Ferroli DOMIcondens F 28 Instructions For Use, Installation And Maintenance

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DOMIcondens F 28

196

330

115 200

400

3540S920

cod. 3540S920 — 05/2009 (Rev. 00)

INSTRUCTIONS FOR USE, INSTALLATION AND MAINTENANCE

700

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1. GENERAL INSTRUCTIONS

• Carefully read the instructions contained in this instruction booklet.

• After boiler installation, inform the use r reg ardi ng its op erat ion an d give him this man ual , which is an integral and essential part of the product and must be kept with care for future reference.

• Installation and maintenance mu st be carr ied out by p rofessio nally qua lified p erson nel, accord ing to current regulations and the manufacturer's instructions. Do not carry out any operation on the sealed control parts.

• Incorrect installation or inadequa te maintenance ca n result in damag e or injury. The Manufacturer declines any liability for damage du e to errors in installation and use or failu re to follow the instructions.

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

• In case of a fault and/or poor operation, de activate the unit and do not attempt to repair it or directl y intervene. Contact professionally qualified personnel. Repair/replacement of the products must only be carried out by professionally qualified using original spare 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 considered improper and therefore dangerous.

• The packing materials are potentially hazar dous and must not be lef t withi n the reach of chi ldre n.

• The images given in this ma nual are a simpli fi ed repr ese ntat ion o f the produc t. I n this repres entation there may be slight and insignificant differences with respect to the product supplied.

2. OPERATING INSTRUCTIONS

2.1 Introduction

Dear Customer, DOMIcondens F 28 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

10 11

eco

comfort

reset

DOMIcondens F 28

Boiler lighting and shutdown 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 operate whenever domestic hot water is drawn or in case of a room thermostat demand.

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 idl e periods in win-

ter, 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 setting

Use the heating buttons (detail 3 - fig.1) to adjust the temperature from a min. of 30°C to a max. of 85°C; it is advisable not to operate the boiler below 45°C.

Key

1 = Domestic hot water temperature setting 3 = Heating system temperature setting 5 = Display 6 = Summer/Winter mode selection - Reset button 7 = Unit On/Off - Eco/Comfort mode selection button 9 = DHW mode 10 = Summer mode 11 = Temperature or faults 12 = Eco (Economy) mode 13 = Heating 15 = Burner On and actual power 16 = Clock prearrangement

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.

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.

2.3 Lighting and turning off

Connection to the power supply

• During the first 5 seconds the display shows the card software version.

• Open the gas cock ahead of the boiler.

• The boiler is now ready to operate automatically whenever hot water is drawn or in case of a room thermostat demand.

fig. 1 - Control panel

fig. 4

Hot water temperature adjustment

Use the DHW buttons (detail 1 - fig. 1) to adjust the temperature from a min. of 40°C to a max. of 55°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 deliver y setpo int 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 selection

The unit has a function that ensures a high domestic hot wat er deliver y sp eed a nd ma ximum 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 eco/comfort button (detail 7 - fig. 1) with the boiler in standby mode. 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.

cod. 3540S920 - 05/2009 (Rev. 00)

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DOMIcondens F 28

Adjustments from Remote Timer Control

If the Remote Timer Control (optional) is connected to the boiler, the above ad-

justments are managed according to that given in table 1.

Table. 1

Heating temperature setting

Hot water temperature adjustment

Summer/Winter Switchover

Eco/Comfort selection

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 wit h 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):

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

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

Adjustment can only be made from the boiler control panel.

3.2 Place of installation

The combustion circuit is sealed with respect to the place of installation room, therefore the unit can be installed in any room. However, the place of installation must be adequately ventilated to prevent the creation of dangerous conditi ons in case of even small gas leaks. This safety regulation is laid down by EEC Directive no. 90/396 for all gas units, including those with sealed chamber.

The unit is suitable for operation in a partially prot ected place in conf ormity wit h EN 297/ A6, with minimum temperature -5°C. If equipped with the special antifreeze kit, it can be used with minimum temperatures to -15°C. The boiler must be installed is a protected place, e.g. under the slope of a roof, inside a balcony or in a sheltered recess.

