Document mm9E1wBkZ4XJ0mov8dOd0Qdmb

HEATING VENTILATING AIR CONDITIONING GUIDE 1942 Pressure 1 lb per square inch 144 lb per square foot 2.0421 in. mercury at 62 F 2.309 ft water at 62 F 27.71 in. water at 62 F 1 oz per square inch / 0.1276 in. mercury at 62 F \ 1.732 in. water at 62 F 1 atmosphere 14.6959 lb per square inch 2117 lb per square foot 33.9 ft water at 62 F 30 in. mercury at 62 F 29.921 in. mercury at 32 F 1 in. water at 62 F 0.03609 lb per square inch 0.5774 oz per square inch 5.196 lb per square foot 1 ft water at 62 F -{ 0.433 lb per square inch 62.35 lb per square foot 1 in. mercury at 62 F Metric Units 0.491 lb per square inch 7.84 oz per square inch 1.131 ft water at 62 F 13.58 in. water at 62 F 1 cm = 0.3937 in. 1 in. = 2.540 cm 1 m = 3.281 ft 1 ft = 0.3048 m 1 sq cm = 0.155 sq in. 1 sq in. = 6.452 sq cm 1 sq m = 10.76 sq ft 1 sq ft ; 0.0929 sq m 1 cu cm = 0.06102 cu in, 1 cu in. = 16.39 cu cm 1 cu m 35.31 cu ft 1 cu ft 0.02831 cu m 1 liter 1000 cu cm = 0.2642 gal 1 kg 2.205 lb (avdp)----- 1 lb 0.4536 kg 1 metric ton 2205 lb (avdp) 1 gram 0.002205 lb (avdp) 1 kilometer per hour 0.6214 mph 1 gram per square centimeter / 0.02905 in. mercury at 62 F \ 0.3944 in. water at 62 F 1 kg per sq cm (metric atmosphere) 14.22 lb per square inch 1 gram per cubic centimeter 1 dyne -{ 0.03613 lb per cubic inch 62.43 lb per cubic foot = 0.00007233 poundals 1 joule 1 metric horsepower 1 kilogram-calorie per kilogram _ /10.000.000 ergs " \\ 0.7376 ft-lb -{ 75 kg-m per second 0.986 hp (U. S.) 1.8 Btu per pound 1 gram-calorie per square centimeter 3.687 Btu per square foot 1 gram-calorie per square centimeter per centimeter 1.452 Btu per sq ft per inch 1 gram-calorie per second per square centimeter for a temperature gradient of 1 deg C per centi meter. 2903 Btu per hour per square foot for a temperature gradient of 1 deg F per inch of thickness. 848 CHAPTER 47. TERMINOLOGY Graphical Symbols for Drawings Heating 1. High Pressure Steam 2. Medium Pressure Steam 3. Low Pressure Steam 4. High Pressure Return 5. Medium Pressure Return 6. Low Pressure Return 7. Boiler Blow Off 8. Condensate or Vacuum Pump Discharge 9. Feedwater Pump Discharge 10. Make Up Water 11. Air Relief Line 12. Fuel Oil Flow 13. Fuel Oil Return 14. Fuel Oil Tank Vent 15. Compressed Air 16. Hot Water Heating Supply 17. Hot Water Heating Return Air Conditioning 18. Refrigerant Discharge 19. Refrigerant Suction 20. Condenser Water Flow 21. Condenser Water Return 22. Circulating Chilled or Hot Water Flow 23. Circulating Chilled or Hot Water Return 24. Make Up Water 25. Humidification Line 26. Drain 27. Brine Supply 28. Brine Return Piping -FOF--FOR-FO V- ---- ----------------RD---------;--------------------- --------- RS--------------------- ---------- :--c--------------- -------------------- CH-------------------- ---------- - D - - --:------------b--------------- Plumbing 29. Soil, Waste or Leader (Above Grade) 30. Soil, Waste or Leader (Below Grade) 31. Vent 32. Cold Water 33. Hot Water 34. Hot Water Return 35. Fire Line 36. Gas 37. Acid Waste 38. Drinking Water Flow 39. Drinking Water Return 40. Vacuum Cleaning 41. Compressed Air Sprinklers 42. Main Supplies 43. Branch and Head 44. Drain 849 ----- $-----------------s------