Weil-McLain LGB-10 User Manual Download Page 1

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Part Number 550-141-186/0100

LGB

Read all instructions before installing

Installer

Leave all instructions with boiler for future reference.
Any claims for damage or shortage in shipment must be filed

immediately against the transportation company by the consignee.

Owner

Installation and service should be performed by qualified contractor.

Refer to

Control Supplement

for additional information

Gas–Fired Boiler

Boiler Manual

• Installation

• Start-up

• Maintenance

• Parts

Summary of Contents for LGB-10

Page 1: ...future reference Any claims for damage or shortage in shipment must be filed immediately against the transportation company by the consignee Owner Installation and service should be performed by quali...

Page 2: ...instructions first No petroleum based chemicals Hazard definitions The following defined terms are used throughout this manual to bring attention to the presence of hazards of various risk levels or t...

Page 3: ...hood 15 Piping Water boilers 16 Steam boilers 18 Multiple steam boilers 20 Jacket 21 Draft hood 21 Install boiler controls 22 Final adjustment Water boilers 24 Steam boilers 25 Placing boiler in opera...

Page 4: ...e ANSI Z233 1 latest edition or applicable local building codes Canadian installations must comply with CAN CGA B149 1 or B149 2 Installation Code Boiler installation must assure sufficient openings i...

Page 5: ...and ventilation openings to boiler room which are adequate to handle the boiler needs plus the needs of all other fuel burning appliances fireplaces and exhaust or ventilation fans Combustion and vent...

Page 6: ...Test for spillage at the draft hood relief opening after 5 minutes of main burner operation Use the flame of a match or candle f After it has been determined that each appliance remaining connected to...

Page 7: ...prove ventconnectorcapacity Vent and vent connector material and design must be determined using the individual ventingtablesoftheNationalFuelGasCode ANSIZ223 1 latestedition orotheraccepted engineeri...

Page 8: ...e foundation with airways when concrete floor is green Fire hazard Never install boiler on combustible flooring or carpeting even if a concrete or aerated foundation is used Severe personal injury dea...

Page 9: ...in order shown in Base Arrangement Table below so flue collector draft hoods jackets and gas controls are installed in correct position Burners must be properly seated in their locating slots with ope...

Page 10: ...so may cause a seal failure resulting in severe personal injury death or substantial property damage No petroleum based chemicals Do not use any cleaner containing petroleum based distillate oil Elast...

Page 11: ...ion Check sealing rope Check sealing rope of each section before proceeding to next section Boiler must be sealed gas tight to prevent possibility of flue gas spillage and carbon monoxide emissions ca...

Page 12: ...resulting in severe personal injury death or substantial property damage 5 Return 5 Return 6 Supply 6 Supply G1 G1 E1 E1 D1 D1 M1 M1 M2 M2 K1 K1 H1 H1 H2 H2 D2 D2 E2 E2 C1 C1 J1 J1 F1 F1 186 11a Tappi...

Page 13: ...g in substantial property damage Tapping Size Inches Steam Boilers Water Boilers note 4 C2 11 4 Boiler drain Boiler drain D3 D4 1 2 Gauge glass note 3 E3 E4 1 Low water cutoff note 3 Optional low wate...

Page 14: ...ly as shown in Figure 12 Figure 12 Cleanout plate assembly Gas tight seal 2d Boiler assembly cleanout plates Cleanout plates must be sealed gas tight to prevent possibility of flue gas spillage and ca...

Page 15: ...h 3 Mount hood on section assembly Fasten with washers and nuts Apply retort cement between bottom of sections and top of base assembly See Figure 13 Sealing the boiler Boiler must be sealed gas tight...

Page 16: ...potential of boiler thermal shock See Weil McLain Bulletin AE 8402 6 Multiple boilers see Figure 15 page 17 7 Piping should be sized for a 20 F rise through the boiler See Table 1 below For higher flo...

Page 17: ...tank s relief valves and other accessories are required but not shown Refrigeration system piping The boiler must be installed so that chilled medium is piped in parallel with the heating boiler with...

Page 18: ...gh LGB 12 single riser Figure 18 Steam boiler piping for LGB 13 through LGB 23 riser each end 3b Piping steam boilers Improper piping systems and or undersized piping can contribute to erratic boiler...

