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Z UNIT HEATER TECHNOLOGY <br /> HOW IT WORKS <br /> Diagram shows the air flow patterns for <br /> Model UEZ. Thin arrows show air flowI <br /> from combustion air intake, across the , <br /> burner, through primary and secondary <br /> heat exchangers and out exhaust vent. <br /> Larger arrows show air flow across the <br /> heat exchanger to provide heat to <br /> the space. \ _ <br /> UEZ TECHNICAL DATA <br /> Size I 180 260 310 <br /> Input Heating Capacity BTUH 131,000 175,000 260,000 305,000 <br /> KW/H 38.4 51.2 76.1 89.3 <br /> Thermal Efficiency 93% 91% 92% 91% <br /> Output Heating Capacity <br /> BTUH 121,830 159,250 239,200 277,550 <br /> � <br /> KW/H 35.7 46.6 70.0 81.3 <br /> Gas Connection(Inches)0 Natural 1/2 1/2 3/4 3/4 <br /> Propane 1/2 1/2 3/4 3/4 <br /> Vent Connection Diameter(inches) 4 4 4 4 <br /> Combustion Air Inlet Diameter(inches) 6 6 6 6 <br /> Control Amps(24-Volt) 1.0 1.0 1.0 1.0 <br /> Full-Load Amps(115V) 6.3 6.3 10 10 <br /> Maximum Over Current Protection(115V)E 15 15 20 20 <br /> Normal Power Consumption(watts) 657 657 1020 1020 <br /> Discharge Air Temperature Rise(°F) 50 160 50 60 <br /> Air Volume CFM 2256 2458 4430 4283 <br /> M3/minute 63.9 69.6 125.4 121.3 <br /> Discharge Air Opening Area(Ft.2) 2.56 2.56 4.79 4.79 <br /> Outlet Velocity FPM 883 962 924 894 <br /> M/minute 269 293 282 272 <br /> Fan Motor HP F Standard 1/4 1/4 1/2 1/2 <br /> Optional Enclosed 1/4 1/4 1/2 1/2 <br /> Fan Motor RPM 1050 1050 1050 1050 <br /> Fan Diameter(inches) 18 18 24 24 <br /> Approximate Condensate Per Hour gallons 1 1 2 2 <br /> liters 3.8 3.8 7.6 7.6 <br /> Approximate Net Weight lbs 242 262 380 427 <br /> kg 110 119 172 194 <br /> Approximate Ship Weight lbs 267 287 405 452 <br /> kg 121 130 184 205 <br /> C Output capacities shown are for units installed at elevations up to 2,000 ft.(600M). <br /> D Sizes shown are for gas connection to a single-stage gas valve,not gas supply line size. <br /> E MOP=2.25 x largest motor FLA+remaining load.Answer is rounded down to the next size of commercially available circuit breaker or fuse. <br /> F All other information in this table is based on a heater equipped with standard 115 Volt open fan motor. <br /> REZNOR® <br /> Unit Heater Catalog • Page 6 <br />