Beretta SC ACS 160 E User manual

1
ENGLISH
BERETTA SC ACS 160 E - 225 E LOW ENERGY
The SC ACS 160 E - 225 E is a modern domestic hot water mixer that can use the heat accumulated in a storage cylin-
der to produce high volumes of domestic hot water. The unit incorporates an AISI 316 stainless steel brazed plate heat
exchanger.
The unit is controlled by an electric panel complete with a controller for the control and management of the functions of
all system components. The unit also permits the manual operation of all system components.
The heat exchanger’s PRIMARY CIRCUIT comprises:
- A 3-way mixer valve for stabilising the temperature of incoming hot water
- 2 modulating pumps with 0-10 V control, installed in parallel
- A warning system with buzzer and LED indicator to warn of malfunctions in either of the 2 pumps
- A return line diverter valve that controls two separate storage cylinders or one storage cylinder with stratification control.
The heat exchanger’s SECONDARY CIRCUIT, which delivers the domestic hot water comprises:
- An electronic meter for DHW temperature and flow control.
- A variable speed circulation pump.
Description Q.ty
1 DHW mixer in packing 1
2 Instruction manual 1
DESCRIPTION
CONTENTS OF KIT
GENERAL SAFETY INFORMATION AND PRECAUTIONS
READ THIS MANUAL THOROUGHLY BEFORE PERFORMING ANY WORK ON THE PRODUCT.
The manufacturer reserves the right to modify the product without notice for the purpose of introducing technical im-
provements or to facilitate production, installation and positioning. The illustrations in this manual may therefore differ
slightly from the actual product. The safety of the product and the accuracy of the instructions provided are nevertheless
guaranteed.
This manual forms an integral part of the product itself and must be kept in a safe place in order to avoid damage and to
permit rapid consultation throughout the working life of the product.
Ideally, this manual should be kept with the product where it can be consulted whenever needed. The manual should
always accompany the product if sold or transferred to a new owner, or stay with it if the owner moves house and leaves
it behind, so that the next user can consult it.
cod. Doc-0072201 - Rev. 4 (02/16)

2
GENERAL SAFETY INFORMATION
INSTALLATION
Disconnect the product from the mains power supply before commencing any work on it.
The product must be installed in conformity to the laws and standards applicable in the country of installation.
The manufacturer’s responsibility ends with the supply of the product. The product must be installed in accordance with
industry standards and with these instructions, adopting best professional practices, by suitably qualified persons wor-
king for a company that will assume full responsibility for the completed installation
The manufacturer cannot be held responsible for consequences deriving from the unauthorised modification of the pro-
duct or from the use of non-original spare parts.
b Do not expose the product to the elements. It is not designed for use outdoors
ELECTRICAL CONNECTIONS
The product must be installed and all electrical connections made by suitably qualified personnel in conformity to appli-
cable standards.
The product’s mains power cable must be connected to a fused, two-pole switch (power supply 230 VAC, 50 Hz). The
product must be correctly connected to ground.
b The product must be connected to the mains power supply via an earth leakage breaker in accordance with ap-
plicable standards. Correct functioning is only guaranteed provided the product is used with a pump for which it is
designed. The manufacturer cannot be held responsible for the consequences of improper uses.
WATER CONNECTIONS
On completion of all transport or handling operations, always check the tightness of the water fitting ring nuts.
Take particular care when connecting the product to the water supply. When tightening a fitting, always hold the opposite
fitting steady with a second tool to avoid twisting the copper pipes.
b The product must be installed, connected and tested by suitably qualified persons, in conformity to applicable
standards and in accordance with the instructions provided in the documentation supplied with it. N.B. All pipes
must be insulated in conformity to applicable standards.
It is essential to respect the following precautions when using the product:
- Do not touch hot parts of the product such as the water inlet and outlet pipes. Contact with hot parts can cause painful
burns.
- Do not splash water or any other liquid over the product.
- Do not rest any objects on top of the product.
- Do not expose the product to steam from a cooking hob.
- Do not allow children or inexperienced persons to operate the product.
- Do not touch the product when barefoot or wet.
- Do not pull on the electrical cables.

