These are PDF installation guides for older Smart Recirculation Control
products offered by Leridian Dynamics, Inc. Our latest products and
their installation guides can be found from the main menu under "Smart Controllers".
For any questions or concerns about your Controlled Hot Water Recirculation Pump installation, be sure to contact customer support. We are happy to assist.
QUICKSTART GUIDE SEE PAGE 2
Congratulations on purchasing the most advanced microprocessor-controlled, hot water recirculation pump
controller made. This system is designed to run the recirculation pump only when you need it thus saving both
water and energy. It is designed and built with pride in the USA to provide years of service and savings.
Contents:
(1) Smart Recirculation Control 32 with RJ-45 connector
(2) Temperature Sensors with RJ-14 connectors and RJ-14 Splitter
(1) 3/4” or 1” NPT Flow Sensor with JST connector
(1) Wiring Harness with RJ-45, RJ-14 and JST connectors
Parts not included: The following items are needed for the installation but are not included.
→ Electrical Tape
→ PTFE (Teflon) Tape
→ Wire fasteners for securing wiring to the wall
If this test fails, disconnect all connections and inspect the wires to ensure they are not broken or loose and that the pins in the Y connector are not bent. Reconnect all connections ensuring they snap together and re-test. If this test still fails, contact customer support at support@smartrecirculationcontrol.com or 831-761-8659.
If the pump fails to turn on or fails to stay on past the initial 10 seconds or continues to run for longer than 5 minutes and the piping feels hot, see Trouble Shooting on page 7.
GREEN LED: will blink 3 times when first plugged in to indicate the unit is functioning correctly
GREEN LED: solid on when a timer is active and pump is not running
RED LED: fast blinking indicates that one or both of the temperature sensors are not connected properly
RED LED: solid on when the pump is running whether due to a timer or due to demand
BLUE LED: solid on when connected via the smartphone app
NO LED: normal behavior after initial boot up – no timer is active and the pump is not running
Please read over the following detailed instructions. If you are not comfortable with any part of them please contact a licensed plumber to perform the installation.
Prior to installation, you must perform the system test at the beginning of the Quickstart Guide on page 2.
Note 1: If installing on PEX you will need to plumb a short section of copper pipe to which to attach the temperature sensors. PEX is a pretty good insulator and will cause a lag in the controller sensing the temperature change. Note 2: Temperature sensor MUST be placed before the return line T’s back into the cold water supply line.
The Smart Recirculation Control 32 can be used simply as an on-demand controller for your recirculation pump or, once configured using either an iPhone or Android smart device, it can be configured via timers to keep the recirculation loop hot between specific times of day and on specific days of the week (up to 10 timers can be set). Even when a timer is active it only runs the pump until the recirculation loop has heated up and then it shuts the pump off while continuing to monitor the recirculation loop temperature.
The app uses Bluetooth in order to communicate with the controller so you need to be sure that Bluetooth is enabled on your smart device. The app can be downloaded for free from either the Apple App Store or from Google Play by searching for “Smart Recirculation Control”. There is no need to “pair” the Bluetooth device, running the app will find and connect to the Smart Recirculation Control 32 and display the timers currently set. The blue LED on the controller will illuminate when the app is connected. If the blue LED doesn’t illuminate, press the menu button at the top right of the app and select “Scan for Recirc Control”. Note: We have noticed that some Android devices can sometimes have a hard time connecting so if it fails to connect after pressing the “Scan for Recirc Control” menu item a couple of times, try restarting the app.
Once connected you can tap any of the existing timers to edit or delete them or press the Add Timer button to add a new one. The real-time clock in the Smart Recirculation Control 32 is set when you connect to the controller with your smartphone. When a timer is active the green LED will be lit. When the Smart Recirculation Control 32 turns the pump on, the LED will change from green to red. When the loop is up to temperature the pump will shut off and the LED will change back from red to green.
When connected to the controller via the smartphone app, the blue LED will always be lit. To know if the pump is running or a timer is active, select “Live Data” from the menu and it will provide the status of the pump and timers.
The Smart Recirculation Control 32 has a built-in power backup that will keep the clock’s time for approximately 48hours after which the clock will lose its time and the controller’s timers won’t function until the time is set by running the app and connecting to the Smart Recirculation Control 32.
The clock does not adjust for daylight savings time so when the time changes you will need to connect to the SmartRecirculation Control 32 with your smart device and the time will be set to the time of your smart device.
The app also allows for controlling all the settings of the firmware of the Smart Recirculation Control 32. To access the settings press the menu button in the top right of the app and select “Settings”. There will be a list of basic settings and the ability to expand the settings to “Show Advanced Settings”.
Sensitivity – The sensitivity setting allows the user to set how many pulses of the flow meter are required to turn the controller on. The default value is 20 which is fine for most installations. If you find that the controller is not turning on when you turn a faucet on and off, you would decrease this value to make the controller more sensitive to flow(require fewer pulses to turn the controller on). Correspondingly, if you find that the controller is turning on when there is no timer active and no hot water being drawn, you would increase this number to make the unit less sensitive to fluctuations in flow (require more pulses to turn the controller on).
Temperature Range – The temperature range setting allows the user to set the temperature differences that cause the controller to turn the pump on and off. When the controller senses flow, it checks to see if the temperature difference between the two temperature sensors is greater than the large difference and if it is, it turns the pump on. It runs the pump while reading the temperature sensors until the temperature difference is less than or equal to the small difference. The default large difference is 8 F deg and the default small difference is 5 Fdeg. These values work fine for most installations, however, if you find that the controller is turning on and never turning off, you should increase the value of the small difference. See Trouble Shooting page 8, item 4.
Timers Enabled – This switch manually enables and disables the timers. This can be used to turn the timers off when you go away on vacation or to simply turn them off if you just want to use the on-demand feature of the controller. The Smart Recirculation Control 32 implements “Smart Timers” which, regardless of this setting, will automatically disable themselves if no hot water usage is detected within 24 hours. The timers are re-enabled as soon as hot water flow is detected.
Dormant Interval – The dormant interval is the number of minutes that the controller lies dormant after sensing flow and heating up the loop. As long as there is hot water flow within the dormant interval, it is assumed that the temperature sensor on the outlet of the water heater has an accurate temperature reading and therefore the pump doesn’t need to run unless the temperature difference gets greater than the large difference specified in the Temperature Range setting. Therefore when flow is detected within the dormant interval, the dormant interval timer is reset. The dormant interval is also the number of minutes that the controller waits when a timer is active between pump runs. If you want the pump to turn on more quickly while a timer is active or more quickly between pump runs when you draw hot water you would reduce this value. This value is set to 10 minutes which is fine for most installations.
