Ferroli DOMIcondens HE 26 C Instructions For Use, Installation And Maintenance

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Page 1

=

cod. 3540Z852 — Rev. 01 - 08/2012

DOMIcondens HE 26 C

700

400

330

196

115 200

INSTRUCTIONS FOR USE, INSTALLATION AND MAINTENANCE

Page 2

IMPORTANT

•

Your "benchmark" Installation, Commissioning and Service Record Log Book is enclosed in the last pages of this manual. “This record must be completed and left with the end user”.

Ferroli is a member of the Benchmark initiative and fully supports the aims of the programme.

Benchmark has been introduced to improve the standards of installation and commissioning of central heating systems in the UK and to encourage the regular servicing of all central heating systems to ensure safety and efficiency. Please see installation and servicing guidelines.

•

"Ferroli declare that no substances harmful to health are contained in the appliance or used during the appliance manufacture”.

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.

This symbols calls attention to a note or important notice.

2009/142

200

200

cod. 3540Z852 - Rev. 01 - 08/2012

Page 3

DOMIcondens HE 26 C

cod. 3540Z852 - Rev. 01 - 08/2012

1. GENERAL WARNINGS

• Carefully read and follow the instructions co ntained in this instruction booklet.

• After boiler installation, inform the user regarding its operation and give him this manual, which is an integral and essential part of t he product and must be kept with care for future reference.

• Installation and maintenance must be carried out by professionally qualified personnel, in compliance with the current regulatio ns and according to the manuf acturer's instructions. Do not carry out any operation on the sealed control parts.

• Incorrect installation or inadequate maintenance can result in damage or injury. The Manufacturer declines any liability for damage due to errors in installation and use, or failure to follow the instructions.

• Before carrying out any cleaning or maintenance operation, disconnect the unit from the electrical power supply using the switch and/or the special cut-off devices.

• In case of a fault and/or poor operation, deactivate the unit and do not try to repair it or directly intervene. Contact profession ally qualified personnel. Any repair/r eplacement of the products must only be carried out by qualified personnel using original replacement parts. Failure to comply with the above could affect the safety of the unit.

• This unit must only be used for its intended purpose. Any other use is deemed improper and therefore hazardous.

• The packing materials are potentially hazardous and must not be left within the reach of children.

• The unit must not be used by people (including children) with limited physical, sensory or mental abilities or without experience and knowledge of it, unless instructed or su pervised in its use by someone responsible for their safety.

• The unit and its accessories must be appropriately disposed of, in compliance with the current regulations.

• The images given in this manua l are a simplified representation of the product. In t his representation there may be slight and insignificant differences with respect to the product supplied.

2. OPERATING INSTRUCTIONS

2.1 Introduction

Dear Customer,

DOMIcondens HE 26 C is a high-efficiency sealed chamber condensing heat generator for heating and hot water production running on natural gas or LPG, and equipped with a microprocessor control system.

2.2 Control panel

Panel

fig. 1 - Control panel

Panel key fig. 1 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 mode 10 Summer mode 11 Multifunction 12 Eco (Economy) mode 13 Heating 14 Heating symbol 15 Burner lit and actual power level (flashing during combustion fault function) 16 Service Tool connection 17 Arrangement for clock

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 on the display.

The display (detail 11 - fig. 1) shows the actual heating delivery temperature and, during heating standby time, the message “d2”.

Domestic hot water (DHW)

A DHW demand (generated by drawing domestic hot water) is indicated by flashing of the hot water under the tap on the display.

The display (detail 11 - fig. 1) shows the actual DHW outlet temperature and, during DHW standby time, the message “d1“.

Comfort

A Comfort demand (reinstatement of temperature inside the boiler) is indicated by flashing of the water under the tap on the display. The display (detail 11 - fig. 1) shows the actual temperature of the water in the boiler.

Fault

In case of a fault (see cap. 4.4) the display shows the fault code (detail 11 - fig. 1) and, during safety standby times, the messages "d3" and "d4".

2.3 Lighting and turning off

Connection to the power supply

• During the first 5 seconds the display will also show the card software release.

• Open the gas cock ahead of the boiler.

• The boiler is now ready to function automatically whenever domestic hot water is drawn or in case of a heating demand (generated by Room Thermostat or Remote Temperature Control).

Turning the boiler off and on

Press the on/off button (detail 7 - fig. 1) for 5 seconds.

fig. 2 - Turning the boiler off

When the boiler is turned off, the PCB is still powered. Domestic hot water and heating are disabled. The antifreeze system remains activated. To relight the boiler, press the

on/off button (detail 7 - fig. 1) again for 5 seconds.

fig. 3

The boiler will be immediately ready to work whenever domestic hot water is drawn or in case of a heating demand (generated by the Room Thermostat or the Remote Timer control).

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. 3.3.

2.4 Adjustments

Summer/Winter Switchover

Press the summer/winter button (detail 6 - fig. 1) for 2 seconds.

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 the Summer mode, press the summer/winter button (detail 6 - fig. 1) again for 2 seconds.

Heating temperature adjustment

Use the heating buttons (details 3 and 4 - fig. 1) to vary the temperature from a min. of 30°C to a max. of 80°C; in any case, it is advisable not to operate the boiler below 45°C.

fig. 4

DHW temperature adjustment

Use the DHW buttons (details 1 and 2 - fig. 1) to adjust the temperature from a min. of 40°C to a max. of 50°C.

fig. 5

Room temperature adjustment (with optional room thermostat)

Using the room thermostat, set the temperature required in the rooms. If the room thermostat is not installed, the boiler will keep the system at the set system delivery setpoint temperature.

