Page 1
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 improvements 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)
Page 2
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 working 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 product 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 applicable 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 applicable 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.
Page 3
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
Page 4
4
WATER CIRCUIT
2
2
3
4
4
5
5
6
7
10
10
10
11
9
1
1
1
1
1
8
1
EAF
2
2
3
4
4
5
5
6
7
10
10
10
11
9
1
1
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
Page 5
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
Page 6
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)
Page 7
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
0
8
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
P
1
/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
Page 8
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 3,0403,5
0102030
0
2
4
6
8
10
12
0
20
40
60
80
100
120
02468101212
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
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9
ENGLISH
DIMENSIONS AND FITTINGS
MP
RP1
RS
RP2
EAFS
UACS
SC ACS 160 E - 225 E
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
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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
INDICATOR
PUMP 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
Page 11
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 8
101/C14
4
KALLP2
-HA1
X3.1
X3.2
X3.3 X3.4
Page 12
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
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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 facilitating 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.
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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 designed 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 unnecessary 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
Page 15
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 pressure 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, increase 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!
Page 16
16
SYSTEM VARIANT WITH SINGLE RETURN TO STORAGE CYLINDER
b
The following procedure must be completed before putting the system into service.
Proceed as follows to disable the return to the middle of the storage cylinder.
- 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 alongside 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 applicable 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
Page 17
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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.
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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 performance 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 reprogrammed, 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 statistical graphs, etc.
- Extensive setting menus with explanations
- Menu lock: activated to prevent unintentional alteration
of settings
CONTROLLER TECHNICAL SPECIFICATIONS
Electrical specications:
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
Ω 1000 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.
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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
R5I
NNNN2Z1Z+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
+
S6S5S4S3S2S1--
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
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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.
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ENGLISH
DISPLAY AND PROGRAMMING
With its clear graphic and text interface, the display (1)
provides intuitive guidance on the operation of the controller.
LED (2) lights green if a relay is active.
LED (2) lights red when the controller is in “Off” mode.
LED (2) blinks red slowly when the controller is in “Manual” mode.
LED (2) blinks red rapidly if an error occurs.
Commands are entered using four keys (4) and (3+4),
which are assigned context-sensitive functions.
The “esc” key (3) is used to cancel a command or exit
the current menu. When changes have been made and
are applicable, the controller will prompt for confirmation
to save.
The function of each of the other three keys (4) is shown in
the display line immediately above; the right-hand key is
generally used to confirm and select input data.
Examples of key functions:
+/- = increase/decrease values
↑/↓ = scroll menu up/down
yes/no = confirm/cancel
Info = additional information
Back = return to previous screen
ok = confirm selection
Confirm = confirm setting
esc
(1)
(2)
(3)
(4)
Meaning of symbols in the display:
Pump (revolves with pump in operation)
Flow meter
Heat exchanger
Temperature sensor
Mixer valve
Valve
Storage cylinder
Warning / Error message
Information
MENU SEQUENCE AND MENU STRUCTURE
Schematic or overview mode will appear if no key is pressed for a period of 2 minutes, or if "esc" is pressed to exit
the main menu.
Pressing any key in schematic or overview mode, the
main menu reappears. The following menus are available:
Exit main menu
OK
esc
1.Measurements
2.Statistics
1. Measurements Current temperature values with explanations
2. Statistics General system control information, including hours of operation, etc.
3. Display mode Selection of schematic mode or overview mode
4. Operating mode Automatic mode, manual mode, or controller Off
5. Settings Management of parameters required for normal operation
6. Special functions Program selection, sensor calibration, clock, additional sensor, etc.
7. Menu lock Protection against unintentional setting changes at critical points
8. Service data For diagnosis in the event of errors occurring
9. Language Language selection
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SETUP WIZARD
The first time the controller is switched on, once the language and the clock are set, a prompt will appear asking
whether or not the setup wizard is required. The wizard
can be called up again at a later time if needed, from the
special functions menu. The wizard will guide the user
through the basic settings in the correct sequence, providing a brief description of each parameter displayed.
Pressing “esc” once, the screen returns to the previous
value, so that it is always possible to go back or make
changes. Pressing “esc“ repeatedly, the steps of the selection procedure can be undone one by one, without
confirming the wizard input. Finally, accessing parameter 4.2 and selecting “Manual” mode, the installer can test the
various outputs with the components connected, and verify whether or not the readings from the sensors are reliable. This
done, automatic mode can be re-activated.
b
Observe the indications for individual parameters given on the following pages, and check whether or not further
settings are needed for the particular application.
