Radiant Lines

Radiant Floors

In all cases where a Radiant Line enters into a room, it first runs along the outside wall, then goes to the center of the room preferably in a double serpentine pattern, then the return line goes back along the outside wall, exits the room and travels back to the Boiler.

• We are using 1/2" PEX for Radiant Systems, not for drinking use.
• The Radiant Lines are no more than 1' foot apart throughout the bulk of the living space.
• The Hot Entry Line is placed 3" from the outside wall and runs the perimeter of the room.
• The Cooled Exit Line is placed 3" to 4" inside from the Entering Line, then returns to the Boiler.
• We used the Double Serpentine Method as often as posible, where it wasn't possible we alternated between return line and entering line, or just filled a space with same temperature lines.

Master Bedroom


We began the radiant system in the Master Bedroom, we ran the hot line along the outside walls first, this will also hold true in all other rooms as well. After running the hot line along the outside walls, I heated the floor on Mary's side of the bed, then began a double serpentine run in the center of the room and usable space, then the return line went to heating under the bed and then returned to the Boiler. I figure why heat to a comfortable level an area that isnt lived in, under the bed will still be warm, but the usable space is the primary goal. It took two loops of 250 feet to complete the Master Bedroom. The green lines on the floor are where the walls are. The PEX will be low enough in the concrete to not have to worry about puncturing it with nails when we put up the walls. That and I have a very detailed drawing of where the PEX is in all of the rooms.


Secondary Bedroom #1


All the loops are 250 feet and you have to start counting those feet from the Heating System, so when a room is 60 feet from the Boiler, you have to count 120 feet just to get to the room and back to the boiler that is taken out of the square footage needed to heat the room. In our case both Secondary Bedrooms are 60 feet out, and have two loops heating them because we were using up so much wasted footage.

OK, it isn't wasted footage, we used the 120 feet from the lines to the bedrooms to heat the half of the Living Room, and the entire Laundryroom.


Secondary Bathroom


This is the Secondary Bathroom, it took only a 160 foot loop to heat, the bulk of the heat is in the center and left side of the room, then it goes to the right side, heating under the bathtub, and closet, then returns to the Boiler.