Taco Comfort SmartPlus ECM High-Efficiency Instant Hot Water System

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 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.
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 Smart Plus 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.

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

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 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

   194-3726

   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. 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.
   NOTE: For the best possible system 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

1/2″ Supply and Return Lines

Model Number| Supply Pipe Maximum Length (ft.)| Total Maximum Pipe Length| Dial Setting| ON/OFF Time Minutes
---|---|---|---|---
006 & 006-IFC| 25| 50| 1| 1/10
50| 100| 3| 3/10
100| 200| 5| 5/10
200| 300| 8| 8/10
300| 400| 10| 10/10
008 & 008-IFC| 250| 450| 3| 3/10
450| 550| 5| 5/10
550| 650| 8| 8/10
650| 700| 10| 10/10

3/4″ Supply and Return Lines

Model Number| Supply Pipe Maximum Length (ft.)| Total Maximum Pipe Length| ****

Dial Setting

| ****

ON/OFF Time Minutes

---|---|---|---|---
006 & 006-IFC| 25| 50| 1| 1/10
50| 200| 3| 3/10
200| 300| 5| 5/10
300| 400| 8| 8/10
400| 500| 10| 10/10
008 & 008-IFC| 300| 500| 3| 3/10
500| 650| 5| 5/10
650| 750| 8| 8/10
750| 800| 10| 10/10

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

Taco Family Company
Taco, Inc., 1160 Cranston Street, Cranston, RI 02920 I
Tel: 401-942-8000
Taco (Canada), Ltd., 84S0 Lawson Road, Suite #3, Milton, Ontario L9T 0J8 I Tel: 905-564-9422
Visit our web site: www.TacoComfort.com I ©2022 Taco, Inc.

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