FREE PROGRAMMING
If the intention is not to use the setup wizard, be sure to observe the following sequence when making the settings:
- Menu 6. Special functions – Time & date
- Menu 5. Settings, all parameters
Finally, accessing parameter 4.2 and selecting “Manual” mode, the installer can test the various outputs with the components connected, and verify whether or not the readings from the sensors are reliable. This done, automatic mode can
be re-activated.
b
Observe the indications for individual parameters given on the following pages, and check whether or not further
settings are needed for the particular application.
MEASUREMENTS (MENU 1)
Menu “1. Measurements” displays currently measured
temperatures.
Press “esc” or select “Exit measurements” to exit the
menu.
Press “Info” to view a short message explaining the measurement values.
Press “esc” or select “Overview” to exit the Info menu.
b
If “Error” appears in the display instead of the measurement value, this could mean that a temperature sensor is faulty or not connected properly. If the
cables are too long or the sensors not positioned
correctly, there could be minor deviations in the
measurement values. In this instance, the values
displayed can be compensated by making adjustments via the controller.
b
The temperature measured is the temperature at the outlet of the heat exchanger, which could differ from that measured at the taps. Small fluctuations in temperature at the taps are compensated generally by mixing water from
the main.
Setup wizard
YesNo
esc
Do you want to run the setup
wizard now?
1.Exit Measurements
Info
1.1.Storage ret. 19°C
1.2.Circulation 39°C
esc
Overview
1.1.Storage ret. 19°C
esc
Temperature of water in storage
return
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ENGLISH
STATISTICS (MENU 2)
Menu “2. Statistics” is used for function control and longterm monitoring of the system.
The Statistics menu contains the functions shown and described below.
Operating hours (menu 2.1)
Shows the hours of operation of the main DHW pump.
Operating hours circ. (menu 2.2)
Shows the hours of operation of the circulation pump.
Heat output (menu 2.3)
Displays the system’s heat output in kWh.
b
These values are purely indicative and serve only for a general assessment of system functioning.
Graphic overview (menu 2.4)
Provides a clear overview of “Operating hours” and “Heat output” data in the form of a bar graph. Various time ranges are
available to allow comparison. The two keys on the left can be used to scroll through the data.
Message log (menu 2.5)
Displays the last 10 system events, indicating date and time.
Reset/clear (menu 2.6)
Resets and clears individual statistics. The “All statistics” function clears all information except for error messages.
b
To run analyses on system data, the time must be set correctly in the controller. Remember that the clock will stop
and must be reset if the power supply to the controller is cut off for more than about 24 hours. An unsuitable setting
or a clock error can cause data to be deleted, recorded incorrectly, or overwritten. The manufacturer acknowledges
no liability for recorded data.
DISPLAY MODE (MENU 3)
Menu “3. Display mode” is used to select the appearance
of the controller’s display for normal operation. The default display appears if two minutes go by without any key
being pressed. The main menu appears again when a
key is pressed.
Press “esc” or select “Exit display mode” to exit the menu.
Schematic (menu 3.1)
In schematic mode, the various hydraulic systems are
shown along with the measured temperatures and operating states of the points of use.
Overview (menu 3.2)
In overview mode, the measured temperatures and operating states of the points of use are given in text form.
Alternating (menu 3.3)
In alternating mode, the schematic display and the overview display both appear for 5 seconds at a time.
2.Exit Statistics
OK
2.1.
Operating hours DHW
2.2.Operating hours circ.
esc
3.Exit display mode
Info
3.1.Schematic
3.2.Overview
esc
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OPERATING MODE (MENU 4)
Menu “4. Operating mode” allows selection of the desired
mode of operation: automatic, off, or manual. Press “esc”
or select “Exit operating mode” to exit the menu.
Automatic (menu 4.1)
b
Automatic is the normal operating mode of the
controller. Only automatic mode guarantees correct operation of the system, taking account of the
current temperatures and the selected parameter
settings! When restarted following a mains power
failure, the controller will revert automatically to the
operating mode last selected!
Manual (menu 4.2)
When “Manual" mode is activated, current temperatures and parameter settings are ignored by the controller. In this
situation, the system is liable to overheat and suffer serious damage. “Manual” operating mode must be used only by an
expert for conducting functional tests of short duration, or when setting up the controller! Relays and the components
connected to them are switched on or off by pressing a key, regardless of current temperatures and parameter settings.
