Raypak Raytherm - Type WH 926-1758 Specifications

Catalog No.: 2000.22N Effective: 12-1-07 Replaces: 10-15-03Job:Engineer:Contractor:Prepared By: Date:Model:EFFICIENT 82% thermal efficiency – highest of any atmosphericboiler available 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 are eliminatedLOW WATER OPERATING TEMPERATURE Operates with water temperature as low as 105°Fwithout condensingHeat Exchanger ASME Inspected and Stamped160 PSIG National Board Approved HeadersGlass-lined Cast Iron – StandardBronze – Option A-1 Finned TubingCopper – StandardCupro Nickel – Option A-3 ASME Steel Tube Sheet Silicone O-Rings 60 PSIG ASME Pressure Relief Valve Temperature and Pressure Gauge(Boiler) Water ConnectionsLeft Hand – StandardRight Hand – Option A-6 Flow ConfigurationTwo-pass – StandardSingle-pass (Cast Iron Only) Pump, Rear-mounted (Optional)4.25” Impeller4.7” ImpellerControls 120V, 60Hz, 1 Ph Power Supply 120/24V Transformer 100% Pilot Shut-off/Lockout Electronic, Intermittent Ignition (IID)Pilot High Limit Control, Manual ResetControls (cont.) On/Off Switch Flow Switch Economaster II Pump Time DelayGas Control Train 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)Four-stage Firing (H9)Mechanical Modulation,110-170°F (H5)Mechanical Modulation,150-210°F (H1)Motorized Modulation (H2)B-6000 (H6) FuelNatural GasPropane Gas Design Certified ANSI Z21.13/CSA 4.9Construction Front Controls Stainless Steel Burners Polytuf Powder Coat Finish Stackless Top Base (Optional)Combustible Floor Shield – Option J-1Temperature ControllersNote: H1 and H5 do not require a controllerB-7 ModulatingB-5 Modulating, Outdoor ResetB-6 Two-stageB- Four-stage DigitalY-241 Electronic Sequencer,1-4 StagesY-281 Electronic Sequencer,1-8 StagesAdditional Safety ControlsF-9 Low Water Cut-off ProbeI-1 High Limit Control,Auto ResetS-1 Low Gas Pressure SwitchS-2 High Gas Pressure SwitchRegulatory Agency RequirementsRaytherm® - Type HHydronic Heating BoilersCommercialModels 926-1758 (Outdoor)Fig. #8953

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