PARTS & ACCESSORIES
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. The AquaSmart™ also has memory storage of
system history for help with diagnostics and troubleshooting.
Table of Contents
Features........................................................................ 2
Technical Specifications ............................................. 3
Electrical Ratings .......................................................................... 3
Temperature Ranges and Differentials .......................................... 3
Environmental Ratings .................................................................. 3
Approvals ...................................................................................... 3
Installation.................................................................... 4
Mounting ....................................................................................... 4
AquaSmart Models and Cross-Reference Guide .......................... 5
Removing the Control to be Replaced .......................................... 7
Installing the Temperature Sensor ................................................ 7
Installing the 2-in-1 Sensor ........................................................... 8
2-in-1 Sensor Technical Specifications ......................................... 8
2-in-1 Installation Instructions ....................................................... 9
Test the Low Water Cut-off (LWCO) Safety Function .................... 9
Installing the AquaSmart Control ..................................................... 10
Immersion Well or 2-in-1 Sensor ................................................ 10
Appliance Surface ...................................................................... 10
Wiring ........................................................................ 10
Wiring the AquaSmart Control.....................................................11
Programming Basic Functions ................................ 25
A. Temperature High Limit .......................................................... 25
B. Temperature Low Limit........................................................... 25
C. Temperature High Limit Differential ....................................... 25
D. Temperature Low Limit Differential ........................................ 26
Programming Additional Options ............................ 26
A. Changing the Heat Manager Settings.................................... 26
B. Viewing the Boiler Cycle History ............................................ 26
C. Changing the Circulator Settings ........................................... 27
D. Changing Domestic Hot Water Priority (DHWP) Setting ....... 28
E. Selecting Fahrenheit or Celsius Temperature Display ........... 28
F. Changing Low Water Cut-Off (LWCO) Setting ....................... 28
AquaSmart Operation ............................................... 30
Control Checkout Procedure ...................................................... 30
How a Boiler Control Works ....................................................... 31
Display Boiler Status Mode ........................................................ 32
Troubleshooting ........................................................ 32
Lockout....................................................................................... 32
HeatManager Technology ......................................... 32
Final Checklist ........................................................... 33
Accessories ............................................................... 33
Service ........................................................................ 33
Mounting Template .................................................... 35
Limited Warranty Information .................................. 36
Features
○
HeatManager™ dynamic temperature reset for
additional energy savings
— DOE 2012 Compliant
— Meets NR CAN proposed 2012 requirements
○
Advanced microprocessor-based design
○
Backlit LCD digital display with installer
programming touch pad
○
Quick access to system cycle history
○
Onboard power disconnect switch (optional)
○
High/Low limit and High/Low differential
adjustments
○
24Vac Thermostat compatible
○
Circulator control - 120Vac
○
Zone Control - 120Vac (programmable priority
override for domestic hot water)
○
Temperature sensor mounts in standard
immersion wells
○
Compatible retrofit for most standard boiler
temperature controls
○
Programmable circulator-on and -off delays
○
Helps prevent freeze-up by energizing circulator
and ZC if an error condition is detected.
○
Periodically exercises circulator pump to help
prevent sieze-up.
○
Cold-start compatible
○
6-pin vent damper receptacle on 7500B for easy
wiring to most vent dampers.
Electrical Shock, Fire,
Explosion and Burn Hazards
This control must be installed, adjusted and put
into operation only by a trained, licensed, qualified
professional or service agency in accordance with
the National Electric Code ANSI/NFPA 70 (Canada
CSA C22.1) state, local codes and authorities having
jurisdiction.
y The installer must carefully read and follow the
installation and service instructions contained in this
manual and make them available to the equipment
owner, so they can be kept for future reference.
y This product is not suitable for temperature control of
pools, spas, or Jacuzzis.
y This product is not to be used as a step or a shelf.
2
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.
Improper Control Operation May Result.
Electrical Ratings
Input Voltage: 120 Vac - 50/60 Hz.
Input Current: 0.1 A + B1 + C1 + ZC
MAX Input Current: 20A (Reduce to 15A if optional
power disconnect switch is used)
24 Vac Thermostat Anticipator Current: 0.1 Amp.
Burner Current Rating (B1):
7600A (oil): 7.4 A at 120 Vac FLA; 44.4 A inrush LRA.
7600B (gas): 1.25 A at 24 Vac; 30 VA (total load).
Circulator Current Rating (C1): 7.4 A at 120 Vac FLA;
44.4 A inrush LRA.
Zone Control Current Rating (ZC): 7.4 A at 120 Vac
FLA; 44.4 A inrush LRA.
AquaSmart Boiler Control Manual
Temperature Ranges and Differentials
○
○
○
○
○
High Limit Setting Range: 100 to 240°F (37 to 115°C)
High Limit Differential Range: 5 to 45°F (2 to 25°C)
Low Limit Setting Range: 100 to 220°F (37 to 104°C)
Low Limit Differential Range: 10 to 45°F (5 to 25°C)
Factory Range Stops available - consult factory
Environmental Ratings
○
○
○
○
Storage Temperature: -40 to +150°F (-40 to +65°C)
Operating Temperature: -4 to +150°F (-20 to +65°C)
7600B at 50 Hz: -4 to +140°F (-20 to +60°C)
Maximum Sensing Element Temperature: 250°F (121°C)
Relative Humidity: 5 to 85% RH, non-condensing and
non-crystallizing
Approvals
Underwriters Laboratories Listed to UL353,
UL1998 for U.S. and Canada;
CSA C22.2 No. 24
3
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.
There are two basic methods for mounting the
AquaSmart to the boiler as outlined in Figure 3.
1. Sensor/Immersion Well Mounting – This is the
most common method. If the existing well is not
suitable for any reason, a standard design
aftermarket immersion well with the proper
dimensions can be purchased from a HVAC
distributor. The AquaSmart can then be mounted in
the typical way.
2. Surface Mounting – This is sometimes required
and is part of the AquaSmart base design. The
base has adequate clearance built-in to
accommodate the temperature sensor lead exiting
the back of the control. A remote mounting kit (Pt.
No. 7600RMU) that includes a 48” extension cable
and mounting screws can be purchased separately
for applications where needed.
4
Surface Mounting:
Position the strain relief over the hex,
capturing the sensor cable and crimp to secure.
Sensor Lead (a 48”
extension cable can be
purchased separately)
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.
L7124A/C (All)
L7148A (All)
L7224A/C/U (All)
L7248A/C (All)
7600A
The 7600 has no Honeywell EnviraCOMTM Communications port.
The diagnostic LED lights are replaced by the 7600’s display.
L8148A (All)
7600A
7600 outputs are not rated for 240 VAC.
B1 terminal on 7600 utilizes a 1/4” quick connect.
Set low limit on 7600 to OFF.
L8124E 1016
L8148E 1265
7600B
7600 outputs are not rated for 240 VAC.
B2, TW and TR terminals replace TV, T and Z, respectively.
L8124M (All)
7600A
For replacement with the 7600: Turn low limit off so the circulator is controlled directly by the thermostat and ZC is constantly powered.
L8151A
7600A
7600 outputs are not rated for 240 VAC.
Remote mount sensor cable needed (Part No. 52120)
Hydrolevel
Beckett
Replacement
Notes
3100
7600B
Not a suitable replacement if Low Water Cutoff (LWCO) functionality of the 3100 is used.
3150
7600A
Not a suitable replacement if Low Water Cutoff (LWCO) functionality of the 3150 is used.
Carlin
Beckett
Replacement
90524A
7600A
White Rodgers
Beckett
Replacement
11C15-11
7600A
8B48A-217
7600A
11C30-3
11B54-4
7600A
8F48A-351
8B43A-601
7600B
11C61-12
7600A
Notes
Make sure 7600 outputs do not exceed 7.4A.
Available operating limit and differential ranges are not equivalent. Compare the settings to the AquaSmart ranges before replacing.
The diagnostic LED lights are replaced by the 7600’s display.
Notes
