Ariston microSYSTEM 15 RFFI User manual

Users
Manual

2
Dear Customer,
Thank you for choosing an ARISTON boiler.
We guarantee that your boiler is a reliable
and technically sound product.
This User's Manual provides detailed
instructions and recommendations for proper
installation, use and maintenance.
Remember to keep thismanual in a safeplace
for future reference i.e. by the gasmeter.
Your local MTS Servicing Centre is at your
complete disposal for all requirements.
The guarantee on thisappliance is
valid for 12 monthsfrom the first
day of installation.
Repairsto the electric, hydraulic or
gascircuits may be carried out only
by your local authorised MTS
Servicing Centre.
Every attempt hasbeen made to avoid
errorsof any kind
in thisUser'sManual, the Management
invitescustomersto inform
of any inaccuracies which they may find.
Thiswill help to improve our service

TABLEOFCONTENTS
1. GENERAL INFORMATION page 4
Technical Information page 5
Control Panel page 6
2. OPERATING INSTRUCTIONS page 7
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. 3

4
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. Youcan check your installer
is CORGI registered by calling CORGI direct
on :- [phone].
This is an appliance for the production of
central heating. This appliance must be used
only for the purpose for which it is designed.
The manufacturer declines all liability for
damagecaused 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
thevalveof thegascylinder 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 gascylinder 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”.

TECHNICAL INFORMATION
5
GENERALDATA
Heating input max-min
Heating output max-min
Efficiency at Maximum Thermal Capacity
(see Installation Instructions)
CENTRALHEATING
Operating Temperature max-min
Maximum-Minimum Heating Pressure
Built-in expansion vessel - Total capacity
ELECTRICALDATA
Electrical Supply/ Frequency
Power Consumption
Protection of Electrical System
CATEGORY
Nominal Pressure/ MethaneGas(G20)
Nominal Pressure/ Liquid Gas(G30-G31)
kW
kW
%
°C
bar
litres
V/ Hz
W
IP
mbar
mbar
15.4
14.1
82.4
82-42
3-0.7
6
230/ 50
115
X4D
20
30-37
11.6
10.5
81.3
82-42
3-0.7
6
230/ 50
105
X4D
20
30-37
15 kW
10 kW 22.7-10.0
21.0-8.7
83.7
82-42
3-0.7
6
230/ 50
105
X4D
20
30-37
21 kW 29.8-12.0
27.8-10.5
84.2
82-42
3-0.7
6
230/ 50
155
X4D
20
30-37
28 kW

6
CONTROL PANEL
10 RFFI / 15 RFFI
21 RFFI / 28 RFFI FR011A

2. OPERATING INSTRUCTIONS
CAUTION
Installation, start-up, adjustments and
maintenance must be performed by a
competent person only, in accordance
with the current GasSafety (Installation &
Use) Regulations and the instructions
provided. Improper installation may
cause damage or injury to individuals,
animalsand 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 hasbeen corrected by
a competent person.
7
LEGEND:
A- On/ Off button
B- On/ Off L.E.D. green (frost
protection active)
C- Central Heating button
D- Cental Heating active
L.E.D. green
E- Ignition failure (lockout)
and/ or overheat reset button
F- Ignition failure (lockout) and/ or
overheat L.E.D. red
G- Central heating temperature
adjustment
H- Energy Saving System (ESS)
I- Knock-out for time clock
J- Heating system pressure gauge

8
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 “J”, make sure
that the pressure is between 1.0 and 1.5
bar (the blue part on the gauge) when the
systemisoff and cool. Consultyour installer
for checking and refilling the system if the
pressure value isunder 1.0 bar.
J
- 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 polishesmust 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 scale reducer be
added to the system so as to reduce the
formation of limescale in the boiler heat
exchanger. This will ensure that the
efficiency of the unit remains the same
over time, reducing gas consumption
UT013Af

Ignition procedure
Push the button “A” the green L.E.D. “B”
will illuminate indicating that the boiler is
supplied with electricity.
Push the button “C” the green L.E.D. “D”
will illuminate indicating that the boiler is
operating for central heating production.
9
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.
B
A
C
D
UT013Aa
UT013Ab

10
E
F
The centralised electronic control unit will
ignite the burner, without any manual
intervention but in response to the request
for 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. “F” illuminates. To reset
the ignition system, the reset button “E”
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.
Adjusting the heating
It is possible to set the temperature of the
heating system by adjusting the knob “G”
between 1 and 5 until the stop on the
“ECO” position. This will vary temperature
from approximately 40˚C to about 65˚C.
To obtain a higher temperature it is
necessary to turn theEnergy Saving System
(ESS) screw “H” clockwise with a small
coin. The knob is now free to turn to the
MAX position,
which represents
a temperature of
about 80°C.
G
UT013Ac
UT013Ad