Ferroli ECONCEPT TECH 25 C Instructions For Use, Installation And Maintenance
3540I371
cod. 3540I371 — 06/2008 (Rev. 00)
ECONCEPT TECH 25 C
INSTRUCTIONS FOR USE, INSTALLATION AND MAINTENANCE
ECONCEPT TECH 25 C
2 EN
B
Declaration of conformity
Manufacturer: FERROLI S.p.A.
Address: Via Ritonda 78/a 37047 San Bonifacio VR Italy
declares that this unit complies with the following EU directives:
• Gas Appliance Directive 90/396
• Efficiency Directive 92/42
• Low Voltage Directive 73/23 (amended by 93/68)
• Electromagnetic Compatibility Directive 89/336 (amended by 93/68)
President and Legal Representative
Cav. del Lavoro
Dante Ferroli
B
This symbol indicates "Caution" and is placed next to all safety warnings. Strictly follow
these instructions in order to avoid danger and damage to persons, animals and things.
A
This symbols calls attention to a note or important notice.
cod. 3540I371 - 06/2008 (Rev. 00)
• Carefully read the warnings in this instruction book-
let since they provide important information on safe
installation, use and maintenance.
• This instruction booklet is an integral part of the
product and must be carefully kept by the user for future reference.
• If the unit is sold or transferred to another owner or if
it is to be moved, always make sure that the booklet
accompanies the boiler so that it can be consulted
by the new owner and/or installer.
• Installation and maintenance must be carried out by
professionally qualified personnel, according to current regulations and the manufacturer's instructions.
• Incorrect installation or poor maintenance can cause
damage or physical injury. The manufacturer declines any responsibility for damage caused by errors in installation and use or by failure to follow the
manufacturer's instructions.
• Before carrying out any cleaning or maintenance op-
eration, disconnect the unit from the electrical power
supply using the switch and/or the special cut-off devices.
• In case the unit breaks down and/or functions poorly,
deactivate it, do not make any attempt to repair it or
directly intervene. Contact professionally qualified
personnel. Any repair/replacement of products must
only be carried out by qualified professional personnel using exclusively genuine parts. Failure to comply with the above could affect the safety of the unit.
• Periodical maintenance carried out by qualified personnel is essential for guaranteeing good operation
of the unit.
• This unit must only be used for the purpose for which
it was designed. Any other use is considered improper and therefore hazardous.
• After removing the packing, check the integrity of the
contents. Packing materials must not be left within the
reach of children as they are potentially hazardous.
• In case of doubt do not use the unit, and contact the
supplier.
• The images shown in this manual are a simplified
representation of the product. In this representation
there may be slight, unimportant differences with the
supplied product.
ECONCEPT TECH 25 C
3
3540I371
cod. 3540I371 - 06/2008 (Rev. 00)
1 Operating instructions ............................................................................................................4
1.1 Introduction............................................................................................................................................. 4
1.2 Control panel .......................................................................................................................................... 4
1.3 Turning on and off ..................................................................................................................................6
1.4 Adjustments............................................................................................................................................ 7
2 Installation.............................................................................................................................. 11
2.1 General Instructions .............................................................................................................................11
2.2 Place of installation ..............................................................................................................................11
2.3 Plumbing connections .......................................................................................................................... 11
2.4 Gas connection ....................................................................................................................................12
2.5 Electrical connections........................................................................................................................... 12
2.6 Fume ducts........................................................................................................................................... 14
2.7 Condensate drain connection...............................................................................................................18
3 Service and maintenance......................................................................................................19
3.1 Adjustments.......................................................................................................................................... 19
3.2 Start-up.................................................................................................................................................21
3.3 Maintenance......................................................................................................................................... 21
3.4 Troubleshooting.................................................................................................................................... 23
4 Technical data and characteristics ...................................................................................... 25
4.1 Dimensions and connections ...............................................................................................................25
4.2 General view and main components .................................................................................................... 26
4.3 Plumbing circuit .................................................................................................................................... 27
4.4 Technical data table .............................................................................................................................28
4.5 Diagrams .............................................................................................................................................. 29
4.6 Wiring diagram .....................................................................................................................................30
ECONCEPT TECH 25 C
4 EN
cod. 3540I371 - 06/2008 (Rev. 00)
1. Operating instructions
1.1 Introduction
Dear Customer,
Thank you for choosing ECONCEPT TECH 25 C, a FERROLI wall-mounted boiler featuring advanced design, cutting-
edge technology, high reliability and quality construction. Please read this manual carefully since it provides important
information on safe installation, use and maintenance.