Room temperature adjustment (with optional remote timer control)

Using the remote timer control, set the required temperature in the rooms. The boiler will adjust the system water according to the required room temperature. For operation with remote timer control, please refer to the relevant instruction manual.

eco

comfort

reset

7102

16414

Page 4

DOMIcondens HE 26 C

cod. 3540Z852 - Rev. 01 - 08/2012

ECO/COMFORT selection

The unit has 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, thereby ensuring immediate availability of hot water on opening the tap, without waiting times.

The user can deactivate the device (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 the COMFORT mode, press the eco/comfort 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 controlled according to the outside weather conditions, to ensure high comfort and energy saving throughout the year. In particular, the system delivery temperature is decreased as the outside temperature increases, according to a specific "compensation curve”.

With Sliding Temperature adjustment, the temperature set with the heating buttons (detail 3 - 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 reset button (detail 6 - fig. 1) for 5 seconds to access the "Sliding temperature" menu; the display shows "CU" flashing.

Use the DHW buttons (detail 1 - fig. 1) to adjust the curve from 1 to 10 according to the characteristic. By setting the curve to 0, sliding temperature adjustment is disabled.

Press the heating buttons (detail 3 - fig. 1) to access parallel curve offset; the display shows "OF" flashing. Use the DHW buttons (detail 1 - fig. 1) to adjust the parallel curve offset according to the characteristic (fig. 6).

Press the reset 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. Proceed by increasing or decreasing in steps of one and check the result in the room.

fig. 6 - Example of compensation parallel curve offset

Adjustments from Remote Timer Control

If the Remote Timer Control (optional) is connected to the boiler, the above adjustments are managed according to that given in table 1.

Table. 1

Water system pressure regulation

The filling pressure read on the boiler water gauge with the system cold must be approx

1.0 bar. If the system pressure falls to values below minimum, the boiler stops and fault

F37 is displayed.

3. INSTALLATION

3.1 General Instructions

This unit must only be used for its intended purpose. This unit is designed to heat water to a temperature below boiling point and must be connected to a heating system and/or a water supply system for domestic use, compatible with its performance, characteristics and its heating capacity. Any other use is deemed improper.

BOILER INSTALLATION MUST ONLY BE CARRIED OUT BY QUALIFIED PERSONNEL, IN ACCORDANCE WITH ALL THE INSTRUCTIONS GIVEN IN THIS TECHNICAL MANUAL, THE PROVISIONS OF CURRENT LAW, THE PRESCRIPTIONS OF THE TECHNICAL STANDARDS (BS), ANY LOCAL REGULATIONS AND THE RULES OF PROPER WORKMANSHIP.

Incorrect installation can cause damage or injury for which the manufacturer declines any responsibility.

Installation of this unit must be carried out in strict compliance with the present instructions and the following regulations applicable in Great Britain.

Gas Safety Regulations (Installations & Use).

Local Building Regulations..

The Building Regulations (Part L).

The Buildings Standards (Scotland - Consolidated) Regulations. British Standards Codes of Practice (BSI):

Model Water By-Laws

For Northern Ireland, observe the current applicable regulations.

Safe handling of materials

Pay attention when handling the boiler insulation panels because the material they are made of could irritate the skin. No part of the boiler contains asbestos, mercury or CFC's.

Advice for transport and handling

For lifting and transport always take suitable safety precautions: keep your back straight, bend knees, do not turn your body, move feet, avoid bending forward or sideways and keep the load as close as possible to your body.

If possible, use a trolley or other suitable means to carry the boiler.

Grip the boiler firmly and, before lifting it, try and find the point where the load is concentrated in order to establish the centre of gravity and suitably reposition yourself.

3.2 Place of installation

The combustion circuit is sealed with respect to the place of installation, therefore the unit can be installed in any room. However, the place of installation must be sufficiently ventilated to prevent the creation of dangerous conditions in case of even small gas leaks. This safety standard is required by the EEC Directive no. 2009/142 for all gas units, including those with sealed chamber

The unit is suitable for operation in a partially protected place in compliance with EN 297 pr A6, for temperatures to -5°C. It is advisable to install the boiler under the slope of a roof, inside a balcony or in a sheltered recess.

Therefore the place of installation must be free of dust, flammable materials or objects or corrosive gases.

The boiler is arranged for wall mounting and comes standard with a hooking bracket. Fix the bracket to the wall according to the measurements given in the cover drawing and hook the boiler on it. A metal template for marking the drilling points on the wall is available by request. The wall fixing must ensure stable and effective support for the generator.

If the unit is enclosed in a cabinet or mounted alongside, a space must be provided for removing the casing and for normal maintenance operations

Heating temperature setting

Adjustment can be made from the Remote Timer Control menu and the boiler control panel.

Hot water temperature adjustment

Adjustment can be made from the Remote Timer Control menu and the boiler control panel.

Summer/Winter Switchover

Summer mode has priority over a possible Remote Timer Control heating demand.

Eco/Comfort selection

Adjustment can only be made from the boiler control panel.

90 85

20 10 0 -10 -20

8910

20 10 0 -10 -20

90 85

568910 7

OFFSET = 20 OFFSET = 40

B.S.

5440 Detail 1 Flues

B.S.

