Taco ES2 ADAPT User manual

INSTALLATION AND OPERATION INSTRUCTIONS
TACO ENERGY SAVING
ES2
ES2 ADAPT
ES2 SOLAR
ES2 PURE
EN

3Declaration of conformity
1 Declaration of conformity
We Taco Italia S.r.l. declare under our sole responsibility that the family of products ENERGY
SAVING to which this declaration relates are in conformity with the Council Directives on the
approximations of the laws of the EC Member State relating to:
• EMCD Directive (2014/30/EU)
Standard used: EN 61000-3-2:2014, EN 61000-3-3:2013, EN 55014-1:2006, EN 55014-
2:1997 (including amendments)
• LVD Directive (2014/35/EU)
Standard used: EN 62233:2008, EN 60335-1:2012, EN 60335-2-51:2003 (including amend-
ments)
• ErP Directive (2009/125/EC-2012/27/EU)
Commission Regulations n. 641/2009 and n. 622/2012
Applies only to circulators marked with the energy efciency index EEI. See the pump name-
plate.
• RoHS II Directive (2011/65/EU)
This CE declaration of conformity is valid only when published as part of the Taco Italia installa-
tion and operating instructions.
Sandrigo, 31th May 2018
Luca Bolcati
General Manager and Managing Director
Person authorized to compile technical le and empowered to sign the EC declaration of
Conformity.

ENERGY SAVING
4Contents
2 Contents
1 Declaration of conformity 2
2 Contents 3
3 Indication of instructions 5
4 Important safety and installation instructions 6
5 Field of application 9
5.1 Types of system 9
5.2 Pumped liquids 9
6 Pumped liquids 10
6.1 Description of the product 10
6.2 Type key 10
6.3 Name plate 11
6.4 Components 11
6.5 Technical data 12
7 Installation at Site 14
7.1 Installation 14
7.2 Permissible installation positions 15
7.3 Motor housing regulation 15
7.4 Insulation of pump housing 16
8 Electric connection 17
9 Commissioning 18
9.1 Start-up of the circulator 18
9.2 Operating elements 18
9.3 Operating elements 19
9.4 Automatic detection of the presence of air - Vent system 20
10 Circulator setting 21
11 Performance curves 23
11.1 Performance curves - ES2 60 23
11.2 Performance curves - ES2 70 23
11.3 Performance curves - ES2 C 60 24
11.4 Performance curves - ES2 C 70 24
11.5 Performance curves - ES2 ADAPT 60 25
11.6 Performance curves - ES2 ADAPT 70 25
11.7 Performance curves - ES2 SOLAR 60 26
11.8 Performance curves - ES2 SOLAR 70 26
11.9 Performance curves - ES2 PURE C 40 27

5Contents
12 Maintenance 28
13 Faults, causes and remedies 28
13.1 Fault nding table 28
13.2 Unlocking procedure 29
14 Warranty 30
15 Disposal 30

ENERGY SAVING
6Indication of instructions
These instructions include information necessary to assemble and use the product correctly.
Besides respecting the general safety regulations, it is necessary to observe all points speci-
cally and specially marked.
3 Indication of instructions
This manual contains information and prescriptions marked by the following symbols.
The inobservance of the safety provisions marked by the symbol “CAUTION”:
hazard” may endanger the safety of people.
The inobservance of the safety provisions marked by the symbol “CAUTION”:
electricity” may endanger the safety of people, as well as the integrity of
things.
CAUTION
The inobservance of the safety provisions marked by the word “CAUTION”
may endanger the integrity and functionality of the equipment and of the
machines.
The Quick Guide contains following warning symbols.
The circulators are not to be used to transfer ammable liquids such as
gasoline, oils, gas oil or similar liquids.
The circulators are not to be used to transfer aggressive liquids, such as acids
and sea water.
CAUTION
The removal of the screws can cause the output of hot uids under high pres-
sure from heating system. Drain the system or close the isolating valves.
CAUTION
High temperature surface. Pay utmost care to prevent people from getting in
contact with the hot surfaces of the circulator.

