chaffotteaux Centora Green System 24 Nat User guide

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CONDENSING WALL HUNG BOILER

Central Heating - Fanned Flue system

Installation and Operating

Instructions

Centora green system 24 Centora green system 30

Manufactures N° Model Type Gas Council N°

200905821037.31 Centora Green System 24 Nat 41 - 980 - 12

200906822037.31 Centora Green System 30 Nat 41 - 980 - 31

hese instructions are suitable for the CENTORA GREEN System boilers :

o not forget the Log Book!

haffoteaux & Maury supports Benchmark, the heating industry code to ensure the correct installation, commissioning and

ervicing of domestic central heating systems.

o The Householder

T Make sure you have a completed Log Book for your boiler.

It contains important information about your particular installation that may be required by service engineers. The Log Book will

lso provide contact details for the installer should you need guidance in the use of this appliance or if there are any problems.

a As with your car, your boiler will work more reliably and efficiently if regularly serviced. We recommend an annual service

heck. The service history of the appliance will be recorded on the Log Book.

n the unlikely event of any problems with your boiler or system you should first contact your installer. If your installer cannot

esolve the problem he should telephone our national service helpline.

his appliance is a combined appliance for the production of Central Heating (C.H.) and Domestic Hot Water D.H.W.)

T This appliance

improper or negligent use.

charge may be made if Chaffoteaux & Maury Service is called out to resolve a non-product related fault.

A Your statutory rights are not affected. Do not allow children or inexperienced persons to use the appliance without supervision. If you smell gas in the room,

sparks. Open doors and windows to ventilate the room. Shut the gas mains tap (on the gas meter) or the valve of the gas cylinder and call your Gas Supplier immediately. If you are going away for a long period of time, remember to shut the mains gas tap or the gas cylinder valve.

must only be used for the purpose for which it is designed. THe manufacturer declines all responsibility for

do not turn on or off light swithces, use the telephone or any other objects that might cause

This provides a record of the commissioning of your boiler.

Before any intervention within the boiler it is first necessary to isolate the electrical power supply by turning the external switch to “OFF”

TO CONTACT C&M SERVICE, PLEASE CALL THE NATIONAL WARRANTY HELPLINE ON:

0870 600 9888

To The Installer

As part of the commissioning of this appliance it is vital that the Log Book is completed and given to the Householder. Please ensure that your customer is aware of the importance of keeping the Log Book safe as a record of the installation and the appliance service history.

Please ensure that your customer is aware of the correct operation of the system, boiler and controls.

CUSTOMER CARE

The MTS Group, as a leading manufacturer of domestic and commercial water heating appliances is committed to providing high quality products and a high quality after sales service. If it is necessary to contact an engineer, then telephone the national warranty helpline 0870 600 9888.

Advice on installation or servicing can also be obtained by contacting the Technical

Tel: 0870 241 8180 Fax: 01494 459775

Department on:

GUARANTEE The manufacturer’s guarantee is for 12 months from the date of purchase. The guarantee is invalidated if the appliance is not

installed in accordance with the recommendations made herein or in a manner not approved by the manufacturer. To assist us in providing you with an efficient after sales service, please return the guarantee registration card enclosed with the boiler without delay.

TATUTORY REQUIREMENTS

S The installation of this appliance must be carried out by a CORGI Registered person or other competent person and in

accordance with the requirements of the Gas Safety (Installation and Use) Regulations and the rules in force. In GB it is necessary to comply with the Water Supply (Water Fittings) Regulation 1999, for Scotland, The Water Bylaws 2000,

cotland. The Centora Green is an approved product under the Water Regulations.

o comply with the Water Regulations, your attention is drawn to The Water Regulations guide published by the the Water

egulations Advisory Scheme (WRAS) gives full details of the requirements. In IE the requirements given under the current

R edition of I.S.813 must be followed. installation must also comply with the current bylaws of Local Water Undertakings.

nstallation should also be carried out in accordance with Building Regulations, Local Authority Building Standards (Scotland)

I Regulations and current editions of the following British Standards Codes of practice: BS 7593, BS 5440 parts 1 and 2, BS 5449, BS 7593, BS 6798, BS 5546, BS 7074, BS 7671 and document IGE/UP/7.

In the Republic the Republic of Ireland the installation should be carried out in accordance with the following codes of practice: I.S.813 Domestic Gas Installation, the following BS Standards give valuable information: BS 5546, BS 5449, BS 7074 and BS

7593. The electrical connections must be made in accordance for GB with current I.EE. Wiring Regulations, in Scotland with the

electrical provisions of the Building Regulations applicable in Scotland, the Safety Document 635 The Electricity at Work Regulation and in the Republic of Ireland in accordance with I.S.813 and the current ETCI rules.

The Centora Green does not contain any asbestos or asbestos products, or mercury derivatives. Additional CFC’s have not been used in this product.

The appliance does not contain any potential hazard in relation to the COSHH regulations. If there is a possibility of the incoming mains water pressure exceeding 10 bar then a suitable pressure limiting valve must be

fitted where pressures exceed 6 bars a pressure limiting valve is preferred. Precautions: During servicing, keep the dust generation to a minimum and avoid inhaling any dust and contact with the skin

and eyes. Normal handling and use will not present any discomfort, although some people with a history of skin complaints may be susceptible to irritation. When disposing of the ceramic lining, ensure that it is securely wrapped and wash hands after

contact.