The place of installation must in any case 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. The wall fixing must ensure a stable and effective support for the generator.

If the unit is enclosed in a cabinet or mounted alongside, a space must be pro-

vided for removing the casing and for normal maintenance operations

3.3 Water 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 adequatel y 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 fo rm 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.

Hot water

Gas

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 ta n ks

B.S.

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

B.S.

7593 ......... Water treatment in central heating systems for domestic hot w a ter pr oduction

B.S.

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

Model Water By-Laws

B.S.

5955-8 ......... Installation of plastic pipe s

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 straig ht, 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 t he load is concen-

trated in order to establish the centre of gravity and suitably reposition yourself.

Cold water mains

Additional expansion vessel C.H. (if required)

Automatic Bypass

fig. 6 - 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.

Filling point C.H.

3540S920

cod. 3540S920 - 05/2009 (Rev. 00)

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DOMIcondens F 28

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 req uired by BS 7593 Building regs Doc L).

Carry out the connections to the unit as indicated in fig. 7.

1 3

52 4

39 60 60

fig. 7 - Water connections

Shutoff valve kit

Make sure to install the shutoff valves (supplied) betwee n 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 pip e of 1 5 mm diameter with continuous fall from the boiler to run off the system water in case of over-

pressure 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 water coming from the water mains and direct pressurisation of the system, refer to the local water management by-laws. This connection, if provided for, must be interrupted after use.

A connection example (filling loop) is shown in fig. 8.

1 Filling point C. H. 15 mm isolation valve 2 Temporary flexible connection 3 Cold water supply 15 mm isolation valve 4 Double check valve

86 95

3.4 Gas connection

The gas must be connected to the relevant connect ion (see fig.7) in conformity with current standards, 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.

3.5 Electrical connections

The unit must be connected to an efficient earthing system in accordance with current safety standards. Have the efficiency and suitability of the earthing sys-

tem 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 grid must be made with a permanent connection and equipped with a double-pole switch with contact opening of at least 3 mm, installing fuses of max. 3A b etween 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 user must not replace the unit's power cable. If dama ged, switch off the unit and have the cable replaced only by professionally qualified personnel. If re-

placing the power cable, only use "HAR H05 VV-F" 3x0.75 mm2 cable with max. outside diameter of 8 mm.

Room thermostat (optional)

IMPORTANT: THE ROOM THERMOSTAT MUST HAVE VOLTAGE-FREE CONTACTS. CONNECTING 230V TO THE ROOM THERMOSTAT TERMI-

NALS WILL PERMANENTLY DAMAGE THE PCB. When connecting a time control or timer, do not take the power su pply for such

devices from their cutoff contacts. Th ei r po w e r supp l y m us t be ta ke n wi th a d irect connection from the mains or with batteries, depending on the type of device.

Accessing electrical terminal block

Follow the instructions given in fig. 9 to access the electrical connection terminal block. The layout of the terminals for the various connections is also gi ven in the wirin g diagram in fig. 21.

fig. 8 - Filling loop

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

Fernox Manufacturing Co. LTD.

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

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 orde r to prevent scale

from forming in the boiler. Make sure to use the water treatment product in the right concentration, acco rd-

ing to the producer's instructions.

Sentinel Performance Solutions Ltd

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

fig. 9 - Accessing the terminal block

3.6 Fume ducts Important

The unit is “type C” with sealed chamber and forced dra ught; the ai r inlet and fume o utlet 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 termi nals and the mi nimum distance s from windows, walls, vents, etc.

Expansion

For fume exhaust pipes longer than 1 metre, during installa tion take in a ccount

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.

cod. 3540S920 - 05/2009 (Rev. 00)

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DOMIcondens F 28

Baffles

Boiler operation requires fitting the baffles supplied wit h the un it, according t o th at given in the following tables.

