The expandable Grundfos UPZC series of zone controls manage circulator and boiler control in residential hydronic heating systems. The non-networked devices control up to six heating zones and can be coupled together in various configurations to accommodate any application. Boiler pumps, domestic hot water pumps, system pumps and pump priority are all controlled from the Read more
Heating & Cooling
The expandable Grundfos UPZC series of zone controls manage circulator and boiler control in residential hydronic heating systems. The non-networked devices control up to six heating zones and can be coupled together in various configurations to accommodate any application. Boiler pumps, domestic hot water pumps, system pumps and pump priority are all controlled from the UPZC control.
The zone relay control connects to standard thermostats using either two or three wires. The optional third wire provides 24VAC to thermostats that require external power. The UPZC operates in a cold start configuration with a call-for-heat from a thermostat. The module’s relay is energized which, in turn, switches 120VAC to activate the circulator and also provides a call-for-heat signal to the boiler.
Side-mounted terminals provide simple access and wiring, while the forward facing, easy-to-read LED display on the front panel shows system status and zone function.
All models are UL-listed in the United States and Canada and carry a three-year warranty.
WaterFurnace International, Inc., a leading manufacturer of geothermal and water source heat pumps, introduces the 5 Series 504W11 hydronic geothermal heat pump, featuring WaterFurnace’s patent-pending OptiHeat vapor injection technology. While most hydronic geothermal systems generate 130°F water, OptiHeat creates exiting water temperatures up to 150°F, thanks to an additional heat exchanger that diverts excess heat Read more
WaterFurnace International, Inc., a leading manufacturer of geothermal and water source heat pumps, introduces the 5 Series 504W11 hydronic geothermal heat pump, featuring WaterFurnace’s patent-pending OptiHeat vapor injection technology.
While most hydronic geothermal systems generate 130°F water, OptiHeat creates exiting water temperatures up to 150°F, thanks to an additional heat exchanger that diverts excess heat and reinjects it into the system. This provides increased heating capacities and greater efficiencies. This product is the first water to water heat pump for the North American market to feature vapor injection technology.
“OptiHeat was the result of strategic research and development, including customer feedback,” said Tim Litton, director of marketing communications, WaterFurnace International, Inc. “Combined with other innovative features, the 5 Series 504W11 offers consumers highly efficient heating capabilities in a very small footprint. It’s the most efficient, Energy Star rated water to water heat pump available on the market.”
Offering efficiencies up to 16.1 EER and 3.3 COP, the 5 Series 504W11 is ideal for high-temperature applications, such as baseboard radiator systems, underfloor radiant applications, overfloor radiant applications, and fan coils. The units can operate in heating-only or heating/cooling modes.
Copeland scroll compressors – double isolation mounted for quiet operation – combine with R410-A refrigerant and an extra heat exchanger to provide exceptional efficiency, reliability and energy savings.
WaterFurnace’s Aurora communicating controls platform provides simple setup, troubleshooting and diagnosis. Additionally, WaterFurnace’s Aurora Interface Diagnostic (AID) tool simplifies service and diagnostics for contractors, thanks to its external communication port that does not require opening the unit. IntelliStart, an optional soft starter, can reduce start-up amperage by up to 60 percent of normal draw, reduce noise, eliminate light flicker and increase compressor life.
The 5 Series 504W11’s cabinet is fabricated from heavy-gauge steel, while a professional-grade textured finish provides long-lasting protection. Control panels can be placed on either end, which allows piping to be located on the front or back and helps improve serviceability.
To learn more, visit the WaterFurnace website at www.waterfurnace.com.
The city of Amboy, Ill. needed an in-floor radiant heating and domestic hot water (DHW) system, and Grasser’s Plumbing and Heating was more than happy to oblige. Grassers has been making customers happy for over a half of a century. In fact, and they have become one of the most successful and trusted plumbing and Read more
The city of Amboy, Ill. needed an in-floor radiant heating and domestic hot water (DHW) system, and Grasser’s Plumbing and Heating was more than happy to oblige. Grassers has been making customers happy for over a half of a century. In fact, and they have become one of the most successful and trusted plumbing and heating companies in the LaSalle, Peru, Princeton and Ottawa, Illinois area for more than 60 years.
According to tech Tim Kuhlman—who works mostly high-end new construction and commercial jobs—the city of Amboy needed radiant heat for one of its 4,000-sq.-ft. “sheds,” which is used for the maintenance of city vehicles and storage, and domestic hot water for a service sink.
The hot water solution was a primary/secondary piping application and provided by an NTI Ti200AC Trinity combi boiler, which features a state-of-the-art sealed modulation combustion system with hot surface ignition and patented 316L stainless condensing heat exchanger provides higher efficiencies. The combi boiler supplies heat to stainless steel Viega radiant manifolds—with shutoff and balancing/flow meters—which feeds Viega’s PEX tubing in the floor, and it also supplies domestic hot water for the service sink.
Inside the Job
Boiler — NTI Ti200AC Trinity combi boiler
Pumps — B&G pl 36 primary; Taco 2400-24 secondary
PEX — Viega & REHAU
Valves — NIBCO
Expansion Tanks — Extrol
Balancing/Flow Meters — Viega
Air Eliminator — Honeywell Supervene
https://youtu.be/G6oOo1OBQDw Mechanical Hub is proud to present its continuing Onsite Video Series. In this video, we feature Jason Ridgeway, owner of Ridgeway Home Services, as he talks about this 24,000-sq.-ft. custom residential geo/radiant project, which features Caleffi products Read more
Mechanical Hub is proud to present its continuing Onsite Video Series. In this video, we feature Jason Ridgeway, owner of Ridgeway Home Services, as he talks about this 24,000-sq.-ft. custom residential geo/radiant project, which features Caleffi products.
Mechanical Hub and Lochinvar are proud to team up to bring you the second feature in our Hydronics CSI series. Hub friend Paul Rohrs, design and application specialist for Lochinvar, has produced a hydronics design with intentional flaws in it. There are multiple mistakes with this diagram and it is up to you to Read more
Mechanical Hub and Lochinvar are proud to team up to bring you the second feature in our Hydronics CSI series. Hub friend Paul Rohrs, design and application specialist for Lochinvar, has produced a hydronics design with intentional flaws in it. There are multiple mistakes with this diagram and it is up to you to use your hydronics knowledge to figure out what they are.
PROBLEM
This was to be a Full Flow/Variable Primary System. Problem with current boiler piping: New install with six boilers, three boilers on one housekeeping pad, three boilers on another housekeeping pad that is across from it. Find all flow related and other potential issues.
The contestants who come closest to the answers will be put into a drawing to win a jacket from Lochinvar.
Good luck!
