So far, we have spoken with three fireplace installers, and each prefers a different option for the fresh air supply. We will choose a room-air-independent fireplace and therefore need a fresh air supply from outside. The following options were recommended to us:
1. Pipe through the foundation slab with a mushroom vent in the garden
2. Chimney with two adjacent flues, one for exhaust gases and one for fresh air (e.g., Schiedel Xpert)
3. Chimney with concentric fresh air supply (e.g., Erutec FLAS)
Option 1 can be relatively inexpensive, but we don’t want a pipe or mushroom vent visible outdoors.
We like option 2.
Option 3 is supposed to preheat the incoming fresh air, improving combustion. On the other hand, I imagine that the warming fresh air might have difficulty sinking downwards, which could make its functionality dependent on weather conditions and therefore somewhat unreliable.
Do you have any good advice on this?
1. Pipe through the foundation slab with a mushroom vent in the garden
2. Chimney with two adjacent flues, one for exhaust gases and one for fresh air (e.g., Schiedel Xpert)
3. Chimney with concentric fresh air supply (e.g., Erutec FLAS)
Option 1 can be relatively inexpensive, but we don’t want a pipe or mushroom vent visible outdoors.
We like option 2.
Option 3 is supposed to preheat the incoming fresh air, improving combustion. On the other hand, I imagine that the warming fresh air might have difficulty sinking downwards, which could make its functionality dependent on weather conditions and therefore somewhat unreliable.
Do you have any good advice on this?
blockhauspower16 Jun 2016 22:34As far as I know, with Schiedel the flue pipes are directly inserted into the liner block. With other manufacturers, they are held in place by metal brackets.
S
Sebastian7917 Jun 2016 08:24Here exactly the other way around
Sebastian79 schrieb:
Exactly the other way around here Lol
P
Peanuts7417 Jun 2016 08:36I would also rule out option 1, partly because of the appearance (you never know in advance where each bush will end up after construction) and not least because of possible pranksters who might tamper with it on Halloween.
Hi,
Since our design water level is at ground level = turf, I’m not going to drill any holes in the basement wall... You would then need a Doyma seal along with a sleeve pipe, install everything, and there’s absolutely no light or air shaft anywhere nearby. And you probably have to get individual approval from the chimney sweep if you want an appliance with independent combustion air.
I admit I didn’t question the chimney offer at all. They suggested a Schiedel/Erlus chimney and that was it. My general contractor probably doesn’t install anything else.
Best regards,
Andreas
Sebastian79 schrieb:
@andimann: Since you have a basement, I don’t understand why you didn’t draw the fresh air supply from there? I have a hole in the wall, an air shaft in front, and that’s it—no mold, no costs.
Since our design water level is at ground level = turf, I’m not going to drill any holes in the basement wall... You would then need a Doyma seal along with a sleeve pipe, install everything, and there’s absolutely no light or air shaft anywhere nearby. And you probably have to get individual approval from the chimney sweep if you want an appliance with independent combustion air.
I admit I didn’t question the chimney offer at all. They suggested a Schiedel/Erlus chimney and that was it. My general contractor probably doesn’t install anything else.
Best regards,
Andreas