Ariston A 30 RFF, A 24 RFF User Manual

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SSYYSSTTEEMM AA

System A 24 RFFI System A 30 RFFI

Installation and Servicing Instructions Type C Boilers

G.C.N: 47-116-14 (24 kW) G.C.N: 47-116-15 (30 kW)

LEAVE THESE INSTRUCTIONS WITH THE END-USER

Country of destination

These instructions are suitable for the System A boilers :

MTS supports Benchmark, the heating industry code to ensure the correct installation, commissioning and servicing of domestic central heating systems.

To The Householder Make sure that your installer completes Section 24 of this manual

boiler. It contains important information about your particular installation that may be required by service engineers. It will also provide

contact details for the installer should you need guidance in the use of this appliance or if there are any problems. 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 must be recorded in Section 25 of this manual. In the unlikely event of any problems with your boiler or system you should first contact your installer. If your installer cannot

resolve the problem he should telephone our national service helpline. A charge may be made if MTS Service is called out to resolve a non-product related fault. Your statutory rights are not affected.

To The Installer

As part of the commissioning of this appliance it is necessary to complete Section 24 of this manual and give this manual to the Householder. Please ensure that your customer is aware of the importance of keeping this manual safe as a record of the installation (Section 24) and the appliance service history (Section 25).

, this provides a record of the commissioning of your

Please ensure that your customer is aware of the correct operation of the system, boiler and controls. MTS recommend the use of protective clothing, when installing and working on the appliance i.e. gloves.

CUSTOMER CARE

MTS, 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.

Advice on installation or servicing can also be obtained by contacting the Chaffoteaux Technical and Customer Service Departments on:

TECHNICAL DEPARTMENT CUSTOMER SERVICE DEPARTMENT Tel: 0870 241 8180 Tel: 0870 600 9888 Fax: 01494 459775 Fax: 01494 459775

GUARANTEE

The manufacturer’s guarantee is for 2 years 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.

CAUTION

In the United Kingdom, installation, start-up, adjustments and maintenance, must be performed by a competent person only, in accordance with the current Gas Safety (Installation & Use) Regulations and the instructions provided.

In the Republic of Ireland, the installation and initial start up of the appliance must be carried out by a Competent Person in accordance with the current edition of I.S.813 “Domestic Gas Installations”, the current Buidling Regulations, reference should also be made to the current ETCI rules for electrical installation.

All CORGI registered installers carry a CORGI ID card, and have a registration number. Both should be recorded in the Benchmark Commissioning Checklist (Section 24). You can check your installer is CORGI registered by calling CORGI direct on:- (01256) 372300.

Improper installation may cause damage or injury to individuals, animals and personal property for which the manufacturer will not be held liable. To ensure efficient and safe operation it is recommended that the boiler is serviced annually by a competent person.

If it is known that a fault exists on the appliance, it must not be used until the fault has been corrected by a competent person.

Contents

USTOMER CARE

uarantee ............................................................................................................................................................2

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

ontents ...............................................................................................................................................................3

NTRODUCTION ..................................................................................................................................................4

USER’S INSTRUCTION.......................................................................................................................................5

1 CONTROL PANEL...........................................................................................................................................5

2 HOW TO USE .................................................................................................................................................6

Switching on ..........................................................................................................................................6

Time setting ............................................................................................................................................6

Heating ...................................................................................................................................................6

Burner ON................................................................................................................................................6

Stand by mode ........................................................................................................................................6

Switch OFF .............................................................................................................................................6

Anti freezing mode ..................................................................................................................................7

3 MAINTENANCE ..............................................................................................................................................7

4 GUARANTEE ..................................................................................................................................................7

5 PRACTICAL INFORMATION...........................................................................................................................7

6 SETTING THE TIME CLOCK ..........................................................................................................................8

6.1 SETTING THE MECHANICAL CLOCKS .................................................................................8

6.2 SETTING THE DIGITAL CLOCK..............................................................................................9

Page

INSTALLERS’ INSTRUCTIONS.........................................................................................................................11

7 DESCRIPTION...............................................................................................................................................11

8 DIMENSIONS ................................................................................................................................................12

9 HYDRAULIC DATA .......................................................................................................................................12

10 INSTALLATION REQUIREMENTS................................................................................................................13

11 INSTALLING THE BOILER............................................................................................................................17

12 CONNECTING THE FLUE.............................................................................................................................

12.1 FITTING THE COAXIAL FLUE

12.2 FITTING THE 5” FLUE ..........................................................................................................................20

12.3 FITTING VERTICAL FLUE....................................................................................................................22

12.4 FITTING THE TWIN FLUE ....................................................................................................................23

13 ELECTRICAL CONNECTIONS .....................................................................................................................26

14 COMMISSIONING AND TESTING................................................................................................................32

14.1 INITIAL PREPARATION........................................................................................................................32

14.2 INITIAL START-UP

14.3 ADJUSTING THE CO2..........................................................................................................................33

14.4 GAS CONVERSION

14.5 ADJUSTING THE MAXIMUM HEATING POWER ................................................................................33

14.6 FITTING THE EXTERNAL SENSOR.....................................................................................................33

14.7 EXTERNAL SENSOR SET-UP..............................................................................................................34

14.8 COMPLETION.......................................................................................................................................34

14.9 OPERATIONAL CHECKS .....................................................................................................................34

14.10 INSTRUCTING THE END USER...........................................................................................................35

15 FITTING THE CASING

16 SEQUENCE OF OPERATION.......................................................................................................................37

CENTRAL HEATING MODE

17 ADJUSTMENTS AND SETTINGS.................................................................................................................38

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

..............................................................................................................................33

..................................................................................................................................36

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

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

19 20

SERVICING INSTRUCTIONS

18 REPLACEMENT OF PARTS.........................................................................................................................45

18.1 To Gain General Access........................................................................................................................45

18.1.1 Removing the front panel.......................................................................................................................45

18.1.2 Lowering the control panel.....................................................................................................................45

18.2 Access to the Combustion Chamber .....................................................................................................46

8.2.1Removing the combustion chamber front panel ....................................................................................46

18.2.2 Removing the burner .............................................................................................................................47

8.2.3Removing the detection electrode .........................................................................................................47

18.2.4 Removing the ignition electrode.............................................................................................................47

8.2.5Removing the fan...................................................................................................................................48

18.2.6 Removing the gas valve.........................................................................................................................48

18.2.7 Removing the heat exchanger...............................................................................................................49

18.2.8 Removing the spark generator...............................................................................................................49

18.3 ACCESS TO THE WATER CIRCUIT....................................................................................................50

18.3.1 Drain down.............................................................................................................................................50

18.3.2 Removing the 3 way valve.....................................................................................................................50

18.3.3 Removing the 3 way valve shutter.........................................................................................................50

18.3.5 Removing the pump...............................................................................................................................51

18.3.6 Removing the pressure relief valve ......................................................................................................51

18.3.7 Removing the domestic expansion vessel.............................................................................................52

18.3.8 Removing the overheat thermostat........................................................................................................52

18.3.9 Removing the temperature sensors (NTC’s).........................................................................................52

18.3.10 Removing the pressure gauge...............................................................................................................53

18.3.11 Removing the DHW flow switch.............................................................................................................53

18.3.12 Removing & cleaning the condensate trap............................................................................................53

18.4 ACCESS TO THE CONTROL SYSTEM ...............................................................................................53

18.4.1 Removing the PCB’s..............................................................................................................................53

18.4.2 Removing the fuses...............................................................................................................................54

18.5 CONNECTING THE EXTERNAL SENSOR..........................................................................................54

19 INCORRECT FUNCTION......................................................................................................................55

20 GAS CONVERSION .............................................................................................................................56

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

22 MAINTENANCE INSTRUCTIONS.........................................................................................................57

22.1 GENERAL REMARKS...........................................................................................................................57

22.2 CLEANING THE PRIMARY EXCHANGER...........................................................................................57

22.3 OPERATIONAL TEST...........................................................................................................................57

23 SHORT SPARES LIST

24 TECHNICAL DATA................................................................................................................................59

25 BENCHMARK COMMISSIONING CHECKLIST

26 SERVICE INTERVAL RECORD............................................................................................................62

..........................................................................................................................58

....................................................................................61

INTRODUCTION

The System A 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 extension kits. 45 ° and 90° flue bends are also available as accessories.

The System cylinder.

A Plus

includes a diverter valve and so can provide central heating and hot water flow for an indirect

1. Control panel

USER’S INSTRUCTIONS

(System Plus only)

Fig 1

Control panel (fig. 1)

26.- Display

27.- On/off push button and power on indicator light

29.- Reset push button and red indicator locking light

30.- Cylinder Hot water start button and temperature

setting (System Plus only)

31.- Central Heating start button and temperature setting

32.- Menu button

33.- Reducing button

34.- Increasing button

35.- Setting button

Connecting bracket

Taps shown in Open position (fig. 2)

39 : Gas service tap 40 : Cylinder return valve (System Plus only) 41 : Central heating flow isolating valve

42 : Central heating return isolating valve 43 & 44: Filling taps 45 : Filling loop

Fig. 2

2. How to Use

Switching on and filling instructions

1. Check the pressure in the central heating system is above 0.7 bar and below 1.5 bar with the pressure gauge 16 (fig.1), should it be neccessary to re-pressurise the system,ensure the filling loop the pressure gauge will now start to rise, once the pressure reads 1.0 bar, close the filling taps and disconnect the filling loop.

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

3. Open the gas tap

4. The boiler is now ready to use.

NOTE: If the boiler is left off for a long time, some air in the gas pipe can hinder the first lighting

Time setting

You can set the time by using the keys underneath the display.

ress the setting key for 5 seconds. The hour digits on the display will begin to flash. Set the correct time by using the or

keys. To alter the minutes, press the setting key again, the minute digits will begin to flash. Set the correct time by using

the or keys, once the correct time has been set, press the setting key once more to accept the time. Note: This is not a timer for Central Heating control.

To obtain heating

Turn the Central heating knob (30 Fig.1) between mini and maxi. During the setting flashes and displays the temperature the knob has been set to.

27 Power ON

39 (fig.2).

ttempts. (please refer to Section 19 Incorrect Function, page 47)

45 (fig. 2) is attached, open the filling taps 43 & 44,

OSED

The flashing will continue for a while after the setting and the display will then indicate one of the following :

- the heating temperature when the room thermostat is ON (Calling).

- the time when the room thermostat is OFF (Satisfied).

Tank pre-heating mode (System plus only)

Turn the control knob 30 between min and max. During the adjustment, flashes. The flashing goes on for a while after the adjustment, then the display indicates the time.

When DHW is drawn, the display indicates the following:

Heating mode

Turn the control knob 31 between min and max. During the adjustment flashes. The flashing goes on for a while after the adjustment, the display will then indicate:

- the central heating flow temperature if the room thermostat is calling for heat.

- the time if the room thermostat is OFF.

Room thermostat request

pictogram

Room thermostat request symbol

BURNER ON and output level

The flame digits will increase or decrease depending on the output.

"Programming" button: button not activated, the domestic hot water exchanger temperature holding function is activated permanently. "Yellow" button activated, the temperature holding function respects the programme (11 p.m. OFF, 6 a.m. ON, original setting). The display indicates the following

Flame digit

Burner ON

Anti-freeze and anti-sieze modes

Provided the ON/OFF button is on (green light), the water pressure is adequate and the boiler has not shut down due to an error, the anti-freeze and ant-sieze operations will remain active.

hen the anti-freeze comes on, one of two codes will be displayed with the snowflake pictogram .

W The two possible codes are 05 (pump anti-freeze) or 06 (burner anti-freeze).

