Assessments - 2, GPA: 3.5
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For assistance or additional information, consult a qualified installer, service agency or the gas supplier. Read these instructions carefully before installing. CROWN Boiler Co Manufacturer of Hydronic Heatings Products P.O. Box 14818 3633 I. Street Philadelphia, PA 19134 Tel: (215) 535-8900 • Fax: (215) 535-9736 • INSIDE FRONT COVER (LEAVE BLANK) Table of Contents I. Product Description .................................................. 1 VIII. System Piping ............................................. 12 II. Specifications ............................................................ 1 IX. Wiring ......................................................... 16 III. Before Installing ......................................................... 4 X. Start-Up & Checkout .................................. 21 IV. Locating the Boiler ...................................................... 4 XI. Service & Maintenance ............................... 27 V. Air for Combustion & Ventilation .............................. 5 XII. Troubleshooting ......................................... 29 VI. Venting ....................................................................... 8 XIII. Parts ............................................................ 34 VII. Gas Piping ................................................................ 11 I Product Description The AWI series boiler is a cast iron gas fired water boiler designed for use in closed forced circulation heating systems. This boiler is a Category I draft diverter equipped appliance, 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. The TWI series boiler is identical to corresponding sized AWI boiler except for the addition of baffles in the flue passages to obtain higher AFUEs. The TWI is not available with a standing pilot or for use with propane gas. II Specifications FIGURE 1A: STANDARD CONFIGURATION (SEE PAGE 3 FOR LETTER DIMENSIONS) 1 FIGURE 1B: “LEFT PIPED” CONFIGURATION FIGURE 1C: “TOP PIPED” (T-AWI OR T-TWI) CONFIGURATION 2 TABLE 1: SPECIFICATIONS BASIC BOILER MODEL NATURAL AND LP GASESRATINGS DIMENSIONS (INCHES) NUMBER OF SECTIONS INPUT DOE HEATING CAPACITY I=B=R NET RATING, WATER AFUE "A" "B" "C" "D" "E" "F" MBH MBH MBH % AWI037S AWI037E 2 37 30 26 80.0 82.3 10-1/2 27-7/8 7-1/4 4 3-5/8 3-7/8 AWI061S AWI061E 3 61 50 43 80.0 82.6 11-3/4 5-7/8 4 3-5/8 1-7/8 AWI095S AWI095E 4 95 78 68 80.1 82.3 15 7-1/2 5 4-1/8 1-7/8 AWI128S AWI128E 5 128 105 91 80.2 82.0 18-1/4 9-1/8 6 4-5/8 1-7/8 AWI162S AWI162E 6 162 132 115 80.3 81.7 21-1/2 10-3/4 6 4-5/8 1-7/8 AWI195S AWI195E 7 195 159 138 80.4 81.4 24-3/4 29-7/8 12-3/8 7 5-1/8 1-7/8 AWI229S AWI229E 8 229 186 162 80.4 81.2 28 14 7 5-1/8 1-7/8 AWI262S AWI262E 9 262 212 184 80.5 80.9 31-1/4 15-5/8 8 5-5/8 1-7/8 AWI295S AWI295E 10 295 238 207 80.7 80.6 34-1/2 17-1/4 8 5-5/8 1-7/8 BASIC BOILER MODEL NUMBER OF SECTIONS NATURAL GAS ONLYRATINGS DIMENSIONS (INCHES) INPUT DOE HEATING CAPACITY I=B=R NET RATING, WATER AFUE "A" "B" "C" "D" "E" "F" MBH MBH MBH % TWI061E 3 61 51 44 83.0 11-3/4 5-7/8 4 3-5/8 1-7/8 TWI095E 4 95 79 69 83.0 15 27-7/8 7-1/2 5 4-1/8 1-7/8 TWI128E 5 128 106 92 83.0 18-1/4 9-1/8 6 4-5/8 1-7/8 TWI162E 6 162 134 117 83.0 21-1/2 10-3/4 6 4-5/8 1-7/8 Notes: Suffix E = Intermittent Ignition, Suffix S = Standing Pilot Add Suffix N for Natural Gas or Suffix L for Propane Gas to basic AWI Boiler Model shown (Example: AWI295EN, AWI229SL) 3 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. 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: • For heating systems employing convection radiation (baseboard or radiators) use an industry accepted sizing method such as the I=B=R Heat Loss Calculation Guide (Pub. #H21 or #H22) published by the Hydronics Institute in Berkeley Heights NJ. • For new radiant heating systems refer to the radiant tubing manufacturer’s boiler sizing guidelines. • For systems including a Crown Mega-Stor indirect water heater, size the boiler to have either the DOE Heating Capacity required for the Mega-Stor or the net rating required for the heating system, whichever result...
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