National Fuel Gas Code Question - can a gas line be too close to the rear vent on a mastertemp heater?

[QPSUtah]

Does ANSIZ223.1 dictate how close a gas line can be next to the vent on a pool heater? A customer just sent me this picture wondering if the gas line is too close to the vent. My tech is telling me since the vent mostly vents upward, the gas line is fine and that code just indicates they can't be touching. I also spoke with an HVAC friend who similarly says the code doesn't mention anything specific to this either. So I'm guessing it's okay. I tried to find the code language but it's $100 to download, so thought I'd try here first.

Obviously the gas line has to run into the back of the vent regardless, and nothing in the pentair manual says anything about the gas line either, but wanted to follow up here.

Thanks as usual to this incredible forum!

 

[JamesW]

This shows 18 to 24" of pipe from the heater straight out from the heater.

 

[JamesW]

7.2 Installation of Aboveground Piping.

7.2.1 Piping installed aboveground shall be securely supported and located where it will be protected from physical damage.

N 7.2.2 Protective Coating.

Where piping is in contact with a material or an atmosphere corrosive to the piping system, the piping and fittings shall be coated with a corrosion-resistant material.

 

[JamesW]

10.20.5 Venting.

A pool heater listed for outdoor installation shall be installed with the venting means supplied by the manufacturer and in accordance with the manufacturer’s instructions.

5.8.4 Regulator Protection. Pressure regulators shall be protected against physical damage.

 

[QPSUtah]

This shows 18 to 24" of pipe from the heater straight out from the heater.

View attachment 624643

I think that may technically just mean from the valve itself and not really mean orientation. I'm not sure if that means a straight line in/out from the heater.

 

[JamesW]

I can't find a specific reference that says that it is ok or not ok.

Maybe see what Pentair says.

The pipe does need protection from corrosion, so that needs to be done.

Is that a regulator near the exhaust?

The code does say that the regulator needs to be protected from damage, so it might be too close and subject to possible damage.

The regulator should have an installation manual that specifies what ambient conditions are acceptable and not acceptable.

5.8.4 Regulator Protection.

Pressure regulators shall be protected against physical damage.

NFPA 54/ANSI Z223.1 NATIONAL FUEL GAS CODE
5.8.4 Location. The gas pressure regulator shall be accessible for servicing.
5.8.5 Regulator Protection. Pressure regulators shall be protected against physical damage.

 

[QPSUtah]

I can't find a specific reference that says that it is ok or not ok.

Maybe see what Pentair says.

The pipe does need protection from corrosion, so that needs to be done.

Is that a regulator near the exhaust?

The code does say that the regulator needs to be protected from damage, so it might be too close and subject to possible damage.

The regulator should have an installation manual that specifies what ambient conditions are acceptable and not acceptable.


NFPA 54/ANSI Z223.1 NATIONAL FUEL GAS CODE
5.8.4 Location. The gas pressure regulator shall be accessible for servicing.
5.8.5 Regulator Protection. Pressure regulators shall be protected against physical damage.

Okay. I'll doublecheck.