Before inserting the f ume exhaus t pipe, ch eck the pr esence 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.10), proceed as indicated in fig.10.

fig. 10

Connection with coaxial pipes

Standard coaxial installation

010007X0

Rear outlet

Side view

196

Ø100

Drill the wall 10÷20 mm

Between

10 e 60 mm

125

1KWMA56W

more than the pipe diameter

Side outlet

Front view

200 200

Ø100

Between

10 e 60 mm

125

Connection with separate pipes

fig. 14 - Examples of connection with separate pipes ( = Air / = Fumes)

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

Ø 81Ø 81

Ø 65

Ø 87

Ø 65

fig. 15 - Starting accessory for separate ducts

Before proceeding with 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 4 and identify the losses in m 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 3.

(equivalent metres) of every com-

700

330

700

400

fig. 11 - Standard coaxial installation

Other connections coaxial

fig. 12 - Examples of connection with coaxial pipes ( = Air / = Fumes)

For coaxial connection, fit the unit with one of the following starting a ccessories. For t he wall hole dimensions, refer to the figure on the cover. Anyhorizontal sections of the f ume exhaust must be kept slopingslightly towards the outside, to prevent possible condensate from flowing back towards the unit.

125

100

45.6

123.5

100

118

Table. 3 - Baffles for separate ducts

Separate ducts

Max. permissible length

Baffle to use

0 ÷ 15 m 15 ÷ 35 m 35 ÷ 55 m

55 m

eq eq

Ø 45 Ø 50

No baffle

Table. 4 - Accessories

Losses in m

Air

inlet

PIPE

1 m M/F 1KWMA83W 1.0 1.6 2.0

BEND

45° M/F 1KWMA65W 1.2 1.8

Fume exhaust

Vertical Horizontal

90° M/F 1KWMA01W 1.5 2.0

Ø 80

PIPE SECTION

TERMINAL

with test point 1KWMA70W 0.3 0.3 air, wall 1KWMA85A 2.0 fumes, wall with antiwind 1KWMA86A - 5.0

FLUE

Split air/fumes 80/80 1KWMA84U - 12.0

3.7 Condensate drain connection

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

fig. 13 - Starting accessory for coaxial ducts

010014X0010006X0 010007X0

Table. 2 - Baffles for coaxial ducts

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

0 ÷ 2 m Ø 45 0 ÷ 6 m Ø 45

Baffle to use

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

cod. 3540S920 - 05/2009 (Rev. 00)

fig. 16 - Condensate drain connection

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DOMIcondens F 28

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 different gas to that for which the unit is preset has to be used, a 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 reset button (detail 6 - fig.1) for 10 seconds: the display shows “TS“

flashing

• press the reset button (detail 6 - fig. 1): the display shows “P01“.

• Press the DHW buttons (detail 1 - fig. 1) to set parameter 00 (for operation with

natural gas) or 01 (for operation with LPG).

• Press the reset button (detail 6 - fig. 1) for 10 seconds.

• the boiler will return to standby mode

3. Adjust the minimum and maximum pressures at the burner (ref. relevant section), 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 (detail 3 - fig. 1) at the same time for 5 seconds to activate the TEST mode. The boiler lights at the maximum heating power set as de scribed in the following section.

The heating and DHW symbols (fig. 17) flash on the display; the heating power will be displayed alongside.

FHI

E G

fig. 17 - TEST mode (heating power = 100%)

To deactivate the TEST mode, repeat the activation sequence. The TEST mode is automatically disabled in any case after 15 minutes.

Adjustment of pressure at burner

Since this unit has flame modulation, there are two fixed pressure values: the 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 pressure point "B" downstream of the gas valve.

• Disconnect the pressure compensation tube “N”.

• Remove the protection cap “D”.

• Operate the boiler in TEST mode.

• Adjust the maximum pressure by turning the screw “G” clockwise to increase the pressure and anticlockwise to decrease it.

• Disconnect one of the two fastons "C" from the modureg "F" on the gas valve.

• Adjust the minimum pressure by turning the screw "E" clockwise to increase the pressure and anticlockwise to decrease it.

• Turn the burner on and off, checking that the minimum pressure remains stable.

• Reconnect the faston "C" detached from the modureg "F" on the gas valve

• Check that the maximum pressure has not changed

• Reconnect the pressure compensation tube “N”.

• Refit the protection cap “D”.

• To end the TEST mode, repeat the activation sequence or wait 15 minutes.