3
ENGLISH
11
16
13
1
7
2
10
4
6
3
14
12
15
9
5
8
STRUTTURA
1 Cabinet in painted steel sheet with internal insulation, ventilation slots for internal electronic components,
and inspection access on all four sides
2 AISI 316 stainless steel brazed plate heat exchanger
Primary circuit
3 Filter
4 Non-return valve
5 Primary circuit mixer valve with servomotor (220 V AC, 3 positions)
6 High efficiency modulating pumps (1) and (2) installed in parallel
7 Automatic vent valve
8 Double return diverter valve
9 Primary circuit shut-off ball valve
10 Filling/drain cock, 1/2” M
Secondary circuit
11 Digital flow and temperature meter, 5-100 l/min – 10-200 l/min
12 Filter
13 Anti-pressure surge ball valve
14 Circulation pump
15 Non-return valve
Electric control panel
16 Main switch; primary and circulation pump switches; buzzer and warning indicator for pump malfunctioning;
controller.
MAIN COMPONENTS

4
WATER CIRCUIT
2
23
4
4
5
5
6
710
10
10
11
9
11
1
1
1
8
1
EAF
2
23
4
4
5
5
6
710
10
10
11
9
11
1
1
1
8
1
EAF
1 Shut-off valve
2 Y filter
3 Three-way mixer valve
4 Modulating pump
5 Non-return valve
6 Heat exchanger
7 Flow meter with temperature sensor (S5-S6)
8 Three-way diverter valve
9 Vent valve
10 Drain valve
11 Non-return valve (recommended, not supplied)
Single return variant
Double return variant

5
ENGLISH
TECHNICAL SPECIFICATIONS
DESCRIPTION SC ACS 160 SC ACS 225
Thermal power absorbed with storage cylinder at 50°C and
DHW water delivery at 10-45° 183 269 kW
Water draw at 10-45°C with storage cylinder at 50°C 75 110 l/min
Thermal power absorbed with storage cylinder at 55°C and
DHW water delivery at 10-45° 269 366 kW
Water draw at 10-45°C with storage cylinder at 55°C 110 150 l/min
Thermal power absorbed with storage cylinder at 60°C and
DHW water delivery at 10-45° 339 471 kW
Water draw at 10-40°C with storage cylinder at 60°C 162 225 l/min
Maximum flow-rate primary 8000 10500 l/h
Minimum permissible temperature, DHW circuit 2 2 °C
Maximum operating temperature 90 90 °C
Maximum operating pressure, primary circuit 10 10 bar
Opening pressure, primary circuit non-return valves 45 45 mbar
Opening pressure, secondary (DHW) circuit non-return valves 40 40 mbar
Consumption 420 780 W
Power supply voltage 230 230 V
Power supply frequency 50-60 50-60 Hz
Index of protection 40 40 IP
Net weight 141 161 kg
Water volume 43 49 l

6
PERFORMANCE CHARTS
SC ACS 160
SC ACS 225
200
220
180
160
140
120
100
60
80
40
20
40 45 50 55 60 65 70 75 80
Produzione ACS (l/min
)
Temperatura prelievo accumulo (°C)
10÷42 °C
10÷45 °C
10÷48 °C
10÷50 °C
10÷55 °C
10÷60 °C
200
220
180
160
140
120
100
60
80
40
240
40 45 50 55 60 65 70 75 80
Produzione ACS (l/min
)
Temperatura prelievo accumulo (°C)
10÷42 °C
10÷45 °C
10÷48 °C
10÷50 °C
10÷55 °C
10÷60 °C
NB: Correct functioning of the product is only guaranteed if the primary circuit inlet temperature is at least 5°C higher
than the DHW setpoint.
DHW ow rate (l/min) DHW ow rate (l/min)
Temperature of water from storage cylinder (°C)
Temperature of water from storage cylinder (°C)