ECONCEPT TECH 25 C is a high-efficiency and low emissions, sealed chamber premix condensing heat generator
for heating and domestic hot water production, running on natural gas or LPG and equipped with a microprocessor control system.
The boiler shell consists of an aluminium laminar exchanger and a premix burner (ceramic) equipped with electronic
ignition and ionisation flame control, modulating speed fan and modulating gas valve.
1.2 Control panel
fig. 1 - Control panel
Key
1 = DHW temperature setting decrease button
2 = DHW temperature setting increase button
3 = Heating system temperature setting decrease
button
4 = Heating system temperature setting increase
button
5 = Display
6 = "Sliding Temperature" menu - Summer/Winter
mode selection - Reset button
7 = Unit On/Off - Economy/Comfort mode selection
button
8 = DHW symbol
9 = DHW operation
10 = Summer mode
11 = Multifunction indication (flashing during ex-
changer protection function)
12 = Eco (Economy) mode
13 = Heating operation
14 = Heating symbol
15 = Burner On and actual power (flashing during
flame protection function)
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89
15
1314
12
11
10
21
436
75
ECONCEPT TECH 25 C
5EN
cod. 3540I371 - 06/2008 (Rev. 00)
Indication during operation
Heating
A heating demand (generated by the Room Thermostat or Remote Timer Control) is indicated by flashing of the hot air
above the radiator (details 13 and 14 - fig. 1).
The display (detail 11 - fig. 1) shows the actual heating delivery temperature and during DHW standby time, the message “d2”.
fig. 2
Domestic hot water (DHW)
A DHW demand (generated by drawing domestic hot water) is indicated by flashing of the hot water under the tap (details 8 and 9 - fig. 1).
The display (detail 11 - fig. 1) shows the actual DHW outlet temperature and during DHW standby time, the message
“d1“.
fig. 3
Comfort
A Comfort demand (restoration of temperature inside the boiler), is indicated by flashing of the water under the tap (detail 9 - fig. 1).
The display (detail 11 - fig. 1) shows the actual temperature of the water contained in the boiler.
fig. 4
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ECONCEPT TECH 25 C
6 EN
cod. 3540I371 - 06/2008 (Rev. 00)
1.3 Turning on and off
Boiler lighting
Switch on the power to the unit.
fig. 5 - Boiler lighting
• For the following 120 seconds the display will show FH which identifies the heating system air venting cycle.
• During the first 5 seconds the display will also show the card software release.
• Open the gas cock ahead of the boiler.
• When the message FH disappears, the boiler will be ready to operate automatically whenever domestic hot water
is drawn or in case of a room thermostat demand.
Turning the boiler off
Press the button (detail 7 - fig. 1) for 5 seconds.
fig. 6 - Turning the boiler off
When the boiler is turned off, the electronic board is still powered.
Domestic hot water and heating operation are disabled. The antifreeze system remains activated.
To relight the boiler, press the button (detail 7 fig. 1) again for 5 seconds.
fig. 7
The boiler will be immediately ready to operate whenever domestic hot water is drawn or in case of a room thermostat
demand.
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ECONCEPT TECH 25 C
7EN
cod. 3540I371 - 06/2008 (Rev. 00)
B
The antifreeze system does not work when the power and/or gas to the unit are turned off. To avoid damage
caused by freezing during long idle periods in winter, it is advisable to drain all water from the boiler, DHW
circuit and system; or drain just the DHW circuit and add a suitable antifreeze to the heating system, complying
with that prescribed in sec. 2.3.
1.4 Adjustments
Summer/Winter changeover
Press the button (detail 6 - fig. 1) for 2 seconds.
fig. 8
The display activates the Summer symbol (detail 10 - fig. 1): the boiler will only deliver domestic hot water. The antifreeze system remains activated.
To deactivate Summer mode, press the button (detail 6 - fig. 1) again for 2 seconds.
Heating temperature adjustment
Operate the heating buttons (details 3 and 4 - ) to adjustfig. 1the temperature from a min. of 20 °C to a max.
of 90 °C.
fig. 9
Domestic hot water (DHW) temperature adjustment
Operate the DHW buttons (details 1 and 2 - fig. 1) to adjust the temperature from a min. of 40 °C to a max.
of 55°C.
fig. 10
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ECONCEPT TECH 25 C
8 EN
cod. 3540I371 - 06/2008 (Rev. 00)
Room temperature adjustment (with optional room thermostat)
Using the room thermostat, set the temperature desired in the rooms. If the room thermostat is not installed the boiler
will keep the heating system at its setpoint temperature.
