Proper piping for pressure relief

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Old 12-16-13, 08:54 PM
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Proper piping for pressure relief

I have a pressure relief valve on my boiler and my Amtrol hotwater maker. Both are vertically piped with 3/4" copper with the open end 6" or so from the floor. The boiler room is adjacent to the garage. The garage floor level is 2 steps below the boiler room level. According to the common knowledge of the code, would it be legal to tie the two vertical pipes into a common horizontal line and run this line through the wall and into the garage?
 

Last edited by dbsoccer; 12-16-13 at 09:55 PM.
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Old 12-17-13, 05:50 AM
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You can direct the discharges into a common drain point using a funnel floor drain, but you must leave that 6" air space between the discharge pipe and the drain pipe going into the garage.
There are rules regarding the number of elbows and feet of pipe allowed on the relief valve discharge piping. Once you get to the point where there is an air seperation, you can do what ever you like after that.
Every jurisdiction may have there own take on it, but this seems to be a common theme.
 
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