Ariston MICROCOMBI 23 MFFI Manuale utente

Users

Manual

Dear Customer,

Thank you for choosing an ARISTON

boiler.

We guarantee that your boiler is a reliable

and technically sound product.

This Users Manual provides detailed

instructions and recommendations for

proper installation, use and maintenance.

Remember to keep this manual in a safe

place for future reference i.e. by the gas

meter.

Your local MTS Servicing Centre is at your

complete disposal for all requirements.

The guarantee on this appliance is

valid for 12 months from the first

day of installation.

Repairs to the electric, hydraulic

or gas circuits may be carried out

only by your local authorised MTS

Servicing Centre.

Every attempt has been made to avoid

errors of any kind

in this Users Manual, the Management

invites customers to inform

of any inaccuracies which they may find.

This will help to improve our service

TABLE OF CONTENTS

1. GENERAL INFORMATION page 4

Technical Information page 5

Control Panel page 6

2. OPERATING INSTRUCTIONS page 8

3. USEFUL INFORMATION

AND TROUBLESHOOTING page 12

4. MAINTENANCE page 15

5. CHANGE OF GAS TYPE page 15

6. TIME CLOCK page 15

IMPORTANT!

Please read this manual carefully.

For additional information, please consult the “Installation and

Servicing Instructions.”

Make sure to keep the manuals provided with the appliance so that they

can be used by the end-user, installer or our authorised engineer.

1. GENERAL INFORMATION

MTS (GB) Limited support the

initiative. Your installer will give you, and

show you how to use, a logbook which will

give you important information about your

boiler, and heating system. Please have

this logbook to hand whenever you

contact a service engineer or us.

All CORGI Registered Installers carry a

CORGI ID card, and have a registration

number. Both should be recorded in

your boiler Logbook. You can check

your installer is CORGI registered by

calling CORGI direct on :- (01256)

372300.

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.

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.

Before any intervention within the

boiler it is first necessary to cut off the

electrical power supply by turning the

external switch to “OFF”.

This manual may be kept in the front

panel of the boiler.

TECHNICAL INFORMATION

GENERAL DATA

Heating input max-min

Heating output max-min

Efficiency at Maximum Thermal Capacity (see

installation instructions)

CENTRAL HEATING

Operating Temperature max-min

Maximum-Minimum Heating Pressure

Built-in expansion vessel - Total capacity

DOMESTIC HOT WATER

Maximum-Minimum Temperature of

Water for Domestic Use

Working pressure max-min

Flow rate ∆T 35°C

Minimum flow rate

ELECTRICAL DATA

Electrical Supply/ Frequency

Power Consumption

Protection of Electrical System

CATEGORY

Nominal Pressure/Methane Gas (G20)

Nominal Pressure/Liquid Gas (G30-G31)

°C

bar

litres

°C

bar

l/min

gal/min

l/min

V/Hz

mbar

25.6-11.0

23.7-9.6

92.5

82-42

3-0.7

54-36

8-0.2

9.7

2.2

2.5

230/50

135

X4D

20-25

30-37

23 kW

CONTROL PANEL

23 MFFI

FR019A

LEGEND:

A- On/Off button

B- Central heating temperature adjustment

C- Domestic hot water temperature adjustment

D- Heating system pressure gauge

E- Time clock

F- Central heating selector

G- Central heating L.E.D. (green)

H- Fume sensor L.E.D. (yellow)

I- Overheat and/or ignition failure (lockout) L.E.D. (red)

J- Ignition failure (lockout) and/or overheat reset button

K- ON/OFF L.E.D. (green)

2. OPERATING INSTRUCTIONS

CAUTION

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. 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 or suspected that a

fault exists on the appliance, it must

not be used until the fault has been

corrected by a competent person.

HELPFUL SUGGESTIONS

To get the most out of your boiler, we

have provided you with some useful

advice on proper use and

maintenance:

- Periodically check the system

pressure using the pressure gauge

“D”, make sure that the pressure is

at 1.5 bar when the system is off and

cool. If the pressure is below the

minimum recommended value.

Consult your installer for checking

and refilling the system.

UT013Af

- The outer panels of the units case

must only be cleaned with a damp

cloth. Do not use abrasive cleaners.

The control panel can be wiped with

either a damp or dry cloth. Spray

polishes must not be used on the

control panel surface or knobs. Care

must be taken in preventing any

liquid entering the appliance.

PRACTICAL TIPS

- If the water is very hard, it is

recommended that a water softener

be added to the system so as to

reduce the formation of limescale in

the heat exchanger. This will ensure

that the efficiency of the unit remains

the same over time, reducing gas

consumption and maintenance

costs.

- If the boiler should be out of use for

a prolonged period, it is

recommended that the electrical

power supply be disconnected and

that the external gas cock be closed.

If low temperatures are expected,

the boiler and system pipe work

should be drained in order to prevent

frost damage.

- To improve comfort and take full

advantage of the heat produced by

the boiler, it is recommended that an

external (room) thermostat be

installed.

- It is good practice to clean and

service the appliance and central

heating system every year.

Call an Authorised Service Centre.

IGNITION PROCEDURE

Press button “A”. The green L.E.D.

“K” will illuminate

indicating that the boiler

is ready to operate. The

centralised electronic

control unit will ignite the

burner, without any

manual intervention but

in response to the

request for domestic hot water or

heating. If, after approximately 10

seconds, the burner has not ignited, the

boiler safety devices will shut off the

gas and the red L.E.D.

“I” illuminates. To reset

the ignition system, the

reset “J” must be

pressed and released.

Should the boiler fail to

ignite a second time,

check that the external gas cock is

open. If the problem persists, contact

an Authorised Service Centre.

WINTER AND SUMMER

OPERATING MODES

In the ‘winter operating mode’, the

boiler will produce both central heating

and domestic hot water.In the‘summer

operating mode’, the boiler will produce

only domestic hot water.

Press “F” button to

select winter mode. The

green L.E.D. “G” will

illuminate.

UT002A

UT003A

IUT006A

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