7
ENGLISH
CHARACTERISTIC CURVES SC ACS 160 primary pump and SC ACS 160-225 recirculation pump
01234567
00,4 0,81,2 1,62,0
0481216202428
0
1
2
3
4
5
6
7
8
0
10
20
30
40
50
60
70
80
01234567
0
50
100
150
Q/ m³/h
Q/ m³/h
P
1
/W
Q/l/s
p/kPa
Q/Igpm
H/ m
max.
∆p- v
max.
7m
8m
6m
5m
4m
3m
2m
Wilo-Stratos-Para z
25/1-8, 30/1-8
1-230 V - Rp1.Rp1 1/4
01234567
00,4 0,81,2 1,62,0
0481216202428
08
8
1
2
3
4
5
6
7
0
10
20
30
40
50
60
70
80
01234567
0
50
100
150
Q/ m³/h
Q/ m³/h
P1/W
Q/l/s
p/kPa
Q/Igpm
H/ m
max.
3543
1
/min - 9 V
3900
1
/min - 10 V
3186
1
/min - 8 V
2829
1
/min - 7 V
2471
1
/min - 6 V
2114
1
/min - 5 V
1757
1
/min - 4 V
1400
1
/min - 3 V
3543
1
/min
Wilo-Stratos-Para
25/1-8, 30/1-8
1-230 V - Rp1.Rp1 1/4
0-10 V
01234567
00,4 0,81,2 1,62,0
04812 16 20
0
1
2
3
4
5
6
7
8
0
10
20
30
40
50
60
70
80
01234567
0
50
100
150
24 28
Q/ m³/h
Q/ m³/h
P
1
/W
Q/l/s
p/kP
a
Q/Igpm
H/ m
max.
max.
∆p- c
8m 7m
6m 5m 4m 3m 2m
1m
Wilo-Stratos-Para z
25/1-8, 30/1-8
1-230 V - Rp1.Rp1 1/4
∆p=c (constant) ∆p=v (variable)
External control mode via Analog-In 0-10 V

8
CHARACTERISTIC CURVES SC ACS 225 primary pump
0246810
00,5 1,01,5 2,02,5 3,03,5
010203040
12
12
0
2
4
6
8
10
12
0
20
40
60
80
100
120
0246810
0
100
200
300
Q/ m³/h
Q/ m³/h
P
1
/W
Q/l/s
p/kPa
Q/Igpm
H/ m
max.
max.
∆p- v
12m
10m
9m
8m 7m
6m 5m
4m
11m
Wilo-Stratos-Para
25/1-12, 30/1-12
1-230 V - Rp1.Rp1 1/4
0246810
00,5 1,01,5 2,02,5 3,0
40
3,5
0102030
0
2
4
6
8
10
12
0
20
40
60
80
100
120
0246810
12
12
0
100
200
300
Q/ m³/h
Q/ m³/h
P
1
/W
Q/l/s
p/kP
a
Q/Igpm
H/ m
max.
4314
1
/min - 9 V
4800
1
/min - 10 V
3829
1
/min - 8 V
3343
1
/min - 7 V
2857
1
/min - 6 V
2371
1
/min - 5 V
1886
1
/min - 4 V
1400
1
/min - 3 V
4314
1
/min
Wilo-Stratos-Para
25/1-12, 30/1-12
1-230 V - Rp1.Rp1 1/4
0-10V
0246810
00,5 1,01,5 2,02,5 3,0
0102030
0
2
4
6
8
10
12
0
40
12
12
3,5
20
40
60
80
100
120
0246810
0
100
200
300
Q/ m³/h
Q/ m³/h
P
1
/W
Q/l/s
p/kPa
Q/Igpm
H/ m
max.
max.
11m
9m
8m
7m 6m
5m 4m
3m
2m
1m
10m
∆p- c
Wilo-Stratos-Para
25/1-12, 30/1-12
1-230 V - Rp1.Rp1 1/4
∆p=c (constant) ∆p=v (variable)
External control mode via Analog-In 0-10 V

