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- 6 -

12 - Setup and Operation

12.1 - Control (UI) Panel Layout

0-10V

Lead/2-Pump Operation

Proportional Pressure

Status

SELECT

MODE

SET

MODE

2-PUMP

OPERATION

HOLD BOTH 3s

000-0000

1915

ecm

HIGH-EFFICIENCY CIRCULATOR

TM

25

35

45

65

HEAD FEE

T

HEAD FEE

T

FLOW GPM — Constant Pressure

120

15

25

35

FLOW GPM — Constant Speed

80 100 120

MODES

1

2

3

4

5

6

7

8

1.  Status LED
2.  Constant Pressure Mode Setting LED
3.  Constant Speed Mode Setting LED
4.  Proportional Pressure Mode LED
5.  0-10v Mode LED
6.  2-Pump Operation LED
7.  [^] Select Mode Button 
8.  [O]  Set Mode Button 

12.2 - Switching the Pump On and Off

When the pump is powered for the first time, it operates with the factory 

default setting in Constant Pressure mode equal to 33ft of head.
The pump requires dry contact to run and comes with a jumper across the 

ENABLE INPUT (J4) contacts found on the Control Panel UI.  The pump 

will run when connected to a power source when the jumper is connected.  

Turning the pump on/off remotely is accomplished by accessing the 

ENABLE INPUT (J4) contacts on the UI control board located under the 

UI and connecting the contacts to an external relay.  Access is gained by 

removing the 4 screws located in each of the UI panel’s four corners.

Note: After powering up, wait 5 minutes before powering off.

13 - Pump Functions

[^] Select Mode Button

Short press: 

Change Mode

•  Scrolling through operational modes upwards. Current operation-

al mode LED blinking. To accept the new mode press the Set 

Mode button.  

Long Press (10 seconds) – 

LOCKOUT

•  Pressing and holding the [O] Set Mode Button for 10 seconds 

activates or deactivates pump LOCKOUT. In LOCKOUT, the cur-

rently selected mode is active only. No changes can be made 

while in LOCKOUT. LOCKOUT activation or deactivation is ac-

knowledged by all LED’s blinking on and off once, and returns to 

display current operating mode.

[^] Select Mode [O] Set Mode Button

Long press (3 seconds): 

2-Pump Operation

•  To select or deselect 2-pump (lead/lag) operation.

13.1 - Pump Modes, 0-10Vdc and Parallel Pump Operation

The pump can operate in 9 different modes. Set the pump in the most    

appropriate mode depending on the system where the pump operates.
The pump modes are: 

Constant Pressure:

 4 settings  

 

 

 

65ft, 45ft, 35ft, 25ft (Changes impeller speed to maintain pressure  

 

as flow increases)

•  The pump maintains the selected pressure from 0 flow to   

maximum power. At maximum power the pressure begins  

 

to drop with increasing flow.

Constant Speed:

 

settings 

    

35ft, 25ft, 15ft (Maintains speed at selected head at 0 flow)
•  In Constant Speed mode the impeller speed is maintained  

 

through the entire range of flow.

Automatic Mode:

 1 setting (Proportional Pressure - increases impeller 

speed to increase differential head as flow increases)

•  In automatic mode the pump sets the operating pressure depending  

on the system resistance.

•  The parameters are preset and cannot be changed.   

0 – 10Vdc:

•  In this mode, all automatic curves are deactivated for full control via  

an external signal.  A dry contact from the external source is used to  

activate or deactivate the pump.  Pump speed is controlled via a 0-10V 

DC signal.  Loss of the 0-10V DC signal defaults pump to 50% of full 

speed. The 0-10Vdc output signal is a linear relationship between speed 

and Vdc regardless of the selected mode. 1-3 Vdc is minimum speed,  

10 Vdc is maximum speed, 6.5 Vdc is medium speed etc.

•  0-10Vdc operation is unavailable in 2 pump mode.
To switch between modes (except 2-Pump Operation) depress the  

[^] Select Mode 

button for 1 second. The selected mode LED will begin 

blinking. Continue pressing the 

[^] Select Mode 

button to scroll through 

the available modes indicated by the mode’s blinking LED.  Press the    

[O] Set Mode 

button to accept the desired operating mode.

2-Pump Operation:

 1 setting

•  This option is selected when 2-pump alternation is desired.

•  Pumps will alternate run-time every 24 hours (not adjustable).

