Raypak 181-401 Specification

Raypak 181-401 Specification Manual pdf 1 page image

Catalog No.: 2000.203E Effective: 12-1-07 Replaces: 4-1-05Job:Engineer:Contractor:Prepared By: Date:Model: IndoorLOW NOx Less than 40 nanograms per jouleEFFICIENT 82% efficiency – highest of any atmospheric boileravailable todayTHERMAL SHOCK PROOF Twenty-year warranty against thermal shock damageup to 150°F differential Maximum operating temperature: 230°FLIGHTWEIGHT A floor load of 70 lbs./sq. ft. or lessHIGH RECOVERY Cuts fuel costs substantially because the standby andradiation losses normal to other boilers andtank-type water heaters are eliminatedLOW WATER OPERATING TEMPERATURE Operates with water temperature as low as105°F without condensingHeat Exchanger ASME Inspected and Stamped160 PSIG National Board Approved HeadersCast Iron Glass-lined – StandardBronze – Option A-1 Finned TubingCopper – StandardCupro Nickel – Option A-3 ASME Steel Tube Sheet Silicone O-Rings ASME Pressure Relief Valve45 PSIG – StandardPSIG ASME – Optional Temperature and Pressure Gauge,Shipped Loose Water ConnectionsLeft Hand – StandardRight Hand – Option A-6 Flow Configuration – Two-pass Pump – OptionalMounted, 1/8 HP, 120 V, 1∅, 60 HzControls 120V, 60Hz, 1 Ph Power Supply 120/24V Transformer 100% Pilot Shut-off/Lockout Electronic, Intermittent Ignition (IID) PilotControls (cont'd) High Limit Control, Manual Reset On/Off Switch Flow Switch Economaster II Pump Time DelayGas Train Natural Gas Manual Main Gas Shut-off Cock Main Gas Pressure Regulator Redundant Safety Shut-off Valve Control Valve Firing ModeOn/off (H4)Two-stage firing (H3) Design CertifiedANSI Z21.13 H StampConstruction Front Controls Stainless Steel, Fan-AssistedBurners Polytuf Powder Coat Finish Draft Diverter Base – OptionalCombustible Floor Shield –Option J-1Temperature ControlsB-6 2-stage Aquastat –100-200ºFB-26 2-stage Digital ControllerB-27 2-stage Digital Controller,Outdoor ResetY-241 Electronic Sequencer,1-4 StagesY-281 Electronic Sequencer,1-8 StagesAdditional Safety ControlsF-10 Low Water Cut-off ProbeI-1 High Limit Control, AutoResetS-1 Low Gas Pressure SwitchS-2 High Gas Pressure SwitchRegulatory Agency RequirementsRaytherm® - Type HHydronic Heating BoilersModels 181-401 - IndoorLow NOx

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