5440 Detail 2 Air supply and ventilation

B.S.

5449 ......... Systems for hot water production with forced circulation

B.S.

6798 ......... Installation of gas-fired boilers for hot water

B.S.

6891 ......... Gas systems

B.S.

7671 ......... IEE wiring system regulations

B.S.

4814 ......... Specifications for expansion tanks

B.S.

5482 ......... LPG systems

B.S.

7593 ......... Water treatment in central heating systems for domestic hot water production

B.S.

5546 ......... Installation of systems for domestic hot water production

B.S.

5955-8 ......... Installation of plastic pipes

Page 5

DOMIcondens HE 26 C

cod. 3540Z852 - Rev. 01 - 08/2012

3.3 Plumbing connections

Important

The heating capacity of the unit must be previously established by calculating the building's heat requirement according to the current regulations. To ensure proper operation and long boiler life, the plumbing system must be adequately sized and complete with all the necessary accessories, including a room thermostat, a thermostattable valve (TRV) etc. The system delivery and return pipes must have a diameter of at least 22 mm for the first 3 m of length from the unit.

If the system delivery and return pipes follow a path where air pockets can form in certain places, it is advisable to install vent valves at these points. Also, type "A" drain cocks must be installed at the lowest points in the system to allow complete emptying.

An automatic bypass with flow rate of at least 6 l/min. must be installed (connected as far away as possible from the boiler) if radiators with thermostatic valves have been connected.

fig. 7 - Automatic bypass connection

The temperature drop between the delivery manifold and the return to the boiler should not exceed 20°C.

Do not use the water system pipes to earth electrical appliances.

Before installation, carefully wash all the pipes of the heating system to remove any residuals or impurities that could affect proper operation of the unit (as required by BS 7593 Building regs Doc L).

Carry out the connections to the unit as indicated in fig. 8.

fig. 8 - Plumbing connections

Shutoff valve kit

Make sure to install the shutoff valves (supplied) between the boiler and the heating system, allowing the boiler to be isolated from the system if necessary.

The safety valve outlet must be connected to a copper pipe of 15 mm diameter with continuous fall from the boiler to run off the system water in case of overpressure in the heating circuit. Otherwise, if the discharge valve cuts in and floods the room, the boiler manufacturer cannot be held liable. The drain must be run to the outside of the building to avoid the risk of damage or injury due to the hot water in case of overpressure in the system.

Make the boiler connection in such a way that its internal pipes are free of stress. If a non-return valve is installed also on the DHW circuit (if provided for), it is necessary to install a safety valve between the boiler and the circuit (with the non-return valve at least 3 m from the boiler) or an expansion tank for domestic use.

For installation, follow the instructions contained in the kit.

Replenishing water

It is necessary to provide for replenishing of the water lost by the sealed system. Refer to standard BS6798 for the methods of filling and replenishing water in sealed systems. There must not be a direct connection between the central heating system of the boiler and the water mains. For the use of water coming from the water mains and direct pressurisation of the system, refer to the local water management by-laws. This connection must be interrupted after use.

The boiler comes standard with the connection (filling loop) shown in fig. 9. For installation, follow the instructions given on the instruction sheet enclosed with the kit

To replenish the water in the system:

• Fix the removable connection “1” between the two valves.

• Open the two cocks “2 and 3” until the pressure read on the water gauge is approx. 1 bar.

• Close the two cocks “2 and 3”.

• At the end of the operation, remove the removable connection “1”.

Reference is made to the provisions contained in the water management by-laws.

fig. 9 - Filling loop

Water treatment

If water treatment is necessary, Ferroli recommends the exclusive use of specific products such as Fernox or Sentinel to be applied according to the producer's instructions. For further information, please contact:

If the boiler is installed in an existing system, any unsuitable additives must be removed by thoroughly cleaning the system. Cleaning of all the systems must be done in compliance with the requirements of standard B.S. 7593.

In areas with hard water, treatment may be necessary in order to prevent scale from forming in the boiler.

Make sure to use the water treatment product in the right concentration, according to the producer's instructions.

3.4 Gas connection

The gas must be connected to the relevant union (see figure on cover) in conformity with the current regulations, with a rigid metal pipe or with a continuous surface flexible s/steel tube, installing a gas cock between the system and boiler. Make sure all the gas connections are tight.

Gas

Hot water

Additional expansion vessel C.H. (if required)

Filling point C.H.

Automatic Bypass

Cold water mains

36 60 60

89 95

204

158

1 3

52 4

Fernox Manufacturing Co. LTD.

Cookson Electronics, Forsyth Road Sheerwater, Woking, Surrey, GU21 5RZ Tel.: 0870 8700362

Sentinel Performance Solutions Ltd

The Heath Business & Technical Park Runcorn, Cheshire WA7 4QX Tel.: 0151 424 5351

Page 6

DOMIcondens HE 26 C

cod. 3540Z852 - Rev. 01 - 08/2012

3.5 Electrical connections

Important

The unit must be connected to an efficient earthing system in conformity with current safety regulations. Have the efficiency and suitability of the earthing system checked by professionally qualified personnel; the Manufacturer declines any liability for damage caused by failure to earth the system.

The boiler is prewired and provided with a "Y" type cable (without plug) for connection to the electric line. The connections to the power supply must be permanent and equipped with a double-pole switch with contact opening distance of at least 3 mm, installing fuses of max. 3A between the boiler and the line. Make sure to respect the polarities (LINE: brown wire / NEUTRAL: blue wire / EARTH: yellow/green wire) in connections to the electric line.

