Ariston GENUS 27 RFFI SYSTEM Bedienungsanleitung

Installation Instructions

Type C Boilers

G.C.N: 41-116-01

47-116-20

LEAVE THESE INSTRUCTIONS

ADJACENT TO THE GAS METER

Country of destination: GB

2B004

TABLE OF CONTENTS 1. GENERAL INFORMATION

1.1 General Instructions

1.2 Technical Information

1.3 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 Removing the Casing

3.3 Control 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 Ariston Unvented Cylinder

B004

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 installa-

tion, 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 negli-

gent 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 carriyng out main-

tenance.

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 seal of water connections, replacing the gaskets if necessary.

2- Check the seal of the gas connections, replacing the gaskets if necessary.

1. GENERAL

INFORMATION

User’s

Manual

1.1 General Information

004A

4B004

3- Check the general condition of the appliance and of the combustion

chamber visually.

4- Visual check of the combustion: clean burners if necessary.

5- With reference to point 3, dismantle and clean the combustion chamber if

necessary.

6- With reference to point 4, dismantle and clean the injectors if necessary.

7- Visual check of the primary heat exchanger:

- check for overheating of the exchangers fins;

- clean the exhaust side of the exchanger and fan if necessary.

8- Regulate the gas pressure, ignition pressure, partial flame, maximum flame.

9- Check proper operation of the heating safety system:

- maximum safety temperature;

- maximum safety pressure.

10 - Check the proper operation of the gas safety system:

- gas or flame safety device;

- gas valve safety device.

11 - Check that the electrical connections have been made in compliance with

the instructions shown in the Installation Instructions.

12 - Check the efficiency of the hot water supply (flow and temperature).

13 - Check general operation of the appliance.

14 - Check the exhaust system for the combustion products.

B004

GENUS 30 MFFI

Legen :

1. Flue Connector

2. Combustion Chamber Hood

3. Main Heat Exchanger

4. Combustion Chamber Insulation Panel

5. Burner

6. Expansion Vessel

7. Overheat Thermostat

8. Spark Generator

9. Diverter Valve (MFFI)

Motorised Valve (RFFI)

10. Main Circuit Temperature Probe

11. Main Circuit Flow Switch

12. Domestic Hot Water Temperature Probe

13. Diverter Valve Microswitch

14. Filter Seat

15. Drain Valve

16. Secondary Heat Exchanger

17. Safety Valve (3 bar)

18. Circulation Pump with Automatic Air Release Valve

19. Gas Valve

20. Detection Electrodes

21. Ignition Electrodes

22. Fan

23. Venturi

24. Air Pressure Switch

GENUS 27 RFFI SYSTEM

Fig. 1.1

1.2 Overall View

005A 006A

6B004

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 startup 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 installe by a competent installer in accor-

ance with the 1984 Gas Safety (installation & use) Regulations (as

amen e )

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

requirements of the 1984 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 per-

son 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 an installation

within a cupboard

This appliance is not suitable for outdoor installation.

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

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

the appliance is installe ) can be installe 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. INSTALLATION

2.1 Reference Stan ar s

2.2 Siting the Appliance

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

B004

Legen :

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”)

F = Cylinder Flow (3/4”)

G = Cylinder Return (3/4”)

2.3 Overall Dimensions

890

385

(A-B-D-E)

(C)

465

99 99

132 67 65

155

208

(F - G)

(A-D-E)

(C)

AF CDGE

GENUS 30 MFFI

GENUS 27 RFFI SYSTEM

In order to allow for access to the interior of the boiler for maintenance purposes, the

boiler must be installed in compliance with the clearance requirements indicated in the

diagram below.

400

300

450

60 60

110197

160

2.4 Clearances

min 300 - max 350

GENUS 30 MFFI GENUS 27 RFFI SYSTEM

Fig. 2.1

Fig. 2.2

002A

007A

008A

009A

010A

8B004

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 con-

nection kit and the flue kit.

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 data

table (1.2), 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)

2.5 Mounting the Appliance

2.6 Electrical Connection

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 locat-

ed within the control panel, as follows:

- The yellow-green wire should be connected to the terminal marked with the

earth 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 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 elec-

trical isolation of the appliance, by the use of a fused double pole isolator hav-

ing 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. 2.3

2.7 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.

011A

B004

2.8 Water Connections

Legen

A = Central Heating Flow

B = Domestic Hot Water Outlet

C = Gas Inlet

D = Domestic Cold Water Inlet

E = Central Heating Return

F = Cylinder Flow

G = Cylinder Return

I = 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.

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 downwards 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.

B D E

D E

GENUS 30 MFFI GENUS 27 RFFI SYSTEM

View of the Boiler Connections

Fig. 2.4

Fig. 2.5

Fitting the connection kit to the

Genus 27 RFFI System only.

It will be noted that the kit has two con-

nections not required for this boiler i.e.

the domestic cold inlet “E”and the

domestic hot water outlet “B”(see fig.

2.4).

Although the cold water main supply

must be connected to the isolation valve

for the purpose of operating the filling-

loop, the isolation valve is NOT connect-

ed to the boiler and should be left in the

OFF position.

The D.H.W. outlet is capped-off on the

boiler, therefore not requiring the isola-

tion valve to be used.

The Genus 27 RFFI System has 2 x 3/4"

B.S.P. male threads for the cylinder flow

and return. It is recommended that 2 x

22mm x 3/4" female iron fittings (not sup-

plied) be used on these connections

(using P.T.F.E. tape), before the boiler is

mounted on the wall.

012A

014A

013A

10 B004

Resi ual Hea of the Boiler

27/30 kW

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 7 l (1.5 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 and initial filling (in accordance with Water Supply Byelaw

14), is provided as an intergal part of the connection kit (see fig. 2.5). The

flexible hose must be removed once the system has been filled. The D.H.W.

inlet valve on the connection kit has two postions, one for winter and one for

the summer. This enables the flow-rate through the appliance to be adjusted

so that a sensible D.H.W. temperature may be achieved throughout the year.

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.

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 out-

house 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 discoloura-

tion that might occur on buildings in the vicinity.

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

nal.

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.

015A

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