Document ZBwoqdDZDjbjyy27zZkwd0pEO

. 108 Air Conditioning \ NATIONAL1 WARM " AIR SPACE HEATERS Sales representatives in principal eilies in U-S. and Canada SPACE HEATERS SERIES ITD The quality leader of the space heating industry. Teardrop-shaped "air foii" design heat exchanger for nmimnm efficiency. Styles and sizes to meet every installation requirement . . . vertical, horizontal or inverted. All units available with separate blower section for by-pass and multi-zone operation. Gas, oil or combustion fuel fired Stainless steel primary heat exchanger Aluminum coated secondary tube section Guaranteed 80% operating efficiency Low initial cost--quick, easy installation Universal application--floor or ceiling suspended Completely automatic--thermostatically operated Basic units UL and AGA approved * Assembled, wired, flame-tested before shipment Model (LTD 300, Style DH--Standard ap. right floor-aet unit with discharge heads. For complete engineering information, write for, form 550. Model Btu Output tCFMat 80*F. Rise Main Supply Fza DWDI Blower No. ft Size HP 1800 ttpm Induced Draft Fan HP Plenum Opening Dimensions WL tH TD-40 TD-50 TD-55 TD-65 TD-75 TD-80 TD-8S TD-100 TD-125 TD-150 TD-175 TD-200 TD-250 TD-300 TD-350 TD-400 400,000 500,000 550,000 650,000 750,000 800.000 850,000 1,000,000 1,250,000 1,500,000 1,750,000 2,000,000 2,500,000 3,000,000 3,500,000 4,000,000 5,325 6,680 7,350 8,650 10,000 10,650 11.300 13,300 16,700 19,900 23,300 26,700 33,200 39,900 46,500 53,400 2/15 2/15 2/15 3/15 3/15 3/15 2/18 2/18 2/21 2/21 3/21 3/21 3/21 3/24 3/24 3/24 1 IX 2 2 3 3 3 5 5 m 10 10 15 IS 20 25 X 18X60 32 83 81 1,400 X 18X60 32 83 81 1,500 X 18X60 32 83 81 1,550 X 18X80 32 103 81 1,750 X 18X80 32 103 81 1,900 X 18X80 - 32 103 81 1,990 X 18X80 48 104 87J 2,400 X 18X80 48 104 871 2,600 X 24X100 54 124 98j 3,200 X 24X100 54 124 981 3,450 X 24X100 54 124 981 3,750 X 20X120 60 146 981 4,300 X 30X120 60 146 981 4,600 1 30X160 60 186 103 6,630 1 30X160 60 186 103 6,720 1 30X160 60 186 103 6,910 * Tested and rated in accordance with the ASHRAE Standard No. 45-55, Code to Testing and Rating Heavy Duty Furnaces & Direct Fired Unit Heaters. . f Higher CFM ratings available on application. 1 Height--less discharge heads and extension. Specification Data Subject to change without Notice. NATIONAL SPACE HEATERS SERIES TOM A TDA National TDM aeries: Diamond shaped stainless steel heat exchanger with 4-pass combustion, induced draft. 200,000 to 3,500,000 BTlTs. Assembled, wired, flametested before shipment. (Write for form 600) National TDA series: Natural draft, 2-pass combustion. Diamond-shaped stain less steel beat exchanger. 200,000 to 750,000 BTU's. (Write for form 700) Sene* TD-M 300, Model DH--standard upright, floor-set unit with dis charge heads. Output B.TJJ. 80% TD-M 20 TD-M SO TD-M 40 TD-M 50 TD-M 75 TD-M 100 TD-M 125 TD-M 150 TD-M 17S TD-M 200 TD-M 250 TD-M 509 TD-M 550 TD-A 20 TD-A 25 TD-A 55 -TD-A 45 TD-A 65 TD-A 75 1,000, 1.750, 1.500, 21..705000,. 2.500, 5.009, 5.500,.000 200,000 250.000 550.000 450.000 650.000 750.000 3,460 3,705 4,920 6,140 9,250 12.500 15,400 18.500 21.500 5,550 8,000 9.250 tpaMatlaa Data 9ub)ae * Blowers (DWDI No. ft Size) 1/15 1/15 2/12 2/12 2/18 2/18 3/18 3/18 3/18 3/18 1I33/#711 3/21 18X40 18X40 18X56 18X56 18X80 18X80 24X100 24X100 30X106 30X106 30X152 50X152 30X152 35 56 83* 35 56 83)1 48 80 96 48 80 96 54 100 103)1 54 100 103*1 60 106 103)1 60 106 103)1 70 152 134 70 152 154 70 152 154 950 1,050 1.500 1.650 2,550 2,700 3.500 3.650 4,300 4.500 1/15 1/15 2/12 2/12 2/18 2/18 18X40 18X40 18X56 18X56 18X80 16X80 35 56 85)1 35 56 S3r 1.000 1.150 1.300 2,100 2.400 a 1955 by ASHRAE for Heavy Duty Furnaces sod Direct Fired i make up air OIRECT GAS-FIRED MAKEUP AIR UNITS for tempering, drying and humidity control The National Champion MA is a completely packaged unit for all njkeup air applications. Simple and inexpensive to install . . . Zaires no ducts and operate* independently of present heating -intern. The National Champion MA eliminates negative building pressures with pr'e-heated fresh air, and regulates air moisture for iccnrato humidity control. Also ideal for drying applications. Fully enclosed burner and control compartment for positive protection iftinst all elements. Available combustion efficiency 100% Weather-proof construction for inside or outside installation Flame turn-down ratio 25 to 1 Contamination-free, odorless combustion Full modulating air flow mixer Built-in electrical control panel , DWDI fans for static pressure operation . . . give quiet, smooth air movement. 