675 IAC 30-8-10 Water columns, gauge cocks, and gauge glasses

Sec. 10. (a) No outlet connections shall be placed on the piping that connects the water column to the boiler. The only exceptions allowed are as follows: (1) Damper regulator. (2) Feed water regulator. (3) Low water fuel cut-out. (4) Drains. (5) Gauges. (6) Such apparatus that does not permit the escape of an appreciable amount of steam or water. The water column shall be provided with a valved drain of at least three-fourths (3/4) inch pipe size. (b) Each boiler shall have three (3) or more gauge cocks, located within the range of the visible length of the water glass, except when such boiler has two (2) water glasses with independent connections to the boiler, located on the same horizontal line and not less than two (2) feet apart. (c) For all installations where the water gauge glass or glasses are more than thirty (30) feet from the boiler operating floor, water level indicating or recording gauges shall be installed in such a manner that they are clearly visible from the operating floor.