7Important safety and installation instructions
4 Important safety and installation instructions
Prior to installation, read these installation and operating instructions. The installation and
operation should also be in accordance with national regulations and accepted codes of good
practice.
This appliance can be used by children aged from 8 years and above and
persons with reduced physical, sensory or mental capabilities or lack of expe-
rience and knowledge, only if they have been given supervision or instruction
concerning use of the appliance in a safe way and understand the hazards
involved. Children shall not play with the appliance. Cleaning and user mainte-
nance shall not be made by children without supervision.
To guard against injury, basic safety precautions should be observed, includ-
ing the following:
1. Read and follow all safety instructions and all the important notices on the
appliance before installing, using and maintaining the circulator. failure to do so
may cause personal injury or damage to the circulator or installation.
2. Always disconnect electrical supply before putting on or taking off parts
and whilst the equipment is being installed, maintained or handled. Never
work with bare feet and/or with wet hands.
3. To avoid possible electric shock, special care should be taken since
water is used with electrical equipment. Carefully examine the circulator
before and after installation. Do not operate the circulator if it has a damaged
supply cord or enclosure, or if it is malfunctioning or it is dropped or damaged
in any manner. Inspect the circulator periodically. The circulator should not be
electrically supplied if there is water on parts not intended to be wet.
4. Risk of scalding.
To avoid injury before any servicing operation wait until the water has cooled
inside the circulator.
Do not touch the uid or the circulator when temperature is higher than 60°C.

ENERGY SAVING
8Important safety and installation instructions
5. Improper use
This is a circulator to be used in heating plants and for the circulation of clean
water without abrasive particles. This is not a submersible pump. Do not use
this circulator:
• With liquids other than water (e.g. ammable liquids, etc.) (EN60335-2-51);
• For handling drinkable water or food related liquids;
• For the circulation of domestic water;
• In locations where special condition prevail, such as the presence of a corro-
sive or explosive atmosphere (dust, vapor or gas) (EN60335-2-51);
• For other than intended use.
Never run the circulator dry. The circulator must be always fully lled with
water when operating.
6. Installation
The circulator must be mounted in a stable/xed position in a dry, well
ventilated, frost-free, waterproof and protected place, with sufcient ventilation
around it. Assemble the circulator only after having ended all welding and
brazing works on the hosing. Before installing the circulator, make sure that
the internal part of the tubes is clean. Install the circulator in an accessible
place for future checks and disassembly procedures. Foresee enough space
for inspections and disassembling.
To avoid circulator overheating, do not place any object on the circulator itself.
7. Electric connection
IMPORTANT: Connection to the power supply must be effected by means of
a xed power cable which is tted with a plug-type connection or an all-pole
isolating switch with a minimum contact opening of 3 mm.
Electrical connection must be carried out only by a qualied electrician and in
accordance with local regulations and both data on the name-plate and the
appropriate diagram inside the terminal box cover.
Follow all safety standards.
Do not connect to mains supply unless circulator is fully and correctly
assembled.
8. Supply cord must be selected following the requirements of EN60335-2-51
Chapter 25. Supply cord must be protected against any kind of mechanical
damage (cuts, abrasion, etc.). It must not touch the pipe or the pump. (EN
60335-2-51). If the insulation of the Supply cord can come in contact with
parts having a temperature exceeding 70°C the supply cord insulation must
be protected, for example, by insulating sleeving having an appropriate
temperature rating. (EN60335-2-51).
9. Connect circulators only to a mains supply protected by a Residual Current
Device (RCD or Ground-Fault Circuit-Interrupter) with a rated residual operat-
ing current not exceeding 30mA.

9Important safety and installation instructions
10. Any modication to the equipment must be prior agreed upon with and au-
thorized by the manufacturer. Original spare parts and accessories authorized
by the manufacturer are integral part contributing to the safety of the equip-
ment and of the machines. The use of not original components or accessories
may endanger the safety and causes the termination of the warranty. A safe
operation is assured only for the applications and conditions described in → 5
Field of application of this manual. Non-observance of the safety instructions
results in the loss of any claims to damages.
Non-observance of the safety instructions results in the loss of any claims to
damages.
The indicated limit values are binding and cannot be exceeded for any reason
whatsoever.
Keep these instructions for future reference.

