Taco SmartPlus Instruction Sheet

02-516

Backow
Preventer

Thermal

Expansion

Tank

Fixtures

Isolation

Valve

Union

Isolation

Valve

Union

Flow

Check

Valve

Drain
Valve

Hot

Supply

Cold

Supply

Hot Return

Isolation

Valve

Isolation

Valve

Union Union

Isolation

Valve

HOT WATER
SUPPLY LINE

Temperature

Sensor

SMART

®

Backow
Preventer

Thermal

Expansion

Tank

T

emperature

Sensor

Fixtures

Isolation

Valve

Union

Isolation

Valve

Union

Flow

Check

Valve

Drain
Valve

Isolation

Valve

Hot

Supply

Cold

Supply

Hot Return

Isolation

Valve

Union

Union

HOT WATER

RETURN LINE

1

Instruction Sheet

.S. Patent # 8,594,853

U

UPERSEDES: April 7, 2016 EFFECTIVE: March 23, 2017

S

Plant ID# 001-4243

APPLICATION:

The Taco SmartPlus®is designed to increase hot water comfort while con­serving water and energy. By recirculating “cooled” hot water back to the
water heater, the wait for hot water is reduced to seconds. A dedicated hot
water recirculation line within the piping system is required.

PUMP CONTROL OPTIONS:

The SmartPlus has a “Mode Select” toggle switch that allows for 2 operation
modes. “Pulse” or “Smart” mode can be selected using the toggle switch
located on the electronic control board (see Figure 1). A yellow LED indicates
which mode is selected. All operation is automatic, no manual timer or tem­perature setting is required.

• “Pulse” Mode
When set for “Pulse” operation, the SmartPlus

will run for 1 to 10 minutes “ON” and 10 minutes
“OFF” to maintain hot water at all fixtures.

• See #5 Variable Run Time Setting on page 2.

• “Smart” Mode
When set for “Smart” operation, the SmartPlus

will run in “Pulse” mode as above for the first 7
days. During the first 7 days, the SmartPlus will
monitor and record the home’s hot water usage
pattern. For the next 7 days, the SmartPlus will
use the preceding week’s usage pattern to

Figure 1: Mode Select

cycle the pump. This process will be repeated every 7 days. The pump
will cycle for 1 hour before and after each recorded hot water demand.

WARNING: All local plumbing and electrical codes should be fol­lowed when installing this product.

WARNING: Risk of electrical shock. This pump is supplied with a
grounding conductor and grounding-type attachment plug. To
reduce the risk of shock, be certain that it is connected only to a
properly grounded grounding-type receptacle

.

1. Install the SmartPlus in-line on the DHW supply line downstream of
the hot water source as shown in Figure 2. Be sure the directional
arrow on the casing is installed with the arrow pointing away from the
hot water source.

2. Install all other system components as shown in the piping diagram
in Figure 2.

3. When all components are installed, fill system with water.

4. Close the isolation valve on the return line between the water heater
and the flow check valve.

5. Open the drain valve between the isolation valve and flow check valve
and drain water until all air is purged from the line.

6. Close drain valve and open isolation valve.

7. The SmartPlus is shipped from the factory in “Smart” mode. To switch
the pump to “Pulse” mode, remove the 2 electrical box screws and
cover. Change the position of the toggle switch on the circuit board to
“Pulse” (see Figure 1). Replace the cover and secure with 2 screws.

8. Plug the external temperature sensor provided into the “TEMP SEN­SOR” receptacle on the side of the electrical box. Attach the sensor to
the hot water supply pipe downstream of the pump using the black zip­tie connector provided. See Figure 2.

9. Once the system is filled and air is purged, plug in the SmartPlus
power cord.

NOTE:The temperature sensor must be installed and connected
in either “Pulse” or “Smart” mode.

NOTE: The SmartPlus must be installed and supported by the
circulation piping.

Hot Water Return Line (Option No. 2) - Install the SmartPlus on the

domestic hot water (DHW) return line pumping toward the DHW source.
The external sensor provided with the SmartPlus should be installed on
the DHW supply line. Refer to Figure 3 below.

