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Air Conditioning Unit Heaters and Coolers Heating* Air Conditioning-Refrigeration 1602 Broadway, N. E., Minneapolis 13, Minn. Sales Offices in Principal Cities 54 Tube CoH Yi in. Tube CoU 54 in. Tube Coil McQTJAY RIPPLE-FIN COILS McQuay now makes the famous Ripple Fin coils in three tube diameters, ^ in., in. and % in., in a wide variety of styles and sizes; for steam, hot water, cold water, direct expansion and re frigerant condensing. "Custom Engineered" coils are readily obtained as McQuay's manufacturing methods provide a wide variety of fin spacings, fin heights, finned lengths, rows deep, and circuiting; thereby both space and capacity requirements can be met. Ripple-Fin coils have all tubes me chanically pressure bonded into the wide smooth fin collars providing a permanent bond and high heat transfer efficiency. McQuay coils are pneumati cally tested under water at 300 psig. Ripple-Fin coils have a staggered tube pattern which combined with the ripple fin produces a turbulent air flow and reduces air "by-pass." In addition to the ripples across the air flow the fins of McQuay coils have rippled edges to give strength and a pleasing appearance. McQuay Evaporators and Condensers are dried to minus 40F dew point to as sure moisture free coils. McQuay Ripple Fin coils have been approved by Underwriters* Laboratories for use as evaporators or condensers with either "Freon 12" or "Freon 22." 102 McQuay, Inc. Air Conditioning SacSta?' HORIZONTAL AND DOWNFLOW UNIT HEATERS Standard and high cfm models for either steam or hot water .available in both types. All Downflow units are furnished with adjustable radial diffusers as stand ard. Write for Catalogs $22 and 762. CABINET UNIT HEATERS . --j . Three types--floor, wall and ceiling--all Down Flow Unit Heater for exposed, semi-recessed or fully re' cessed mounting. Four sizes--310 to 15001 Hu or.wn,M,Un,t Heater c^^rn^> 11^ to 450wErfDteRf.mSuBituaUbeletinfoSrSs0t.eam f1 HEATING AND VENTILATING UNITS Horizontal, vertical, wall and inverted types. Covers the entire range from 1280 cfm and 26,000 Btu to 48,000 cfm and 3,320,000 Btu. Filters, face and by pass dampers, mixing boxes, humidifiers, discharge plenums, and nozzles are available. Write for Catalog 344- Cabinet Unit Heater AIRCONS Residential and commercial--11 sizes of belt and direct drive commercial models from 2 to 50 ton. Split circuiting and H,,--.rn(.n,Xy,,V.nhfa1,n,wmiondteelr8_cFoonutrrolceanvtariifluabglael foann cboemltmderirvceianl residential models--2 to 7J4 ton. Write for Bulletin 636 and SED-6-R. SEASONMASTERS (Central Station Air Conditioner) Horizontal and vertical types. Cools, dehumidifies, filters, and circulates air in summer; heats, humidifies, filters, and Belt-Drive Aircon circulates air in winter. Direct expansion and water cooling coils--steam and water heating coils. Cooling capacities from 1 to 100 tons, cfm from 640 to 29,000 in both suspended and floor type. Write for Catalog BOB. SEASONMAKERS (For Multi-Room Buildings) Room air conditioner, four types: floor, (Ceiling Type) Wdeawav, basic, and ceiling Cooling " and heating medium supplied from cen tral plant. Cools, dehumidifies, and filters in summer; heats and filters in winter. Four sizes of all models: 200, 300, 400, and 600 cfm. 800, 1200 and 2000 cfm hide-away and ceiling models also avail able. The Seasonmaker's compactness, attractiveness, quiet operation, and ease of installation make it ideal for hotels, apartment buildings, hospitals, motels, etc. Write for Bulletins 705 and 720. Seasonmaster Air Conditioner ( Year-Round) sUonnu,le, Type) "MC" MULTI-ZONE UNIT One unit simultaneously heats and cools up to 22 zones. Ten sizes in horizontal or vertical models with capacities from 1350 cfm to 29,000 cfm. Write for Bulletin 650. 103 "MC*' Multi-Zone Unit