Baxi Luna 3 Avant, Luna 3 Avant 240 Fi, Luna 3 Avant 310 Fi Instructions For The User And The Installer

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Instructions for the User and the Installer

Felszerelési és használati utasítás

Návod na použití pro uživatele a instalatéry

Plynové závěsné kotle s vysokou účinností

Page 2

Dear Customer, We are sure your new boiler will comply with all your requirements. Purchasing one of the Westen products satisﬁ es your ex pectations: good functioning, simplicity and ease of use. Do not dispose of this booklet without reading it: you can ﬁ nd here some very useful information, which will help you to run your boiler correctly and efﬁ ciently.

Do not leave any parts of the packaging (plastic bags, polystyrene, etc.) within children’s reach as they are a potential source of danger.

Westen boilers bear the CE mark in compliance with the basic requirements as laid down in the following Directives:

- Gas Directive 90/396/CEE

- Performance Directive 92/42/CEE

- Electromagnetic Compatibility Directive 89/336/CEE

- Low Voltage Directive 73/23/CEE

Westen, one of the leading European enterprises to produce central heating and hot water devices for domestic use (wall-mounted gasoperated boilers, ﬂ oor-standing boilers and electrical water-heaters) has obtained the CSQ certiﬁ cate of conformity to the UNI EN ISO 9001 norms. This certiﬁ cate guarantees that the Quality System applied at the Westen factory in Bassano del Grappa, where your boiler was produced, meets the standards of the UNI EN ISO 9001 norm, which is the strictest and concerns all organization stages and operating personnel involved in the production and distribution processes.

CONTENTS

ISTRUCTIONS PERTAINING TO THE USER

1. Instructions prior to installation 3

2. Instructions prior to commissioning 3

3. Commissioning of the boiler 4

4. Central Heating (CH) and Domestic Hot Water (D.H.W.) temperature adjustment 5

5. Filling the boiler 6

6. Turning off the boiler 6

7. Gas change 6

8. Prolonged standstill of the system. frost protection 6

9. Error messages and table of faults 7

10. Servicing instructions 7

ISTRUCTIONS PERTAINING TO THE INSTALLER

11. General information 8

12. Instructions prior to installation 8

13. Boiler installation 9

14. Boiler size 9

15. Installation of ﬂ ue and air ducts 10

16. Connecting the mains supply 14

17. Fitting a room thermostat 15

18. Gas change modalities 15

19. Information display 17

20. Parameters setting 19

21. Control and operation devices 20

22. Positioning of the ignition and ﬂ ame sensing electrode 21

23. Check of combustion parameters 21

24. Output / pump head performances 21

25. Connection of the external probe 22

26. Electrical connections to remote control device 22

27. Electrical connections to a zonal heating system 23

28. How to purge the DHW system from limestone deposits 24

29. How to disassemble the DHW heat exchanger 24

30. Cleaning the cold water ﬁ lter 24

31. Boiler schematic 25

32. Illustrated wiring diagram 26

33. Technical data 27

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INSTRUCTIONS PERTAINING TO THE USER

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1. INSTRUCTIONS PRIOR TO INSTALLATION

This boiler is designed to heat water at a lower than boiling temperature at atmospheric pressure. The boiler must be connected to a central heating system and to a domestic hot water supply system in compliance with its performances and output power. Have the boiler installed by a Qualiﬁ ed Service Engineer and ensure the following operations are accomplished:

a) careful checking that the boiler is ﬁ t for operation with the type of gas available. For more details see the notice on the

packaging and the label on the appliance itself.

b) careful checking that the ﬂ ue terminal draft is appropriate; that the terminal is not obstructed and that no other appliance

exhaust gases are expelled through the same ﬂ ue duct, unless the ﬂ ue is especially designed to collect the exhaust gas coming from more than one appliance, in conformity with the laws and regulations in force.

c) careful checking that, in case the ﬂ ue has been connected to pre-existing ﬂ ue ducts, thorough cleaning has been carried

out in that residual combustion products may come off during operation of the boiler and obstruct the ﬂ ue duct.

d) to ensure correct operation of the appliance and avoid invalidating the guarantee, observe the following precautions:

1. Hot water circuit:

1.1. If the water hardness is greater than 20 °F (1 °F = 10 mg calcium carbonate per litre of water) a polyphosphate or

comparable treatment system responding to current regulations.

1.2. Domestic Hot Water circuit must be thoroughly ﬂ ushed after the installation of the appliance and before its use.

2. Heating circuit

2.1. new system

Before proceeding with installation of the boiler, the system must be cleaned and ﬂ ushed out thoroughly to elimi-

nate residual thread-cutting swarf, solder and solvents if any, using suitable proprietary products. To avoid damaging metal, plastic and rubber parts, use only neutral cleaners, i.e. non-acid and non alkaline. The recommended products for cleaning are: SENTINEL X300 or X400 and FERNOX heating circuit restore. To use this product proceeding strictly in accordance with the maker’s directions.

2.2. existing system

Before proceeding with installation of the boiler, the system must be cleaned and ﬂ ushed out to remove sludge and

contaminants, using suitable proprietary products as described in section 2.1. To avoid damaging metal, plastic and rubber parts, use only neutral cleaners, i.e. non-acid and non-alkaline such as SENTINEL X100 and FERNOX heating circuit protective. To use this product proceeding strictly in accordance with the maker’s directions. Remember that the presence of foreign matter in the heating system can adversely affect the operation of the boiler (e.g. overheating and noisy operation of the heat exchanger).

Failure to observe the above will render the guarantee null and void.

2. INSTRUCTIONS PRIOR TO COMMISSIONING

Initial lighting of the boiler must be carried out by a licensed technician. Ensure the following operations are carried out: a) compliance of boiler parameters with (electricity, water, gas) supply systems settings. b) compliance of installation with the laws and regulations in force. c) appropriate connection to the power supply and grounding of the appliance.

