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Section 1. Installation and Operation

Warning:

 Installation and use of this product requires 

experience and knowledge of this or similar products.  

Persons with reduced physical, mental or sensory 

capabilities must not use this product, unless properly 

instructed and supervised. Children must not be allowed to 

play with this product.

Avertissement:

 l'installation et l'utilisation de ce produit exigent 

une expérience et des connaissances de ce produit ou de produits 

semblables. Une personne aux capacités physiques, mentales ou 

sensorielles réduites ne doit pas utiliser ce produit, à moins d’être 

correctement instruite et supervisée. On ne doit pas laisser les enfants 

jouer avec ce produit.

Introduction

This manual is broken down into two sections and describes the installation, 

operation and control module for 1900e series pumps. Section 1 describes 

the installation and operation features. Section 2 describes the control mod-

ule and its functions.

1 - General Information Uses

The 1900e series circulating pumps are available in 2 versions.  The cast 

iron version is used for the transfer of liquid media within a closed-loop 

hot-water heating or air-conditioning hydronic system.  The stainless steel 

version is used in potable DHW systems or where NSF/ANSI 61-G & 372 

compliance is required.

Both the cast iron and stainless steel versions are designed as single or 

parallel main/standby operation variable-speed pumps, where the speed is 

regulated by an on-board electronic device. 

2 - Safety

These instructions should be studied carefully before installing or operating 

the pump. They are meant to help you with installation, use and mainte-

nance and to increase your safety. Installation should be performed with re-

gards to local or national standards. Only qualified personnel should main-

tain and service these products. Failure to comply with safety precautions 

could cause personal injury or machinery damage.

Warning:

 Do not use in swimming pool or spa areas. Pump 

has not been investigated for these applications.

AVERTISSEMENT:

 Ne pas utiliser dans une piscine ou un 

spa. La pompe n’a pas été étudiée pour ces applications.

Warning:

 To avoid electrical shock, disconnect the power 

supply to the circulator and the main electrical unit.  Follow 

all local electrical and plumbing codes.

AVERTISSEMENT:

 Pour éviter tout choc électrique, 

débranchez l’alimentation électrique vers le circu-lateur et  

l’unité électrique principale. Respectez tous les codes de 

plomberie et électriques locaux.

Warning:

 Hot surfaces can cause burns.  The motor can 

also reach temperatures that could cause injury.

AVERTISSEMENT:

 Les surfaces chaudes peuvent provo-

quer des brûlures. Le moteur peut également atteindre des 

températures qui peuvent entraîner des blessures.

Warning:

 The addition of petroleum based fluids or certain 

chemical additives to systems using TACO equipment voids 

the warranty.

AVERTISSEMENT:

 L’ajout de liquides à base de pétrole ou 

de certains additifs chimiques à des systèmes utilisant un 

équipement TACO annule la garantie.

Warning:

 Use supply wires suitable for 90°C.

Warning:

 Misconnection or overload of electrical or signal 

connections could cause pump to shut-down or cause per-

manent damage.

AVERTISSEMENT:

 Employer des fils d’alimentation ade-

qauts pour 90°C.

AVERTISSEMENT:

 Toute erreur de raccordement ou sur-

charge des connexions électriques ou de signali-sation 

peut entraîner un arrêt de la pompe ou des dommages 

permanents.

Warning:

 Do not  operate pump without the electrical cover 

securely attached. 

AVERTISSEMENT:

  Ne pas actionner la pompe si le cou-

vercleélectrique n’est pas correctement fixé.

Warning:

 Pump motor, electronics enclosure and conden-

sate drain openings should not be thermally insulated as 

it could interfere with cooling and condensate   drainage.

AVERTISSEMENT:

  

Lemoteur depompe, l’enceinte électro-

nique et les ouvertures de drainage de condensat doivent 

être thermiquement isolés car il peut y avoir interférence 

avec l’évacuation de condensat et deliquide de refroidisse-

ment.

3 - Pump Description

The high efficiency, electronically commutated, close coupled 1900e series 

pumps consist of two main parts; the centrifugal pump and the electronic 

control. The hydraulic section is sealed from the motor assembly by a me-

chanical seal.  1900e series pumps are powered by an electronically com-

mutated permanent magnet motor (ECM) which does not consume energy 

to magnetize the rotor, providing superior energy efficiency.