CAUTION: Do not plug in the SmartPlus power cord until the sys­tem is filled with water and purged of air.

SUGGESTED PLUMBING INSTALLATION PROCEDURE:
Hot Water Supply Line (Option No. 1) - Install the SmartPlus on the

domestic hot water (DHW) supply line pumping away from the DHW
source. The external sensor provided with the SmartPlus should be
installed on the DHW supply line. Refer to Figure 2 below.

Option No. 1

Figure 2: Installation Diagram (For demonstration only)

Option No. 2

Figure 3: Installation Diagram (For demonstration only)

1. Install the SmartPlus in-line on the DHW return line as shown in
Figure 3. Be sure the directional arrow on the casing is installed with
the arrow pointing toward the hot water source.

2. Install all other system components as shown in the piping diagram in
Figure 3.

3. Follow steps 3 through 7 listed under the Hot Water Supply Line
(Option No. 1) section.

4. Plug the external temperature sensor provided into the “TEMP SEN­SOR” receptacle on the side of the electrical box. Attach the sensor to
the hot water supply pipe as in Figure 3, using the black zip-tie connec­tor provided.

5. Once the system is filled and air is purged, plug in the SmartPlus
power cord.

NOTE:The temperature sensor provided may not have enough
wire length to reach the DHW supply pipe with the SmartPlus

installed on the return line. In this case, standard low voltage

A Taco Family Company

2017

®

1

0

doorbell wire (not included) can be spliced into the sensor line
increasing the overall sensor wire length.

NOTE: The temperature sensor must be installed and connected
in either “Pulse” or “Smart” mode.

NOTE: The SmartPlus must be installed and supported by the
circulation piping.

OTHER SPECIAL FEATURES OF THE SMARTPLUS:

1. Vacation Function - If no water usage is detected for 36 hours, the

pump will remain off until hot water usage is detected. Once detected,
the pump will resume operation.

NOTE: If pump is set to “Smart” mode, the pump will operate in
“Pulse” mode for the first 7 days while recording usage patterns.

2. Exercise Function - While in vacation mode, the pump will come on

every 7 days for 10 seconds to prevent corrosion or scale buildup.

3. 72 Hour Memory Backup - Should a power outage occur, the

SmartPlus (in Smart mode only) will retain its recorded settings and
internal timer for 72 hours. When power is restored, the SmartPlus will
return to its programmed mode setting, either “Pulse” or “Smart.”

4. LED - The SmartPlus is provided with 3 LED’s located on the side of

the electrical box.

Green LED – Illuminated - Power On
Yellow LED – Flashing - Pump in “Pulse” mode

Illuminated (not flashing) - Pump in “Smart” mode

Red LED – LED off - Sensor is connected properly

LED flashes once every 5 seconds - Shorted sensor.

Use replacement sensor kit #194-3574.
LED flashes twice every 5 seconds - Open sensor

- check all sensor connections.
LED flashes three times every 5 seconds - Blown
fuse. Use replacement fuse kit #26-813RP.

5. Variable Run Time Setting - the Smart Plus run time can be set

for varying domestic hot water pipe sizes and loop length. The fac­tory default setting is 3.

Follow the steps below to adjust the run
time:

1. Make sure the SmartPlus power
cord is unplugged from electrical outlet.

2. Remove the electrical box cover
from the circulator to expose the
electronic control board.

3. Adjust the run time dial using the
Pump Sizing and Dial Setting
guide. See Figure 4.

Figure 4: Run Time Dial

NOTE: For the best possible sys-

tem performance, some adjust­ments may need to be made to the dial position.

4. Replace the electrical box cover.

5. Plug SmartPlus power cord into electrical outlet. Pump will start
and run at the new run time setting.

Pump Sizing and Dial Setting Guide

/2″ Supply and Return Lines

1

upply Pipe

S

Model Number

06 & 006-IFC*

0

008 & 008-IFC*

3/4″ Supply and Return Lines

Model Number

006 & 006-IFC*

08 & 008-IFC*

0

Maximum

ength (ft.)

