nJoin Power Module with Class A GFCI
nJoin Power Module Description
Some floor heating jobs are just too large for a single radiant heating thermostat to handle alone. The nJoin power module is here to help you heat those larger projects. The refined and modern-looking nJoin links up to any WarmlyYours thermostat in the nSpiration series (nSpire Touch WiFi, nSpire Touch, nHance, or nTrust) to increase the electrical output in 15 amp increments to allow for heating additional areas or large rooms, like basements, with a single thermostat.
Screw terminals for safe and easy installs
- 3-year warranty
- Built-in self-testing GFCI
- Dual voltage: 120 V and 240 V
- cULus Class A approved
Warranty / Certifications
|Ingress Protection (IPxx) Rating||IP21|
|Warranty||Limited 3-year warranty and lifetime technical support|
|Connection||4 wires, double pole|
|Ground Fault Protection||GFCI, Class A, 5 mA|
|Maximum Current||15 A|
|Maximum Power||1800 W @ 120 V, 3120 W @ 208 V, 3600 W @ 240 V|
|Supply||120 VAC, 208 VAC, 240 VAC (50/60Hz)|
|Installed Depth||0.8125 in|
Documents & Manuals
- TH115-AF-GA-08 SmartStat Installation Manual (English)
- nJoin (USG-4000) Installation Instructions (English)
- nJoin (USG-4000) Wiring Diagram (English)
- Generic Wiring Diagram & Instruction, Integration Kit (English)
- Nest Integration Wiring Diagram and Instructions (English)
- Savant Integration Wiring Diagram and Instructions (English)
- TempZone™ Custom & Standard Mat Wiring Diagram (English)
- WIRING DIAGRAM 120V & 240V Heating Products with PB112D-GA (English)
- Wiring Diagram for TempZone™ Cut & Turn Single Conductor (Multiple rolls) 120V & 240V with SmartStat™, EasyStat™ and Comfort Regulator (English)
- Wiring Diagram for TempZone™ Cut & Turn Twin Conductor (Multiple Rolls) 120V & 240V with SmartStat™, EasyStat™, Comfort Regulator and Power Modules (English)
- nSpire Series Thermostat Wiring Diagram for 120v and 240V Floor Heating Systems (English)
Customer Questions & Answers
nJoin Power Module has 23 Questions and Answers.
While WarmlyYours electric radiant floor heating systems are typically installed by your floor covering contractor, a licensed electrician is recommended for the final thermostat hook-up. With every quote, we provide an Installation Plan layout, together with an electrical plan that has all the info required for the electrician.
How can I determine what I need for my floor heating project and how can I find out what my floor heating system will cost?
You can use the Instant Quote Tool, which gives you many options for your floor heating coverage. Use this interactive tool to design your room online and receive an instant quotation with product recommendations, rough-in and installation kits, cost of your control, etc. Planning your floor heating project is made easy when using our Instant Quote Tool.
Send us your floor plan or fax it to (800) 408-1100 and we will send you a quote, product recommendation and a free custom installation plan for your project.
WarmlyYours’ TempZone™ product is most commonly installed under tile, stone, and marble flooring, but can also be installed under many other popular floor covering options such as hardwood, vinyl and linoleum. We also have our Environ system, which is an electric floor heating product as well and is specially designed for installation under carpet (in the U.S. only), laminate and floating wood. WarmlyYours can accommodate any flooring type with either of the electric radiant floor heating products that we offer. If your flooring type isn't listed here, just give us a call at (800) 875-5285 and we will be happy to discuss it with you.
Please keep in mind that you must check your electric floor heating system with a digital ohmmeter in conjunction with a Circuit Check™. Take an initial reading as soon as you take the product out of the box to verify that it is within -5% / +10% of the values stated on the product’s label. This will give you a basis of comparison for future readings. Take a second reading once you have positioned the system to match your custom installation plan. It is also advisable to take an additional reading in the middle of the tile installation, just to make sure that the Circuit Check™ is doing its job. Then, take a final reading when you are finished with the floor installation and are ready to hook up the thermostat.
The Circuit Check™ is a tool developed by WarmlyYours to give you peace of mind and ensure trouble-free installations. Simply hook up the cold leads to the tool while you position the system to match your custom installation plan.
The Circuit Check™ will continuously monitor the continuity of the circuit during the installation of your system and during the installation of your flooring. The Circuit Check™ beeps immediately when a short in the system is detected, alerting you to a potentially damaged cable in the area you are working, before you lay the tile over the electric floor heating system. The WarmlyYours technical support team is available 24/7 to provide assistance if the alarm sounds, or if you would have any questions during your installation.
