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Table 10. Technical Data for UBX and UBZ Models (Unit Sizes 150-400 <br /> Unit Size Unit of i <br /> Parameter 150 175 200 225 260 300 350 400 Measurement <br /> Input heating capacity 150,000 175,000 200,000 225,000 250,000 300,000 350,000 400,000 BTUh <br /> 43.9 51.2 58.6 65.9 73.2 87.8 102.5 117.1 kW <br /> Thermal efficiency 83 83 83 83 82 % <br /> 124,500 145,250 166,000 186,750 207,500 249,000 290,500 328,000 BTUh <br /> Output heating capacity1 36.4 42.5 48.6 54.7 60.8 72.9 85.1 1 96.0 kW <br /> Gas connection,natural2 1/2 1/2 3/4 3/4 314 <br /> Gas connection,pro ane2 1/2 1/2 314 3/4 3/4 <br /> Vent connection dlameter3 5 5 5 6 6 Inches <br /> Combustion air inlet diameter <br /> UBZ models 3 6 6 6 6 <br /> Control amps,24V 1.0 1.0 1.0 1.0 <br /> Full load amps,115V(U BX models) 5.9 9.6 10.5 12.7 12.7 17.7 27.3 <br /> Full load amps,115V(U BZ models) 5.9 6.3 10.5 12.7 12.7 17.7 1 27.3 <br /> Maximum overcurrent protection,115V Amps <br /> UBX models 4 15 20 25 30 30 40 60 <br /> Maximum overrcurrent protection,115V 15 25 30 30 40 60 <br /> UBZ models <br /> Discharge air temperature rise 45175 45175 45175 45/75 50180 T <br /> minimum/maximum) <br /> Minimum air volume 1537 1793 2049 2306 2562 3074 1 3586 4100 cfm <br /> 43,5 50.8 5810 65.3 72.5 87.0 101.5 116.1 Meter3/minute <br /> Maximum air volume 2562 2989 3416 3843 4270 5123 5977 6185 cfm <br /> 72.5 84.6 96.7 108.8 120.9 145.1 169.2 175.1 Meter3/minute <br /> Discharge air opening area 2.56 2.56 3.51 3.51 4.79 4.79 Foot224 <br /> 0.24 0.240.33 0.33 0.45 0.45 Materz <br /> Minimum output velocity 600 700 800 657 730 642 749 1 856 f m <br /> 183 213 244 200 223 196 228 261 Moter/minute <br /> Maximum output velocity 1001 1168 1334 1095 1217 1070 1248 1291 1 m <br /> 305 356 407 334 371 326 380 393 Meter/minute <br /> Standard blower motor size 1/4 1/2 1/2 314 3/4 1-1/2 2 Horsepower <br /> Blower fan size 12 x 12 12 x 12 15 x 11 15 x 11 15 x 15 Inches <br /> Sound level ® 15 feet 51 52 53 56 56 1 59 61 62 dba <br /> 1CSA ratings for elevations up to 2,000 feel. <br /> 2Size shown is for gas connection to a single-stage gas valve-not supply line size. <br /> 38maller and/or larger vent and combustion air pipe diameters may be permissible,Refer to appropriate venting Instructions lisled in Table 1. <br /> 4MOCp=2.25 x(largest motor FLA)+smallest motor FLA.Answer Is rounded to the next lower standard circuit breaker size. <br /> 1-UBX-UBZ-UDX-UDZ(04-21)1034344-0 13 <br />