Ariston microSYSTEM Installation Instructions

Installation
Instructions
Type C Boilers

G.C.N: 41-116-06

41-116-07

LEAVE THESE INSTRUCTIONS
WITH THE END-USER

Country of destination: GB/IE

TABLE OF CONTENTS

1. GENERAL INFORMATION

1.1 GENERAL INSTRUCTIONS

1.2 OVERALL VIEW

2. INSTALLATION

2.1 DELIVERY

2.2 REFERENCE STANDARDS

2.3 SITING THE APPLIANCE

2.4 OVERALL DIMENSIONS

2.5 CLEARANCES

2.6 MOUNTING THE APPLIANCE

2.7 ELECTRICAL CONNECTION

2.8 GAS CONNECTION

2.9 WATER CONNECTIONS

2.10 FLUE CONNECTION

2.11 ROOM THERMOSTAT CONNECTION

2.12 ELECTRICAL DIAGRAMS

2.13 GAS AND WATER CIRCUITS

3. D.H.W. STORAGE CYLINDER

3.1 2 PORT AND 3 PORT VALVE INSTALLATIONS

3.2 DOMESTIC HOT WATER PRIORITY KIT

4. COMMISSIONING

4.1 INITIAL PREPARATION

4.2 CONTROL PANEL

4.3 REMOVING THE FRONT PANEL

4.4 INITIAL START UP

4.5 OPERATIONAL ADJUSTMENTS

4.6 COMBUSTION ANALYSIS

4.7 FUME DISCHARGE MONITORING

4.8 DRAINING THE SYSTEM

5. GAS ADJUSTMENTS

GAS ADJUSTMENT TABLE

5.1 CHANGING THE TYPE OF GAS

6. MAINTENANCE

7. TECHNICAL INFORMATION

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1. GENERAL

User’s
Manual

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.

1.1 GENERAL INSTRUCTIONS

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 an appliance for the production of central heating (C.H.).

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 in section 7 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 (at or adjacent to 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.

Check the following at least once a year:

1 - Check the seals for the water connections; replace any faulty seals.
2 - Check the gas seals; replace any faulty gas seals.
3 - Visual check of the entire unit.

3

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

products (see section 4.5) and cleaning of the burner if needed.

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 (overheat thermostat);

- safety device for maximum pressure (safety valve).

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- General check of the combustion by-products of the

discharge/ventilation system.

13- Check of the general performance of the unit.

FIG. 1.0

1.2 OVERALL VIEW

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. Detection electrode

10. Ignition electrodes

11. Burner

12. Regulation thermostat

13. Frost thermostat

14. Pump pressure switch

15. Safety valve (3 bar)

16. Automatic By-pass

17. Gas valve

18. Spark generator

19. Boiler drain valve

20. Circulation pump with automatic air release valve

21. Expansion vessel

22. Air pressure take-off point

23. Air pressure switch

24. Combustion analysis points

4

2. INSTALLATION

The technical information and instructions provided herein below are
intended for the installer / Servicing Technician so that the unit may be
installed and serviced correctly and safely.

2.1 DELIVERY

2.2 REFERENCE STANDARDS

There will be two items:
1 - The fully assembled boiler
2 - A separately boxed connection ki

WATER REGULATIONS

In GB it is necessary to comply with the Water Supply (Water Fittings)
Regulations 1999, for Scotland, The Water Bylaws 2000, Scotland. The Genus
30 Plus is an approved product under the Water Regulations.

To comply with the Water Regulations, you attention is drawn to The Water
Regulations guide published by the Water Regulations Advisory Scheme
(WRAS) gives full details of the requirements.

In IE, the requirements given in the current edition of I.S.813 and the current
Building Regulations must be followed.

The installation of this appliance must be in accordance with the relevant
requirements of the Local Building Regulations, the current I.E.E. Wiring
Regulations, the bylaws 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, the Local Building
Regulations (IE).