Flow Meter Delay – The flow meter delay is the amount of time in hundredths of a second during which time the controller counts the number of pulses that occur in the flow meter. If the number of pulses is above the sensitivity threshold then the controller deems that there is flow in the hot water line. This value is set to 75 hundredths of a second which is fine for most installations.
Initial Pump Run Time – The initial pump run time is the number of seconds that the pump runs when it first senses flow if there hasn’t been flow within the dormant period. This is to ensure that water from the water heater makes it to the first temperature sensor in order to obtain an accurate temperature comparison between the two temperature sensors. When a timer is active the pump will turn on every dormant interval for the length of the initial pump run time in order to check the temperature of the recirculation loop. This value is set to 10 seconds which is fine for most installations. If the temperature sensor for the hot water outlet is installed some distance from the water heater this value may have to be increased.
Reset to Factory – This will reset the Smart Recirculation Control 32 back to the factory defaults. If you experience strange behavior of the controller, resetting to the factory defaults would be a good thing to try to resolve the issue. This will also reset all the timers back to the 4 factory default timers so if you have changed the timers you will need to reset them after performing a factory reset. You must type “yes” when prompted in order for the factory reset to take place.
The firmware of the Smart Recirculation Control 32 can be updated via the smart phone app. To check if there is new firmware available go to the menu and select Firmware. If there is new firmware available it will be displayed and the selection will be enabled. Select the firmware and click the “Update Firmware” button. The update can take up to 5 minutes to complete. Do not allow the application to go to the background or the phone to sleep while the firmware update is running or the update will fail. The system is designed to only switch to the new firmware if the update is successful so if this does happen simply attempt the firmware update again.
There is an option on this screen to “Show All Firmware Versions” which will display the firmware from our entire product line. The sensor requirements for the different firmware versions are different so updating to a different product without understanding the implications may provide unexpected results. Please see our web site for a description of the different products.
ISSUE: The Smart Recirculation Control 32 is not able to get temperature information from the temperature sensors.
RESOLUTION: Unplug the Smart Recirculation Control 32 from the wall, disconnect the connection to the temperature sensors, and disconnect the wiring harness from the Smart Recirculation Control 32. Inspect the pins in the connectors and ensure they are not bent or broken. Inspect the wires connecting to the connectors and ensure they are not broken or loose. Reconnect the temperature sensors ensuring they are firmly connected and snapped together. Plug the wiring harness back into the Smart Recirculation Control 32. Plug the Smart Recirculation Control 32 back into the wall outlet.
ISSUE 1: If the controller has run within the dormant interval, the pump won’t automatically turn on when flow is detected.
RESOLUTION 1: Unplug the controller from power for 10 seconds and plug it back in. This will reset the controller and it will now turn on automatically when it detects flow. Turn a hot water faucet fully on for 1 second. If it still doesn’t turn on see ISSUE 2.
ISSUE 2: The sensitivity value is set too high for the controller to detect the flow provided by your faucet.
RESOLUTION 2: Open the smart phone app and go to the menu and select “Live Data”. This will show you what the controller is sensing. Turn a hot water faucet fully on for and watch the flow value. If it goes greater than 20 then the pump will turn on. If it doesn’t go greater than 20 then you will need to reduce the sensitivity value to be less than the maximum value you observed. For example, if the Flow Meter value went to 15, then set your sensitivity to 13 and try this test again.
ISSUE: The controller isn’t sensing a temperature difference greater than the large difference that is set in the Temperature Range setting (default 8 F degrees).
RESOLUTION 1: Ensure that the temperature sensor is securely connected to the copper piping coming out of the water heater as close to the water heater as reasonable. Typically this will be after the hookup line. If it is loose, re-secure it in place with electrical tape, cover it with insulation, and test it again. If it still won’t stay on see RESOLUTION 2.
RESOLUTION 2: This is typically a situation where it is taking longer than 10 seconds for the pump to get hot water out to the location of the first temperature sensor and causes the temperature difference to be greater than the large difference that is set in the Temperature Range setting (default 8 F degrees). To test this, after the pump has run for the initial 10 seconds, turn the hot water on again for a few seconds. If the pump kicks on and starts running then you need to increase the Initial Pump Run Time under Advanced Settings. The default is 10 seconds. I would recommend increasing this by 5 seconds at a time and test again when the system is cold. You can also view the “Live Data”TM in the app which displays live temperature values and differences to see what is actually being sensed.
ISSUE: The controller isn’t sensing the temperature difference dropping below the small difference that is set in the Temperature Range setting (default 5 F degrees).
RESOLUTION 1: Ensure that the temperature sensor is securely connected to the copper piping on the return line and that it is connected before it T’s into the cold water feed into the water heater. If it is loose, re-secure it in place with electrical tape, cover it with insulation, and test it again. If it still won’t stay on see RESOLUTION 2.
RESOLUTION 2: Open the smartphone app and go to the menu and select “Live Data”. It will display the temperature values and the difference. If this difference is greater than the small temperature difference in the Temperature Range setting (default 5 F degrees) then the pump won’t turn off. Go into the Settings →Temperature Range and increase the small temperature difference value to be greater than the value observed in “Live Data” and the pump will turn off. This typically happens in homes where the hot water line isn’t well insulated and the water loses temperature as it recirculates throughout the home. Do your best to insulate all hot water pipes that you can reasonably access. It will make the system perform better and it will save you money on energy bills. Note: You may also need to increase the large difference value. If you were to make these values the same the pump would cycle on and off often. It is recommended that these values be at least 3 degrees apart.
ISSUE: Pressure spikes in the cold water supply line caused by abrupt turning off of the cold water (for instance when a toilet fills) or caused by fluctuations in the feed from the utility company can cause the Smart Recirculation Control 32 to trigger the hot water recirculation pump to turn on.
RESOLUTION: The sensitivity value of the Smart Recirculation Control 32 is too low and should be adjusted higher.
If you need further support please contact:
Leridian Dynamics, Inc. support@smartrecirculationcontrol.com or 831-761-8659
Congratulations on purchasing the most advanced microprocessor-controlled, hot water recirculation pump controller made. This system is designed to run the recirculation pump only when you need it thus saving both water and energy. It is designed and built with pride in the USA to provide years of service and savings.
Contents:
1 Smart Thermostatic Control 32 with RJ-45 connector
1 ¾” or 1” NPT Flow Sensor with JST connector
1 Wiring Harness with R-J45 & JST connectors
Items NOT included: The following items are needed for the installation but are not included.