•  In this mode the lead pump will control the operation of the lag pump.

1.  Set both pumps to the same Mode

2.  Turn main power off to both pumps

3.  Connect Primary Pump “P1” relay output common and NC to  

 

“P2” Enable Input (see 21.1 - Connection Examples Parallel   

 

Pump Operation).  NOTE:  Remove factory installed jumper 

 

from “P2” Enable Input

4.  Connect “P2” 0 – 10Vdc Output to “P1” 0-10Vdc Input, positive 

 

to positive and negative to negative

5.  NOTE:  Between pumps standard 18ga unshielded 

 

communication wire is sufficient

To activate or deactivate 2-Pump Operation, press the 

[^] Select Mode 

button

 + [O] Set Mode 

button together and hold for 3 seconds. The 

2-Pump Operation LED will light indicating 2-Pump Operation activation. 

The LED will go out upon deactivation. Only the master pump should be 

set to 2-pump operation.
Once in 2-Pump operation, press the SELECT MODE button and the  

SEST MODE button together for 1 second to switch the running pump.

f.  Connect the black wire of the pump  

  to the “Hot/ Live” wire of the  

  system. Typically black, or red  

  wire if no black wire is present.  

  When no black wire is present,  

  a red wire is a secondary live  

  wire found in some 220/1    

  circuits.   

 

 

  Connect the white wire of the  

  pump to the white or gray    

  neutral wire of the system.   

  The green ground wire is    

  connected to the grounding  

  terminal inside the pump.    

   

  

 

 

See figure 2 noted to the left.

Figure 2

1915ecm

 Electrical opening: 1/2”

14 MPSM standard thread

[O] Set Mode Button

Short press: 

Confirm Selection

•  To confirm the mode currently selected.   

 

 

Selected operational mode LED solid. 

NOTE:

 Pump returns to previous operational mode  

 

if Set Mode is not pressed.

Summary of Contents for 1900e Series

Page 1: ...SUPERSEDES July 29 2019 Effective January 10 2023 302 388 Plant ID No 001 5031 Instruction Sheet 1915ecm ECM High Efficiency Circulator 900 1...

Page 2: ...onnections 5 12 Setup and Operation 6 12 1 Control UI Panel Layout 6 12 2 Switching On Off 6 13 Pump Functions 6 13 1 Mode Descriptions 6 14 Specifications 7 14 1 Application 7 15 Electrical Ratings 7...

Page 3: ...indre des temp ratures qui peuvent entra ner des blessures Warning The addition of petroleum based fluids or certain chemical additives to systems using TACO equipment voids the warranty AVERTISSEMENT...

Page 4: ...n the horizontal position or the vertical position with the control module facing up see Figure 1 The cover can be rotated independent of the pump to adjust orientation of the User Interface the cable...

Page 5: ...ket or leaks may result Tighten the four bolts evenly in a double crisscross pattern to 70 in lb of torque t Reinstall the pump into the system using the new flange gaskets supplied with the seal kit...

Page 6: ...ssure increases impeller speed to increase differential head as flow increases In automatic mode the pump sets the operating pressure depending on the system resistance The parameters are preset and c...

Page 7: ...chnician for help Fluid Temperatures PSI bar 112 F 50 C 5 1 0 4 176 F 80 C 10 4 0 8 230 F 110 C 23 7 1 7 14 2 For indoor use only employer uniquement a l interieur 15 Electrical Ratings Description 19...

Page 8: ...nal controller Note Max output voltage may be limited due to power limiting of the pump MOTOR CONTROLLER RIBBON CABLE Connects High Voltage Power Module to UI If the cable becomes disconnected reconne...

Page 9: ...9 21 1 Connection Examples DEFAULT FACTORY Configuration REMOTE START Analog Control 1 REMOTE START Analog Control 2 REMOTE START Analog Control 3...

Page 10: ...10 2 PUMP OPERATION Lead Pump 2 PUMP OPERATION Lag Pump From Relay Output on Lead Pump To 0 10VDC Input on Lead Pump From 0 10VDC Output from Lag Pump To Enable Input of Lag Pump...

Page 11: ...tor Shut down off 5 Blinks Under Voltage Motor Shut down off 6 Blinks COMM Fault Error TX RX UI or Motor Run at Constant Speed 1 7 Blinks Safety Routine Error Motor Shut down off 8 Blinks Staging Faul...

Page 12: ...tance 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 prov...

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