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Assembled sections are tested to 75 psig at the factory. The maximum allowable pressure is 50 psig for hot water boilers. PROPANE CONVERTIBLE—With factory approved conversion kit accessory. WARRANTY—The aluminum sections are covered by a limited 15-year warranty on the entire assembly. Circulator pump is covered by a limited 3-year warranty. All other parts are covered by a 1-year limited warranty. SPECIFICATIONS UNIT SIZE 050 075 100 Sections 1 GAS CONTROLS Gas Valve Honeywell Inlet Size In. 1/2 Ignition Hot Surface Ignition Burner—Stainless/Titanium Alloy 1 Burner Orifice No. 0.0615 #48 #44 CONTROLS Limit Control Range °F 100-200 Pressure Relief Valve Setting Psig 30 Integrated Boiler Control UTEC factory installed CIRCULATOR Taco Model 007 Full Load Amps 2.0 AMPS/330 WATTS Flange Size FPT In. 1-1/4 —5— DIMENSIONS MODEL BW9 ALTERNATE SUPPLY & RETURN OPENINGS (1-1/4" NPT (31.75mm) CONNECTIONS PROVIDED INSIDE BOILER CABINET) ACCESS PANEL ALTERNATE OPENING FOR GAS SUPPLY BOILER WATER TEMPERATURE & PRESSURE GAUGE FRONT PANEL DOOR PULL LEVELING FEET CONDENSATE DRAIN FITTING (1/2" PVC) (12.7mm) OPENING FOR RELIEF VALVE DISCHARGE PIPE OPENING FOR AIR VENT AND EXPANSION TANK CONNECTION ALTERNATE BOILER WATER SUPPLY AND RETURN (31.75mm) CONNECTIONS (1-1/4" NPT BOILER CABINET) PROVIDED INSIDE DRAIN VENT CONNECTION (2" CPVC) (50.8mm) 5" (127mm) JUNCTION BOX FOR 120 V POWER, 120 V CIRCULATOR BEADS, AND 24 V THERMOSTAT LEADS VENT CONNECTION (2" CPVC) (50.8mm) ALTERNATE GAS SUPPLY OPENING ALTERNATE OPENING FOR VENT TEE GAS SUPPLY OPENING (1/2" NPT) (12.7mm) COMBUSTION AIR INTAKE FITTING (2" PVC) (50.8mm) STANDARD BOILER WATER SUPPLY & RETURN OPENINGS (1-1/4" NPT (31.75mm) CONNECTIONS PROVIDED INSIDE BOILER CABINET) A99156 CLEARANCES UNIT COMBUSTIBLE (in.) ACCESSIBILITY/CLEANING (in.) SERVICING (in.) TOP 1 8 8 LEFT SIDE 1 24 24 RIGHT SIDE 8 — — BASE 1 — — FRONT 0 24 24 BACK 1 — — INTAKE/VENT PIPING 0 — — NEAR BOILER HOT WATER PIPING 1 — — * Service clearance requirement 24-in. RATINGS AND CAPACITIES* UNIT GAS TYPE MAX INPUT (BTUH) HEATING CAPACITY (BTUH) AFUE % NET RATING Btuh† BOILER WATER CAPACITY (GALLONS) APPROX SHIP. WT (Lb) BW9AAN050 Natural 50,000 45,000 90 39,000 2.6 220 BW9AAN075 Natural 75,000 68,000 90 59,000 2.6 220 BW9AAN100 Natural 100,000 90,000 90 78,000 2.6 220 * Gas input ratings are for elevations up to 2000 ft. In the USA, for elevations above 2000 ft., reduce input per the charts supplied in the high altitude derate kits. In Canada, boilers may be used at high altitude by using a certified field conversion kit. —6— MODELS BS1 and BS2 Models BS1 and BS2 Gas-Fired Steam Boilers provide fast heat quietly and economically to assure the finest in hydronic heating. These boilers provide quality design in a small, compact unit easily installed in a basement, garage, or utility room. They can be installed on a combustible floor when an optional combustible floor base is used. The model BS1 and BS2 design is CSA and A.G.A. certified for use with natural and is convertible to propane gas with accessory kit. FEATURES RANGE OF CAPACITIES—Sizes 75,000 through 299,000 Btuh input are available. COMPLETELY PACKAGED—Each boiler is completely assembled, including all controls (except room thermostat). All necessary wiring is factory installed. The boiler is ready for gas, water, room thermostat, and electrical connections as shipped. THERMAL-PIN, CAST-IRON SECTIONS—These sections speed heat transfer from the flue gases to the boiler water, with faster thermostat response, providing greater comfort and eco...

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