Weil-McLain Comprehensive Guide to Boiler Piping Diagram and Hartford Loop Steam Boiler Piping

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• Installation • Start-Up • Maintenance • Parts

8 Connect steam boiler piping (continued)

Figure 15 Model 380 through 580 steam boiler piping — NOTE minimum 24 inches between boiler water line and bottom of header.

Figure 16 Model 680 through 980 steam boiler piping — NOTE minimum 24 inches between boiler water line and bottom of header.

Part No. 550-141-935/0602

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Contents Boiler Manual Contents Installation must comply with Before installing boilerBefore selecting boiler location Lay a foundation, if neededProvide combustion and ventilation air openings Using crane attach free end of cables to eye of crane For block assemblySet boiler in place For packaged boilerAssemble block Install back refractory blanketPrepare back section Place a block under pipe to hold section uprightPrepare remaining sections Install intermediate sectionsIf using tankless heater TI sections Prepare boiler and test Perform hydrostatic pressure testInstall cleanout plates Complete block assemblyInstall burner mounting plate on front section Flue collector assembly Install flue collectorInstall collector hold-down bolts Prepare flue collector hood assemblyInstall flue collector After installing flue collector, ALL Boilers Before installing flue collectorRear flue boilers only Top flue boilers onlyInstall flue collector General water piping information Install pipingConnect water boiler piping Size secondary boiler pump GPM based on following formulas Piping for multiple boilers see FigureGeneral steam piping information Connect steam boiler pipingConnect steam boiler piping Condensate piping to boiler Condensate receiver capacity Multiple Steam Boiler Piping Gravity Condensate Return Before installing jacket Install jacketInstall support brackets and rails Install jacket front and rear panelsInstall jacket Install jacket trim Install jacket side panelsInstall jacket top panels Jacket side panel placement Models 380, 480, 580 Jacket side panel placement Models 780, 880 Jacket side panel placement Models 1080, 1180, Jacket top panel placement Size piping no smaller than heater inlet and outlet Pipe tankless heatersTo pipe tankless heaters Install controls Install water boiler controlsInstall controls where shown in and Figure Install steam boiler controlsWater level control locations see Table Select type of venting system Connect breeching and venting systemsGeneral venting information Construct metal breeching Make final adjustments Install burnerWiring and fuel piping Check boiler for gas-tight seal Freeze protection when usedDimensions and ratings Dimensions and ratings Parts Parts Eye Irrigate immediately Breathing Fresh air Handling ceramic fiber and fiberglass materialsPropane boilers propane gas odorant All Residential & Commercial Cast Iron Boilers

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