This project was a retrofit of an existing building that was used for storage and fruit packaging. The fruit packaging area was converted to a wine tasting room with the addition of new restrooms and a future office. The fruit packaging room had an existing slab that was removed. A new slab was installed with the barrier slab insulation, wire mesh, and kitec 1/2 pex-al-pex.

To help control the system from overshooting a tekmar programmable thermostat with slab sensor was installed in the tasting room zone. To keep the restrooms as one zone, a tekmar thermostat was installed in the women's bath with a remote air sensor in the men's room. The office zone had one tekmar programmable thermostat to maintain temperature.

There was an existing conventional boiler producing 180 degree water that was feeding two zones. The first zone was an indirect hot water heater and the second a fan coil in the storage room. We cut into the existing primary loop after the fan coils where the water temperature was the lowest. The system uses a three way thermostatic mixing valve to provide 105-110 degree water to the radiant heat system. We used the Azel digital temperature gauge to monitor the pre-mix temperatures. The system was simple but very effective.

The RPA Annual System Showcase Awards Dinner was held on Friday, Sept. 29 at ISH North America in Chicago.  We are happy to say we were able to take home first place in the Retrofit Category.  The many years of training, and applied knowledge has given us this opportunity to quality work and system design.  We look forward to having the opportunity to help you with your radiant heat system.

• System Showcase Application and Details
• System Showcase Loop Layout