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oil pan 4 · 11-09-16, 10:23 PM

Oops I never did give make and model number.
It's a "Marey" model GA16NGETL
This is a smaller unit, at 4.3gpm water heating capacity this one is not really intended to be a whole home unit.
It can use the existing gas system and with 3 inch intake and exhaust requirement it will work fine with the existing 3 inch exhaust and 4 inch abandoned wall heater exhaust vent in my house.

Whole home units ate typically 7.5gpm. And they need large 5 inch intake and exhaust ducts. Existing exhaust vents are likely 3 or 4 inch Then the existing 1/2 inch 0.4psi gas line systems in most homes may not be able to provide enough gas.

11-09-16, 10:23 PM	#8
oil pan 4 Land owner Join Date: Nov 2012 Location: NM Posts: 1,026 Thanks: 12 Thanked 127 Times in 107 Posts	Oops I never did give make and model number. It's a "Marey" model GA16NGETL This is a smaller unit, at 4.3gpm water heating capacity this one is not really intended to be a whole home unit. It can use the existing gas system and with 3 inch intake and exhaust requirement it will work fine with the existing 3 inch exhaust and 4 inch abandoned wall heater exhaust vent in my house. Whole home units ate typically 7.5gpm. And they need large 5 inch intake and exhaust ducts. Existing exhaust vents are likely 3 or 4 inch Then the existing 1/2 inch 0.4psi gas line systems in most homes may not be able to provide enough gas.