→ PTFE (Teflon) Tape
→ Wire fasteners for securing wiring to the wall
If this test fails, disconnect all connections and inspect the wires to ensure they are not broken or loose and that the pins are not bent. Reconnect all connections ensuring they snap together tightly and re-test. If this test still fails, contact customer support at support@smartrecirculationcontrol.com or 831-761-8659.
If the pump fails to turn on or fails to stay on past the initial 5 seconds or continues to run after you have hot water at the faucet(s) where the crossover valve(s) is (are) installed, see Trouble Shooting on page 7.
GREEN LED: will blink 3 times when first plugged in to indicate the unit is functioning correctly.
GREEN LED: solid on when a timer is active and the pump is not running.
RED LED: solid on when the pump is running whether due to a timer or due to demand.
BLUE LED: solid on when connected via the smartphone app.
NO LED: normal behavior after initial boot up – no timer is active and the pump is not running.
Please read over the following detailed instructions. If you are not comfortable with any part of them please contact a licensed plumber to perform the installation.
Prior to installation, you must perform the system test at the beginning of the Quickstart Guide on page 2.
The Smart Thermostatic Control 32 can be used simply as an on-demand controller for your recirculation pump or, once configured using either an iPhone or Android smart device, it will also work as an advanced timer keeping the hot water line hot between specific times of day and on specific days of the week (up to 10 timers can be set). Even when a timer is active it only runs the pump until the crossover valve closes while continuing to monitor the flow demand. The app uses Bluetooth in order to communicate with the controller so you need to be sure that Bluetooth is enabled on your smart device. The app can be downloaded for free from either the Apple App Store or from Google Play by looking up “Smart Recirculation Control”.
There is no need to “pair” the Bluetooth device, running the app will find and connect to the Smart Thermostatic Control 32 and display the timers currently set. The blue LED on the controller will illuminate when the app is connected. If the blue LED doesn’t illuminate, press the menu button in the top right of the app and select “Scan for Recirc Control”. Note: We have noticed that some Android devices can sometimes have a hard time connecting so if it fails to connect after pressing the “Scan for Recirc Control” menu item a couple of times, try restarting the app.
Once connected you can tap any of the existing timers to edit or delete them or press the Add Timer button to add a new one.
The real-time clock in the Smart Thermostatic Control 32 is set when you connect to the controller with your smartphone. When a timer is active the green LED will light. When the Smart Thermostatic Control 32 turns the pump on, the LED will change from green to red. When the hot water line is up to temperature and the thermostatic crossover valve closes, the pump will shut off and the LED will change back from red to green.
When connected to the controller via the smartphone app, the blue LED will always be lit. To know if the pump is running or a timer is active, select “Live Flow”TM from the menu and it will provide the status of the pump and timers.
The Smart Thermostatic Control 32 has a built-in power backup that will keep the clock’s time for approximately 48hours after which the clock will lose its time and the controller’s timers won’t function until the time is set by running the app and connecting to the Smart Thermostatic Control 32.
The clock does not adjust for daylight savings time so when the time changes you will need to connect to the SmartThermostatic Control 32 with your smart device and the time will be set to the time of your smart device.
The app also allows for controlling all the settings of the firmware of the Smart Thermostatic Control 32. To access the settings press the menu button in the top right of the app and select “Settings”. There will be a list of basic settings and the ability to expand the settings to “Show Advanced Settings”.
Sensitivity – The sensitivity setting allows the user to set how many pulses of the flow meter are required to turn the controller on and off. When the controller senses flow greater than the high value it turns the pump on. When the flow falls below the low value, the controller turns the pump off. The default on value is 20 and off value is 5 which is fine for most installations. If you find that the controller is not turning on when you turn a faucet on and off, see trouble Shooting on page 7, item 1. If the controller isn’t turning off when the plumbing is hot, see Trouble Shooting on page 7, item 3.
Timers Enabled – This switch enables and disables the timers. This can be used to turn the timers off when you go away on vacation or to simply turn them off if you just want to use the on-demand feature of the controller. The Smart Thermostatic Control 32 implements “Smart Timers”TM which, regardless of this setting, will automatically disable themselves if no hot water usage is detected within 24 hours. The timers are re-enabled as soon as hot water flow is detected.
Dormant Interval – The dormant interval is the number of minutes that the controller lies dormant after having run the pump and gotten the hot water line up to temperature. This setting prevents fast cycling of the pump when hot water is being turned on and off over a short period of time. This is also the number of minutes that the controller waits when a timer is active after turning the pump off before turning the pump on again to check if the thermostatic valve has opened. If you want the pump to turn on more often while a timer is active or more quickly between pump runs when you draw hot water you would reduce this value. This value is set to 10 minutes which is fine for most installations.
Flow Meter Delay – The flow meter delay is the amount of time in hundredths of a second during which time the controller counts the number of pulses that occur in the flow meter. If the number of pulses is above the sensitivity threshold then the controller deems that there is flow in the hot water line. This value is set to 75 hundredths of a second which is fine for most installations.
Initial Pump Run Time – The initial pump run time is the number of seconds that the pump runs when it first senses flow if the pump hasn’t run in the last dormant interval. This is to ensure that the pump has time to get up to speed and start moving water through the thermostatic valve before checking the flow value. When a timer is active the pump will turn on every dormant interval for the length of the initial pump run time in order to check the thermostatic valve. This value is set to 5 seconds which is fine for most installations, but some pumps have electronic controls requiring longer for the pump to start running once power is connected so this value may have to be increased.
Reset to Factory – This will reset the Smart Thermostatic Control 32 back to the factory defaults. If you experience strange behavior of the controller, resetting to the factory defaults would be a good thing to try to resolve the issue. This will also reset all the timers back to the 4 factory default timers so if you have changed the timers you will need to reset them after performing a factory reset. You must type “yes” when prompted in order for the factory reset to take place.
The firmware of the Smart Countdown Control 32 can be updated via the smartphone app. To check if there is new firmware available go to the menu and select Firmware. If there is new firmware available it will be displayed and the selection will be enabled. Select the firmware and click the “Update Firmware” button. The update can take up to 5 minutes to complete. Do not allow the application to go to the background or the phone to sleep while the firmware update is running or the update will fail. The system is designed to only switch to the new firmware if the update is successful so if this does happen simply attempt the firmware update again.
There is an option on this screen to “Show All Firmware Version” which will display the firmware from our entire product line. The sensor requirements for the different firmware versions are different so updating to a different product without understanding the implications may provide unexpected results. Please see our web site for a description of the different products.
