This drawing is to demonstrate a simple and inexpensive method of taking heat from one building to another or to protect underground pipes from freezing, by using 4" flexible corrugated drain pipe for a conduit.
BOTH OF THESE METHODS ARE SUPERIOR TO THE EXPENSIVE INSULATED PIPES
THIS METHOD ALLOWS YOU TO REPLACE LINES OR WIRES WITHOUT DIGGING
OR COVER THE CORRUGATED PIPE WITH RIGID SPRAY FOAM IN THE DITCH.
YOU CAN SPRAY THE PIPE YOURSELF WITH RIGID SPRAY FOAM IN THE DITCH.
1- THE DITCH DOES NOT HAVE TO BE DEEP, 2 TO 3 FT. IS GOOD. 2- INSTALL THE 4" CORRUGATED PIPE IN THE BOTTOM OF DITCH WITHOUT PEX. 3- FILL THE DITCH UP TO THE TOP OF THE CORRUGATED PIPE AND COMPACT. 4- COVER THE CORRUGATED PIPE WITH INSULATION. 5- FINISH BACKFILLING THE DITCH AND COMPACT. 6- TO INSTALL TUBING IN THE ADS, BEND A FOOT OF IT BACK SHARPLY, TAPE THE END TO ITSELF.