05 (Pump anti-freeze):

When the boiler senses a temperature of 8°C or lower, the pump will run for 2 minutes, the

oiler will then check if the flow temperature is higher than 8°C. Should the temperature

b still be between 3°C and 8°C the above process will be repeated a maximum of 10 times, after this the burner will light and run until a temperature of 33°C is detected (see 06

urner anti-freeze below).

06 (Burner anti-freeze):

When the boiler senses a temperature of 3°C or lower, the boiler will fire at minimum power until a temperature of 33°C is

chieved, the pump will run for 2 minutes after the burner is switched off.

nti-sieze mode

The anti-sieze mode will activate the pump for 1 minute everytime the boiler has been inactive for 23 hours.

Note: The anti-freeze and anti-sieze modes will be automatically overriden as soon as there is a demand for heaing from the room thermostat or cylinder thermostat.

The anti-freeze functions will only protect the boiler from freezing, to protect the Central Heating system it will be necessary to leave the boiler powered, the Central Heating knob turned on and the room thermostat set to its anti-frost setting (usually between 5°C and 10°C).

3. Maintenance

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 in the Service Interval Record (

Section 25).

4. Guarantee

The manufacturer`s guarantee is for 2 years 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 without delay.

5. Practical information

Cleaning the casing and control panel

Should it be necessary to clean the casing and control panel, do so only with a damp cloth, do not use any spray polishes or cleaners.

Precaution to avoid freezing

We recommend that you contact your installer or local service centre for further advice on the actions to be taken to avoid the system freezing (should the boiler be turned off at the mains isolator)

• CH system

Choose one of the following solution :

- 1) Drain the Central Heating system completely

- 2) Protect the Central Heating system with anti freeze chemical products and periodically check 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 your boiler in stand-by mode, the anti-freeze device will switch on the pump and the burner if necessary.

• DHW system

Turn off the main cold water supply and drain the cylinder.

1010

1111

1212

1313

1414

1515

1616

1717

1818

1919

2020

2121

2222

2323

2424

1212

6. Setting the time clock

6.1 Setting the mechanical clock

Fig. 3

Fig. 4

1. General layout

The mechanical clock covers a 24 hour period. Each tappet represents 15 minutes A (Fig. 4). An override switch is located on

B (Fig 4).

symbol to control the central heating by the clock. Put the switch

B to «I» to select

the clock

2. To set the time

To set the time of day, grasp the outer edge of the dial and turn slowly clockwise until the correct time is lined up with the arrow

C (Fig. 4).

3. To Set the "On" and "Off" times

The clock uses a 24hours system. e.g. 8 = 8.00 am and 18 = 6.00 pm "ON" periods are set by sliding all tappets between the "ON" time and the "OFF" time to the outer edge of the dial.The tappets remaining at the centre of the dial are the "OFF" periods.

4. For operation

Put the selector switch B to the permanent operation or to «0» to turn the central heating off permanently.

6. Setting the time clock (continued)

Day

anual switch

ummer and

inter time

setting

Reset

nter

eekday/s

nter

the hours

eek-

ays

flash E

nter

minutes

nter

switching

imes

mput

time

Automatic Manual Continuous Operation Operation Operation

The switching If the current You can only times corres- switching mode is return to automatic pond to the changed manually, mode from the program the next switching continuously-ON entered. time will be and continuously-  carried out auto- OFF switching  matically again modes by  according to the pressing the " "  entered switching key.  program.

= ON = ON = Continuously ON

= OFF = OFF = Continuously OFF

6.2 Setting the Digital Clock

Operating the time switch

The steps marked with the symbol “

Preparing for Operation

” are necessary to carry out a switching program.

Activate the “Res” switch (=RESET) to reset the time switch to its default setting (activate using a pencil or similar pointed instrument). Do this:

- every time you wish to “reset” the time switch

- to erase all switching times and the current time of day. After approximately two seconds the following display appears:

Enter current time and weekday

- Keep the “ ” button pressed down During the summer time period press the +/- 1h button once. Enter the hour using the “h” button Enter the minutes using the “m” button Enter the day using the “Day” button

1 = “Monday”..............7 = Sunday

- Release the “ ” button.

6. Setting the time clock (continued)

Entering the switching times

ou have 20 memory Iocations available. Each switching time takes up one memory location.

eep pressing the “Prog” button until a free memory location is shown in the display “– –:– –”.

rogramme ON or OFF with the “ ” button:

P “ ”= OFF; “ ”= ON Enter the hour using “h” Enter the minutes using “m” If a switching command is to be carried out every day (1 2 3 4 5 6 7) then store using the “ ” button, otherwise select the day(s) it is to be carried out by using the “Day” button. When the day seIection is left bIank, the programmed switching instruction operates at the same time every day

2 3 4 5 6 = Monday – Saturday

2 3 4 5 = Monday – Friday

1 6 7 =Saturday – Sunday

Selection of single days: 1 = Mon. .............. 2 =Tues.

Save the switching time with the “ ” button. The time switch enters the automatic operating mode and displays the current time of day. Begin any further entry of a switching time with the “Prog” switch. If your entry is incomplete, the segments not yet selected will blink in the display. After programming is completed, and you return the time clock to the current time display with the “ ” button, the time clock will not activate any switching instruction required for the current time. You may need to manually select the desired switching state with the “ ” button. Thereafter, as the unit encounters further switching instructions in the memory in real time, it will correctly activate all subsequent switching instructions.

Manual Override Switch “ ”

With the “ ” you can change the current setting at any time. The switching program already entered is not altered.

Reading the programmed switching times

Pressing the “Prog” button displays the programmed switching times until the first free memory location appears in the display “– – : – –”.

If you now press the “Prog” button once again, the number of free memory Iocations will be displayed, e.g. “ locations are occupied, the display “

Changing the programmed switching times

Press the “Prog” button repeatedly until the switching time you want to change is displayed. You can now enter the new data. See

Entering the switching times”.

point “

Notes on storing switching times:

If you end your entry of the switching times by pressing the “Prog” button, then the switching time you have entered will be stored and the next memory location displayed.

In addition, a complete switching command is stored pressed. The time switch then enters the automatic operating mode and displays the current time again.

Deleting individual switching times

Press the “Prog” button repeatedly until the switching time you wish to delete is shown in the display. Then set to “– –” using the “h” or “m” button and keep the “ ” button pressed down for around 3 seconds. The switching time is now erased and the current time is displayed.

00” appears.

automatically after around 90 seconds provided no other button is

18”. If all memory

AM / PM time display

If you press the “+/-1h” and “h” buttons at the same time, the time display switches into the AM/PM mode.

7. Description

24 10

22 21

INSTALLER’S INSTRUCTIONS

- Steel chassis complete with expansion vessel

2.- Sealed chamber

3.- Burner and heat exchanger assembly

4.- Air / gas connection

- 24 V modulating fan

6.- Gas valve

- Ignition electrode

8.- Ionisation probe

- Ignitor

10.- Combustion products manifold

11.- Siphon

12.- Silencer

- Electrical box

13.

14.- Pump

16.- Pressure gauge

17.- Three way valve

18.- Automatic air separator and automatic vent

20.- Main exchanger inlet thermistor

21.- Main exchanger outlet thermistor

22.- Overheat sensor

23.- Central heating pressure relief valve

24.- Manual air vent with pipe

25.- Thermo fuse

Fig. 5

(System Plus only)

Fig. 6

26.- Display

27.- On/off push button and power on

indicator light

29.- Reset push button and red indicator locking light

30.- DHW control knob and temperature setting

(System Plus only)

31.- Central Heating control knob

temperature setting

32.- Menu button

33.- Reducing button

34.- Increasing button

35.- Setting button

and

Fig. 7

8. Dimensions

440

450 mini pour entretien

54 54 54 54

JKLMN

296

141

289

720

691,5

121,5

172,5

4,7

0.05

0.1

0.15

.25

.35

0.4

.45

200 400 600 800 1000 1200 1400

24 kW

30 kW

20 40 60

80 100 120

140 160 180 200 220 240

1,0

1,1

1,2

1,3

1,4

1,5

1,6

1,7

1,8

1,9

2,0

Capacité maximale de l'installation (en litres)

260

Pression à froid pour le circuit chauffage (en bar)

280

40°C

50°C

60°C

70°C

80°C

296 (24 kW)

60 (30 kW)

All dimensions in mm

afety valve C/H and condensate

I S

eating flow

K Cylinder return (System Plus only) L

Gas supply

Cold water supply

Heating return

With packaging :

24 kW : 34 kg 30 kW : 37 kg

minimum space required 450

390

Fig. 8

9. Hydraulic data

Pressure (bar)

Central heating initial pressure when cold (in bar)

System capacity chart

Pump Head Graph (15/50 & 15/60)

flow rate (l/hr)

Fig. 9

C litre

Fig. 10

The boiler is fitted with an automatic by-pass as standard. The graph (Fig. 9) shows the development of the pressure

available in relation to flow (on exit from the boiler ∆T 20°C).

To ensure correct operation, the minimum flow of the appliance must be 300 l/h. (Thermostatic taps closed).

Capacity of the installation. The water heater is fitted with a pressurised expansion

vessel. Volumes : 6 litres Pressure: 0,7 bar. The volume of the expansion vessel in a pressurised

appliance varies according to:

- the average operating temperature in

- the static height, which is the difference in metres between the highest point of the appliance and the expansion vessel axis).

The minimum cold filling pressure of the appliance is 1 bar (recommended pressure between 1.2 and 1.7 bar).

The pressure of the expansion vessel should always be greater than the static height (in metres) divided by 10.

10. Installation Requirements

Reference Standards

In the United Kingdom, the installation and initial start up of

he boiler must be by a CORGI Registered installer in

t accordance with the installation standards currently in effect, as well as with any and all local health and safety standards i.e. CORGI.

In the Republic of Ireland the installation and initial start up of

he appliance must be carried out by a Competent Person in

t accordance with the current edition of I.S.813 “Domestic Gas

nstallations” and the current Building Regulations, reference

I should also be made to the current ETCI rules for electrical

nstallation.

he installation of this appliance must be in accordance with

T the relevant requirements of the Local Building Regulations, the current I.E.E. Wiring Regulations, the by-laws of the local water authority, in Scotland, in accordance with the Building Standards (Scotland) Regulation and Health and Safety document No. 635, “Electricity at Work Regulations 1989” and in the Republic of Ireland with the current edition of I.S. 813 and the Local Building Regulations (IE).

For detailed information on the installation of Condensing boilers, reference should be made to the

the Condensing Boiler Assesment Procedure for Dwellings

ODPM Guide to

such as an outhouse or closed lean-to.

ondensing boilers have a tendency to form a plume of water

C vapour from the flue terminal due to the low temperature of the flue gasses. The terminal should therefore be located with due regard for the damage or discolouration that might occur to

uildings in the vicinity and consideration must also be given to

b adjacent boundaries, openable windows should also be taken

nto consideration when siting the flue.

i The minimum acceptable clearances are shown below:

Fig. 11

C.O.S.H.H.

Materials used in the manufacture of this appliance are nonhazardous and no special precautions are required when servicing.

Codes of Practice

Installation should also comply with the following British Standards Codes of Practice:

BS 7593:1992 Treatment of water in domestic hot

water central heating systems BS 5440-1:2000 Flues BS 5440-2:2000 BS 5449:1990 Forced ciculation hot water systems BS 6798:2000

BS 6891:1998 Installation of low pressure gas pipe up

BS 7671:2001 BS 4814:1990 Specification for expansion vessels BS 5482:1994 Installation of L.P.G.

and in the Republic of Ireland in accordance with the following codes of practice

I.S. 813 Domestic Gas Installations

Air Supply

Installation of gas fired hot water

boilers of rated input not exceeding

70kW

to 28mm

IEE Wiring Regulations

A - Directly below an open window or other opening 300 B - Below gutters, solid pipes or drain pipes 75 C - Below eaves 200 D - From vertical drain pipes and soil pipes 75 E - From internal or external corners 300 F - Above ground on a public walkway or patio 2100 G- From a surface facing a terminal 2500 H - From a terminal facing a terminal 2500

I - Vertically from a terminal in the same wall 1500 J - Horizontally from a terminal in the same wall 300 K - Horizontally from an opening window 300 L - Fixed by vertical flue terminal

NOTE:

It may be necessary to protect the terminal with a guard, if this is the case it will be necessary to purchase a stainless steel terminal guard. Reference should be made to the Building Regulations for guidance.

