Document NYoOXQeM5dZYVv5g0zQDMYGb

Healing and Air Conditioning Systems The General Iron Works Company Cincinnati SALES AND SERVICE information from any fas company. DIRECT FACTORY REPRESENTATIVES in principal cities. Hot-Kold was the forerunner of many of the forced air-direct fired air conditioning systems. The first units, built and installed eight years ago are still giving their owners the kind of service that causes them to write us that " Mr. Blank wants a heating system like mine." Eight Years of intensive improvement and development work have improved the pro duct, brought out the best methods of installation, and built a sales and service organiza- ' tion comprising basically the more important Public Utility Companies of the country, rMost of these have a select list of approved local installers who are competent as regards both financial responsibility and physical equipment to undertake jobs of any size. We Considered this ground work necessary before it should be offered to the Architect and Engineer. You may now specify it freely for residences, schools, detached buildings of the long rambling type of architecture, industrial plants, and structures of a similar , character. HOT The Unit System is invariably used excepting in very small residences, grouping the rooms according to their usage, each group having its own thermostat. Hot-Kold is exactly what the name im plies, the Hot side consisting of a gas burning heat exchanger through which air is driven by a fan, and automatically controlled. The Kold side consists of a unit to fit, developed by engineers of The Frigidaire Corporation after years of tests. This is a simple section of heat exchanger surface and an automatically controlled refrigera tion compressor. This unit is sold and in stalled by the Frigidaire Corporation which maintains 24 hour a day service in all principal cities. KOLD 682 . The General Jron Works Co. Heating and Air Conditioning Systems 36%' UNIT STANDS ON FOUB l\i* ANGLE LEGS. NORMALLY HIGH, FACING OUTWARD AND 2' .6^'XI'IOM'O.D. FURNISHED WITH CAPS COVERING 4, R.H. THREAD, BANGER BODS ON 20XT an 30M' CENTERS, FOR' HANGING. BRIGHT TO TOP OF UNIT, 43X". TO CENTER OF 10* FAN INLET, S8}f0- ------------- ss'oa --- s'--- d_ % ' '' h<r -->___ ATQ' oyrc^T x> FAN HOUSING -27^ID- STO. A- *. Gas cock UNION 6U PfiESSUAE AGULATOA NIPPLE, tapped PLU66E0 fa' ' AIR OPEAATEO ' GAS VAtve > STATIC PAESSUAE pipe I a O-O- TUGtNE FROM PAN VALVE 1% 1 0 PLAN- MODEL B Gas input--90,000 B.t.u. hourly. Heat output--84,500 B.t.u. hourly. Weight, crated--1000 lbs. Dimensions -- actual working drawings herewith. Fan capacity. C.F.M.* Motor H.P.* Various fans and motors are furnished dependent on the duty of the unit. Generally, these are H H.P. constant speed with air deliveries up to 625 C.F.M. and Vi H.P. variable speed, with air de liveries from 600 to 865 C.F.M. Fans are always spring floated, direct connected, backward curve, multiblade type. Heater, filter, cooler and compressor are furnished as four independent units, to be located as desired, which permits best economy of space occupied. The Present Known Requirements of Perfect Air Conditioning AIR MOTION Overhead high velocity introduction toward cold wall provides thorough mixing with room air. This settles into the breathing zone and returns without objectionable draught to recirculation gnlles. HUMIDITY Water from fire, literally. Once set, the rate of-moisture addition will never vary. Total amount added depends on time of operation. CLEAN AIR Filter medium is the most efficient dry type. A woman can change it in five minutes. : . .. TEMPERATURE. Automatic dual speed absolutely eliminates the dsual time lag.' fA CONTROL : complete cure for "Cold 70." NO ODORS " .All welded construction. No leaks possible. Air is warmed by "... t passing.heating surfaces at such high velocity as to prevent scorching suspended matter. The Equipment Must Have These Characteristics . v LONG LIFE ECONOMY RELIABILITY, SIMPLICITY' SAFETY Heat exchanger section made of 16 ga. Chromium; (stain1ess) 'Stee1. Various estimates of corrosion rates set probable life'at 50 to 100 years. Unquestionably the most efficient vented gas unit made today. Two service calls from 100 units, winter 1929-30, Cincinnati. The complete absence of "trick gadgets" has been-favorably.com- mented upon by hundreds of engineers. .. Approved by A. G. A. Testing Laboratory, and in many ways, far improves upon the Laboratories requirements. . Most of the above features are covered by HOT-KOLD patents and patents-pending. " Model 2-B, a larger unit,..will be in production by January 1. Send for complete A. I. A. file which includes Specification and Data Sheets. 683 tt-.i