Failure to observe the above will render the guarantee null and void. Prior to commissioning remove the protective plastic coating from the unit. Do not use any tools or abrasive detergents as you may spoil the painted surfaces.

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3. COMMISSIONING OF THE BOILER

To correctly light the boiler proceed as follows:

• Provide power supply to the boiler.

• open the gas cock;

• press the

Note: if summertime mode is setting, the boiler will light only during a D.H.W. demand.

• To adjust the CH and D.H.W. temperature, press the +/- respective buttons as described in section 4.

Warning: During initial lighting, until the air contained in the gas pipes is not released, the burner may fail to light immediately and that may cause a ‘blockage’ of the boiler. Under such circumstances we recommend you to repeat the ignition

procedure until the gas is delivered to the burner, and press

button, for at least two seconds, to set the operating boiler mode (see section 3.2)

button for at least 2 seconds.

DISPLAY LEGEND:

Operating in Central Heating mode (CH)

_90602103

Operating in Domestic Hot Water mode (D.H.W.)

Flame present - power level = 25% (burner switch on)

Boiler power levels (3 power levels)

Generic ERROR

RESET

Water pressure LOW

Numeric signalling (temperature, error codes, etc)

FUNCTION ACTIVATED (see Section 4)

BUTTONS LEGEND

D.H.W. temperature regulation

Central Heating (CH)

RESET

ECO - COMFORT

MODE BUTTON (see section 3.2)

temperature regulation

Figure 1

If the optional remote control device is connected, adjust the boiler using this device. See the instructions accompanying this accessory item.

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3.1 SYMBOL MEANING

There are 4 power levels displayed during boiler operation regarding the gas boiler modulation, as shown in ﬁ gure 2:

Figure 2

3.2 DESCRIPTION OF BUTTON (SUMMER - WINTER - HEATING ONLY - OFF)

10 11_

50 6

Press this button to set the following operating modes:

• SUMMER

• WINTER

• HEATING ONLY

• OFF

In the SUMMER mode, the display shows

. The boiler satisﬁ es requests for domestic hot water only while central heat-

ing is NOT enabled (ambient antifreeze function active).

In the WINTER mode, the display shows and . The boiler satisﬁ es requests for both domestic hot water and central heating (ambient antifreeze function active).

In the HEATING ONLY mode, the display shows

. The boiler satisﬁ es requests for central heating only (ambient anti-

freeze function active).

In the OFF mode, the display shows neither of the above two symbols

. In this mode, only the ambient antifreeze

function is active while requests for domestic hot water and central heating are not satisﬁ ed.

4. CENTRAL HEATING (CH) AND DOMESTIC HOT WATER (D.H.W.) TEMPERATURE ADJUSTMENT

The CH and D.H.W. temperature adjustment are carried out by pressing the relative +/- buttons (ﬁ gure 1). When the burner is lighted the display shows the symbol

CENTRAL HEATING (CH)

The system must be equipped with a room thermostat (see the relevant regulations) to control the temperature in the rooms.

During a CH mode, the display shows a CH blinking symbol and the CH ﬂ ow temperature value (°C).

DOMESTIC HOT WATER (D.H.W.)

During a D.H.W. request, the display shows a D.H.W. blinking symbol and the D.H.W. ﬂ ow temperature value (°C).

There are two different setpoint which can be quickly set: ECO and COMFORT. To adjust the temperature values, proceed as follows:

ECO

The ECO temperature setpoint allows the user to quickly set the relative domestic hot water temperature pressing the P button. In eco function the display reads out “eco”. To set the ECO temperature setpoint press the +/-

buttons.

COMFORT

The COMFORT temperature setpoint allow the user to quickly set the relative domestic hot water temperature pressing the P button. To set the COMFORT temperature setpoint press the +/-

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INSTRUCTIONS PERTAINING TO THE USER

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5. FILLING THE BOILER

IMPORTANT: Regularly check that the pressure displayed by the pressostat (ﬁ gure 3) is 0.7 to 1.5 bar, with boiler not op-

erating. In case of overpressure, open the boiler drain valve. In case the pressure is lower open the boiler ﬁ lling tap. We recommend you open the tap very slowly in order to let off the air. During this operation, the gas boiler must be in “OFF” mode (press the

Filling tap

M anometer

0 3 1 _ 3 0 6 0 2 / C 1 9 7 1 _ G

Figure 3

D rain point

button - See section 3.2).

6. TURNING OFF THE BOILER

The electric supply to the boiler must be removed in order to switch it OFF. With the gas boiler in “OFF” mode (section 3.2), the display reads out “OFF” but the main board is still supplied.

7. GAS CHANGE

These boilers set for natural gas can be converted to work with LPG. Any gas change must be effected by a Qualiﬁ ed Service Engineer.

8. PROLONGED STANDSTILL OF THE SYSTEM. FROST PROTECTION

We recommend you avoid draining the whole system as water replacements engender purposeless and harmful limestone deposits inside the boiler and on the heating elements. In case the boiler is not operated during wintertime and is therefore exposed to danger of frost we suggest you add some speciﬁ c-purpose anti-freeze to the water contained in the system (e.g.: propylene glycole coupled with corrosion and scaling inhibitors). The electronic management of boilers includes a “frost protection” function in the central heating system which operates the burner to reach a heating ﬂ ow temperature of 30° C when the system heating ﬂ ow temperature drops below 5°C.

The frost protection function is enabled if:

* electrical supply to the boiler is on; * the gas service cock is open; * the system pressure is as required; * the boiler is not blocked.

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9. ERROR MESSAGES AND TABLE OF FAULTS

The anomalies are carried out on the display with an error code (e.g. E01). The anomalies which can be reset by the user are shown with the

The anomalies which cannot be reset are carried out with the To RESET the gas boiler, press

Figure 4

ERROR CODE Description of FAULTS CORRECTIVE ACTION

E01

E02

E03

E04

E05

E06

E10

E11

E25

E35

E97

E98

E99

Gas supply fault

Safety thermostat sensor tripped

Flue thermostat sensor tripped / Flue pressure switch tripped

Safety error due to frequent ﬂ ame loss Call an authorised Service centre. Central heating NTC sensor fault Call an authorised Service centre. Domestic Hot Water NTC sensor fault Call an authorised Service centre.