Make sure 7600 outputs do not exceed 7.4A @ 120 VAC. 7600 outputs are not rated for 240 VAC.
Make sure 7600 outputs do not exceed 7.4A @ 120 VAC. 7600 outputs are not rated for 240 VAC.
Available operating limit and differential ranges are not equivalent. Compare the settings to the AquaSmart ranges before replacing.
Not a suitable replacement if SPDT switch action is required; only break-on-rise available on 7600.
Make sure 7600 outputs do not exceed 7.4A @ 120 VAC. 7600 outputs are not rated for 240 VAC.
Burn, Scald, Explosion, and Equipment Malfunction Hazard
Replacement of the following controls must be done only by a qualified service agency or technician who is
trained and experienced in the use of boiler controls.
Carefully follow these guidelines and the directions provided by the manufacturer of the control being replaced.
Note: Beckett assumes no liability for incorrect installation or replacement.
Table 1b - Functional Replacement (Advanced Wiring Needed)
Honeywell
Beckett
Replacement
(Table continued on next page)
Notes
L4006A (All)
L4006G 1022
L4006H 1004
L4008A (All)
L4080B/D
7600A or 7600B
(Based on System
Voltage
Requirements)
Make sure 7600 outputs do not exceed 7.4A @ 120 VAC. 7600 outputs are not rated for 240 VAC.
7600 will require an additional wire (L2) for operation. Short TW-TR terminals. C1, C2, ZC, and ZR are unused.
Set low limit on 7600 to OFF.
Available operating limit and/or differential ranges may not be equivalent. Compare the settings to the AquaSmart ranges before replacing.
To use with a millivolt system, an appropriate voltage relay with isolated gold plated contacts must be added to switch the millivolt circuit.
L4006E (All)
L4008E (All)
L4080F/G
7600A or 7600B
(Based on System
Voltage
Requirements)
Requires the addition of a manual-reset high limit.
Make sure 7600 outputs do not exceed 7.4A @ 120 VAC. 7600 outputs are not rated for 240 VAC.
7600 will require an additional wire (L2) for operation. Short TW-TR terminals. C1, C2, ZC, and ZR are unused.
Set low limit on 7600 to OFF.
Available operating limit and/or differential ranges may not be equivalent. Compare the settings to the AquaSmart ranges before replacing.
To use with a millivolt system, an appropriate voltage relay with isolated gold plated contacts must be added to switch the millivolt circuit.
AquaSmart Boiler Control Manual
5
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.
L6006A (All)
L6006C 1018
L6008A 1192
L6008A 1242
7600A or 7600B
(Based on System
Voltage
Requirements)
Not a suitable replacement if SPDT switch action is required; only break-on-rise available on 7600.
To use with a millivolt system an appropriate voltage relay with isolated gold plated contacts must be added to switch the millivolt circuit.
Make sure 7600 outputs do not exceed 7.4A @ 120 VAC. 7600 outputs are not rated for 240 VAC.
7600 will require an additional wire (L2) for operation. Short TW-TR terminals. C1, C2, ZC, and ZR are unused.
Set low limit on 7600 to OFF.
Available operating limit and/or differential ranges may not be equivalent. Compare the settings to the AquaSmart ranges before replacing.
L8124B 1039
L8148J 1009
7600A or 7600B
(Based on System
Voltage
Requirements)
To use with a millivolt system an appropriate voltage relay with isolated gold plated contacts must be added to switch the millivolt circuit.
7600 outputs are not rated for 240 VAC.
Carlin
Beckett
Replacement
90200A
7600A or 7600B
(Based on System
Voltage
Requirements)
Make sure 7600 outputs do not exceed 7.4A.
Set low limit on 7600 to OFF.
Available operating limit and differential ranges are not equivalent. Compare the settings to the AquaSmart ranges before replacing.
90000 (All)
90200E
90200EL
90300B
7600A or 7600B
(Based on System
Voltage
Requirements)
Requires the addition of a manual-reset high limit.
Make sure 7600 outputs do not exceed 7.4A.
Set low limit on 7600 to OFF.
Available operating limit and differential ranges are not equivalent. Compare the settings to the AquaSmart ranges before replacing.
90200D
7600A or 7600B
(Based on System
Voltage
Requirements)
Not a suitable replacement if SPDT switch action is required; only break-on-rise available on 7600.
Make sure 7600 outputs do not exceed 7.4A.
Set low limit on 7600 to OFF.
Available operating limit and differential ranges are not equivalent. Compare the settings to the AquaSmart ranges before replacing.
Notes
White
Rodgers
Beckett
Replacement
11B06-1
11D18-1
11B18-101
11B30-104
11B02-1
1145-33
7600A or 7600B
(Based on System
Voltage
Requirements)
Make sure 7600 outputs do not exceed 7.4A @ 120 VAC. 7600 outputs are not rated for 240 VAC.
7600 will require an additional wire (L2) for operation. Short TW-TR terminals. C1, C2, ZC, and ZR are unused.
Set low limit on 7600 to OFF.
11B06-46
11B95-31
11B18-153
7600A or 7600B
(Based on System
Voltage
Requirements)
Make sure 7600 outputs do not exceed 7.4A @ 120 VAC. 7600 outputs are not rated for 240 VAC.
7600 will require an additional wire (L2) for operation. Short TW-TR terminals. C1, C2, ZC, and ZR are unused.
Set low limit on 7600 to OFF.
Available operating limit and/or differential ranges are not equivalent. Compare the settings to the AquaSmart ranges before replacing.
11D82-1
11D31-1
1131-102
1127-2
11A79-2
7600A or 7600B
(Based on System
Voltage
Requirements)
Not a suitable replacement if SPDT switch action is required; only break-on-rise available on 7600.
7600 outputs are not rated for 240 VAC.
7600 will require an additional wire (L2) for operation. Short TW-TR terminals. C1, C2, ZC, and ZR are unused.
Set low limit on 7600 to OFF.
1127-9
7600A or 7600B
(Based on System
Voltage
Requirements)
Not a suitable replacement if SPDT switch action is required; only break-on-rise available on 7600.
7600 outputs are not rated for 240 VAC.
7600 will require an additional wire (L2) for operation. Short TW-TR terminals. C1, C2, ZC, and ZR are unused.
Set low limit on 7600 to OFF.
Available operating limit and/or differential ranges may not be equivalent. Compare the settings to the AquaSmart ranges before
replacing.
11B27-9
7600A or 7600B
(Based on System
Voltage
Requirements)
Requires the addition of a manual-reset high limit.
Make sure 7600 outputs do not exceed 7.4A @ 120 VAC. 7600 outputs are not rated for 240 VAC.
7600 will require an additional wire (L2) for operation. Short TW-TR terminals. C1, C2, ZC, and ZR are unused.
Set low limit on 7600 to OFF.
Available operating limit and/or differential ranges are not equivalent. Compare the settings to the AquaSmart ranges before replacing.
8J48A-209
7600A or 7600B
(Based on System
Voltage
Requirements)
To use with a millivolt system an appropriate voltage relay with isolated gold plated contacts must be added to switch the millivolt circuit.
Notes
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
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
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.
y Carefully follow the outlined procedures for temperature
sensor installation to ensure accurate water
temperature sensing and effective control operation.
y Make sure the plumbing for domestic hot water has
anti-scald valve protection.
Figure 4a - Installation of Temperature Sensor in Immersion Well
Sensor must butt against end
Brass Fitting
Temperature Sensor
Copper Well Tube
AquaSmart Boiler Control Manual
Sensor connects to Beckett AquaSmart
7
Installing the 2-in-1 Sensor
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.
Explosion,
Burn and Scald Hazards
Excessive water temperatures could cause explosion,
burns, scalding, pressure relief flooding and fitting leaks.
Leak, Burn, and Scald
Hazards
Incompatible thread sealants could severely damage
the sensor threads.
y The sensor must be installed in the proper location
for correct low water cut-off (LWCO) operation in
accordance with the Boiler Manufacturer’s
instructions.
y The 2-in-1 Sensor shall only be installed by a trained
professional.
y Only use Teflon® Tape or Rectorseal® No. 5® (soft-set).
y The 2-in-1 sensor body is installed directly into the
boiler wall tapped hole in place of an immersion well.
y DO NOT use any anaerobic fast-setting sealants
such as, but not limited to, Loctite®, Leak Lock®,
Permatex®, or Gasoila®.
y Carefully follow the outlined procedures for temperature
sensor installation to ensure accurate water
temperature sensing and effective control operation.
y Call RWB Technical Services at 1(800)645-2876 to
confirm, if unsure.
y Make sure the plumbing for domestic hot water has
anti-scald valve protection.
For proper operation, there
must be a secure electrical bond
between the green sensor wire from the sensor and
the boiler metal vessel in direct contact with the boiler
water. Failure to secure an electrical bond will result in
the AquaSmart locking out and displaying, “LOCKOUT
- LOW WATER”.
y Follow all applicable safety codes, rules and guidelines
for installing an immersion well. Improper installation
can result in the Boiler overheating.
Figure 5 - Overall Dimensions & Specifications
B
A
C
1-1/8” hex
A
B
C
Lead Length
Insulation Depth
Insertion Depth
76002N1S01
8-1/4”
1-1/2”
1-5/8”
Storage Temperature Range
-40° to 250°F
76002N1S02
6-1/4”
