PARTS & ACCESSORIES 6 720 804 345 (2012/04) US Description / Applications The Beckett AquaSmart™ is an advanced boiler control designed for use on residential and light commercial boiler systems. All models include the option of enabling Beckett HeatManager™ dynamic temperature reset that, when selected, provides up to 20% fuel consumption savings. The control includes a backlit LCD digital display with touch pad to easily program temperature limits, differentials, and other advanced options.
Table of Contents Technical Specifications ............................................. 3 Electrical Ratings .......................................................................... 3 Temperature Ranges and Differentials .......................................... 3 Environmental Ratings .................................................................. 3 Approvals ......................................................................................
Figure 1 - Getting to know the AquaSmart 7600 Series Control Electrical Shock Hazard The AquaSmart control should only be operated with the door attached and securely closed. Communication Port TW/TR Terminals Sensor Mount Touch Pad Sensor Jack Clamping Screw For Sensor Power Disconnect Switch (Optional) Pull door up Door Removal Rotate door until grooves are aligned Technical Specifications Do Not Use This Control in an Application that is Not Within the Ratings Listed in This Section.
Figure 2 - Basic Dimensions (inches) 3.51 4.92 4.50 3.04 6.50 SK10013 5.38 .75 3.50 Installation Figure 3 - Mounting Options Sensor/Immersion Well Mounting: Mounting OEM Installation: When replacing an OEM-installed AquaSmart, consult the appliance manufacturer’s wiring diagrams and instructions for additional information. Retrofit Installation: The AquaSmart can be used to replace most standard boiler temperature controls. For a cross-reference of compatible replacements, refer to Table 1.
AquaSmart Models and Cross-Reference Guide Table 1a - Direct Replacements Honeywell Beckett Replacement Notes L7148F (All) L8148E (All) 7600B Must confirm that 7600 VA rating is adequate to meet VA requirements of system. Make sure 7600 B1 output does not exceed 1.25A @ 24VAC (30 VA). 7600 outputs are not rated for 240 VAC. B2, TW and TR terminals replace TV, T and Z, respectively. L8124A (All) L8124C (All) 7600A 7600 outputs are not rated for 240 VAC.
Table 1b (continued from previous page) Honeywell 6 Beckett Replacement Notes L4081A/B L6081A/C 7600A or 7600B (Based on System Voltage Requirements) Remove switching relay, if used, from the system when replacing the L4081 or L6081. Make sure 7600 outputs do not exceed 7.4A @ 120 VAC. 7600 outputs are not rated for 240 VAC.
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.
Installing the 2-in-1 Sensor Note: There are two versions of the 2-in-1 sensor. The 76002N1SXX is an integrated single unit consisting of a sensor and thermowell. The 76002N1RXX consists of two components, a thermowell (7600TWXX) and a replaceable sensor probe (7600PXX). The following instructions apply to both versions unless otherwise specified. Do not use in steam applications. For use in hot water boilers or water heaters only. Do not use outside of the intended use and specifications.
2-in-1 “Integrated Unit” Instructions 2-in-1 “Replaceable Unit” Instructions This is very important for successful control operation. This is very important for successful control operation. 1. Remove the existing immersion well. Clean the threads in the boiler port tapping. Follow all applicable safety codes, rules and guidelines for removing/ installing immersion wells. 1. Remove the existing immersion well. Clean the threads in the boiler port tapping.
Figure 7 - Pin Engagement Cutaway e f Figure 8 - Sensor Water Detection Method g AquaSmart Boiler Control 2-IN-1 SENSOR Ground Screw Water Not Present Ground Wire e - No pin engagement Pipe Clamp f - As the probe is inserted, it comes in contact with the clip opening and there is some slight resistance (tactile feedback). Continue pushing probe which forces pin to slide further into the clip. Incomplete Circuit Water Inlet g - Complete engagement.
Installing the AquaSmart Control (Refer back to Figure 3 for appropriate mounting method). Mounting to the Immersion Well or 2-in-1 Sensor: 1. Mount the control by aligning the 7/8” diameter hole (found on back) around the mating feature of the immersion well or 2-in-1 sensor and press into place. Position the control upright and tighten down the #10 screw located on the left side of the control. Tighten so that control is securely in place (Figure 9). 2.
Wiring the AquaSmart Control ○ ○ ○ ○ ○ ○ Consult the appliance wiring diagrams to check the manufacturer’s specifications. Refer to Figure 12 through Figure 17 for some typical wiring diagrams. Verify the wires are still labeled correctly and make connections to the appropriate terminals on the control wiring terminal strip. Provide disconnect means and overload protection as required on power supply. Connect control conduit bracket to earth ground using the supplied grounding screw.