Water pressure LOW

Safety thermostat for low temperature system cuts in (if connected)

Boiler max temperature exceeded (probable pump jammed)

Fault ﬂ ame (parasitic ﬂ ame)

Electronic board input frequency (Hz) incorrectly set

Internal card error Call an authorised Service centre. Internal card error Call an authorised Service centre.

button for at least 2 seconds.

6 0 1 1 _ 5 0 6 0

symbol (e.g. ﬁ gure 4).

symbol (e.g. ﬁ gure 4.1).

Figure 4.1

Press the button (ﬁ gure 1) for at least 2 seconds. If this fault persist, call an authorised Service centre.

Press the fault persist, call an authorised Service centre.

Call an authorised Service centre.

Check that the pressure in the system is as speciﬁ ed. See Section 5. If this fault persist, call an authorised Service centre.

Call an authorised Service centre.

Call an authorized Service centre.

Press the fault persists, call an authorized Service centre

Change the frequency (Hz) setting.

button (ﬁ gure 1) for at least 2 seconds. If this

7 0 1 1 _ 5 0 6 0

Note: when an anomaly occurs, the display background ﬂ ashes with the error code.

10. SERVICING INSTRUCTIONS

To maintain efﬁ cient and safe operation of your boiler have it checked by a Qualiﬁ ed Service Engineer at the end of every operating period. Careful servicing will ensure economical operation of the system. Do not clean the outer casing of the appliance with abrasive, aggressive and/or easily ﬂ ammable cleaners (i.e.: gasoline, alcohol, and so on). Always isolate the electrical supply to the appliance before cleaning it (see section 6).

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INSTRUCTIONS PERTAINING TO THE USER

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11. GENERAL INFORMATION

The following remarks and instructions are addressed to Service Engineers to help them carry out a faultless installation. Instructions regarding lighting and operation of the boiler are contained in the ‘Instructions pertaining to the user’ section. Note that installation, maintenance and operation of the domestic gas appliances must be performed exclusively by qualiﬁ ed personnel in compliance with current standards. Please note the following:

* This boiler can be connected to any type of double- or single feeding pipe convector plates, radiators, thermoconvectors

Design the system sections as usual though taking into account the available output / pump head performances, as shown in section 24. * Do not leave any packaging components (plastic bags, polystyrene, etc.) within children’s reach as they are a potential-

source of danger. * Initial lighting of the boiler must be effected by a Qualiﬁ ed Service Engineer. Failure to observe the above will render the guarantee null and void.potentielle Gefahrenquelle darstellt.

12. INSTRUCTIONS PRIOR TO INSTALLATION

a) careful checking that the boiler is ﬁ t for operation with the type of gas available. For more details see the notice on the

packaging and the label on the appliance itself.

b) careful checking that the ﬂ ue terminal draft is appropriate; that the terminal is not obstructed and that no other ap-

pliance exhaust gases are expelled through the same ﬂ ue duct, unless the ﬂ ue is especially designed to collect the exhaust gas coming from more than one appliance, in conformity with the laws and regulations in force.

c) careful checking that, in case the ﬂ ue has been connected to pre-existing ﬂ ue ducts, thorough cleaning has been car-

ried out in that residual combustion products may come off during operation of the boiler and obstruct the ﬂ ue duct.

To ensure correct operation of the appliance and avoid invalidating the guarantee, observe the following precautions:

1. Hot water circuit:

1.1. If the water hardness is greater than 20 °F (1° F = 10 mg calcium carbonate per litre of water) a polyphosphate or

comparable treatment system responding to current regulations.

1.2. Domestic Hot Water circuit must be thoroughly ﬂ ushed after the installation of the appliance and before its use.

2. Heating circuit

2.1. new system

Before proceeding with installation of the boiler, the system must be cleaned and ﬂ ushed out thoroughly to elimi-

nate residual thread-cutting swarf, solder and solvents if any, using suitable proprietary products.

To avoid damaging metal, plastic and rubber parts, use only neutral cleaners, i.e. non-acid and non alkaline. The

recommended products for cleaning are:

SENTINEL X300 or X400 and FERNOX heating circuit restore. To use this product proceeding strictly in accord-

ance with the maker’s directions.

2.2. existing system

Before proceeding with installation of the boiler, the system must be cleaned and ﬂ ushed out to remove sludge and

contaminants, using suitable proprietary products as described in 2.1.

To avoid damaging metal, plastic and rubber parts, use only neutral cleaners, i.e. non-acid and non-alkaline such

as SENTINEL X100 and FERNOX heating circuit protective. To use this product proceeding strictly in accordancewith the maker’s directions.

Remember that the presence of foreign matter in the heating system can adversely affect the operation of the

boiler (e.g. overheating and noisy operation of the heat exchanger).

Failure to observe the above will render the guarantee null and void.

IMPORTANT: when connecting an instantaneous boiler (mixed) to a system with solar panels, the maximum temperature of the DHW at the boiler inlet must not be greater than:

• 60°C with a ﬂ ow limiting device

• 70°C without a ﬂ ow limiting device

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13. BOILER INSTALLATION

Decide upon the boiler location, then tape the template on the wall. Connect the pipework to the gas and water inlets prea ranged on the template lower bar. We suggest you ﬁ t two G3/4 stop cocks (available on demand) on the central heating system ﬂ ow and return pipework; the cocks will allow to carry out important operations on the system without draining it completely. If you are either installing the boiler on a pre-existent system or substituting it, we suggest you also ﬁ t settling tank on the system return pipework and under the boiler to collect the deposits and scaling which may remain and be circulated in the system after the purge. When the boiler is ﬁ xed on the template connect the ﬂ ue and air ducts (ﬁ ttings supplied by the manufacturer) according to the instructions given in the following sections.