3-1/2”
1-5/8”
Operating Temperature Range
-32° to 250°F
76002N1S05
5”
4-3/4”
1-5/8”
Maximum Pressure
250 PSIG
76002N1S06
8-1/4”
1-1/2”
7/8”
Installation Torque Range (Screw-in)
185 - 200 in/lbs.
Part No.
8
Specifications
2-in-1 Installation Instructions
Figure 6 - Sensor lead & ground screw connections
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.
2. Apply pipe sealant to the 2-in-1 sensor threads and
install it securely into the port. BECKETT
RECOMMENDS ONLY TO USE TEFLON TAPE OR
RECTORSEAL NO. 5 PIPE SEALANT.
3. Tighten with 1-1/8” open end or box wrench. Pipe
wrenches, pliers, and adjustable wrenches will
damage/round-off the hex.
4. Securely install the AquaSmart control to the sensor.
Plug the 2-in-1 Sensor RJ connector (phone jack style)
into the receptacle (Item a, Figure 6) on the control.
5. Route the 36” green wire through the AquaSmart
bottom rectangular slot (Item c, Figure 6). Securely
install the fork connector of the 36” ground wire and
the ground wire from the 2-in-1 sensor under the
ground screw at the bottom of the control (Item b,
Figure 6).
a
c
b
Figure 7 - Ground Clamp and Grounding Wire
6. Thoroughly clean the pipe surface and securely
tighten the pipe clamp on the water inlet pipe to the
boiler as close to the boiler as possible.
d
7. Route the 36” green ground wire to the pipe clamp
then cut to proper length, if necessary.
8. Strip the wire and insert the stripped end into hole on
the pipe clamp (item d, Figure 7). Tighten retaining
screw against the wire making sure that you have
good contact.
9. Complete control wiring and fill the appliance with
water to the pressure required, according to appliance
manufacturer’s instructions. Make sure all air is
purged from the system and there are no leaks. Turn
on power to the appliance and observe one call for
heat cycle with shut off at set temperature.
Test the Low Water Cut-off (LWCO) Safety Function
WARNING! Avoid touching or shorting the live
terminals during this test.
Turn electric power ON to energize AquaSmart control.
Perform the following tests to verify the LWCO function.
• For AquaSmart 7600A: Remove the green sensor
lead from the ground screw. The sensor should cause
the AquaSmart display to indicate, “LOCKOUT – LOW
WATER”. If it does not, replace the sensor.
• For AquaSmart 7600B: Remove the green sensor
lead from the ground screw and remove both the B1 and
B2 (24 Vac) leads from their terminals. The sensor should
cause the AquaSmart display to indicate, “LOCKOUT –
LOW WATER”. If it does not, replace the sensor.
• Attach wires and tighten terminal screws securely
when testing is complete.
AquaSmart Boiler Control Manual
Figure 8 - Sensor Water Detection Method
AquaSmart
Boiler Control
2-IN-1 SENSOR
Ground Screw
Water Not Present
Water Present
Ground Wire
Pipe Clamp
Incomplete
Circuit
Complete
Circuit
Water Inlet
The AquaSmart 2-in-1 Sensor uses the “conduction”
method to detect whether water is present in the
boiler. This is done by using the water in the boiler
itself to “conduct” a signal and complete an electrical
circuit. It is necessary that the ground wire from the
sensor be bonded to the boiler wall (not the jacket unless the jacket is bonded to the boiler wall). When
water is not present, there is no “conduction” and the
circuit is incomplete.
For the AquaSmart we recommend that a grounding
pipe clamp be mounted to the water inlet pipe, and
that a ground wire be bonded from the pipe clamp to
the green terminal inside the AquaSmart control. The
2-in-1 sensor green “ground wire” shall also be
bonded to the green terminal in the AquaSmart
control.
9
Installing the AquaSmart Control
(Refer back to Figure 3 for appropriate mounting method).
Figure 9 - Mounting Clamp and Screw for Immersion Well
For clarity, the printed circuit board is not shown.
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. Plug the temperature sensor lead terminal into the
receptacle on the control base. See Figure 10.
Figure 10 - Temperature Sensor Lead/Receptacle
Appliance Surface
1. Use the AquaSmart mounting template to locate the
mounting holes in a desired location on mounting
surface. The template can be found in the back of
this manual.
2. Use (3) #8 x 3/4” self drilling screws (.110 hole
diameter if pre-drilling) included in the installation
kit. Run screws into mounting surface, leaving a
1/4” space between bottom of screw head and
mounting surface.
3. Open the cover of the AquaSmart control to expose
key hole locations in plastic case. Align key holes
over mounting screws and secure in place.
4. Plug the temperature sensor lead terminal into the
receptacle on the control base. See Figure 10.
5. If necessary, use the 48” cable extension to connect
sensor to control base. Refer back to Figure 3.
Wiring
Electrical Shock, Fire,
Explosion and Burn Hazards
This control must be installed, adjusted and put
into operation only by a trained, licensed, qualified
professional or service agency in accordance with
the latest revision of the National Electric Code ANSI/
NFPA 70 (Canada CSA C22.1) state, local codes and
authorities having jurisdiction.
y Follow the appliance manufacturer’s wiring diagrams
and note all safety controls.
y Typical safety controls include high temperature or
pressure limits, low water cutoffs, anti-scald valves,
pressure relief valves and water feed valves.
y Verify all limits and safety controls are installed and
functioning correctly, as specified by the appliance
manufacturer, applicable safety standards, codes
and all authorities having jurisdiction.
y Provide ground wiring to the appliance, burner and
controls.
10
Electrical Shock Hazard.
Can Cause Severe Injury,
Death, or Equipment Damage.
Disconnect power before wiring to prevent electrical
shock or equipment damage.
y All wiring must comply with local electrical codes and
ordinances. The limits given in the specifications
section must not be exceeded when applying this
control. Terminals on the AquaSmart are approved for
copper wire only.
y Refer to the label on the inside of the AquaSmart door or
to Technical Specifications in this manual for Electrical
ratings and maximum load information. Use manufacturer
instructions when wiring controlled equipment or refer to
typical hookups in Figure 12 through Figure 17.
y More than one service switch may be needed to
disconnect all power to the AquaSmart. The optional
power disconnect switch interrupts power to the
AquaSmart control. Depending on system wiring, some
terminals and connections (most notably ZR and the input
to the optional power disconnect switch) may still be live.
Explosion Hazard. Can
Cause Severe Injury, Death
or Property Damage.
Use this product only in systems with a pressure relief
valve.
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.
B1 terminal is a 1/4 in. tab terminal (quick connect).
Some Thermostats Are
Polarity Sensitive
Reversed polarity could cause erratic cycling of the
boiler control.
y Connect the red thermostat wire (from the RH or R
terminal of the thermostat) to the TR terminal on the
control.
7600B only: TERMINALS TR (Z or
hot) and B2 (TV or ground) offer a
24-volt supply for operating other 24 VAC equipment on
the boiler. IMPORTANT: TO PREVENT DAMAGE TO
THE CONTROL, DO NOT OVERLOAD THE
TRANSFORMER. The AquaSmart is equipped with a
30VA transformer. Make sure that the total load,
including the burner circuit and TR & B2 connections do
not exceed 30VA. See Figure 11.
How to calculate VA - Add all AMP ratings of 24VAC
components in this circuit and multiply sum by 24 volts.
(Example: .4 + .4 + .2 + .2 = 1.2A x 24V = 28.8 VA)
When powering multiple circulators
from the C1 and C2 terminals, take
extra care not to exceed the output’s reading. If the sum
of the full load amps of all the circulators exceeds the
output’s rating, use the C1 and C2 terminals to power the
coil of a multiple-pole contactor; the contacts of which can
be wired to switch L1 to each circulator.
To wire a vent damper to the 7600B,
first remove jumper plug from 6position receptacle and then connect 6-pin connector of
the vent damper to the receptacle. See Figure 11. Once
the 7600B is operated with a vent damper, it will not
function without one (even if the jumper plug is replaced).
Water Flow Symbols Key (Figures 12 through 17)
y Connect the white thermostat wire (from the W
terminal of the thermostat) to the TW terminal on the
control.
- Air Vent
- Air Separator
Figure 11 - TR, B2, & Vent Damper Connections
- Expansion Tank
TR
- Isolation Valve
6-Position Vent
Damper Receptacle
- Pressure Regulator
Z
- Zone Valve
B2
- Check Valve
Observe proper polarity when wiring
L1 and L2. If polarity is reversed, a
call for heat on the ZR input may not be recognized.
AquaSmart Boiler Control Manual
- Circulator
11
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:
SK10019
1. Set “DHWP OFF” (default, see programming section for instructions)
2. Set “C1 on TT” (default, see programming section for instructions)
TW
TR
L2
C1 C2 ZC ZR B1 B2
FIELD/MFR.
SUPPLIED
SERVICE
SWITCH
BLACK
WHITE
HOT
P1
CIRCULATOR
120 VAC
12
RED
LOW VOLTAGE
THERMOSTAT
WHITE
120 VAC
BLACK
NEUTRAL
L1
WHITE
7600A:
120 VAC BURNER OR
GAS IGNITION SYSTEM