After checking or adjusting the pressure, make sure to seal the adjust-

ment screw with paint or a specific seal.

fig. 18 - Gas valve

A Upstream pressure po i nt B Downstream pressure point C Modureg electrical connection D Protection cap E Minimum pressure adjustment F Modureg G Minimum pressure adjustment H Compensation tube connection I Gas valve electrical connection L Sealed chamber M Pressure gauge N Compensation tube R Gas outlet S Gas inlet

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) .

Lighting power adjustment

To adjust the lighting power, switch the boiler to TEST mode (see sec. 4.1). Press the DHW buttons (detail 1 - fig. 1) to increase or decrease the power (min. = 00 - max. = 60). Press the reset button within 5 seconds and the lighting 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

cod. 3540S920 - 05/2009 (Rev. 00)

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DOMIcondens F 28

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.).

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 terminal and ducts must be free of obstructions and leaks

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

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

• The gas and water systems must be tight.

• The water pressure in the system when cold must be approx. 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 match 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 necessar y to eliminate the fault indicated by the operation LEDs.

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.

Table of faults

Table. 5 - Fault list

Fault

Fault Possible cause Cure

code

No burner ignition

A01

Flame present signal with burner

A02

off

Overtemperature protection activa-

A03

tion

Air pressure switch (fails to close contacts within 20 sec. of fan activation)

F05

Air pressure switch (fails to close contacts within 20 sec. of fan activation) due to activation of the fume thermostat

A06

No flame after the ignition stage

F10

Delivery sensor 1 fault

F11

DHW sensor fault

F14

Delivery sensor 2 fault

Air pressure switch (fails to close contacts within 20 sec. of fan acti-

A15

vation) Supply voltage under 170V. Electric mains trouble Check the electrical system

F34 F35

Faulty mains frequency Electric mains trouble Check the electrical system

F37

Incorrect system water pressure

A41

Sensor positioning

F42

Heating sensor fault Sensor damaged Replace the sensor

F43

Exchanger protection activation.

F50

Modureg fault Wiring disconnected Check the wiring / Gas valve

Excessive condensate level

No gas

Ignition/detection electrode fault

Faulty gas valve Electrode fault Check the ionisation electrode wiring

Card fault Check the card Heating sensor dam-

aged No water circulation in

the system Air in the system Vent the system Air pressure switch

contact open Incorrect air pressure

switch wiring Wrong baffle Check correct Ø Flue obstructed or not

correctly sized Exchangers dirty

(clogged on water side)

Faulty water circulation Low pressure in the

gas system Burner minimum pres-

sure setting Sensor damaged

Wiring disconnected Sensor damaged

Wiring disconnected Fault

F05

generated 5 times in the last 24 hours

Pressure too low Fill the system Water pressure switch

damaged or not connected

Delivery sensor or DHW sensor detached from the pipe

No system H lation Air in the system Vent the system

Empty / clean the trap Check the regular gas flow to the boiler

and that the air has been eliminated from the pipes

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

Check the gas valve and replace it if necessary

Check the correct positioning and operation of the heating sensor

Check the circulating pump

Check the pressure switch / Fan / Fan socket

Check the wiring

Check the length of the flues / Clean the flues

Clean the exchangers

Check the gas pressure

Check the gas pressures

Check the wiring or replace the sensorWiring shorted

See fault

F05

Check the sensor

Check the correct positioning and operation of the sensors

O circu-

Check the circulating pump

cod. 3540S920 - 05/2009 (Rev. 00)

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DOMIcondens F 28

5. TECHNICAL DATA AND CHARACTERISTICS

126

16 56

278

20 21 22

10 8 9 11

H [m H

0 500 1.000 1.500 2.000

fig. 20 - Circulating pumps Head/Pressure losses Prodotto_25

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

Important: Before connecting the room thermostat or the remote timer con-

trol, remove the jumper on the terminal block.