Figure 5

= BOILER WIDTH 450 =

1502 /4050_C9671G

BOILER CONNECTION POINTS

240 Fi - 240 i - 310 Fi

: G3/4 heating flow / return

: G1/2 domestic hot water inlet / outlet

087

TH GI

E H

RELIOB

: G3/4 gas inlet to the boiler

0512_0505/CG1769

14. BOILER SIZE

Figure 6

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240 Fi - 310 Fi - 1.240 Fi - 1.310 Fi

omi n

_ 6 0

6 0 2 2

3 06

2 _ 6 06

INSTRUCTIONS PERTAINING TO THE INSTALLER

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15. INSTALLATION OF FLUE AND AIR DUCTS

Models 240 Fi - 310 Fi - 1.240 Fi - 1.310 Fi

We guarantee ease and ﬂ exibility of installation for a gasﬁ red forced draught boiler thanks to the ﬁ ttings and ﬁ xtures supplied (described below). The boiler is especially designed for connection to an exhaust ﬂ ue / air ducting, with either coaxial, vertical or horizontal terminal. By means of a splitting kit a two-pipe system may also be installed.

Exclusively install ﬁ ttings supplied by the manufacturer.

CAUTION: To enhance operating safety, make sure the ﬂ ue ducts are ﬁ rmly ﬁ xed to the wall with suitable brackets.

Figure 7

COAXIAL FLUE - AIR DUCT (CONCENTRIC)

This type of duct allows to disengage exhaust gases and to draw combustion air both outside the building and in case a LAS ﬂ ue is ﬁ tted. The 90° coaxial bend allows to connect the boiler to a ﬂ ue-air duct in any direction as it can rotate by 360°. It can more ver be used as a supplementary bend and be coupled with a coaxial duct or a 45° bend.

/5090_3050C8361G

Figure 8

If the ﬂ ue outlet is placed outside, the ﬂ ue-air ducting must protrude at least 18mm out of the wall to allow alluminium

CG_0886

weathering tile to be ﬁ tted and sealed to avoid water leakages. Ensure a minimum upward slope of 1 cm towards the outside per each metre of duct length.

• A 90° bend reduces the total duct length by 1 metre.

• A 45° bend reduces the total duct length by 0.5 metre.

• The ﬁ rst 90° bend is not included in the maximum avail able length.

15.1 HORIZONTAL FLUE TERMINAL INSTALLATION OPTIONS

L max = 4 m 240 Fi

L max = 4 m

L max = 3 m 310 Fi

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L max = 3 m 240 Fi

L max = 3 m

L max = 2 m 310 Fi

_2 100 2 150

INSTRUCTIONS PERTAINING TO THE INSTALLER

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15.2 LAS FLUE DUCT INSTALLATION OPTIONS

1 5 0 2 _ 2 0 0 2

L max = 4 m 240 Fi

L max = 4 m

L max = 3 m 310 Fi

15.3 VERTICAL FLUE TERMINAL INSTALLATION OPTIONS

This type of installation can be carried out both on a ﬂ at or pitched roof by ﬁ tting a terminal, an appropriate weathering tile and sleeve, (supplementary ﬁ ttings supplied on demand).

1 4 6

1 G C

/ 8 0

9 0 _

3 0 5 0

L max = 4 m L max = 2 m L max = 3 m

For detailed instructions concerning the installation of ﬁ ttings refer to the technical data accompanying the ﬁ ttings.

SEPARATED FLUE-AIR DUCTING

This type of ducting allows to disengage exhaust ﬂ ue gases both outside the building and into single ﬂ ue ducts. Comburant air may be drawn in at a different site from where the ﬂ ue terminal is located. The splitting kit consists of a ﬂ ue duct adaptor (100/80) and of an air duct adaptor. For the air duct adaptor ﬁ t the screws and seals previously removed from the cap.

The ﬂ ue duct must not fall and all horizontal runs must always rise at approximately 3° from the boiler. Consideration for protection to exposed parts of the outlet duct where accidental touch may occur must be given.

Calculation of the total equivalent length:

The total equivalent length depends on the number and type of components in the ﬂ ue system.

The total equivalent length is the addition of Air Duct Value + Flue Duct Value, plus the equivalent length of any bends. The bend equivalences are:

45° = 0.25m 90° = 0.50m

ASSEMBLING THE FLUE SYSTEM

The pipe extensions can be cut to length if necessary. The cut end should be de-burred to prevent damage to seals when assembling to a ﬁ tting. Apply soap solution to all seals to aid assembly. Always use 80mm pipe clamps to secure/support the ducts. Secure the roof terminal with the pipe clamp supplied.

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IMPORTANT: If the ﬂ ue system is to be ﬁ tted prior to the boiler, temporary precautions must be taken to prevent rain entry into the room of installation. Any precautionary measures must be removed prior to ﬁ tting the boiler.

Flue Duct Adaptor

Engage the ﬂ ue duct adaptor on the boiler adaptor, making sure that it is pushed down as far as possible.

Air Duct Adaptor

Undo the screws securing the blanking plate to the boiler top panel. Discard the plate. There is a restrictor plate supplied in the kit with the gas boiler. This restrictor is used either way up depending upon model of boiler - see ﬁ gure 9.

IMPORTANT: The restrictor MUST be positioned as shown in the diagrams below.

Take one of the gaskets supplied in the kit and place on the boiler top panel. Align the appropriate restrictor as shown. Position the second gasket over the restrictor. Using the screws previously removed secure the air duct adaptor to the top panel. Continue to ﬁ t the twin ﬂ ue system.

