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For assistance or additional informa• BSI172 • BSI310 • BSI345 tion, consult a qualified installer, service agency or the gas supplier. Read these instructions • BSI379 carefully before installing. Manufacturer of Hydronic Heating Products P.O. Box 14818 3633 I. Street Philadelphia, PA 19134 Tel: (215) 535-8900 • Fax: (215) 535-9736 • Table of Contents I. Product Description .................................................. 1 II. Specifications ............................................................. 2 III. Before Installing ......................................................... 3 IV. Locating the Boiler ...................................................... 3 V. Air for Combustion & Ventilation .............................. 4 VI. Venting ....................................................................... 8 VII. Gas Piping ................................................................ 11 VIII. System Piping .......................................................... 12 IX. Indirect Water Heater Piping............................................15 X. Wiring ........................................................................ 16 XI. Start-Up & Checkout ............................................... 23 XII. Service & Maintenance .......................................... 31 XIII. Troubleshooting ..................................................... 34 XIV. Parts ......................................................................... 41 Appendix A: Knockdown Boiler Assembly..........................47 I Product Description The BSI series boilers are low pressure cast iron gas fired steam boilers designed for use in closed steam heating systems. These boilers are Category I draft diverter equipped appliances, which must be vented by natural draft using a lined masonry or listed metal chimney system. An adequate supply of air for combustion, ventilation and dilution of flue gases must be available in the boiler room. These boilers are not designed for use in process or other “open” steam systems 1 II Specifications FIGURE 1: BSI BOILERS - GENERAL CONFIGURATION TABLE 1: BSI SPECIFICATIONS BASIC BOILER MODEL NUMBER OF SECTIONS INPUT (MBH) (MBH) HEATING CAPACITY I=B=R NET RATING, STEAM (%) AFUE DIMENSIONS (in.) WATER VOL. ** (Sq. ft) (MBH) "A" "B" "C" "D" (Gal) BSI069S BSI069E 3 69 57 179 43 80.0 81.9 12 3/4 28 40 7/16 4 5.1 BSI103S BSI103E 4 103 85 267 64 80.0 82.0 16 28 40 7/16 5 6.5 BSI138S BSI138E 5 138 113 354 85 80.3 82.0 19 1/4 28 40 7/16 6 7.9 BSI172S BSI172E 6 172 142 446 107 80.6 82.1 22 1/2 28 40 7/16 6 9.3 BSI207S BSI207E 7 207 171 533 128 80.9 82.1 25 3/4 30 40 7/16 7 10.7 BSI241S BSI241E 8 241 199 621 149 80.0 82.2 29 30 40 7/16 7 12.1 BSI276S BSI276E 9 276 227 708 170 80.3 82.2 32 1/4 30 40 7/16 8 13.5 BSI310S BSI310E 10 310 255 800 192 82.5* 35 1/2 30 45 7/16 8 14.9 BSI345S BSI345E 11 345 284 892 214 82.5* 38 3/4 30 45 7/16 9 16.3 BSI379S BSI379E 12 379 312 979 235 82.5* 42 30 45 7/16 9 17.7 *Combustion efficiency ** Volume to normal water line NOTE: BSI345 and BSI379 not available for use with LP gas. Suffix E = Intermittent Ignition, Suffix S = Standing Pilot. Add Suffix N for Natural Gas or Suffix L for Propane Gas to basic BSI model number (example: BSI207SN, BSI207SL) 2 III Before Installing 1) Safe, reliable operation of this boiler depends upon installation by a professional heating contractor in strict accordance with this manual and the requirements of the authority having jurisdiction. • In the absence of an authority having jurisdiction, installation must be in accordance with this manual and the National Fuel Gas Code, ANSI Z223.1-latest edition. • Where required by the authority having jurisdiction, this installation must conform to the Standard for Controls and Safety Devices for Automatically Fired Boilers (ANSI/ASME CSD-1)-latest edition. Warning This Product Must be Installed By A Licensed Plumber Or Gas Fitter when Installed Within The Commonwealth Of Massachusetts 2) Make sure that a properly sized chimney is available which is in good condition. Consult the authority having jurisdiction, Part VI of this manual, and the National Fuel Gas Code for additional information on venting requirements. 3) Make sure that the boiler is correctly sized. Use an industry accepted sizing method such as the I=B=R Installation Guide for Residential Hydronic Heating Systems (Pub. #200) and I=B=R Heat Loss Calculation Guide (Pub. #H21 or #H22) published by the Hydronics Institute in Berkeley Heights NJ. 4) Make sure that the boiler received is configured for the correct gas (natural or LP). The BSI345 and BSI379 may only be used with natural gas. 5) Boilers installed at altitudes above 2000 ft. require different burners and main burner orifice than those at sea level. Make sure that the boiler is configured for use at the correct altitude. 6) If this boiler was received as a knockdown boiler, follow the instructions in Appendix A to assemble the boiler. IV Lo...

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