Spine Valve DN25 is a smart, remotely controlled heating system for temporary site heating. The system regulates heating water flow based on measured room temperature, so heat distribution is precise and energy-efficient. Integrated wireless RuuviTag sensors and remote alarms enable real-time monitoring and data logging for the whole project.

Who is Spine Valve DN25 for?

Spine Valve is designed for temporary heating, drying and winter heating on construction sites — situations where heating can’t be, or there’s no time to, monitor by hand.

The system is especially suited to sites where heating is kept running just in case, without measured data on conditions. Spine Valve brings measurement data and control into the same view, so heat goes where it’s actually needed.

How Spine Valve DN25 controls heating

• Control is based on measured room temperature, not a schedule or a guess
• The valve automatically regulates heating water flow
• Heat is directed to where demand is greatest
• More even temperature distribution across the whole site
• Lower energy consumption
• Better control of conditions for drying and winter heating

Wireless RuuviTag sensors track conditions

Two wireless RuuviTag sensors attach with a magnet directly to the heater — no fixed cabling is needed, and commissioning is fast.

• Sensor on the inlet air side, behind the filter
• Sensor on the outlet air side
• Continuous comparison of inlet and outlet air
• Real-time verification of actual output
• Continuous condition monitoring and data logging for the whole project for documentation and reporting

Spine Valve DN25 – technical data

• Supply voltage: 16 A 400 V
• Outputs: 230 V and 16 A 400 V
• Valve: DN25, motorised Belimo
• Connection: 1″ Camlock male and female
• Includes: control unit, motorised valve, 2x RuuviTag sensors
• Warranty: 2 years
• Country of origin: Finland

Does this configuration suit your site? Add the product to the quote cart at the top of the page and we’ll send you a quote.

Alarms and remote monitoring

Alarms arrive by text message and email immediately, and thresholds are configurable per site. Spine Valve alerts you to, among other things:

• Temperature deviations
• Device shutdown
• Connection loss
• Threshold exceeded

Remote monitoring improves reliability and minimises deviations that would otherwise go unnoticed — an issue is caught before it affects the drying schedule.

Installation and commissioning

The valve is installed on the flow or return line, and the heater’s output can be looped through the unit. The design is compact and site-ready, and commissioning is straightforward.

Commissioning happens in the Spine app: the heating plan is prepared in the office beforehand, the heater is selected on the digital floor plan, and the device is scanned into service with a QR code. The device pairing happens automatically.

Made in Finland

Spine Valve DN25’s country of origin is Finland, and the product carries a 2-year warranty.

Spine Valve DN25 on the worksite

Spine is a remote monitoring system. Measurement data is sent to the cloud service where it can be viewed on any device – nobody needs to travel to the site to read a meter.

Consumption readings are transferred once a day together with hourly consumption history. Critical alarms, however, are sent immediately, so a leak does not wait for the next transfer.

The same cloud service gathers every Spine unit on the site into one view, however many measuring points there are.

Outputs: 230 V ja 16 A 400 V. Count the work points before choosing – the number of outputs decides how many machines one board can feed.

Where the product is used

Typical sites are construction projects, renovations, industrial maintenance and event power. What they share is that the electrical supply is temporary and the conditions are demanding.

Temporary does not mean lighter requirements. Site equipment is exposed to dust, moisture, moving and mechanical stress in a way that fixed installations never are.

Check the load distribution between phases during use. Uneven distribution overloads one phase while the others run half empty, and the usual symptom is a fuse that keeps tripping.

How to choose the right model

The equipment is chosen by rated current and outputs. Start by calculating the simultaneous load and the output types needed, and choose the model on that basis.

Other models of the same type are Spine-DN25 water meter, Spine-DN32 water meter, Spine-DN40 water meter.

You can see the full range in the product group, and read about real-time monitoring on the Spine page.

Practical notes for use

Winter brings requirements of its own. Condensation forms when cold equipment is brought into the warm, and moisture inside the enclosure is a common reason for an RCD tripping with no visible cause.

Mark the equipment with the site details and keep a record of what is fed from where. On a site with several contractors that saves time at every fault-finding.

RCD protection is mandatory for socket outputs on a site. Its operation is tested with the test button at commissioning and at regular intervals afterwards.

Spine Valve DN25 – installation and maintenance

Installation and connection work is carried out by a qualified electrician. The equipment must be made dead before connection work, and the absence of voltage verified by measurement.

Place the equipment on level ground and so that it can be reached freely even when the site fills up with material. Material stacked in front blocks both use and emergency isolation.

Test the RCD with its test button at commissioning and at regular intervals afterwards. The test takes a second and is still almost always forgotten.

Check the joints and fixings regularly during use. A joint that heats up is a sign of a fault and should be corrected before the fault spreads.

Safety and inspections

Site electrical installations are subject to the same requirements as fixed installations, and some of them are stricter. The equipment has to withstand moving, dust, moisture and mechanical stress for the whole project.

The installation is inspected at commissioning and regularly during use: enclosure, joints, the operation of the protective devices and the fact that live parts cannot be reached.

Damaged equipment is not repaired improvised on site. A cracked enclosure, a burnt terminal or a damaged socket is replaced – on a site a temporary repair almost always becomes permanent.

Document the configuration and any changes made. Up-to-date information on outputs and protection speeds up fault-finding and the next inspection.

Delivery and sizing help

We deliver the equipment together with the cables and the rest of the site power supply in one delivery, so the set is complete when it arrives on site.

Describe the whole site in your request for quotation: supply power, the outputs needed and the estimated length of the project. We size the set on that basis.

Use the product number 501340001 when ordering and when asking about spare parts. It identifies this exact model, which matters when the same series comes in several sizes.

We also help with the sizing. If you are unsure about the size or the number of outputs, ask us – equipment sized wrong costs more than equipment chosen right the first time.

Frequently asked questions

Where is Spine Valve DN25 installed?

The valve is installed on the heater’s flow or return line with a 1″ Camlock connection, and the heater’s output can be looped through the unit.

Do the sensors need cabling?

No. The two included RuuviTag sensors are wireless and attach with a magnet directly to the heater, so no fixed cabling is needed.

How does commissioning work?

Commissioning is done in the Spine app: the heater is created and placed on the floor plan in advance, and the installer scans the device into service with a QR code on site. The device pairing happens automatically.

What’s included in the package?

The package includes the Spine control unit, a motorised Belimo valve (DN25) and two RuuviTag sensors.

What is the product’s part number (MPN)?

The part number, or MPN, is 501340001. The same code serves as the product’s SKU, so you can use it in orders and quote requests.

Where is Spine Valve DN25 manufactured?

The product’s country of origin is Finland.

What outputs does the product have?

Outputs: 230 V ja 16 A 400 V.

Is a separate communication device needed?

No. Data transfer is built into the unit.

Do several measuring points appear in one view?

Yes. The same cloud service gathers all Spine units on the site into one view.

What is the product number?

The product number is 501340001. Use it in requests for quotation and spare part enquiries.

Didn’t find the answer to your question? Add the product to the quote cart and our sales team will help — or open the chat in the bottom-right corner of the page.

Request a quote for Spine Valve DN25

Also take a look at other Spine heating and conditions solutions or the whole Spine product family.

Once you know the right configuration, add it to the quote cart. You can collect several products in the cart and send the whole list at once, so you get a quote for the entire package with a single request.

The requirements for electrical installations on worksites are explained in more detail on the Tukes website.

Request a quotation

Add to the quotation basket and send us your request – we will confirm availability and delivery time. You can see the full range in the product group.