Takiagi tankless 2007

[Mmtc79]

Correct me if I'm wrong these things are cat 3 appliances and must be vented with stainless correct
Not aluminum dryer vent lol

[walker]

The manufacturer recommends the Flexmaster line.
However, the following are also UL listed manufacturers:
ProTech Systems Inc. (FasNSeal), Metal-Fab Inc., and
Heat-Fab Inc. (Saf-T Vent).

No dryer vents....

[Mmtc79]

Admin ? What would be best code to tag this with in reference to wrong venting material 8.10.4 also table 8.5 category 3 appliance ?

[walker]

4.1.3
An appliance, accessory, component, equipment, or any other item shall be installed in accordance with the manufacturer's certified instructions and this Code

[Mmtc79]

Yeah I atag IT I guess merry xmas