Exhaust for Hot Water heater near a condenser

[ccd0585]

Hello we have a split central AC with the condenser outside and air handler/furnace in a basement. We placed a navien water heater 199k BTU next to the outside condenser. The inspector failed it saying the exhaust air has the chance of being sucked in and being recirculated through the house. From my understanding that is not how a condenser works. Has anyone ran into this problem at all. The installation manual for the Hot water heater mentions it being 3ft above if within 10ft horizontal from a mechanical air supply inlet. I do not believe the condenser is considered a mechanical air supply inlet. Thanks for the help.

 

[Twowaxhack]

If he said that condenser would pick up the Naviens exhaust then he’s a complete and total idiot.

He probably failed it because of the window.

 

[ccd0585]

Yeah I thought that at fist and I went through the installation manual with him. Manual says it only needs to be 12 inches away from an operable window

 

[Twowaxhack]

Yeah I thought that at fist and I went through the installation manual with him. Manual says it only needs to be 12 inches away from an operable window

Could you provide a link or a model number ?

 

[ccd0585]

Navien model number NPE-240A2
https://www.navieninc.com/downloads/npe-a-s-manuals-installation-manual-en

 

[havasu]

My 240n Navien had a 4' requirement between any functional window.

 

[ccd0585]

Yeah from what I’ve been reading it depends on direct vs indirect venting. Indirect does say something about 4ft below or to the side or 12 inch above. Direct just calls for 12 inch

 

[Twowaxhack]

I think I’d call the inspector and have a chat.

 

[Hamberg]

Manufacture may say 12” but the AHJ has final say (probably based on NFPA 30 codes)

 

[Twowaxhack]

Manufacture may say 12” but the AHJ has final say (probably based on NFPA 30 codes)

There are ways around the AHJ, or at least a way to transfer their power.

You realize that a lot of inspectors are failed contractors ? So you’re usually not dealing with the best of the best, not even close.

 

[Twowaxhack]

I work for most of our city council along with the Mayor and most of the lawyers and judges in town.

In other words “ the real AHJ “.