Ariston MicroGENUS 23 MFFI Bedienungsanleitung

Installation

Instructions

Type C Boilers

G.C.N: 47-116-14

47-116-15

LEAVE THESE INSTRUCTIONS

WITH THE END-USER

Country of destination: GB

TABLE OF CONTENTS 1. GENERAL INFORMATION

1.1 GENERAL INSTRUCTIONS

1.2 OVERALL VIEW

2. INSTALLATION

2.1 REFERENCE STANDARDS

2.2 SITING THE APPLIANCE

2.3 OVERALL DIMENSIONS

2.4 CLEARANCES

2.5 MOUNTING THE APPLIANCE

2.6 ELECTRICAL CONNECTION

2.7 GAS CONNECTION

2.8 WATER CONNECTIONS

2.9 FLUE CONNECTION

2.10 ROOM THERMOSTAT CONNECTION

2.11 ELECTRICAL/SYSTEM DIAGRAMS

2.12 WATER CIRCUIT DIAGRAMS

3. COMMISSIONING

3.1 INITIAL PREPARATION

3.2 CONTROL PANEL

3.3 REMOVING THE FRONT PANEL

3.4 INITIAL START UP

3.5 OPERATIONAL ADJUSTMENTS

3.6 COMBUSTION ANALYSIS

3.7 FUME DISCHARGE MONITORING

3.8 BOILER SAFETY SYSTEMS

3.9 DRAINING THE SYSTEM

4. GAS ADJUSTMENTS

GAS ADJUSTMENT TABLE

4.1 CHANGING THE TYPE OF GAS

5. MAINTENANCE

6. MISCELLANEOUS

6.1 WIRING DIAGRAM FOR TWO HEATING ZONES

6.2 WIRING DIAGRAM FOR CONNECTION TO AN ARISTON UNVENTED CYLINDER

7. TECHNICAL INFORMATION

This manual is an integral and essential part of the product. It should be kept

with the appliance so that it can be consulted by the user and our authorised

personnel.

Please carefully read the instructions

and notices about the unit contained in

this manual, as they provide important

information regarding the safe

installation, use and maintenance of

the product.

For operating instructions please

consult the separate User’s Manual.

Read the instructions and recommendations in these Installation Instructions

carefully to ensure proper installation, use and maintenance of the appliance.

Keep this manual in a safe place.You may need it for your own reference while

our Servicing Centre technicians or your installer may need to consult it in the

future.

This is a combined appliance for the production of central heating (C.H.) and

domestic hot water (D.H.W.).

This appliance must be used only for the purpose for which it is designed.

The manufacturer declines all liability for damage caused by improper or

negligent use.

No asbestos or other hazardous materials have been used in the fabrication of

this product.

Before connecting the appliance, check that the information shown on the data

plate and the table on pages 4-5 comply with the electric, water and gas mains

of the property.You will find the data plate on the reverse of the control panel.

The gas with which this appliance operates is also shown on the label at the

bottom of the boiler.

Do not install this appliance in a damp environment or close to equipment

which spray water or other liquids.

Do not place objects on the appliance.

Do not allow children or inexperienced persons to use the appliance without

supervision.

If you smell gas in the room, do not turn on light switches, use the telephone or

any other object which might cause sparks.

Open doors and windows immediately to ventilate the room.

Shut the gas mains tap (on the gas meter) or the valve of the gas cylinder and

call your Gas Supplier immediately.

If you are going away for a long period of time, remember to shut the mains gas

tap or the gas cylinder valve.

Always disconnect the appliance either by unplugging it from the mains or

turning off the mains switch before cleaning the appliance or carrying out

maintenance.

In the case of faults or failure, switch off the appliance and turn off the gas

tap. Do not tamper with the appliance.

For repairs, call your local Authorised Servicing Centre and request the use of

original spare parts. For in-guarantee repairs contact MTS (GB) Limited.

Check the following at least once a year:

1 - Check the seals for the water connections; replacement of any faulty seals.

2 - Check the gas seals;replacement of any faulty gas seals.

3 - Visual check of the entire unit.

4 - Visual check of the combustion process or analysis of combustion by-

products (see section 3.6) and cleaning of the burner if needed.

