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Instructions Roberts Gorden, Modèle Combat AT-254

Fabricant : Roberts Gorden
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• All dimensions are subject to change without notice. • Due to height of unit, additional support is recommended on top of the unit. • Dimension "F" is flue diameter. Flue located on left side of unit for 1,000 MBH heat exchanger and smaller; flue located on right side of unit for 1,250 MBH heat exchanger and larger. • Dimensions "D" and "F" may vary depending on heat exchanger size (ex. 45 = 450 MBH heat exchanger). 5 AT-Series Estimated Shipping Weights ESTIMATED SHIPPING WEIGHTS - BURNERS (ALL MODELS) GAS BURNER Input MBH 300 - 625 626 - 938 939 - 1250 1251 - 1875 1876 - 2500 2501 - 3125 3126 - 5000 Weight 155 190 230 290 300 340 340 #2 OIL BURNER Input GPH 2.5 - 4.5 4.6 - 6.7 6.8 - 8.9 9.0 - 13.4 13.5 - 17.9 18 - 22 22.1 - 36 Weight 125 125 220 220 310 360 385 COMBINATION GAS / #2 OIL BURNER Input MBH 300 - 625 626 - 938 939 - 1250 1251 - 1875 1876 - 2500 2501 - 3125 3126 - 5000 Input GPH 2.5 - 4.5 4.6 - 6.7 6.8 - 8.9 9.0 - 13.4 13.5 - 17.9 18 - 22 22.1 - 36 Weight 200 240 270 360 400 450 500 IMPORTANT NOTES: • All weights are in pounds. • All weights are subject to change without notice. • To determine total unit weight, add the appropriate burner weight to the appropriate base unit weight (as listed in performance information tables). AT-Series Selection Guide To create a complete air turnover unit, choose one base unit and one burner/manifold package using the tables on the following pages. Prices apply for natural gas or LPG units. 1. Choosing A Base Unit Package Base Unit Package choice is based on model choice. First locate the correct set of tables on the following pages which corresponds to the required type of unit. Locate CFM and MBH requirements on the appropriate set of tables to determine the unit model. If more than one model is applicable, choose the smaller model. Btu/h Output Required = CFM * 1.08 * Temperature Rise MBH = Btu/h / 1,000 2. Choosing A Burner/Manifold Package Choose Burner/Manifold Package based on input, burner type and insurance requirements. Choose a Burner/Manifold Package that can fulfill the maximum output of the model. Note that burner INPUTS are listed rather than outputs. Burner Input = Burner Output / .8 Tables A: Air Turnover Heating Unit Performance Information (Additional configurations are available upon request.) AT-248 CFM Motor (HP) Output (MBH) Minimum Output (MBH) Maximum Temp. Rise Range (°F) Base Unit Weight (lbs.) 22,000 3 (2 motors) 240 750 10 to 32 5,990 35,000 5 (2 motors) 520 1,000 14 to 26 6,145 45,000 5 (2 motors) 560 1,250 12 to 26 6,270 45,000 5 (2 motors) 560 1,500 12 to 31 6,270 AT-136 CFM Motor (HP) Output (MBH) Minimum Output (MBH) Maximum Temp. Rise Range (°F) Base Unit Weight (lbs.) 4,500 1 (1 motor) 240 450 49 to 93 2,225 9,000 2 (1 motor) 240 450 25 to 46 2,280 12,000 3 (1 motor) 240 450 19 to 35 2,305 AT-148 CFM Motor (HP) Output (MBH) Minimum Output (MBH) Maximum Temp. Rise Range (°F) Base Unit Weight (lbs.) 10,000 3 (1 motor) 240 450 22 to 42 3,255 16,000 3 (1 motor) 240...