The unit's power cable must not be replaced by the user; if damaged, switch the unit off and have the cable replaced by professionally qualified personnel. If replacing the power cable, only use "HAR H05 VV-F" 3x0.75 mm2 cable with max. ext. diameter of 8 mm.

Room thermostat (optional)

IMPORTANT: THE ROOM THERMOSTAT MUST HAVE VOLTAGE-FREE CONTACTS. CONNECTING 230 V TO THE ROOM THERMOSTAT TERMINALS WILL PERMANENTLY DAMAGE THE ELECTRONIC BOARD.

When connecting time controls or a timer, do not take the power supply for these devices from their breaking contacts Their power supply must be by means of direct connection from the mains or with batteries, depending on the kind of device.

Accessing the electrical terminal block

Follow the instructions given in

fig. 10

to access the electrical connections terminal block. The lay-

out of the terminals for the various connections is also given in the wiring diagram in

fig. 26

fig. 10 - Accessing the terminal block

3.6 Fume ducts

Important

The unit is “type C” with sealed chamber and forced draught; the air inlet and fume outlet must be connected to one of the following extraction/suction systems. Before installation, check and carefully observe the above prescriptions. Also, comply with the provisions concerning the positioning of wall and/or roof terminals and the minimum distances from windows, walls, vents, etc.

Expansion

For fume exhaust pipes longer than 1 metre, during installation take in account the natural expansion of the materials when the boiler is operating.

To prevent any deformation, leave an expansion space of approx. 2 ÷ 4 mm for every metre of pipe.

Baffles

Boiler operation requires fitting the baffles supplied with the unit, according to that given in the following tables.

Before inserting the fume exhaust pipe, check the presence of the right baffle (when it is to be used) and that it is correctly positioned. The boilers are fitted standard with the smallest diameter baffle. To replace the baffle (ref. 1 -

fig. 11

), proceed as indicated in

fig. 11

Connection with coaxial pipes

Standard coaxial installation

fig. 12 - Standard coaxial installation

Other coaxial connections

fig. 13 - Examples of connection with coaxial pipes ( = Air / = Fumes)

Table. 2 - Typology

For coaxial connection, fit the unit with one of the following starting accessories. For the wall hole dimensions, refer to the figure on the cover. Any horizontal sections of the fume exhaust must be kept sloping slightly towards the outside, to prevent condensate from flowing back towards the unit.

fig. 14 - Starting accessory for coaxial ducts

Table. 3 - Baffles for coaxial ducts

139

138

Typ e Description C1X

Wall horizontal exhaust and inlet

C3X

Roof vertical exhaust and inlet

Coaxial 60/100 Coaxial 80/125

Max. permissible length 6 m 12 m

Reduction factor 90° bend 1 m 0.5 m Reduction factor 45° bend 0.5 m 0.25 m

Baffle to use

0 ÷ 2 m Ø 45 0 ÷ 6 m Ø 45 2 ÷ 4 m Ø 50 6 ÷ 12 m no baffle 4 ÷ 6 m no baffle

125

200 200

400

700

Ø100

125

196

330

700

Ø100

Drill the wall 10÷20 mm

more than the pipe diameter

Rear outlet

Side view

Side outlet

Front view

Between

10 e 60 mm

Between

10 e 60 mm

041025G0

041001X0

041002X0 041006X0

Ø 102

Ø 61.5

Ø 127

Ø 80.5

120

90.5

68.5

Ø 100.5

Ø 61.6

Page 7

DOMIcondens HE 26 C

cod. 3540Z852 - Rev. 01 - 08/2012

Connection with separate pipes

fig. 15 - Examples of connection with separate pipes ( = Air / = Fumes)

Table. 4 - Typology

For connection of the separate ducts, fit the unit with the following starting accessory:

fig. 16 - Starting accessory for separate ducts

Before installation, check the baffle to be used and make sure the maximum permissible length has not been exceeded, by means of a simple calculation:

1. Completely establish the layout of the system of split flues, including accessories and outlet terminals.

2. Consult the table 6 and identify the losses in m

(equivalent metres) of every com-

ponent, according to the installation position.

3. Check that the sum total of losses is less than or equal to the maximum permissible length in table 5.

Table. 5 - Baffles for separate ducts

Table. 6 - Accessories

Position of terminals

fig. 17

Connection to multiple flues or single flues with natural draught

To connect the DOMIcondens HE 26 C boiler to a multiple flue or a single flue with natural draught, the flue or chimney must be expressly designed by professionally qualified technical personnel in conformity with the current standards and regulations.

In particular, flues and chimneys must:

• Be sized according to the method of calculation given in the standard.

• Be tight with respect to the products of combustion, resistant to the fumes and heat and impermeable to condensate.

• Have a circular or square cross-section (some hydraulically equivalent sections are permissible), with a vertical progression and with no constrictions.

• Have the ducts conveying the hot fumes at a suitable distance or separately from combustible materials.

• Be connected to just one unit per floor, for not more than 6 units (8 if there is a compensation duct or opening).

• Have no mechanical suction devices in the main ducts.

• Be at low pressure, all along their length, in conditions of stationary operation.

• Have at their base a collection chamber for solid materials or condensate, of at least

0.5 m, equipped with an airtight metal door.