1. GENERAL

INFORMATION

1.1 GENERAL INSTRUCTIONS

CO034A

5 - If called for by point.3, dismantling and cleaning of the combustion

chamber.

6 - If called for by point.4, dismantling and cleaning of the burner jets.

7 - Visual check of the primary heat exchanger:

- check for overheating in the blade assembly;

- clean the exhaust fan if needed.

8 - Adjustment of the flow rate of the gas:flow rate for lighting, partial load and

full load.

9 - Check of the heating safety systems:

- safety device for maximum temperature;

- safety device for maximum pressure.

10- Check of the gas safety systems:

- safety device for lack of gas or flame ionisation (detection

electrode);

- safety device for gas cock.

11- Check of the electrical connection (make sure it complies with the instructions

in the manual).

12- Check of domestic hot water production efficiency (flow rate and temperature)

13- General check of the combustion by-products of the discharge/ventilation

system.

14- Check of the general performance of the unit.

LEGEND:

1. Flue connector

2. Air intake for twin pipe flue systems

3. Fan

4. Combustion chamber hood

5. Main heat exchanger

6. Safety thermostat

7. Combustion chamber

8. Combustion chamber insulation panel

9. Burner

10. Detection electrode

11. Ignition electrodes

12. Motorised diverter valve

13. Main circuit temperature probe

14. Main circuit flow switch

15. Domestic hot water temperature probe

16. Gas valve

17. Spark generator

18. Domestic hot water flow switch

19. Domestic cold water inlet filter

20. Secondary heat exchanger

21. Circulation pump with automatic air release valve

22. Safety valve (3 bar)

23. Expansion vessel

24. Air pressure switch

25. Combustion analysis intakes

1.2 OVERALL VIEW

FIG. 1.0

IN013A

The technical information and instructions provided herein below are

intended for the installer so that the unit may be installed correctly and

safely.

The installation and initial start up of the boiler must be by a CORGI

Approved Installer in compliance with the installation standards currently in

effect, as well as with any and all local health and safety standards i.e..

CORGI .

This appliance must be installed by a competent installer in

accordance with current Gas Safety (installation & use)

Regulations.

The installation of this appliance must be in accordance with the relevant

requirements of the current Gas Safety (installation & use) Regulations, the

Local Building Regulations, the current I.E.E. Wiring Regulations, the

byelaws of the local water authority, and in Scotland, in accordance with the

Building Standards (Scotland) Regulation and Health and Safety document

No. 635 “Electricity at work regs. 1989”.

Installation should also comply with the following British Standard Codes of

Practice:

The appliance may be installed in any room or indoor area, although

particular attention is drawn to the requirements of the current I.E.E. Wiring

Regulations, and in Scotland, the electrical provisions of the Building

Regulations applicable in Scotland, with respect to the installation of the

combined appliance in a room containing a bath or shower.

Where a room-sealed appliance is installed in a room containing a bath

or shower the boiler and any electrical switch or appliance control,

utilising mains electricity should be situated so that it cannot be

touched by a person using the bath or shower.

The location must permit adequate space for servicing and air circulation

around the appliance as indicated in paragraph 2.4.

The location must permit the provision of an adequate flue and termination.

For unusual locations special procedures may be necessary.

BS 6798-1987 gives detailed guidance on this aspect.

A compartment used to enclose the appliance must be designed specifically

for this purpose. No specific ventilation requirements are needed for the

installation within a cupboard.

This appliance is not suitable for outdoor installation.

The type C appliances (in which the combustion circuit, air vent intake

and combustion chamber are air-tight with respect to the room in

which the appliance is installed) can be installed in any type of room.

There are no limitations with respect to ventilation and the volume of the

room itself.The boiler must be installed on a solid, permanent wall to prevent

access to the electrical parts (when live) through the aperture on the back

frame.

2.1 REFERENCE STANDARDS

2. INSTALLATION

Low pressure

pipes BS 6891 1988

Boilers of rated input

not exceeding 60 kW BS 6798 1987

Forced circulation hot

water system BS 5449 1990

Installation of gas hot water

supplies for domestic purposes

( 2nd family gases) BS 5546 1990

Flues BS 5440-1 1990

Air supply BS 5440-2 1989

2.2 SITING THE APPLIANCE

For safety purposes, have a competent person carefully

check the electrical system in the property, as the

manufacturer will not be held liable for damage caused by

the failure to earth the appliance properly or by anomalies

in the supply of power. Make sure that the residential

electrical system is adequate for the maximum power

absorbed by the unit, which is indicated on the rating plate.