9
ENGLISH
DIMENSIONS AND FITTINGS
MP
RP1
RS
RP2
EAFS
UACS
SCACS160E-225E
RP1 Primary outlet
1 (bottom of storage
cylinder)
1 1/2”
RP2 Primary outlet
2 (middle of storage
cylinder)
1 1/2”
MP Primary inlet 1 1/2”
RS DHW circulation inlet 1 1/4”
EAFS Domestic cold
water inlet 1 1/4”
UACS Domestic hot
water outlet 1 1/4”
Dimensions:
Height 1140 mm
Width 1000 mm
Depth 500 mm
Install the unit with at least 50 cm free access all
around it to permit inspection and mainte

10
WIRING DIAGRAM
POWER CABLE
LENGTH 1.5 MT
2
1
3
CIRCULATION
PUMP
CIRCULATION
PUMP
INDICATOR
L2
N2
4
5
6
N1
L1
MAIN SWITCH MAIN SWITCH
POWER INDICATOR PUMP 2
PUMP 2
INDICATORPUMP 1
PUMP 1
INDICATOR
FU1
-SEL1
13414
2324
-SEL1 100/G3
24 23
100/G4
-SEL1
-HL1
-SEL2
13414
-SEL3
13414
-SEL4
13414
-SEL3
-HL2 -HL3 -HL4
-SEL2
-SEL4
101/B2
L2
101/K2
N2
102/G17
R2
102/G16
L2
102/G15
R5I
X1.1X1.2
X1.5X1.6
X1.9X1.10
X2.1X2.2

11
ENGLISH
L2
N2
9
7
8
12
10
11
13
CIRCULATION PUMP
ALARM RELAY
PUMP 1 ALARM
RELAY
PUMP 2 ALARM
RELAY
PUMP
TEMPERATURE
ALARM BUZZER
CIRCULATION PUMP
ALARM INDICATOR
PUMP 1
ALARM
INDICATOR
PUMP 2
ALARM
INDICATOR
1112
ALLPRIC
1112
ALLP1
1112
ALLP2
95
1
KALLPR 101/I3
95
1
KALLP1 101/I4
95
1
KALLP2 101/I6
-HL5 -HL6 -HL7
100/B19 L2 100/K19 N2
A2 A1
KALLPR
A2 A1
KALLP1
A2 A1
KALLP2
12 8
4
KALLPR 101/I3
95
101/C8
1
12 8
101/C12
4
KALLPR
12 8
4
KALLP1
101/I4
12 8
4
KALLP2 101/I6
95
101/C9
1
12 8
101/C13
4
KALLP1
95
101/C10
1
12 8101/C14
4
KALLP2
-HA1
X3.1
X3.2
X3.3 X3.4

12
SYSTEM SCHEMATIC
EAF
Fonte di calore
Uscita ACS
Ricircolo
Mandata
primario
EAF
Fonte di calore
Uscita ACS
Ricircolo
Mandata
primario
Boiler
DHW outlet
Recirculation
Cold
water
inlet
Primary
inlet
Single return variant
Double return variant

13
ENGLISH
CONTROL PANEL
- The controller incorporates an illuminated display with a synoptic that identifies the unit’s active functions and instant
temperatures.
- In the event of a pump malfunction (irrespective of whether the pump concerned is the primary or circulation pump) a
warning buzzer sounds and a warning indicator appears, clearly identifying the faulty component and therefore faci-
litating its replacement. The unit also has external contacts that can be connected to a supplementary alarm system.
- In the event of a malfunction in either of the DHW pumps, the unit automatically adjusts itself to deliver up to 60% of the
hot water requested.
- The unit is designed to make replacement of the controller as easy as possible. The controller is located inside the IP55
electrical control panel. The electrical system permits easy replacement of the controller, if necessary. The electrical
system baseplate is marked with symbols identifying the various electrical components inside.
A3
C1
C2
CR
A2
A1
A
1
G
2
3
Legend
G Main switch
1 Pump 1 switch
2 Pump 2 switch
3 Circulation pump switch
A Main alarm buzzer
A1 Pump 1 alarm
A2 Pump 2 alarm
A3 Circulation pump alarm
C1 Pump 1
C2 Pump 2
CR Circulation pump
INSTALLATION
HANDLING
The customer is responsible for providing suitable equipment for unloading and moving the unit, for checking the number
of pieces delivered and for verifying the integrity of all material.
The unit is delivered on a pallet. Use a pallet transporter to move the unit. Make sure that the load is perfectly secure in
order to avoid the risk of tipping presented by the unit’s weight distribution and high centre of gravity.
Take care to avoid impacts. Move the unit to its place of installation before removing the packing.

