Toronto Snow Melt Boiler Installed Outdoors
This unique Toronto snow melt was roughed in by the builder. We were asked to install the boiler and hydronics under an overhanging front terrace. Since the circuits will be filled with 50% glycol-water solution, freezing of the pipes is not likely. With that in mind the owner will eventually build a wall in front of the setup once a natural gas generator is also installed right of our setup.
This Toronto Snow Melt looked a little hectic when we started on the boiler install. Taming the 3/4″ tubing was the first step.
Drilling across the 2x4s in a way to keep the tubing away from screws was very important. Nobody wants to see a growing puddle of sticky glycol under a finished wall holding all the hydronics. That would drive a grown man to tears. We cut holes in the plywood where the manifolds will be mounted.
3/4″ tubing is no limp spaghetti. It took serious wrestling to get them come out where we wanted them. Upon seeing our signature checkered board the owner decided to wallpaper the place with it once we were done.
This baby is an 11 loop 1-1/4″ trunk Schuller™ Manifold. With both the body and the ends being a full 1-1/4″ in diameter there is no bottle neck restricting flow.
The smaller 2 loop 1″ trunk Schuller™ manifold takes care of the deck underfoot while the large 11 loop 1-1/4″ trunk Schuller™ Manifold supplies the driveway snow melt circuits with heated antifreeze. First the top row of supply side tubing is connected with 3/4″ compression fittings, then the return side follows. The Schuller™ 1-1/4″ snow melt manifolds have air vents built right into the trunk.
With all tubing connected the ball valves get installed and we now have a target for the copper pipes to connect to. The supply side ball valve has a Y strainer built in keeping sediment our of the loops.
At this point the Laars-Mascot 499k BTU/h Neotherm boiler makes it’s entrance. It gives us the other end of the system. All that remains is the easy part; to randomly fill the space between the boiler and manifolds with copper, bronze and stainless steel gadgets we like to call hydronics and this Toronto snow melt system is ready for the winter.
The 1-1/2″ Schuller™ Hydraulic Separator gets mounted next, it will protect the boiler from thermal shock, provide hydraulic separation of the boiler loop and the heating loops, allow dirt accumulation on the bottom of the vessel to be drained out. It is also easy on the eyes.
The supply and return side of the small snow melt manifold and the supply side on the large one is now hooked up. The gas fitter showed up and is hooking up the gas to the boiler and future generator.
At this point we installed the glycol feeder that will keep the pressure of antifreeze at the preset 18 Psi in this Toronto snow melt system and the hydronic expansion tank that will act as a shock absorber and reservoir of the expanding/contracting glycol. The supply side of the boiler is now connected to the hydraulic separator.
The boiler loop pump is also connected to the hydraulic separator and the control electronics are mounted and connected on the wall above the stuff that can leak onto it. The air vent/gauge unit is mounted on the hydraulic tank and the boiler is undressed for access. Heating trace wire is wrapped around the condensation neutralizing tube and drain in the boiler to prevent the condensate water from freezing.
Intake and exhaust vents are connected also. They are a huge 4″ in diameter. By the time this Toronto Snow Melt System is filled up with glycol and the air is bled out the loops it is around 8 pm and darkness descends. The bucket holds 5 gallon of propylene glycol/water mix for future use if needed. Normal antifreeze loss occurs due to air venting and should not exceed a gallon per heating season.
This Toronto Snow Melt System is now completed. No snow will last long on this heated driveway. 500,000 BTU/h will dry it up beautifully. No more shoveling or salting at 6am.
If you have a similar project in mind don’t hesitate to Contact Us.