AC Line Set in Chimney

[Mike Lamb]

I have an old brick chimney which has a new metal liner installed for the furnace and also has the insulated AC line set running up next to it to the roof. I am trying to find the coded reference that says no to this.

This is what I have come up with:

1801.4 Space around lining. The space surrounding a flue lining system or other vent installed within a masonry chimney shall not be used to vent any other appliance. This shall not prevent the installation of a separate flue lining in accordance with the manufacturer's installation instructions and this code.

Thanks.

[Marc]

I'll bet no code forming committee ever imagined that one day someone would stick an AC line set within a retired masonry flue alongside a metal liner.

Don't know of such a code prohibition.

Marc

[Mike Lamb]

Thanks. I went with the single wall vent needing a 6" min. clearance from combustibles. They should have run the line-set up the outside wall which was do-able.

[Rob Amaral]

....it never ends.. It's amazing how many 'new problem statements' I have to create every week...