Heated walkway

HDtechNH

I am thinking of installing a heated walkway.  Wondering what the best materials for the job are? I live in NH and would expect it to melt our fairly heavy snowfalls. It would be approx a 70' long walk. I presume I would use 1/2" pex. Six or twelve inches on center? Also two inch foam board under the walk.  Would brick be feasible or would concrete be best? I plan to heat this with an unused zone on my Central Boiler outdoor wood boiler. Any help would be great! Thanks in advance for your time.



Tim

mor

drainage

Suggest, plan where the water should drain to.

Wayne_16

Heat exchanger & glycol

Are you planning to use a heat exchanger, mixing valve and glycol in the snow melt system?  Most likely you will not want the 180* water in the snow melt system.  There will be quite a shock bringing cold water back to the Central Boiler.  the snow melt loop should have glycol in the system and use a mixing valve to maintain a lower snow melt temperature in the tubing 



Use the extra circuit to pipe to a heat exchanger sized fro the snow melt load.  This will be quite large.  Use a seperate pump, mixing valve, expansion tank, and glycol connected to the snow melt system.



Minnesota Wayne