Room temperature adjustment (with optional remote timer control)
Using the remote timer control, set the temperature desired in the rooms. The boiler unit will set the system water according to the required room temperature. For information on the remote timer control, please refer to its user's manual.
ECO/COMFORT selection
The unit is equipped with a function that ensures a high domestic hot water delivery speed and maximum comfort for
the user. When the device is activated (COMFORT mode), the water contained in the boiler is kept hot, therefore ensuring immediate availability of hot water on opening the tap, without waiting times.
The device can be deactivated by the user (ECO mode) by pressing the button (detail 7 -
fig. 1
). In ECO mode the display
activates the ECO symbol (detail 12 -
fig. 1
). To activate COMFORT mode, press the button (detail 7 -
fig. 1
) again.
Sliding temperature
When the optional external probe is installed the boiler adjustment system works with "Sliding Temperature”. In this
mode, the temperature of the heating system is adjusted according to the outside weather conditions, in order to ensure
high comfort and energy saving throughout the year. As the outside temperature increases, the temperature of the heating system is decreased according to a fixed “compensation curve”.
With Sliding Temperature adjustment, the temperature set with the heating buttons (details 3 and 4 - fig. 1)
becomes the maximum system delivery temperature. It is advisable to set a maximum value to allow system adjustment
throughout its useful operating range.
The boiler must be adjusted at the time of installation by qualified personnel. Possible adjustments can in any case be
made by the user to improve comfort.
Compensation curve and curve offset
Press the button (detail 6 -
fig. 1
) for 5 seconds to access the "Sliding temperature" menu; "CU" appears flashing (
fig. 11
).
Operate the DHW buttons (details 1 and 2 - fig. 1) to adjust the required curve from 1 to 10 according to the
characteristic (fig. 13). By setting the curve to 0, sliding temperature adjustment is disabled.
fig. 11 - Compensation curve
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ECONCEPT TECH 25 C
9EN
cod. 3540I371 - 06/2008 (Rev. 00)
Press the heating buttons (details 3 and 4 - fig. 1) to access parallel curve offset; "OF" appears flashing
(fig. 12). Operate the DHW buttons (details 1 and 2 - fig. 1) to adjust parallel curve offset according to the
characteristic (fig. 14).
fig. 12 - Parallel curve offset
Press the button (detail 6 - fig. 1) again for 5 seconds to exit the “Sliding Temperature” menu.
If the room temperature is lower than the required value, it is advisable to set a higher order curve and vice versa. Pro-
ceed by increasing or decreasing in steps of one and check the result in the room.
fig. 13 - Compensation curves
fig. 14 - Example of parallel compensation curve shift
A
If the Remote Timer Control (optional) is connected to the boiler, the above adjustments are managed according to that given in table 1.
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20
30
40
50
60
70
80
90
85
20 10 0 -10 -20
1
2
3
4
5
68910 7
20
30
40
50
60
70
80
90
85
20 10 0 -10 -20
1
2
3
4
5
6
8910
7
20 10 0 -10 -20
20
30
40
50
60
70
80
90
85
1
2
3
4
568910 7
OFFSET = 20 OFFSET = 40
ECONCEPT TECH 25 C
10 EN
cod. 3540I371 - 06/2008 (Rev. 00)
Table. 1
Water system pressure adjustment
The filling pressure with system cold, read on the boiler water gauge, must be approx. 1.0 bar. If the system pressure
falls to values below minimum, the boiler card will activate fault F37 (fig. 15).
fig. 15 - Low system pressure fault
Operate the filling cock (detail 1 - fig. 16) and bring the system pressure to a value above 1.0 bar.
fig. 16 - Filling cock
A
Once the system pressure is restored, the boiler will activate the 120-second air venting cycle indicated on the
display by FH.
At the end of the operation always close the filling cock (detail 1 - fig. 16)
Heating temperature adjustment Adjustment can be made from the Remote Timer Control menu and the boiler
control panel.
DHW temperature adjustment Adjustment can be made from the Remote Timer Control menu and the boiler
control panel.
Summer/Winter changeover Summer mode has priority over a possible Remote Timer Control heating
demand.
Eco/Comfort selection On disabling DHW from the Remote Timer Control menu, the boiler selects
the Economy mode. In this condition, the button (detail 7 - fig. 1) on the
boiler panel is disabled.
On enabling DHW from the Remote Timer Control menu, the boiler selects
the Comfort mode. In this condition it is possible select one of the two modes
with the button (detail 7 - fig. 1) on the boiler panel.
Sliding Temperature Both the Remote Timer Control and the boiler card manage Sliding Tempera-
ture adjustment: of the two, the boiler card Sliding Temperature has priority.
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