Contents

CUSTOMER CARE

Guarantee ............................................................................................................................................................2

Statutory Requirements .......................................................................................................................................2

Contents ...............................................................................................................................................................3

INTRODUCTION ..................................................................................................................................................4

INSTALLER’S INSTRUCTION.............................................................................................................................5

1 DESCRIPTION.................................................................................................................................................5

2 DIMENSIONS .................................................................................................................................................6

3 HYDRAULIC DATA .........................................................................................................................................6

4 INSTALLATION REQUIREMENTS

.................................................................................................................

Location ...................................................................................................................................................7

Flue..........................................................................................................................................................7

Ventilation

................................................................................................................................................

Gas Supply .............................................................................................................................................7

Electrical Supply ....................................................................................................................................7

Showers...................................................................................................................................................7

Flushing and Water Treatment ...............................................................................................................7

System Controls ......................................................................................................................................7

Page

5 INSTALLING THE BOILER ...............................................................................................................................8

Method of positioning the boiler on th wall...............................................................................................8

onnecting the boiler to the system.........................................................................................................8

Safety valve and condensats drains ........................................................................................................8

itting the horizontal flue .........................................................................................................................8

LECTRICAL CONNECTIONS ....................................................................................................................10

6 E

aking the Electrical Connections ........................................................................................................10

OMMISSIONING AND TESTING................................................................................................................10

7 C

re-commissioning ................................................................................................................................10

DHW ......................................................................................................................................................10

Central Heating .....................................................................................................................................10

Lighting the boiler...................................................................................................................................10

By pass and pump .................................................................................................................................11

Post Commissioning ..............................................................................................................................11

Handing over to the Householder .......................................................................................................11

8 FITTING THE CASING ..................................................................................................................................11

9 ADJUSTEMENTS AND SETTINGS ..............................................................................................................12

10 INCORRECT FUNCTION .............................................................................................................................17

11 GAS CONVERSION .....................................................................................................................................17

USER’S INSTRUCTIONS

12- CONTROL PANEL ......................................................................................................................................18

13- HOW TO USE ..............................................................................................................................................19

Switching on ........................................................................................................................................19

Switching on Central heating ................................................................................................................19

Switching on the Domestic Hot water ...................................................................................................19

Switching on the Domestic Hot water and Central Heating together ....................................................19

Stand by mode ......................................................................................................................................20

Turn off the boiler ..................................................................................................................................20

14 MAINTENANCE ............................................................................................................................................20

15 GUARANTEE ................................................................................................................................................20

16 PRACTICAL INFORMATION ........................................................................................................................20

17 GAS CONVERSION .....................................................................................................................................21

18 INCORRECT FUNCTION .............................................................................................................................21

19 TECHNICAL DATA .......................................................................................................................................22

This instruction booklet is especially designed for appliances installed in the The United Kingdom and The

Republic of Ireland

Page

INTRODUCTION

The CENTORA GREEN SYSTEM is a fully automatic, wall mounted, low water content condensing system boiler. It is a room sealed, fan assisted, balanced flued appliance providing central heating. It has electronic ignition and is suitable for all modern electrical control systems. The boiler is designed for sealed systems only and a circulating pump, expansion vessel together with a pressure gauge and safety valve are included within the boiler.

The standard horizontal flue kit is suitable for lengths 300 mm minimum to 600 mm maximum and includes an elbow adapter that can be rotated through 360 ° . The horizontal flue can extend up to 3 metres using 1 metre

flue bends are also available as accessories.

flue extension kits. 45

and 90

INSTALLER’S INSTRUCTIONS

Description

1.- Steel chassis complete with expansion vessel

- Sealed chamber

3.- Burner and heat exchanger assembly

4.- Air / gas connection

- 24 V modulating fan

6.- Gas valve

7.- Ignition electrode

- Ionisation probe

9.- Ignitor

10.- Combustion products manifold

- 24 V transformer

11.

12.- Siphon

13.- Electrical box

- Pump

14.

15.- Shunt plate

Pressure gauge

16.-

18.- Automatic air separator and automatic vent 19 - Central heating flowswitch

Central heating control thermistor

21.-

Overheat sensor

23.-

42.- Silencer

Fig. 1

24.- Display

27.- Setting key

28.- Setting key

29.- Central Heating switch

30.- Green indicator – Central Heating mode ON

31.- Central Heating temperature reducing key

32.- Central Heating temperature increasing key

33.- Green indicator – Power ON

34.- Orange indicator - Burner ON

35.- Red indicator - Lock out / flame failure

36.- Reset key

Fig 3

Fig. 2

33 36

3132

27 28

100

200

800

700

600

500

400

300

900

1000

1100 l/h

mCE

Débit mini (robinets thermostatiques fermés)

Hauteur manométrique

GVF

GVO

PVF

PVO

20 40 60 80 100 120Pf140 160 180 200 220 240

0,7

0,8

0,9

1,0

1,1

1,2

1,3

1,4

1,5

1,6

1,7

1,8

1,9

2,0

80°C

70°C

60°C

50°C

40°C

260

Pression à froid pour le circuit chauffage (en bar)