ISSUE 1: If the controller has run within the dormant interval, the pump won’t automatically turn on when flow is detected.
RESOLUTION 1: Unplug the controller from power for 10 seconds and plug it back in. This will reset the controller and it will now turn on automatically when it detects flow. Turn a hot water faucet fully on for 1 second and then turn it off. If it still doesn’t turn on see ISSUE 2.
ISSUE 2: The high sensitivity value is set to high for the controller to detect the flow provided by the faucet.
RESOLUTION 2: Open the smartphone app and go to the menu and select “Live Flow”TM. This will show you what the controller is sensing. Turn a hot water faucet fully on and watch the flow value. If it goes greater than 20 then the pump will turn on. If it doesn’t go greater than 20 then you will need to reduce the high sensitivity setting to be less than the maximum value you observed. For example, if the Flow Meter value went to 15, then set your high sensitivity to 13 and try this test again.
ISSUE 1: The thermostatic crossover valve(s) is (are) already heated up and aren’t allowing flow.
RESOLUTION 1: Check the temperature of the water at the location of the crossover valve(s) and see if the water is 95F. If it is, wait for the water to cool off and test it again. If it is not 95F, see ISSUE 2.
ISSUE 2: The low sensitivity value is set too high and the controller isn’t registering enough flow to keep the pump running.
RESOLUTION 2: Unplug the controller from power, wait 10 seconds, and plug it back in. Open the smart phone app and go to Settings → Advanced Settings and set the Initial Pump Run Time to 30 seconds. Go back to the menu and select “Live Flow”TM. Turn a hot water faucet fully on for 1 second and then turn it off. The pump will now run for 30 seconds and you should see the flow value that the pump is pushing through the thermostatic crossover valve(s). If this value is 0 then the crossover valve(s) is (are) closed and not allowing flow. If this value is not 0, then set the low value in Settings → Sensitivity to be less than this value and the pump will continue to run when triggered. Don’t forget to go back to Settings → Advanced Settings and set the Initial Pump Run Time back to 5 seconds.
ISSUE: The thermostatic crossover valve(s) is (are) not up to 95F and therefore still allowing flow.
RESOLUTION: Check the temperature of the water at the location of the crossover valve(s) and see if the water is 95F. If it is 95F, see ISSUE 2.
ISSUE 2: The low sensitivity value is set below the flow value the controller is registering and therefore keeping the pump running.
RESOLUTION 2: Open the smart phone app and go to the menu and select “Live Flow”TM. The flow value that the controller is registering will be displayed. Go into Settings → Sensitivity and set the low value to be greater than this value and the pump will turn off.
ISSUE: Pressure spikes in the cold water supply line caused by abrupt turning off of the cold water (for instance when a toilet fills) or caused by fluctuations in the feed from the utility company can cause the Smart Thermostatic Control 32 to trigger the hot water recirculation pump to turn on.
RESOLUTION: The high sensitivity value is too low. Open the smartphone app and go to the menu and go into Settings → Sensitivity and set the high value higher by 5 and see if the issue persists.
If you need further support please contact:
Leridian Dynamics, Inc. support@smartrecirculationcontrol.com or 831-761-8659
QUICKSTART GUIDE SEE PAGE 2
Congratulations on purchasing the most advanced microprocessor controlled, hot water recirculation pump controller made. This system is designed to run the recirculation pump only when you need it thus saving both water and energy.It is designed and built with pride in the USA to provide years of service and savings.
Contents:
(1) Smart Thermostatic Control 32 with RJ-45 connector
(1) Temperature Sensor with RJ-14 connector
(1) ¾” or 1” NPT Flow Sensor with JST connector
(1) Wiring Harness with RJ-45, RJ-14 & JST connectors
Needed: The following items are needed for the installation, but are not included.
Electrical Tape PTFE(Teflon) Tape
Wire fasteners for securing wiring to the wall
If this test fails, disconnect all connections and inspect the wires to ensure they are not broken or loose and that thepins in the RJ-14 connector are not bent. Reconnect all connections ensuring they snap together and re-test. If this test still fails, contact customer support at support@smartrecirculationcontrol.com or 831-761-8659.
If the pump fails to turn on or fails to stay on past the initial 5 seconds or continues to run after you have hot water at the faucet(s) where the crossover valve(s) is (are) installed, see Trouble Shooting on page 7.
GREEN LED: will blink 3 times when first plugged in to indicate the unit is functioning correctly
GREEN LED: solid on when a timer is active and pump is not running
RED LED: fast blinking indicates that the temperature sensor is not connected properly
RED LED: solid on when the pump is running whether due to a timer or due to demand
BLUE LED: solid on when connected via the smart phone app
NO LED: normal behavior after initial boot up – no timer is active and pump is not running
Please read over the following detailed instructions. If you are not comfortable with any part of them please contact a licensed plumber to perform the installation.
Prior to installation you must perform the system test at the beginning of the Quickstart Guide on page 2.
Note: If installing on PEX you will need to plumb in a short section of copper pipe to which to attach thetemperature sensor. PEX is a pretty good insulator and will cause a lag in the controller sensing the temperature.
The Smart Thermostatic Control 32 can be used simply as an on demand controller for your recirculation pump or, once configured using either an iPhone or Android smart device, it will also work as an advanced timer keeping the hot water line hot between specific times of day and on specific days of the week (up to 10 timers can be set). Evenwhen a timer is active it only runs the pump until the crossover valve closes while continuing to monitor the flow demand. The app uses Bluetooth in order to communicate with the controller so you need to be sure that Bluetooth is enabled on your smart device. The app can be downloaded for free from either the Apple App Store or from Google Play by looking up “Smart Recirculation Control”.
There is no need to “pair” the Bluetooth device, running the app will find and connect to the Smart Thermostatic Control 32 and display the timers currently set. The blue LED on the controller will illuminate when the app isconnected. If the blue LED doesn’t illuminate, press the menu button in the top right of the app and select “Scan for Recirc Control”. Note: We have noticed that some Android devices can sometimes have a hard time connecting so if it fails to connect after pressing the “Scan for Recirc Control” menu item a couple of times, try restarting the app.
Once connected you can tap any of the existing timers to edit or delete them or press the Add Timer button to add a new one.
The real time clock in the Smart Thermostatic Control 32 is set when you connect to the controller with your smartphone. When a timer is active the green LED will light. When the Smart Thermostatic Control 32 turns the pump on, the LED will change from green to red. When the hot water line is up to temperature and the thermostatic crossover valve closes, the pump will shut off and the LED will change back from red to green.