Yes, in most cases, an electric floor heating system can be effective as a primary heat source. However, our TempZone™ and Environ™ systems are most commonly used as a secondary heat source, providing floor-to-ceiling radiant heat to any room in your home where you desire more warmth and comfort.
If you are considering electric floor heating for an addition to your home, such as a sunroom where you have no other source of heat, WarmlyYours offers an innovative online tool which calculates approximate heat loss. This tool can help you to determine if a WarmlyYours’ electric radiant floor heating system will provide your desired comfort temperature throughout the year. You can access the Heat Loss Calculator or you can call us at (800) 875-5285 and a Customer Service Representative will make the calculation for you.
View all 23 Questions and Answers
nJoin Power Module achieved an average rating of 4.9 stars with 12 reviews by our customers.
Great customer service
Peter M., Oak Ridge, NJ on 07/08/2022
Great customer service
Anonymous, Mt Pleasant, IA on 06/02/2022
They verified my order before I ordered the products so i got what I needed. Speedy delivery as well
Floor heating for mudroom, kitchen and livingroom
Stefanie, Orillia, ON on 12/06/2021
I love the floor heating from warmlyyours. It was easy to install, the thermostat is easy to handle and overall service from the sales team was excellent. Promptly responded when I had any questions. Lots of information was available over the internet. As well I liked the fact that a technical team send me an email asking me if I needed any help before I even started the project. Instruction how to install are clear and easy to read. I would have loved to give them a 5 star rating but can only give a 4 star as we were a little confused regarding the length of the cables we needed. The drawing and actual size did not match. But Troy and his team were eager and fast to fix the problem. We tried to figure out how much cable we need for each room but the instruction " how to figure it out was really difficult for myself and my contractor who deals mostly with Nuheat ( with them you get a cable/ squarefoot table to see how much you need. I know that it varies but it gives you a better idea ) My contractor loved the little gadget which was send with the order to check if the cable is properly connected. But I thought it was overkill to send me the same gadget for each room . One would have done it and we would have saved a little money and waste. We used an master electrician to connect the system to make sure everything is done in order. Overall I would highly recommend the product. So far so good it works like a charm and it seems to put out the heat we need to be toasty. Thanks WarmlyYours :)))))))))
Excellent service and support
Amit V., Lake Zurich, IL on 07/21/2021
Couldn't have asked for better service. Jennifer worked with me on my project, right from the very first quote and while a lot of things changed through the course of the project, I had excellent support all along, accommodating all the changes and providing prompt support all along. Even with returns that I had to make unfortunately, Jennifer and the team were fully understanding and prompt with the transactions. One of those rare companies that seem to value customer satisfaction more than just making money on each customer in the short run. I plan to install heating in other rooms in the near future and I will undoubtedly make the first call to Jennifer at WarmlyYours.
Great Service and Support
Anonymous, Westfield, NJ on 06/23/2021
Great support, price and outstanding documentation including installation guide (visual and instructions).
WarmlyYours-The name says it all
Larry S., Granby, CT on 06/05/2021
Outstanding! WarmlyYours.com has an excellent website. Qualified personnel assisted on the telephone. Ordering was easy and product arrived as promised. Installation instructions are excellent and the product is very easy to work with. The most important is - yes the floors are warm.
Excellent customer service, very fair pricing and nice system
Matt H., Pittsburgh, PA on 05/16/2021
I was very hesitant at first to use this system because of past problems with other electric floor heat systems. But my sales rep Mary was exceptionally helpful and accessible by phone and email. She guided me and answered all my questions efficiently. She also helped me redesign the wiring layout quickly and effectively due to some changes in our layout. I'm very happy with this system and will definitely use the WarmlyYours Floor system again on my next project.
Joseph R., Spring Grove, IL on 04/10/2021
We installed your flooring back in 5/2012 and recently a power module went out. Contacted your company and the whole process was so easy with your staff. They provided technical support, still had records of our purchasing your heated flooring system, and placing the order for the correct part was easy. Received the part in two days and we are back to nice warm flooring. All persons I interacted with were courteous, knowledgeable just a pleasure to work with. Your staff could provide lessons to others on how to respond to customers.
Tsuri M., Bronx, NY on 02/15/2021
Amazing product. And great customer service
Excellent Customer Service - Excellent Product
Louise M., Moose Jaw, SK on 02/15/2021
WarmlyYours was great to work with start to finish. They always got back to me quickly making sure I understood the product and install. I would put this floor heat down again in a heartbeat!!