7600B:
24 VAC GAS
IGNITION SYSTEM
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. Set “C1 on TT” (default, see programming section for instructions)
3. Circulator-on and -off delays will only affect zone 1
SK10020
CIRCULATOR
120 VAC
P3*
TW
TR
WHITE
RED
ZONE
1
LOW VOLTAGE
THERMOSTAT
6
ZONE
RELAY
5
4
3
L2
L1
C1 C2 ZC ZR B1 B2
2/N
T
1/H
T
ZONE
3*
LOW VOLTAGE
THERMOSTAT
CIRCULATOR
120 VAC
P1
CIRCULATOR
120 VAC
7600A:
120 VAC BURNER OR
GAS IGNITION SYSTEM
7600B:
24 VAC GAS
IGNITION SYSTEM
P2
6
ZONE
RELAY
5
4
3
NEUTRAL
WHITE
120 VAC
HOT
FIELD/MFR.
SUPPLIED
SERVICE
SWITCH
BLACK
AquaSmart Boiler Control Manual
2/N
T
1/H
T
ZONE
2
LOW VOLTAGE
THERMOSTAT
CONTINUED ON NEXT PAGE ►
13
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.
CIRCULATOR
120 VAC
P3*
6
ZONE
RELAY
5
4
3
2/N
T
1/H
T
LOW VOLTAGE
THERMOSTAT
CIRCULATOR
120 VAC
SK10032
ZONE
3*
P2
TW
TR
6
ZONE
RELAY
5
4
3
L2
L1
C1 C2 ZC ZR B1 B2
2/N
T
1/H
T
LOW VOLTAGE
THERMOSTAT
CIRCULATOR
120 VAC
7600A:
120 VAC BURNER OR
GAS IGNITION SYSTEM
7600B:
24 VAC GAS
IGNITION SYSTEM
ZONE
2
P1
6
ZONE
RELAY
5
4
3
NEUTRAL
WHITE
120 VAC
HOT
14
FIELD/MFR.
SUPPLIED
SERVICE
SWITCH
BLACK
2/N
T
1/H
T
ZONE
1
LOW VOLTAGE
THERMOSTAT
* Additional zones can be added by duplicating the
plumbing and wiring of zone 3, adding additional
transformers as needed.
Figure 14 - 7600A/B alternate multi-zone connections
with or without a tankless coil
Water Flow:
AIR
VENT
AIR
SEPARATOR
GENERAL
CIRCULATOR
SK10033
Z
ZONE 1
24 VAC
ZONE
VALVE
Z
ZONE 2
24 VAC
ZONE
VALVE
Z
HEATING
ZONE
2
HEATING
ZONE
1
ZONE 3*
24 VAC
ZONE
VALVE
HEATING
ZONE
3*
EXPANSION
TANK
COLD
WATER
INLET
Control Wiring (Option 1): 7600B only
1. Set “DHWP OFF” (default, see programming section for instructions)
2. Set “C1 on TT” (default, see programming section for instructions)
3. Circulator-on delay will affect all zones. Circulator-off delay will have no effect.
4. Up to two 24 VAC zone valves can be powered with the 7600B. Add an additional transformer as shown
for every two or less valves over the original two.
5. Ensure there are no jumpers between the terminals of the zone valves.
ZONE 1
LOW VOLTAGE
THERMOSTAT
ZONE 2
24 VAC
ZONE VALVE
ZONE 3*
24 VAC
ZONE VALVE
Taco
550
Honeywell
V8043E, V8044E
Honeywell
V8043F
1
SK10021
3
TR
ZONE 3*
LOW VOLTAGE
THERMOSTAT
ZONE 1
24 VAC
ZONE VALVE
MTR
TW
ZONE 2
LOW VOLTAGE
THERMOSTAT
Y
MTR
Y
TR
TH
MTR
2
R
TH/
TR
R
T
Z
TV
L2
NEUTRAL
120 VAC
HOT
L1
WHITE
BLACK
FIELD/MFR.
SUPPLIED
SERVICE
SWITCH
40 VA
TRANSFORMER
C1 C2 ZC ZR B1 B2
GENERAL
CIRCULATOR
24 VAC GAS
IGNITION SYSTEM
CIRCULATOR
120 VAC
CONTINUED ON NEXT PAGE ►
AquaSmart Boiler Control Manual
15
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
1. Set “DHWP OFF” (default, see programming section for instructions)
2. Set “C1 on TT” (default, see programming section for instructions)
3. Circulator-on delay will affect all zones. Circulator-off delay will have no effect.
4. 24 VAC zone valves cannot be powered directly with the 7600A. Add an additional transformer for every two
or less valves.
5. Ensure there are no jumpers between the terminals of the zone valves.
ZONE 1
LOW VOLTAGE
THERMOSTAT
ZONE 3*
LOW VOLTAGE
THERMOSTAT
ZONE 1
24 VAC
ZONE VALVE
ZONE 2
24 VAC
ZONE VALVE
ZONE 3*
24 VAC
ZONE VALVE
Taco
550
Honeywell
V8043E, V8044E
Honeywell
V8043F
1
MTR
SK10046
ZONE 2
LOW VOLTAGE
THERMOSTAT
3
Y
MTR
Y
2
R
R
TR
NEUTRAL
120 VAC
HOT
16
L1
WHITE
BLACK
FIELD/MFR.
SUPPLIED
SERVICE
SWITCH
40 VA
TRANSFORMER
C1 C2 ZC ZR B1 B2
GENERAL
CIRCULATOR
CIRCULATOR
120 VAC
120 VAC
BURNER OR
GAS IGNITION
SYSTEM
TH
MTR
TW
L2
TR
40 VA
TRANSFORMER
TH/
TR
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:
SK10023
1. Set “DHWP on ZR” (see programming section for instructions)
2. Set “C1 on TT” (default, see programming section for instructions)
3. Circulator-on and -off delay will only affect zone 1.
TW
TR
WHITE
RED
ZONE
1
LOW VOLTAGE
THERMOSTAT
L2
NEUTRAL
120 VAC
HOT
L1
C1 C2 ZC ZR B1 B2
P2
WHITE
BLACK
FIELD/MFR.
SUPPLIED
SERVICE
SWITCH
CIRCULATOR
120 VAC
P1
CIRCULATOR
120 VAC
7600A:
120 VAC BURNER OR
GAS IGNITION SYSTEM
7600B:
24 VAC GAS
IGNITION SYSTEM
6
ZONE
RELAY
5
4
DHW
LIMIT
CONTROL
3
AquaSmart Boiler Control Manual
2/N
T
1/H
T
17
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.
Water Flow:
AIR
VENT
AIR
SEPARATOR
P2
SK10035
P1
INDIRECT
DHW
DHW
ZONE
HEATING
ZONE
1
P3
HEATING
ZONE
2
P4*
HEATING
ZONE
3*
EXPANSION
TANK
COLD
WATER
INLET
CONTINUED ON NEXT PAGE ►
18
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.
CIRCULATOR
120 VAC
P4*
6
ZONE
RELAY
5
4
3
2/N
T
1/H
T
ZONE
3*
LOW VOLTAGE
THERMOSTAT
SK10022
CIRCULATOR
120 VAC
DHW
LIMIT
CONTROL
TW
TR
P3
6
ZONE
RELAY
5
4
3
L2
L1
C1 C2 ZC ZR B1 B2
2/N
T
1/H
T
LOW VOLTAGE
THERMOSTAT
CIRCULATOR
120 VAC
P1
CIRCULATOR
120 VAC
7600A:
120 VAC BURNER OR
GAS IGNITION SYSTEM
7600B:
24 VAC GAS
IGNITION SYSTEM
ZONE
2
P2
6
ZONE
RELAY
5
4
3
NEUTRAL
WHITE
120 VAC
HOT
FIELD/MFR.
SUPPLIED
SERVICE
SWITCH
BLACK
2/N
T
1/H
T
ZONE
1
LOW VOLTAGE
THERMOSTAT
CONTINUED ON NEXT PAGE ►
AquaSmart Boiler Control Manual
19
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.
4. DHW zone will not have priority over heating zones.
CIRCULATOR
120 VAC
P4*
6
ZONE
RELAY
5
4
3
2/N
T
1/H
T
ZONE
3*
LOW VOLTAGE
THERMOSTAT
CIRCULATOR
120 VAC
P3
ZONE
RELAY
6
5
4
3
2/N
T
1/H
T
LOW VOLTAGE
THERMOSTAT
CIRCULATOR
120 VAC
SK10024
ZONE
2
P2
TW
6
TR
ZONE
RELAY
5
4
3
L2
L1
C1 C2 ZC ZR B1
B2
2/N
T
1/H
T
ZONE
1
LOW VOLTAGE
THERMOSTAT
7600A:
120 VAC BURNER
OR GAS IGNITION
SYSTEM
7600B:
24 VAC GAS
IGNITION SYSTEM
CIRCULATOR
120 VAC
P1
ZONE
RELAY
6
5
4
DHW
LIMIT
CONTROL
3
NEUTRAL
WHITE
120 VAC
HOT
2/N
T
1/H
T
FIELD/MFR. BLACK
SUPPLIED
SERVICE
SWITCH
CONTINUED ON NEXT PAGE ►
20
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. A call for heat on TT (from the DHW zone) will change boiler set point to the high limit. All other zones will
heat to the reset temperature determined by the HeatManager.
5. Ensure that the zone panel and AquaSmart are powered from the same service switch.
SK10036
ZONE 1
LOW
VOLTAGE
THERMOSTAT
ZONE 3*
ZONE 2
LOW
LOW
VOLTAGE
VOLTAGE THERMOSTAT
THERMOSTAT
DHW
LIMIT
CONTROL
TW
TR
X END
X SWITCH
ZONE
PANEL
Z1
Z2
Z3*
L1
L2
L2
NEUTRAL
120 VAC
HOT
L1
WHITE
C1 C2 ZC ZR B1 B2
P1
BLACK
FIELD/MFR.
SUPPLIED
SERVICE
SWITCH
ZR ZC
CIRCULATOR
120 VAC
7600A:
120 VAC BURNER OR
GAS IGNITION SYSTEM
7600B:
24 VAC GAS
IGNITION SYSTEM
P3
P2
P4*
CIRCULATOR
120 VAC
CIRCULATOR
CIRCULATOR
120 VAC
120 VAC
AquaSmart Boiler Control Manual
21
* Additional zones can be added by duplicating the
plumbing and wiring of zone 3, adding additional
transformers as needed.
Figure 17 - 7600A/B alternate multi-zone connections
with Indirect Domestic Hot Water (DHW)
Water Flow:
AIR
VENT
SK10037
AIR
SEPARATOR
Z
Z
Z
Z
DHW ZONE
24 VAC
ZONE VALVE
ZONE 1
24 VAC
ZONE
VALVE
ZONE 2
24 VAC
ZONE
VALVE
ZONE 3*
24 VAC
ZONE
VALVE
HEATING
ZONE
1
HEATING
ZONE
2
INDIRECT
DHW
DHW
ZONE
HEATING
ZONE
3*
EXPANSION
TANK
COLD
WATER
INLET
GENERAL
CIRCULATOR
CONTINUED ON NEXT PAGE ►
22
* 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
1. Set “DHWP on ZR” (see programming section for instructions)
2. Set “C1 on BOTH” (see programming section for instructions)
3. Circulator-on delay will affect all zones. Circulator-off delay will have no effect.
4. Up to two 24 VAC zone valves can be powered with the 7600B. Add an additional
transformer as shown for every two or less valves over the original two.
5. Ensure there are no jumpers between the terminals of the zone valves.
ZONE 3*
LOW VOLTAGE
THERMOSTAT
DHW ZONE
24 VAC
ZONE VALVE
ZONE 3*
24 VAC
ZONE VALVE
Honeywell
V8043F
Honewell
V8043E, V8044E
TR
TH
MTR
TH/
TR
Y
MTR
R
ZONE 1
LOW VOLTAGE
THERMOSTAT
ZONE 2
24 VAC
ZONE VALVE
Honewell
V8043F
Taco
550
SK10038
TH
MTR
TH/
TR
TR
L2
L1
T
6
ZONE
RELAY
5
C1 C2 ZC ZR B1 B2
DHW
LIMIT
CONTROL
4
3
NEUTRAL WHITE
HOT
2
Z
TV
120 VAC
1
MTR
3
TW
24 VAC GAS
IGNITION SYSTEM
BLACK
FIELD/MFR.
SUPPLIED
SERVICE
SWITCH
R
ZONE 2
LOW VOLTAGE
THERMOSTAT
ZONE 1
24 VAC
ZONE VALVE
TR
Y
2/N
T
1/H
T
40 VA
TRANSFORMER
GENERAL
CIRCULATOR
CIRCULATOR
120 VAC
CONTINUED ON NEXT PAGE ►
AquaSmart Boiler Control Manual
23
* 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
1. Set “DHWP on ZR” (see programming section for instructions)
2. Set “C1 on BOTH” (see programming section for instructions)
3. Circulator-on delay will affect all zones. Circulator-off delay will have no effect.
4. 24 VAC zone valves cannot be powered directly with the 7600A. Add an
additional transformer as shown for every two or less valves.
5. Ensure there are no jumpers between the terminals of the zone valves.
ZONE 3*
LOW VOLTAGE
THERMOSTAT
DHW ZONE
24 VAC
ZONE VALVE
ZONE 3*
24 VAC
ZONE VALVE
Honeywell
V8043F
Honewell
V8043E, V8044E
TR
TH
MTR
TH/
TR
Y
MTR
R
ZONE 1
LOW VOLTAGE
THERMOSTAT
ZONE 1
24 VAC
ZONE VALVE
ZONE 2
24 VAC
ZONE VALVE
Honewell
V8043F
Taco
550
TR
SK10047
ZONE 2
LOW VOLTAGE
THERMOSTAT
TH
MTR
TH/
TR
1
MTR
3
2
TW
TR
6
ZONE
RELAY
5
L2
L1
C1 C2 ZC ZR B1 B2
120 VAC
BURNER OR
GAS IGNITION
SYSTEM
NEUTRAL WHITE
120 VAC
HOT
BLACK
FIELD/MFR.
SUPPLIED
SERVICE
SWITCH
3
2/N
T
1/H
T
40 VA
TRANSFORMER
40 VA
TRANSFORMER
GENERAL
CIRCULATOR
CIRCULATOR
120 VAC
24
DHW
LIMIT
CONTROL
4
Y
R
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.