Measured temperatures are also displayed on the screen, for monitoring and control purposes. The 0-10 V pump output
corresponds to “Relay 6” even though it is actually connected to the Z terminal.
Off (menu 4.3)
b
Selecting “Off” mode, all functions of the controller will be deactivated. Selecting “Off” mode could cause system
components to overheat. The measured temperatures are still displayed to provide an overview.
SETTINGS (MENU 5)
The parameters essential to normal operation of the controller are presented in menu 5. “Settings”.
Press “esc” or select “Exit settings” to exit the menu.
Tsetpoint (Menu 5.1) = Setpoint at sensor 5
The controller attempts to maintain a constant circulation
temperature at sensor 5 by controlling primary circuit
pump speed.
Setting range: 30 °C to 47 °C / Default: see table.
Tmax (Menu 5.2) = Maximum temperature at sensor 5
This is the maximum temperature permissible at sensor
5. If Tmax is exceeded, the pump is switched off. If the
temperature drops below Tmax again, the pump is switched back on.
Setting range: 60 °C to 75°C / Default: see table.
b
Temperature settings that are too high could cause scalding or damage to the system. Scalding protection must be
provided by the customer!
Primary ow Min. (Menu 5.3)
The temperature setpoint for the mixer valve when the flow rate is at its minimum.
Setting range: 40 °C to 59 °C / Default: see table.
Primary ow Max. (Menu 5.4)
The temperature setpoint for the mixer valve when the flow rate is at its maximum.
Setting range: 49 °C to 99 °C / Default:
Cold water (Menu 5.5) Cold water inlet temperature
The temperature of the domestic water supply fed into the system can be set here. This value is used to calculate heat
output.
Setting range: 0 °C to 60 °C / Default: see table.
VFS type (Menu 5.6) = Sets the type of vortex flow sensor used
This parameter sets the type of vortex flow sensor used.
Setting range: 1-12 l/min, 1-20 l/min, 2-40 l/min, 5-100 l/min, 10-200 l/min, 20-400 l/min / Default: see table.
Comfort (Menu 5.7)
With this function selected, hot water is pumped through the heat exchanger every 15 minutes to keep it hot.
4.Exit operating mode
OK
4.1.Automatic (selected)
4.2.Manual
esc
5.Exit settings
Info
5.1.Tset 61°C
5.2.Tmax 80°C
esc
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ENGLISH
Setting range: On, Off / Default: see table.
Circulation (Menu 5.8)
This parameter selects the circulation operating mode.
When “Request” mode is active, the circulation pump is switched on when hot water is drawn off.
In “Periods” mode the circulation pump is enabled to run only during set periods.
Setting range: Off, Request, Periods / Default: see table.
Purging time (Menu 5.9) = Circulation pump operation time
The circulation pump is switched off after this period of time even if the temperature setpoint for sensor 2 has not been
reached. This prevents the pump running unnecessarily, e.g. when the storage tank is too cold.
Setting range: 1 min to 180 mins / Default: see table.
Circulation pause time (Menu 5.10) = Circulation pump switching pause
To avoid the pump switching on and off frequently, this parameter sets a pause during which the pump cannot be switched on again after being switched off.
Setting range: 1 min to 20 mins / Default: see table.
Circ. Tmin. (Menu 5.11) = Minimum temperature at sensor S2
If circulation is enabled (see “Circulation period) and temperature drops below Circ.Tmin at sensor 2, or if a heat request
is received as a result of water being drawn off, the circulation pump is switched on.
Setting range: 10 °C to 90 °C / Default: see table.
Circulation hysteresis (Menu 5.12) = Circulation pump switching hysteresis
The circulation pump is only switched off if temperature exceeds TminS2 by this value (see “Circ. Tmin.”).
Setting range: 1 K to 20 K / Default: see table.
Circ. max. FR (Menu 5.13)
If the circulation flow rate exceeds this value, the circulation pump is switched off.
Setting range: 1 l/min to 100 l/min / Default: see table.
Circulation period (Menu 5.14) = Period during which the circulation pump is enabled
This function sets the time bands during which the circulation pump is enabled. Three separate time bands can be set
for each day of the week. Bands can be copied from one day to another.
Setting range: Off / 00:00 to 23:59 h / Default: see table.
b
Parameter 5.14 is only available if “Periods” mode is selected.
b
Circulation is disabled outside these time bands. The time settings are only used in “Periods” circulation mode.
b
The primary and circulation temperatures must be set bearing in mind the influence of one on the other.
