Document 65p56yn8zYn8MBogKo0pNjXQ3

HEATINC VENTILATINC AIR CONDITIONING GUIDE 1944 Graphical Symbols for Drawings Ductwork " 65. Volume Damper 66. Deflecting Damper . 67. Deflecting Damper, Up 68. Deflecting Damper,. Down 69. Adjustable Blank Off 70. Turning Vanes Efe] 71--------. TR Z0xl2 J_________ I:--- 71. Automatic Dampers 72. Canvas Connections 73, Fan and Motor With Guard 74. Intake Louvers and Screen 828 I +-4--------------- CHAPTER 48. ABBREVIATIONS, SYMBOLS, STANDARDS Graphical Symbols for Drawings Heating and Ventilating 75. Heat Transfer Surface, Plan 76. Wall Radiator, Plan 77. Wall Radiator on Ceiling, Plan 78. Unit Heater (Propeller), Plan 1 1 1 i ~m qj--- 79. Unit Heater (Centrifugal Fan), Plan 80. Unit Ventilator, Plan Traps 81. Thermostatic 82. Blast Thermostatic 83. Float and Thermostatic 84. Float 85. Boiler Return Valves 86. Reducing Pressure 87. Air Line 88. - Lock and Shield 89. Diaphragm 90. Air Eliminator 91. Strainer 92. Thermometer . 93. Thermostat o 0*0 cJo e JL 829