Removing the Control to be Replaced
Electrical shock hazard.
Disconnect all electrical power to the appliance circuit before replacing the control. There may be more than one disconnect switch.
1.Compare the attached wires to available wiring diagrams on the control cover and to the devices to which they can be traced. If wiring diagrams have been lost they are available later in this manual.
2.Label each wire accordingly, to ensure accurate reconnection. (Masking tape works well for labeling.)
3.Remove each wire from the old control. Make sure each label is intact.
4.Loosen the control mounting arrangement and remove the control from the system.
5.Make note of the temperature settings for high limit, low limit and differentials. This will provide important reference data for the new control adjustment. Please note that differentials may be used differently in other manufacturer’s controls. See Figure 19 & 16 toward end of manual for a description of how the AquaSmart’s differentials work. Consult the manual of the control being replaced for information regarding its differentials.
Installing the Temperature Sensor
This is very important for successful control operation.
Burn and Scald Hazard
Excessive water temperatures could cause explosion, burns, scalding, pressure relief flooding and fitting leaks.
yCarefully follow the outlined procedures for temperature sensor installation to ensure accurate water temperature sensing and effective control operation.
yMake sure the plumbing for domestic hot water has
1.Make sure the immersion well is clean inside, has no leaks, is of proper length and is otherwise suitable for receiving the new control and temperature sensor.
2.Replace questionable wells with new ones and use pipe sealant to seal the threads.
3.Grasp the sensor lead, just behind the sensor probe and carefully insert it into the well until it comes to rest at the very end of the well. The sensor is designed with radial splines to provide a snug fit in most standard wells.
4.The thermal time constant of the sensor is 40 seconds. Consider using thermal grease if faster response in desired.
5.Surface mounting may require additional lead length to reach the control receptacle. Use the extension cable (part no. 52120), found in the 7600RMU Remote Mount Kit, to extend the lead by 48”.
6.Install the strain relief (part no. 3266201) as shown, capturing the cable against the hex. Crimp the strain relief opposite side of the cable. This anchors the sensor securely inside the immersion well.
7.Plug the temperature sensor lead terminal into the receptacle on the control base. See Figure 10.
Note: The sensor is not tested and approved for being mounted to the outside of a pipe. It is for use in immersion wells only.
Figure 4b - Strain Relief
Figure 4a - Installation of Temperature Sensor in Immersion Well
Sensor must butt against end | Brass Fitting |
|
Temperature Sensor
Copper Well Tube
Sensor connects to Beckett AquaSmart
AquaSmart Boiler Control Manual
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