The ECM motor is run by an on-board frequency converter. The converter 

estimates current flow and head from the motor load and speed.  With this 

information the self-sensing ECM pump constantly calculates pump head 

and flow and adapts motor speed to the appropriate flow for the selected 

curve.

3.1 - Features

•  10 easy to set modes to match system requirements.  

 

º

 4 - Constant Pressure modes. 

 

º

 3 - Constant Speed modes.

 

º

 1 - Proportional Pressure mode.

 

º

 1 - 0-10v mode.

 

º

 1 - 2-pump operation mode.  

•  ECM performance equivalent to the versatile 1900 & 1600 series 

pumps.

•  Fully rotational User Interface (UI) to accommodate any pump position.

•  Led Status monitors Pump On (solid green), Pump in Standby (flashing 

green) and Error (flashing red error code - see section 22.1)

•  Mechanically sealed for easy maintenance. 

4 - Use

All 1900e series pumps equipped with a cast iron casing are intended for 

circulation of solid-free fluid in pressurized, hot and chilled hydronic sys-

tems.  All 1900e series pumps equipped with a stainless steel casing are 

intended for DHW and potable water applications and are NSF Commercial 

Hot (180°F water) rated and suitable for sanitizing applications.

Summary of Contents for 1900e Series

Page 1: ...SUPERSEDES March 5 2019 Effective July 29 2019 302 388 Plant ID No 001 5016 Instruction Sheet 1915e ECM Circulator ...

Page 2: ... Connections Setup and Operation Control UI Panel Layout Switching On Off Pump Functions Mode Descriptions Specifications Application Electrical Ratings Standards Protection Connections Materials of Construction 3 3 3 3 3 4 4 4 5 5 5 5 6 6 6 6 6 7 7 7 7 7 Section 2 Controller Operation 18 19 20 21 21 1 22 22 1 Features Specifications ControllerLayout Connection Considerations Connection Examples F...

Page 3: ...mpératures qui peuvent entraîner des blessures Warning The addition of petroleum based fluids or certain chemical additives to systems using TACO equipment voids the warranty AVERTISSEMENT L ajout de liquides à base de pétrole ou de certains additifs chimiques à des systèmes utilisant un équipement TACO annule la garantie Warning Use supply wires suitable for 90 C Warning Misconnection or overload...

Page 4: ...re adequately torqued The 1900e series model pumps can be installed with the motor shaft in 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 glands should never be pointed upward to mitigate water ingress The desired conduit box orientation can be ac...

Page 5: ...sing and Impeller Motor assembly Using the new gasket provided with the seal kit reassemble the Impeller Motor assembly to the casing and secure with the four body bolts Use caution not to pinch the body gasket or leaks may result Tighten the four bolts evenly in a crisscross pattern to 70 in lb of torque v Reinstall the pump into the system using the new flange gaskets sup plied with the seal kit...

Page 6: ...ase 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 acti vate or deactivate the pump Pump speed is controlled via a 0 10V DC s...

Page 7: ... experienced radio TV technician for help Fluid Temperatures PSI bar 112 F 50 C 7 3 0 5 176 F 80 C 11 6 0 8 230 F 110 C 20 3 1 4 14 2 For indoor use only employer uniquement a l interieur 15 Electrical Ratings Pump Ratings 1 phase 200 240V 47 63Hz Power Consumption HP 0 027 0 75 HP Power Consumption W 20 650W Rated Current 1 phase 230V 0 25 3 8A Relay Output 30 VDC Max Load up to 2A 24VAC Max Load...

Page 8: ...n 2 pump operation Used to provide analog feedback to an external controller MOTOR CONTROLLER RIBBON CABLE Connects High Voltage Power Module to UI If the cable becomes disconnected reconnect to MOTOR CONTROL RIBBON CABLE connector 21 Connection Considerations All cables connected must be heat resistant to at least 185 F All cables connected must be installed in accordance with The National Electr...

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 Lag Pump 2 PUMP OPERATION Lead Pump ...

Page 11: ...2 second intervals Description Probable Cause s 1 blink Locked Rotor Impeller is unable to turn debris in system 2 blinks Over Current High Motor Load 3 blinks Over Temperature Motor might be faulty or viscous medium is present High Motor Load Water Temperature too hot Pump running dry 4 blinks Over Voltage Line voltage is too high 5 blinks Under Voltage Line voltage is too low for proper operatio...

Page 12: ...itable 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...

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