Ferroli Modena 80 E User Manual

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MODENA 80 E

COPPER WALL-MOUNTED COMBINATION,

GAS FIRED BOILER FOR CENTRAL HEATING

AND

DOMESTIC HOT WATER PRODUCTION,

FAN ASSISTED, ROOM SEALED COMPARTMENT,

ELECTRONIC FLAME IGNITION AND CONTROL

Appr. nr. B98.01 A - CE 0063 AT 4967

INSTALLATION, SERVICING AND

USER INSTRUCTIONS

G.C. NO: 47-267-05

3543230/2 - 10/99

MODENA 80 E

IMPORTANT

From the 1st October 1999 your "benchmark" Installation, Commissioning and Service Record Log Book will be enclosed in your customer information pack. "This record must be completed and left with the end user"

Ferroli is a member of the Benchmark initiative and fully supports the aims of the programme. Benchmark has been introduced to improve the standards of installation and commissioning of central heating systems in the UK and to encourage the regular servicing of all central heating systems to ensure safety and efficiency.

CE MARK

CE mark documents that the Ferroli gas appliances comply with the requirement contained in European

directives applicable to them.

In particular, the appliances comply with the following CEE directives and the technical specifications

provided from them:

• Gas appliances directive 90/396

• Efficiencies directive 92/42

• Low tension directive 73/23 (modified from the 93/68)

• