Catalog No.: 2000.461A Effective: 07-21-10 Replaces: 9-15-07Job:Engineer:Contractor:Prepared By: Date:Model: Indoor/Outdoor: MBTUH Input:100% Factory Fire TestedEfficiency: 84%Maximum Outlet Temperature: 230°FMinimum Non-Condensing Inlet Temperature: 105°FThermal Shock Proof Heat ExchangerLimited Twenty-Year Thermal Shock WarrantyLimited Ten-Year Closed-System Heat ExchangerWarrantyPolyTuf Powder Coated CabinetNo Combustible Floor Shield RequiredFan-AssistedPatented Burner Security BlanketHeat Exchanger H Stamp HeadersGlass-Lined Cast Iron – StandardBronze – Option A-1 ASME Inspected and Stamped160 PSIG Working Pressure National Board Approved Fin TubingCopper – StandardCupro Nickel – Option A-3 ASME Steel Tube Sheet Silicone High Temp O-Rings Pressure Relief Valve, ASME45 PSIG – Standard on Model 399B60 PSIG – Standard on Models499B-899BPSIG – Optional Temperature and Pressure Gauge Water ConnectionsLeft – StandardRight – Option A-6Controls 120V, 60Hz, 1 Phase Power Supply 120/24V 60Hz Transformer 100% Shut-Off/Lockout Hot Surface Ignition Remote Flame Sensor High Limit Control, Manual Reset On/Off Power Switch Manual Shut-Off, Front-Mounted Switch Flow Switch Blocked Vent Pressure Switch Combustion Air Proving Switch Pump Time Delay Relay Status Display LightsGas Train Manual Gas Shut-Off Valve(s) Combination Valves Firing ModeOn/Off: Model 399B2-Stage: Models499B-899B FuelNatural GasPropane Gas Design Certified - ANSIZ21.13/CSA 4.9Burner Ultra-Low NOx: Less than20 PPMConstruction Indoor/Outdoor Construction Enclosed Front ControlsVenting Vent LocationTop, Outdoor – StandardTop, Indoor – Option D-20Rear – Option D-14 Vent Termination CapOutdoor D-11Indoor, Horizontal D-15Indoor, Vertical (by others) Extractor – OptionalBy othersNot requiredTemperature ControlsB-2 Tankstat, Single-Stage(100-200°F)B-3 Tankstat, 2-Stage (100-200°F)B-6 Aquastat, 2-Stage (100-200°F)B-__ TempTracker Digital Controller,2-Stage (Loose)B-__ TempTracker Digital Controller,4-Stage (Loose)OptionsC-6 Ignition Module, Manual ResetF-10 Low Water Cut-Off, Remote ProbeI-1 High Limit Control, Auto ResetP- Pump: HP, 120V, 1∅, 60HzWater Hardness: GPGCast Iron BronzeMounted LooseFront RearP-26 Cold Water Start (See 2000.48)S-1 Low Gas Pressure Switch, ManualS-2 High Gas Pressure Switch,ManualX-1 SureRack™ KitX-2 SureRack Add-onRegulatory Agency RequirementsDelta Limited™ - Type HSpace Heating/Hot Water BoilersModels 399B-899BShown with outdoorair inlet and pump coversProudly Made in the U.S.ADelta Limited models not approved for use in California