14
PRELIMINARY CHECKS
First of all, carefully remove the outer packing, then:
- Remove the cardboard from around the unit.
- Remove the protective nylon sheet.
- Disassemble and remove the protective wooden cage using a lever to remove the
staples.
- Separate the mixer from the pallet by loosening the feet (1) and sliding off the bracket
(2) securing the mixer to the pallet.
Check that the unit is complete and undamaged. If any defect or damage is detected,
do not install or attempt to repair the product but return it to the retailer.
Dispose of packaging in compliance with applicable law.
b Make sure that the installation position provides easy visibility of and access to
the safety valves.
b Connect the safety valves to a drain in conformity to applicable standards.
b Install the product as near as practical to the storage cylinder. The product is de-
signed to work with a pipe length of 4 metres (inlet and return) between itself and the storage cylinder.
b Disconnect the product from the mains power supply before commencing any work on it.
b The product must be installed in conformity to the laws and standards applicable in the country of installation.
b The manufacturer’s responsibility ends with the supply of the product. The product must be installed in accordance
with industry standards by suitably qualified persons working for a company that will assume full responsibility for
the completed installation.
INSTALLATION AND PUTTING INTO SERVICE
Bear in mind the following before installing the product:
- The product is designed to mix domestic hot water from a storage cylinder. Any other use, or any use incompatible with
the product’s technical specifications, is considered improper. Do not connect the product directly to a boiler.
- The product is not designed to be operated by children or persons with limited physical, psychological, sensorial or
mental capacities.
- If the piping needed to connect the product to the water system is damaged, it must be replaced by a suitably qualified
person.
- The installation must comply with all applicable laws and standards.
b Installation and connection of the product must be performed by an authorised, specialist company. The company
installing the product assumes all responsibility for ensuring that the installation and functioning of the product
conform to applicable standards.
b The product must be stored in a dry place where it is not subject to frost. The product must be installed where it is
protected against splashes of water. Ambient temperature in the place of installation must not exceed 40°C during
functioning of the product.
b It is advisable to install the product as near as practically possible to the storage cylinder, in order to avoid unne-
cessary heat loss from the connecting pipes. The product must be placed on a surface that is flat and stable, as far
as possible, and levelled up by means of the adjustable feet provided.
b Adjust the feet to level the unit and eliminate all stresses.
SAFETY WARNINGS
- The unit can become hot enough to cause burns if touched.
- In the event of a power failure, the motorised control valve could remain in the open position, causing the whole system
to become hot enough to cause burns if touched.
- Water in the unit can be very hot and under pressure. Therefore, before performing any work, always drain the unit and
close the shut-off valves on the primary and secondary circuits.
- The unit must be installed and put into service in strict conformity to all laws and standards applicable in the place of
2
1