450 mini pour entretien

108 108

JLN

232

380

212

360

850

737

Ø 100

206

143

Ø 125

Ø 80

120

Ø 80

250

Ø 80

250

Ø 125

Ø 80

120

250

Dimensions

Outer case dimensions :

Width : 440 (minimum space required 450)

Height : 850

- Depth : 380 (24kW) - 405 (30 kW)

24 : 380 30 : 405

The boiler is suitable for the flue types:

• type C 13

• type C 33

• type C 53

afety valve

S center line

With packaging :

24 43 kg 30 45,5 kg

All dimensions in mm

inimum space required 450

I Safety valve C/H and condensate

Heating flow

Gas supply

Heating return

Minimum clearances :

- Both sides 5 mm

- Above casing 170 mm

- Below casing 200 mm

- Front ( for servicing) 500 mm

- Front (in operation) 5 mm

170

Fig. 4

Hydraulic Data

Type C 13

Pump head available

Minimum flow rate (with all heating thermostatic valves closed)

Pump head chart available at the outlet of the boiler

Central heating initial pressure when cold (in bar)

System capacity chart

Fig. 6

225

Fig. 5

C liter

Type C 33

Type C 53

The boiler comprises a double speed pump and an adjustable by-pass.

The chart (fig. 5) shows the pump head available regarding the flow rate. GVF means high speed by-pass closed, PVF means low speed by-pass closed, GVO means high speed by-pass fully open, PVO means low speed by-pass fully open.

For adjustment procedure, please refer to § 8.

The minimum flow rate to insure a correct functioning of the should be over 300 l/h (with thermostatic valves fully closed)

Maximum water capacity of Central Heating system :

The expansion vessel is pre-charged to 0.7 bar (10 lb/in 2 ).

The vessel is suitable for systems up to 145 litres capacity.

For systems of greater capacity an additional expansion vessel will be required. Refer to the chart below and BS 7074 pt 1 or BS 5449.

The minimum initial pressure of the system should be over

0.7 bar (1 to 1.5 bar is recommended).

D,E

ocation

Installation Requirements

The boiler can be installed on any suitable internal wall. Provision must be made to allow the correct routing of the flue and siting of the terminal to allow the safe and efficient

emoval of the flue products. A compartment or cupboard may

r be used provided that it has been purpose-built or modified for

he purpose. It is not necessary to provide permanent

t ventilation for cooling purposes. Detailed recommendations are given in BS 5440 pt 2. If it is proposed that it is installed in a timber framed building then reference must be made to British Gas Document DM2, or advice sought from CORGI. Avoid to install the boiler where the air inlet can be polluted by chemical products such as chlorine (swimming pool aera), or ammonia (hair dresser), or alcalin products (launderette)

Flue

etailed information on flue assembly is contained in the

D appropriate starter pack. The boiler must be installed so that the flue terminal is exposed to the free passage of external air at all times. It must not be allowed to discharge into another room or space such as an outhouse or closed lean-to. The minimum acceptable clearances are shown below:

- A Directly below an opening, window, etc 300 mm

- B Above an opening, window, etc 300 mm

- C Horizontally to an opening, window, etc 300 mm

- D Below gutters, soils pipes or drain pipes 75 mm

- E Below eaves 200 mm

- F Below balconies or car port roof 200 mm

- G From a vertical drain pipe or soil pipe 150 mm

- H From an internal or external corner 300 mm

- I Above ground roof or balcony level 300 mm

- J From a surface facing the terminal 600 mm

- K From a terminal facing the terminal 1200 mm

- L From an opening in the car port into the dwelling 1200 mm

- M Vertically from a terminal on the same wall 1500 mm

- N Horizontally from a terminal on the same wall 300 mm

- Q Fixed by Ubbink Rolux 4 GM flue terminal It may be necessary to protect the terminal with a guard. Reference should be made to the Building Regulations for guidance. Suitable guards may be obtained from the following manufacturer:

Quinnel Barret & Quinnel Wireworks Old Kent Road London SE15 1NL Tel: 0171 639 1357

Ventilation

The room in which the boiler is installed does not require specific ventilation. If it is installed in a cupboard or compartment

permanent ventilation is not required for cooling purposes. Gas Supply

The gas installation and soundness testing must be in accordance with the requirements of BS 6891.The boiler requires a 22 mm supply. Ensure that the pipe size is adequate for demand including other gas appliances on the same supply. Combustion system protection The sulphur level contained in the gas should comply with the européan Standards which are :

Electrical Supply

The appliance requires an earthed 230V - 50 Hz supply and must be in accordance with current I.E.E. It must also be

- maximum 150 mg/m3 for a short period in a year

- average level of 30 mg/m3 during one year

possible to be able to completely isolate the appliance

electrically. Connection should be via a 3 amp fused double-

pole isolating switch with contact separation of at least 3 mm on both poles. Alternatively, a fused 3 Amp. 3 pin plug and unswitched socket may be used, provided it is not used in a

oom containing a bath or shower. It should only supply the

r appliance.

The boiler is suitable for sealed systems only. The maximum

orking pressure for the appliance is 10 bar. All fittings and

w pipework connected to the appliance should be of the same

tandard. If there is a possibility of the incoming mains

s pressure exceeding 10 bar, particularly at night, then a suitable pressure limiting valve must be fitted. The boiler is designed to provide hot water on demand to multiple outlets within the property. If there is a requirement for greater demands, for example if the property has several bathrooms and cloakrooms, a vented or unvented hot water storage system may be used.

