REFERENCE PLANE 6-1514-4491. GENERAL CONSTRUCTION NOTES FOR COPPER EQUIPMENT ABOVE: 1. PANEL WILL BE MANUFACTURED WITH 2 ½” NOMINAL COPPER SPLINE PIPE (2 7/8” OD X 0.400” WALL MIN.). CONSTRUCTION NOTE: BECAUSE THE TALLMAN PIPE IS SLIGHTLY DIFFERENT IN DIAMETER THAN THE DRAWING SPECIFICATIONS, THE NUMBER OF PIPES IN THE PANEL MAY CHANGE TO MAINTAIN THE OVERALL PANEL DIMENSIONS. LIKEWISE, GAPS BETWEEN THE PIPES UP TO 5/8” MAY BE USED. THIS IS A VERY COMMON AND ACCEPTED PRACTICE. IN NO WAY WILL THIS ARRANGEMENT DIMINISH THE ANTICIPATED EQUIPMENT SERVICE LIFE. 2. THE TOP PIPE WILL BE COMPLETELY COVERED WITH A 1 ¼” THICK PLATE TO PROTECT THE PIPE FROM MECHANICAL DAMAGE. 3. PANEL WILL UTILIZE A FULL BACKING PLATE TO MINIMIZE AMBIENT AIR INFILTRATION AND IMPROVE STRUCTURAL RIGIDITY OF THE OVERALL PANEL. BACKING PLATES WILL ALSO IMPROVE THE INTERFACE TO THE UPPER SHELL/CAGE. ALL WELDS TO SUPPORTING BRACKETS WILL EXTEND FROM THE STEEL BACKING PLATE, NOT THE PIPE. 4. 2” BSP 3000# COUPLINGS WILL BE USED FOR THE WATER CONNECTIONS. COUPLINGS WILL BE LABELED WITH 3” RAISED STEEL LETTERS ”S” FOR OUTLET AND ”E” FOR ENTRANCE. COUPLINGS WILL BE LOCATED EXACTLY AS SHOWN ALONG THE WIDTH OF THE PANEL. DUE TO PIPE SPACING, THE ELEVATION OF THE COUPLINGS WILL BE HELD TO WITHIN ¼” (HIGHER) O