C.O.S.H.H.

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

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

BS 7593 Treatment of water in domestic hot water central heating

systems
BS 5546 Installation of hot water supplies for domestic purposes
BS 5440-1 Flues
BS 5440-2 Air supply
BS 5449 Forced circulation hot water systems
BS 6798 Installation of gas fired hot water boilers of rated input not

exceeding 60kW
BS 6891 Installation of low pressure gas pipe up to 28mm
BS 7671 IEE wiring regulations
BS 7074 Specification for expansion vessels
BS 5482 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

The following BS Standards give valuable information;

BS 5546 Installation of hot water supplies for domestic purposes
BS 5449 Forced circulation hot water systems
BS 7074 Specification for expansion vessels
BS 7593 Treatment of water in domestic hot water central heating

systems

5

WARNING!!

The addition of anything that may interfere with the normal operation of the
appliance without express written permission of the manufacturer or his
agent could invalidate the warranty. In GB this could also infringe the GAS
SAFETY(Installation and Use) REGULATIONS.

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 Building
Regulations, reference should also be made to the current ETCI rules for
electrical installation.

2.3 SITING THE APPLIANCE

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, in Scotland, the electrical provisions of the Building
Regulations applicable in Scotland, and in the Republic of Ireland, the
current edition of I.S.813, with respect to the installation of the combined
appliance in a room containing a bath or shower. The location of the boiler in
a room containing a bath or shower should only be considered if there is no
alternative.

Where a room-sealed appliance is installed in a room containing a bath
or shower reference should be made to the relevant requirements.

In GB this is the current I.E.E. WIRING REGULATIONS and BUILDING
REGULATIONS. In IE reference should be made to the current edition
of I.S.813 and the current ETCI rules.

If the boiler is to be sited into a timber framed building, reference must be
made to the current edition of the Institution of Gas Engineers Publication
IGE/UP/7 (Gas Installations in Timber Framed Housing).

The location must permit adequate space for servicing and air circulation
around the appliance as indicated in Section 2.5.
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.

Secondary ventilation is not required with this boiler. The boiler must be
installed on a solid, non-combustible, permanent wall to prevent access from
the rear.

6

E

L

N

132 132

C

E

400 mm

300 mm

60 mm

450 mm

FIG. 2.1

2.4 OVERALL DIMENSIONS

LEGEND:

A = Central Heating Flow (3/4”)
C = Gas Inlet (3/4”)
E = Central Heating Return (3/4”)
mm = Clearances

2.5 CLEARANCES

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. 2.1

2.6 MOUNTING THE APPLIANCE

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.

FIG. 2.2

2.7 ELECTRICAL CONNECTION

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 in section 7, 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 under the inspection cover
(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;

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

- The brown wire should be connected to the terminal

7

marked “L”.
Note: The diagrams for the electrical system are indicated in section 2.12.

Warning, this appliance must be earthed.

External wiring must be correctly earthed, polarised and in accordance with
relevant regulations / rules. In GB this is the current I.E.E. WIRING
REGULATIONS. In IE reference should be made to the current edition of the
ETCI rules. This boiler is supplied for connection to a 220 - 240 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 (see section 2.3).

2.8 GAS CONNECTION

2.9 WATER CONNECTIONS

FIG. 2.4

The local gas region contractor connects the gas meter to the service pipe.
The gas installation should be in accordance with the relevant standards. In
GB this is BS6891 and in IE this is the current edition of I.S.813. The
connection the the appliance is a 22mm copper tail located at the rear of the
gas service cock (FIG. 2.3). 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.

VIEW OF THE BOILER CONNECTIONS

G

F

A

C

E

FIG. 2.3

LEGEND:

A = Central Heating Flow
C = Gas Inlet
E = Central Heating Return
F = Safety Valve
G = Pump transportation screw

(remove before igniting the boiler)

H = Automatic By-pass pipe

8

H

SC004A