Ventilation

The room in which the boiler is installed does not require specific ventilation.

permanent ventilation is not required for cooling purposes.

FLUE MUST NOT BE INSTALLED IN A PLACE LIKELY TO

CAUSE A NUISANCE

If it is installed in a cupboard or compartment

Avoid installing the boiler where the air inlet can be polluted by chemical products such as chlorine (swimming pool area), or ammonia (hair-dresser), or alkaline products (launderette)

Flue Detailed information on flue assembly can be found in Section

12 “Connecting the flue”

The boiler must be installed so that the flue terminal is exposed to the free passage of external air at all times and must not be installed in a place likely to cause nuisance. It must not be allowed to discharge into another room or space

Gas Supply

The gas installation and soundness testing must be in accordance with the requirements of BS 6891. Ensure that the pipe size is adequate for demand including other gas appliances on the same supply.

Electrical Supply

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

10. Installation Requirements (continued)

t must also be possible to be able to completely isolate the

I appliance electrically. Connection should be via a 3 amp

used double-pole isolating switch with a contact separation

f of at least 3 mm on both poles. Alternatively, a fused 3 Amp.

pin plug and unswitched socket may be used, provided it is

3 not used in a room containing a bath or shower. It should

nly supply the appliance.

o The boiler is suitable for sealed systems only. The maximum

working pressure for the appliance is 6 bar. All fittings and pipework connected to the appliance should be of the same standard. If there is a possibility of the incoming mains pressure exceeding 6 bar, particularly at night, then a suitable pressure limiting valve must be fitted. The boiler is designed to provide Central Heating on demand

o a Central Heating system and to heat an Indirect Hot

t Water Storage Cylinder.

Flushing and Water Treatment

The boiler is equipped with a stainless steel heat exchanger. The detailed recommendations for water treatment are given

in BS 7593:1992 (Treatment of water in domestic hot water central heating systems); the following notes are given for general guidance;

If the boiler is installed on an existing system, any unsuitable additives must be removed.

Under no circumstances should the boiler be fired before the system has been thoroughly flushed; the flushing procedure must be in line with BS7593:1992.

We highly recommend the use of a flushing detergent appropriate for the metals used in the circuit. These include cleansers produced by Fernox and BetzDearborn, whose function is to dissolve any foreign matter that may be in the system;

In hard water areas or where large quantities of water are in the system the treatment of the water to prevent premature scaling of the main heat exchanger is necessary.

The formation of scale strongly compromises the efficiency of the thermic exchange because small areas of scale cause a high increase of the temperature of the metallic walls and therefore add to the thermal stress of the heat exchanger.

Demineralised water is more aggressive so in this situation it is necessary to treat the water with an appropriate corrosion inhibitor.

Any treatment of water by additives in the system for frost protection or for corrosion inhibition has to be absolutely suitable for all the metals used in the circuit.

The use of a corrosion inhibitor in the system such as Fernox MB-1, BetzDeaborn Sentinel X100 or Fernox System Inhibitor is recommended to prevent corrosion (sludge) damaging the boiler and system;

If anti-freeze substances are to be used in the system, check carefully that they are compatible with the metals used in the circuit.

TS suggests the use of suitable anti-freeze products such

M as Fernox ALPHI 11, which will prevent rust and incrustation

aking place.

eriodically check the pH of the water/anti-freeze mixture of

P the boiler circuit and replace it when the amount measured is

ut of the range stipulated by the manufacturer ( 7 < pH < 8).

o DO NOT MIX DIFFERENT TYPES OF ANTI-FREEZE

In under-floor systems, the use of plastic pipes without protection against penetration of oxygen through the walls can cause corrosion of the systems metal parts (metal piping, boiler, etc), through the formation of oxides and bacterial agents.

o prevent this problem, it is necessary to use pipes with an

T “oxygen-proof barrier”, in accordance with standards DIN 4726/4729

system separate by installing heat exchanger

with a specific system water treatment.

IMPORTANT Failure to carry out the water treatment procedure will invalidate the appliance warranty.

Location

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 removal of the flue products. A compartment or cupboard may be used provided that it has been purpose-built or modified for the purpose. It is not necessary to provide permanent 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 should be made to British Gas Document DM2, or advice sought from CORGI.

Where a room sealed appliance is installed in a room containing a bath or shower, the appliance and any electrical switch or appliance control, utilising mains electricity should be situated specifically in accordance with current IEE Wiring Regulations.

For unusual locations, special procedures may be necessary.

BS 6798:2000 gives detailed guidance on this aspect.

Condensate Discharge

The condensate discharge hose from the boiler must have a continuous fall of 2.5 into a suitable acid resistant pipe - e.g. plastic waste or overflow pipe. minimum diameter of 22mm, must have a continuous fall and preferably be installed and terminated to prevent freezing. The discharge pipe must be terminated in a suitable position:

ii) Connecting into the waste system of the building such as

. If pipes of this kind are not used, keep the

s of those

and must be inserted by at least 50mm

The condensate discharge pipe must have a

Connecting into 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 also must be an air break upstream of the trap.

a washing machine or sink trap. The connection must 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.

10. Installation Requirements (continued)

iii) Terminating into a gully, below the grid level but above

the water level.

iv) Into a soakaway. NOTE:

externally then it should be kept to a minimum and be insulated with a waterproof insulation and have a continuous

If any condensate pipework is to be installed

fall. The total length of external pipe used should not exceed 3 metres. Some examples of the type of condensate terminations can be found below.

1. Internal termination of condensate drainage pipe to internal stack

2. External termination of condensate drainage pipe via internal discharge branch (e.g. sink waste) and condensate siphon

10. Installation Requirements (continued)

3. External termination of condensate drainage pipe via internal discharge branch (e.g. sink waste - proprietary fitting)

4. External termination of condensate drainage pipe via condensate siphon

11. Installing the Boiler

Please check that you are familiar with the installation requirements before commencing work (Section 10). 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)

- Connection tails and valves

- Screws and washers

- Connection washers

- Installation, Servicing and Operating Instructions Air Inlet Header (for use with twin flue pipe)

- Guarantee Card

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. 12, unscrew the clamp locking bolt Place the boiler on the wall on the hanging bracket (Fig. 14).

NOTE: TH

Connecting the boiler to the system

- Remove the boiler casing as described in Section 18.

- Push in the tabs “

- Remove the caps and connect the valves to the boiler using the washers provided in the plastic bag.

E APPLIANCE MUST NOT BE FITTED ON A COMBUSTIBLE WALL SURFACE

P” (Fig. 14) on either side of the boiler and pivot the electrical box forward to gain access to the valve

connections 2 x fibre washers for the C/H flow and return.

1 x rubber washer for gas connection

A and remove the casing (Fig. 13).

Safety valve discharge

The pressure relief valve tube is made of copper. It should terminate below the boiler 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.

Fill the Central Heating and DHW system and bleed air from the system as described in Section 14 . The system should be carefully checked for leaks, as frequent refilling could cause premature system corrosion or unnecessary scaling of the heat exchanger. The condensate pipe from the siphon (11 Fig. 6) should be connected to a drain as described in the relevant Brittish regulations. Pay special attention to not bend the plastic condensate drain pipe in such a way as to cause the flow to be interrupted. Please use exclusively drain pipe material compatible with condensate products. (refer to The condensate flow can reach 2 litres / hour; because of the acidity of the condensate products (Ph close to 2), take care before operation.

Fitting the Horizontal Flue Attention ! Before starting the boiler, the trap (11 Fig. 6) must be filled with water. Before fitting the flue onto the boiler, pour 1/4 litre of water into the exhaust pipe as shown in Fig. 15 (page 19).

Instructions on fitting the flue can be found in Section 12.

IMPORTANT!! Use only the specific condensation flue kit supplied by MTS (GB) Limited.

BS 6798 : 2000)

11. Installing the Boiler (continued)

ig. 12

Fig. 13

Fig. 14

Fig. 15

118

12. Connecting the Flue

150 mm

* pente 5 mm par mètre

150

* pente

The boiler should only be installed with a flue system supplied by MTS (GB) Limited. These kits are supplied separately to the appliance in order to respond to different installation solutions. For more information with regard to the inlet/outlet accessories consult the accessory catalogue. The boiler is supplied ready for connection to a

oncentric flue system.

:SE

IMPORTANT!!

BEFORE CONNECTING THE FLUE, ENSURE THAT 1 WATER HAS BEEN POURED INTO THE EXHAUST CONNECTION TO FILL THE CONDENSATE TRAP (FIG. 16). SHOULD THE T

RAP BE EMPTY THERE IS A TEMPORARY RISK OF FLUE

GASSES ESCAPING INTO THE ROOM

E PAGE

24 F

OR MAXIMUM AND MINIMUM FLUE RUNS

(TA

LITRE OF

BLES

A, B ANDC)

ig. 16

Warning

The exhaust gas ducts must not be in contact with or close to inflammable material and must not pass through building structures or walls made of inflammable material. When replacing an old appliance, the flue system must be changed.

Ø 60/100 mm

Fig. 17

Installation without extension

Important

Ensure that the flue is not blocked. Ensure that the flue is supported and assembled in accordance with these instructions.

162

Installation with extension

slope

slope 5 mm per metre

Fig. 18

12.1 Fitting the coaxial flue (Ø 60/100 Horizontal)

CO 1X SI 1X EL 2X WALL SEALS (

X FLUE PIPE INCLUDING TERMINAL (1 METRE - 60/100)

NTENTS

LICONE

BOW

O-RING(60mm)

(90O)

NTERNAL &EXTERNAL)

1X FLUE CLAMP 1X SC

REWS

1x Seal

Once the boiler has been positioned on the wall, insert the elbow into the socket and rotate to the required position. N

OTE

: It is

possible to rotate the elbow 360oon its vertical axis. Using the flue clamp, seals and screws supplied The 1 metre horizontal flue kit (3318073) supplied is suitable for an exact

easure the distance from the face of the external wall to the face of the flue elbow

(Fig 19) secure the elbow to the boiler.

X dimension of 815mm.

X - Fig 17),this figure must now be

(

subtracted from 815mm, you now have the total amount to be cut from the plain end of the flue. Draw a circle around the outer flue and cut the flue to the required length taking care not to cut the inner flue, next cut the inner

flue ensuring that the length between the inner and outer flue is maintained.

(Fig 19).

e.g.

X = 555mm 815-555 = 260mm (Length to be cut from the plain end of the flue).

Once cut to the required length, ensure that the flue is free from burrs and reassemble the flue. If fitting the flue from inside of the building attach the grey outer wall seal to the flue terminal and push the flue through the hole, once the wall seal has passed through the hole, pull the flue back until the seal is flush with the wall. Alternatively, the flue can be installed from outside of the building, the grey outer seal being fitted last.

Clamp

Screws

Seal

Fig. 19

12.2 Fitting the 5” Flue (Ø 80 / 125 Horizontal/vertical)

Should the flue require extending, the flue connections are push fit, however, one flue bracket should be used to secure each metre of flue.

OTE:SEE

PAGE

24 FOR

MAXIMUM

Once the boiler has been positioned on the wall, it is necessary to insert the vertical flue runs into the boiler flue socket (not supplied with flue kit -

Push the adaptor onto the boilers flue connection, grease the seals then add extensions or elbows as required, secure the adaptor, using the clamp and screws provided.