Position of Restrictor model 240 Fi Position of Restrictor model 310 Fi

Figure 9a

Blanking Plate

Flue Duct

Adaptor

Figure 9b

Air Duct Adaptor

Gasket

Restrictor

Gasket

BoilerAdaptor

Figure 9b

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15.4 SPLIT FLUE OVERALL DIMENSIONS

0504_1806/CG_1794

15.5 SEPARATED HORIZONTAL FLUE TERMINALS INSTALLATION OPTIONS

IMPORTANT: Ensure a minimum downward slope of 1 cm toward the outside per each metre of duct length. In the event of installation of the condensate collection kit, the angle of the drain duct must be directed towards the boiler.

3 4 6 1 G

_ 3 0 5 0 2 2 / 1 0 C

L max = 10 m 240 Fi

L max = 8 m 310 Fi

L max = 10 m

(L1 + L2) max = 30 m 240 Fi

(L1 + L2) max = 30 m

(L1 + L2) max = 25 m 240 Fi

NB: For C52 types, terminals for combustion air suction and combustion product extraction must never be ﬁ tted on opposite walls of the building. The maximum length of the suction duct must be 10 metres.

If the ﬂ ue duct exceeds 6 m, the condensate collection kit (supplied as an accessory) must be ﬁ tted close to the boiler.

15.6 SEPARATED VERTICAL FLUE TERMINALS INSTALLATION OPTIONS

4 4 6

1 G C

/ 1 1 9 0 _ 3 0 5 0

L max = 10 m

L max = 10 m L max = 10 m

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Important: if ﬁ tting a single exhaust ﬂ ue duct, ensure it is adequately insulated (e.g.: with glass wool) wherever the duct

passes through building walls. For detailed instructions concerning the installation of ﬁ ttings refer to the technical data accompanying the ﬁ ttings.

16. CONNECTING THE MAINS SUPPLY

Electrical safety of the appliance is only guaranteed by correct grounding, in compliance with the applicable laws and regulations. Connect the boiler to a 230V monophase + ground power supply by means of the three-pin cable supplied with it and make sure you connect polarities correctly.

Use a double-pole switch with a contact separation of at least 3mm in both poles.

In case you replace the power supply cable ﬁ t a HAR H05 VV-F’ 3x0.75mm

…Access to the power supply terminal block

• isolate the electrical supply to the boiler by the double-pole switch;

• unscrew the two screws securing the control board to the boiler;

• rotate the control board;

• unscrew the lid and gain access to the wiring (Figure 10).

The 2A fast-blowing fuses are incorporated in the power supply terminal block (to check or replace the fuse, pull out the black fuse carrier).

IMPORTANT : be sure to connect polarities correctly L (LIVE) - N (NEUTRAL).

(L) = Live (brown) (N) = Neutral (blue) (

) = Ground (yellow/green)

(1) (2) = Room thermostat terminal

cable with an 8mm diameter max.

077

1 G C

0 50_

1502 /8

Figure 10

CAUTION: If the appliance is directly connected to a underﬂ oor system, the ﬁ tter must install a safety thermostat to prevent it from overheating.

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17. FITTING A ROOM THERMOSTAT

To connect the room thermostat to the boiler terminal block, proceed as follows:

• reach the power supply terminal block (ﬁ gure 10);

• connect the room thermostat to the terminals (1) - (2) and remove the jumper.

18. GAS CHANGE MODALITIES

A Qualiﬁ ed Service Engineer may adapt this boiler to operate with natural gas (G. 20) or with liquid gas (G. 31). The procedure for calibrating the pressure regulator may vary according to the type of gas valve ﬁ tted (honeywell or SIT; see ﬁ gure 11).

Carry out the following operations in the given sequence:

Honeywell valve

A) Substitute the main burner injectors

• carefully pull the main burner off its seat;

• substitute the main burner injectors and make sure you tighten them to avoid leakage. The nozzle diameters are speciﬁ ed in table 1.

B) Change the modulator voltage

• setting F02 parameter according to the gas used as described in section 20.

mod. VK 4105 M

C) Pressure adjusting device setting

• connect the positive pressure test point of a differential (possibly water-operated) manometer to the gas valve pressure test point (Pb) (Figure 11); connect, for sealed chamber models only, the negative pressure test point of the manometer to a “T” ﬁ tting in order to join the boiler adjusting outlet, the gas valve adjusting outlet (Pc) and the manometer. (The same measurement can be carried out by connecting the manometer to the pressure test point (Pb) after removing the sealed chamber front panel); If you measure the pressure of burners in a different way you may obtain an altered result in that the low pressure created in the sealed chamber by the fan would not be taken into account.

C1) Adjustment to nominal heat output

• open the gas tap;

• press (section 3.2);

• open a hot water tap to reach a minimum 10 l/min ﬂ ow rate or ensure that maximum heating requirements are set;

• remove the modulator cover;

• adjust the tube brass screw (a) Fig. 12 to obtain the presure settings shown in table 1;

• check that boiler feeding dynamic pressure, as measured at the inlet gas valve pressure test point (Pa) (Figure 11) is correct (37 mbar for propane gas G.31, 20 mbar for natural gas G20);

button (ﬁ gure 1) and set the boiler in winter mode

02 6040_

SIT valve mod. SIGMA 845

1 992220051

BAXI - 925.200.1

925.492.2

Figure 11

INSTRUCTIONS PERTAINING TO THE INSTALLER

Page 16

C2) Adjustment to reduced heat output

• disconnect the modulator feeding cable and unscrew the (b) Fig. 12 screw to reach the pressure setting corresponding to reduced heat output (see table 1);

• connect the cable again;

• ﬁ t the modulator cover and seal.

C3) Final checks

• apply the additional dataplate, specifying the type of gas and settings applied.

