HEATINC VENTILATINO AIR CONDITIONING GUIDE 1941 Steam for heating domestic hot water should be taken from the boiler header back of the control valve so that pressures sufficiently high for heating the water may be maintained on the heater.

HEATING VENTILATING AIR CONDITIONING GUIDE 1941 will interfere with their operation.

HEATING VENTILATING AIR CONDITIONING GUIDE 1941 Temperature GENERAL RULES FOR DRYING '> .

HEATING VENTILATING AIR CONDITIONING GUIDE 1941 The following formula may be used for calculating the quantity of air forced through ventilation openings by the wind, or for determining the proper size of such openings: Q = EA V (1) where Q = air flow, cubic feet per minute.

HEATING VENTILATING AIR CONDITIONING GUIDE 1942 accomplishes the desired reduction in temperature differentials and assures maximum comfort in the living zone.

HEATINC VENTILATING AIR CONDITIONING GUIDE 1942 therefore, V = 1096.5 (1) where V = velocity, feet per minute. hv = velocity head or pressure, inches of water. d = weight of air, pounds per cubic foot.

HEATING VENTILATING AIR CONDITIONING GUIDE 1942 at other values of tip speed, total pressure, and size may be approximated by the following relationships. 1.

HEATING VENTILATING AIR CONDITIONING GUIDE 1942 mostat must be removed, or protected from damage, in sub-freezing weather.

HEATINC VENTILATING AIR CONDITIONING GUIDE 1942 air.

HEATINC VENTILATING AIR CONDITIONING GUIDE 1942 Fig. 2.

HEATING VENTILATING AIR CONDITIONING GUIDE 1942 TUBING, Capper Carbondale Div., Worthington VALVES, Check American Brass Company._ 10881089 Wolverine Tube Company, 1090 Pump & Machinery Co., 950-951 Crane Company. 1044-1045 Detroit Lubricator Co.. 992-993 Frick Company. 946 Crane Company, 1044-1045 Fedders Manufacturing Co., 896- 897 " Frick Company. 946 TUBING, Fabricated Grinnell Co..

T a b l e 7.

HEATINC VENTILATINC AIR CONDITIONING CUIDE 1943 The methods just described for the design of the two elementary systems are fundamental and apply to the design of all hot water heating systems.

HEATING VENTILATING AIR CONDITIONING GUIDE 1943 DESIGN OF SYSTEMS Various factors are to be considered in the design of a central system, some of which have been touched upon in the foregoing as a modification or economic factor, while others are a part of the normal design procedure.

HEATING, VENTILATING AIR CONDITIONING GUIDE 1943 Table 5.