AND MINIMUM FLUE RUNS

Ø 80/125 adaptor (FIG. 20) for both horizontal and

Part No 3318095).

To fit extensions or elbows it is first necessary to ensure that the lip seal is fitted correctly into the inner flue, once verified, it is simply necessary to push them together, no clamps are necessary to secure the flue components.

Before proceeding to fit the flue, ensure that the maximum flue length has not been exceeded (See the tables on Page 23) and that all elbows and bends have been taken into consideration, the maximum flue length is 10 metres, for each additional 90 elbow 1 metre must be subtracted from the total flue length, and for each 45o0.5 metres must be subtracted from the total flue length (the height of the vertical adaptor and a 45obend can be seen in Fig. 21 and a 90obend in Fig. 22).

OTE: DO NOT CUT THE VERTICAL FLUE KIT.

Fig. 20

Fig. 22

Fig. 21

12.3 Fitting the Coaxial Flue (Ø 60 / 100 Vertical)

NOTE:

E PAGE

OR MAXIMUM AND MINIMUM FLUE RUNS

CONTENTS: 1X SI 1X CO

X VE

1 3X SC

O-RING(60mm)

LICONE

NICALADAPTOR RTICALFLUEKIT REWS

(60/100mm)

(80/125mm)

The vertical flue kit is supplied with a specially designed weather proof terminal fitted, it can be used either with a flat roof or a

itched roof.

ig. 23

he Vertical flue kits useable lengths with the pitched roof flashings are indicated in

efore proceeding to fit the flue, ensure that the maximum flue length has not been exceeded (See the tables on Page 24) and

that all elbows and bends have been taken into consideration, the maximum flue length is 4 metres, for each additional 90 elbow 1 metre must be subtracted from the total flue length, and for each 45o0.5 metres must be subtracted from the total flue

(the height of the vertical adaptor and a 45obend can be seen in Fig. 24).

length Mark the position of the flue hole in the ceiling and/or roof (see Fig. 23 for the distance from the wall to the centre of the flue). Cut a 120 mm diameter hole through the ceiling and/or roof and fit the flashing plate to the roof. DO NOT cut the vertical flue kit. To connect the vertical flue kit directly to the boiler, place the vertical starter kit

(Part No. 3318079) (see Figs. 23 and 24) onto the exhaust manifold and secure with the clamp, fit the vertical adaptor onto the vertical starter kit (note: there is no need to use a clamp to secure this as it is a push fit connection), the vertical flue kit must then be inserted through the roof flashing, this will ensure that the correct clearance above the roof is provided as the terminal is a fixed height.

Should extensions be required, they are available in 1 metre

(Part No. 3318077), 500mm (Part No. 3318078) and 160mm lengths, they must be connected directly to the vertical starter kit before connecting the adaptor to allow the vertical flue kit to be fitted. In the event that extension pieces need to be shortened, they must only be cut at the male end and it must be ensured that the inner and outer flue remain flush.

When utilising the vertical flue system, action must be taken to ensure that the flue is supported adequately to prevent the weight being transferred to the appliance flue connection by using 1 flue bracket per extension.

When the flue passes through a ceiling or wooden floor, there must be an air gap of 25 mm between any part of the flue system and any combustible material. The use of a ceiling plate will facilitate this. Also when the flue passes from one room to another a fire stop must be fitted to prevent the passage of smoke or fire, irrespective of the structural material through which the flue passes.

162

Fig. 23

Fig. 24

12. Connecting the flue (continued)

B23

C53

123,5 162

230 MIN *

200

132

12.4 Fitting the twin pipe (Ø80/80)

NOTE: Where it is not possible to terminate the flue within the distance permitted for coaxial flues, the twin flue pipe can be used by

fitting a special adaptor to the flue connector and using the aperture for the air intake located on top of the combustion c

A To utilise the air intake it is necessary to:

1) Take the air intake cover off

2) Assemble the flange on the header supplied with the boiler

3) Insert the restrictor if necessary, on the tube or the elbow

4) Insert the header on the tube or the elbow up until the lower stop (you do not have to use the washer).

5) Insert the elbow/header in the boiler air intake hole and fasten it with screws The twin flue pipes can be fitted with or without additional elbows and need no clamps, simply ensure that the red o-ring is

inserted in the female end of the flue pipe and push the extension piece fully into the previous section of flue pipe or elbow, check that the o-ring is not dislodged when assembling the flue.

Twin pipe can also be converted back to Coaxial flue to enable vertical termination with a coaxial kit by using the pipe bridge (Twin - Coaxial Adaptor - Part No. 705767). When running the twin flue pipe vertically.

It is not recommended that the pipe bridge for horizontal termination, however in the unlikely event that this proves to be a necessity it is extremely important that the entire flue has a fall of 5mm in every metre back to the boiler, and where the 60mm inner flue of the concentric terminal connects to the pipe bridge, this point must be adequately sealed with silicone sealant to avoid condense leakage at this point.

EE PAGE 24 FOR MAXIMUM AND MINIMUM FLUE RUNS (TABLE C

hamber.

lways ensure that the flue is adequately supported, avoiding low points. (MTS supply suitable clamps as Part No. 705778).

)

When siting the twin flue pipe, the air intake and exhaust terminals must terminate on the same wall, the centres of the terminals pipe can be run horizontally, however, the terminal and the final 1 metre of flue must be installed with a fall away from the boiler to avoid rain ingress.

It is also strongly recommended that the air intake pipe run be constructed of insulated pipe to prevent condense forming on the outside of the tube.

The maximum permissible flue length for twin flue is dependent on the type of run used. For flue runs with the intake and exhaust pipes under the same atmospheric conditions (T

metres (24kW and 30kW), for runs with the terminals under different atmospheric conditions (T must extend 0.5 metres above the ridge of the roof (this is not obligatory if the exhaust and air intake pipes are located on the same side of the building). For T

The maximum length is reached by combining the total lengths of both the air intake and exhaust pipes. length of 60 metres for example, will allow a flue run of 30 metres for the air intake and 30 metres for the exhaust pipes, also for each 90 from the total flue length.

Some of the acceptable flue configurations are detailed page 24. For further information relating to flue runs not illustrated, please contact the Technical Department on 0870 241 8180.

must be a minimum of 280 mm apart and the air intake must not be sited above the exhaust terminal. The air intake

YPE 4) the maximum length is 60

YPE 5) the exhaust terminal

YPE 5 also, the maximum permissible combined length is 60 metres (24kW and 30kW).

Therefore a maximum

elbow 2.2 metres must be subtracted from the total length and for each 45oelbow 1.4 metres must be subtracted

162

Fig. 25

Fig. 26

123,5

200

107

ø 100

0 mm

0 10 20 30 40 50 60

100

120

140

Air inlet length in meter

Horizontal flue exhaust length in meter

Minima HE 24, 30 & 35 FF

Vertical flue exhaust length in meter

Working area

12.4 Fitting the twin pipe flue (Ø80/80) (continued)

Fig. 27

In the event that twin flue pipes are used, and the boiler has a side clearance of less than 60mm from the wall, it is necessary

o cut a larger diameter hole for the flue pipe, this should be ø10 cm, this will then allow for easier assembly of the air intake

t elbow and the tube outside the wall (see Fig. 28).

TABLE

Concentric outlet

60/100

24 , 30 kW

(Type 1, Type 2, Type 3)

Min length Max. length

0.3 m 10m

equivalency for

elbow

Length

0.5 m

elbow

TABLE

Concentric outlet

80/125

24 , 30 kW

(Type 1)

24 , 30 kW

(Type 2, Type 3)

Twin flue outlet

24 , 30 kW

Type 4

80/80

Type 5

80/80

Min length Max. length

0.3 m 30 m

0.3 m 35 m

Min length Max. length

10 m

(35m air / 35m exhaust)

70 m

elbow

0.5 m

1.4 m

2.2 m

ig. 28

1 m

For coaxial systems, the maximum development value, mentioned in the table above also takes into account an elbow. For twin flue systems the maximum development value, mentioned in the table includes the exhaust gas/air intake terminal.

Type 5 outlets should respect the following instructions: 1- Use the same ø 80 mm flue pipes for the gas intakes and exhaust gas ducts. 2- If you need to insert elbows in the gas intake and exhaust gas ducts, you should consider for each one the equivalent length to be included in the calculation of developed length. 3- The exhaust gas duct should jut above the roof by at least 0.5 m. 4- The intake and exhaust gas ducts in Type 5 must be installed on the same wall, or where the exhaust is vertical and the air intake horizontal, the terminals must be on the same side of the building.

Twin flue length diagram (24 and 30 kW)

EXHAUST

AIR INTAKE

AIR INTAKE MUST NOT BE

FITTED ABOVE THE EXHAUST

12.4 Fitting the twin pipe flue (Ø80/80) (continued)

TYPE 1

TYPE 4

NOTE: DRA

WINGS

TYPE 2

TYPE 5

ARE INDICATIVE OF FLUEING OPTIONS ONLY

TYPE 3

Fig. 29

13. Electrical connections

ON OFF

J12

ON OFF

Cylinder thermistor

Making the Electrical Connections

inge down the electrical box to gain access to the

H electrical connections. Push in the tabs

n either side of the boiler and pivot the box for-

o ward.

emove the PCB cover (see Section 18.4).

R Connect the live neutral and earth wires to the main

able.

f using a room thermostat or other external control,

I they can be connected in place of the link on the terminal block (Diagram A- Fig. 32).

ote: Use only controls designed for voltage free

N switching or 24V supply. Do not connect to a 230V supply, and do not run 230v cables alongside the low voltage cables.

All necessary settings for room thermostat operations are described in Section 17 ADJUSTMENTS AND SETTINGS.

P (Fig. 30)

Fig. 30

Cable 230 V 2P + T

System A

System A Plus

System A Plus change the EEPROM on PCB

LEGEND

1 NTC Connectors

isplay Connectors

2 D 3 EEPROM Button 4 24V DC Supply 5 Fan Connector

lame Detection Connector

6 F 7 Fuses 2A 230V (X2)

8 230V Connector 9 Auxillary 230V Connector 10 Actuators 230V Connector 11 Time Clock Connector (Internal) 12 Room Thermostat Connector 13 Remote Control Connector 14 Under Floor Heating Connector 15 Not Used

- If a remote time clock is to be fitted, using a volt-free switching time clock, remove the link wire and connect the switching wires from the time clock following points above (see also

- If using an external time clock and room thermostat, remove the link wire and connect in series as above (see also Diagram C Fig. 32).

Live and Neutral connections to operate the clock motor must be taken from a suitable source.

Connector refer to those provided with the clock or page 8 of this manual.

11 (Fig. 31), is provided for connecting an optional integral time clock or programmer, for fitting instructions, please

1112

Diagram B Fig. 32).

Fig. 31

CONNECTOR 12

Fig. 32

13. Electrical connections (continued)

13.1 Fitting the mechanical and digital time clocks

To fit the integral time clock it is necessary to proceed as

ollows;

Isolate the electical supply to the appliance;

- Remove the front panel as described in Section 18.1.1;

- Remove the plastic cover on the right hand side (Fig. 33) and pull out the 4 wires (Fig. 34); Connect the time clock wires as follows;

CHANICALMODEL

Red Wire - Contact 1 Black Wire - Contact 2 Black Wire - Contact 3

rey Wire - Contact 5

NOTE: TH

Red Wire - Contact 1 Black Wire - Contact 2 Grey Wire - Contact 3

NOTE:SE

- Push the clock back into the panel and refit the casing

E TWO BLACK WIRES ONCONTACTS

DIGITAL MODEL (Fig. 36)

CONDBLACKWIRE IS NOT CONNECTED

panel (Fig. 37).

