Additional heat shield on a double wall pipe?

[aries339]

Hi everyone! I'm in my third season as a wood-burner, using a Morso 1440 (convection) with double wall stove pipe. The wall behind it is painted plaster-lathe

I've had good experiences so far, other than the cat nearly setting her tail on fire brushing against the glass, but I digress...

I'm obeying all of the clearances (and then some), but even with the double wall pipe, there seems to be a cumulative effect on the wall behind the stove. The wall is never too hot to touch, but the "finish layer" of plaster is slowly peeling off the "rough layer" of plaster.

I just want to be proactive about this before (God forbid) it becomes a real problem. I prefer not to put a heat shield on the wall, because the affected area is only a small spot right behind the first section of pipe, just above the connector. The area behind the stove itself is barely warmer than room temperature.

So I was thinking about adding one of these shields: http://www.efireplacestore.com/cpf-54120.html

But I can only find that sort of thing advertised as an accessory to single-wall pipe. Could this one, or another similar product, be adapted to my double wall pipe as an additional heat shield?

Thanks for your help!!
Ty

 

[Squirrel]

If your stove has the same heat shield on the back as my 1410, which had the same problem with nothing shielding the radiant heat from the collar, you can solve the problem with two key rings and a rectangle of thin metal. Mine is actually a short section of dryer vent pipe flattened out. Slide the key rings onto the heat shield and then slide your "shield" into place.

Guess that would look better painted black....one day!

 

[aries339]

If your stove has the same heat shield on the back as my 1410, which had the same problem with nothing shielding the radiant heat from the collar, you can solve the problem with two key rings and a rectangle of thin metal. Mine is actually a short section of dryer vent pipe flattened out. Slide the key rings onto the heat shield and then slide your "shield" into place.
View attachment 144844 View attachment 144845
Guess that would look better painted black....one day!

Good suggestion - sheet metal fastened to the top of the existing rear heat shield... Yes, my rear heat shield looks like yours. Any concern about melting the keyrings? I'd have no way to confirm exactly what type of alloy a keyring is made of... Actually, now that I'm considering your suggestion - maybe I could just make the sheet metal a little longer on the bottom and screw it in with the heat shield's existing screws??

 

[begreen]

Good quick solution there Squirrel. How far is the stove back from the wood paneling?

aries, those key rings wouldn't melt in a month of Sundays. The heat there is no where near the melting point of steel or an alloy. You could just screw it to the top edge if you want to make it more permanent.

 

[aries339]

Good quick solution there Squirrel. How far is the stove back from the wood paneling?

aries, those key rings wouldn't melt in a month of Sundays. The heat there is no where near the melting point of steel or an alloy. You could just screw it to the top edge if you want to make it more permanent.

Yeah I think I'll screw it on just for aesthetics. I know steel wouldn't melt there; I just know keyrings are often cheaply made overseas so I wouldn't want to "depend" on one by any means.

Thanks a ton for the advice, both of you. In hindsight it's an obvious solution but it just hadn't occurred to me!

 

[Squirrel]

I just knew someone would query the clearance when I took the pics! It's 7". the secondary air runs up inside the entire rear of the firebox, keeping it cooler and there is a double heat shield on the rear of the stove. Even at full blast you can lay your hand on the back and it's about room temperature, it's the main reason I chose the stove. Unfortunately nobody, apparently, checked how hot the collar gets.

 

[begreen]

Squirrels getting hot under the collar. Looks like you came up with a good solution.