INSTALLATION AND OPERATION INSTRUCTIONS
TACO ENERGY SAVING
ES2
ES2 ADAPT
ES2 SOLAR
ES2 PURE
EN
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 550142:1997 (including amendments)
• LVD Directive (2014/35/EU)
Standard used: EN 62233:2008, EN 60335-1:2012, EN 60335-2-51:2003 (including amendments)
• 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 efciency index EEI. See the pump nameplate.
• RoHS II Directive (2011/65/EU)
This CE declaration of conformity is valid only when published as part of the Taco Italia installation 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.
3Declaration of conformity
ENERGY SAVING
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
4 Contents
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
5Contents
ENERGY SAVING
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 specically 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.
The inobservance of the safety provisions marked by the word “CAUTION”
CAUTION
The Quick Guide contains following warning symbols.
may endanger the integrity and functionality of the equipment and of the
machines.
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 pressure from heating system. Drain the system or close the isolating valves.
6 Indication of instructions
CAUTION
High temperature surface. Pay utmost care to prevent people from getting in
contact with the hot surfaces of the circulator.
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 experience 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 maintenance shall not be made by children without supervision.
To guard against injury, basic safety precautions should be observed, including 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.
7Important safety and installation instructions
ENERGY SAVING
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 sufcient 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 qualied 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 operating current not exceeding 30mA.
8 Important safety and installation instructions
10. Any modication 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 equipment 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.
9Important safety and installation instructions
ENERGY SAVING
5 Field of application
5.1 Types of system
Models Uses
Circulation of water/liquids in hot water heating systems and in renewable
energy solar thermal systems:
ES2
ES2 C A
ES2 ADAPT
ES2 SOLAR
ES2 PURE
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.
• One-pipe systems
• Two-pipe systems
• Systems with constant or variable ows
• Underoor heating systems
• Boiler or primary circuit
• Storage tank circuit
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
• Underoor heating systems
• Boiler or primary circuit
• Storage tank circuit
Domestic hot water circulation, drinking water circulation systems and similar
domestic and industrial circulation systems.
This circulator is suitable for drinking water only.
• 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.
10 Field 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 efciency 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
ES2 ADAPT
ES2 SOLAR
ES2 PURE
6.2 Type key
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
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
3
/
4,
15 = G1, 25 = G1
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)
Premium version with operating modes activeADAPT, P, C and min-max.
Pump housing available in cast iron.
Solar thermal systems version with operating modes P and min-max.
Pump housing available in cast iron.
Domestic hot water circulation systems with operating mode min-max.
Pump housing available in plastic composite material (C)
ADAPT 25 - 60 / 130Example
ES2
1
/
2
, 32 = G2) [mm]
11Field of application
ENERGY SAVING
6.3 Name plate
Fig. 6.1: Name plate (example)
6.4 Components
Fig. 6.2: Exploded view
1 Type
2 Code
Input power P1[W] / Input curren I1[A] / System
3
pressure [MPa]
4 Voltage, frequency
5 Temperature class / Protection class
6 Energy Efciency Index (EEI)
7 CE mark / Appliance class / Quality mark
A Pump housing E Stator
B Impeller and bearing plate F Electronics
C Rotor G Motor housing
D Can H Front cover
12 Product 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
Maximum relative humidity ≤ 95%
Maximum operating pressure
Minimum pressure on the intake opening
Sound pressure level < 43 dB(A)
EMC (electromagnetic compatibility)
Specic EEI values
2
ES2
ES2 C
ES2 C A
ES2 PURE C
ES2 ADAPT
ES2 SOLAR
ES2
ES2 C
ES2 C A
ES2 ADAPT
ES2 SOLAR
ES2 PURE C
Minimum pressure Liquid temperature
0.03 MPa (0.3 bar) 50°C
1
0.10 MPa (1.0 bar) 95°C
0.15 MPa (1.5 bar) 110°C
EN 61000-3-2 / EN 61000-3-3
EN 55014-1 / EN55014-2
ES2 60
ES2 ADAPT 60
ES2 SOLAR 60
ES2 C 60
ES2 C 70
ES2 70
ES2 ADAPT 70
ES2 SOLAR 70
ES2 C A IEE ≤ 0,23 - Part 2
from +2°C to +95°C
from +2°C to +110°C
0,6 MPa (6 bar)
1,0 MPa (10 bar)
IEE ≤ 0,20 - Part 2
IEE ≤ 0,21 - Part 2
1
To avoid cavitation noise, minimum pressure values on the intake opening must be strictly respected.