The Smart Thermostatic Control 32 has a built in power backup that will keep the clock’s time for approximately 24hours after which the clock will lose its time and the controller’s timers won’t function until the time is set by running the app and connecting to the Smart Thermostatic Control 32.
The clock does not adjust for daylight savings time so when the time changes you will need to connect to the SmartThermostatic Control 32 with your smart device and the time will be set to the time of your smart device.
The app also allows for controlling all the settings of the firmware of the Smart Thermostatic Control 32. To accessthe settings press the menu button in the top right of the app and select “Settings”. There will be a list of basic settings and the ability to expand the settings to “Show Advanced Settings”.
Sensitivity – The sensitivity setting allows the user to set how many pulses of the flow meter are required to turn thecontroller on and off. When the controller senses flow greater than the high value it turns the pump on. When the flow falls below the low value, the controller turns the pump off. The default on value is 20 and off value is 5 which is fine for most installations. If you find that the controller is not turning on when you turn a faucet on and off, seeTrouble Shooting on page 7, item 2. If the controller isn’t turning off when the plumbing is hot, see Trouble Shooting on page 8, item 4.
Timers Enabled – This switch enables and disables the timers. This can be used to turn the timers off when you go away on vacation or to simply turn them off if you just want to use the on demand feature of the controller. TheSmart Thermostatic Control 32 implements “Smart Timers”TM which, regardless of this setting, will automatically disable themselves if no hot water usage is detected within 24 hours. The timers are re-
enabled as soon as hot water flow is detected.
Dormant Interval – The dormant interval is the number of minutes that the controller lies dormant after having run the pump and gotten the hot water line up to temperature. This setting prevents fast cycling of the pump when hot water is being turned on and off over a short period of time. This is also the number of minutes that the controller waits when a timer is active after turning the pump off before turning the pump on again to check if the thermostaticvalve has opened. If you want the pump to turn on more often while a timer is active or more quickly between pump runs when you draw hot water you would reduce this value. This value is set to 10 minutes which is fine for most installations.
Flow Meter Delay – The flow meter delay is the amount of time in hundredths of a second during which time the controller counts the number of pulses that occur in the flow meter. If the number of pulses is above the sensitivity threshold then the controller deems that there is flow in the hot water line. This value is set to 75 hundredths of a second which is fine for most installations.
Initial Pump Run Time – The initial pump run time is the number of seconds that the pump runs when it first senses flow if the pump hasn’t run in the last dormant interval. This is to ensure that the pump has time to get up to speed and start moving water through the thermostatic valve before checking the flow value. When a timer is active the pump will turn on every dormant interval for the length of the initial pump run time in order to checkthermostatic valve. This value is set to 5 seconds which is fine for most installations, but some pumps have electronic controls requiring longer for the pump to start running once power is connected so this value may have to be increased.
Reset to Factory – This will reset the Smart Thermostatic Control 32 back to the factory defaults. If you experience strange behavior of the controller, resetting to the factory defaults would be a good thing to try to resolve the issue.This will also reset all the timers back to the 4 factory default timers so if you have changed the timers you will needto reset them after performing a factory reset. You must type “yes” when prompted in order for the factory reset to take place.
The firmware of the Smart Countdown Control 32 can be updated via the smart phone app. To check if there is new firmware available go to the menu and select Firmware. If there is new firmware available it will be displayed and the selection will be enabled. Select the firmware and click the “Update Firmware” button. The update can take up to 5 minutes to complete. Do not allow the application to go to the background or the phone to sleep while the firmware update is running or the update will fail. The system is designed to only switch to the new firmware if the update is successful so if this does happen simply attempt the firmware update again.
There is an option on this screen to “Show All Firmware Version” which will display the firmware from our entireproduct line. The sensor requirements for the different firmware versions are different so updating to a differentproduct without understanding the implications may provide unexpected results. Please see our web site for a description of the different products.
ISSUE: The Smart Thermostatic Control 32 is not able to get temperature information from the temperature sensor.
RESOLUTION: Unplug the Smart Thermostatic Control 32 from the wall, disconnect the connection to the temperature sensor, disconnect the wiring harness from the Smart Thermostatic Control 32. Inspect the pins in the connectors and ensure they are not bent or broken. Inspect the wires connecting to the connectors and ensure they are not broken or loose. Reconnect the temperature sensors ensuring they are firmly connected and snapped together. Plug the wiring harness back into the Smart Thermostatic Control 32. Plug the Smart Thermostatic Control 32 back into the wall outlet.
ISSUE 1: If the controller has run within the dormant interval, the pump won’t automatically turn on when flow is detected.
RESOLUTION 1: Unplug the controller from power for 10 seconds and plug it back in. This will reset the controller and it will now turn on automatically when it detects flow. Turn a hot water faucet fully on for 1 second and then turn it off. If it still doesn’t turn on see ISSUE 2.
ISSUE 2: The high sensitivity value is set too high for the controller to detect the flow provided by the faucet.
RESOLUTION 2: Open the smart phone app and go to the menu and select “Live Data”TM. This will show you what the controller is sensing. Turn a hot water faucet fully on for 1 second and watch the flow value.If it goes greater than 20 then the pump will turn on. If it doesn’t go greater than 20 then you will need to reduce the high sensitivity setting to be less than the maximum value you observed. For example, if the Flow Meter value went to 15, then set your high sensitivity to 13 and try this test again.
ISSUE 1: The thermostatic crossover valve(s) is (are) already heated up and aren’t allowing flow.
RESOLUTION 1: Check the temperature of the water at the location of the crossover valve(s) and see if thewater is 95F. If it is, wait for the water to cool off and test it again. If it is not 95F, see ISSUE 2.
ISSUE 2: The low sensitivity value is set too high and the controller isn’t registering enough flow to keep the pump running.
RESOLUTION 2: Unplug the controller from power, wait 10 seconds and plug it back in. Open the smart phone app and go to Settings → Advanced Settings and set the Initial Pump Run Time to 30 seconds. Go back to the menu and select “Live Data”TM. Turn a hot water faucet fully on for 1 second and then turn it off. The pump will now run for 30 seconds and you should see the flow value that the pump is pushing through the thermostatic crossover valve(s). If this value is 0 then the crossover valve(s) is (are) closed andnot allowing flow. If this value is not 0, then set the low value in Settings → Sensitivity to be less than this value and the pump will continue to run when triggered. Don’t forget to go back to Settings → Advanced Settings and set the Initial Pump Run Time back to 5 seconds.
ISSUE: The thermostatic crossover valve(s) is (are) not up to 95F and therefore still allowing flow.
RESOLUTION: Check the temperature of the water at the location of the crossover valve(s) and see if the water is 95F. If it is 95F, see ISSUE 2.