L

25 50 1 1/10

50 100 3 3/10

00

1

00

2

300 400 10 10/10

50

2

450 550 5 5/10

550 650 8 8/10

50

6

upply Pipe

S

Maximum

Length (ft.)

5

2

50 200 3 3/10

200 300 5 5/10

00

3

400 500 10 10/10

00

3

500 650 5 5/10

650 750 8 8/10

50

7

Total Maximum

ipe Length

P

00

2

00

3

50

4

00

7

otal

T

Maximum Pipe

ength

L

0

5

00

4

00

5

00

8

Dial

etting

S

5 5

8 8

3 3

0

1

Dial

Setting

1 1

8 8

3 3

0

1

ON/OFF Time

inutes

M

/10

/10

/10

0/10

1

ON/OFF Time

Minutes

/10

/10

/10

0/10

1

*With Optional Integral Flow Check

This information is provided as a reference only. Find the dial setting in the
guide above that best meets the design. Individual systems may vary.
Select the circulator model based on the supply and return pipe size and
pipeline length. Do not oversize the pump or high velocity noise and ero­sion corrosion of the system piping may result.

Sizing Assumptions:

Flow = 1GPM Max.
Velocity = 3 ft./sec.
Allowances have been added for pressure drop of other typical
system components.
Type L Copper Tubing

LIMITED WARRANTY STATEMENT

Taco, Inc. will repair or replace without charge (at the company’s
option) any product or part which is proven defective under nor­mal use within three (3) years from the date of manufacture.

In order to obtain service under this warranty, it is the responsi­bility of the purchaser to promptly notify the local Taco stocking
distributor or Taco in writing and promptly deliver the subject
product or part, delivery prepaid, to the stocking distributor. For
assistance on warranty returns, the purchaser may either contact
the local Taco stocking distributor or Taco. If the subject product
or part contains no defect as covered in this warranty, the pur­chaser will be billed for parts and labor charges in effect at time
of factory examination and repair.

Any Taco product or part not installed or operated in conformity
with Taco instructions or which has been subject to misuse, mis­application, the addition of petroleum-based fluids or certain
chemical additives to the systems, or other abuse, will not be
covered by this warranty.

If in doubt as to whether a particular substance is suitable for use
with a Taco product or part, or for any application restrictions,
consult the applicable Taco instruction sheets or contact Taco at
[401-942-8000].

Taco reserves the right to provide replacement products and parts
which are substantially similar in design and functionally equivalent
to the defective product or part. Taco reserves the right to make
changes in details of design, construction, or arrangement of
materials of its products without notification.

TACO OFFERS THIS WARRANTY IN LIEU OF ALL OTHER
EXPRESS WARRANTIES. ANY WARRANTY IMPLIED BY LAW
INCLUDING WARRANTIES OF MERCHANTABILITY OR FIT­NESS IS IN EFFECT ONLY FOR THE DURATION OF THE
EXPRESS WARRANTY SET FORTH IN THE FIRST PARA­GRAPH ABOVE.

THE ABOVE WARRANTIES ARE IN LIEU OF ALL OTHER

WARRANTIES, EXPRESS OR STATUTORY, OR ANY OTHER
WARRANTY OBLIGATION ON THE PART OF TACO.

TACO WILL NOT BE LIABLE FOR ANY SPECIAL, INCIDENTAL,
INDIRECT OR CONSEQUENTIAL DAMAGES RESULTING
FROM THE USE OF ITS PRODUCTS OR ANY INCIDENTAL
COSTS OF REMOVING OR REPLACING DEFECTIVE PROD­UCTS.

This warranty gives the purchaser specific rights, and the pur­chaser may have other rights which vary from state to state.
Some states do not allow limitations on how long an implied war­ranty lasts or on the exclusion of incidental or consequential
damages, so these limitations or exclusions may not apply to
you.