Rite 15 psi low pressure atmospheric brochure - California Boiler

15 PSI LOW PRESSURE STEAM BOILERS /ATMOSPHERIC NATURAL GASFIRED SPECIFICATION & ORDER FORMBoiler CapacityThe Boiler shall be a Rite Model______Low PressureSteam boiler with a capacity of _____MBH input and anominal output of _____MBH (_____Boiler Horsepower).Pressure VesselThe boiler shall be ASME Section IV stamped for 15 PSIGand registered with the National Board. It shall be of theinclined water tube design with 2” non-proprietary straightsteel tubes (SA 178 Grade A, 13 Gauge) rolled between twoheaders (steel drums). Headers shall be free to expand andcontract (no stay bolts shall be used) in order to reducestresses caused bythermal shock.Headers (Steam Drums)Both headers shallincorporate bolted-andgasketedremovablehead-plates that willcompletely expose allwaterside surfaces forinspection and cleaningwhen opened. Headerflanges shall have drilledand tapped smoothsurfaces for easy gasketclean-up and flange maintenance.Flange weldedstuds shall not be used.Steam QualityHigh steam quality - at ornear 99% at the outletnozzle – shall be attainedby passing wet saturatedsteam through a final passof superheated dryingtubes.Steam TrimStandard steam trim shallinclude pop safety valve(s)set for 15 PSI and aseparate steam columnwith blowdown valve,Rite manufactures a complete lineof condensate return feedwatersystems and blowdown tankscompatible with Rite Steam Boilerstrycock, gauge glass and probes for feedwater pump controland a secondary (manual reset) low water cutoff. Controlsmounted in siphon loop piping on the side of the boiler shallinclude a high limit, operator and a 0 – 30 PSI pressure gauge.A probe mounted into the front header drum shall function asthe primary (auto reset) low water cutoff. A NEMA 1 hingedpanel on the side of the boiler shall house the pump controlsand both low water cutoff relays. It shall have flush mountedpush buttons to test and reset the secondary low water cutoff.The panel shall be labeled and have a complete wiringdiagram of its components mounted inside the cover.Listings/ApprovalsIn addition to the ASME & National Board Certifications, theboiler shall be UL Listed (ULC in Canada) and meet the latestrequirements of CSD-1.Stack RequirementsThe boiler shall be recognized as Category 1 applianceand UL Listed for use with Type B Gas Vent. Models 48 S– 120 S shall be supplied with a draft hood. Models 135 S– 1250 S shall be supplied with barometric damper(s).Models supplied with barometric dampers shall have adraft gauge installed near the controls with the proper draftrange shown in inches water column.BurnerThe burner system shall consist of heavy-duty drilled portcast iron burners mounted on venturis and brass orificeswith fixed openings. It shall have no air-fuel linkages orblower motor and only minor adjustments of the gaspressure regulator(s) shall be required for burner tune-ups.A spark ignited pilot burner using flame rectification shalllight off the main burners. Access to the burner bed shallbe through a removable firebox door with a built-in flameviewpoint.Flame SafeguardStandard Flame Safeguard shall beeither Fireye Micro M or HoneywellRM 7800 Series – both with integralE-PROM memory chip and capableof incorporating a message center.Main flame shall be supervisedwhen inputs are over 2500 MBH.Gas TrainThe gas train shall be completelypiped and wired with a minimum oftwo main safety gas shutoff valveswired in series. It shall also includea main and pilot gas pressureregulator, each suitable to handlethe specified maximum supply gaspressure. Valve leak test cocksshall be provided. High and lowgas pressure switches shall beprovided for inputs over 2500 MBH.A motorized main safety shutoffvalve with proof of closure shall beprovided for inputs over 5000 MBH.ElectricalA 120/60/1 8 amp supply is required for boiler–burnercircuit. A separate supply may be required to operate theboiler feed pump.OptionsThe following options shall also be required:______Hinged Headplates (front & rear)______Insulated Headplates (front & rear)______3 X 4 Handholes (front & rear)______Factory Mutual approvals______Industrial Risk Insured approvals______Other (See corresponding Pink Price List B formore options)__________________________________________________________________________________________________________________________________________Rev. 3/2007