Thanks to everyone that voted for our entry in the Caleffi Excellence competition. We not only made it into the top four for voting, the panel of judges also selected our entry as the grand prize winner! Thanks to all of you that voted and made this possible!
Read about “The Winning Combination: Quality + Caleffi Excellence” by clicking here.
About the Project:
The building is a 40-unit Community Based Residential Facility (CBRF) with a memory care wing on one end. The owners try to provide a very comfortable living environment that surpasses that of what you would likely find in most elderly care facilities. Keeping that in mind we wanted to provide the most comfortable type of heating – radiant floor heat. We have been installing radiant floor heat since the late 1980’s.
For this project we ran 40,000 feet of ½” Pex tubing in the floor. The floor heat will be run by two modulating IBC boilers which also run two indirect water heaters for the domestic hot water. A third IBC boiler distributes hot water for fan cabinets to heat the common areas.
Code requires a large amount of fresh air for the fan cabinets so we needed to use a higher propylene glycol content to prevent freezing in the coils or piping as our winter temperatures can get down to as low as -30F. Since the domestic hot water and in floor heat do not need to have as high of a propylene glycol content it was most efficient to separate those two boilers from the fan cabinet boiler.
For the two IBC Boilers running the floor heat and domestic hot water a Caleffi #548099A Hydro Separator was used. The Caleffi Hydro Separators install very nicely and we find that they work very well with the modulating IBC boilers for in floor heat and domestic hot water. We have used almost every air separator on the market and have found the Caleffi to be the best especially at holding up well over time.
There are 13 zones for the radiant floor heating based on orientation and use of different areas. These zones will help provide better comfort and energy savings. Twenty-six Caleffi Z45 ¾” zone valves were used for the floor heat zoning. Three Caleffi Z46 1” zone valves were used for the fan cabinets. Over the past thirty-five years we have used many different zone valves and have found the Caleffi valves to be the best.
As a company we strive to give our customers the best products as possible for the most reasonable price and Caleffi helps make this possible. Our wholesaler, JH Larson, played a large role in the project, not just providing us with the Caleffi products, but also with the system design. JH Larson’s HVAC Technical advisor, Steve Hawthorn, was the designer of the system. Our master plumber, Josh Turner, was the main installer on the project and has been a great asset to our company for 15 years.