Honeywell gas valve Sit gas valve

107

1_ 5060

Figure 12

05 1_ 50 6

Table of burner pressures - heat output - burner injectors

240 Fi 310 Fi

Gas used G20 G31 G20 G31

Burner pressure (mbar*)

MINIMUM HEAT OUTPUT

Burner pressure (mbar*)

MAXIMUM HEAT OUTPUT

2,0 4,4 12,1 32,3

10,2 21,8 2,1 5,2

Injector diameter (mm) 1,18 0,77 1,25 0,77 no. of injectors 15

Table 1

Consumption table

Consumption 15 °C - 1013 mbar

Maximum heat output

Minimum heat output

p.c.i.

2,62 m 1,12 m3/h 0,92 Kg/h 1,26 m3/h 0,48 Kg/h

34,02 MJ/m

240 Fi 310 Fi

G20 G31 G20 G31

/h 1,92 Kg/h 3,22 m3/h 2,37 Kg/h

46,30 MJ/Kg 34,02 MJ/m346,30 MJ/Kg

Table 2

BAXI - 925.200.1

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INSTRUCTIONS PERTAINING TO THE INSTALLER

Page 17

19. INFORMATION DISPLAY

19.1 FIRST DISPLAYED INFORMATION

To correct light the boiler, proceed as follows:

• Provide power supply to the boiler.

When the gas boiler is power supplì, the display shows the following information:

1. all symbols alight;

2. manufacture information;

3. manufacture information;

4. manufacture information;

5. Type of boiler and gas used (eg. )

The displayed letters mean the following:

= natural boiler chamber = natural gas METANE

6. Hydraulic system;

7. Software version (two numbers x.x);

• open the gas cock;

• press the

button, for at least two seconds, to set the operating boiler mode (see section 3.2).

= sealed boiler chamber

= LPG gas

19.2 OPERATION INFORMATION

To display some useful information during the boiler operation proceed as follows:

• Press the (

value (e.g. ﬁ gure 13);

) button for at least 6 seconds until the display shows “A00” (…“A07”) alternating with the respective

_0 16 026

Figure 13

BAXI - 925.200.1

925.492.2

INSTRUCTIONS PERTAINING TO THE INSTALLER

Page 18

• Press the +/- domestic hot water buttons to display the following instantaneous information:

A00: domestic hot water temperature value (°C); A01: outside temperature (with external probe sensor connected); A02: modulatine current value (100% = 230 mA METANE - 100% = 310 mA GPL); A03: power range level value (%) - see parameter F13 (section 20); A04: temperature setpoint value (°C); A05: central heating ﬂ ow temperature value (°C); A06: ﬂ ow water value (l/min x 10); A07: ﬂ ame signal value (8-100%).

Note: lines A08 and A09 are not used.

• This function is active for 3 minutes. To exit the function, press

button as described in section 3.2.

19.3 ANOMALIES DISPLAY

Note: the resetting operation is available only for 5 consecutive attempts, after which the RESET function is disabled and the gas boiler remains blocked. To carry out a new RESET attempt, proceed as follows:

• press the

• reset the boiler pressing the

• press the

button for at least 2 seconds;

button for at least 2 seconds, the display shows “OFF”;.

button for at least 2 seconds as describe in section 3.2.

See section 9 for error codes and anomalies description.

19.4 ADDITIONAL INFORMATION

For more detailed technical information, please consult the “SERVICE INSTRUCTIONS”.

BAXI - 925.200.1

925.492.2

INSTRUCTIONS PERTAINING TO THE INSTALLER

Page 19

20. PARAMETERS SETTING

To set the boiler parameters press the R and - buttons together for at least 6 seconds. When the function is activated, the display shows “F01” alternated with the value of the parameter.

Parameters setting

• Press +/-

buttons for scrolling parameters;

• Press +/- buttons to change the single parameter value;

• Press the P button to save changes, the display shows “MEM”;

• Press the

button to leave the function without saving, the

display shows “ESC”;

Description of parameter Default value

F01

F02

F03

F04

F05

F06

F07...F12

F13

F14

F15

F16

F17

F18

F19

F20

F21...F22

F23

F24

F25

F26...F29

F30

F31

F34...F41

Final parameter

Type of gas boiler

10 = sealed chamber

Type of gas

00 = natural (metane) - 01 = LPG

Hydraulic system

00 = instantaneous appliance

Programmable relay 1 setting

2 = zone system

Programmable relay 2 setting

13 = “cool” function for external air-conditioning

system (See SERVICE Instructions)

External sensor programmable input setting

(See SERVICE Instructions)

Manufacturer information 00

CH max. heating output (0-100%) 100

D.H.W. max. heating output (0-100%) 100

CH min. heating output (0-100%) 00

Maximum temperature setpoint setting 00 = 85°C - 01 = 45°C

Pump overrun time

(01-240 minutes)

Minimum burner pause in central heating mode - 00=10 seconds

Manufacturer information 07

Manufacturer information --

Manufacturer information 00

Maximum D.H.W. setpoint 60

Manufacturer information 35

Lack of water safety device 00

Manufacturer information (read-only parameters) --

Manufacturer information 10

Manufacturer information 30

Diagnostics (See SERVICE Instructions) --

Calibration function activation (See SERVICE Instructions)

(See SERVICE Instructions)

O 01

706

2 _ 01

6 0

WARNING: do not modify the values of the “Manufacturer information” parameters.

BAXI - 925.200.1

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INSTRUCTIONS PERTAINING TO THE INSTALLER

Page 20

21. CONTROL AND OPERATION DEVICES

The boiler has been designed in full compliance with European reference standards and in particular is equipped with the following:

• Air pressure switch for forced draught model (240Fi - 310 Fi)

This switch allows the burner to switch on provided the exhaust ﬂ ue duct efﬁ ciency is perfect. In the event of one of the following faults:

• the ﬂ ue terminal is obstructed;

• the venturi is obstructed;

• the fan is blocked;

• the connection between the venturi and the air pressure switch is interrupted;

The boiler will stay on stand-by and the display shows error code E03 (see section 9).