Typ e Description C1X

Wall horizontal exhaust and intake. The inlet/outlet terminals must be concentric or close enough to be undergo similar wind conditions (within 50 cm)

C3X

Roof vertical exhaust and intake. Inlet/outlet terminals like for C12

C5X

Wall or roof exhaust and intake separate or in any case in areas with different pressures. The exhaust and intake must not be positioned on opposite walls.

C6X

Intake and exhaust with separately certified pipes (EN 1856/1)

B2X

Intake from installation room and wall or roof exhaust

IMPORTANT - THE ROOM MUST BE PROVIDED WITH APPROPRIATE VENTILATION

Separate ducts

Max. permissible length

55 m

Baffle to use

0 ÷ 15 m

Ø 45

15 ÷ 35 m

Ø 50

35 ÷ 55 m

No baffle

Losses in m

Air

inlet

Fume exhaust

Vertical Horizontal

Ø 80

PIPE

1 m M/F 1KWMA83W 1.0 1.6 2.0

BEND

45° M/F 1KWMA65W 1.2 1.8 90° M/F 1KWMA01W 1,5 2.0

PIPE SECTION

with test point 1KWMA70W 0.3 0.3

TERMINAL

air, wall 1KWMA85A 2.0 fumes, wall with antiwind 1KWMA86A - 5.0

FLUE

Split air/fumes 80/80 010027X0 - 12.0 Fume outlet only Ø80 010026X0 +

1KWMA86U

-4.0

Ø 60

PIPE

1 m M/F 1KWMA89W 6.0

BEND

90° M/F 1KWMA88W 4.5

REDUCTION

80/60 041050X0 5.0

TERMINAL

fumes, wall with antiwind 1KWMA90A 7.0

ATTENTION: CONSIDER THE HIGH PRESSURE LOSSES OF Ø60 ACCESSORIES; USE THEM ONLY IF NECESSARY AND AT THE LAST FUME EXHAUST SECTION.

C5x

B2x C1x

max 50 cm

Ø 81Ø 81

Ø 65

Ø 87

Ø 65

041039X0

Minimum dimensions of fume exhaust terminals

Directly under an opening, air inlet, openable window, etc.

300 mm

Above an opening, air inlet, openable window, etc.

300 mm

Horizontally to an opening, air inlet, openable window, etc.

300 mm

Under gutters, drain pipes 75 mm

Under cornices or under eaves 200 mm

Under balconies or garages 200 mm

From a drain pipe or a vertical drain pipe

150 mm

From an internal or external corner 100 mm

Above ground level, a roof or balcony 300 mm

From a surface facing the terminal 600 mm

From a terminal facing the terminal 1200 mm

litres

From a garage opening (e.g. door, window) with access to the home

1200 mm

Vertically from a terminal on the same wall

1500 mm

Horizontally from a terminal on the same wall

300 mm

From the wall on which the terminal is fitted

N/A

From a vertical structure on the roof 150 mm

Above the intersection with the roof 300 mm

NOTES

•

N/A = Not applicable

• Also, the terminal must be at least 150 mm (in case of forced intake) from an opening made in the structure of the building to house a fitted element such as a window frame.

• Positions of condensate drain terminals: if the fume exhaust is provided for at a low level, the potential effect of the flue gas cloud must be considered. Special flue gas management kits are available by request.

• The flue gas cloud must not be directed towards:

- A frequented approach

- A window or door

- An adjacent property

D, E

Page 8

DOMIcondens HE 26 C

cod. 3540Z852 - Rev. 01 - 08/2012

3.7 Condensate drain connection

The boiler has an internal trap for draining the condensate. Fit the inspection union A and the flexible tube B, pressing it in for about 3 cm. Fill the trap with approx. 0.5 L of water and connect the flexible tube to the drainage system.

fig. 18 - Condensate drain connection

4. SERVICE AND MAINTENANCE

4.1 Adjustments

Gas conversion

The unit can operate on natural gas or LPG and is factory-set for use with one of these two gases, as clearly shown on the packing and on the dataplate. Whenever a gas different from that for which the unit is arranged has to be used, the special conversion kit will be required, proceeding as follows:

1. Replace the nozzles at the main burner, fitting the nozzles specified in the technical data table in cap. 5, according to the type of gas used

2. Modify the parameter for the type of gas:

• put the boiler in standby mode

• press the DHW buttons (details 1 and 2 - fig. 1) for 10 seconds: the display

shows “b01“ blinking.

• Press the DHW buttons (details 1 and 2 - fig. 1) to set parameter 00 (for nat-

ural gas operation) or 01 (for LPG operation).

• press the DHW buttons (details 1 and 2 - fig. 1) for 10 seconds.

• the boiler will return to standby mode

3. Adjust the minimum and maximum pressures at the burner (ref. relevant paragraph), setting the values given in the technical data table for the type of gas used

4. Apply the sticker contained in the conversion kit, near the dataplate as proof of the conversion.

TEST mode activation

Press the heating buttons (details 3 and 4 - fig. 1) together for 5 seconds to activate the TEST mode. The boiler lights at the maximum heating power set as described in the following section.

The heating and DHW symbols (fig. 19) flash on the display; the heating power will be displayed alongside.

fig. 19 - TEST mode (heating power = 100%)

Press the heating buttons (details 3 and 4 - fig. 1) to increase or decrease the power (min.=0%, max.=100%).

Press the DHW button "-" (detail 1 - fig. 1) and boiler power is immediately adjusted to min. (0%). Press the DHW button "+" (detail 2 - fig. 1) and boiler power is immediately adjusted to max. (100%).

