WllLUM H DiVtS Arb* B.

HEATING VENTILATING AIR CONDITIONING GUIDE 1940 The maximum rating as defined in the preceding paragraph shall be based upon com bustion of Pennsylvania anthracite, having, the following approximate analysis: Volatile matter 3.5 to 9 per cent; ash content not to exceed 15 per cent; sulphur content Under 1.5 per cent; ash fusing temperature 2750 F, or above (volatile, ash and sulphur content on dry basis in accordance with A .S.T.M. method D271-33); Btu content 12,000 or above; properly sized as follows: A No. 1 buckwheat should pass through a round mesh screen having jKe in. holes and over a similar screen having Y\c in. holes.

HEATING VENTILATING AIR CONDITIONING CUIDE 1940 Conversion Burners Residence heating with gas through the use of conversion burners in stalled in coal-designed boilers and furnaces represents a common type of gas-fired house heating system.

V HEATING VENTILATING AIR CONDITIONING GUIDE 1940 effected by use of- direct-acting radiator valves having a thermostatic element at the valve, or near to it.

HEATING VENTILATING AIR CONDITIONING GUIDE 1940 connection for intake water should be placed as far below the surface as possible, and at as great a distance from the discharge as practicable.

HEATING VENTILATING AIR CONDITIONING GUIDE 1940 MERRILL, Frank A.

HEATING VENTILATING AIR CONDITIONING CUIDE 1941 size and flow.

HEATING VENTILATING AIR CONDITIONING GUIDE 1941 Table 2.

HEATINC VENTILATING AIR CONDITIONING GUIDE 1941 room thermostat regulates the supply of steam to the unit through a control valve in the steam supply line and the unit heater motor operation is manually controlled.

HEATING VENTILATING AIR CONDITIONING GUIDE 1941 carbon dioxide.

HEATINC VENTILATING AIR CONDITIONING GUIDE 1941 GENERAL REQUIREMENTS In general, air conditioning apparatus for industrial purposes must be capable of absorbing heat from various sources such as machinery power, electric lights, people, sunlight and chemical reaction; of warming or cooling to any desired temperature, and of providing ample air supply at all times.

HEATING VENTILATING AIR CONDITIONING GUIDE 1941 FAMILBTTI, A.

HEATING VENTILATING AIR CONDITIONING GUIDE 1941 Fairland-- Garber, W.

HEATING VENTILATING AIR CONDITIONING GUIDE 1942 Therefore, calculations based on the latter assumption are likely to be somewhat in error.

HEATING VENTILATINC AIR CONDITIONING GUIDE 1942 boiler.