motoguy
ArboristSite Member
Managed to move the Kuuma from it's storage area in a spare room, to it's new location today. Didn't hook up the flue, but did a test fit. Happy with it.
Which brings me to ducting. The Kuuma is located in our walk out basement. The trunk line runs in the center of the house, the length of the house. Branches exit the trunk at 90 degrees, straight to the registers. The trunk is insulated metal, branches are insulated flex ducting, located between joists for the upstairs flooring. Basement ceiling is unfinished.
Ducting from the Kuuma to my existing trunk won't be an issue. This flex ducting...may be. Specifically, the wiring that runs between the joists (perpendicular to joists). In several places the flex ducting is pressed against, or in some places between, electrical runs (Romex). Not an issue currently, but likely more so when replaced with rigid metal ducting.
So...this 1” to combustibles requirement...if I need to squeeze round metal ducting between wires, or against wires, can I just put a barrier there? 1" of some type of high-temp insulation? Is that acceptable, as it gives a 1" barrier from pipe to (I assume combustible) Romex? Does code require a 1" -air- barrier?
If I can do something like that, replacing all this flex tube won't be too big a deal. If I have to arrange a 1” air gap between duct and Romex...life might suck.
The plenum from the wood furnace will rise 3-4 feet, then run horizontally 10' or so before going through a wall (easy to make clearance), then make a 90 degree turn and run another 17' or so before it connects to the existing plenum for the propane furnace. It as at that point it will enter the main trunk for distribution.
Ideas?
While not my home, this is the type of thing I'm talking about. Romex spanning joists, perpendicular to the joist direction. They are not all at the same height, so the existing flex snakes "up and down" through them. No "turns" left or right...just straight runs.
Which brings me to ducting. The Kuuma is located in our walk out basement. The trunk line runs in the center of the house, the length of the house. Branches exit the trunk at 90 degrees, straight to the registers. The trunk is insulated metal, branches are insulated flex ducting, located between joists for the upstairs flooring. Basement ceiling is unfinished.
Ducting from the Kuuma to my existing trunk won't be an issue. This flex ducting...may be. Specifically, the wiring that runs between the joists (perpendicular to joists). In several places the flex ducting is pressed against, or in some places between, electrical runs (Romex). Not an issue currently, but likely more so when replaced with rigid metal ducting.
So...this 1” to combustibles requirement...if I need to squeeze round metal ducting between wires, or against wires, can I just put a barrier there? 1" of some type of high-temp insulation? Is that acceptable, as it gives a 1" barrier from pipe to (I assume combustible) Romex? Does code require a 1" -air- barrier?
If I can do something like that, replacing all this flex tube won't be too big a deal. If I have to arrange a 1” air gap between duct and Romex...life might suck.
The plenum from the wood furnace will rise 3-4 feet, then run horizontally 10' or so before going through a wall (easy to make clearance), then make a 90 degree turn and run another 17' or so before it connects to the existing plenum for the propane furnace. It as at that point it will enter the main trunk for distribution.
Ideas?
While not my home, this is the type of thing I'm talking about. Romex spanning joists, perpendicular to the joist direction. They are not all at the same height, so the existing flex snakes "up and down" through them. No "turns" left or right...just straight runs.