ISSUE 2: The low sensitivity value is set below the flow value the controller is registering and therefore keeping the pump running.
RESOLUTION 2: Open the smart phone app and go to the menu and select “Live Data”TM. The flow valuethat the controller is registering will be displayed. Go into Settings → Sensitivity and set the low value to be greater than this value and the pump will turn off.
ISSUE 1: If the temperature of the water coming out of the water heater after 1 minute is not at least 95F, the controller will turn the pump off.
RESOLUTION 1: Check that the temperature sensor is securely attached to copper piping coming out of the water heater. If it has come loose, tape it back in place ensuring that the entire length of the sensor iscontacting the piping. Secure insulation over the temperature sensor. If the temperature sensor is firmly in place, see RESOLUTION 2.
RESOLUTION 2: Open the smart phone app and go to the menu and select “Live Data”TM. The temperature that the controller is sensing will be displayed. If a lot of hot water has been recently used the tank may cool off to below 95F. If this happens the water won’t be hot enough to cause the thermostaticcrossover valve(s) to close. If the controller senses that this has happened it will turn the pump off and wait the duration of the dormant period before turning on again. This is to give the tank time to heat up rather than run the pump and recirculate lukewarm water.
ISSUE: Pressure spikes in the cold water supply line caused by abrupt turning off of the cold water (for instance when a toilet fills) or caused by fluctuations in the feed from the utility company can cause the Smart Thermostatic Control 32 to trigger the hot water recirculation pump to turn on.
RESOLUTION: The high sensitivity value is too low. Open the smart phone app and go to the menu and go into Settings → Sensitivity and set the high value greater by 5 and see if the issue persists.
If you need further support please contact:
Leridian Dynamics, Inc. support@smartrecirculationcontrol.com or 831-761-8659
Congratulations on purchasing the most advanced micro processor controlled, hot water recirculation pump controller made. This system is designed to run the recirculation pump only when you need it thus saving both water and energy.It is designed and built with pride in the USA to provide years of service and savings.
Contents:
1 Smart Countdown Control 32 with RJ-45 connector
1 ¾” or 1” NPT Flow Sensor with JST connector
1 Wiring Harness with RJ-45 & JST connectors
Needed: The following items are needed for the installation, but are not included.
PTFE (Teflon) Tape
Wire fasteners for securing wiring to the wall
If this test fails, disconnect the flow meter from the wiring harness and the wiring harness from the controller. Inspect the wires to ensure they are not broken or loose and that the pins are not bent. Reconnect all connections ensuring they snap together tightly and re-test. If this test still fails, contact customer support at support@smartrecirculationcontrol.com or 831-761-8659.
If the pump fails to turn on see Trouble Shooting on page 7, item 1.
GREEN LED: will blink 3 times when first plugged in to indicate the unit is functioning correctly
GREEN LED: solid on when a timer is active and pump is not running
RED LED: solid on when the pump is running whether due to a timer or due to demand
BLUE LED: solid on when connected via the smart phone app
NO LED: normal behavior after initial boot up – no timer is active and pump is not running
Please read over the following instructions. If you are not comfortable with any part of them please contact a licensed plumber to perform the installation.
Prior to installation you must perform the system test at the beginning of the Quickstart Guide on page 2.
The Smart Countdown Control 32 can be used simply as an on demand controller for your recirculation pump or, once configured using either an iPhone or Android smart device, it will also work as an advanced timer keeping the hot water line hot between specific times of day and on specific days of the week (up to 10 timers can be set). Evenwhen a timer is active it only runs the pump for the countdown time amount and then goes to sleep for the dormantinterval. The app uses Bluetooth in order to communicate with the controller so you need to be sure that Bluetooth is enabled on your smart device. The app can be downloaded for free from either the Apple App Store or from Google Play by looking up “Smart Recirculation Control”.
There is no need to “pair” the Bluetooth device, running the app will find and connect to the Smart Countdown Control 32 and display the timers currently set. The blue LED on the controller will illuminate when the app is connected. If the blue LED doesn’t illuminate, press the menu button in the top right of the app and select “Scan for Recirc Control”. Note: We have noticed that some Android devices can sometimes have a hard time connecting so if it fails to connect after pressing the “Scan for Recirc Control” menu item a couple of times, try restarting the app.
Once connected you can tap any of the existing timers to edit or delete them or press the Add Timer button to add a new one.
The real time clock in the Smart Countdown Control 32 is set when you connect to the controller with your smart phone. When a timer is active the green LED will be lit. When the Smart Countdown Control 32 turns the pump on,the LED will change from green to red. When the loop is up to temperature the pump will shut off and the LED will change back from red to green.
When connected to the controller via the smart phone app, the blue LED will always be lit. To know if the pump isrunning or a timer is active, select “Live Flow”TM from the menu and it will provide the status of the pump and timers.
The Smart Countdown Control 32 has a built in power backup that will keep the clock’s time for approximately 48 hours after which the clock will lose its time and the controller’s timers won’t function until the time is set by running the app and connecting to the Smart Countdown Control 32.
The clock does not adjust for daylight savings time so when the time changes you will need to connect to the SmartCountdown Control 32 with your smart device and the time will be set to the time of your smart device.
The app also allows for controlling all the settings of the firmware of the Smart Countdown Control 32. To access thesettings press the menu button in the top right of the app and select “Settings”. There will be a list of basic settings and the ability to expand the settings to “Show Advanced Settings”.
Sensitivity – The sensitivity setting allows the user to set how many pulses of the flow meter are required to turn the controller on. The default value is 20 which is fine for most installations. If you find that the controller is not turning on when you turn a faucet on and off, you would decrease this value to make the controller more sensitive to flow(require fewer pulses to turn the controller on). Correspondingly, if you find that the controller is turning on when there is no timer active and no hot water being drawn, you would increase this number to make the unit less sensitive to fluctuations in flow (require more pulses to turn the controller on).
Run Time – This setting allows you to set the amount of time the controller will run the pump when it is triggered. It is configurable up to 15 minutes with the default being 5 minutes.
Timers Enabled – This switch enables and disables the timers. This can be used to turn the timers off when you go away on vacation or to simply turn them off if you just want to use the on demand feature of the controller. TheSmart Thermostatic Control 32 implements “Smart Timers”TM which, regardless of this setting, will automatically disable themselves if no hot water usage is detected within 24 hours. The timers are re- enabled as soon as hot water flow is detected.
