Continue fitting the panels and securing them with the PEX. Mark the panels that need to be cut, and use a circular saw to make the cuts.
When making a filler piece, make them as big as possible.
Continue around the room, fitting the panels into place.
Note: Use tile setters between each panel to create a 1/8 inch gap to allow for expansion.
Place the panel into position, and place a tile spacer in between the panels. Screw the panel into place.
Remove the next panel, and apply the adhesive. Insert the spacers and reinsert the short piece of PEX into the track to further ensure alignment.
The thermostat that powers radiant heat flooring has a sensor that measures the temperature of the floor. The placement of this sensor is crucial for optimal performance. The best place for the sensor is midway in the radiant loop in the thinnest space between the panels and tile.
Leave the feed and return panels for the PEX loose. Drill two holes through the wall to get to the water heater. Mark them down, and keep the hole in line with the track. Remove the panel so the drill won't cause any damage.
Permanently mount the last two panels.
Remove the short pieces of PEX installed earlier.
Tip: Always unroll the PEX pipe as you go to prevent kinks.
Mark the end of the pipe in the direction the water will flow, and feed that end through the wall. Be sure to push plenty of extra pipe through the wall.
Leaving extra pipe, cut the PEX so you can feed it back through the wall.
Use a mallet to ensure the PEX hasn't popped out of the track.
Tip: Run air or water through the system to check for leaks before installing the finished floor.
The radiant mixing block ties into the water heater. The feed and return from the radiant block will go into two ports and is connected to the supply, which comes from the water heater.
Add Teflon paste to the threaded 3/8-inch PEX adaptor, and connect to the threaded male adaptor.
Use a pair of slip joint pliers to tighten down the connection. Repeat the process on the other radiant loop port.
Mark and mount the valve using 1/4" x 2" hex screws.
Connect the other side of the radiant loop, and run the thermostat line into the valve and replace the cover.
Hook up the control panel by finishing up the wiring.
Note: Always check with the manufacturer's instructions before wiring for specific instructions.
Connect the controller to the water heater thermostat.