Document DMzbDkO4DoxByj7mk3mgEno9B

HEATING VENTILATING AIR CONDITIONING GUIDE 1943 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. 3a * | TR20X/2 71. Automatic Dampers '72. Canvas Connections 73. Fan and Motor With Guard 74. Intake Louvers and Screen . 858 VCHAPTER 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 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=> <0p -o- -da- e JL