• Overheat safety thermostat

Thanks to a sensor placed on the heating ﬂ ow, this thermostat interrupts the gas ﬂ ow to the burner in case the water contained in the

primary circuit has overheated. Under such conditions the boiler is blocked and relighting will only be possible after the cause of the anomaly has been removed.

It is forbidden to disenable this safety device

• Flame ionization detector

The ﬂ ame sensing electrode, placed on the right of the burner, guarantees safety of operation in case of gas failure or incomplete inter-

lighting of the burner. The boiler is blocked after 3 relight attempt.

See section 9 to RESET normal operating conditions.

• Hydraulic pressure sensor

This device (3 - ﬁ gure 20) enables the main burner only to be switched on if the system pressure is over 0.5 bars.

• Pump overrun for central heating circuit

The electronically-controlled supplementary running of the pump lasts 3 minutes (F17 - Section 20), when the boiler is in the central

heating mode, after the burner has switched off due to a room thermostat or intervention.

• Pump overrun for domestic hot water circuit

The electronic control system keeps the pump operating for 30 seconds in domestic hot water mode after the D.H.W. sensor has

switched off the burner.

• Frost protection device (central heating and domestic hot water systems)

Boilers electronic management includes a “frost protection” function in the central heating system which operates the burner to reach

a heating ﬂ ow temperature of 30°C when the system heating ﬂ ow temperature drops below 5 °C.

This function is enabled when the boiler is connected to electrical supply, the gas supply is on and the system pressure is as required.

• Lack of water circulation (probable pump jammed)

If the water inside the primary circuit doesn’t circulate, the display shows E25 error (see section 9).

• Anti-block pump function

In the event that no heat is required, the pump will automatically start up and operate for one minute during the following 24 hours. This

function is operative when the boiler is powered.

• Three-way anti-blockage valve

In the case of no heat is request for a period of 24 hours the three way valve carries out a complete commutation. This function is operative when the boiler is powered.

• Hydraulic safety valve (heating circuit)

This device is set to 3 bar and is used for the heating circuit.

The safety valve should be connected to a siphoned drain. Use as a means of draining the heating circuit is strictly prohibited.

Note: domestic hot water is guaranteed even if the NTC sensor (5 - ﬁ gure 20) is damaged. In this case, the temperature control is carried out by the boiler ﬂ ow temperature.

BAXI - 925.200.1

925.492.2

INSTRUCTIONS PERTAINING TO THE INSTALLER

Page 21

22. POSITIONING OF THE IGNITION AND FLAME SENSING ELECTRODE

7 0

1 9 9 2 0 0 1 0

Figure 14

23. CHECK OF COMBUSTION PARAMETERS

The boiler has two connection points speciﬁ cally designed to allow technicians to measure the combustion efﬁ ciency after installation and ensure that the combustion products do not constitute a health risk. One connection point is connected to the ﬂ ue gas discharge circuit, and allows monitoring of the quality of the combustion products and the combustion efﬁ ciency. The other is connected to the combustion air intake circuit, allowing checking of any recycling of the combustion products in case of coaxial pipelines. The following parameters can be measured at the connection point on the ﬂ ue gas circuit:

• temperature of the combustion products;

• oxygen (O

• carbon monoxide (CO) concentration. The combustion air temperature must be measured at the connection point on the air intake circuit, inserting the measur ement probe to a depth of about 3 cm. For natural draught boiler models, a hole must be made in the ﬂ ue gas discharge pipe at a distance from the boiler equal to twice the inside diameter of the pipe itself. The following parameters can be measured through this hole:

• temperature of the combustion products;

• oxygen (O

• carbon monoxide (CO) concentration. The combustion air temperature must be measured close to the point where the air enters the boiler. The hole, which must be made by the person in charge of operating the system when it is commissioned, must be sealed in a way which ensures that the combustion product discharge pipe is airtight during normal operation.

) or carbon dioxide (CO2) concentration;

24. OUTPUT / PUMP HEAD PERFORMANCES

This is a high static head pump ﬁ t for installation on any type of single or double-pipe heating systems. The air vent valve incorporated in the pump allows quick venting of the heating system.

BAXI - 925.200.1

925.492.2

INSTRUCTIONS PERTAINING TO THE INSTALLER

Page 22

25. CONNECTION OF THE EXTERNAL PROBE

The boiler is prearranged for connection of an external probe (supplied as accessory). For the connection, refer to the ﬁ gure below and the instructions supplied with the probe.

Figure 15

Kt curves

CN 5

When the external probe is connected, the heating circuit temperature control device regulates the dispersal coefﬁ cient Kt. To set the curves (0…90) press the +/-

but-

tons.

NOTE: the maximum value of the ﬂ ow temperature TM depends on the F16 parameter setting (see sec-

tion 20). The maximum ﬂ ow temperature it may 85° or 45°C.

5 0 3 0 _

3 0 6

6 0 3 0 _

3 0 6

Graph 2

26. ELECTRICAL CONNECTIONS TO REMOTE CONTROL DEVICE

(SUPPLIED AS AN ACCESSORY)

The remote control device is not a standard boiler component as it is su pplied as an accessory. Open the electronic board and connect the cable (supplied together with the two-pin terminal board) to connector CN7 on the electronic boiler board. Connect the terminals of the remote control device to the two-pin terminal board (ﬁ gure

16).

Graph 3

TM = flow temperature (°C) T e = e x ternal temperature (°C)

CN 7

0610_1302 / CG_1856

BAXI - 925.200.1

925.492.2

Figure. 16

INSTRUCTIONS PERTAINING TO THE INSTALLER

Page 23

27. ELECTRICAL CONNECTIONS TO A ZONAL HEATING SYSTEM

27.1 CONNECTING THE RELAY BOARD

The relay board is not a standard boiler component as it is supplied as an accessory. Connect terminals 1-2-3 (common

- normally closed - normally open) of connector Cn1 on the relay board to the respective terminals 10-9-8 on the boiler terminal board M2 (ﬁ gure 17).