SPECIAL FUNCTIONS (MENU 6)
Menu “6. Special functions” is used to set basic values.
b
With the exception of the clock, all settings must be entrusted solely to expert service technicians.
Press “esc” or select “Exit special functions” to exit the menu.
Time & date (Menu 6.1)
This function is used to set the current time and date.
b
To run analyses on system data, time must be set correctly in the controller. The clock will stop and must be reset if
power to the controller is cut off for more than about 24 hours. With the exception of the clock, all settings must be
entrusted solely to expert service technicians.
Sensor calibration (Menus 6.2.1 - 6.2.2 - 6.2.3 - 6.2.4 - 6.2.5 - 6.2.6)
Deviations of displayed temperatures with respect to actual temperatures, for example as a result of over-long cables or
badly positioned sensors, can be compensated manually in these parameters. Adjustments can be made for all sensors
in steps of 0.5°C °C.
Setting range for calibration of S1, S2, S3, S4, S5 and S6: -100°C to +100°C / Default: see table.
Setup wizard (Menu 6.3)
The setup wizard guides the user through the settings needed to render the system operational and provides a brief
description of each parameter displayed.
Pressing “esc” once, the screen returns to the previous value, so that it is always possible to go back or make changes.
Press “esc” repeatedly to return to the selection mode and exit the wizard.
b
The setup wizard should only be used by an expert service technician during the start-up procedure! Follow the
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instructions given in this manual for each parameter, and check whether or not further settings are required for the
particular system.
Factory settings (Menu 6.4)
This function can be used to return all settings to their default values.
b
Doing so will permanently erase all parameterization, analytical and other user-entered data from the controller.
After use of this function, all controller settings will again assume the default values listed in the table at the end of
this section.
Turn time (Menu 6.5.1)
The time in seconds for which the mixer valve turns (opening or closing), before a new temperature control measurement
is taken.
Setting range: 0.1 sec to 3 secs / Default: see table.
Pause factor (Menu 6.5.2)
This parameter sets a multiplication factor for calculated pause time. For example, if calculated pause time is 1, a setting
of 0.5 would halve it, while a setting of 4 would quadruple it.
Setting range: 0.1 sec to 4 secs / Default: see table.
Increase (Menu 6.5.3)
If a rapid increase in temperature occurs, this value is added to the DHW temperature to ensure that the mixer reacts
faster. As soon as measured temperature stops rising, the actual DHW temperature is used again.
Temperature is measured once every minute.
Setting range: 0 to 20 / Default: see table.
Anti-legionella (Menu 6.6 )
With the AL function activated, the controller heats the storage cylinder during a selectable period and for a set length of
time (AL residence time), until the target temperature setpoint (AL Tset) is reached. The 0-10V pump and the mixer valve
use AL Tset +1° as their reference temperature. As long as AL is active, Tmax is set to AL Tset +10° to prevent system
shutdown. The AL residence time condition is met when AL Tset +5° is held at S2 for the set time. This is displayed as
“AL heat” in the menu. If the AL function does not terminate successfully, a new attempt is made at the next AL period.
Menu 6.6.1 AL function - setting range: On, Off / Default: see table
Menu 6.6.2 AL T set - setting range: 60°C to 99 °C /Default: see table.
Menu 6.6.3 AL residence time - setting range: 1 min to 60 mins / Default: see table.
Menu 6.6.4 AL period - setting range: Mon to Sun, 0 to 24 h / Default: Daily from 3 to 5 a.m.
Menu 6.6.5 AL heat: - shows the date of the last successful AL cycle
Speed control (Menu 6.7)
b
The controller’s 0-10V output is capable of controlling special pumps. This function should only be selected and set
up by a specialist. Settings must be based on the specifications of the pump manufacturer.
Max. speed (6.7.1)
This is where the maximum speed of the pump is set. During the setting procedure, the pump runs at the selected speed
so that the flow rate can be determined. 100% corresponds to 10V, 90% to 9V etc..
Setting range: 70 to 100% / Default: see table.
Min. speed (Menu 6.7.2)
This is where the minimum speed of the pump is set. During the setting procedure, the pump runs at the selected speed
so that the flow rate can be determined.
Setting range: 12% to max speed minus 5% / Default: see table.
Pump u0 (Menu 6.7.3)
Some pumps, e.g. pumps with cable break detection, need a minimum voltage even when switched off. This minimum
voltage can be set here.