15
ENGLISH
installation, and according to best professional practices.
WATER CONNECTIONS
On completion of all transport or handling operations, always check the tightness of the water fitting ring nuts.
Take particular care when connecting the unit to the water supply. When tightening a fitting, always hold the opposite
fitting steady with a second tool to avoid damage.
Connecting the pipes
Connect up the pipes according to the legend on the unit itself and according to the instructions given in this manual.
b All pipes must be insulated in conformity to applicable standards.
b The pipes between the unit and the storage cylinder should be kept as short as possible.
The following materials are recommended for the construction of the piping system: steel or copper for the primary circuit;
galvanised steel, copper or hot water compatible plastic for the secondary circuit. Galvanised pipes and fittings must only
be used in the secondary (DHW) circuit, and care must be taken to avoid electrochemical corrosion.
a Do not install the unit in gravity feed hot water systems!
- The domestic cold water supply must be fitted with a safety valve conforming to DIN 4753 part 1. The operating pres-
sure of this valve must be equal to the unit’s maximum operating pressure.
- If the pressure of the water supply reaches 10 bar, install a pressure reducer downstream from the water meter.
- The domestic cold water supply must be fitted with a suitable water filter.
- We recommend the installation of a suitably sized potable water expansion vessel.
b Make sure that the installation position provides easy visibility of and access to the safety valves.
b Connect the safety valves to a drain in conformity to applicable standards.
b Make sure that no obstacles are present between the safety valve and the unit.
b The diameter of the drain pipe must not be smaller than that of the safety valve’s drain fitting. The drain pipe should
be no longer than 2 metres and should have no more than two bends in it. If this length has to be exceeded, incre-
ase the diameter of the pipe. Never exceed 4 metres and 3 bends.
b Do not install filters or other restrictions.
b Make sure that the pipes are watertight before securing them in place.
b Check that all threaded fittings on the unit are tightened to the correct tightening torque (in case they have worked
loose during transport).
b Make sure that the unit is disconnected from the mains power supply before opening the casing of the control panel!

16
SYSTEM VARIANT WITH SINGLE RETURN TO STORAGE CYLINDER
b The following procedure must be completed before putting the sy-
stem into service.
Proceed as follows to disable the return to the middle of the storage cylin-
der.
- Close cock RP2 (primary return to middle of storage cylinder);
b We recommend that you screw a 1 ½” M plug into the RP2 fitting.
- Identify the diverter valve with servomotor at the rear of the mixer;
- Loosen the two lock screws with a screwdriver;
- Remove the servomotor by pulling it upwards and place it to the side
of the valve.
OPERATION
The product is designed to produce domestic hot water
using heat accumulated in a storage cylinder.
Any other use, or any use incompatible with the product’s
technical specifications, is considered improper.
Do not connect the product directly to a boiler.
The unit leaves the factory already configured for use.
Only use the unit with potable water supplies that respect
the nominal water quality values given in the table.
The values given are indicative and allowance should be
made for operating conditions.
b Values in excess of those specified in the table alon-
gside can damage the product and automatically
invalidate the warranty. It is therefore important to
analyse the water to ensure that all values are within
the limits given in the table.
ELECTRICAL CONNECTIONS
The product must be installed and all electrical connections made by suitably qualified personnel in conformity to appli-
cable standards. The controller’s mains power cable must be connected to a fused, two-pole switch (power supply 230
VAC, 50 Hz). The product must be correctly connected to ground.
b The unit must be connected to the mains power supply via an earth leakage breaker in accordance with applicable
standards. The manufacturer cannot be held responsible for the consequences of improper uses.
b Electrical connections must only be made by qualified personnel.
RP2
A
B
WATER PARAMETER UNIT OF
MEASURE
MIN/MAX
PERMISSIBLE
VALUE FOR
COPPER-BRAZED
HEAT EXCHANGERS
PH 7-9 (indicative of
saturation)
Saturation index
(delta PH) -0.2<0<+0.2
Total hardness °Fr 15-30
Conductivity μS/cm 10…500
Solid substances mg/l <30
Free chlorine mg/l <0.5
Hydrogen sulphide mg/l <0.05
Ammonia mg/l <2
Bicarbonate mg/l <300
Bicarbonate/Hydrogen
sulphide mg/l >1.0
Sulphur mg/l <1
Nitrate mg/l <100
Nitrite mg/l <0.1
Sulphate mg/l <100
Manganese mg/l <0.1
Dissolved iron mg/l <0.2
Free, aggressive car-
bon dioxide mg/l <20