ENERGY SAVING
10 Field of application
5 Field of application
5.1 Types of system
Models Uses
ES2
ES2 C A
Circulation of water/liquids in hot water heating systems and in renewable
energy solar thermal systems:
• One-pipe systems
• Two-pipe systems
• Systems with constant or variable ows
• Underoor heating systems
• Boiler or primary circuit
• Storage tank circuit
ES2 ADAPT
ES2 SOLAR
Circulation of water/liquids in hot water heating systems and in renewable
energy solar thermal systems:
• Solar thermal systems
• One-pipe systems
• Two-pipe systems
• Systems with constant or variable ows
• Underoor heating systems
• Boiler or primary circuit
• Storage tank circuit
ES2 PURE
Domestic hot water circulation, drinking water circulation systems and similar
domestic and industrial circulation systems.
This circulator is suitable for drinking water only.
5.2 Pumped liquids
Clean liquids, not aggressive and not explosive, not containing solid particles, bers or mineral
oils.
In heating systems:
• Water for heating according to VDI 2035;
• Mixtures of water and glycol with glycol percentages not greater than 30%.
In domestic hot water circulation systems, max. 38°d water hardness.
Any other use is regarded as incorrect use. For the use with other uids, manufacturer’s
authorization is required.
• The circulators are not to be used to transfer ammable liquids such as
gasoline, oils, gas oil or similar liquids.
• The circulators must never be used in refrigeration systems, air conditioning
systems and similar installations.

11Field of application
6 Product information
6.1 Description of the product
The ENERGY SAVING are a range of innovative wet rotor circulators with an integrated
frequency converter (INVERTER).
ENERGY SAVING circulators combine an advanced hydraulic system, a high efciency motor,
an intuitive electronic control and an operating software that allow to perfectly adapt to the
various operating conditions and the actual needs of the system.
The motor with electronic control module is mounted on the pump housing by four screws.
The criteria for differential pressure control depend on the set operating mode. In all operating
modes, the circulator adapts to the different loads of the system.
The ENERGY SAVING circulator range is available in the following versions:
ES2
Standard version with operating modes P, C and min-max.
Pump housing available in cast iron, plastic composite material (C) and plastic
composite material with air separator (C A)
ES2 ADAPT Premium version with operating modes activeADAPT, P, C and min-max.
Pump housing available in cast iron.
ES2 SOLAR Solar thermal systems version with operating modes P and min-max.
Pump housing available in cast iron.
ES2 PURE Domestic hot water circulation systems with operating mode min-max.
Pump housing available in plastic composite material (C)
6.2 Type key
ES2 ADAPT 25 - 60 / 130Example
Electronic circulator
Standard version
ADAPT: Version with activeADAPT
SOLAR: Solar thermal version
PURE: DHW version
MAXI: HVAC systems version
Cast-iron pump housing
C: Composite pump housing
B: Bronze pump housing
A: Pump housing with air separator
Nominal diameter (DN) of suction and discharge
ports (10 = G 3/4, 15 = G1, 25 = G1 1/2, 32 = G2) [mm]
Maximum head [dm]
Port-to-port length [mm]
F: Flanged circulator
D: Twin-head circulator
W: Circulator equipped with power cable
M: Circulator with Molex connector

ENERGY SAVING
12 Product information
6.3 Name plate
1Type
2Code
3Input power P1[W] / Input curren I1[A] / System
pressure [MPa]
4Voltage, frequency
5Temperature class / Protection class
6Energy Efciency Index (EEI)
7CE mark / Appliance class / Quality mark
Fig. 6.1: Name plate (example)
6.4 Components
Fig. 6.2: Exploded view
APump housing EStator
BImpeller and bearing plate FElectronics
CRotor GMotor housing
DCan HFront cover

13Product information
6.5 Technical data
Power supply 1x230 V -10%+6%, 50Hz
Adjustment of the rotation speed Manuale con selettore
Motor protection Non richiesta
Insulation class H
Protection class IP 44
Appliance class II
Ambient temperature da +2°C a +40°C
Liquid temperature
ES2
ES2 C
ES2 C A
ES2 PURE C
from +2°C to +95°C
ES2 ADAPT
ES2 SOLAR from +2°C to +110°C
Maximum relative humidity ≤ 95%
Maximum operating pressure
ES2
ES2 C
ES2 C A
0,6 MPa (6 bar)
ES2 ADAPT
ES2 SOLAR
ES2 PURE C
1,0 MPa (10 bar)
Minimum pressure on the intake opening1
Minimum pressure Liquid temperature
0.03 MPa (0.3 bar) 50°C
0.10 MPa (1.0 bar) 95°C
0.15 MPa (1.5 bar) 110°C
Sound pressure level < 43 dB(A)
EMC (electromagnetic compatibility) EN 61000-3-2 / EN 61000-3-3
EN 55014-1 / EN55014-2
Specic EEI values2
ES2 60
ES2 ADAPT 60
ES2 SOLAR 60
IEE ≤ 0,20 - Part 2
ES2 C 60
ES2 C 70
ES2 70
ES2 ADAPT 70
ES2 SOLAR 70
IEE ≤ 0,21 - Part 2
ES2 C A IEE ≤ 0,23 - Part 2
1To avoid cavitation noise, minimum pressure values on the intake opening must be strictly respected.
2 The benchmark for most efcient circulators is EEI ≤ 0,20.