Dormant Interval – The dormant interval is the number of minutes that the controller lies dormant after having run the pump. This setting prevents fast cycling of the pump when hot water is being turned on and off over a short period of time. This is also the number of minutes that the controller waits between runs when a timer is active. If you want the pump to turn on more often while a timer is active or more quickly between pump runs when you draw hot water you would reduce this value. This value is set to a default of 10 minutes.
Flow Meter Delay – The flow meter delay is the amount of time in hundredths of a second during which time the controller counts the number of pulses that occur in the flow meter. If the number of pulses is above the sensitivity threshold then the controller deems that there is flow in the hot water line. This value is set to 75 hundredths of a second which is fine for most installations.
Reset to Factory – This will reset the Smart Countdown Control 32 back to the factory defaults. If you experience strange behavior of the controller, resetting to the factory defaults would be a good thing to try to resolve the issue.This will also reset all the timers back to the 4 factory default timers so if you have changed the timers you will needto reset them after performing a factory reset. You must type “yes” when prompted in order for the factory reset to take place.
The firmware of the Smart Countdown Control 32 can be updated via the smart phone app. To check if there is new firmware available go to the menu and select Firmware. If there is new firmware available it will be displayed and the selection will be enabled. Select the firmware and click the “Update Firmware” button. The update can take up to 5 minutes to complete. Do not allow the application to go to the background or the phone to sleep while the firmware update is running or the update will fail. The system is designed to only switch to the new firmware if the update is successful so if this does happen simply attempt the firmware update again.
There is an option on this screen to “Show All Firmware Version” which will display the firmware from our
entire product line. The sensor requirements for the different firmware versions are different so updating to a different product without understanding the implications may provide unexpected results. Please see our web site for a description of the different products.
ISSUE 1: If the controller has run within the dormant interval, the pump won’t automatically turn on when flow is detected.
RESOLUTION 1: Unplug the controller from power for 10 seconds and plug it back in. This will reset the controller and it will now turn on automatically when it detects flow. Turn a hot water faucet fully on for 1 second and then turn it off. If it still doesn’t turn on see ISSUE 2.
ISSUE 2: The sensitivity value is set too high for the controller to detect the flow provided by your faucet.
RESOLUTION 2: Open the smart phone app and go to the menu and select “Live Flow”. This will showyou what the controller is sensing. Turn a hot water faucet fully on and watch the flow value. If it goes greater than 20 then the pump will turn on. If it doesn’t go greater than 20 then you will need to reduce the sensitivity value to be less than the maximum value you observed. For example, if the Flow Meter value went to 15, then set your sensitivity value to 13 and try this test again.
ISSUE: Pressure spikes in the cold water supply line caused by abrupt turning off of the cold water (for instance when a toilet fills) or caused by fluctuations in the feed from the utility company can cause the Smart Countdown Control 32 to trigger the hot water recirculation pump to turn on.
RESOLUTION: The sensitivity value of the Smart Countdown Control 32 is too low and should be adjusted higher.
If you need further support please contact:
Leridian Dynamics, Inc. support@smartrecirculationcontrol.com or 831-761-8659
Congratulations on purchasing the most advanced micro processor controlled, hot water recirculation pump controller made. This system is designed to run the recirculation pump only when you need it thus saving both water and energy.It is designed and built with pride in the USA to provide years of service and savings.
Contents:
1 Smart Aquastat Control 32 with RJ-45 connector
1 Temperature Sensor with RJ-14 connector.
1 ¾” or 1” NPT Flow Sensor with JST connector
1 Wiring Harness with RJ-45, RJ-14 and JST connectors
Needed: The following items are needed for the installation, but are not included.
Electrical Tape PTFE(Teflon) Tape
Wire fasteners for securing wiring to the wall
If this test fails, disconnect all connections and inspect the wires to ensure they are not broken or loose and that thepins in the Y connector are not bent. Reconnect all connections ensuring they snap together and re-test. If this test still fails, contact customer support at support@smartrecirculationcontrol.com or 831-761-8659.
If the pump fails to turn on or run for longer than 5 minutes and the piping feels hot, see Trouble Shooting on page 7.
GREEN LED: will blink 3 times when first plugged in to indicate the unit is functioning correctly
GREEN LED: solid on when a “Smart Timer”TM is active and pump is not running
RED LED: fast blinking indicates that one or both of the temperature sensors are not connected properly
RED LED: solid on when the pump is running whether due to a timer or due to demand
BLUE LED: solid on when connected via the smart phone app
NO LED: normal behavior after initial boot up – no timer is active and pump is not running
Please read over the following detailed instructions. If you are not comfortable with any part of them please contact a licensed plumber to perform the installation.
Prior to installation you must perform the system test at the beginning of the Quickstart Guide on page 2.
Note 1: If installing on PEX you will need to plumb in a short section of copper pipe to which to attach thetemperature sensors. PEX is a pretty good insulator and will cause a lag in the controller sensing the temperature change.
Note 2: Temperature sensor MUST be placed before thereturn line T’s back into the cold water supply line.
The Smart Aquastat Control 32 can be used simply as an on demand controller for your recirculation pump or, once configured using either an iPhone or Android smart device, it can be configured via “Smart Timers”TM to keep therecirculation loop hot between specific times of day and on specific days of the week (up to 10 timers can be set).They are called “Smart Timers”TM because if the controller doesn’t sense hot water usage for 24 hours the timers are automatically disabled until hot water flow is detected. And even when a timer is active it only runs the pump until therecirculation loop has heated up and then it shuts the pump off while continuing to monitor the recirculation loop temperature.
The app uses Bluetooth in order to communicate with the controller so you need to be sure that Bluetooth is enabled on your smart device. The app can be downloaded for free from either the Apple App Store or from Google Play by searching for “Smart Recirculation Control”. There is no need to “pair” the Bluetooth device, running the app will find and connect to the Smart Aquastat Control 32 and display the timers currently set. The blue LED on thecontroller will illuminate when the app is connected. If the blue LED doesn’t illuminate, press the menu button at the top right of the app and select “Scan for Recirc Control”. Note: We have noticed that some Android devices can sometimes have a hard time connecting so if it fails to connect after pressing the “Scan for Recirc Control” menu item a couple of times, try restarting the app.
Once connected you can tap any of the existing timers to edit or delete them or press the Add Timer button to add anew one. The real time clock in the Smart Aquastat Control 32 is set when you connect to the controller with your smart phone. When a timer is active the green LED will be lit. When the Smart Aquastat Control 32 turns the pump on, the LED will change from green to red. When the loop is up to temperature the pump will shut off and the LED will change back from red to green.