17
ENGLISH
a Never under any circumstances dispose of the controller with ordinary household refuse. Dispose of the controller
only at designated collection points or return it to the dealer or manufacturer.
b The manufacturer declines all responsibility for damage caused by failing to ground the product adequately or by
failure to respect the wiring diagrams provided in this manual.
PRIMARY CIRCUIT FILLING PROCEDURE
b Fill and bleed the primary circuit with the water at ambient temperature.
- Set the controller for operation in manual mode (see parameter 4.2).
- Switch on relay R3 to open the mixer valve and switch on relay R6 to run the primary circuit pumps.
- Open the vent valve.
- Pump water around the circuit for 2 minutes.
- Switch on relay R1 to open the storage tank middle valve (double return variant)
- Pump water around the circuit for 2 minutes.
- Close the vent valve.
- Set the controller for operation in automatic mode (see parameter 4.1).
PUTTING INTO SERVICE
Circuit filling and putting into service must only be done by qualified personnel.
Fill and bleed the primary and secondary circuits and check for leaks before putting the unit into service.
- Check that the ring nuts of all the water fittings are tight.
- Open the cold water and hot water shut-off valves slowly in order to avoid pressure surges.
- Fill the system and check it for water tightness.
- All fittings are assembled in the factory. It is nevertheless advisable to check their tightness after installing the product.
It is also necessary to test the product for water tightness at operating pressure when putting it into service.
- Power on the unit.
- Bleed the system as follows:
- Open a hot water tap near the unit.
- Bleed the primary (storage cylinder) circuit by means of the vent valve normally located at the highest point in the
circuit.
- Continue until all the air has been bled from the system.
b Persistent water circulation noises from the pump indicate that there is still air in the circuit.
- Close the unit’s inspection doors.

18
USE AND FUNCTIONS OF THE CONTROLLER
ABOUT THE CONTROLLER
The controller enables efficient use and operational control of the mixer system.
Intelligent control of the two parallel primary circuit pumps optimises energy consumption and ensures 60% system perfor-
mance even in the event of a malfunction in one of the pumps.
- When DHW is drawn off, the controller switches on the first pump. If this pump is not able to provide the required flow,
the controller then switches on the second pump to increase the flow and satisfy the user’s request. The controller also
switches the second pump on if DHW temperature fails to reach the setpoint within 5 seconds of the first pump being
switched on.
- If the demand for DHW falls significantly, the controller switches the second pump off to save energy and optimise
control of DHW temperature.
- A heating curve can be set for the primary circuit using dedicated control parameters (default min. temp. 48 °C; max.
temp. 60°C) to satisfy hot water requests instantly while avoiding the heat loss typically encountered with fixed setpoint
mixing systems.
At the time of the product being supplied, all the above parameters are factory set at default values; these can be re-
programmed, by an expert service technician, according to the demand at the point of use. The controller is not only
functional but extremely easy to use thanks to a virtually self-explanatory user interface. For each of the single setting
procedures, the keys are assigned to specific functions and explained. The controller menu contains key words for the
measured values and settings, as well as help texts and graphs.
MAIN CHARACTERISTICS:
- 0 - 10V output for pump speed control
- Backlit display showing text and graphic content
- Simple viewing of current measurement values
- Analysis and monitoring of the system by means of sta-
tistical graphs, etc.
- Extensive setting menus with explanations
- Menu lock: activated to prevent unintentional alteration
of settings
CONTROLLER TECHNICAL SPECIFICATIONS
Electrical specications:
Voltage 230VAC +/- 10%
Frequency 50...60Hz
Current draw 2V A
Contact capacity:
- total 460 VA (outputs 1-4)
- per relay 460 VA for AC1 / 185 W for AC3
- pump speed control 0-10 V output, internal load 10 kΩ
Internal fuse 2Aslow-blow 250V
Ingress protection/class IP40/II
Input sensors 4 x Pt1000 + 1 x VFS (vortex flow sensor)
Temperature sensors:
Immersion sensor Pt1000, e.g. TT/P4 up to 95 °C
Pipe-mounted sensor Pt1000, e.g. TR/P4 up to 95 °C
Vortex flow sensor return flow and temperature measurement
Sensor distance PT1000:2x1mm² up to 30 m max.
Maximum VFS cable length up to 3 m max.
Temperature resistance table for Pt1000 sensors
°C 0 10 20 30 40 50 60 70 80 90 100
Ω1000 1039 1077 1116 1155 1194 1232 1270 1308 1347 1385
b The controller must only be installed, put into service, repaired and changed by trained and qualified technical
personnel.