Showers

Any shower valves used with the appliance should be of a thermostatic or pressure balanced type. Refer to the shower manufacturer for performance guidance and suitability.

Flushing and Water Treatment

The performance of the appliance could be impaired by system debris or the effects of corrosion. The system must be flushed thoroughly to remove metal filings, solder, machining oils and other fluxes and greases before connecting the boiler. If it is an existing system, an appropriate flushing and descaling agent should be used. Refer to BS 7593 (1992) for guidance. For more information on the use of corrosion inhibitors, flushing and descaling agents, advice can be sought from the manufacturers of water treatment products such as:

Fig. 7

Betz Dearborn Ltd Foundry Lane Widnes Cheshire WA8 8UD Tel: 0151 424 5351 Fernox Manufacturing Britannica Works Clavering Essex CB11 4QZ Tel: 01799 550811

System Controls

The boiler is electrically controlled and is suitable for most modern electronic time and temperature controls. The addition of such external controls can be beneficial to the efficient operation of the system. The boiler connections for external controls are 24V and so only controls of 24V or that have voltage free contacts should be used.

lease check that you are familiar with the installation requirements before commencing work.(section 6)

P The installation accessories described in the following list are included in the boiler packaging.

Hanging bracket

- A paper template (showing the dimensions of the boiler with 5 mm side clearances, fitting instructions and commissioning instructions)

Connection tails

- Screws and wall plugs

- Connection washers and filters

- Installation manual

Method of positioning the boiler on the wall.

The paper template can be used to ensure the correct positioning of kitchen cabinets etc. It also details the commissioning instructions.

The paper template has to be fixed to the wall and used to locate the position of the hanging bracket and the centre for the flue hole.

Drill and plug the wall and secure the hanging bracket using the screws provided. Remove the boiler from its packaging as shown in fig. 8 and unscrew the 4 screws Place the boiler on the wall on the hanging bracket (Fig. 10). If required, there is space for all piping to pass behind the boiler. Using Fig. 10 for reference, connect the gas and water pipes and the valves to the base of the appliance using the tails provided. There is a 190 mm space between the valves and the wall to make these connections.

Connecting the boiler to the system

- Push in the tabs “P” (fig. 12) on either side of the boiler and pivot the electrical box forward to gain access to the valve connections

- Remove the yellow caps and connect the boiler to the taps using washers provided in the plastic bag. 2 x fibre washers for the C/H flow and return. 1 x rubber washer for gas connection.

Provision must be made to fill and recharge the system pressure. This can be achieved using a filling loop or other methods approved by the local water authority.

Installing the Boiler

A and remove the casing (Fig. 9).

Safety valve and condensate drains

The pressure relief valve tube is clear silicone. It should terminate below the boiler over a tundish or 22 mm pipe (see I fig 4) which should in turn discharge safely outside the premises. Care should be taken that it does not terminate over an entrance or window or where a discharge of heated water could endanger occupants or passers by.

The system should be carefully checked for leaks, as frequent refilling could cause premature system corrosion or unnecessary scaling of the heat exchanger. The pipe from the siphon 12 (fig. 1) should be connected to a drain is the conditions described in the relevant Brittish regulations.

External termination via condensate siphon The condensate drainage pipe should have a minimum diameter of 22 mm, it should be inserted into a suitable acid resitant pipe - e.g. plastic waste or overflow pipe (refer to preferably be installed and terminated within the building.

Pay special attention to not bend the condensates silicone drain pipe such as the flow will be interrupted. The discharge pipe must terminate in a suitable position: i) Connecting to an internal soil stack (at least 450mm above the invert of the stack). A trap giving a water seal of at least

75mm must be incorporated into the pipe run, there must also be an air break upstream of the trap.

ii) Connecting into the waste system of the building, such as a washing machine or sink. The connection should be upstream of the washing machine / sink (if the connection is down stream of the waste trap then an additional trap giving a minimum water seal of 75mm and an air break must be incorporated in the pipe run as above.

iii) Terminating into a gully below the grid level but above the water level. iv) Into a soakaway.

NOTE: IF ANY CONDENSATE PIPEWORK IS TO BE INSTALLTED EXTERNALLY, THEN IT SHOULD BE KEPT TO A MINIMUM AND BE INSULATED WITH

The condensate flow can reach 2 litres/hour; because of the acidity of the condensate products (Ph close to 2), take care before operation.

WATERPROOF

INSULATION

HAVE A CONTINUOUS FALL

AND

BS 6798 : 2000) by at least 50mm, must have a continuous fall and

Fitting the Horizontal Flue Attention ! Before starting the boiler, the siphon 12 fig. 1 must be filled with water. Before fitting the flue terminal onto

the boiler, please poor 1/4 litre of water in the exhaust pipe as shown in Fig. 11.

The instructions for the vertical and biflux (twin pipe) flue options are included with the relevant adapter kits. The standard flue supplied with the appliance is suitable for lengths from 300 mm minimum to 720 mm maximum.

This means for rear flueing, the standard kit will accommodate a maximum wall thickness of 600 mm, and for side flueing a maximum wall thickness of 587 mm. This takes into account the minimum appliance side clearances of 5 mm.