If the TEST mode is activated and enough hot water is drawn to activate the DHW mode, the boiler remains in TEST mode but the 3-way valve goes to DHW.

To deactivate the TEST mode, press the heating buttons (details 3 and 4 - fig. 1) for 5 seconds.

The TEST mode is automatically disabled in any case after 15 minutes or on stopping of hot water drawing (if enough hot water is drawn to activate the DHW mode).

Pressure adjustment at the burner

Since this unit has flame modulation, there are two fixed pressure settings: minimum and maximum, which must be those given in the technical data table according to the type of gas.

• Connect a suitable pressure gauge to the pressure point "B" downstream of the

gas valve.

• Activate the TEST mode (see cap. 4.1).

• Press the Eco/Comfort button for 2 seconds to access the gas valve Calibration mode.

• The card goes to the setting “q02”; displaying the actually saved value, by pressing the DHW buttons .

• If the pressure gauge reading is different from the nominal maximum pressure, proceed by increases/decreases of 1 or 2 units of parameter “q02” by pressing the DHW buttons : the value is stored after each modification; wait 10 seconds for the pressure to stabilise.

• Press the heating button “-” (ref. 3 - fig. 1).

• The card goes to the setting “q01”; displaying the actually saved value, by pressing the DHW buttons .

• If the pressure gauge reading is different from the nominal minimum pressure, proceed by increases/decreases of 1 or 2 units of parameter “q01” by pressing the DHW buttons : the value is stored after each modification; wait 10 seconds for the pressure to stabilise.

• Recheck both adjustments by pressing the heating buttons and adjust them if necessary by repeating the above procedure.

• Press the Eco/Comfort button for 2 seconds to return to the TEST mode.

• Deactivate the TEST mode (see cap. 4.1).

• Disconnect the pressure gauge.

Heating power adjustment

To adjust the heating power, switch the boiler to TEST mode (see sec. 4.1). Press the heating buttons (detail 3 - fig. 1) to increase or decrease the power (min. = 00 - max. =

100). Press the reset button within 5 seconds and the max. power will remain that just

set. Exit TEST mode (see sec. 4.1).

4.2 Startup

Before lighting the boiler

• Check the seal of the gas system.

• Check correct prefilling of the expansion tank.

• Fill the water system and make sure all air contained in the boiler and the system has been vented.

• Make sure there are no water leaks in the system, DHW circuits, connections or boiler.

• Check correct connection of the electrical system and efficiency of the earthing system.

• Make sure the gas pressure for heating is that required.

• Make sure there are no flammable liquids or materials in the immediate vicinity of the boiler

Checks during operation

• Switch the unit on.

• Check the tightness of the fuel circuit and water systems.

• Check the efficiency of the flue and air/fume ducts while the boiler is working.

• Make sure the water is circulating properly between the boiler and the systems.

• Make sure the gas valve modulates correctly in the heating and domestic hot water production stages.

• Check correct boiler lighting by performing various tests, turning it on and off with the room thermostat or remote control.

• Make sure the fuel consumption indicated on the meter matches that given in the technical data table in cap. 5.

• Make sure that with no demand for heating, the burner lights correctly on opening a hot water tap. Check that in heating mode, on opening a hot water tap, the heating circulating pump stops and there is regular production of hot water.

• Make sure the parameters are programmed correctly and carry out any required customisation (compensation curve, power, temperatures, etc.).

0.5 l

3 cm

eco

comfort

reset

fig. 20 - Gas valve

- Upstream pressure point

- Downstream pressure point

- Gas valve electrical connection

- Gas outlet

- Gas inlet

fig. 21 - Gas valve connection

TYPE SGV100 Pi max 65 mbar 24 Vdc - class B+A

~ 65Ω

~ 24Ω

Page 9

DOMIcondens HE 26 C

cod. 3540Z852 - Rev. 01 - 08/2012

4.3 Maintenance

Periodical check

To ensure correct operation of the unit over time, have qualified personnel carry out a yearly check, providing for the following:

• The control and safety devices (gas valve, flow meter, thermostats, etc.) must function correctly.

• The fume exhaust circuit must be perfectly efficient. (Sealed chamber boiler: fan, pressure switch, etc. -The sealed chamber must be tight: seals, cable glands, etc.) (Open chamber boiler: anti-backflow device, fume thermostat, etc.)

• The air-fume end piece and ducts must be free of obstructions and leaks

• The burner and exchanger must be clean and free of deposits. For possible cleaning do not use chemical products or wire brushes.

• The electrode must be properly positioned and free of scale.

fig. 22 - Electrode positioning

• The gas and water systems must be airtight.

• The water pressure in the cold water system must be about 1 bar; otherwise, bring it to that value.

• The circulating pump must not be blocked.

• The expansion tank must be filled.

• The gas flow and pressure must correspond to that given in the respective tables.

4.4 Troubleshooting

Diagnostics

The boiler is equipped with an advanced self-diagnosis system. In case of a boiler fault, the display will flash together with the fault symbol (detail 11 - fig. 1) indicating the fault code.

There are faults that cause permanent shutdown (marked with the letter "A"): to restore operation, press the RESET button (detail 6 - fig. 1) for 1 second or RESET on the optional remote timer control if installed; if the boiler fails to start, it is necessary to eliminate the fault.