Fig. 35

(Fig. 44)

2 & 3 C

AN BE REVERSED

Fig. 33

Fig. 34

Fig. 36

Fig. 37

13. Electrical Connections (continued)

13.2 Connecting Zone Valves (System A)

The boiler can be connected to a central heating system that uses two zone valves to allow connection to an indirect storage cylinder.

There are two wiring diagrams shown, one for the connection to an

nvented Cylinder (Diagram. A) and one for connection to an open

U vented cylinder (Diagram B).

In both cases the boiler connection is shown as

elates to the terminal on the PCB for external controls (see 12F

OOM

, which

IG.

When connecting the boiler to an external cylinder do not run 240V cables and the cables for the R

terminal (Fig. 38) together, use

OOM

separate cables to prevent induced voltage on the low voltage

witching circuit.

NOTE:THEUSEOFA‘Y’ PLAN SYSTEM IS NOT POSSIBLE WITH THE SYSTEM A BOILER DUE TO THE LOW VOLTAGE SWITCHING OF THE

APPLIANCE

* IM

PORTANT

CYLINDER R C

OMMISSIONING STAGE

SURE THAT A BALANCING VALVE IS FITTED ON THE

AND BALANCED CORRECTLY AT

ETURN

FIG. 38

WIRING DIAGRAM FOR CONNECTION TO AN

OPEN VENTED CYLINDER

DIAGRAM B

WIRING DIAGRAM FOR CONNECTION TO AN MTS

UNVENTED CYLINDER

DIAGRAM A

14. Commissioning and Testing

14.1 Initial preparation

MTS (GB) Limited support the initiative. In

ections 24 and 25 (pages 60 and 61) of this manual the

ommissioning Checklist and Service Interval

C Record can be found. It is important that this is completed in the presence of your customer, they are shown how to use it, and it is signed by them. Please instruct your customer that they must have this manual with them whenever they contact a service engineer or us.

Preliminary electrical system checks to ensure electrical safety must be carried out by a competent person i.e.

olarity, earth continuity, resistance to earth and short circuit.

p F

LLING THEHEATINGSYSTEM

Remove the front casing panel and lower the control panel as

escribed in Section 18.1 (page 41).

d Open the central heating flow and return cocks supplied with the connection kit; Unscrew the cap on the automatic air release valve one full turn and leave open permanently; Close all air release valves on the central heating system; Gradually open the valves at the filling point (filling loop) until water is heard to flow, do not open fully; Open each air release tap starting with the lowest point and close them only when clear water free of air is visible;

Purge the air from the pump by unscrewing the pump plug anti-clockwise, also manually rotate the pump shaft in the direction indicated by the pump label to ensure the pump is free;

Refit the pump plug; Continue filling the system until at least 1.5 bar registers on the pressure gauge; Inspect the system for water soundness and remedy any leaks discovered.

OF THE

ILLING

DHW SYSTEM: Close all hot water draw off taps; Open the cold water inlet cock supplied with the connection kit; Slowly open each draw off tap and close them only when clear water, free of bubbles, is visible.

The detailed recommendations for water treatment are given in BS 7593:1992 (Treatment of water in domestic hot water central heating systems); the following notes are given for g

If the boiler is installed on an existing system, any unsuitable additives must be removed; U system has been thoroughly flushed; the flushing procedure m

Firstly fill the central heating system with the power off, and flush through cold, fill the central heating system again, a until it reaches its operating temperature and flush the s

NOTE:

The checks to be run before initial start-up are as follows:

1. Make sure that:

eneral guidance;

nder no circumstances should the boiler be fired before the

ust be in line with BS7593:1992.

dding a flushing detergent, run the boiler on central heating

ystem, refill the system with a suitable corrosion inhibitor,

ILURE T

ESULT IN THE WARRANTY BECOMING VOID

O CARRY OUT THE FLUSHING PROCEDURE WILL

14.2 Initial start-up

- The screw on the automatic air valve has been loosened when the system is full;

- CAUTION: It is very important to fully bleed the main heat exchanger of air when filling the boiler.

You must continue to bleed the heat exchanger from the

manual vent pump through the automatic air vent 18 fig.6, through several central heating and hot water cycles to ensure the air is fully bled from the system.

Close the manual vent after bleeding.

24 (on the top of the heat exchanger), and

AS SUPPLY:

G Inspect the entire installation including the gas meter and test for soundness. The entire installation should be in accordance with the relevant standards. In GB this is BS 6891 and in IE this is the current edition of I.S.813.

The connection on the the appliance is a 15mm copper tail located at the rear of the gas service cock (

39 Fig. 2 - page

If the gas supply serves other appliances, ensure that an adequate supply is available both to the boiler and the other appliances when they are in use at the same time.

Pipe work must be of an adequate size. Pipes of less than 22mm should not be used.

Open the gas cock (supplied with the connection kit) to the appliance and check the gas connection on the appliance for leaks.

ATER TREATMENT:

W The boiler is equipped with a stainless steel heat exchanger.

- If the water pressure in the system is below 1.5 bar, bring it up to the appropriate level;

- Ensure that the gas cock is closed;

- Make sure that the electrical connection has been made properly and that the earth wire is connected to an efficient earthing system;

- Supply power to the boiler by pushing the on/off button (Fig. 1) the green led indicator light will illuminate;

- Turn the central heating control knob 30 (Fig. 1) to maximum and switch the time clock (if fitted) to constant and turn up the room thermostat (where fitted); After 7 seconds, the boiler will signal a shutdown due to

ignition failure. Leave the boiler as it is until all the air has been bled from the system;

- Loosen the cap on the head of the pump to eliminate any air pockets; Repeat the procedure for bleeding the radiators of air;

Open the hot water taps for a short period;

- Check the system pressure and , if it has dropped, open the filling loop again to bring the pressure back up to 1.5 bar;

14. Commissioning and testing (continued)

14.3 Adjusting the CO2

2. Make sure that all radiator valves are open;

3. Turn on the gas cock and check the seals on the connections with any approved soap solution and eliminate any leaks;

4. Press the reset button ignition. If the burner does not light the first time, wait 1 minute and repeat the procedure;

5. Check the minimum and maximum CO rates;- Adjust if necessary as indicated in Section 14.3

page 29).

(

29 (Fig. 1) the boiler will re-attempt

2 values and gas

14.3 Adjusting the CO2

1. Remove the casing panel as described in Section 18.1 (page 41);

2. Connect a manometer to the inlet test nipple on the gas valve, turn on a hot tap and ensure the inlet working pressure is 20mbar. If correct proceed as follows;

3. Turn on the combustion analyser, remove the combustion test point plug into the test point;

4. Turn on a hot tap and ensure that the boiler is firing.

5. Access the setting menu by pressing the and keys for 5 seconds the icon will be shown in the

display;

6. Press the menu button four times to access Menu 5 and press the setting button once to switch the

output of the boiler to maximum (two digits will be flashing

indicating the temperature of the boiler). There will be a cursor at the top of the display indicating the boiler is at maximum output. If the cursor is at the bottom of the

display (indicating minimum output) press the button the change to maximum output;

7. If necessary adjust the screw on the gas valve (Fig. 40) to set the CO (LPG);

8. Press the setting button once to set the combustion control rate mode to minimum, and, if necessary, adjust the screw on the gas valve to set the CO

0.2% (NG) or 9.7% +/- 0.2% (LPG);

Press the setting button rate control mode to maximum and if necessary adjust the screw on the gas valve to set the CO2 to 8.9% +/-

0.2% (NG) or 9.2%

10.Reassemble in reverse order.

Q (Fig. 39) and insert the analyser probe

2 to 8.9% +/- 0.2% (NG) or 9.7% +/- 0.2%

2 to 8.9% +/-

again to set the combustion

+/- 0.2% (LPG);

14.4 Gas Conversion

To convert from Natural Gas (G20) to LPG (G31), it is

ecessary to insert a diaphragm and restrictor between the

n gas valve and air/gas arm.

Once the conversion has been made, the CO need to be checked as described in Section 14.3, for LPG the CO2 reading should be 10% +/- 0.2% with the front case

itted).

f To convert from LPG (G31) to Natural Gas (G20), it is

necessary to remove the diaphragm and restrictor from between the gas valve and air/gas arm. Once the conversion has been made, the CO need to be checked as described in Section 14.3, for NG the

2 reading should be 9.2% +/- 0.2% (with the front case

CO fitted).

2 setting will

Adjustment screw

Fig. 40

14.5 Range rating the maximum heating power

To adjust the maximum heating power it is necessary to access the settings menu by pressing the and buttons together for five seconds, and proceed as follows;

1. Press the menu button 3 times to access Menu 4;

2. Press the button to access Menu 4.9;

3. The value is adjustable between 0 and 10, 0 being the minimum output and 10 being the maximum, please refer to the chart on page 32 (Fig. 43) for the required setting;

4. The maximum central heating output can now be adjusted by pressing the setting button ;

5. To exit the setting mode, do not press any buttons for 1 minute, the boiler will automatically exit the Setting Menu.

Fig. 39

14.6 Fitting the external sensor

The external sensor should be fitted 1.5 meters above the floor on a North to North West facing wall.

To connect the external sensor, it is first necessary to remove the casing panel as described in Section 18 (page

41);

Remove the PCB cover as described in Section 18.4 and connect the external sensor as described in Section 18.5 (page 50).

14.7 External sensor and ambient sensor set-up (where fitted)

N.B.

o ensure that these parameters are set correctly, consult the

T "thermo-regulation help" document enclosed with the documentation folder.

14.8 Completion

For the Republic of Ireland 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. In addition it is necessary to complete the Commissioning Checklist in Section 24 of this manual (Page 60).

14.9 Operational checks

The system must be visually checked for soundness;

2. Fill the condensate trap with water, by pouring 1/ litre of water into the exhaust flue connector (see Fig. 39). N.B. In the event of a prolonged period of system shutdown, the condensate trap should be filled before any renewed use. A shortage of water in the trap could possibly lead to a temporary leakage of fumes into the air, until it refills itself;

3. Ensure that the flue is fitted correctly;

4. Allow the central heating system to warm up and adjust the central heating temperature control knob check the burner modulates between the high and low settings;

5. Range rate the thermal power for central heating as detailed in Section 14.5. To adjust the maximum heating power it is necessary to follow the steps in Section 14.5 Menu 4. and adjust in relation to the chart on Page 35

(Fig. 42);

6. Check the gas rate; Record the finding in the Benchmark Commissioning

7. Checklist (Page 59);

8. Run the domestic hot water and adjust to the correct water flow rate, adjust the domestic hot water temperature control knob modulates between the high and low settings;

30 (Fig.1) to ensure the burner

31 (Fig.1),

Fig. 41

9. Balance the central heating system until all return temperatures are correct and equal;

10. Turn the boiler off by pressing the On/Off button (Fig.1) to OFF, disconnect the gas pressure gauge, retighten the screw and relight the boiler;

11. Re-examine the central heating, domestic hot water and old water supplies for soundness;

12. If external controls have been disconnected, reconnect and test;

13. Refit the boiler casing.

14. Commissioning and testing (continued)

Central Heating Output average (kW) (30/50°C)

24 kW

30 kW

123

789

Steps (Value P min - P max - Menu 4)

9,2

11,4

13,6

15,8

20,2

22,4

24,6

26,8

6.8

8.6

10.4

12.2

15.8

17.6

19.4

21.2

14.10 Instructing the end user

. Hand over these instructions and explain how to use the

time clock and room thermostat (if fitted) and explain how

o register the guarantee;

2. Show the end user how to switch the appliance off quickly, and indicate the position of the electric supply

solator;

. Inform the end user of the location of all drains, isolating

valves and air vents;

4. Explain how to turn the appliance off for both short and long periods and advise on the precautions necessary to prevent damage in the event that the appliance is inoperative when freezing conditions occur;

5. Instruct the end user on the correct procedure for checking and refilling the boiler;

6. Finally advise the end user that, for continued safe and efficient operation, the appliance must be serviced by a competent person at least once a year and the service logged in the Service Interval Record (Page 60).

