TEMPERATURE REGULATION 



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 TKMI'KUATl ItK INIKOKMI.Y 'IX 

 TIIK HUNT DKSIHKD 



IN connection with the heating plant for the 

 Singer Building, a system of automatic heat 

 regulation has been installed throughout. 



In every room a thermostat is conveniently 

 located which controls the heat sources in the room 

 by operating the valve on the steam supply of the 

 radiator or radiators. The Johnson System of Auto- 

 matic Heat Regulation was installed in the old Singer 

 Building and later in the Bourne Building, and the 

 same system has been adopted and installed by the 

 Johnson Service Co. of Nos. 36 and 38 East Twen- 

 tieth Street, New York, throughout the different sec- 

 tions of the completed Singer Building. 



Hy this system the temperature is kept uniform 

 during the season in which artificial heat is required, 

 and the different rooms can be kept at different 

 temperatures to suit the desire and convenience of the 

 occupants. 



Compn-ssed air is the motive power that oper- 

 ates, through the action of thermostats, the steam 

 valves on the radiators; the air is generated by 2 

 air compressors in the basement and is distributed 



[04 



by means of a network of piping to the different 

 thermostats, and from these to the steam radiator 

 valves. For this purpose about 120,000 feet of 

 galvanized iron pipe of different si/.es was used. 



Nearly 1,200 thermostats are installed, and do 

 their silent but efficient work for health, comfort and 

 economy, operating more than 1,800 valves. 



The valves on the skylight coils are operated by 

 means of pneumatic push buttons. 



The air used for this system is taken from tin- 

 outside, compressed, then cooled and stored in tanks 

 located in convenient cold places, and from there 

 passes through the mains, risers and connections 

 throughout the entire immense structure. 



The advantage of temperature regulation is 

 forcibly presented when it is taken into consideration 

 that radiating surfaces must of necessity be of suffi- 

 cient capacity to meet the requirements of the cold- 

 est weather, which occurs at short intervals during 

 the winter season, and as a consequence it must 

 follow that overheating will result unless the heating 

 surfaces are thermostatically controlled. 