2
The benchmark for most efcient circulators is EEI ≤ 0,20.
13Product information
ENERGY SAVING
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]
0 2 95
10 10 95
ES2
ES2 C
ES2 ADAPT
ES2 SOLAR
20 20 95
30 30 95
35 35 90
40 40 70
0 2 11 0
10 10 110
20 20 110
30 30 110
35 35 90
40 40 70
14 Product information
7 Installation at Site
Installation and service by qualied 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 sufcient 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).
15Installation at Site
ENERGY SAVING
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
16 Installation at Site
Pay attention not to damage the seal of the pump housing.
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.
17Installation at Site
ENERGY SAVING
8 Electric connection
The electric connection has to be performed by a qualied 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.
A B
HO5RN - F
2x0,50 mm²
Ø min 5 mm
Ø max 7 mm
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).
12 mm
5 mm
L
N
D E F G
C
1x230 V (-10%/+6%), 50 Hz
5. The LED light, if lighted, indicates that the power supply is present. (Fig. 8.1.G).
18 Electric connection
min. Ø 7.0 mm
max. Ø 8.5 mm
9 Commissioning
9.1 Start-up of the circulator
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.
CAUTION
CAUTION
CAUTION
Absolutely avoid dry operation. Start the circulator only after having complete-
ly lled the plant.
Circulators with permanent magnets can not be driven in speed by means of
phase control of the supply voltage.
Circulators driven by an electronic frequency converter have a current peak at
each activation (inrush current) greater than traditional circulators (asynchronous). 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 commissioning/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
Fig. 9.1: Selector and LED light
brightness intensity of the LED light.
19Commissioning
ENERGY SAVING
9.3 Mode of operation
A LED provides information about the operation status of the circulator.
LED COLOR DESCRIPTION
ActiveADAPT mode
The activeADAPT mode enables the circulator to actively
Violet
Green
Orange
Blu
Flashing white
Red
adapt its performance to the demands of the system during
short control intervals inside a dened control area.
• Improves the hydraulic balance of the system
• Ensures optimum performance during partial load periods
• Enables quick installation
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).
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).
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 insufcient, progressively increase the set value. Should this performance be excessive
or should noise arise due to the speed of the pumped uid,
progressively reduce the calibration.
Automatic detection of the presence of air - Vent system.
Proceed with the vent routine
Fault or malfunction
Faults, causes and remedies
20 Commissioning
9.4 Automatic detection of the presence of air - Vent system
1a 1b
2 3
Fig. 9.2: Filling and venting of heating systems
Fill and bleed the system correctly. The circulator can be noisy at start due to the presence of
air. Such noise should stop after few minutes of operation. Usually the pump rotor chamber
normally bleeds automatically after a short time in operation.
The circulator is equipped with a special software system that detects the presence of excess
of air within the heating system. The LED shows the presence of air in the hydraulic circuit by
ashing and performing a rapid succession of WHITE colour.
10 min
Following the light signal, it’s possible to easily vent the heating system as follows:
1. Open the air vent valve in the hydraulic circuit above the circulator or open the cap of the air
separator in the pump housing, partially unscrewing it; when unscrewing the cap of the air
separator, beware of not losing the cap itself;
2. set the circulator to MAX position (maximum performance setting);
3. let the circulator run for a short period, according to the construction and the plant size;
4. once vented the system - the guide light (LED) stops blinking and the possible noise stops set the circulator as indicated in Par.10 Circulator setting
Repeat the procedure if necessary.
CAUTION
With solar thermal systems, ll the system with mixtures prepared for that application. The
circulator cannot be used to mix the uids in the system.
The plant cannot be drained by using the circulator.
Do not touch the uid or the circulator when the temperature is greater
than 60 °C. Hazard of scalding by simple contact.
21Commissioning
ENERGY SAVING
10 Circulator setting
Modify the performance of the circulator (head) as needed by rotating the selector using a at
screwdriver, as given in the following table. The selection of the right functioning curve depends
on the characteristics of the heating system in question and the actual heat demand.