In addition, check that the section of cabling is appropriate

for the power absorbed by the boiler.

The boiler operates with alternating current, as indicated in

the technical information table section in 6, where the

maximum absorbed power is also indicated. Make sure

that the connections for the neutral and live wires

correspond to the indications in the diagram. The

appliance electrical connections are situated on the

reverse of the control panel (see the servicing manual for

further information)

IMPORTANT!

In the event that the power supply cord must be changed,

replace it with one with the same specifications. Make the

connections to the terminal board located within the

control panel, as follows:

- The yellow-green wire should be connected to the

terminal marked with the “”symbol; make sure to re-

use the ferrule mounted on the other supply cord;- The

blue wire should be connected to the terminal marked “N”;

- The brown wire should be connected to the terminal

Fasten the boiler in place using the template and anchors

supplied with the unit. It is highly recommended that a

spirit level be used to position the boiler so that it is

perfectly level.

For additional information, please consult the instructions

contained in the connection kit and the flue kit.

2.7 ELECTRICAL CONNECTION

2.5 MOUNTING THE APPLIANCE

LEGEND:

A = Central Heating Flow (3/4”)

B = Domestic Hot Water Outlet (1/2”)

C = Gas Inlet (3/4”)

D = Domestic Cold Water Inlet (1/2”)

E = Central Heating Return (3/4”)

2.3 OVERALL DIMENSIONS

In order to allow for access to the interior of the boiler for

maintenance purposes, the boiler must be installed in

compliance with the minimum clearances indicated in FIG. 2.2

2.4 CLEARANCES

FIG. 2.1

FIG. 2.2

FIG. 2.3

QT002A

DM004A

VR001A

VIEW OF THE BOILER CONNECTIONS

LEGEND:

A = Central Heating Flow

B = Domestic Hot Water Outlet

C = Gas Inlet

D = Domestic Cold Water Inlet

E = Central Heating Return

F = Safety Valve

CENTRAL HEATING

Detailed recommendations are given in BS 6798:1987 and BS 5449-1:1990,

the following notes are given for general guidance.

2.9 WATER CONNECTIONS

2.8 GAS CONNECTION The local gas region contractor connects the gas meter to the service pipe.

If the gas supply for the boiler 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 a smaller size than the

boiler inlet connection should not be used.

marked “L”.

Note:The diagrams for the electrical system are indicated in section 2.11.

Warning, this appliance must be earthed.

External wiring to the appliance must be carried out by a qualified technician

and be in accordance with the current I.E.E. Regulations and applicable

local regulations. The Genus range of boilers are supplied for connection to

a 230 V~ 50 Hz supply.

The supply must be fused at 3 A.

The method of connection to the electricity supply must facilitate complete

electrical isolation of the appliance, by the use of a fused double pole

isolator having a contact separation of at least 3 mm in all poles or

alternatively, by means of a 3 A fused three pin plug and unswitched

shuttered socket outlet both complying with BS 1363.

The point of connection to the Electricity supply must be readily accessible

and adjacent to the appliance unless the appliance is installed in a bathroom

when this must be sited outside the bathroom.

FIG. 2.4

FIG. 2.5 KT002A

SC008A

PIPE WORK:

Copper tubing to BS EN 1057:1996 is recommended for water pipes.

Jointing should be either with capillary soldered or compression fittings.

Where possible pipes should have a gradient to ensure air is carried

naturally to air release points and water flows naturally to drain taps.

The appliance has a built-in automatic air release valve, however it should

be ensured as far as possible that the appliance heat exchanger is not a

natural collecting point for air.

Except where providing useful heat, pipes should be insulated to prevent

heat loss and avoid freezing.

Particular attention should be paid to pipes passing through ventilated

spaces in roofs and under floors.

BY-PASS:

The appliance includes an automatic by-pass valve, which protects the main

heat exchanger in case of reduced or interrupted water circulation through

the heating system, due to the closing of thermostatic valves or cock-type

valves within the system.

SYSTEM DESIGN:

This boiler is suitable only for sealed systems.