Setting range: 0 to 1.5 V / Default: see table.
Pump u0 (Menu 6.8)
The controller can control an auxiliary pump (like the second DHW pump in this mixer unit) to boost flow in the presence
of a high demand for hot water.
Flow On (Menu 6.8.1)
The auxiliary pump switches on when this flow rate is exceeded.
Setting range: 4 to 40 l/h / Default: see table.
Flow Off (Menu 6.8.2)
The auxiliary pump switches off when flow drops below this rate.
Setting range: 2 to 38 l/h / Default: see table.
On delay (Menu 6.8.3)
This sets a delay before the auxiliary pump switches on.
Setting range: 1 sec to 60 secs / Default: see table.
Limescale protection (Menu 6.9)
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ENGLISH
The circulation pump can be set to run for a few seconds after water has been drawn off to prevent the build-up of limescale in the heat exchanger.
Setting range: On, Off / Default: see table.
Circulation time (Menu 6.9.1)
This is the time for which the circulation pump runs after water has been drawn off to prevent the build-up of limescale in
the heat exchanger.
Setting range: 5 sec to 60 secs / Default: see table.
MENU LOCK (MENU 7)
Menu “7. Menu lock” can be used to safeguard the controller against unintentional changes to selected settings.
Press “esc” or select “Exit menu lock” to exit the menu.
The menus listed below remain fully accessible even
when the menu lock is active, and can be used to make
changes if necessary:
- Measurements
- Statistics
- Display mode
- Menu lock
- Service data
To lock the other menus, select “Menu lock ON”.
To re-enable the menus, select “Menu lock OFF”.
Setting range: On, Off / Default: see table.
SERVICE DATA (MENU 8)
Menu “8. Service data” can be used for the purposes of
diagnosis by the manufacturer or a technician when investigating errors, etc..
b
Use the table below to record displayed data if an
error occurs.
Press “esc” or select “Exit service data” to exit the menu.
LANGUAGE (MENU 9)
Menu “9. Languages” can be used to select the language in which menus are displayed and navigated. Selection is
prompted automatically at start-up.
The choice of languages may differ, depending on the controller model.
7.Exit menu lock
Info
7.1.Menu lock off
esc
8.FWC3-BRV 2008/09/29.3511
Info
8.2.Hot water 45°C
8.3.Circulation 43°C
esc
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TROUBLESHOOTING
The controller is a quality product and is designed and made to withstand many years of continuous use. The occurrence
of an error is often to be attributed to a fault in another component of the system rather than in the controller itself. The
following descriptions of certain errors and their causes should enable the installer and operator to avoid damage and to
restart the system as quickly and as cheaply as possible. It is obviously not possible to list all possible causes of errors.
The following is a list of the most common causes of errors, covering most error conditions. If the cause of the error is not
among those in the list, refer the problem to the controller’s retailer.
b
Danger! Risk of electric shock!
b
Only specialist personnel should open the controller and perform work inside it.
b
Disconnect the controller from the mains power supply before opening it.
MALFUNCTIONS
MALFUNCTIONS AND ERROR MESSAGES
If the controller detects a problem, the red LED flashes
and a warning symbol appears on the display. If the malfunction resolves itself, the warning symbol becomes an
information symbol and the red LED stops flashing.
To view details of the error, press the key under the warning or information symbol.
b
End users must not attempt to resolve malfunctions
in person. Always refer malfunctions to specialist
personnel!
esc
(Flashing LED +
error message)
Possible error messages Note for service personnel
Sensor x error
This means that there is/was a fault in the sensor, input to the controller or connecting cable.
Time & date
This screen appears automatically if power is disconnected for a significant time,
as the data and time must be verified and set again if necessary.
Temperature < 50
The temperature measured by sensor S4 has dropped below 50 °C. This means
that the temperature of the primary circuit is too low and it may be impossible to
deliver sufficient hot water.
Temperature > 80
The temperature measured by sensor S4 has exceeded 80 °C. This means that
the temperature of the primary circuit is too high and could lead to the formation of
limescale in the heat exchanger.
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ENGLISH
REPLACING THE CONTROLLER FUSE
REPLACING THE CONTROL PANEL FUSE
b
Repairs and maintenance must be entrusted exclusively to an expert service technician. Make sure
that power has been disconnected from the controller before commencing any work on it.
b
Use only the spare fuse supplied, or select a similar
fuse with the following specifications: T2A 250V
If the controller is connected to the power supply and does
not come into operation, or the display remains blank, the
internal fuse could be defective. In this situation, open up
the controller, remove the fuse and inspect it.
