Smart Thermostatic Control 32 and Maxx-Flow valve(s)

The Smart Thermostatic Control 32 and Maxx-Flow Valve System includes:

• Smart Thermostatic Control 32
• Maxx-Flow crossover valve kit
• NPT Hall Sensor Flow Meter

Only the Smart Thermostatic Control 32 is sold with the Maxx-Flow thermostatic crossover valve that provides the fastest, on-demand, hot water to all locations in your house. The Smart Thermostatic Control 32 satisfies CA Title 24 requirements and is Made in the USA.

The small, plastic valves from Grundfos, Watts, and Taco just don’t have the water flow necessary to quickly heat up the water when you demand it. If you have a system with plastic valves see information on Smart Countdown Control on-demand hot water recirculation timer.

The Smart Thermostatic Control is a demand-sensing hot water recirculation control system designed for homes without a dedicated hot water recirculation loop.  

It works using the Maxx-Flow high flow thermostatic crossover valve which is installed underneath the sink(s) that are furthest from the water heater and a user supplied pump that is installed on the outlet of the hot water heater.  

One Maxx-Flow valve needs to be installed at the end of each dead-end hot water line. If you need to know how many valves you need check this guide.

Rather than running the pump all the time or on a timer as other systems do, the Smart Thermostatic Control 32 waits until it senses hot water being used anywhere in the house and then turns the pump on.  

When the pump runs it pushes water through the Maxx-Flow thermostatic crossover valve from the hot water line to the cold water line.  Once the hot water reaches the thermostatic crossover valve it closes and stops the flow of water.  

The Smart Recirculation Control senses that water has stopped flowing and turns the pump off.  

The controller then goes dormant for a user-configurable period of time so it isn’t switching the pump on immediately after heating the system up (default 10 minutes). 

The Smart Thermostatic Control 32 demand-sensing hot water recirculation control system is configured via a smartphone app with Live Flow™, which shows the flow meter value in real-time. 

The Bluetooth app allows you to easily configure the “on” and “off” flow values independently but tests have shown that the default values work well in most installations. 

The Smart Thermostatic Control 32 is also configurable to run via “Smart Timers”^TM in order to heat the system up on a schedule.  The controller will turn the pump on, allow it to get up to speed, and run it until the flow drops below the “off” value.  It will then go to sleep for the dormant period before testing the system for flow again. 

Of course, the controller will still run the pump on demand, whenever you need hot water, outside of the timer periods.

The “Smart Timers™” are disabled if the controller doesn’t sense any hot water draw within 24 hours.  So if you go on vacation and forget to manually disable the timers, no worries, they will turn themselves off and re-enable as soon as it senses a hot water draw. 

The Smart Timers are set via our Android app for Smart Thermostatic Control 32 or iPhone or iPad app for Smart Thermostatic Control 32 using your smart device. Our app does not collect data on our customers.

Turning any domestic hot water system into an on-demand system couldn’t be simpler!