Faults marked with the letter "F" cause temporary shutdowns that are automatically reset as soon as the value returns within the boiler's normal working range.

List of faults

Table. 7

0,5

= =

Fault code

Fault Possible cause Cure

A01

No burner ignition

Excessive condensate level Empty / clean the trap

No gas

Check the regular gas flow to the boiler and that the air has been eliminated from the pipes

Ignition/detection electrode fault

Check the wiring of the electrode and that it is correctly positioned and free of any deposits

Faulty gas valve

Check the gas valve and replace it if

necessary Gas valve wiring disconnected Check the wiring Ignition power too low Adjust the ignition power

A02

Flame present signal with burner off

Electrode fault Check the ionisation electrode wiring Card fault Check the card

A03

Overtemperature protection activation

Heating sensor damaged

Check the correct positioning and

operation of the heating sensor No water circulation in the system Check the circulating pump Air in the system Vent the system

F04

Fume thermostat fault

Exchangers dirty (clogged on water side)

Clean the exchangers Faulty water circulation Fume thermostat contact open Check the thermostat Wiring disconnected Check the wiring

F05

Fume pressure switch fault (contact fails to close)

Wrong card parameter setting

Check the card parameter and modify

it if necessary

Fan fault

Wiring disconnected Check the wiring Faulty fan Check the fan Card fault Check the card

A06

No flame after the ignition phase

Low pressure in the gas system Check the gas pressure Burner minimum pressure setting Check the pressures

F07

Card parameter fault Wrong card parameter setting

Check the card parameter and modify

it if necessary

A09

Gas valve fault

Wiring disconnected Check the wiring

Faulty gas valve

Check the gas valve and replace it if

necessary

F10

Delivery sensor 1 fault

Sensor damaged

Check the wiring or replace the sensorWiring shorted Wiring disconnected

F11

DHW sensor fault

Sensor damaged

Check the wiring or replace the sensorWiring shorted Wiring disconnected

F14

Delivery sensor 2 fault

Sensor damaged

Check the wiring or replace the sensorWiring shorted Wiring disconnected

A16

Gas valve fault

Wiring disconnected Check the wiring

Faulty gas valve

Check the gas valve and replace it if

necessary

F20

Combustion control fault

Fan fault Check the fan and fan wiring

Wrong baffle

Check the baffle and replace it if nec-

essary Flue not correctly sized or

obstructed

Check the flue

A21

Poor combustion fault

Fault F20 generated 6 times in the last 10 minutes

See fault F20

A23

Set nominal system water pressure not reached within 4 minutes

Wrong card parameter setting

Check the card parameter and modify

it if necessary

A24

4 fillings within 24 hours Wrong card parameter setting

Check the card parameter and modify

it if necessary

F34

Supply voltage under 180V. Electric mains trouble Check the electrical system

F35

Faulty mains frequency Electric mains trouble Check the electrical system

F37

Incorrect system water pressure

Pressure too low Fill the system Water pressure switch damaged or

not connected

Check the sensor

F39

External probe fault

Probe damaged or wiring shorted Check the wiring or replace the sensor Probe disconnected after activat-

ing the sliding temperature

Reconnect the external probe or disa-

ble the sliding temperature

A41

Sensor positioning

Delivery sensor or DHW sensor detached from the pipe

Check the correct positioning and

operation of the sensors

F42

Heating sensor fault Sensor damaged Replace the sensor

F43

Exchanger protection activation.

No system H

O circulation

Check the circulating pump

Air in the system Vent the system

F50

Gas valve fault

Modulating Operator wiring disconnected

Check the wiring

Faulty gas valve

Check the gas valve and replace it if

necessary

A51

Poor combustion fault Inlet/exhaust flue obstruction Check the flue

Page 10

DOMIcondens HE 26 C

cod. 3540Z852 - Rev. 01 - 08/2012

5. TECHNICAL DATA AND CHARACTERISTICS

Table. 8 - Key of figure cap. 5

5.1 General view and main components

fig. 23 - General view

5.2 Water circuit

fig. 24 - Heating Circuit

fig. 25 - DHW Circuit

Sealed chamber

Automatic air vent

Gas inlet

Flowswitch

Domestic hot wat er outlet

DHW temperature sensor

Cold water inlet

Gas valve

System delivery

Expansion tank

System return

Room thermostat (not supplied)

Safety valve

Ignition and detection electrode

Fan

114

Water pressure switch

Combustion chamber

126

Contact fume thermostat

Burner assembly

138

External probe (not supplied)

Main nozzle

139

Room unit (not supplied)

Burner

145

Pressure gauge (water gauge)

Combustion chamber insulation

193

Trap

Copper exchanger for heating and hot water

277

Recuperator

Fume manifold

278

Double sensor (Safety + Heating)

Heating circulating pump

340

Bypass pipe

340

16 56

278

10 8 9 11

20 21

44 38

277

126

114

193

145

340

278

277

126

114

340

278

277

126

114

Page 11

DOMIcondens HE 26 C

cod. 3540Z852 - Rev. 01 - 08/2012

5.3 Technical data table 5.4 Diagrams

Pressure - power diagramsProdotto_24

A = LPG - B = NATURAL GAS

Circulating pump head / pressure lossesProdotto_24

A = Boiler pressure losses - 1, 2 and 3 = Circulating pump speed

Data Unit DOMIcondens HE 26 C

Max. heating capacity kW 25.0 (Q)

Min. heating capacity kW 10.0 (Q)