Replace the fuse with a new one of identical characteristics. Ascertain the cause of the fault (e.g. pump) and
replace it. Once the controller is powered up, make the
settings and check the operation of the outputs in manual
mode (function 4.2).
b
Repairs and maintenance must be entrusted exclusively to an expert service technician. Make sure
that power has been disconnected from the control
panel before commencing any work on it.
b
Use only the spare fuses supplied, or select similar
fuses with the following specifications: Dim. 10.3x38
10A gG.
N.B.: There are two fuses, one in each fuse holder.
Loosen the screws at each corner of the control panel
cover and remove the cover.
Pull down the black levers to open the fuse holders and
pull out the fuses.
Replace the blown fuse with another of the same type.
Close the fuse holders and replace the cover of the control panel, taking care not to pinch any wires.
Fuse
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DEFAULT PARAMETER SETTINGS TABLE
CHECKS
Menu Description Setting range
Default
ACS 160
Default
ACS 225
5. SETTINGS
5.1 T setpoint 30°C ÷ 47°C 45°C 45°C
5.2 T max 50°C ÷ 99°C 52°C 52°C
5.3 Primary flow min. 40°C ÷ 59°C 50°C 50°C
5.4 Primary flow max. 49°C ÷ 99°C 60°C 60°C
5.5 Cold water 0°C ÷ 60°C 10°C 10°C
5.6 VFS type 10 - 200 l/min 10 - 200 l/min
5.7 Comfort On / Off Off Off
5.8 Circulation Off / Request / Periods Request Request
5.9 Purging time 1 ÷ 180 min 2 min. 2 min.
5.10 Circulation pause time 1 ÷ 20 min 20 20
5.11 Circ. Tmin 10°C ÷ 90°C 35°C 35°C
5.12 Circulation hysteresis 1K ÷ 20K 5K 5K
5.13 Circ. max. FR 1 l/min ÷ 100 l/min 15 15
5.14 Circulation period - -
6. SPECIAL FUNCTIONS
6.1 Time and date - - -
6.2 Sensor calibration - - -
6.2.1 S1 calibration −100 ÷ 100 0 0
6.2.2 S2 calibration −100 ÷ 100 0 0
6.2.3 S3 calibration −100 ÷ 100 0 0
6.2.4 S4 calibration −100 ÷ 100 0 0
6.2.5 S5 calibration −100 ÷ 100 0 0
6.2.6 S6 calibration −100 ÷ 100 0 0
6.3 Setup wizard - - -
6.4 Factory settings - - -
6.5 Mixer - - -
6.5.1 Turn time 0,1 sec ÷ 3 sec 0,5 sec 0,5 sec
6.5.2 Pause factor 0,1 ÷ 4 1,5 1,5
6.5.3 Increase 0 ÷ 20 0 0
6.6 Anti-legionella - - -
6.6.1 AL function On / Off Off Off
6.7 Speed control - - -
6.7.1 Max. speed 70% ÷ 100% 100% 100%
6.7.2 Min. speed 12% ÷ 95% 25% 25%
6.7.3 Pump μ0 0 ÷ 1,5 V 0,7 V 0,7 V
6.8 Auxiliary pump - - -
6.8.1 Flow on 20 l/h ÷ 200 l/h 50 l/h 70 l/h
6.8.2 Flow off 10 l/h ÷ 40 l/h 30 l/h 40 l/h
6.8.3 Delay 1 sec ÷ 60 sec 3 sec 3 sec
6.9 Limescale protection On / Off On On
6.9.1 Limescale protection 5 sec ÷ 60 sec 20 sec 20 sec
On completion of the installation, perform the checks listed in the table below.
DESCRIPTION OK
All automatic or manual filling pumps removed.
Safety valve calibrated to 6 bar, and flow open.
Drain pipe from safety valve routed suitably.
Expansion vessel correctly located and pre-charged to 2.5 bar
Non-return valves activated as gravity brakes
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XXXXXXXX NN (02/16)
Commercial Of ces: Via Risorgimento, 23 A
23900 - Lecco
www.berettaboilers.com
Beretta reserves the right to modify the characteristics and
speci cations given in this publication at any time and without prior
notice as part of its policy of continuous product improvement.
This publication cannot therefore be understood as a contract with
third parties.
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