If the flue is a side exit installation, then calculate the position of the hole with a slope of 5 mm / metre towards

he boiler from the terminal. The flue should rise up slightly to the terminal in order to let the condensate coming back into the

t boiler.

ttention ! Use only specific condensation flue kit.

Installing the Boiler (continued)

Fig. 8

Fig. 9

Fig.10

Fig.11

COM

REP

M/A

VITESSE

CALYDRA

.23

FF ON

12 1

SW2

PROG

SW1

30V

OTEUR

R133

C28

R36

R35

C80

T16

R34

T12

R107

R33

R130

R129

Z7A

R132

R16 R

R14

C83

R6a

Z4A

C78

RL13

C73

D46

T10

RL8

RL7A

RL10

RL2A

RL2

R119

R118

113

R31

R32

R29

R25

R24

R18

R17

R140

137

TH4

R13

R115

C82

C81

R136

TH3

U11

R64

R63

R59

R128

112

D31

D30

D32

D42

D41

D35

D36A

D36

D17

D15

D14

J11

C34

C52

C51

C74

C31

C38

C27

C26

J12

U12

+5V

230 V

230V

THERMOSTAT

R. ACC

Mains

Electrical Connections

Making the Electrical Connections

Hinge down the electrical box to gain access to the electrical connections. Push in the tabs P (Fig 12) on either side of the boiler and pivot the box forward.

Connect the main cable

M to live, neutral and earth.

If using a room thermostat or other external control :

Undo the two retaining screws

V , remove cover and remove cable clamp. J (right side) (Fig. 13) Remove connector C from the PCB in the cover Connect the external control cable in place of the link S on the multipin plug C Reconnect multipin plug into the socket on the printed circuit board. Secure the cable using the cable clamp and replace the cover.

Note: The connections should be made so that should the lead be pulled from its anchorage, the current carrying wires become taut before the earth wire

Fig. 12

Pre-commissioning

Ensure that the system has been adequately flushed. Purge gas supply of air and test for soundness. Carry out final electrical tests to ensure the correct polarity and earthing continuity.

DHW

Open the main cold feed valve 40. Open all hot taps to purge DHW system. Check for water soundness. Check flow rate at the bath tap is set correctly (see technical data).

Central Heating

Open flow and return valves on the boiler 37 and 41 (Fig. 14) Open the automatic air vent 18 (Fig. 2) Fill system and vent radiators. Set system pressure and remove filling loop. Check for leaks. Manually check pump is free to turn. Switch on electrical supply. Press the Central Heating switch 29 (Fig. 3) to switch on heating mode. Press the Allow pump to run for several minutes.

Commissioning and Testing

+ key 32 (Fig. 3) to set heating temperature to maximum.

Socket for connector

Isolate the electrical supply. Drain boiler and check water filter for installation debris. Replace filter and recharge system.

Lighting the Boiler

Inspect the entire gas supply for soudness, including the gas meter, the gas installation should be in accordance wiith the relevant standards, in GB this is BS 6891 and in IE this is the current edition of I.S.813. Connect gas pressure gauge to test point Turn on the gas supply and boiler gas tap Ensure electrical supply is on. Ensure all external controls are calling for heat. Press on Central Heating switch 29 (Fig. 3) to switch on heating mode. Press the The boiler will light. Allow the boiler to heat system. Check the inlet gas pressure (working pressure) while boiler is operating in hot water mode.(Refer to technicaldata). Check the operation of the boiler controls and safety devices.(see separate servicing leaflet for details).Set the by pass (refer to the paragraph bellow). Re-flush the system to remove any dissolved oils and fluxes. Recharge system pressure and introduce any water treatment as required.

connector C

39 (Fig. 14).

+ key 32 (Fig. 3) to set heating temperature to maximum.

Fig. 13

Commissioning and Testing (continued)

By pass and Pump

The boiler is fitted with a pre-adjusted by pass. Although adjustment is not normally necessary, the by pass can be reset by turning screw D (Fig. 14) anticlockwise to open the by-pass using the chart below for guidance. If used on a system with thermostatic radiator valves, the flow rate with the thermostatic valves closed

hould be adjusted to at least 300 l/hr. The enclosed charts indicate

s the residual head of the pump available for the system. The pump

itted on the boiler is a double speed model. (GV = High speed and

f PV = low speed). The speed setting is described in chapter 9.

peed selection is only available in C.H. mode.

ost Commissioning

nsure system pressure has been set correctly.

E Set all parameters of the boilers as shown in chapter 9 ADJUSTMENTS AND SETTINGS. Set boiler thermostat and controls. Set programmer to householder’s requirements. Set external controls. Ensure the Logbook is fully completed with your contact details and required readings and details of the installation.

Handing Over to the Householder

Demonstrate the lighting and operation of the boiler. Demonstrate how to maintain the system pressure. Demonstrate the operation and setting of the built-in clock. Explain the benefits of annual maintenance by a competent person. Explain how to register guarantee. Ensure the Householder countersigns the Log Book to confirm that these demonstrations have been carried out and understood. For IE, it is necessary to complete a “Declaration of Conformity” to indicate compliance to I.S.813. An example of this is given in the current edition of I.S.813. An example of this is given in the curent edition of I.S.813. in addition it is necessary to complete the “Benchmark” Log Book.