Page 19: ...m Condensate Minimum Condensate Receiver Capacity gallons Select minimum receiver capacity based on time minutes required for condensate to return to the receiver Recommended Feed Pump Capacity lbs ho...

Page 20: ...rollers burners etc areomittedinordertoemphasizesteamandreturnpiping Provideaseparatefeedpumpforeachboiler Alternatively provideaseparateautomaticvalvewithendswitchandasinglefeedpump When valves are u...

Page 21: ...emble as shown in Figure 21 Figure 21 Draft hood attachment 4 Jacket 5 Draft hood Do not alter draft hood or place any obstruction in breeching or vent system Flue gas spillage and carbon monoxide emi...

Page 22: ...and 23 Install relief valve s blowdown valve and other items as given in Figures 11a or 11b pages 12 and 13 2 Install water level control s as shown in Figures 22 and 23 and Table 4 below If water le...

Page 23: ...e 1 x 4 2 2 Union 1 2 3 Nipple 1 x 2 2 4 Cross 1 2 5 Nipple 1 x 2 1 6 Nipple 1 x 7 1 used only with Model 61 lwco cut to fit for other controls 7 Plug 1 2 8 Nipple 1 x 3 not included 9 Nipple 1 x cut...

Page 24: ...Fill to correct system pressure Correct pressure will vary with each application 3 Open automatic air vent one turn if used 4 Starting on the lowest floor open air vents one at a time until water squ...

Page 25: ...raps and air vents for proper operation Cleaning compounds Clean all newly installed steam boilers to remove oil and grease Failure to properly clean can result in violent fluctuations of water level...

Page 26: ...ne by a qualified service technician particularly if pilot outages are common Ask your propane dealer or service technician to periodically check the odorant level of your gas Have a qualified service...

Page 27: ...or pressure requirements of system 13 For multiple zones flow adjusted so it is about the same in each zone water boilers only 14 Boiler cycled with operating control Raise to highest setting Boiler s...

Page 28: ...oughly Operations such as sawing blowing tear out and spraying may generate airborne fiber concentration requiring additional protection First Aid measures Eye contact Flush eyes with water to remove...

Page 29: ...1 Check relief valve Refer to relief valve manufacturer s instructions on relief valve tag 2 Test low water cutoff if used Blowdown if low water cutoff is float type Refer to low water cutoff manufact...

Page 30: ...s may appear caused by dust 3 Improper flame a Overfired Flames large b Underfired Flames small c Lack of primary air Yellow tipping on flames sooting will occur Figure 24 Typical pilot burner flame F...

Page 31: ...ut plates 3 Remove burners from base of boiler Follow Clean main burners below to thoroughly clean burners Place newspaper in base of boiler to collect soot 4 With a wire flue brush clean between sect...

Page 32: ...2 11 Replacement parts Base Insulation Table Base Size Note 1 Base Insulation Size Note 2 4 4 5 5 A A B B C C D A and K E B and K F A and J G B and J Notes 1 See page 9 Base Arrangement Table to deter...

Page 33: ...ight End Section 3318 313 300 106 21 Roll Pin 1 8 x 2 562 930 236 9 Base Insulation Front or Back Also see Base Insulation Table 4 591 221 118 22 Base Back Panel 4 450 003 598 5 591 221 119 5 450 003...

Page 34: ...9 32 1 2 71 2 2 1 1 4 2 1 1 12 2 6 2 5 1 14 LGB 15 2 6 2 5 73 19 35 76 2 2 1 1 4 2 1 2 14 LGB 16 2 6 2 5 78 21 1 2 37 1 2 81 2 2 1 1 4 2 1 2 14 LGB 17 2 6 2 5 83 21 1 2 40 86 2 2 1 1 4 2 1 2 14 LGB 18...

Page 35: ...ttent Electronic Ignition Pilot System Electronically Supervised Pilot Burner Main Flame Sensor 8 Intermittent Ignition Control System LGB 4 and LGB 5 only Intermittent Ignition Control Module Electro...

Page 36: ...ed Boiler Weight Chimney Breeching Size I D Note 1 Note 2 Note 2 Square Feet Steam MBH Steam Note 2 MBH Water Note 2 Steam to Waterline Water lbs Models PLGB Note 4 Inches Note 5 LGB 4 400 324 0 1013...

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