Crown Boiler Series 24 Commercial Boilers - LSKair
Crown Boiler Series 24 Commercial Boilers - LSKair
Crown Boiler Series 24 Commercial Boilers - LSKair
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<strong>Commercial</strong> Hot Water or Steam <strong>Boiler</strong>Burner Mounting Plates and Adapter PlatesBECKETT (“CF” SERIES) BURNER ADAPTER PLATEI.D. ‘A’ ‘B’ ‘C’BOILER MODEL PART NO. NO. DIA. DIA. REF.<strong>24</strong>-03 THRU <strong>24</strong>-05 330400 920 4-3/4 10 7-1/16<strong>24</strong>-06 THRU <strong>24</strong>-08 330401 921 6-1/8 10 7-1/16<strong>24</strong>-09 THRU <strong>24</strong>-12 330402 922 6-3/4 10 7-1/16BECKETT (“CG” SERIES) BURNER ADAPTER PLATEI.D. ‘A’ ‘B’ ‘C’BOILER MODEL PART NO. NO. DIA. DIA. REF.<strong>24</strong>-03 THRU <strong>24</strong>-06 330400 920 4-3/4 10 7-1/16<strong>24</strong>-07 THRU <strong>24</strong>-08 330401 921 6-1/8 10 7-1/16<strong>24</strong>-09 THRU <strong>24</strong>-11 330403 923 7-1/4 10 7-1/16<strong>24</strong>-12 330404 9<strong>24</strong> 8-1/8 10 7-1/16Note:1. A burner adapter plate is needed for each boiler.‘B’ DIABOLT CIRCLE‘C’(REF)Control TappingsTAPPING SIZELOCATION (IN.) STEAM BOILER WATER BOILERA 4 Supply SupplyB 4Plug (<strong>24</strong>-03 thru <strong>24</strong>-06)Supply (<strong>24</strong>-07 thru <strong>24</strong>-12)PlugC 3 Blow-Off Valve ReturnD 3 ReturnPlug (<strong>24</strong>-03 thru <strong>24</strong>-11)Return (<strong>24</strong>-12)E 3 Plug Blow-Off / Drain ValveF 3 Plug PlugG 1-1/2 Safety Valve / Surface Skim Tap Relief ValveJ1 1 Plug PlugJ2 1 Float L.W.C.O. PlugK 3/4 Plug Probe L.W.C.O.M 3/4 Operating Pressure Limit Control Operating Temperature Limit ControlN 3/4Hi PressureHi TemperatureLimit Control / Manual Reset Limit Control/Manual ResetP 1/2 Gauge Glass/#67 L.W.C.O. PlugQ 1/2 Steam Gauge (Bush to 1/4”)Temperature/PressureGauge (Bush to 1/4”)S 3/4 Tankless Heater Control Tankless Heater ControlT 3/4 Firing Rate Pressure Control Firing Rate Temperature Control4 8J1AJ2B‘A’ DIAHOLEPTIDENTIFICATION NUMBERSTANDARD BURNERADAPTER PLATE4” STANDARD8” EXTENDEDFRONT VIEWSIDE VIEWSCAST IRON BURNER MOUNTING PLATESNSPJ1QMKJ2G<strong>Series</strong> <strong>24</strong> Minimum PipingRecommendations – Water <strong>Boiler</strong>Impact of System Piping – Many hot water systemsare zoned. Some also use mixing valves to control the watertemperature in the system. These features can cause theflow through the boiler to vary dramatically, depending onthe status of the zones or mixing valves. In addition, thelarge water content of many commercial systems has thepotential to subject the boiler to operation with low returntemperatures for an extended period of time. These factorscan shorten the life of a boiler due to thermal shock or fluegas condensation.<strong>Crown</strong>’s 3 Recommendations – On the followingpages, CROWN provides three basic recommendationsfor near-boiler piping that are intended to maximize thelife expectancy of the boiler by protecting it from flue gascondensation and thermal shock. Each protects the boilerby making sure that both of the following conditions are met:■ The flow through the boiler is high enough toensure a temperature rise of less than 40°FFFRONT VIEWEBACK VIEW■ The return temperature does not fall below 135°Ffor an extended period of time.RTC Return Temperature Control – PipingRecommendation 3 makes use of CROWN’s optionalRTC (Return Temperature Control). This control provides aneconomical and effective way of protecting the boiler fromthermal shock and condensation. It can be incorporated intomost hot water systems with minimal modifications to thesystem design and operation. When this option is used onmultiple <strong>Series</strong> <strong>24</strong>s, one RTC is required for each boiler.The CROWN RTC is also available with an outdoor resetoption. This provides additional energy savings bymodulating system water temperature to match thebuilding load requirements.DC