Beckett 7600 Removing the Control to be Replaced Electrical shock hazard, Burn and Scald Hazard

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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 anti-scald valve protection.

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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Contents Description / Applications Features Table of ContentsEnvironmental Ratings Technical SpecificationsElectrical Shock Hazard Electrical RatingsMounting InstallationSensor/Immersion Well Mounting Surface Mounting Burn, Scald, Explosion, and Equipment Malfunction Hazard AquaSmart Models and Cross-Reference GuideFrom previous Removing the Control to be Replaced Electrical shock hazard Installing the Temperature SensorBurn and Scald Hazard 8 hex Explosion Burn and Scald HazardsThis is very important for successful control operation In-1 Installation InstructionsAppliance Surface WiringInstalling the AquaSmart Control Immersion Well or 2-in-1 SensorSome Thermostats Are Polarity Sensitive Wiring the AquaSmart ControlWater Flow Control Wiring7600A/B multi-zone connections Control Wiring Option 2 Circulator-On Delay on All Zones Taco Honeywell Control Wiring Option 1 7600B onlyTaco Honeywell Control Wiring Option 2 7600A onlyDHW With Indirect Domestic Hot Water DHW Limit Zone Relay Circulator Control Wiring Option 3 Utilizing a Zone Panel On Next Honewell Taco Programming Basic Functions Temperature High LimitTemperature Low Limit Temperature High Limit DifferentialViewing the Boiler Cycle History Temperature Low Limit DifferentialChanging the Heat Manager Settings Programming Additional OptionsKey for steps B3 & B5 Changing the Circulator SettingsSelecting Fahrenheit or Celsius Temperature Display Changing Domestic Hot Water Priority Dhwp SettingChanging Low Water Cut-Off Lwco Setting AquaSmart Boiler Control Manual AquaSmart Operation Control Checkout ProcedureSystem Action AquaSmart Response How a Boiler Control Works Lockout TroubleshootingDisplay Boiler Status Mode HeatManager TechnologyService Final ChecklistAccessories Page Mounting Template Limited Warranty Information