7 sizes--26 models from 8,000 to 130,000 CFM. For complete engineering information write for form 552. NATIONAL REPLACEMENT AIR UNITS 8'tries RA * Direct, gas-fired makeup air- units with angle blower. Ideal replacement makeup *ir control for restaurants, laundries, commercial buildings and plants where . angle blower operations will resolve Katie conditions. Contamination-free, ' odorless combustion. DWDI fans provide hr static pressure operation and smooth sir movement. Fully enclosed burner and control cabinet for positive protection tgainst all elements. Full modulating air _ Bow mixer, 25 to 1 turn-down ratio. Three Ktes--28 models from 3,000 to 24,000 -0% Available combustion efficiency *100% with six discharge arrangements. %rFor complete engineering informs* write for form 554. Heater Model C.F.M. 70F. MA-S9 MA-tOO MA-130 MA-170 MA-175 MA-240 MA-270 MA-310 MA-320 MA-J60 MA-420 MA-4S0 MA-460 MA-S70 UA-640 MA-6S0 MA-<00 MA-SS0 MA-1040 MA-1110 - MA-U20 MA-1350 MA-1S0O 8,000 10,000 12,000 13,000 17,000 17,500 24,000 27,000 31,000 32,000 30,000 42,000 45,000 40.000 57,000 04,000 68,000 80,000 88,000 93,000 104,000 112,000 112,000 120,000 135,000 ISO,000 Blower D.W_Di Twin-15 Twin-15 Taria-18 Twin-18 Twin-21 Twin-21 Twin-21 Twin-27 Twin-27 Twtn-2? Twin-48 Twin-48 Std. HP F ESP. t STD. At @ 9Cor 45*F \H 1H 3 3 5 5 3 3 5 5 5 5 I# 7 10 10 ts 15 7 10 to IS 15 20 20 . 10 '--10 IS 15 20 20 15 15 20 ` 20 25 30 40 40 SO SO 25 25 30 30 40 40 50 50 99 to 3.5 45 to 1.5 90to3.5 45 to 1.5 90 to 3.5 45 to 1.5 90 to 3.5 45 to 1.5 90 to 3.S 45 to l.S 90 to 3.5 45 to l.S 90 to 3.5 45 to 1.5 90 to 3.5 45 to 1.5 90 to 3.5 45 to l.S 90 to 3.5 45 to 1.5 90 to 3.5 45 to l.S 90 to3.5 45 to l.S 90 to 3.5 45 to 1.5 90 to 3.5 45 to 1.5 90 U>3.5 45 to 1.5 90to3.5 45 to 1.5 90 to 3.5 . 4S to 1.5 90 to 3.5 45 to l.S 90 to 3.5 4S to 1.5 90 to 3.5 45 to 1.5 90 to 3.5 4S to 1.5 90 to 3.5 45 to 1.5 90 to 3.S 45 to l.S 90 to 3.5 45 to l.S 90 to 3.5 45 to l.S 90 to 3.5 45 to 1.5 BTU/UR @ Ar BTU/HR (Minimum) @ Ar 789,000 395,000 986,000 493,000 1,184,000 592,000 1,282,000 041,000 1,677,000 838,000 1,726,000 863,000 2,367,000 1,184,000 2,663,000 1,332,000 3.058.000 1,529,000 3.156.000 1,578,000 3.551,000 1,776,000 4.147.000 2,071,000 4.439.000 2,219,000 4.537.000 2,269,000 5,622,000 2,811,000 6.313.000 3,156,000 6.708.000 - 3.354.000 7,891,000 3,946,000 8.680,000 4,340,000 9,174,000 4,587,000 10,259,000 5.129,000 10,948,000 5,474,000 11,048,000 5,524,000 - 11.837,000 5,918,000 13.316.000 6,658,000 14.796,000 7,398,000 31,500 15,800 39,400 19,700 45.300 23,600 51,200 25,600 67,000 33,500 69,000 34,500 94,600 47,300 106,500 53,200 122.300 61,(00 126,200 63,100 142,000 71,000 165,800 82,800 177,500 88,700 181,400 90,700 224,800 112,400 252,500 126,200 268,500 134,100 315.600 151,800 347,200 173.600 366,900 183,400 410,300 205,100 437,900 218,900 441.900 220,900 473,400 236,700 532,600 266,300 S91.800 295,900 9p*dCilln Data nfcjwt to wltboot netlaa. * Available to 1" W-C.B-S- Pnou* aa 11 1 on foqoaat at f AT RJm option available from t$'F to 1*0*F---Ulgbar aa itnaoL f 8*F. Shaping Weight 1,644 1,529 1,737 1.598 1,746 1,607 1,938 1,798 1,977 1,834 2,798 2.654 2,943 2,764 3,039 2,846 3.061 2.86J 4,691 4,494 4,757 4.S5S 4,831. 4.594 4,949 4.719 5,618 5,381 5,734 5.456 5,848 5,566 8,161 7,877 8,337 8,029 8,401 8,OSS 8,761 8,441 8,897--'' 8,562 9,02S 8,682 11,876 11,533 12,244 11,893 12,380 12,013 12,758 . 12,390