19
ENGLISH
b Before the unit can be put into service, the controller must be fitted and default settings programmed by specialist
personnel as required by local and national legislation and standards and in accordance with the safety precautions
and instructions given in this manual.
b Specialist personnel working on the controller must read this manual before proceeding.
b The controller requires no special maintenance.
b Read and understand all the precautions and instructions contained in this manual before operating the controller.
Take care to follow all the safety precautions. If in doubt, consult a specialist.
b The product is not designed to be operated by children or persons with limited physical, psychological, sensorial or
mental capacities. If such persons are allowed to operate the product, they must be instructed and supervised by
a person responsible for their safety.
b Make sure that children never play with the unit.
CONNECTION TERMINALS FOR EQUIPMENT, PUMPS, VALVES AND SENSORS
NNNNN 5R4R3R2R1R
R5INNNN2Z1Z+6S5S4S3S2S1S---- -- -- -- -- -- --
M
ANALOG PUMPS SIGNAL ANALOG PUMPS SIGNAL
PRIMARY OUTLET (RETURN)
CIRCULATION
MIDDLE OF STORAGE CYLINDER
PRIMARY INLET
VFS WATER TEMPERATURE
VFS FLOW l / min
Z2 Z1
+ S6 S5 S4 S3 S2 S1 --
R4
R3
R1
N2
MIXER OPEN
MIXER CLOSE
STORAGE CYLINDER MIDDLE VALVE
CIRCULATION PUMP
FWC5 CONTROLLER ANALOG
SIGNAL TERMINALS
FWC5 CONTROLLER
POWER TERMINALS
BOILER PUMP 2 BOILER PUMP 2
100/C14
R5I
100/C14
L2
100/C11
R2
X1.3 X1.4 X1.7 X1.8
X2.3 X2.4 X2.5 X2.6
X4.1 X4.2 X4.3 X4.4 X5.1 X5.2 X5.3 X5.4
X5.5
L

20
X1
POWER TO PUMPS
100/H14 5 1 5 O
100/J14 -SEL1:14 N2 2 N2 O
102/H5 Z1 3 Z1 X1.7 O
102/H4 Z2 4 Z2 X1.8 O
100/H17 6 5 6 O
100/J17 -SEL1:14 N2 6 N2 O
102/H6 Z1 7 Z1 X1.3 O
102/H5 Z2 8 Z2 X1.4 O
100/H10 4 9 4 O
100/J10 -SEL1:14 N2 10 N2 O
X3
PUMP ALARMS
101/H4 KALLP1:A1 7 1 7 ALLP1:12 O
101/H6 KALLP2:A1 8 2 8 ALLP2:12 O
101/H3 KALLPR:A1 9 3 9 ALLPRIC:12 O
101/B3 ALLPRIC:11 L2 4 L2 KALLPR:1 O
X5
TEMPERATURE SENSORS
102/J7 S5 1 S5 O
102/J7 S6 2 S6 O
102/J6 + 3 + O
102/J10 -- 4 -- X5.5 O
X2
VALVES
100/D18 L2 1 L2 -SEL1:24 O
100/I18 N2 2 N2 -SEL1:14 O
102/I18 R1 3 R1 O
102/I19 N2 4 N2 O
102/I17 R3 5 R3 O
102/I16 R4 6 R4 O
X4
FLOW SWITCH
102/J7 S5 1 S5 O
102/J7 S6 2 S6 O
102/J6 + 3 + O
102/J10 -- 4 -- X5.5 O
b Voltage-free contact R5 is always on to request heat when the 0-10V output is on.
b Relay R5 can only be used to power a 230 VAC device. Do not use it with low voltage control devices.