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Home My WebLink AboutB17-0132_Sundance KBX-PS-051 Boiler Specs_1496867580.pdfKB-400 KB-501 KB-601 KB-701 KB-801 WATER GALLON CAPACITY 3.4 4.2 4.2 5.0 5.7 HEATING SURFACE (SQ. FT.) 41.8 50.8 50.8 57.8 65.3 WATER CONNECTIONS 1-1/2 1-1/2 2" 2" 2" DRAIN 3/4 3/4 3/4" 3/4" 3/4" 20°F ∆ HEAD LOSS (FT. OF HD.) 21 23 31 30 33 35°F ∆ MAX. WORKING PRESSURE (PSI) 160 160 160 160 160 RELIEF VALVE SIZE 3/4 3/4 3/4" 3/4" 3/4" RELIEF VALVE RATING (MBH) 697 697 697 1,352 1,352 GAS INLET CONNECTION 1 1 1" 1" 1" MAX. INLET PRESSURE, NAT 14 w.c. 14 w.c. 14 w.c. 14 w.c. 14 w.c. MIN. INLET PRESSURE, NAT 4.0 w.c. 4.0 w.c. 4.0 w.c. 4.0 w.c. 4.0 w.c. MAX. INLET PRESSURE, LP 14 w.c. 14 w.c. 14 w.c. 14 w.c. 14 w.c. MIN. INLET PRESSURE, LP 8.0 w.c. 8.0 w.c. 8.0 w.c. 8.0 w.c. 8.0 w.c. BTU/HR INPUT 399,000 500,000 600,000 700,000 800,000 BTU/HR OUTPUT (HIGH FIRE) 372,267 466,500 567,600 660,100 752,000 BTU/HR OUTPUT (LOW FIRE) 74,453 93,300 113,520 132,020 150,400 ELECTRICAL VOLTAGE/HEATER 120 120 120 120 120 TOTAL AMPS 1.5 1.7 2.7 2.7 2.7 DIMENSIONS HEIGHT 42-1/2 42-1/2 42-1/2" 42-1/2 42-1/2 WIDTH 15-1/2 15-1/2 15-1/2" 15-1/2" 15-1/2" DEPTH 27 31-1/4 36-1/4" 40-1/4" 45-1/4" SERVICE CLEARANCES FRONT 24 24 24 24 24 BACK 14 14 14 14 14 RIGHT SIDE 0 0 0 0 0 LEFT SIDE (PIPING) 24 24 24 24 24 TOP 24 24 24 24 24 DIRECT VENTING SIZE 4 4 4" 6" 6" VENT CATEGORY IV IV IV IV IV VENT MATERIAL PVC PVC PVC PVC PVC KBX-PS-05 (Replaces KBX-PS-04 06/10) 08/13-Printed in U.S.A. Lochinvar, LLC · 300 Maddox Simpson Pkwy · Lebanon, TN 37090 · 615-889-8900 / Fax: 615-547-1000 www.Lochinvar.com KNIGHT XL® BOILER PRODUCT SUMMARY (KB) 399,000 - 800,000 BTU/HR 06/07/17