Fig. 14

Fitting the Casing

Fitting the casing

Remove the protecting film from the casing :

- Position the casing as shown in Fig. 16

- Slide down the casing and put the casing holes on the plastic pins located on the top of the chassis

- Control the correct position of the casing onto the boiler

- Tighten the 4 screws located at the bottom as shown in Fig. 15.

Fig.15

Fig. 16

The boiler is delivered with a pre setting values described in menus 3 and 4. All settings can be changed by the installer or a qualified person. To gain access to the setting keys please, open the front

P. (Fig. 17)

door

Adjustments and Settings

ISPLAY

Menu key

Setting key

Fig. 17

DISPLAY

1 st digit

Right sideLeft side

access

Key +/-

for Parameter

Setting

3 rd digit

2 nd digit

To gain access to setting menus press simultaneously on and keys on the Right. side during 5 seconds. (fig. 18). Menu

1 is displayed.

Changing the menu :

Press on Menu key ( to change for the next menu.

Changing section in a menu (available only for menu 3 and 4 :

Press on or key on the Right side to change from a section to the previous or the next in a menu.

Note

at the first section, pressing on – key will change for the last section of the menu.

Setting a parameter in a section:

Press on setting key (

this modification and to get out from setting mode. The 2nd and 3rd digit stop flashing.

Recalling the basic configuration:

Select menu 3 or 4 then press together on key on the Right side and setting key for more than 5 seconds. The digits will flash

Erasing the default register :

Select menu 1 then press together on + key on the Right side and setting key for more than 5 seconds. The digits will

When you arrive at the last section of a menu, pressing on + key will change for the the 1st section. When you are

CM for a while to indicate that the operation is completed.

flash

key on the Left. side) (Fig.17). The menu number is displayed for 3 seconds. Press on menu key

key on the Left side) to enter in modification mode. The 2nd and 3rd digits are flashing Press on

or on the Right side to select the correct value then press on Setting key to valid

Note : To exit from setting mode, leave the boiler for approx. 1 minute then the computer will switch back to user mode.

ACTION CONFIGURATION

ISPLAY

5 ”

x times

once

Menu - 1 - Default register

Record the last 10 defaults

Section Digit 1 Digit 2 and 3

Last default occured 0

ast but one default occurred 1

code from 01 to 99

•

ode from 01to 99

•

... ... code from 01 to 99

Last default occurred before the previous one 9

code from 01 to 99

•

Note -- is displayed if no default is recorded.

Menu - 2 - Boiler conditions

Indicates the conditions or the configurations of the boiler

Section Digit 1 Digit 2 and 3

x times

Software version of display PCB 0

Flue type 2

Room thermostat is calling for heat 3

Theoretical position of the 3 way valve 4

DHW flow temperature in Celsius degrees 5

CH flow temperature in Celsius degrees 7

Software version of main PCB 9

•

10 to 99

1 : FF

variable speed

•

0 : no

1 : yes

0 : DHW

1 : CH

from 00 to 99

10 to 99

CTION

nce

x times

ONFIGURATION

Menu - 3 - Boiler options

Section Digit 1 Digit 2 and 3

Under floor heating system 0 0 : no

1 : yes

DISPLAY

setting

Factory

ACTION CONFIGURATION

Menu - 4 - Boiler settings

Section Digit Digit

once

Room thermostat operation 0 0 : Burner only

x times

Pump speed 1 0 : High speed

Pump post circulation duration 2 0,0 min

From 0 to 5 minutes by step of 0.5 min.

1 2 and 3

1 : Burner and pump

1 1 : Low speed

2 1,0 min

2 5,0 min

0,5 min

DISPLAY

setting

Factory

Maximum Central Heating flow temperature

CH anti cycling delay 8 0,0 min

From 0 to 7 minutes by step of 0.5 min.

CH maximum output limitation Model 24 From step 0 (P. min.) 8 kW Value from

to step 10 (P. max.) 24 kW 9 0 to 10 Model 30 From step 0 (P. min.) 9 kW Value from

to step 10 (P. max.) 28 kW 9 0 to 10

4 80°

8 2,5 min

8 5,0 min

0,5 min

X X

ACTION CONFIGURATION

X X

Menu - 5 - Combustion rate control mode

press once

Effect Display

ISPLAY

wait 5 ”

press once

Combustion rate control mode OFF

Switching on the combustion rate control mode. Central heating output reach the maximum power set in menu 4 section 9.

Switching the combustion rate

down to minimum power.

Switching on the combustion rate to maximum output set in menu 4 section 9.

Central heating temperature is displayed in celsius degrees. The 3 dots indicate that the combustion rate control is ON at maximum output.

Central heating temperature is displayed in celsius degrees. The dot indicates that the combustion rate control is ON at minimum output.

Central heating temperature is displayed in celsius degrees. The 3 dots indicate that the combustion rate control is ON at maximum output.

Switching off the combustion rate

control mode.

press once

Locking conditions of the combustion rate control mode :

- boiler in stand by mode

- room thermostat is not calling for heat

- room thermostat is calling for heat but the maximum temperature is reached

- boiler in lockout mode

- after a reset or if the main supply fails

- end of the mode if operator leave menu 5

- after 15 minutes if there is no actions on keyboard

Note : As soon as the combustion rate control mode is on, Central Heating key is inactive.

