Whole House Radiant Floor Heating with a Pool Heater in Oakville.
We have completed for the most part this project for the Stone Shore Group in Oakville. This home is a prime example of how whole house radiant floor heating and cooling can work without the need for any ducts. This stunning modern home has an outdoor pool that in the summer is heated by the same boiler that takes care of the house heat and the domestic hot water. The air conditioning and fresh air introduction is through an ERV featuring a Vanee 70E+ Air Exchanger system will all the piping hidden in the open joists Peter Marit of Stone Shore likes to use in his builds. Noticeable is the lack of boxing that is usually needed to hide pipes and ducts. Their absence mean enlarged living spaces and higher ceilings throughout the home.
We also are doing the plumbing for Peter as usual. This does not only save him hassle of organizing two trades but allows us faster work as we don’t need to wait for the plumber or vice versa. In one visit we switch between being plumbers and radiant heating installers as needed.
Peter did the basement insulation and piping himself as he is a very hands on builder and always looking for new challenges. When he dabbles he is a heavyweight throwing serious punches. Many professional floor heating companies don’t do the beautiful job he did at his first attempt. Mind you he’s been looking over our shoulders for 15+ years.
We came in to staple down 1/2″ tubing onto the plywood on the upper floor. The island counter was outlined so we stay away from it as well as the fridge. Peter runs the cleanest job site we’ve ever seen. We never have to stumble across trash left by other trades. We honor him by cleaning up after ourselves as we do everywhere else of course, but usually by the time we are done he has all rubbish cleared away. He goes above and beyond to help the trades concentrate on the job at hand.
All pipes are brought to the wall where the kitchen sink will go. He will have an access door under the sink hiding the manifold. Since the walls are spray foamed it is in a warm space. The main floor will be a single zone.
Once all pipes are paid on the main floor we bring the supply and return 1″ tubing out next to the manifold location. With the floor vacuumed clean the Agilia® Screeds free-flowing floor screed can be poured over the tubing and will stick to the plywood like glue.
Next to the large sliding doors and huge windows where heat loss is the highest we kept the pipes only 2″-4″ apart to provide that extra heat delivery that will keep the place warm all throughout.
We put floor heating under the wall mounted toilet in the powder room as well.
With the main floor done we move to the second floor where there will be three separate heating zones. It makes sense zoning on upper floors where the floor plates act as thermal break between the rooms.
We collect all 10 loops from the second floor into the small storage room next to the elevator shaft. Another 1″ pair of supply and return tubing is next to it and pressurized for the duration of the pour. Since the zones will need thermal actuators to control them we also bring all needed wires in place. The floor has been poured already on this image.
This is how the Schuller manifold and thermal actuators look installed. The supply and return is also connected to the manifold. Since it is so much higher than the basement where all hydronics will be installed it is essential that we have an air vent on the manifold.
The main floor manifold mounts to the wall as well. No actuators are needed for this floor.
Now that the manifolds are installed we are headed to the mechanical room. We have a whole wall to play with. The only thing we have to be mindful of is a water filtration system that will go at the far end. Here is the drawings from Schuller Hydronics that we will need to implement in copper.
Schuller Hydronics supplies mechanical drawings and many of the hardware that goes into their design. You can find their goodies in the Hydronics Depot.
We have a Lochinvar Squire 80 Gal Indirect Water Heater, an IBC SL260 G3 boiler and a Thermo2000 Buffmax 80 Hydronic Buffer Tank.
First the two tanks get hooked up. The pre-made header is also from Schuller Hydronics.
On the right side of the Buffmax tank the second Schuller header goes on the wall. No need to solder Tees with this pre-made header. The pool heat exchanger connects to a closely spaced Tee right off the boiler loop for maximum temperature water.
The last Schuller manifold is mounted on the wall. This will take care of the basement’s floor heating.
The first calculator pump is for the basement. The second one is a Bell & Gossett 16-19 ECM pump that is responsible for the second floor. With its constant pressure feature it adjusts to the actuators opening and closing for the different zones automatically maintaining constant flow and pressure no matter which zone is calling.
Here all the circulators are connected and so is the expansion tank and the water makeup system. These pumps are the ones taking care of the whole house radiant floor heating.
The boiler and indirect heater’s pumps get their power and the low voltage wires connect the boiler. Time for filling the system up with water and purging all air.
With a temporary water supply the water makeup fills the system. By now the gas guys have vented the boiler and gave it gas.
There is an easy access from the mechanical room to vent the boiler outside. The exhaust vent got insulation on it to prevent condensation freezing inside.
The supplies and returns going to the upper floor manifolds are ready.
We are at pressure with no more air in the system. Time for liftoff.
We then install and set the Schuller WiFi Thermostats.
The heat is on The boiler is at full throttle quickly bringing the buffer tank up to temperature. The whole house radiant floor heating is now on. This way the mud dries fast and can be sanded so the painters can move in. The next step is hooking up the domestic water side of the indirect heater in a few days.
Please Contact Us if you have a similar project in mind.