Max. Heat Output in heating (80/60°C) kW 24.4 (P)

Min. Heat Output in heating (80/60°C) kW 9.5 (P)

Max. Heat Output in heating (50/30°C) kW 26.0

Min. Heat Output in heating (50/30°C) kW 10.5

Max. Heat Output in hot water production kW 24.4

Min. Heat Output in hot water production kW 9.2

Efficiency class Directive 92/42 EEC -

NOx emission class - 3 (NOx)

Burner nozzles G20 no.x Ø 11 x 1.35

Gas supply pressure G20 mbar 20.0

Max. gas pressure at burner (G20) mbar 11.0

Min. gas pressure at burner (G20) mbar 2

Max. gas delivery G20

2.64

Min. gas delivery G20

1.06

Burner nozzles G31 no.x Ø 11 x 0.79

Gas supply pressure G31 mbar 37

Max. gas pressure at burner (G31) mbar 35.0

Min. gas pressure at burner (G31) mbar 5.0

Max. gas delivery G31 kg/h 1.96

Min. gas delivery G31 kg/h 0.78

Max. working pressure in heating bar 3 (PMS)

Min. working pressure in heating bar 0.8

Max. heating temperature °C 90 (tmax)

Heating water content litres 1.5

Heating expansion tank capacity litres 8

Heating expansion tank prefilling pressure bar 1

Max. working pressure in hot water production bar 9 (PMW)

Min. working pressure in hot water production bar 0.25

DHW flowrate

t 25°C l/min 14

DHW flowrate

t 30°C l/min 11.6 (D)

DHW flowrate

t 35°C l/min 10

Protection rating IP X5D

Power supply voltage V/Hz 230V/50Hz

Electrical power input W 135

Electrical power input in hot water production W 135

Empty weight kg 35

Type of unit

12-C22-C32-C42-C52-C62-C72-C82

B22-B

PIN CE 0461BU0942

G. C. n o. - -

0 500 1.000 1.500 2.000

Q [l/h]

H [m H

Page 12

DOMIcondens HE 26 C

cod. 3540Z852 - Rev. 01 - 08/2012

5.5 Wiring diagram

fig. 26 - Electrical circuit

230V 50 Hz

°T°

278

4321

38114

ABM01

193

126

DAY

22:00

REMOVE TO CONNECT

THE

CLOCK

139

138 72

Page 13

Page 14

Failure to install and commission according to the manufacturer’s instructions and complete this Benchmark Commissioning Checklist will invalidate the warranty. This does not affect the customer’s statutory rights.

If yes, and if required by the manufacturer, has a water scale reducer been ﬁtted?

CONDENSING BOILERS ONLY

The condensate drain has been installed in accordance with the manufacturer’s instructions and/or BS5546/BS6798 Yes

If the condensate pipe terminates externally has the pipe diameter been increased and weatherproof insulation ﬁtted? Yes

Page 15

Service Record

It is recommended that your heating system is serviced regularly and that the appropriate Service Interval Record is completed.

Service Provider

Before completing the appropriate Service Record below, please ensure you have carried out the service as described in the manufacturer’s instructions.

Always use the manufacturer’s speciﬁed spare part when replacing controls.

Date:

Engineer Name:

Company Name:

Telephone No.

Gas Safe Register No.

Comments:

Signature:

Date:

Engineer Name:

Company Name:

Telephone No.

Gas Safe Register No.

Comments:

Signature:

Date:

Engineer Name:

Company Name:

Telephone No.

Gas Safe Register No.

Comments:

Signature:

Date:

Engineer Name:

Company Name:

Telephone No.

Gas Safe Register No.

Comments:

Signature:

Date:

Engineer Name:

Company Name:

Telephone No.

Gas Safe Register No.

Comments:

Signature:

Date:

Engineer Name:

Company Name:

Telephone No.

Operative ID No.

Comments:

Signature:

Date:

Engineer Name:

Company Name:

Telephone No.

Gas Safe Register No.

Comments:

Signature:

Date:

Engineer Name:

Company Name:

Telephone No.

Gas Safe Register No.

Comments:

Signature:

Date:

Engineer Name:

Company Name:

Telephone No.

Gas Safe Register No.

Comments:

Signature:

Date:

Engineer Name:

Company Name:

Telephone No.

Gas Safe Register No.

Comments:

Signature:

Service 1 Service 2

Service 3 Service 4

Service 5 Service 6

Service 7 Service 8

Service 9 Service 10

Page 16

Before contacting Ferroli please have available the

completed BENCHMARK document (located in the back of this manual),

boiler serial number and model detail.

For Technical assistance during the installation, call our

Technical Helpline on 0843 479 0479.

You will be required to provide your Gas Safe Register Number.

Should you require a Service Engineer to visit, call our

Service Centre on 0843 479 0479.

Calls to these numbers are charged at National Rate from BT landlines.

Calls made from mobile networks may be considerable more.

Phone numbers:

Installer

Service Engineer

BECAUSE OF OUR CONSTANT ENDEAVOUR FOR IMPROVEMENT DETAILS MAY VARY SLIGHTLY FROM THOSE QUOTED IN THESE INSTRUCTIONS.

ALL SPECIFICATIONS SUBJECT TO CHANGE

Please note - to avoid incurring unnecessary expense, in the event of a boiler shut down, check

this is not caused by lack of electricity supply, gas supply or low water pressure before calling our

Customer Service Helpline.