44 38

fig. 19 - General view

Q [l/h]

277

186

193

114

Data Unit DOMIcondens F 28

Max. heating capacity kW 27.2 (Q) Min. heating capacity kW 10.0 (Q) Max. Heat Output in heating (80/60°C) kW 26.2 (P) Min. Heat Output in heating (80/60°C) kW 9.2 (P) Max. Heat Output in heating (50/30°C) kW 28.2 Min. Heat Output in heating (50/30°C) kW 9.6 Max. heating capacity in hot water production kW 27.2 Min. heating capacity in hot water production kW 10.0 Max. Heat Output in hot water production kW 26.5 Min. Heat Output in hot water production kW 9.2 Gas supply pressure G20 mbar 20 Max. gas delivery G20

Min. gas delivery G20 Gas supply pressure G31 mbar 37 Max. gas delivery G31 kg/h 2.13 Min. gas delivery G31 kg/h 0.78 Efficiency class Directive 92/42 EEC NOx emission class - 3 (NOx) 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 Dt 25°C l/min 15.2 DHW flowrate Dt 30°C l/min 12.7 (D) 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 C13-C23-C33-C43-C53-C63-C83-B23-B33 PIN CE 0063BR3161

Key of figures cap. 5

5 Sealed chamber 7 Gas inlet 8 Domestic hot water outlet 9 Cold water inlet 10 Syst em delivery 11 System return 14 Safety valve 16 Fan 19 Combustion chamber 20 Burner assembly 21 Main nozzle 22 Burner 26 Combustion chamber insulation 27 Copper exchanger f or heating and hot water 32 Heating circulating pump 36 Automatic air vent 38 Flow switch 42 DHW temperatur e sensor 43 Air pressure switch 44 Gas valve 47 Modureg 56 Expansion tank 72 Room thermostat 81 Ignition and detection electrode 114 Water pressure switch 126 Contact fume thermostat 139 Remote timer control 186 Return sensor 193 Trap 277 Condensing recuperator 278 Double sensor (Safety + Heating)

2.88

1.06

cod. 3540S920 - 05/2009 (Rev. 00)

Page 9

Supplied By www.heating spares.co Tel. 0161 620 6677

DOMIcondens F 28

DBM02.1B

193

278

REMOVE TO CONNECT

THE

CLOCK

22:00

11 10 9

2 1

230V 50 Hz

114

T .

DAY

126

139

fig. 21 - Wiring diagram

cod. 3540S920 - 05/2009 (Rev. 00)

Page 10

Supplied By www.heating spares.co Tel. 0161 620 6677

267

BENCHMARK

COLLECTIVE MARK

BENCHMARK No.

Please add the first 4 digits of the Boiler serial No to complete the BENCHMARK No.

GAS BOILER COMMISSIONING CHECKLIST

BOILER SERIAL No. NOTIFICATION No.

CONTROLS To comply with the Building Regulations, each section must have a tick in one or other of the boxes

TIME & TEMPERATURE CONTROL TO HEATING ROOM T/STAT & PROGRAMMER/TIMER PROGRAMMABLE ROOMSTAT

TIME & TEMPERATURE CONTROL TO HOT WATER CYLINDER T/STAT & PROGRAMMER/TIMER

HEATING ZONE VALVES FITTED NOT REQUIRED

HOT WATER ZONE VALVES FITTED NOT REQUIRED

THERMOSTATIC RADIATOR VALVES FITTED

AUTOMATIC BYPASS TO SYSTEM FITTED NOT REQUIRED

COMBI BOILER

FOR ALL BOILERS CONFIRM THE FOLLOWING

THE SYSTEM HAS BEEN FLUSHED IN ACCORDANCE WITH THE BOILER MANUFACTURER’S INSTRUCTIONS?

THE SYSTEM CLEANER USED

THE INHIBITOR USED

FOR THE CENTRAL HEATING MODE, MEASURE & RECORD

GAS RATE ft3/hr

BURNER OPERATING PRESSURE (IF APPLICABLE) mbar

CENTRAL HEATING FLOW TEMPERATURE °C

CENTRAL HEATING RETURN TEMPERATURE °C

m3/hr

N/A

FOR COMBINATION BOILERS ONLY

HAS A WATER SCALE REDUCER BEEN FITTED? YES NO

WHAT TYPE OF SCALE REDUCER HAS BEEN FITTED?