Fig. 42

15. Fitting the casing

Fitting the casing

Remove the protective film on the casing:

- Locate the lower clips into the slots in the chassis

- Engage hooks

- Fit the top of the panel in place Close the panel mounting clamps (Fig. 44)

Screw in the two clamp locking bolts

ote: it is essential to refit both locking bolts A

N on the casing in notches R on the side panels M operation (Fig. 43)

Fig. 43

Fig. 44

16. Sequence of operation

Central Heating Mode

Activation of the time clock and/or room thermostat starts the boiler. The display panel indicates the flow temperature s in central

eating as illustrated below:

Central heating

ode

Room thermostat contact ON

ith the boiler in rest, the diverter valve is in the domestic hot water position, activation of the central heating changes the

W position of the motorised valve head, moving the diverter valve into the central heating position.

The start of the pump is delayed for 7 seconds to allow the movement of the diverter valve. The PCB checks the pressure of the primary circuit, if the pressure measured is 0.8 bar or lower, the boiler will lockout after 40 seconds. The error code appear on the LCD and the pump will stop.

If the pressure measured is above 0.8 bar, the boiler ignition sequence will begin. At first, the fan starts and the speed increases to the required ignition speed (3460 rpm), once this speed has been achieved, the

safety coil of the gas valve is supplied with 230V DC, after 8 seconds the boiler checks that the burner has lit, if the boiler does not sense that the burner has lit, the error code relight two more times (20 seconds between each attempt). After this, should the boiler still not sense a flame, error code appear on the LCD.

Should the boiler detect that the burner has lit, the boiler continues to regulate as follows.

E04 will appear on the display, should this error occur, the boiler will attempt to

E02 will

A03 will

The NTC fitted on the outlet of the primary circuit exchanger is the only NTC to adjust the heat output of the boiler according to the adjustable setting point. This point is adjustable from 25°C to 85°C by the user. This NTC relays information to the PCB, which in turn modulates the burner by adjusting the speed of the fan.

When the NTC senses that the set temperature has been achieved (+ 4°C to the temperature set by the user), the burner will go out. To avoid excessive burner lighting, an anti-cycle timer can be set between 0 to 7 minutes in menu Adjustments and Settings).

The speed of the pump can be set at two levels. The PCB controls the speed of the circulation pump depending on the speed set in menu modulate between high and low speed depending on the ∆T between the inlet and the outlet. If the ∆T is greater than 20°C the pump will run on high speed and if the ∆T is less than 20°C the pump will run on low speed.

4 line 41. Setting 410 will cause the pump to operate continually at high speed, and setting 411 will cause the pump to

OTE:THE DEFAULT SETTING FOR THE PUMP IS HIGH SPEED.

4 line 48 (see Section 17

17. Adjustments and settings

1010

1111

1212

1313

1414

1515

1616

1717

1818

1919

2020

2121

2222

2323

2424

1212

The boiler is delivered with pre-set values described

n menus 3 and 4.

i All settings must only be changed by the installer or

qualified person. To gain access to the setting

a buttons please, open the front control panel cover

and follow the instructions below.

On/Off push button

DISPLAY

Menu button - button

2nd digit 1st digit

+ button

Reset push button

Setting button

3rd digit 4th digit

Pressing the, comfort, reset, menu, +, -, or setting buttons will make the display light. The light will go out 30 seconds after the last button has been pressed. To gain access to the setting menus press and buttons together for 5 seconds.. Menu 1 is displayed on the 1st digit.

Changing the menu :

Press the Menu button . The menu number is displayed for 3 seconds. Press the menu button to change to the next menu

Setting a parameter in a section :

Press the or button to change from between sections. Note : When you arrive at the last section of a menu, pressing the button will change to the the 1st section. When you are at the first section, pressing the button will change to the last section of the menu.

Changing section in a menu (available only for menu 3,4,5 and 6) :

Press the setting button to enter the modification mode, The 3rd and 4th digits will be flashing, press the or button to select the correct value then press the setting button to select this modification and to exit the setting mode. The 3rd and 4th digit stop flashing.

Recalling the basic configuration :

Select menu 3,4,5 or 6 then press the and buttons together for more than 5 seconds. The digits will flash CM for a while to indicate that the operation is completed.

Clearing Menu 1 (default register) :

Select menu 1 then press the

and

to indicate that the operation is completed.

Note : To exit install mode, press the Menu button for at least 3s. If no button is pressed for about 1 minute, the display

returns to user mode

buttons together for more than 5 seconds. The digits will flash

CM for a while

CTION

ONFIGURATION

ISPLAY

5 ”

x times

once

Menu - 1 - Default register

Record the last 10 defaults

ection

Last default occured 1 0 code from 01 to 99

ast but one default occurred

Last default occurred before the previous one

ote --is displayed if no default is recorded

igit 1

1 1 c

1 .

1 9 code from 01 to 99

igit 2

igit 3 and 4

ode from 01to 99

Menu - 2 - Boiler conditions

Indicates the conditions or the configurations of the boiler

Section Digit 1 Digit 2 Digit 3 and 4

x times

Software version of display PCB 2 0 code from 01 to 99

Software version of main PCB 2 1 code from 01 to 99

Flue type 2 2 4 : Condensation

Fan speed (in hundreds of rpm) 2 3 from 01 to 99

Theoretical position of the 3 way valve System plus only

DHW flow temperature in °C 2 5 from 01 to 99

CH flow temperature in °C 2 7 from 01 to 99

CH return temperature in °C 2 8 from 01 to 99

Outside temperature in

2 4

2 9 from 01 to 99

0 : DHW

1 : CH

CTION

once

ONFIGURATION

Menu - 3 - Boiler options

Rubrique Elément 1 Elément 2 Elément 3 et 4

Inactive 3 0 --

DISPLAY

setting

Factory

x times

DHW thermostatic kit

itted to boiler?

f (fix DHW temp to 65°C)

Optional programmer action 3 2

Inactive 3 3 --

Inactive 3 4 --

DHW Delay (time before CH relight

after a DHW cycle)

Inactive 3 7 --

3 1

1: on reheating of tank

3 5

0 : non

1 : oui

on heating and

reheating of tank

2: on the heating

0 to 5 mn by step

0,5 mn

CTION

once

x times

ONFIGURATION

Menu - 4 - Boiler settings

Section Digit 1 Digit 2 Digit 3 and 4

Stop pump after burner stops 4 0

Pump speed 4 1

0 :

1 : yes

0 : High speed

1 : Adaptive

DISPLAY

setting

Factory

Pump post circulation duration 4 2

Inactive 4 3 Maximum Central Heating flow

temperature Minimum Central Heating flow

temperature Inactive 4 6

Inactive 4 7

CH anti-cycling delay 4 8

CH maximum output (range rating) 4 9

4 4

4 5

0 to 5 min by step

0.5 min

50° to 85°

by steps of 1°

25° to 50°

by steps of 1°

0 to 7 min by step

0.5 min

Value from 0 to 10

Pmin & Pnominal

CTION

ONFIGURATION

Menu - 5 - Combustion rate control mode

Effect Display

DISPLAY

once

x times

ombustion rate control mode OFF

Combustion rate control mode ON The main exchanger temperature

appears on the display. The digit - on the display shows the gas

utput level.

o (Top = maxi, bottom = mini).

Gaz output setting To modify the gas output use + and -

buttons.

To cancel the combustion rate control mode press button “Menu”.

The combustion rate control mode will be inactive when :

- boiler is in stand by mode

- heating mode with room thermostat and initial heating temperature reaches max. heating recommendation

- boiler in lockout mode

- after the default settings have been restored or if the main supply fails (power cut)

- if the operator exits the 5th menu

- after 5 minutes if no buttons are pressed

Note : As soon as the combustion rate control mode is active, the Central Heating and Domestic Hot Water

control knobs become inactive.

CTION

ONFIGURATION

DISPLAY

once

x times

Menu - 6 - Thermo-regulation settings

ection

ype of control

Compensation 6 1

Slope 6 2

igit 1

6 0

igit 2

igit 3 and 4

0: Heating setting can be

adjusted by the user

1: Variable heating setting

depending on the external

temperature

2: Variable heating setting

depending on the room

temperature (Clima Manager)

: Variable heating setting

depending on the external and

room temperatures (Clima

Manager)

If or

00 to 20 in intervals of 1

If or

0.3

0.5

1.0

1.2

1.5

2.0

2.5

3.0

setting

Factory

Parallel shift 6 3

Inactive 6 4 Inactive 6 5 0 Inactive 6 6 Inactive 6 7 Inactive 6 8 Inactive 6 9

* Available only with Clima Manager

N.B.

To ensure that these parameters are set correctly, consult the "thermo-regulation help" document enclosed with the documentation folder.

If or

from - 20 to 20 in intervals of 1

17. Adjustements and Setting (continued)

H anti cycling delay setting :

If you would like to change the setting of CH anti cycling delay, if you want 3 mn ,please proceed as follow :

(note : the factory setting is 2 mn 30 seconds and the following explanation refer to menu 4 section 8)

Display

witch to installer mode, press button

and for 5 seconds, the display shows : default in the default register.

Press 3 times on menu button to

gain access to menu shows :

Change for section 8 (CH anti cycling

delay), press on button side times , the display shows : (factory setting 2 mn 30 s)

4 = menu 4 8 = section 8

2.5 = 2,5 mn (2 mn 30 secondes)

10=0 if there is no

4, the display

40=0 or 40=1

48=2.5

5 ”

x 3

x 8

Press on setting button one time, the 3rd and 4th digits flash together, Then press on to change the CH anti cycling delay, the display shows : 48=3.0 press on setting button 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

P (fig. 48)

door

SERVICING INSTRUCTIONS

To ensure efficient safe operation, it is recommended that the boiler is serviced annually by a competent person, refer to Section 20 (page 53) for the Servicing Schedule.

Before starting any servicing work, ensure both the gas and electrical supplies to the boiler are isolated and the boiler is

ool.

Before and after servicing, a combustion analysis should be made via the flue sampling point.

fter servicing, preliminary electrical system checks must be

A carried out to ensure electrical safety (i.e. polarity, earth

ontinuity, resistance to earth and short circuit).

IMPORTANT! AFTER AN ANNUAL SERVICE, THE SERVICE INTERVAL RECORD (SECTION 25, P

18. Replacement of parts

AGE

60) M

UST BE COMPLETED

Fig. 45

The life of individual components vary and they will need servicing or replacing as and when faults develop. The fault finding sequence chart in which component is the cause of any malfunction, and instructions for removal, inspection and replacement of the individual parts are given in the following pages.

Section 19 will help to locate

18.1 To Gain General Access

All testing and maintenance operations on the boiler require the control panel to be lowered. This will also require the removal of the casing.