LED
ES2 ADAPT ES2 ES2 SOLAR ES2 PURE
activeADAPT *
MODEL
- - -
Lowest proportional curve
Intermediate proportional curve
Highest proportional curve
Intermediate constant curve
* Factory setting
22 Circulator setting
P1
P2
P3
Lowest constant curve
CI
CII
Highest constant curve
CIII
Fixed speed curves
min - max
Lowest proportional curve
P1 *
Highest proportional curve
P2
- -
Lowest constant curve
CI
Highest constant curve
CII
-
Fixed speed curves
min - max
Proportional curve
P
- -
Fixed speed curves
min - max*
--
Fixed speed curves
min - max*
11 Performance curves
11.1 Performance curves - ES2 60
0
H [m]
max
6
5
CII
CII
4
CI
CI
3
P2
P2
2
P1
P1
1
min
0
0.5 1.0 1.5 2.0 2.5 3.0 3.50.0
0.0 0.2
11.2 Performance curves - ES2 70
1050 15 Q [US.gpm]
0.4 0.6 0.8 1.0
Q [IMS.gpm]105
H [ft]
20
15
10
5
0
3
Q [m
/h]
Q [l/s]
min - max
H [m]
7
6
5
4
3
2
1
0
0
0
max
CII
CII
CI
CI
P2
P2
P1
P1
min
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.00.0
0.0 0.2
105 15 Q [US.gpm]
0.4 0.6 0.8 1.0
Q [IMS.gpm]105
H [ft]
20
15
10
5
0
3
Q [m
/h]
Q [l/s]
min - max
23Circulator setting
ENERGY SAVING
11.3 Performance curves - ES2 C 60
0
H [m]
6
5
4
3
2
1
0
0.0 0.2
max
CII
CII
CI
CI
P2
P2
P1
P1
min
0.5 1.0 1.5 2.0 2.5 3.0 3.50.0
1050 15 Q [US.gpm]
0.4 0.6 0.8 1.0
11.4 Performance curves - ES2 C 70
H [m]
7
6
5
4
3
2
1
0
0
0
max
CII
CII
CI
CI
P2
P2
P1
P1
min
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.00.0
0.0 0.2
105 15 Q [US.gpm]
0.4 0.6 0.8 1.0
Q [IMS.gpm]105
H [ft]
20
15
10
5
0
3
Q [m
/h]
Q [l/s]
Q [IMS.gpm]105
H [ft]
20
15
10
5
0
3
Q [m
/h]
Q [l/s]
min - max
min - max
24 Performance curves
11.5 Performance curves - ES2 ADAPT 60
1050 15 Q [US.gpm]
P2
P2
P2
P1
P1
P1
0.4 0.6 0.8 1.0
H [m]
6
5
4
3
2
1
0
0.0 0.2
0
max
CIII
CIII
CIII
CII
CII
CII
CICI
CI
min
P3
P3
P3
0.5 1.0 1.5 2.0 2.5 3.0 3.50.0
11.6 Performance curves - ES2 ADAPT 70
H [m]
7
6
5
4
3
2
1
0
0
0
max
CIII
CIII
CII
CII
CI
CI
min
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.00.0
0.0 0.2
105 15 Q [US.gpm]
P3
P3
P2
P2
P1
P1
0.4 0.6 0.8 1.0
Q [IMS.gpm]105
activeADAPT
Q [IMS.gpm]105
activeADAPT
H [ft]
20
min
15
10
5
0
3
Q [m
/h]
Q [l/s]
H [ft]
20
15
10
5
0
3
Q [m
/h]
Q [l/s]
min
activeADAPT
min - max
activeADAPT
activeADAPT
min - max
activeADAPT
25Performance curves
ENERGY SAVING
11.7 Performance curves - ES2 SOLAR 60
1050 15 Q [US.gpm]
0.4 0.6 0.8 1.0
H [m]
6
5
4
3
2
1
0
0.0 0.2
0
max
PP
min
0.5 1.0 1.5 2.0 2.5 3.0 3.50.0
11.8 Performance curves - ES2 SOLAR 70
H [m]
0
max
7
6
5
4
3
PP
2
1
min
0
0.0 0.2
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.00.0
1050 15 Q [US.gpm]
0.4 0.6 0.8 1.0
Q [IMS.gpm]105
H [ft]
20
15
10
5
0
3
Q [m
/h]
Q [l/s]
Q [IMS.gpm]105
H [ft]
20
15
10
5
0
3
Q [m
/h]
Q [l/s]
max
min
min
min - max
max
min - max
26 Performance curves
11.9 Performance curves - ES2 PURE C 40
0 5 10 Q [US.gpm]
H [m]
4
max
3
2
1
min
0
0.0 0.2 0.4 0.6 0.8
Q [IMS.gpm]108642
H [ft]
15
10
5
0
3
/h]
3.02.52.01.51.00.5
Q [m
Q [l/s]
min - max
27Performance curves
ENERGY SAVING
12 Maintenance
The circulator does not require any special maintenance during operation.