FOR THE DOMESTIC HOT WATER MODE, MEASURE & RECORD

GAS RATE ft3/hr

MAXIMUM BURNER OPERATING PRESSURE (IF APPLICABLE) mbar

COLD WATER INLET TEMPERATURE °C

HOT WATER OUTLET TEMPERATURE °C

WATER FLOW RATE

N/A

/hr

FOR CONDENSING BOILERS ONLY CONFIRM THE FOLLOWING

THE CONDENSATE DRAIN HAS BEEN INSTALLED IN ACCORDANCE WITH THE MANUFACTURER’S INSTRUCTIONS? YES

FOR ALL INSTALLATIONS CONFIRM THE FOLLOWING

lts/min

THE HEATING AND HOT WATER SYSTEM COMPLIES WITH CURRENT BUILDING REGULATIONS

THE APPLIANCE AND ASSOCIATED EQUIPMENT HAS BEEN INSTALLED AND COMMISSIONED IN ACCORDANCE WITH THE MANUFACTURER’S INSTRUCTIONS

IF REQUIRED BY THE MANUFACTURER, HAVE YOU RECORDED A CO/CO2 RATIO READING? N/A YES CO/CO2 RATIO

THE OPERATION OF THE APPLIANCE AND SYSTEM CONTROLS HAVE BEEN DEMONSTRATED TO THE CUSTOMER

THE MANUFACTURER’S LITERATURE HAS BEEN LEFT WITH THE CUSTOMER

COMMISSIONING ENG’S NAME PRINT CORGI ID No.

SIGN DATE

Page 11

Supplied By www.heating spares.co Tel. 0161 620 6677

SERVICE INTERVAL RECORD

It is recommended that your heating system is serviced regularly

and that you complete the appropriate Service Interval Record Below.

Service Provider. Before completing the appropriate Service Interval Record below, please ensure you have carried out the service

as described in the boiler manufacturer’s instructions. Always use the manufacturer’s specified spare part when replacing all controls

SERVICE 1

ENGINEER NAME

COMPANY NAME

TEL No.

CORGI ID CARD SERIAL No.

COMMENTS

SIGNATURE

SERVICE 3

ENGINEER NAME

COMPANY NAME

TEL No.

CORGI ID CARD SERIAL No.

COMMENTS

SIGNATURE

SERVICE 5

ENGINEER NAME

COMPANY NAME

TEL No.

CORGI ID CARD SERIAL No.

COMMENTS

DATE

SERVICE 2

ENGINEER NAME

COMPANY NAME

TEL No.

CORGI ID CARD SERIAL No.

COMMENTS

SIGNATURE

SERVICE 4

ENGINEER NAME

COMPANY NAME

TEL No.

CORGI ID CARD SERIAL No.

COMMENTS

SIGNATURE

SERVICE 6

ENGINEER NAME

COMPANY NAME

TEL No.

CORGI ID CARD SERIAL No.

COMMENTS

DATE

SIGNATURE

SERVICE 7

ENGINEER NAME

COMPANY NAME

TEL No.

CORGI ID CARD SERIAL No.

COMMENTS

SIGNATURE

SERVICE 9

ENGINEER NAME

COMPANY NAME

TEL No.

CORGI ID CARD SERIAL No.

COMMENTS

SIGNATURE

DATE

SIGNATURE

SERVICE 8

ENGINEER NAME

COMPANY NAME

TEL No.

CORGI ID CARD SERIAL No.

COMMENTS

SIGNATURE

SERVICE 10

ENGINEER NAME

COMPANY NAME

TEL No.

CORGI ID CARD SERIAL No.

COMMENTS

SIGNATURE

DATE

FERROLI TECHNICAL HELPLINE - 08707 282 885

Page 12

Supplied By www.heating spares.co Tel. 0161 620 6677

Should you require any assistance during the installation

Should you require a service engineer to visit

Phone numbers:

Installer

Service Engineer

call our Technical Service Helpline on

08707 282 885 option 1

call our service centre on

08707 282 885 option 2

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.

Lichfield Road, Branston Industrial Estate, Burton Upon Trent, Staffordshire DE14 3HD

Tel. 08707 282 885 - Fax 08707 282 886