Press “ENTER (RESET)” if the value is correct, or
“CANCEL (BACK)” if it is not.
B. Temperature Low Limit
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.
Figure 18 - AquaSmart Keypad
1. In any mode or screen other than an OPTION submenu, press the “LOW LIMIT” key.
2. The following screen will be displayed:


The temperature displayed is the current setting.
Use the “▲” and “▼” keys to select the desired
setting. Tap the button to increase or decrease the
temperature by 1°, or hold it to increase or
decrease the temperature by 5° at a time. The
control will not allow you to select out-of-range
values. For cold-start operation, turn the low limit
off by pressing the down arrow key repeatedly until
OFF is displayed.
IMPORTANT: To prevent flue gas condensation
and reduce fatigue caused by thermal cycling on
conventional (non-condensing) boilers, the LOW
LIMIT set point should be 150° F or above.
To ensure smooth appliance operation, the AquaSmart
requires a separation between the High and Low limits
no less than the greater differential plus 5°F. For
example: If the HIGH LIMIT is set to 180°F, the HIGH
DIFF to 20°F, and the LOW DIFF to 10°F, the control will
not allow a LOW LIMIT above 155°F (180°F - 20°F [the
greater of the two differentials] - 5°F = 155°F).
A. Temperature High Limit
1. In any mode or screen other than an OPTION submenu, press the “HIGH LIMIT” key.
2. The following screen will be displayed:


The temperature displayed is the current setting.
Use the ▲ and ▼ keys to select the desired setting.
Tap the button to increase or decrease the
temperature by 1°, or hold it to increase or
decrease the temperature by 5° at a time. The
control will not allow you to select out-of-range
values.
3. Press the “ENTER (RESET)” key.
4. The control will ask you to confirm the setting with
AquaSmart Boiler Control Manual
NOTE: Appliance manufacturer’s temperature
requirements supersede this recommendation.
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.
C. Temperature High Limit Differential
1. In any mode or screen other than an OPTION submenu, press the “HIGH 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. Tap the button to increase or decrease the
temperature by 1°, or hold it to increase or
decrease the temperature by 5° at a time. The
control will not allow you to select out-of-range
values.
25
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 submenu, 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. Tap the button to increase or decrease the
temperature by 1°, or hold it to increase or decrease
the temperature by 5° at a time. The control will not
allow you to select out-of-range values.
Press the “ENTER (RESET)” key.
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.


Programming Additional Options
Note: Some additional menus may be visible that are not included in the following pages. Those menus are nonfunctional and reserved for future use.
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.
A. Changing the Heat Manager Settings
1. In any mode or screen other than an OPTION submenu, press the “OPTION” key.
2. The following screen will be displayed:


Press “ENTER (RESET)” key.
3. The following screen will be displayed:


26
a. To toggle the fuel economizer on or off: Press
“ENTER (RESET)” key.
b. To Adjust the Heat Manager efficiency setting:
Press the “▲” or “▼” keys until the following
screen is displayed:


Press “ENTER (RESET)” to toggle the comfort
setting between HI, MED, and LOW. See
“HeatManager Technology” section for an
explanation of the efficiency settings.
4. Press “CANCEL (BACK)” to exit.
B. Viewing the Boiler Cycle History
1. In any mode or screen other than an OPTION submenu, press the “OPTION” key.
2. The following screen will be displayed:


Press the “▲” or “▼” keys until the following screen
is displayed:


