Executive Committee W.

Heating Ventilating Air Conditioning Guide 1939 18 19 T able 6.

HEAxmo Ventilating Air Conditioning Guide 1939 iii 3 i i i i i j c* II lI ooo M CO od O U si.

Heating Ventilating Air Conditioning Guide 1939 A*'system equipped with such valves builds up a vacuum and holds the heat 1oq With proper controls on the boiler, lower radiator temperatures can be maintained^* mild weather, giving better plant efficiency. ** 12 # What are the essentials of a two-pipe closed vapor system?

Heating Ventilating Air Conditioning Guide 1939 HANGERS AND SUPPORTS Heating system piping requires careful and substantial support.

Heating Ventilating Air Conditioning Guide 1939 2 Is it satisfactory to install one unit heater as the total load on a cai fired boiler?

Heating Ventilating Air Conditioning Guide 1939 resistance of individual water circuits is generally sufficient to effect a satisfactory distribution.

Heating Ventilating Air Conditioning Guide 1939 Table 1.

Heating Ventilating Air Conditioning Guide 1939 The instrument is essentially an alcohol thermometer with a bulb approximately 54 in- in diameter and x/i in. long with a stem 8 in. long reading from 100 F to 95 F, graduated to tenths of a degree.

itLToAJ Bernard J.

194 CHAPTER 11 \ IOASt J l *4 W - ` Number of Caro Table 1.

Table 1.

Air Hygiene Foundation of America, Inc 4400 Fifth Avenue, Pittsburgh, Fa March 23, 1939 REFERENCES TO RECENT LITERATURE ON INDUSTRIAL DISEASES (A) New3 Items 165 OCCUPATION AND HEALTH, Supplement.

AIR HYGIENE FOUNDATION OF AMERICA, Inc.

even harmful.