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The Warmup S3 Mixing Unit is essential for managing heat sources where the flow temperature may exceed the design water temperature of the floor heating system. This is particularly relevant for heat sources that might overheat during sterilisation cycles or uncontrolled heating.
Featuring true 3-way mixing control, the Warmup S3 Mixing Unit blends heated water from the primary heating circuit with water from the secondary floor circuits through the manifold. The unit includes an adjustable primary bypass to ensure a minimum flow rate is maintained for any heat source, such as heat pumps. This facilitates the easy commissioning of primary circuits before the underfloor heating (UFH) system is operational. Additionally, it features an adjustable secondary bypass.
The unit is equipped with the Grundfos UPM3 25-70 130 circulator, known for its high efficiency and compliance with EcoDesign requirements. This circulator utilizes a neodymium permanent magnet and a 3-phase ECM stator with six windings. In Constant Pressure Mode, the circulator ensures a constant flow rate through each active circuit, regardless of the number of circuits.
For added convenience, the mixing unit includes a circulator isolation valve. This valve prevents water from bypassing circuits during manifold filling and minimizes water loss during circulator replacement, all without introducing additional flow resistance or noise like check valves.
Temperature control is managed by a capillary actuator, allowing adjustable set points between 20°C and 60°C. This meets the EN1264:4 requirements for 25°C screed commissioning. The actuator features a tamper-resistant adjustable head, which restricts temperature adjustments to a preset limit or locks it in place for security.
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At The Underfloor Heating Store, we strive to make every step of your order as easy and convenient as possible, from finding the right underfloor heating setup to best suit you to taking delivery of your system the very next day.
We're proud to offer free delivery on all of our orders.
Your delivery option for this product is 5-10 working days.
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At The Underfloor Heating Store, our customers have 30 days to upgrade, replace or refund their orders.
Returns
At The Underfloor Heating Store, we want to ensure you are happy with every purchase you make. If you have any issues with your chosen product, whether damaged, faulty or simply an unwanted item, you can simply return what you bought for a refund. Learn more.
Replacements
We take great care in the delivery of all of our products, however, in the event of your delivery arriving damaged or if you notice a manufacturing fault of any kind within 48 hours of delivery, you're within your rights to a replacement. Learn more.
Upgrades
Within 14 days of purchasing from us, you are eligible to upgrade if you deem you want something a little better. Simply send it back to us brand new and we'll happily assist you with an upgrade to your order. Learn more.
At The Underfloor Heating Store, we are committed to providing our customers with high-quality products and outstanding customer service. That's why we offer a comprehensive warranty on all of our underfloor heating products, with a lifetime warranty for our ProWarm range of products.
Our warranties are designed to give you peace of mind and ensure that your underfloor heating system operates reliably for years to come.
At The Underfloor Heating Store, our main priority is customer satisfaction. To cement our commitment to this, we are proud to offer our Underfloor Heating Price Match Promise. If you find a lower price on an identical product anywhere else, we will match it – guaranteed!
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