Motor bearings are lubricated by the pumped liquid.
Before each maintenance intervention, disconnect power supply and
wait for the circulator to cool.
13 Faults, causes and remedies
13.1 Fault nding table
FAULTS CONTROL PANEL CAUSES REMEDIES
Increase the system suction
pressure within the permissible range.
Disassemble the motor and
clean the impeller
Vent the system (→ 9.4
Automatic detection of
the presence of air - Vent
system.)
Reduce the rotation speed
(→ 10 Circulator setting)
Verify voltage value of the
electric plant.
Verify the connection of
the motor
Verify the fuses of the plant
Let the pump cool down for
some minutes. Then try to
re-start it.
Verify that the water and
ambient temperature are
within the indicated temperature ranges.
The circulator is noisy
Loud noises of water
circulation
Circulator is not
running although the
electrical power supply
is switched on
LED on
LED on
Flashing white LED Air in the system
LED on The ow is too high
LED off
Suction pressure is insufcient - cavitation
Presence of foreign bodies
in the impeller
Insufcient supply voltage
One fuse in the installation
is blown
The circulator is defective Replace the pump
Overheating
28 Maintenance, warranty and disposal
FAULTS CONTROL PANEL CAUSES REMEDIES
Disassemble the motor and
clean the impeller if the
Circulator is not
running although the
electrical power supply
is switched on
Building does not get
warm
Should you fail to eliminate the cause of the malfunction, refer to the Distributor or nearest
Service Center.
LED red
LED on
The rotor is blocked
Insufcient supply voltage
The circulator performance
is too low
Should you fail to eliminate
the cause of the malfunction,
refer to the Distributor or
nearest Service Center.
doesn’t succeed (→ 13.2)
Verify that the power supply
matches the data on the
name plate.
Increase the suction head
(→10 Circulator setting)
13.2 Unlocking procedure
A red light in the LED indicates a locking.
Turn the selector to the position max, disconnect and connect power supply to start the
automatic release process.The circulator operates 100 attempts to restart (process lasts
approximately 15 minutes).
Every restart is signalled by a short ash of LED light. If the locking is not removed through the
automatic release process after 100 attempts to restart the circulator, it goes into standby and
the LED remains red. In this case follow the manual procedure described in the next steps:
1. Disconnect power supply - the warning light switches off.
2. Close both isolating valves and allow cooling. If there are no shut-off devices, drain the
system so that the uid level is beneath that of the circulator.
3. Carefully pull the rotor/impeller
4. Remove impurities and deposits with appropriate agents.
5. Reinsert the rotor/impeller
6. Set the selector on the wished position.
7. Connect power supply.
If the circulator doesn’t run → .
With high uid temperatures and pressures there is the risk of burnings.
Hazard of scalding by simple contact.
29Maintenance, warranty and disposal
ENERGY SAVING
14 Warranty
The warranty covers manufacturing and processing defects. It does not cover damages
deriving from incorrect installation or design defects of the system, damages which occur
during transport, or seizure due to residues within the system. Proof of purchase is required to
administer warranty claims.
15 Disposal
The correct disposal and recycling of this product will prevent damage to the environment and
risks to human health.
1. Use public or private disposal organisations when disposing of all or part of the product.
2. For information about proper disposal, it is necessary to ask to the city administration, the
authorized ofce or the retailers of the product.
Reserved right of modication
30 Maintenance, warranty and disposal
Taco Italia S.r.l. - Via G. Galilei, 89-91 - 36066 Sandrigo (VI) - ITALY
www.tacoitalia.com
MKTG-TRA-MAN-0.A-05/2018-ENG
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