ENERGY SAVING
14 Product information
To avoid condensation in the motor and the electronics the temperature of the pumped
liquid must always be greater than the ambient temperature.
Ambient temperature Liquid temperature
[°C] Min. [°C] Max. [°C]
ES2
ES2 C
0 2 95
10 10 95
20 20 95
30 30 95
35 35 90
40 40 70
ES2 ADAPT
ES2 SOLAR
0 2 110
10 10 110
20 20 110
30 30 110
35 35 90
40 40 70

15Installation at Site
7 Installation at Site
Installation and service by qualied personnel only!
7.1 Installation
The circulator must be mounted in a stable/xed position in a dry, well ventilated, frost-free,
waterproof and protected place, with sufcient ventilation around it.
Assemble the circulator only after having ended all welding and brazing works on the hosing.
Before installing the circulator, make sure that the internal part of the tubes is clean.
Install the circulator in an accessible place for future checks and disassembly procedures.
Foresee enough space for inspections and disassembling.
Foresee isolating valves at intake and output (before and after the circulator) to allow the
disassembly without emptying the plant.
The assembly of the interception organs must be carried out in such a way as to prevent
possible water leaks from involving the terminal board.
Perform the assembly without mechanical stresses acting on the circulator.
Avoid the installation in misaligned pipe work.
Fig. 7.1: Mounting procedure.
The direction of the water ow is indicated by the arrow on the pump housing, as shown in Fig.
7.1.
1. Check that both isolating valves are closed
2. Install the circulator with the motor shaft in horizontal position. Connect the piping without
3. Accurately insert the two gaskets supplied.
4. Establish a screwed connection between circulator and piping.
5. Tighten the screwed connection hand with an assembly tool (e.g. pipe wrench).

ENERGY SAVING
16 Installation at Site
Thread Pump housing material Tightening torque
G1 Composite PA 66 GF Max. 50 Nm
G1 Cast Iron EN-GJL-200 Max. 85 Nm
G1½ Cast Iron EN-GJL-200 Max. 125 Nm
G2 Cast Iron EN-GJL-200 Max. 165 Nm
7.2 Permissible installation positions
Install the circulator with horizontal motor shaft axis (Fig. 7.2).
Fig. 7.2: Permissible installation positions
7.3 Motor housing positions
Fig. 7.3: Motor housing positions
The motor body can be rotated in the positions shown in Fig. 7.3.
Pay utmost care to prevent people from getting in contact with the hot
surfaces of the circulator.
Drain the system or close the isolating valves on either side of the pump
before the screws are removed. The pumped liquid may be scalding hot and
under high pressure.
CAUTION Pay attention not to damage the seal of the pump housing.

17Installation at Site
Fig. 7.4: Changing the motor body position
Procedure (Fig. 7.4):
1. Slacken and remove the four screws M5 holding the motor.
2. Turn the motor to the desired position without extracting it from the pump housing.
3. Insert and tighten the pump housing screws (The tightening torque of the screws of the
pump housing must correspond to a value of 3.3 ± 0.5 Nm).
7.4 Insulation of pump housing
Fig. 7.5: Insulation of pump housing
Note: Limit heat loss from the pump housing and piping.
The heat loss from the pump and pipework can be reduced by insulating the pump housing
and the pipe with the thermal insulation shells supplied with the circulator (supplied as standard
only with model ES2 ADAPT) → Fig. 7.5.
CAUTION Do not insulate the control box or cover the control panel.

