valutazioni - 4, GPA: 4.5 ( )

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Circulator pump covered by 3-year warranty. All other parts are covered by a 1-year limited warranty. SPECIFICATIONS UNIT SIZE 042 075 112 150 187 225 Sections—Fine Grain Cast-Iron No. 2 3 4 5 6 7 GAS CONTROLS INTERMITTENT PILOT Gas Valve Honeywell Inlet Size In. 1/2 FPT Pilot Assembly Honeywell Spark Generator Honeywell Burners—Stainless/Titanium Alloy No. 1 2 3 4 5 6 Burner Orifice—Drill Size Natural 32 34 34 34 34 34 CONTROLS Limit Control Range °F 180–240 Pressure/Temperature Gage Psig °F 0–60 60–260 Pressure Relief Valve Setting Psig 30 Circulator Relay—Aquastat Honeywell (Factory Installed) CIRCULATOR Taco Model 007 Full Load Amps 0.70 Flange Size FPT In. 1-1/4 —11— DIMENSIONS BW3 MODELS 29. 23. 25 1.4 . 23 1.4. 5 5.8. 5 5.8. 1 3.4. 7. A GAS VALVE INT. PILOT CONTROL PRESSURE SWITCH BLOWER VENT CONNECTOR COMBINATION LIMIT & RELAY CONTROL 1 1.4. SUPPLY RELIEF VALVE BURNER TEMP PRESSURE GAGE 1 1.4. RETURN CIRCULATOR LEFT SIDE RIGHT SIDEFRONT DIMENSIONS (In.) CLEARANCES (In.) UNIT SIZE A VENT CONNECTION 042 11 4* 075 14-1/4 4* 112 17-1/2 4* 150 20-3/4 4* 187 24 4 225 27-1/4 4 RIGHT SIDE 6* LEFT SIDE 6 TOP 6 BACK 6 FRONT 6* *Service clearance requirement 24 in. *With factory-supplied adapter installed. RATINGS AND CAPACITIES* UNIT GAS TYPE MAX INPUT (BTUH) RATINGS HEATING CAPACITY‡ AFUE % NET RATING BOILER WATER CAPACITY (GALLONS) APPROX SHIP. WT (Lb)Btuh Btuh† BW3AAN042 Natural 42,500 36,000 84.4 31,000 1.75 211 BW3AAN075 Natural 75,000 63,000 83.4 55,000 3.00 263 BW3AAN112 Natural 112,500 94,000 83.0 82,000 4.25 320 BW3AAN150 Natural 150,000 125,000 82.7 109,000 5.50 369 BW3AAN187 Natural 187,500 155,000 82.3 135,000 6.75 418 * Gas input ratings are for elevations up to 2000 ft. For elevations above 2000 ft, reduce input 4% for each 1000 ft above sea level. † Selection factors providing for piping loss and starting load are those recommended by the Institute of Boiler and Radiator Manufacturers. Net water boiler ratings are based on an allowance of 1.15. ‡ In accordance with U.S. Government test procedures. —12— MODELS BW4 and BW5 The modern design and attractive appearance of the models BW4 and BW5 Oil-Fired Water Boilers make them ideal for installation in any area. The boilers are shipped fully assembled and wired, including all controls (except barometric draft regulator). The compact 22-gage steel cabinet has a baked-on enamel paint finish for durability. A 1-in. layer of thermal insulation is applied inside the jacket for protection and thermal efficiency. The flame retention head burner provides efficient fuel usage. A wet base cast iron block with thermal pins surrounds the combustion area for better heat transfer from flue gases to water. FEATURES BAROMETRIC DRAFT CONTROL—The factory supplied barometric draft control can easily be installed in the vent pipe for optimum draft and combustion efficiency. CONTROLS—Factory-wired controls on units with tankless hot water coil include a triple aquastat relay with high/low limit protection and circulator control. COMBINATION TRANSFORMER AQUASTAT—A 24-v transformer is combined with the aquastat assembly. The transformer will supply power efficient to power a 3-zone system on BW5 models. Factory installed combination pressure/ temperature gage and a pressure relief valve. COIL OPTIONS—Units are available with or without tankless heater coil. The coil provides a supply of hot water for normal domestic purposes or an accessory tankless heater coil can be added later. FACTORY INSTALLED FEATURES—A factory-installed drain is provided should the boi...

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