CH heat output setting :

If you would like to change the setting of C/H heat output, please proceed as follow :

he factory setting is 18 kW and the following explanation refer to menu 4 section 9)

NOTE: t

(

Adjustments and Settings (continued)

Display

- Switch to installer mode, press key

and on the Right side for 5

econds.

s The display shows :

hen

-1-t

default register.

- press 3 times on menu key (on the

Left side ) to gain access to menu The display shows :

-4- then the value set for section 0 ( 00

or 01 respectively Action on burner only or pump and burner)

- change for section 9 (Adjustment of CH

heat output). Press on key on Right side times. The display shows : (906 which corresponds to the 18 kW which is the factory setting) 9 = section 9 06 = 18 kW

f there is no default in the

0•--i

-4-,

5 ”

x 3

x 9

- press on setting key (on the Left

side) one time, the 2nd and 3rd digits flash together. Then press on

on the Right side to change for 3.0 on

2nd and 3rd digit. The display shows : Press on setting key to confirm the value. The display stops flashing. Setting procedure is finished. To exit from setting mode, leave the boiler for approx. 1 minute then the computer will switch back to user mode.

After programming please close the door P (Fig. 17)

key

In case of problem, or when the boiler has to display a message, the display flashes 2 digits. Please refer to the table bellow to diagnose the default.

or default 01 and 03, the red indicator

Overheating lock out

Incorrect Operation

s alight (Fig.18)

35i

FAULT

Fig. 18

Code

display Fault description Information on functioning

01 Overheating lock out 03 No flame detection 05 Anti freezing system, pump on 06 Anti freezing system, pump and burner on 07 No water circulation in primary circuit 08 No water in the primary circuit 11 Central Heating thermistor faulty (open circuit) 12 18 Attempt to re light 20 Wiring problem 23 Fan speed too low 24 Fan control system defective 31 Communication problem with the display PCB 32

Central Heating thermistor faulty (open circuit)

Communication problem with the main PCB

If the boiler is not set for the gas type, conversion kits are available. To convert the boiler, please use exclusively Chaffoteaux & Maury parts and proceed as it is mentioned in the instruction manual provided with the conversion kit.

Gas Conversion

USER’S INSTRUCTIONS

Control panel (Fig. 19)

16.- Pressure gauge

24.- Display temperature adjustment

27.- Setting key

28.- Setting key

29.- Switch for Central Heating mode

Control Panel

30 27 28

Fig. 19

31.- Key to reduce the Central Heating temperature

32.- Key to increase the Central Heating temperature

33.- Green indicator - Power ON

34.- Orange indicator - Burner ON

35.- Red indicator - Lock out / flame failure

36.- Reset button

30.- Green indicator Central Heating

37 4139

Fig. 20

Connecting bracket Taps shown in Open position(fig. 21)

37 : Central heating flow isolating valve 39 : Gas service tap 41 : Central heating return isolating valve 43 : Central heating pressure relief valve

How to Use

Switching on

. Check that pressure in central heating system is above 0.7 bar and below 1.5 bar with the pressure gauge 16.

2. Check that the gas service tap is opened at the gasmeter and main power is on. Green indicator Power ON

33.

3. Open the gas tap The boiler is now ready to use.

ttention !If the boiler stays a long time without working, some air in the gas pipe can hinder the first lightings. (please refer

to Section 18 Incorrect Function)

39 (Fig. 20).

Switching on Central heating

Press on key 29 , the green indicator 30 will light and the display will show the Heating

low temperature.

Keys

31 and 32 allow to adjust the temperature required in the Central Heating

system regarding the weather conditions.

• press to increase temperature when weather is cold

• press to reduce temperature when weather is fair

During the temperature setting operation the display will flash.

If the room thermostat is calling for heat, a dot will be displayed at the bottom of the 3rd digit

Stand by mode A fixed digit at the centre of the display and the green indicator 33 on

Putting the boiler in stand by mode and anti freeze system. :

Press on key 29

During the all duration of the stand by mode, an automatic anti-sticking system will switch on the pump for 1

inute and make a movement of the 3 way valve each 23 hours.

m The stand by mode will disable the anti-freeze function of the room thermostat (if fitted). To leave the room thermostat anti freeze system operative, please let the Central Heating mode on.

The boiler is equipped with an automatic anti freeze system which permanently on.

If the Central Heating temperature decrease bellow 7°C, the pump will start. If the Central Heating temperature decrease bellow 4°C, the pump and the burner will start.

Turn off the boiler

- Press on key 29

- Switch off the main electrical supply

- Shut off the gas service tap

Note : In this conditions, the anti-freeze system is inoperative

How to Use (continued)

to switch off CH mode. The green indicator

39 (fig. 21)

30 will stop.

30 will stop

As with your car, your boiler will work more reliably and efficiently if regularly serviced. We recommend an annual service check. The service history of the appliance will be marked on the logbook.

The manufacturer`s guarantee is for 12 months from the date of purchase. The guarantee is voidable if the appliance is not installed in accordance with the recommendations made herein or in a manner not approved by the manufacturer. To assist us in providing you with an efficient after sales service, please return the guarantee registration card enclosed with the boiler with out delay.

Pump anti-sticking device

When the boiler is switched on, an automatic anti-sticking system will switch on the pump for 1 minute and make a movement of the 3 way valve each 23 hours. This is a normal functioning.