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.
Key (for steps B3 & B5):
A = Current cycle data being displayed (1 being the most recent cycle)
B = Burner on time in minutes:seconds
C = Burner off time in minutes:seconds
D = Average water temperature over burner off-on cycle.
E = Cycle start reason:
LL = burner turned on to maintain low limit.
TT = burner turned on to satisfy a thermostat call for heat.
ZR = burner turned on to satisfy a ZR call for heat.
F = Cycle end reason:
CFH = the call for heat (from T-T or ZR) was satisfied
HL = the boiler water temperature reached the high operating limit.
LL = the boiler water temperature reached the low limit plus low
differential.
Lockout reasons (see Lockout Troubleshooting section for more
details): SENSOR ERR, SELF-CHECK, CANCEL
C. Changing the Circulator Settings
The circulator-off delay keeps the C1 output energized
for the set time after a call for heat ends. This helps to
increase the efficiency of the system by transferring
more heat into the home instead of letting it sit in the
boiler.
The circulator-on delay holds the C1 output off for the
set time at the start of a call for heat. This helps the
boiler to heat up more quickly and spend less time in the
condensing range (if applicable).
Both circulator delays are selectable from 0 to 4 minutes
and 15 seconds.
AquaSmart Boiler Control Manual
1. In any mode other than an OPTION sub-menu,
press the “OPTION” key. The following screen will
be displayed:


2. Press the “▲” and “▼” keys until the following
screen is displayed:


3. Press “ENTER (RESET)”. The following screen
will be displayed:


a. To change the circulator-off delay after a call for
heat ends, press “ENTER (RESET)”. The
following screen will be displayed.


The time displayed is the current setting in
minutes:seconds.
Press the “▲” and “▼” keys to select the
desired setting a press “ENTER (RESET)”.


Press “ENTER (RESET)” if the value is correct,
or “CANCEL (BACK)” if it is not.
b. To change the circulator-on delay when a call for
heat begins, press the “▲” and “▼” keys until the
following screen is displayed:


The time displayed is the current setting in
minutes:seconds.
Press “ENTER (RESET)”. The following screen
will be displayed.


Press the “▲” and “▼” keys to select the
desired setting and press the “ENTER
(RESET)” key.


Press “ENTER (RESET)” if the value is correct,
or “CANCEL (BACK)” if it is not.
27
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. Changing Domestic Hot Water Priority
(DHWP) Setting
The Domestic Hot Water Priority function temporarily
overrides the HeatManager Dynamic Temperature Reset
functionality when there is a call for domestic hot water.
This ensures that hot water will be produced when
needed. It also temporarily turns off either the C1 or ZC
outputs (depending on the DHWP and circulator source
settings) to give priority to the DHWP zone when it calls
for heat. See Figures 8-13 for examples of how to use
these settings for maximum benefit.
1. In any mode other than an OPTION sub-menu, press
the “OPTION” key. The following screen appears:


2. Press the “▲” and “▼” keys until the following
screen is displayed:


3. Press “ENTER (RESET)”. The following screen
will be displayed:


4. Press the “▲” and “▼” keys until the following
screen is displayed:


5. Press “ENTER (RESET)” to toggle between OFF,
ON TT, and ON ZR settings. See wiring diagrams in
Figures 11 thru 13 for proper wiring with DHWP on.
6. Press “CANCEL (BACK)” to exit.
28
E. Selecting Fahrenheit or Celsius
Temperature Display
1. In any mode other than an OPTION sub-menu, press
the “OPTION” key. The following screen appears:


2. Press the “▲” and “▼” keys until the following
screen is displayed:


3. Press “ENTER (RESET).” The following screen
will be displayed:


4. Press the “▲” and “▼” keys until the following
screen is displayed:
()

5. Press “ENTER (RESET)” to toggle between °F and °C.
6. Press “CANCEL (BACK)” to exit.
F. Changing Low Water Cut-Off (LWCO)
Setting
The Low Water Cut-off function is active when the 2-in-1
sensor is used with the AquaSmart control to prevent the
burner from firing without sufficient water present in the
boiler. The DELAY OFF time can be selected to delay
the response of the control to a low-water condition. The
DELAY ON time can be selected to delay the response
of the control when the boiler water returns to a sufficient
level. The RESET function can be set to AUTO or MAN
(manual) to control how the AquaSmart will return from a
LOCKOUT LOW WATER condition when the boiler
water returns to a sufficient level. In AUTO, the
AquaSmart returns automatically. In MAN (manual), the
ENTER(RESET) button must be held for 5 seconds.
1. In any mode other than an OPTION sub-menu, press
the “OPTION” key. The following screen appears:


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. If DELAY OFF is displayed, Press “ENTER
(RESET)” again, the following screen appears:


