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134 Air System Equipment Unit Beaters;, ILG ELECTRIC VENTILATING COMPANY 2880 N. Pulaski Road Chicago 41, Illinois Offices in 57 Principal Cities Member of Air Moving and Conditioning Association, Inc. (AMCA) ILG UNIT HEATERS--STEAM, HOT WATER, ELECTRIC OR GAS Tested and rated by IUHA and ASHVE Codes. "One-Namc-Plate" guarantee. ALL-ELECTRIC UNIT HEATERS ILG ALL-ELECTRIC UNIT HEATERS--new design for IH to 36 kw. features black heat type steel-sheathed elements and Ilg's quiet Type "Q" fan wheel. Built-in thermal cutout and direct-connected, totally enclosed motors. Heavy-duty construction throughout for heat- ing isolated areas, temporary or auxiliary heating, stand-by freeze prevention, etc. Send for Bulletin 808. STEAM AND HOT WATER UNIT HEATERS ILG VERTICAL-TYPE UNIT HEATERS--new de sign. Totally enclosed ball-bearing motors. Heating surface features similar to horizontal type. Type "V" for standard outlet temperatures, Type "VL" for low outlet temperatures. 15 capacity sues. Send for Bul letin ISOS. CABINET HEATERS ILG HORIZONTAL-TYPE UNIT HEATERS--four side pipe connections for simplified piping. Suitable for hot water and steam to 150 lb pressure... tubes air-tested to 90 lb. Motor totally enclosed, continuousduty type. 19 capacity sizes. Send for Bulletin JSOS. GAS-FIRED UNIT HEATERS Air Conditioning Halt Hnlcn 4 CmIh* 135 D. I. MURRAY MANUFACTURING CO. WAUSAU WIS. Offices IN PHINC1PAI CITIES MANUFACTURERS OF GRID CAST IRON UNIT HEATERS, BLAST HEATERS, RADIATORS. CfiWWM, in HEATING EQUIPMENT WHEN YO U INSTALL---------- CAST IRON STEAM HEAT GRID TRANSFER SURFACE You once and for all eliminate internal electrolytic corrosion because all metals in GRID Cast Iron Steam Heat Transfer Surface that are in contact with steam are similar . . . not 2 or 3 different metals that promote corrosion to cause leaks and breakdowns. GRID Cast Iron Steam Heat Transfer Surface also largely eliminates external corrosion because its cast iron construction resists acids or fumes in the air. When corrosion in heat transfer equipment ends, high maintenance ends *. . . it's as simple as that, no mystery, no magic, no "sales" talk. Your heating problems are no longer problems . . - you do away with high maintenance costs, repair work ana the nuisance of leaky heating equipment. GRID Cast Iron construction is designed to withstand steam pressures up to 250 p.s.i. . . . 450 deg temperature eliminating the use of reducing valves where high steam pressures are used. GRID Cost Iron Steam Heat Transfer Surface largely does away with replacement costs because GRID is built to last for years . . . operating successfully without maintenance in many plants since 1929. Sounds worth looking into? Then get the complete story today . . . come the heating season, you will be glad you did. GRID HORIZONTAL BLOW UNIT HEATER DATA 29 YEARS MAINTENANCE-FREE Unit Heater Model ^Casiajj; Center Width Height Over all Height Center Hanger Rod Motor Hp Rptn Capacities at 2 PSIG Steam Pipe Size 60* F Eat. Air VoL Fan Cfm Btu Per Sup Re Hr S ply turn *gg- Wt. Dim. Lb*. SERVICE ON ALL TYPES OF GRID EQUIPMENT CMOQO CI-1200 CI-1S0O CI-1530 nCl-2000 nCl-2025 CI-2S04 Cl-2900 CI-2530 Cl-3000 CI4000 13H 15K 1155 ton ton tzsui tsU 30H son 15f 1S*W 16 11 11 15 16 26 31 31 31 15H. u18nH 2SH 29 34 S3*5mHi JS55 11 15 17K 17H 22H 2273n* 17H 27* 32* S3* it* 1550 570 17720 103 M* 1700 800 43320 109 lni 1750 1500 1750 1700 73000 104 96730 112 1150 2600 134000 107 n 1150 1875 163900 112 55 1150 330P 196000 1U 1150 4350 213500 104 Kn 1150 4650 263830 111 850 6900 305000 107 m 1150 3000 362000 101 m 1mM m 2 2 2 1 2 JH 212 IK IK IK IK m m IK IK IK 1H 1H H * M K K ** H * 150 210 280 390 490 520 880 700 900 1020 1070 ILG SERIES "A" CABINET HEATERS--designed for mg.Timiim flexibility of arrangement and operation. Can be furnished for'floor, wall, ceiling or inverted mounting. Available in seven basic unit sizes, 35 models. Blow-through type with direct fan assembly and drawthrough type with belt-drive assembly. Equally suitable for steam or hot water applications. Send for Bulletin 1806.- ILG GAS-FIRED UNIT HEATERS--use natural, manufactured, mixed, butane-air mixtures; propane, or butane gas. Available in 10 basic model sizes, 2 types: Propeller Type (Series M); or Blower Type (Series MB) for use with duct work. Safety pilot, auto matic control valve, electric limit switch. Motor has thermal overload protection. Send for Bulletin S86. Grid Blast Heaters in Fan Assembly A rugged, strong, and economical heat transfer surface, GRID Biastneaters are designed for the tough job . . . for low and high steam pressures . . . require less labor for installation, -less cubical space, and being designed and made the same as GRID Unit Heaters are resistant to corrosive atmospheres . . . definitely proved for yearn of service and maintenance-free. Grid Cast Iron Radiator Can be furnished with protective grill Designed for the tough applications in conjunction with high steam pressure systems, GRID Radiators eliminate the use of pressure reducing valves and because they are built with the same heating sections as GRID Unit Heaters, they will with stand steam pressures up to 250 psi - . . and wide fin spacing prevents collection of dust and dirt . . . particularly adaptable lor factory, shop offices, store rooms, laboratories, etc.... any lace where smaller heating capacities than required of a unit eater are needed.