Drain Cocks:

These must be located in accessible positions to permit the draining of the

whole system. The taps must be at least 15mm nominal size and

manufactured in accordance with BS 2870:1980.

SAFETY VALVE DISCHARGE:

The discharge should terminate facing downward on the exterior of the

building in a position where discharging (possibly boiling water & steam) will

not create danger or nuisance, but in an easily visible position, and not

cause damage to electrical components and wiring.

The discharge must not be over an entrance or a window or any other type

of public access.

AIR RELEASE POINTS:

These must be fitted at all high points where air naturally collects and must

be sited to facilitate complete filling of the system.

The appliance has an integral sealed expansion vessel to accommodate the

increase of water value when the system is heated.

It can accept up to 6 l (1.3 gal) of expansion water. If the heating circuit has

an unusually high water content, calculate the total expansion and add an

additional sealed expansion vessel with adequate capacity.

MAINS WATER FEED - CENTRAL HEATING:

There must be no direct connection to the mains water supply even through

a non-return valve, without the approval of the Local Water Authority.

FILLING:

A temporary method for initially filling the system and replacing lost water

during servicing in accordance with Water Supply Byelaw 14 must be

provided.

DOMESTIC WATER

The domestic water must be in accordance with the relevant

recommendation of BS 5546:1990. Copper tubing to BS EN 1057:1996 is

recommended for water carrying pipe work and must be used for pipe work

carrying drinking water.

RESIDUAL HEAD OF THE BOILER

VR003A

Ø60/100 mm

FIG. 2.7

The boiler is designed to be connected to a coaxial flue discharge system.

2.9 FLUE CONNECTIONS FLUE SYSTEM

The provision for satisfactory flue termination must be made as described

in BS 5440-1.

The appliance must be installed so that the flue terminal is exposed to outdoor air.

The terminal must not discharge into another room or space such as an

outhouse or lean-to.

It is important that the position of the terminal allows a free passage of air

across it at all times.

The terminal should be located with due regard for the damage or

discolouration that might occur on buildings in the vicinity.

In cold or humid weather water vapour may condense on leaving the flue

terminal.

The effect of such “steaming”must be considered.

If the terminal is less than 2 metres above a balcony, above ground or above

a flat roof to which people have access, then a suitable terminal guard must

be fitted. When ordering a terminal guard, quote the appliance model

number.

A suitable terminal guard is available from:

TOWER FLUE COMPONENTS

Morley Road

Tonbridge

KentTN9 1RA

The minimum acceptable spacing from the terminal to obstructions and

ventilation openings are specified in FIG. 2.6.

ERMINAL

OSTION

A - Directly below an open window or other opening 300

B - Below gutters, solid pipes or drain pipes 75

C - Below eaves 200

D - Below balconies or car-port roof 200

E - From vertical drain pipes and soil pipes 75

F - From internal or external corners 300

G - Above ground or below balcony level 300

H - From a surface facing a terminal 600

I - From a terminal facing a terminal 1200

J - From an opening in the car port

(e.g.door, window) into dwelling 1200

K - Vertically from a terminal in the same wall 1500

L - Horizontally from a terminal in the same wall 300

FIG. 2.6 FU010A

FU025A

FU002A

Ø80 mm

The components marked * in FIG 2.9 are present or absent

depending on the type of flue system used by the installer.

In addition, it is also possible to use a split (twin pipe)

system by fitting a special adaptor to the flue connector

and using the aperture for the air vent intake located on

the top part of the combustion chamber.

To utilise the air intake it is necessary to:

1. Remove the bottom of the air intake by cutting it with a

suitable knife (see FIG.2.8);

2. Insert the elbow into the air intake until it reaches the

lower end.(There is no need to use gaskets or sealing

componds).

IMPORTANT!

For all flue systems, a restrictor

must always be inserted into the

boiler’s flue connector; the

restrictor must be ø43 or ø41 in

diameter depending on the length

of piping indicated inTable 2.1.

The diagrams illustrate some of the

various designs for coaxial or twin

pipe flue systems.

For further information on

discharge/ventilation accessories,

see the FLUE PIPE ACCESSORIES

MANUAL.

COAXIAL SYSTEMS

FIG. 2.8

FIG. 2.9

FIG. 2.10

FU05A

FU004A FU006A

FU001A

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