When connected to the controller via the smart phone app, the blue LED will always be lit. To know if the pump isrunning or a timer is active, select “Live Data”TM from the menu and it will provide the status of the pump and timers.
The Smart Aquastat Control 32 has a built in power backup that will keep the clock’s time for approximately 48 hours after which the clock will lose its time and the controller’s timers won’t function until the time is set by running the app and connecting to the Smart Aquastat Control 32.
The clock does not adjust for daylight savings time so when the time changes you will need to connect to the SmartAquastat Control 32 with your smart device and the time will be set to the time of your smart device.
The app allows for controlling all the settings of the firmware of the Smart Aquastat Control 32. To access the settings press the menu button in the top right of the app and select “Settings”. There will be a list of basic settings and the ability to expand the settings to “Show Advanced Settings”.
Sensitivity – The sensitivity setting allows the user to set how many pulses of the flow meter are required to turn the controller on. The default value is 20 which is fine for most installations. If you find that the controller is not turning on when you turn a faucet on and off, you would decrease this value to make the controller more sensitive to flow(require fewer pulses to turn the controller on). Correspondingly, if you find that the controller is turning on when there is no timer active and no hot water being drawn, you would increase this number to make the unit less sensitive to fluctuations in flow (require more pulses to turn the controller on).
Temperature Range – The temperature range setting allows the user to set the temperature values that cause thecontroller to turn the pump on and off. When a timer is active or the controller senses flow, it compares the temperature sensor value to the configured low temperature and if is less than this value (default of 100F) it turns the pump on. It will continue to run the pump until the temperature is greater than the configured high temperature(default of 105F). You need to ensure that your water heater is set to a temperature greater than the high temperature setting or the pump will never turn off.
Timers Enabled – This switch allows you to manually disable the timers. This can be used to turn the timers offwhen you go away on vacation or to simply turn them off if you just want to use the on demand feature of thecontroller. The Smart Aquastat Control 32 implements “Smart Timers”TM which, regardless of this setting, will automatically disable themselves if no hot water usage is detected within 24 hours. The timers are re- enabled as soon as hot water flow is detected.
Flow Meter Delay – The flow meter delay is the amount of time in hundredths of a second during which time the controller counts the number of pulses that occur in the flow meter. If the number of pulses is above the sensitivity threshold then the controller deems that there is flow in the hot water line. This value is set to 75 hundredths of a second which is fine for most installations.
Reset to Factory – This will reset the Smart Aquastat Control 32 back to the factory defaults. If you experience strange behavior of the controller, resetting to the factory defaults would be a good thing to try to resolve the issue.This will also reset all the timers back to the 4 factory default timers so if you have changed the timers you will need to reset them after performing a factory reset. You must type “yes” when prompted in order for the factory reset to take place.
The firmware of the Smart Aquastat Control 32 can be updated via the smart phone app. To check if there is new firmware available go to the menu and select Firmware. If there is new firmware available it will be displayed the selection will be enabled. Select the firmware and click the “Update Firmware” button. The update can take up to 5 minutes to complete. Do not allow the application to go to the background or the phone to sleep while the firmware update is running or the update will fail. The system is designed to only switch to the new firmware if the update is successful so the controller will not fail if the update does happen to fail.
There is an option on this screen to “Show All Firmware Version” which will display the firmware from our entire product line. The sensor requirements for the different firmware versions changes so updating to a different productwithout understanding the implications may provide unexpected results. Please see our web site for a description of the different products.
ISSUE: The Smart Aquastat Control 32 is not able to get temperature information from the temperature sensor.
RESOLUTION: Unplug the Smart Aquastat Control 32 from the wall, disconnect the temperature sensorconnector and disconnect the wiring harness from the Smart Aquastat Control 32. Inspect the pins in the connectors and ensure they are not bent or broken. Inspect the wires connecting to the connectors and ensure they are not broken or loose. Reconnect the temperature sensor ensuring it snaps firmly into the connector. Plug the wiring harness back into the Smart Aquastat Control 32. Plug the Smart Aquastat Control 32 back into the wall outlet.
ISSUE 1: If the temperature of the water at the temperature sensor is greater than the low temperature value configured in Settings→Temperature Range the pump won’t turn on when flow is detected.
RESOLUTION 1: Open the smart phone app and go to the menu and select “Live Data”TM. If the temperature is above the configured high temperature value, wait until the temperature drops below the configured low temperature value or increase the low temperature value via the smart phone app and test it again. If the temperature is below the configured low temperature value see ISSUE 2.
ISSUE 2: The Settings → Sensitivity value is set too high for the controller to detect the flow provided by the faucet.
RESOLUTION 2: Open the smart phone app and go to the menu and select “Live Data”TM. This will show what flow value the controller is sensing. Turn the hot water faucet fully on and watch the flow value. If it goes greater than 20 then the pump will turn on. If it doesn’t go greater than 20 then you will need to reducethe sensitivity value to be less than the maximum value you observed. For example, if the Flow Meter value went to 15, then set your sensitivity to 13 and try this test again.
ISSUE: The controller isn’t sensing a temperature greater than the configured high temperature.
RESOLUTION 1: Ensure that the temperature sensor is securely connected to the copper piping on the return line, covered with pipe insulation and is connected to the piping before it T’s into the cold water feed into thewater heater. If it is loose, re-secure it in place with electrical tape, cover it with insulation and test it again. If it continues to run see RESOLUTION 2.
RESOLUTION 2: Open the smart phone app and go to the menu and select “Live Data”TM. It will display the temperature value. If this value is less than the high temperature setting configured in Settings → Temperature Range (default 105 F degrees) then the pump won’t turn off. Adjust the Temperature Rangevalues down so that the high value is less than the observed value and the pump will turn off.
ISSUE: Pressure spikes in the cold water supply line caused by abrupt turning off of the cold water (for instance when a toilet fills) or caused by fluctuations in the feed from the utility company can cause the Smart Aquastat Control 32 to trigger the hot water recirculation pump to turn on.
RESOLUTION: The sensitivity value of the Smart Aquastat Control 32 is too low and should be adjusted higher.
If you need further support please contact:
Leridian Dynamics, Inc. support@smartrecirculationcontrol.com or 831-761-8659
→ Installation instructions for Smart Recirculation Control v3
→ Installation instructions for Smart Thermostatic Control Tankless v3
→ Installation instructions for Smart Thermostatic Control Tank v3
→ Installation instructions for Smart Aquastat Control v3
→ Installation instructions for Smart Countdown Control v3
→ Installation instructions for Smart Recirculation Control v2
→ Installation instructions for Original Smart Recirculation Control v1
→ Installation instructions for Smart Recirculation Retrofit