Hi,
I have moved into a house with a ten year old Navien CH-240. It has one of those "two-in-one" intake exhaust things, and it runs about twelve feet out the side wall of the garage to the outdoors. (The Navien unit is in the garage.)
I have always noticed a gas smell from the exhaust when it runs, often noticeable from many feet away. I read that a little gas smell was normal, so I put it out of mind. But I just decided to have the gas company out to measure it, just to be sure.
With the Navien unit running while a hot water tap is fully on, the exhaust is blowing out 90% LEL gas and 121ppm CO.
This CH-240 unit does not have some of the altitude-adjusting DIP switches that the newer units have. Has anyone else here had a similar issue with their Navien? Did you have a tech adjust some kind of air/fuel mix in these units? Do you have any tips for successfully troubleshooting and/or adjusting the air/gas mix?
I am hesitant to adjust anything since these units seem so emotionally sensitive!
I have moved into a house with a ten year old Navien CH-240. It has one of those "two-in-one" intake exhaust things, and it runs about twelve feet out the side wall of the garage to the outdoors. (The Navien unit is in the garage.)
I have always noticed a gas smell from the exhaust when it runs, often noticeable from many feet away. I read that a little gas smell was normal, so I put it out of mind. But I just decided to have the gas company out to measure it, just to be sure.
With the Navien unit running while a hot water tap is fully on, the exhaust is blowing out 90% LEL gas and 121ppm CO.
This CH-240 unit does not have some of the altitude-adjusting DIP switches that the newer units have. Has anyone else here had a similar issue with their Navien? Did you have a tech adjust some kind of air/fuel mix in these units? Do you have any tips for successfully troubleshooting and/or adjusting the air/gas mix?
I am hesitant to adjust anything since these units seem so emotionally sensitive!