Figure 12 - 7600A/B single-zone connections with or without a tankless coil AIR VENT Water Flow: AIR SEPARATOR SK10030 P1 HEATING ZONE EXPANSION TANK COLD WATER INLET Control Wiring: 1. Set “DHWP OFF” (default, see programming section for instructions) SK10019 2. Set “C1 on TT” (default, see programming section for instructions) TW TR L2 C1 C2 ZC ZR B1 B2 FIELD/MFR.
Figure 13 - 7600A/B multi-zone connections with or without a tankless coil * Additional zones can be added by duplicating the plumbing and wiring of zone 3. Water Flow: AIR VENT AIR SEPARATOR SK10031 P3* P2 P1 HEATING ZONE 1 HEATING ZONE 2 HEATING ZONE 3* EXPANSION TANK COLD WATER INLET Control Wiring (Option 1): Circulator-On and -Off Delays on Zone 1 ONLY 1. Set “DHWP OFF” (default, see programming section for instructions) 2.
Figure 13 (continued) - 7600A/B multi-zone connections with or without a tankless coil * Additional zones can be added by duplicating the plumbing and wiring of zone 3. ◄ CONTINUED FROM PREVIOUS PAGE Control Wiring (Option 2): Circulator-On Delay on All Zones 1. Set “DHWP OFF” (default, see programming section for instructions) 2. Set “C1 on ZR” (see programming section for instructions) 3. Circulator-on delay will affect all zones. Circulator-off delay will have no effect.
* Additional zones can be added by duplicating the plumbing and wiring of zone 3, adding additional transformers as needed.
Figure 14 (continued) - 7600A/B alternate multi-zone connections with or without a tankless coil * Additional zones can be added by duplicating the plumbing and wiring of zone 3, adding additional transformers as needed. ◄ CONTINUED FROM PREVIOUS PAGE Control Wiring (Option 2): 7600A only CAUTION - Always observe proper polarity when connecting multiple transformers in a system (connect red terminal of external transformer to TR terminal of AquaSmart). 1.
Figure 15 - 7600A/B single-zone connections with Indirect Domestic Hot Water (DHW) Water Flow: AIR VENT AIR SEPARATOR P1 P2 SK10034 INDIRECT DHW HEATING ZONE 1 DHW ZONE EXPANSION TANK COLD WATER INLET Control Wiring: 1. Set “DHWP on ZR” (see programming section for instructions) 2. Set “C1 on TT” (default, see programming section for instructions) SK10023 3. Circulator-on and -off delay will only affect zone 1.
Figure 16 - 7600A/B multi-zone connections with Indirect Domestic Hot Water (DHW) * additional zones can be added by duplicating the plumbing and wiring of zone 3.
Figure 16 (continued)- 7600A/B multi-zone connections with Indirect Domestic Hot Water (DHW) * Additional zones can be added by duplicating the plumbing and wiring of zone 3. ◄ CONTINUED FROM PREVIOUS PAGE Control Wiring (Option 1): Circulator-On and -Off Delays on DHW Zone Only 1. Set “DHWP on TT” (see programming section for instructions) 2. Set “C1 on TT” (default, see programming section for instructions) 3. Circulator-on and -off delays will only affect DHW zone.
Figure 16 (continued) - 7600A/B multi-zone connections with Indirect Domestic Hot Water (DHW) * Additional zones can be added by duplicating the plumbing and wiring of zone 3. ◄ CONTINUED FROM PREVIOUS PAGE Control Wiring (Option 2): Circulator-On Delay on All Zones 1. Set “DHWP OFF” (default, see programming section for instructions) 2. Set “C1 on ZR” (see programming section for instructions) 3. Circulator-on delay will affect all zones. Circulator-off delay will have no effect.
Figure 16 (continued) - 7600A/B multi-zone connections with Indirect Domestic Hot Water (DHW) * Additional zones can be added by duplicating the plumbing and wiring of zone 3. ◄ CONTINUED FROM PREVIOUS PAGE Control Wiring (Option 3): Utilizing a Zone Panel 1. Set “DHWP on TT” (see programming section for instructions). 2. Set “C1 on TT” (default, see programming section for instructions). 3. Circulator-on and -off delay will only effect DHW zone. 4.
* Additional zones can be added by duplicating the plumbing and wiring of zone 3, adding additional transformers as needed.
* Additional zones can be added by duplicating the plumbing and wiring of zone 3, adding additional transformers as needed. Figure 17 (continued) - 7600A/B alternate multi-zone connections with Indirect Domestic Hot Water (DHW) ◄ CONTINUED FROM PREVIOUS PAGE Control Wiring (Option 1): 7600B only CAUTION - Always observe proper polarity when connecting multiple transformers in a system (connect red terminal of external transformer to TR terminal of AquaSmart). 1.
