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Tankless The Way To Go?

 
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Old 01-14-2011, 08:45 PM   #1
Lenny Ambrosino
 
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Tankless The Way To Go?


Trying to solve a plumbing problem and as usual getting conflicting information from my pool of plumbers that I use.

Commercial kitchen with a Hobart conveyor style dishwashing machine that uses 8-10 gallons per minute. It has its own dedicated 40 gallon HWH which is not keeping up with the near constant use of the dishwasher.

The closet the HWH is in is not big enough for anything larger than a 50 gallon HWH so I am thinking we need to go tankless. The gas line is 1" feeding from a 3" line about 25' away. One plumber says we need a 250,000 BTU Noritz but we need a bigger gas line, another plumber says no larger gas line needed, and yet another is proposing 2 rinnai tankless units with a bigger gas line. All are in agreement that the double 4" wall vent will have to be replaced.

The HWH would need to bring the water from 60 degrees to 135 degrees so the rinse cycle of the Dishwasher can reach at least 180 degrees.

Any imput on what the best solutiuon would be?

Thanks in advance.
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Old 01-14-2011, 08:53 PM   #2
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Re: Tankless The Way To Go?


How big is the current gasline?

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Old 01-14-2011, 08:55 PM   #3
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Re: Tankless The Way To Go?


Tankless is a good solution to this problem, but I would get a rep from Noritz or Takagi involved to handle the sizing aspect.
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Old 01-14-2011, 10:09 PM   #4
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Re: Tankless The Way To Go?


Quote:
How big is the current gasline?
1" fed from a 3" about 25' above

Quote:
I would get a rep from Noritz or Takagi involved to handle the sizing aspect.
Thats sounds like a good idea
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