18.1.1 Removing the front panel :

1. Remove the security screw and unlock the two case

locking catches A (see Figs. 45 & 46);

2. Remove the front panel from the rest of the casing (see Fig. 47).

18.1.2 Lowering the control panel :

1. Remove the front panel;

Fig. 46

Fig. 47

2. Unlock the two clamps locking and pivot the electrical box downward (see Fig. 48).

Fig. 48

18.2 Access to the Combustion Chamber

18.2.1 Removing the air gas assembly

olate the gas supply to the boiler;

1.Is

2. Carry out step 18.1.1;

3. Remove the silencer (Fig. 49);

Fig. 49

6. Unplug the gas valve and fan connectors (Figs. 53 and 54);

4. Disconnect the detection electrode

able (Fig. 50);

Fig. 50

5. Remove the earth cable from the ignition electrode (Fig. 51), and remove the ignition electrode cable from the ignitor (Fig. 52)

Fig. 51

Fig. 53

7. Unscrew the 4 nuts D on the combustion chamber (Fig. 55);

Fig. 55

8. Unscrew the gas valve nut E (Fig. 56);

Fig. 52

Fig. 54

9. Remove the air gas assembly and combustion chamber front (Fig. 57);

10. Reassemble in reverse order.

Fig. 56

Fig. 57

18.2.2 Removing the burner

o not remove the burner unless absoluly necessary.

arry out step 18.1.1 and18.2.1

1.C

(without removing the 4 nuts D);

2. Remove the 3 screws F from the air/gas manifold (Fig. 58)

;

3. Slide the burner out from the front,

Fig. 58 Fig. 60

18.2.3 Removing the detection electrode

1. Carry out step 18.1.1;

2. Disconnect the detection electrode

cable (Fig. 61);

3.Remove the 2 screws G from the

taking care not to damage the insulation (Fig. 59a 24 kW & 59b

0 kW);

Fig. 59a

Fig. 59b

electrode manifold (Fig. 62);

4. Reassemble in reverse order and hecking all seals are undamaged

c and the burner is positioned

orrectly (Fig. 60).

c If necessary, replace the insulation too.

4. Pull the electrode from the combustion chamber (Fig. 63);

5. Reassemble in reverse order.

Fig. 61

18.2.4 Removing the ignition electrode

1. Carry out step 18.1.1;

2. Remove the earth cable from the

electrode (Fig. 64);

Fig. 62 Fig. 63

3. Remove the electrode cable H from the ignitor (Fig. 65);

4. Unscrew the 2 screws I on the electrode (Fig. 66);

Fig. 64 Fig. 65 Fig. 66

18.2.5 Removing the fan

1. Carry out step 18.1.1;

emove the air gas manifiold as in

2.R

step

18.2.1 (Fig. 67);

3. Unscrew the two screws from the

enturi

v valve (Fig. 68);

nd remove with the gas

J a

4. Unscrew the three screws K on the ir/gas pipe and remove (Fig. 69);

5. Reassemble in reverse order.

Fig. 67 Fig. 68 Fig. 69

18.2.6 Removing the gas valve

1. Carry out step 18.1.1;

2. Remove the air gas manifiold as in

18.2.1 (Fig. 70);

3. Unscrew the three screws L on the

air/gas pipe and remove (Fig. 71);

4. Unscrew the three screws holding

the gas valve on the venturi (Fig.

72);

Fig. 70

5. Remove the gas valve from the venturi. (Fig. 73)

6. Reassemble in reverse order;

7. The gas valve settings will need to

be adjusted (see Section 14.3 page

28);

8. Reinstate the gas supply and test for tightness on reassembly.

;

Fig. 71

Fig. 72

Fig. 73

18.2.7 Removing the heat exchanger

arry out step 18.1.1

1.C

2. Remove the air gas manifiold as in

8.2.1(Fig. 74)

Fig. 74

5. Remove the two bolts securing the exchanger (Fig. 76)

;

emove the flow pipe clip and

3.R

unscrew the pump nut (Fig. 75a &

5b);

Fig. 75a

Fig. 75b

6. Remove the screw M2; then rotate clockwise the bearing frame (Fig. 77);

emove the flow and return pipes

4.R

and the condense drain pipe from

he heat exchanger. (Fig. 75c);

Fig. 75c

7. Remove the heat exchanger by slightly rotating. (Fig. 78);

8. Reassemble in reverse order.

Fig. 76

18.2.8 Removing the spark generator

1. Carry out step 18.1.1;

2. Disconnect the ignition electrode,

live, neutral and earth cables from the ignitor (Fig. 79)

;

Fig. 77

3. Remove the screw N from the ignitor and remove (Fig. 80);

4. Reassemble in reverse order.

Fig. 78

Fig. 79

Fig. 80

18.3 Access to the Water Circuit

Important! Before any component is removed, the boiler must be drained of all water.

18.3.1 Drain down

Close the flow and return isolating valve and open the pressure relief valve.

8.3.2 Removing the 3 way valve

1. Carry out step 1.2.1 and 1.2.3;

2. Remove the clip “Q1” from the by-pass tube (see fig. 87);

emove the clip “Q2” and “Q3” from the heating return and the pump

3.R

4. Remove the two T25 screws “P1” (see fig. 87);

5. Remove the 3 way valve body pulling it toward you (see fig. 90);

6. Reassemble in reverse order;

(see fig. 88 & 89);

Fig. 87

Fig. 90

18.3.3 Removing the 3 way valve shutter

1. Carry out step 1.2.1 and 1.2.3;

3. Remove the 3 way valve shutter

2. Unscrew the two CHC screws

R”(see fig. 91);

“

Fig. 88

Fig. 86

Fig. 89

4. Reassemble in reverse order;

pulling it up (see fig. 92)

fig. 91

fig. 92

18.3.5 Removing the pump

1. Carry out step 18.1.1;

2. Lower the electrical box cover as in step 18.1.2;

3. Remove the PCB cover;

emove the pump plug from the control board and

4.R

earth plug from earth socket (see Fig. 93);

Fig. 93

5. Remove the clip S2 on the pump volute (see Fig. 95);

4. Unscrew the pump nut (see Fig. 94);

Fig. 94

6. Pull the pump toward you and remove the clip S3 securing the pressure gauge (see Fig. 96);

7. Reassemble in reverse order.

Fig. 95

18.3.6 Removing the pressure relief valve

1. Carry out step 18.1.1 and 18.3.1;

2. Remove the clip securing the valve (see Fig. 97) and

pull it toward you;

3. Reassemble in reverse order; take care to ensure the valve is in the correct position;

Fig. 96

Fig. 97

18.3.7 Removing the expansion vessel

1. Carry out step 18.3.1;

solate the gas supply and disconnect all

2.I

pipe connections;

3. Remove the boiler from the wall

4. Unscrew the nut U (see Fig. 98);

ull the expansion vessel to remove it (see Fig. 99)

5.P

6. Reassemble in reverse order.

;

Fig. 98

18.3.8 Removing the overheat thermostat

1. Remove the casing as in step 18.1.1;

2. Pull off the thermostat connections. Then

remove the thermostat from the pipe by releasing it’s securing clip (see Fig. 100).

Fig. 99

18.3.9 Removing the temperature sensors (N.T.C’s)

1. Remove the casing as in step 18.1.1;

2. Pull off the NTC connections. Then

remove the NTC from the pipe by releasing it’s securing clip (see Fig. 101).

Fig. 100

Fig. 101

18.3.10 Removing the pressure gauge

arry out step 18.4.6

1.C

emove the pressure gauge by releasing the two clips

2.R

;

V and pulling the pressure gauge out. (see Fig. 102)

Fig. 102

18.3.11 Removing the water pressure switch

1. Remove the casing as in step 18.1.1;

2. Pull off the connections. Then remove the pressure

switch by releasing it’s securing clip (see Fig. 103).

Fig. 103

18.3.12 Removing & cleaning the condensate trap

1. Unscrew the cap of the condensate trap (see Fig. 104)

Fig. 104

2. Empty the condensate products and rinse the condensate trap with clean water (see Fig. 105)

3. Reassemble in reverse order and fill the condensate trap with 1/2 litre of water before restarting the boiler.

Fig. 105

18.4 Access to the Control System

18.4.1 Removing the P.C.B.s

1. Carry out steps 18.1.1 and 18.1.2;

2. Remove the screw W1 from the electrical box (see

Fig. 106);

Fig. 106

3. Release the three clips W2 and remove the electrical box cover (s

ee Fig. 107);

Fig. 107

4. Remove the two screws W3 from the front control anel and lower the front control panel (see Fig.

;

108)

5. Remove all electrical connections from the display CB (see Fig. 109

;

Fig. 108

6. To remove the display PCB, remove the two screw W3 and lift the PCB out (see Fig. 110);

7. Reassemble in reverse order;

Fig. 110

ig. 109

8. To remove the main PCB disconnect all electrical connections and remove the two screws W5 (see Fig. 111); Do not forget to swap the EEPROM button when removing the old PCB in order to replace it on the new one.

9. Reassemble in reverse order.

18.4.2 Removing the fuses

1. Carry out step 18.4.1;

2. Remove the fuses “X” (see Fig. 112)

3. Reassemble in reverse order.

OTE:FUSE RATING = 2AMP FAST FUSE

Fig. 112

Fig. 111

18.5 Connecting the external sensor

1. Reach to the main PCB as in step 18.4.1;

2. Install the interface module supplied in the kit

on the main PCB (see Fig. 113)

3. Connect the wires between the external sensor and the interface (see Fig. 113).

Fig. 113

19. Incorrect function

n case of problem, or when the boiler has displayed an error code, the display flashes 2 digits. Please refer to the table below

I to diagnose the fault.

For faults 01 and 03, press the reset button

Overheating lock out

FAULT

A appears on the display, the boiler is locked and the reset button illuminates (28). To reset the boiler

29.

Fig. 114

Code

A A 37 A 39 A 40 A 41 E 02 E 04 E 05 E 06 E 07 E 08 E 09 E 10 E 11 E 12 E 13 E 14 E 15 E 16 E 18 E 20 E 29 E30 E33 E 37 E 38

Fault description

Overheating lock out / Heat exchanger thermo fuse No flame after safety timer 3 "flames in progress" disappearances in 1 operating cycle CPU fault MCU fault 1 MCU fault 2 Fan error Pump protect (display after 40s.) No flame detection Anti freezing system, pump on Anti freezing system, pump and burner on No water circulation in primary circuit No water in the primary circuit DHW sensor open circuit DHW sensor short circuit Flow sensor open circuit Flow sensor short circuit Return sensor open circuit Return sensor short circuit Outdoor sensor open circuit (if fitted) Outdoor sensor short circuit (if fitted) Flame lift Flame detect with gas valve off Communication problem with offset unit Communication problem with offset unit Floor heating thermostat open circuit (if fitted) (ROOM THERMOSTAT FLOOR) Communication problem with the main PCB Reset button pressed 5 times in 15 minutes

20. Gas conversion

f the boiler is not set for the gas type, converson kits are available. To convert the boiler, please use exclusively MTS parts and

I proceed as it is mentioned in the instruction manual provided with the conversion kit.

21. Incorrect function

Fault Cause Solution

ontrol gas, water and electrical

he boiler doesn’t start

Red indicator alight

Noises in CH system

No gas, no water or no

lectricity

e Air in the gas pipe Purge the air from the gas pipe Room thermostat switched off Turn the room thermostat up

Overheat lockout (A01) No flame after safety time (A03) No flame detected (E04) Flame lift (E18)

Air presence in CH system or. Insufficient pressure

supply, fuses…

Wait for a few minutes Press the reset button and the boiler attempts to re-light. If the red indicator lights too frequently, please call your local service centre.

Purge the system of air (Section 14.2, page 28) and increase the system pressure (Section 2, page 6)

29 (Fig. 114) the red led goes out

Radiators rise in temperature During summer season

If after A01 fault and with cold boiler, The boiler doesn’t start

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

Gravity effect in the CH system

Overheat lockout (A01)

Close the heating flow isolating valve (41 Fig. 2, page 5). Don’t forget to open it again before starting the heating.

Check the thermo fuse on the right top on the heat exchanger. With an open thermo fuse, a replacement of all the heat exchanger is required.