ENERGY SAVING
18 Electric connection
8 Electric connection
The electric connection has to be performed by a qualied electrician in
compliance with the national regulations. Follow the safety regulations and
installation regulations of your country.
Connection to the power supply must be carried out in compliance with the
standards via a xed power cable which is tted with a plug-type connection or
an all-pole isolating switch with a minimum contact opening of 3 mm.
The circulator belongs to class II and therefore grounding is not necessary. The circulator does
not require any external protection of the motor. Compare the frequency and the voltage of the
mains with the rating data. All electric information concerning the A1:G413 is on the signaling
plate. The connection cord must be laid in such a way as it cannot come in contact with the
hosing or the motor body. In case of use of the circulator with uids at a temperature higher
than 70 °C, use a connection cord resistant to high temperatures.
Fig. 8.1: Electric connection
1. Connect the power supply conductors to the terminals according to the diagram given in
Fig. 8.1, from A to C. When using three-pole cables, remove the end of the grounding cable.
2. Insert the terminal board in the proper seat, connecting the blue wire (neutral) with letter N
and the black/brown wire (phase) with letter L. (Fig. 8.1.D).
3. Screw the two screws (Fig. 8.1.E - The tightening torque of the screws must correspond to a
maximum value of 0,3 Nm).
4. Tighten the sealing nuts to the fairlead (Fig. 8.1.F - The tightening torque must correspond to
a maximum value of 2 Nm).
5. The LED light, if lighted, indicates that the power supply is present. (Fig. 8.1.G).
A B
5 mm
12 mm
C
NL
HO5RN - F
2x0,50 mm²
Ø min 5 mm
Ø max 7 mm 1x230 V (-10%/+6%), 50 Hz
D E F G

19Commissioning
9 Commissioning
9.1 Start-up of the circulator
CAUTION Absolutely avoid dry operation. Start the circulator only after having complete-
ly lled the plant.
CAUTION Circulators with permanent magnets can not be driven in speed by means of
phase control of the supply voltage.
CAUTION
Circulators driven by an electronic frequency converter have a current peak at
each activation (inrush current) greater than traditional circulators (asynchro-
nous). The activation stage of the circulator has to be size taking into account
this current peak. For further details contact the manufacturer.
Activation frequency: activations/deactivations through the mains voltage ≤ 20/24 h.
9.2 Operating elements
Selector
All settings are made using the selector on the
housing front.
The selector can be adjusted in a continuous
way with a rotation angle of 270 °.
The arrow on the selector indicates the operating
mode chosen.
LED light
The LED light on the front advises the commis-
sioning/fault of the circulator.
Every operating mode is characterized by a xed
light of different colour.
After a change of operating mode, the LED
pulses 5 times. The pulse will be a change of
brightness intensity of the LED light.
Fig. 9.1: Selector and LED light
min. Ø 7.0 mm
max. Ø 8.5 mm
For cables with outer
diameter of the sheath
between 7 mm and
8.5 mm: remove the
rubber retainer from
the cable gland. In this
case, the circulator
can only be installed
with the cable gland
down.

ENERGY SAVING
20 Commissioning
9.3 Mode of operation
A LED provides information about the operation status of the circulator.
LED COLOR DESCRIPTION
Violet
ActiveADAPT mode
The activeADAPT mode enables the circulator to actively
adapt its performance to the demands of the system during
short control intervals inside a dened control area.
• Improves the hydraulic balance of the system
• Ensures optimum performance during partial load periods
• Enables quick installation
Green
P mode (∆p-v) – Proportional differential pressure
The circulator head is proportionally reduced with decreas-
ing of the heat demand from the heating system (ow rate
decrease) and is proportionally increased with increasing
demand of the heat demand from the heating system (ow
rate increase).
Orange
C Mode (∆p-c) - Constant differential pressure
The circulator maintains a constant pressure level (head)
irrespectively of the heat demand required from the heating
system (ow rate).
Blu
min-max mode – Fixed speed
The circulator maintains a xed speed irrespectively of the
heat demand from the heating system (ow rate).
The speed regulation is done by positioning the selector in
a gradual manner at any point between the Min and Max
positions.
Should this performance be insufcient, progressively in-
crease the set value. Should this performance be excessive
or should noise arise due to the speed of the pumped uid,
progressively reduce the calibration.
Flashing white Automatic detection of the presence of air - Vent system.
Proceed with the vent routine
Red Fault or malfunction
Faults, causes and remedies