR BOILERRETAIN FOR FUTURE REFERENCE

54 - INSTALLATION PROCEDURETable 3 - MINIMUM CLEARANCE DIMENSIONSInches (mm)Top 6” (152mm)Rear 6” (152mm)Control Side 7” (178mm)Opposite Side 6” (152m

65 - VENTILATION & COMBUSTION AIRProvide combustion air and ventilation air in accordance with the section “Air for Combustion and Ventilation,” o

76 - CONNECTING SUPPLY AND RETURN PIPINGRELIEF VALVEDISCHARGE LINECheck local codes for maximum distance from fl oor or allowable safe point of dischar

86 - CONNECTING SUPPLY AND RETURN PIPING WARNINGBurn and scald hazard. Safety relief valve could discharge steam or hot water during operation. In-

9Figure 5 - Chilled Water PipingFigure 4 - Typical Hot Water Piping6 - CONNECTING SUPPLY AND RETURN PIPING