Votes - 3, Average rating: 4.3
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manual abstract
. , . . Models 181-401 - Indoor Model: Indoor LOW NOx ► Less than 40 nanograms per joule EFFICIENT ► 82% efficiency - highest of any atmospheric boiler available today THERMAL SHOCK PROOF ► Twenty-year warranty against thermal shock damage up to 150°F differential ► Maximum operating temperature: 230°F LIGHTWEIGHT ► A floor load of 70 lbs./sq. ft. or less HIGH RECOVERY ► Cuts fuel costs substantially because the standby and radiation losses normal to other boilers and tank-type water heaters are eliminated LOW WATER OPERATING TEMPERATURE ► Operates with water temperature as low as 105°F without condensing Heat Exchanger ■ ASME Inspected and Stamped 160 PSIG ■ National Board Approved ■ Headers d Cast Iron Glass-lined - Standard □ Bronze - Option A-1 ■ Finned Tubing □ Copper - Standard □ Cupro Nickel - Option A-3 ■ ASME Steel Tube Sheet ■ Silicone O-Rings ■ ASME Pressure Relief Valve □ 45 PSIG - Standard □_PSIG ASME - Optional ■ Temperature and Pressure Gauge, Shipped Loose ■ Water Connections □ Left Hand - Standard □ Right Hand - Option A-6 ■ Flow Configuration - Two-pass ■ Pump - Optional □ Mounted, 1/8 HP, 120 V, 10, 60 Hz Controls ■ 120V, 60Hz, 1 Ph Power Supply ■ 120/24V T ransformer ■ 100% Pilot Shut-off/Lockout ■ Electronic, Intermittent Ignition (IID) Pilot Controls (cont'd) ■ High Limit Control, Manual Reset ■ On/Off Switch ■ Flow Switch ■ Economaster II Pump Time Delay Gas Train ■ Natural Gas ■ Manual Main Gas Shut-off Cock ■ Main Gas Pressure Regulator ■ Redundant Safety Shut-off Valve ■ Control Valve ■ Firing Mode □ On/off (H4) □ Two-stage firing (H3) ■ Design Certified ANSI Z21.13 H Stamp Construction ■ Front Controls ■ Stainless Steel, Fan-Assisted Burners ■ Polytuf Powder Coat Finish ■ Draft Diverter ■ Base - Optional □ Combustible Floor Shield -Option J-1 Temperature Controls □ B-6 2-stage Aquastat - 100-200°F □ B-26 2-stage Digital Controller □ B-27 2-stage Digital Controller, Outdoor Reset □ Y-241 Electronic Sequencer, 1-4 Stages □ Y-281 Electronic Sequencer, 1-8 Stages Additional Safety Controls □ F-10 Low Water Cut-off Probe □ I-1 High Limit Control, Auto Reset □ S-1 Low Gas Pressure Switch □ S-2 High Gas Pressure Switch □__ □__ Regulatory Agency Requirements □_ □_ Catalog No.: 2000.203E Effective: 12-1-07 Replaces: 4-1-05 Low NOx Raytherm - Type H Hydronic Heating Boilers - Indoor Model Dimensions (Inches) Shipping Weight (Lbs.) - Approx. Model No. MBTU Input MBTU Output AFUE (%) Width A Height C J Flue Dia. K No Pump w/ Pump H-181* 181 148 82.6 18-1/4 62-5/8 12-1/16 6 191 221 H-261 264 216 82.7 22-3/8 62-7/8 11-1/8 7 214 244 H-331 334 274 N/A 25-3/4 63-3/4 10-3/4 8 234 264 H-401* 399 327 N/A 29-1/4 65-3/8 12-1/2 9 253 283 * Exceptions on H3 (two-stage-fired) models: - Model H3-181 has an 18-1/4” gas connection - Model H3-401 has 375 MBTU Input and 308 MBTU Output NOTE: Ratings shown are for elevations up to 2,000 feet. For elevations over 2,000, reduce ratings at the rate of 4% for each 1,000 feet above sea level. BOILER RATE OF FLOW AND PRESSURE DROP Model No. 10° AT 20° AT 30° AT GPM AP FT GPM AP FT GPM AP FT H-181 30 4.2 N/A N/A N/A N/A H-261 43 8.5 22 2.2 N/A N/A H-331 N/A N/A 27 3.4 N/A N/A H-401 N/A N/A 33 5.2 22 2.3 N/A - Not Applicable Raypak, Inc. ■ 2151 Eastman Avenue, Oxnard, CA 93030 ■ (805) 278-5300 ■ Fax (800) 872-9725 ■ Catalog No.: 2000.203E Effective: 12-1-07 Replaces: 4-1-05...