BOILER BOARD

0610_0401 / CG_1840

RELAY BOARD ACCESSORY

RELAY 2

RELAY 1

Figure 17

27.2 CONNECTING THE ZONES

Connect the contact relative to heating requests in zones that are not controlled by the remote control device in parallel to terminals 1-2 “TA” on terminal board M1. Remove the jumper. The zone controlled by the remote control device is managed by the zone 1 solenoid, as illustrated in ﬁ gure 18.

ZONE 1

N.O.

N.C.

ZONE 1 REMOTE CONTROL

SOLENOID

Elettrovalvola

ZONE 1

Zona 1

ZONE 2 (AMBIENT THERMOSTAT)

T.A.

E.V.2

RE2

ZONE 3 (AMBIENT THERMOSTAT)

T.A.

E.V.3

RE3

ZONE N (AMBIENT THERMOSTAT)

T.A.

E.V.n

REn

2801 / CG_182

0607_

BAXI - 925.200.1

925.492.2

Figure 18

INSTRUCTIONS PERTAINING TO THE INSTALLER

Page 24

28. HOW TO PURGE THE DHW SYSTEM FROM LIMESTONE DEPOSITS

To clean the DHW system it is not necessary to remove the DHW heat exchanger if the assembly is equipped with the appropriate taps (supplied on demand) placed on the hot water outlet and inlet.

To carry out the purge it is necessary to:

• close the cold water inlet

• drain the DHW system from the water contained therein by means of a hot water tap

• close the DHW outlet

• unscrew the two stop cocks caps

• remove the ﬁ lters. In case the appropriate tap is not supplied it is necessary to disassemble the DHW heat exchanger, as described in the

following section, and do the purge aside. We recommend you also purge from limestone deposits the DHW heat exchanger seat and the NTC sensor ﬁ tted on the DHW system. To purge the exchanger and/or the DHW system we suggest the use of Cillit FFW-AL or Beckinser HF-AL.

29. HOW TO DISASSEMBLE THE DHW HEAT EXCHANGER

The stainless steel plate-type DHW heat exchanger is easily disassembled with a screwdriver by operating as described below:

• drain, if possible, only the boiler system, through the drain tap;

• drain the DHW system from water;

• remove the two screws (right in front of you) securing the DHW heat exchanger and pull it off its seat (ﬁ gure 23).

30. CLEANING THE COLD WATER FILTER

The boiler is equipped with a cold water ﬁ lter placed on the hydraulic assembly. To clean it do the following:

• drain the DHW system from water;

• unscrew the nut on the ﬂ ow sensing assembly (Figure 19);

• pull out the ﬂ ow sensing device and its ﬁ lter;

• remove the impurities. Important: in the event of replacements and/or cleaning of the O-rings on the hydraulic unit, do not use oil or grease as

lubricant but exclusively Molykote 111.

0605_3001 / CG_1825

Figure 19

BAXI - 925.200.1

925.492.2

flow sensing securing nut

DHW heat exchanger securing screws

INSTRUCTIONS PERTAINING TO THE INSTALLER

Page 25

31. BOILER SCHEMATIC

240 FI 310 FI

SEALED CHAMBER

0605_3002 / CG1826

heating

inlet

domestic

water outlet

Gas

domestic

water inlet

heating

return

Condensate

drain

SEALED CHAMBER

heating

inlet

domestic

water outlet

Gas

domestic

water inlet

heating

return

Condensate

drain

Key:

1 D.H.W. NTC priority sensor 2 Automatic by-pass 3 Water pressure switch 4 Three way valve 5 D.H.W. NTC sensor 6 Flow sensor with ﬁ lter and water ﬂ ow rate limiter 7 Three way valve motor 8 Gas valve

9 Expansion vessel 10 Ignition electrode 11 Central heating NTC sensor 12 Overheat safety thermostat 13 Flue-water exchanger 14 Flue hood 15 Fan 16 Positive pressure point

Figure 20

17 Air pressure switch 18 Fue thermostat 19 Fue adaptor 20 Secondary heat exchanger 21 Flame sensing electrode 22 Burner 23 D.H.W. plate heat exchanger 24 Automatic air vent 25 Pump and air separator 26 System ﬁ lling cock 27 Boiler drain point 28 Pressure manometer 29 Pressure relief valve 30 Siphon 31 Cold water inlet on/off valve and ﬁ lter 32 Gas service cock

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INSTRUCTIONS PERTAINING TO THE INSTALLER

Page 26

CG_1741

32. ILLUSTRATED WIRING DIAGRAM

N E S

W H

IROIRPY ROS

A NRET

E B O

WA RETERUSSERPHCTIWS

GND

WOLF

ERUSSERPHCTIWS

RTNECAL

EHA GNITCTNROSNES

CN7

COM

CN11

6 543

COM

Vcc

CN2

SB7

SB6

SB5

SB4

WHDCTN

SB1

RP ROSNES

ROSNES

INOROFEX L T

(EESESCTI NO)52

ENNOC

CN5

CN6

ACB C SELOLRUOS

C=eulb thgil

M=nworb

/GV=neerg/wolley

=kc

=R der

=B etihw

=neerg

EDORTCELE

SB3

AT SO

TEFY

REH

TMT

G/V

E D

OI TI

NGI

C ELE

N E S

LFMAE GNIS

TF1

CN12

CN3

E V LAV SAG

G/V

SB2

456

CN1

CN10

PMUP

G/V

BAXI - 925.200.1

925.492.2

G/V

EVL A

N A

AV W

G/V

EW O

DIR

GNI

D EEFR

O O

E HTMTS

INSTRUCTIONS PERTAINING TO THE INSTALLER

Page 27

33. TECHNICAL DATA

Boiler model

Baxi Luna 3 Avant, Luna 3 Avant 240 Fi, Luna 3 Avant 310 Fi Instructions For The User And The Installer

Specifications and Main Features

Frequently Asked Questions

User Manual