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rEIR B011 EIRS <br />J I u 1,121; <br />Alternative Piping -for LGBTM-4 through 12 only: <br />If desired, all three piping connections (supply, <br />return and expansion tank) can be taken off <br />same end of boiler. <br />Supply and return sizes in table below for water <br />boilers refer to minimum size of pipe connected <br />to boiler for 20, or higher temperature drop <br />between supply and return. <br />�N AM B0IIII IIII III III° <br />8 <br />