New Harmon P68 leaking smoke from ash pan door during power outage.

[Washed-Up]

Just a heads up for your oak, the stove pipe inlet for the oak is 2.75”, on the oaks I’ve done, it’s easier to find an adapter and go 3” tubing….always go a bit bigger not smaller.

 

[bogieb]

Just a heads up for your oak, the stove pipe inlet for the oak is 2.75”, on the oaks I’ve done, it’s easier to find an adapter and go 3” tubing….always go a bit bigger not smaller.

Good advice right there. An adapter may not be necessarry as you can use a good ring clamp (assuming you use the flexible aluminum tubing).

 

[gfreek]

That's a really good question. When I questioned my dealer about it, he said if the house is older it's not tight enough to need one. I believed him. The next closest dealer said the same thing.

I still don't have one, but after reading the comments here, I will have one in my future house.

Without an OAK, the stove is pulling cold air through cracks in the house and into the stove. Theoretically, the harder the stove works, the more cold air it pulls through the house. With an OAK, the cold air is pulled into the stove directly, not through the house. This should translate to a warmer/less drafty house when it's super cold outside.

Also, with an OAK supplying ample air, combustion is better, so the glass should stay cleaner longer.

If your house is tight, you might have an issue when the stove is lit, if the hot water heater (if it's gas), the clothes dryer, and the bathroom fan are on all at the same time. The stove might not get enough air and have poor combustion.

Exactly..

 

[Wildbil26]

The dealer just came out. Was a new person I havent seen before and he seemed very knowledgeable. I showed him the seam and he was hesitant to say it didnt look normal, only said that door style is newer and they havent heard any complaints yet but he is going to contact Harman and see what they have to say. Also, he said a high temp silicone should seal it up but I think he wanted to talk to Harman first. He said everything else is sealing fine, flame seems spots on and all else looks good.
Forgot to ask about the OAK, I was half asleep lol so at least he is looking into it… 🤞

 

[Jimmyspirits]

Page 18 of Harman install manual:
Outside Air: Hearth & Home Technologies recommend attaching outside air in all installations, especially lower level and main floor locations.

Why would the level that the stove was installed make a difference with regards to the OAK? Thanks.

 

[Mt Bob]

Why would the level that the stove was installed make a difference with regards to the OAK? Thanks.

It's basically a warning to do it properly, per the instructions. Especially if it is a below ground basement install.