Precaution to avoid freezing

We recommend you to contact your installer or local service centre to take precautions adapted to your system.

Chose one of the following solution :

- 1) Drain completely the Central Heating system

- 2) Protect the Central Heating system with anti freeze chemical products and verify periodically the concentration

- 3) Leave the Heating mode switched on and set the room thermostat to anti-freeze mode (between 5 and 10°C)

- 4) Leave the boiler in stand by-mode, the anti-freeze device will switch on the pump and the burner if necessary.

Maintenance

Guarantee

Practical Information

Helpful suggestions

- Periodically check the system pressure using the pressure gauge and make sure that the pressure is between 1.0 and 1.5 bar when the system is off and cool. If the pressure is below the minimum recommended value, the pressure must be brought into the acceptable range. Consult your installer for checking and refilling the system.

If the pressure level drops on a frequent basis, it is likely there is a water leak in the system. If this is the case, your

nstaller must inspect the system.

- The outer panel of the boiler’s case must only be cleaned with a damp cloth, do not use abrasive cleaners. The control panel can be wiped with either a damp or dry cloth. Spray polishes must not be used on the control panel surface or knobs. Care must be taken in preventing any liquid entering the appliance.

This appliance is suitable for Natural gas or LPG. A gas conversion must be made by a competent person.

Fault

The boiler doesn’t start

Red indicator alight

Gas Conversion

Incorrect Operation

Cause

No gas, no water or no electricity

Air in the gas pipe

Room thermostat switched off

Ignition lockout

Solution

Check the water pressure in the central heating system and external electrical supply, check that the gas supply is on, should there still be a problem contact your local service centre.

Contact your local service centre.

Turn up the room thermostat

Wait for a few minutes Press the reset button led will go out and the boiler attempts to re-light.

If the red indicator lights too frequently, please call your local service centre.

36 (fig.21) the red

Noises in CH system

Radiators rise in temperature During summer season

If these solutions do not cure the fault, call a qualified professional

Air presence in CH system or. Insufficient pressure

Gravity effect in the CH system

Purge of air the system and rise up the system pressure (chapter 8)

Close the heating flow isolating valve. Don’t forget to open it again when you will start heating.

Technical Data

Model Centora Green System 24 Centora Green System 30

ppliance category........................................... II 2H3P II 2H3P

Heat gross input C/H maxi ............................... 27.8 kW 94534 Btu/h 31.6 kW 107843 Btu/h

Heat output C/H 50°/30° maxi.......................... 26 kW 88732 Btu/h 30 kW 102383 Btu/h

eat output C/H 80°/60° maxi.......................... 24 kW 81907 Btu/h 28 kW 95557 Btu/h

C/H operating temperature............................... 80°C max 25°C min 80°C max 25°C min

C/H circuit pressures Min operating................. 0.7 bar 10 Ib/in

C/H circuit pressures Max operating................ 2.5 bar 36.3 Ib/in

Compartment ventilation .................................. not required not required

Natural gas G20

as rate C/H max ............................................ 2.64 m

Gas rate C/H mini............................................. 0.87 m

as valve restrictor diameter ........................... without without

Propane L.P.G

G31

h 93 ft

/h 31 ft3/h 1 m3/h 35 ft3/h

Gas rate C/H max. ........................................... 1.94 kg/h 36 ft3/h 2.21 kg/h 41 ft3/h

Gas rate C/H mini............................................. 0.64 kg/h 12 ft

Gas valve restrictor diameter ........................... 4.40 mm 4.8 mm

Safety discharge .............................................. 3 bar 43.5 Ib/in

Expansion vessel - Pre-charge pressure ......... 0.7 bar 9.4Ib/in

Net capacity at 3 bar in liter.............................. 5.44 5.44

Adjustable by-pass Electrical characteristicis

Supply .............................................................. 230 v 230 v

Consumption.................................................... 150 w 150 w

Protection......................................................... IP 44 IP 44

Fuse F1............................................................ 2 A 2 A

Fuse F2............................................................ 1,25 A 1,25 A

Fuse F3............................................................ 0,315 A 0,315 A

Fuse F4............................................................ 0,250 A 0,250 A

External controls .............................................. 24 v. 24 v

h 3.01 m

/h 0.73 kg/h 13 ft3/h

0.7 bar 10 Ib/in

2.5 bar 36.3 Ib/in

h 106 ft

3 bar 43.5 Ib/in

0.7 bar 9.4Ib/in

This appliance is suitable for Natural gas or LPG. A gas conversion must be made by a competent person.

Chaffoteaux & Maury are continuously improving their products and therefore reserve the right to change specifications without prior notice and accepts no liability for any errors or omission in the information contained in this document.

Manufacturer: Chaffoteaux & Maury - France

Commercial subsidiary: MTS

MTS Hughenden Avenue High Wycombe Bucks HP13 5FT

Telephone: Fax: (01494) 459775 Internet: www.chaffoteaux.co.uk E-mail:

Technical Support Help Line: 0870 241 8180 Customer Service Help Desk: 0870 600 9888

(GB) Limited

Building

(01494) 755600

info@uk.mtsgroup.com

1310360g- 3/2004

chaffotteaux Centora Green System 24 Nat User guide

Specifications and Main Features

Frequently Asked Questions

User Manual