Assessments - 2, GPA: 4
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260 NORTH ELM STREET WESTFIELD, MA 01085 TEL. (413) 562-9631 FAX (413) 562-3799 SECTION 1: INTRODUCTION CODE COMPLIANCE Boiler installations must conform to the requirements of the authority having jurisdiction or, in the absence of such requirements, to the National Fuel Gas Code ANSI Z223.1-latest edition. Where required by the authority having jurisdiction, the installation must also conform to the Standard for Controls and Safety Devices for Automatically Fired Boilers, ANSI/ASME CSD-1. All electrical wiring must be in accordance with National Electric Code ANSI/NFPA No.70-latest edition and any additional state or local code requirements. If an external source is utilized, boiler, when installed, must be electrically grounded in accordance with requirements of the authority having jurisdiction or, in the absence of such requirements, with the National Electrical Code, ANSI/NFPA No.70-latest edition. UL listed power limited circuit cable is almost universally approved for safety controls on heating equipment, either internally or externally, without protection of conduits or raceway. For Canada, the installation must be in accordance with Standards CGA B149.1 and B149.2 Installation Codes for Gas Burning Appliances and Equipment and/or local codes. All electrical connections are to be made in accordance with Standard C.S.A. C22.1 Canadian Electrical Code, Part 1 and/or local codes. FOR MODELS SUPPLIED WITH VENT DAMPER ADD 3 5/8" TO DIM. E BOILER DIMENSIONS MODEL A B C D E GB250-S-5L 22 1/2" 18" 10 1/2" 7" 25" GB250-S-5H 22 1/2" 18" 10 1/2" 7" 25" GB250-S-6 26" 21 1/2" 12 1/2" 8" 30" GB250-S-7 29 1/2" 25" 14" 8" 30" GB250-S-8 29 1/2" 28 1/2" 15 1/2" 9" 37" GB250-S-9 36 1/2" 32" 17 1/2" 9" 37" 2" RETURN FRONT WATER LINE PRESSURE RELIEF VALVE ROLLOUT SWITCH LOW WATER CUT-OFF TAPPING 16 1/2" 3 3/4" 21 7/8" 14 3/4" 2 1/2" 20" 21" 31 1/2" *E SPILL SWITCH 8 15/16" 9 3/8" PRESSURE CONTROL 3" 3" STEAM SUPPLY 1/2" PLUGGED TAPPING 23 1/4" 28 1/2" TRANSF. 115/24V GAS VALVE PRESS. GAUGE A6 3/4" 18 1/4" 23 1/4" 26 7/8" C B D 3/4" PLUGGED 2" RETURN REAR 23 7/8" 14 3/4" 2 1/2" 18 1/8" -LEFT SIDE VIEW--FRONT VIEW--RIGHT SIDE VIEWPROBE LOCATION FOR ELECTRIC LWCO. The following terms are used throughout this manual to bring attention to the presence of potential hazards or to important information concerning the product: DANGER: Indicates an imminently hazardous situation which, if not avoided, will result in death, serious injury or substantial property damage. WARNING: Indicates a potentially hazardous situation which, if not avoided, could result in death, serious injury or substantial property damage. CAUTION: Indicates a potentially hazardous situation which, if not avoided, may result in minor injury or property damage. NOTE: Used to notify of special instructions on installation, operation or maintenance which are important to equipment but not related to personal injury hazards. 2 VENTING REQUIREMENTS When connecting to gas vents or chimneys, vent installations shall be in accordance with Part 7, Venting of Equipment, of the National Fuel Gas Code, ANSI Z223.1-latest edition, or applicable provisions of the local building codes. For Canada, the provisions of B149.1 and B149.2 shall apply. Vent connectors serving appliances vented by natural draft shall not be connected into any portion of mechanical draft systems operating under positive pressure. When two or more appliances vent into a common flue, the area of the common flue should be at least equal to the area of the largest flue plus 50% of the areas of the additional flue or vent connectors. When an existing boiler is removed from common venting system, common venting system is likely to be too large for proper venting of appliances remaining connected to it. At time of removal of existing boiler, the following steps shall be followed with each appliance remaining connected to the common venting system placed in operation, while other appliances remaining connected to the common venting system are not in operation: 1. Seal all unused openings in common venting system. 2. Visually inspect the venting system for proper size and horizontal pitch and determine there is no blockage or restriction, leakage, corrosion and other deficiencies which could cause an unsafe condition. 3. Insofar as is practical, close all building doors and windows and all doors between the space in which the appliances remaining connected to the common venting system are located and other spaces of the building. Turn on clothes dryers and any appliance not connected to the common venting system. Turn on any exhaust fans, such as range hoods and bathroom exhausts, so they will operate at maximum speed. Do not operate a summer exhaust fan. Close fireplace dampers. 4. Place in operation the appliance being inspected. Follow the lighting instructions. Adjust thermostat so appliance will operate continuously. 5. Test for spillage at draft hood relief opening after 5 minute...