Overview of Primary Product

Part Number 550-141-186/0914
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LGB 3ERIES'AS&IRED"OILER"OILER-ANUAL
+6
Piping
multiple
steam boilers
3c
Piping — multiple steam boilers
:
1 %ACHBOILERHASABOILERFEEDPUMPCONTROLLERNOTSHOWN,EVELCONTROLS3ECTIONMUSTBEMOUNTEDONSAMESIDEOFBOILERASRETURN
2 -OUNTEACHBOILERFEEDPUMPCONTROLLERWITHBODYMARKATTHELEVELINDICATEDIN4ABLEPAGEAND&IGUREPAGE
3 ,OCATESYSTEMSTEAMSUPPLYTAKEOFFOUTBOARDFROMTHEBOILERCONNECTINGPIPINGASSHOWNTOASSURELIQUIDINLINEWILLmOWTOTRAP
4 Locate combined header drain as shown. Install strainer and float and thermostatic trap in drain line as shown. Pipe trap outlet to condensate
receiver.
5 3IZETHECOMMONHEADERPIPINGPER!3(2!%RECOMMENDATIONSANDINNOCASESMALLERTHANTHEINDIVIDUALBOILERHEADERS
6 Pipe the Hartford Loop tee 4” below boiler waterline.
7 Boiler controls and trim (valves, low water cutoffs, pump controllers, burners, etc.) are omitted in order to emphasize steam and return piping.
8 Provide a separate feed pump for each boiler. Alternatively, provide a separate automatic valve with end switch and a single feed pump. When
valves are used, activate the valve with the boiler pump controller. Activate the feed pump with the valve end switch.
9 -ANUALSTEAMVALVEORSLOWOPENINGAUTOMATICSTEAMVALVESIZEDTOBOILEROUTPUTCAPACITY
10 "OILERSTEAMHEADERFORSINGLEBOILERSEEPAGE
11 )NSTALLAmOATANDTHERMOSTATICTRAPANDSTRAINEROFFTHEEQUALIZEROFEACHBOILERFROMTOINCHESABOVETHEWATERLINE#ONNECTTHETRAP
outlet to the condensate receiver. The trap will prevent an idle boiler from flooding due to condensed steam from the system.