* Additional zones can be added by duplicating the plumbing and wiring of zone 3, adding additional transformers as needed. Figure 17 (continued) - 7600A/B alternate multi-zone connections with Indirect Domestic Hot Water (DHW) ◄ CONTINUED FROM PREVIOUS PAGE Control Wiring (Option 2): 7600A only CAUTION - Always observe proper polarity when connecting multiple transformers in a system (connect red terminal of external transformer to TR terminal of AquaSmart). 1.
Programming Basic Functions the following screen: Electrical Shock Hazard. Can cause severe injury, death, or equipment damage. Live line voltage wires and connections will be exposed while programming the AquaSmart. Take care to touch only the AquaSmart keypad while programming the control. Fire, Explosion, and Burn Hazards. Can cause severe injury, death, or equipment damage. Do not set the operating limits of the control outside of those listed by the appliance manufacturer.
3. Press the “ENTER (RESET)” key. 4. The control will ask you to confirm the setting with the following screen: Press “ENTER (RESET)” if the value is correct, or “CANCEL (BACK)” if it is not. D. Temperature Low Limit Differential 1. In any mode or screen other than an OPTION sub-menu, press the “LOW DIFF” key. 2. The following screen will be displayed: The temperature displayed is the current setting. Use the “▲” and “▼” keys to select the desired setting.
3. Press the “ENTER (RESET)” key. The following screen will be displayed: A B C D 4. To navigate the history menu, press “▲” or “▼” key to view additional data and cycles. 5. Press the “▼” key to view the other data screen for the most recent cycle. The following screen will be displayed: A E F 6. Press “CANCEL (BACK)” to exit.
c. To change the call for heat source that the circulator is activated from (see Figures 8 - 13 for examples), press the “▲” and “▼” keys until the following screen is displayed: Press “ENTER (RESET)” to toggle the circulator source between ON TT, ON ZR, and ON BOTH. 4. Press “CANCEL (BACK)” to exit. D.
2. Press the “▲” and “▼” keys until the following screen is displayed: 3. Press “ENTER (RESET)”. The following screen will be displayed: 4. Press “ENTER (RESET)”. The following screen will be displayed: 5. Use the “▲” and “▼” keys to scroll between the DELAY OFF, DELAY ON, and RESET functions or press “ENTER (RESET)” to change. Use the “▲” and “▼” keys to change the setting. 6.
AquaSmart Operation Table 4 – Typical operation with default settings (Circulator set “ON TT”) System Action AquaSmart Response ○ Temperature falls below low limit ○ ○ Thermostat call for heat Thermostat is satisfied ZR call for heat ZR is satisfied Temperature reaches high limit Circulator is inactive for 3 days ○ Priority call for heat Burner is turned on as long as the water temperature is below the high limit. Circulator is turned on after circulator-on delay if the low limit is satisfied.
How a Boiler Control Works Figure 19 - Cold Start Operation (Low Limit ► OFF) High Temperature Differential (Adjustable 5° to 45°F) Starts the burner when temperature drops to the HIGH LIMIT DIFFERENTIAL setting. High Temperature Limit (Adjustable 100° to 220°F) Shuts burner off at HIGH LIMIT set point. 150 175 Example Shown: High Limit = 200° Differential = 20° 200 225 125 100 250 75 275 During a call for heat, the burner will be shut off at 200° and be turned back on at 180° (200°-20°).
Display Boiler Status Mode A D B F C G E NOTE: When economizing, the display will toggle between screens A and B every 5 seconds. KEY: D - Current operating temperature mode of boiler. STANDBY will be displayed if neither the burner nor circulator are energized. CIRCULATING will be displayed if the circulator is energized but the burner is not.
Final Checklist Service Before Leaving the Installation Site, Verify: During Annual Maintenance or More Frequent Service Intervals, Verify the below items. □ All wiring has been done correctly in a workmanlike way, is secure and meets all applicable codes. □ AquaSmart control temperature settings, differentials and optional functions are correctly set. □ The control program is functioning properly by observing at least one complete cycle.
SK10029 THIS END UP Mounting Template Use self-drilling screws supplied in the 7600RMU Remote Mount Kit -orDrill 0.
Limited Warranty Information The R. W. BECKETT CORPORATION (“Beckett”) warrants to persons who purchase its “Products” from Beckett for resale, or for incorporation into a product for resale (“Customers”), that its equipment is free from defects in material and workmanship. To qualify for warranty benefits, products must be installed by a qualified service agency in full compliance with all codes and authorities having jurisdiction, and used within the tolerances of Beckett’s defined product specifications.