22. Maintenance Instructions

22.1 General remarks

It is recommended that the following inspections be carried

ut on the boiler at least once a year;

1. Check the seals in the water group, and if necessary, replace the gasket and restore the seal to perfect working order;

2. Check the seals in the gas group, and if necessary replace the gaskets and restore the seal to perfect working order;

3. Visually check the overall condition of the boiler;

4. Visually check the combustion, and if necessary,

isassemble and clean the burner;

5. Following inspection 3, disassemble and clean the combustion chamber as necessary;

6. Following inspection 4, disassemble and clean the injector, if necessary;

7. Clean the primary heat exchanger. (see Section 22.2);

8. Check and adjust the CO Section 14.3);

9. Check the correct operation of the heating safety devices:

- Overheat thermostat

10.Check the correct operation of the flow switches;

11.Check the correct operation of the low pressure switch;

12.Check the diverter valve movement;

13.Check the correct operation of the gas group safety devices:

- absence of gas or flame safety device (ionisation);

14.Check that the electrical connections are correct (as described in Section 13);

emissions as necessary (see

22.2 Cleaning the primary exchanger

Cleaning the exhaust side

Remove the air gas assembly (Section 18.2.1). Check that

he exhaust passages are free, if there are deposits present,

t clean the exchanger with compressed air or wash with water or a vinegar based detergent.

Cleaning the water side

Use detergents that dissolve CaCO3. Leave to act for a

hort time and then rinse.

22.3 Operational test

Make sure that the detergent does not remain inside the exchanger.

Unscrew the lower part of the condensate trap and clean it. Fill it with water and replace.

After carrying out the maitenance operation, fill the heating circuit to a pressure of approximately 1.5 bar and release the air from the system. Also fill the domestic hot water system.

- Place the boiler in operation.

- If necessary, release the air again from the heating system.

- Check the settings, seals and the correct functioning of the system for expelling the products of combustion and drawing combustion air.

- Check the settings and correct operation of all the control, regulation and monitoring components.

- Check that the burner ignites properly and carry out a visual check of the burner flame.

- Check that the 3 bar safety valve is operating correctly.

- Check the operation of the time control and room thermostat (if fitted).

EXHAUSTIVE

NOT

OTE:THESE

CHECKS

ARE

15.Check the efficiency of the production of domestic hot water (test the flow rate and temperature rise);

16.Carry out a general inspection of the boiler;

17.Check the flue and termination point;

18.Remove any oxide from the detection electrode by using an emery cloth.

Key N

Description

Manf. Pt. N

Other

Type

Manf. date

from to

23. Short spares list

103

101

539

543

615

110 112

111

401

407

0100 BURNER ASSEMBLY

0101 B

URNER 24KW

BURNER 30KW 60000293

0103 SOUPAPE 60000295 0110 IGNITION ELECTRODE 61317432 0111 IONIZATION ELECTRODE 60000312 0112 GASKET D:85-66.5-2.5 61314753

60000292

554

537

502

506

531

532

538

624

616

649

24 30

SYSTEM A

FF FF

0400 GAS SECTION

0401 GAS VALVE 61307584 NAT

GAS VALVE 61310129 NAT

0407 FAN ASSY 61314434

0500 HYDRAULIC BLOCK

0502 MOTOR - THREE-WAY VALVE 61302483 0506 VALVE KIT 61311597 0531 AIR SEPARATOR HEAD ASSEMBLY 61304608 0532 GASKET KIT 61304618 0537 PRESSURE RELIEF VALVE 61312668 0538 PUMP + AIR SEPARATOR 15/50 61301964

PUMP + AIR SEPARATOR 15/60 61303461

0539 OVERHEAT THERMOSTAT 100°C 61010572 277783 0543 STOPPED WATER THROTTLE 61311745 0554 PRESSURE SENSOR 0.8b 61310364

0600 ELECTRICAL BOX

0615 PRINTED CIRCUIT BOARD 60000284 0616 PRINTED CIRCUIT BOARD 60000176 0624 PRINTED CIRCUIT BOARD 61314958

0649 PRESSURE GAUGE 61313561

.. ..

24. Technical data

Model

CE certificate 1312-BP-4083 1312-BP-4084 Performance category **** **** NoX class 5 5 Category II2H3P II2H3P Heating output 80°C/60°C kW 5 to 21 6 to 27 Heating output 50°C/30°C kW 6 to 23 7 to 29

Variable cylinder heating power PN max kW

Nominal gas flow rate (15°C-1013 mbar) min max min max Central Heating and cylinder heating (gas flow rate) Qn kW 5,5 22 25 6,5 28 30 G20 (NG H - Lacq) 34,02 MJ/m3under 20 mbar Vr m3/h G31 (propane) 46,4 MJ/kg under 37 mbar Vr kg/h 0,43 1,71 1,94 0,50 2,17 2,33 Membrane Diameter (mm)/marking G20 mm without without G31 propane mm 4,4 4,6

Adjustable heating outlet temperature °C 25 to 85 25 to 85

24 kW 30 kW

25,1 30,2

0,58 2,33 2,65 0,69 2,96 3,17

Central heating minimum flow rate l/h 300 300 Central heating circuit maximum pressure Pw max bar

Central heating expansion vessel capacity L 6 8 Expansion vessel inflation pressure bar 0,7 0,7 Electric voltage 230 volt, single phase-50 Hz 230 volt, single phase-50 Hz Electrical input power W 150 150 Electrical protection IP 44 IP 44

Mass flow rate for combustion products 11,5 13,5 Fume temperature (60-80) °C 67 67 Fume temperature (30-50) °C 60 60 CO2 G20 CO2 G31 % 10 10 Flue duct type C13 C33 C43 C53 B23 C13 C33 C43 C53 B23

3 3

9 9

25. Benchmark Commissioning Checklist

ENCHMARK No.

GAS BOILER COMMISSIONING CHECKLIST

BOILER SERIAL

. NOTIFICATION No.

CONTROLS T

TIME & TEMPERATURE CONTROL TO HEATING ROOM T/STAT & PROGRAMMER/TIMER PROGRAMMABLE ROOMSTAT TIME & TEMPERATURE CONTROL TO HOT WATER CYLINDER T/STAT & PROGRAMMER/TIMER COMBI BOILER

EATING ZONE VALVES

H HOT WATER ZONE VALVES FITTED NOT REQUIRED THERMOSTATIC RADIATOR VALVES FITTED AUTOMATIC BYPASS TO SYSTEM FITTED NOT REQUIRED

o comply with the Building Regulation, each section must have a tick in one or other of the boxes

FITTED

OT REQUIRED

FOR ALL BOILERS CONFIRM THE FOLLOWING

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

FOR THE CENTRAL HEATING MODE, MEASURE & RECORD

GAS RATE m3/hr ft3/hr BURNER OPERATING PRESSURE ( IF APPLICABLE) N/A mbar CENTRAL HEATING FLOW TEMPERATURE °C CENTRAL HEATING RETURN TEMPERATURE °C

FOR COMBINATION BOILERS ONLY

HAS A WATER SCALE REDUCER BEEN FITTED? YES NO WHAT TYPE OF SCALE REDUCER HAS BEEN FITTED

FOR THE DOMESTIC HOT WATER MODE, MEASURE & RECORD

GAS RATE m3/hr ft3/hr MAXIMUM BURNER OPERATING PRESSURE (IF APPLICABLE) N/A mbar COLD WATER INLET TEMPERATURE °C HOT WATER OUTLET TEMPERATURE °C WATER FLOW RATE

FOR CONDENSING BOILERS ONLY CONFIRM THE FOLLOWING

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

FOR ALL INSTALLATIONS CONFIRM THE FOLLOWING

THE HEATING AND HOT WATER SYSTEM COMPLIES WITH CURRENT BUILDING REGULATIONS THE APPLIANCE AND ASSOCIATED EQUIPMENT HAS BEEN INSTALLED AND COMMISSIONED IN ACCORDANCE WITH THE MANUFACTURER’S INSTRUCTIONS IF REQUIRED BY THE MANUFACTURER, HAVE YOU RECORDED A CO/CO2 RATIO READING? THE OPERATION OF THE APPLIANCE AND SYSTEM CONTROLS HAVE BEEN DEMONSTRATED TO THE CUSTOMER THE MANUFACTURER’S LITERATURE HAS BEEN LEFT WITH THE CUSTOMER

N/A

YES CO/CO

2 RATIO

Its/min

COMMISSIONING ENG’S NAME PRINT CORGI ID N°.

SIGN DATE

26. Service Interval Record

SERVICE INTERVAL RECORD

It is recommended that your heating system is serviced regularly

and that you complete the appropriate Service Interval Record Below.

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

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

SERVICE 1DATE

NGINEER NAME

OMPANY NAME

C TEL No. CORGI ID CARD SERIAL No. COMMENTS

SIGNATURE

SERVICE 3DATE

ENGINEER NAME COMPANY NAME TEL No. CORGI ID CARD SERIAL No. COMMENTS

SIGNATURE

SERVICE 5DATE

ENGINEER NAME COMPANY NAME TEL No. CORGI ID CARD SERIAL No. COMMENTS

SERVICE 2DATE

NGINEER NAME

OMPANY NAME

C TEL No. CORGI ID CARD SERIAL No. COMMENTS

SIGNATURE

SERVICE 4DATE

ENGINEER NAME COMPANY NAME TEL No. CORGI ID CARD SERIAL No. COMMENTS

SIGNATURE

SERVICE 6DATE

ENGINEER NAME COMPANY NAME TEL No. CORGI ID CARD SERIAL No. COMMENTS

SIGNATURE

SERVICE 7DATE

ENGINEER NAME COMPANY NAME TEL No. CORGI ID CARD SERIAL No. COMMENTS

SIGNATURE

SERVICE 9DATE

ENGINEER NAME COMPANY NAME TEL No. CORGI ID CARD SERIAL No. COMMENTS

SIGNATURE

SERVICE 8DATE

ENGINEER NAME COMPANY NAME TEL No. CORGI ID CARD SERIAL No. COMMENTS

SIGNATURE

SERVICE 10DATE

ENGINEER NAME COMPANY NAME TEL No. CORGI ID CARD SERIAL No. COMMENTS

SIGNATURE

TERMS AND CONDITIONS OF GUARANTEE

Please read these terms and conditions which are in addition to any terms and conditions detailed in this book or any registration card supplied with your appliance.

charge will be made to the owner of the appliance if:

∑ The reason for any service visit is as a direct result

f a failure to install the appliance in accordance

o with the manufacturer’s instructions.

∑ Your installer does not complete the necessary

commissioning process and procedure as detailed in the Installation and Operating Instructions.

∑ Your appliance is not serviced on or before the 12

month anniversary of installation - this only applies to appliances with a 2 and 5 year guarantee.

∑ Our service engineer calls as requested and the

failure is a non-manufacturing defect.

Failure to pay an invoice for any such occurence assumed by MTS that you accept that your appliance has not been installed correctly and understand that any

will be

manufacturer’s guarantee has been withdrawn. On the 12 month anniversary of the appliance installation, you must have it serviced to continue any

uarantee offered into the following year. Failure to do

will invalidate your guarantee and should an MTS

so engineer be required to attend and no proof of service documentation is made available, then MTS

As part of the commissioning process, it is a legal requirement to register all boiler installations or replacements with CORGI. Upon registration a “Certification Number” will be issued followed by a “Declaration of Safety” Certificate. MTS (GB) Ltd cannot be called upon to carry out any work under the manufacturer’s guarantee without proof of registration. The registration number must be quoted when requesting a service visit, and the “Declaration of Safety” Certficate subsequently shown to the service engineer. If the certificate is not made available, the engineer will not work on the appliance and a wasted call charge will be made.

If you have a problem with commissioning on installation, please contact our

will charge.

Technical Department on 0870 241 8180

Please remove the completed boiler

commissioning checklist sticker from the

front of the boiler and place in this box

for customer reference

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: MTS (SA) - France

Commercial subsidiary: MTS

MTS Hughenden Avenue High Wycombe Bucks HP13 5FT Telephone: (01494) 755600 Fax: (01494) 459775 internet: www.mtsgb.itd.uk E-mail: info@mtsgroup.com

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

(GB) Limited

Building

420010029000 - 03/2006

Ariston A 30 RFF, A 24 RFF User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual