| Date |
Text |
| 2010-10-22 10:20:18 | *******PROVISO***** |
| | |
| | 504.6 REQUIREMENTS FOR DISCHARGE PIPING. THE DISCHARGE |
| | PIPING SERVING A PRESSURE RELIEF VALVE, TEMPERATURE |
| | RELIEF VALVE OR COMBINATION THEREOF SHALL: |
| | |
| | 1. NOT BE DIRECTLY CONNECTED TO THE DRAINAGE SYSTEM. |
| | 2. DISCHARGE THROUGH AN AIR GAP LOCATED IN THE SAME |
| | ROOM AS THE WATER HEATER. |
| | 3. NOT BE SMALLER THAN THE DIAMETER OF THE OUTLET OF |
| | THE VALVE SERVED AND SHALL DISCHARGE FULL SIZE TO THE |
| | AIR GAP. |
| | 4. SERVE A SINGLE RELIEF DEVICE AND SHALL NOT CONNECT |
| | TO PIPING SERVING ANY OTHER RELIEF DEVICE OR EQUIPMENT. |
| | 5. DISCHARGE TO THE FLOOR, TO THE WATER HEATER PAN, TO |
| | AN INDIRECT WASTE RECEPTOR OR TO THE OUTDOORS. WHERE |
| | DISCHARGING TO THE OUTDOORS IN AREAS SUBJECT TO |
| | FREEZING, DISCHARGE PIPING SHALL BE FIRST PIPED TO AN |
| | INDIRECT WASTE RECEPTOR THROUGH AN AIR GAP LOCATED IN A |
| | CONDITIONED AREA. |
| | 6. DISCHARGE IN A MANNER THAT DOES NOT CAUSE PERSONAL |
| | INJURY OR STRUCTURAL DAMAGE. |
| | 7. DISCHARGE TO A TERMINATION POINT THAT IS READILY |
| | OBSERVABLE BY THE BUILDING OCCUPANTS. |
| | 8. NOT BE TRAPPED. |
| | 9. BE INSTALLED SO AS TO FLOW BY GRAVITY. |
| | 10. NOT TERMINATE MORE THAN 6 INCHES (152 MM) ABOVE THE |
| | FLOOR OR WASTE RECEPTOR. |
| | 11. NOT HAVE A THREADED CONNECTION AT THE END OF SUCH |
| | PIPING. |
| | 12. NOT HAVE VALVES OR TEE FITTINGS. |
| | 13. BE CONSTRUCTED OF THOSE MATERIALS LISTED IN SECTION |
| | 605.4 OR MATERIALS TESTED, RATED AND APPROVED FOR SUCH |
| | USE IN ACCORDANCE WITH ASME A112.4.1. |
| | |
