Ferroli ECONCEPT TECH 25 A Guide de dépannage

3540I301

cod. 3540I301 — 05/2008 (Rev. 00)

ECONCEPT TECH 25 A

INSTRUCTIONS FOR USE, INSTALLATION AND MAINTENANCE

ECONCEPT TECH 25 A

2EN

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

BThis 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.

AThis symbols calls attention to a note or important notice.

cod. 3540I301 - 05/2008 (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 fu-

ture 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 cur-

rent regulations and the manufacturer's instructions.

• Incorrect installation or poor maintenance can cause

damage or physical injury. The manufacturer de-

clines any responsibility for damage caused by er-

rors 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 de-

vices.

• 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 person-

nel using exclusively genuine parts. Failure to com-

ply with the above could affect the safety of the unit.

• Periodical maintenance carried out by qualified per-

sonnel 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 im-

proper 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 A

3540I301 cod. 3540I301 - 05/2008 (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 ....................................................................................................................................13

2.5 Electrical connections...........................................................................................................................14

2.6 Fume ducts...........................................................................................................................................15

2.7 Condensate drain connection...............................................................................................................19

3 Service and maintenance...................................................................................................... 20

3.1 Adjustments..........................................................................................................................................20

3.2 Start-up.................................................................................................................................................22

3.3 Maintenance.........................................................................................................................................22

3.4 Troubleshooting....................................................................................................................................24

4 Technical data and characteristics ...................................................................................... 26

4.1 Dimensions and connections ...............................................................................................................26

4.2 General view and main components ....................................................................................................27

4.3 Plumbing circuit ....................................................................................................................................28

4.4 Technical data table .............................................................................................................................29

4.5 Diagrams ..............................................................................................................................................30

4.6 Wiring diagram .....................................................................................................................................31

ECONCEPT TECH 25 A

4EN

cod. 3540I301 - 05/2008 (Rev. 00)

1. Operating instructions

1.1 Introduction

Dear Customer,

Thank you for choosing a ECONCEPT TECH 25 A wall-mounted boiler featuring FERROLIadvanced design, cutting-

edge technology, high reliability and quality construction. Please read this manual carefully as it provides important in-

formation on safe installation, use and maintenance.

ECONCEPT TECH 25 A is a high-efficiency sealed chamber premix condensing heat generator for heating and do-

mestic hot water production (with optional external hot water tank) with extremely low emissions, running on natural gas

or LPG and equipped with a microprocessor control system.

The boiler shell consists of an aluminium lamellar exchanger and a ceramic premix burner equipped with electronic

ignition and ionisation flame control, modulating speed fan and modulating gas valve.

The sealed chamber appliance is suitable for indoor installation or outdoors in a partially protected place (according to

EN 297/A6) with temperatures to -5°C (-15°C with optional antifreeze kit).

The boiler is arranged for connection to an external storage tank for hot water production (optional). In this manual

all the functions relevant to domestic hot water production are only active with the optional hot water tank connected as

indicated in sec. 2.3.

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 = Summer/Winter mode selection - Reset button -

"Sliding Temperature" Menu

7 = Unit On/Off - Economy/Comfort mode selection

button

8 = DHW symbol

9 = DHW circuit operation

10 = Summer mode

11 = Multifunction (blinking during the exchanger pro-

tection function)

12 = Eco (Economy) mode

13 = Heating operation

14 = Heating symbol

15 = Burner On and actual power (blinking during the

flame protection function)

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436

ECONCEPT TECH 25 A

5EN cod. 3540I301 - 05/2008 (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 mes-

sage “d2”.

fig. 2

Hot water

A DHW demand (generated by drawing domestic hot water) is indicated by flashing of the hot water under the tap (de-

tails 8 and 9 - fig. 1).

The display (detail 11 - fig. 1) shows the actual hot water outlet temperature and, during DHW standby time, the mes-

sage “d1“.

fig. 3

Exclude hot water storage tank (economy)

Hot water storage tank temperature maintaining/heating can be excluded by the user. If excluded, domestic hot water

will not be delivered.

The hot water tank can be deactivated by the user (ECO mode) by pressing the ECO/COMFORT button (detail 7 -

fig. 1). In ECO mode the display activates the ECO symbol (detail 12 - fig. 1). To activate COMFORT mode, press the

ECO/COMFORT button (detail 7 - fig. 1) again.

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ECONCEPT TECH 25 A

6EN

cod. 3540I301 - 05/2008 (Rev. 00)

1.3 Turning on and off

Boiler lighting

Switch on the power to the unit.

fig. 4 - 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. 5 - 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. 6

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 A

7EN cod. 3540I301 - 05/2008 (Rev. 00)

BThe 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. 7

The display activates the Summer symbol (detail 10 - fig. 1): the boiler will only deliver domestic hot water. The anti-

freeze 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 adjust

fig. 1

the temperature from a min. of 20 °C to a max. of 90 °C.

fig. 8

Hot water temperature adjustment

Operate the DHW buttons (detail 1 and 2 -

fig. 1

) to adjust the temperature from a min. of 10°C to a max. of 65°C.

fig. 9

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ECONCEPT TECH 25 A

8EN

cod. 3540I301 - 05/2008 (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 ac-

cording to the required room temperature. For information on the remote timer control, please refer to its user's manual.

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 heat-

ing 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. 10).

Operate the DHW buttons (details 1 and 2 - fig. 1) to adjust the required curve from 1 to 10 according to the

characteristic (fig. 12). By setting the curve to 0, sliding temperature adjustment is disabled.

fig. 10 - Compensation curve

Press the heating buttons (details 3 and 4 - fig. 1) to access parallel curve offset; "OF" appears flashing

(fig. 11). Operate the DHW buttons (details 1 and 2 - fig. 1) to adjust parallel curve offset according to the

characteristic (fig. 13).

fig. 11 - Parallel curve offset

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ECONCEPT TECH 25 A

9EN cod. 3540I301 - 05/2008 (Rev. 00)

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. 12 - Compensation curves

fig. 13 - Example of parallel compensation curve shift

AIf the Remote Timer Control (optional) is connected to the boiler, the above adjustments are managed accord-

ing to that given in table 1.

Table. 1

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.

20 10 0 -10 -20

68910 7

20 10 0 -10 -20

8910 7

20 10 0 -10 -20

568910 7

OFFSET = 20 OFFSET = 40

ECONCEPT TECH 25 A

10 EN

cod. 3540I301 - 05/2008 (Rev. 00)

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. 14).

fig. 14 - Low system pressure fault

Operate the filling cock (detail 1 - fig. 15) and bring the system pressure to a value above 1.0 bar.

fig. 15 - Filling cock

AOnce 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. 15)

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