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On-Demand Hot Water Recirculation Timer

Smart Countdown Control is an on-demand timer for homes with Thermostatic Valves from Watts – Grundfos – Taco and the like.

For use with hot water circulation pumps on multiple dead-end water lines (no dedicated loop).

Smart Countdown Control On-Demand Water Pump Timers for Plastic Thermostatic Valves

The Smart Countdown Control 32  hot water recirculation timer is a simple solution to the on-demand problem for houses that already have a Watts Instant Hot Water System, Grundfos Comfort System, Taco Hot-Link System, or any system that uses the plastic style of thermostatic crossover valve. 

This controller monitors your hot water line and when it senses flow it turns the pump on for a preset amount of time.  The default is 5 minutes but this can easily be configured for up to 15 minutes with the smart phone app. 

Once the system runs for its preset period of time, it will turn the pump off and not run again for a user configurable period of time called the dormant period

The default dormant period is 10 minutes, but can be configured for up to 30 minutes with the smart phone app.This hot water recirculation controller implements Smart Timers for hot water pumps that, when active, will run the system for the countdown period and then go dormant for the dormant period. This way, even during times when the timer is active, the pump will not be running constantly. 

Of course, outside of the timer periods the controller will still run the pump on demand.

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

The Smart Timers™ are set via your Android or iPhone smart device.

It couldn’t be simpler!

This is the easiest way to upgrade a thermostatic system to an on demand hot water system.

These types of systems work well for homes that have multiple dead end runs.  You would install a thermostatic crossover valve at the end of each dead end run and a single pump at the water heater and both runs will heat up.