7. Press “ENTER (RESET)” to accept the settings or
press “CANCEL (BACK)” to go to the previous
screen.
8. The same steps are used to change the DELAY ON
time setting.
9. If the RESET function has been selected, press
“ENTER (RESET)” to change between MAN and
AUTO. Press “CANCEL (BACK)” to go to the
previous screen.
10. Press “CANCEL (BACK)” to exit LWCO menu.
AquaSmart Boiler Control Manual
29
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.
○
○
Burner is turned off.
Circulator is turned off after circulator-off delay
○
Burner is turned on as long as the water temperature is below
the high limit.
○
Burner is turned off.
○
Burner is turned off until the water temperature falls below the
high limit minus the high differential.
○
Circulator is turned on for 2 seconds to help prevent seizure.
○
Burner, Circulator, and ZC are turned off until the control is
reset. The lockout condition may reset automatically or require
a manual reset. See lockout section for more information.
○
Circulator and ZC are turned on to help prevent system freezeup by circulating the boiler water to all zones.
○
If DHWP is set on T-T and there is a T-T call for heat, ZC is held
off for up to 20 minutes to give the DHW zone priority.
If DHWP is set on ZR and there is a ZR call for heat, C1 is held
off for up to 20 minutes to give the DHW zone priority.
AquaSmart locks out
B1 has been energized for 1 hour or
AquaSmart has been locked out for 1 hour
Burner is turned on until the water temperature reaches the low
limit plus the low differential.
ZC is turned off until the water temperature reaches the low limit
plus the low differential.
○
Control Checkout Procedure
These procedures are typical for the default configuration
of the control.
1. Wire and configure the AquaSmart as required by the
application.
2. NOTE: Do not apply a thermostat call for heat to the
AquaSmart at this time. Allow the burner to heat the
water to above the low limit, plus the low limit differential.
The display should read “HEATING WTR” on the LCD
display (B1 should be energized and C1 and ZC should
be off).
3. When the water is sufficiently heated, the burner will turn
off and the display should read “STANDBY”. Now ZC
should be energized and B1 and C1 should be off.
4. Apply a call for heat from the thermostat. The burner and
circulator should now also turn on (B1, C1, and ZC should
now all be energized). Allow the AquaSmart to heat the
water to the high limit. During this step the display should
read “HEATING WTR or “HEATING DHW”.
30
5. Once the high limit is reached, the burner should turn off
(C1 and ZC should now be energized, and B1 should be
off). The display should now read “CIRCULATING”.
6. Set the thermostat back, so that it is no longer calling for
heat. The circulator should turn off (now ZC should be
energized and B1 and C1 should be off). The display
should now read “STANDBY”.
Do not leave the installation
site if the AquaSmart
operation did not match the descriptions in
any of the above steps. Make all necessary
adjustments until the correct operation is
verified. The above procedure helps to verify
that the high and low limits are working
properly and that the thermostat is wired
correctly to the control.
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 240°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°). The circulator will
continue to operate until the call for heat
is satisfied.
300
50
Figure 20 - Warm Start Operation (Low Limit ► ON)
(To maintain domestic hot water temperature)
High Temperature Differential
(Adjustable 5° to 45°F)
Low Temperature Differential
(Adjustable 10° to 45°F)
Starts the burner when temperature drops to the
HIGH LIMIT DIFFERENTIAL setting.
Shuts burner off when temperature rises to
the LOW LIMIT DIFFERENTIAL setting.
High Temperature Limit
(Adjustable 100° to 240°F)
Low Temperature Limit
(Adjustable 100° to 220°F)
Shuts burner off at HIGH LIMIT set point.
Starts the burner at LOW LIMIT
set point.
Example Shown:
Low Limit = 140°
Differential = 10°
During the OFF cycle with no call for
heat, the burner is turned on at 140° to
maintain the boiler water temperature
and is shut off at 150° (140°+10°).
150
125
200
225
100
250
75
275
50
AquaSmart Boiler Control Manual
175
Example Shown:
High Limit = 200°
Differential = 20°
During a call for heat, the burner will be
shut off at 200° and be turned back on at
180° (200°-20°). The circulator will
continue to operate until the call for heat
is satisfied.
300
31
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.
1. SENSOR ERR - The sensor has either detected an
internal error or is not communicating properly with
the AquaSmart. The AquaSmart will not reset from
this condition until it can detect a properly working
sensor.
2. SELF-CHECK - An internal safety check, such as
the check on the B1 relay contacts, has failed. Hold
ENTER (RESET) key for 5 seconds to reset from
this condition. If the error occurs again, replace the
control.
3. CANCEL - The CANCEL (BACK) key was held for
5 seconds or longer, which temporarily suspends
the control’s operation. The control will resume
normal operation once the CANCEL (BACK) button
is released.
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.
HEATING WTR will be displayed if a non-priority heat
call has caused the burner to be energized.
HEATING DHW will be displayed if a priority heat call
has caused the burner to be energized.
FREEZE RES will be displayed if the burner has
been running for 1 hour or the AquaSmart has been
locked out for 1 hour.
E - Current boiler water temperature measurement
F - Adjusted high limit when economizing
G - Lockout reason (see Lockout section under
“Troubleshooting”.)
Troubleshooting
Lockout
The AquaSmart will lock out if any number of abnormal
conditions are detected.
Frozen Plumbing and
Water Damage Hazard
If the residence is unattended in severely cold
weather, boiler control safety lockout, heating
system component failures, power outages or other
electrical system failures could result in frozen
plumbing and water damage in a matter of hours.
For protection, take preventative actions such as having
a security system installed that operates during power
outages, senses low temperature and initiates an
effective action. Consult your qualified service
technician or a home security agency.
32
HeatManager Technology
The Beckett AquaSmart comes equipped with the
Department of Energy (DOE) 2012 compliant Heat
Manager load-matching energy saving algorithm. The
Heat Manager saves fuel by dynamically changing the
temperature high operating limit to the minimum
temperature necessary to meet the heating demand.
The qualified service technician can adjust the
HeatManager algorithm to maximize comfort or energy
savings.
The HeatManagerTM algorithm is designed to operate the
boiler at its lowest possible temperature while still
meeting the heating demand. By dynamically changing
the boiler temperature, it is designed to reduce the
energy used by the system without sacrificing comfort.
The default HIGH efficiency setting should work best for
most systems. However, there are many system factors
that may have an effect on its ability to react to changes
quickly enough and supply adequate heat, such as
amount of connected radiation, boiler size, system
design temperatures, etc. The efficiency setting adjusts
how aggressively the HeatManagerTM algorithm attempts
to reduce the boiler operating temperature. If a loss of
comfort is experienced, decreasing the efficiency setting
will help regain comfort at the expense of fuel savings
(see section A of “Programming Additional Options” for
instructions on changing the efficiency setting).
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.
□
At shutdown, the temperature and pressure level match
the recommended settings.
□
Note: The 7600 control has no serviceable internal
parts. DO NOT attempt to repair a malfunctioning
control.
The pressure relief valve operation and boiler water feed
system works properly by bleeding some water and
observing the refill cycle.
□
The low water cutoff operation by lowering the water level
until it shuts the burner off.
□
The boiler passages and vent system are clear of
obstructions and operating to the appliance
manufacturer’s specifications and all required clearance
dimensions to combustible materials are met.
□
With combustion test instruments the burner is set to
manufacturer’s specifications.
□
After the system has run through a complete cycle, that
all fittings are free of leaks.
□
A record has been made of all service work and all
temperature control settings and optional functions.
Attach a label or tag to the boiler for future reference.
□
The AquaSmart Installation Manual is left at a suitable
location near the boiler for future reference and the
equipment owner is informed of this.
□
The control door is attached and securely closed.
□
The control is clean and all vents are free of dust, lint or
foreign material.
□
All wiring is tight, terminals are free from corrosion and
insulation is intact.
□
□
There is no physical damage to the case or display.
□
The control is securely mounted to the well or other
mounting support.
□
□
The sensor is in its place, with no evidence of tampering.
□
The control temperatures, differentials and optional
functions are set correctly and working to established
specifications. Consult the service tag or label on the
boiler.
□
A record of service and any adjustments are made to the
service label or tag.
□
The control door is attached and securely closed.
There is no evidence of water damage on the control or
terminals.
The sensor lead on remote mounted units is in good
condition and securely anchored in the immersion well
with the strain relief.
Accessories
AquaSmart Remote Mount Unit Pack • 7600RMU
Includes:
○ Cable Assembly with Coupler
○ Mounting Template
○ Self-drilling Screws (Qty:3)
○ Cable Ty-wrap
AquaSmart Temperature Sensor Unit Pack • 7600TSU
Includes:
○ Temperature Sensor
○ Cable Ty-wrap
○ Joint Compound
○ Installation Instructions
AquaSmart 2-in-1 Sensor Unit Pack • 76002N1S01U
Includes:
○ 2-in-1 Sensor
○ 36” Ground Wire
○ Pipe Clamp for grounding
○ Installation Instructions
AquaSmart Boiler Control Manual
33
Notes Section
34
SK10029
THIS END UP
Mounting Template
Use self-drilling screws supplied in the
7600RMU Remote Mount Kit
-orDrill 0.110” diameter holes
AquaSmart Boiler Control Manual
35
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.
To review the complete warranty policy and duration of coverage for a specific product, or obtain a written
copy of warranty form 61545, please choose one of the following options:
1. Visit our website at: www.beckettcorp.com/warranty
2. Email your request to: rwb-customer-service@beckettcorp.com
3. Write to: R. W. Beckett Corporation, P. O. Box 1289, Elyria, OH 44036
NOTE: Beckett is not responsible for any labor cost for removal and replacement of equipment.
THIS WARRANTY IS LIMITED TO THE PRECISE TERMS SET FORTH ABOVE, AND PROVIDES
EXCLUSIVE REMEDIES EXPRESSLY IN LIEU OF ALL OTHER REMEDIES, AND IN PARTICULAR THERE
SHALL BE EXCLUDED THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE. IN NO EVENT WILL BECKETT BE LIABLE FOR ANY INCIDENTAL OR
CONSEQUENTIAL DAMAGE OF ANY NATURE. Beckett neither assumes, nor authorizes any person to
assume for Beckett, any other liability or obligation in connection with the sale of this equipment. Beckett’s
liability and Customer’s exclusive remedy is limited to the cost of the product.
CORPORATION
USA: P.O. Box 1289 ● Elyria, OH 44036
Canada: R.W. Beckett Canada, Ltd. ● Unit #3, 430 Laird Road ● Guelph, Ontario N1G 3X7
www.beckettcorp.com
Form No. 61738 Rev. 6, Printed in USA 6/11
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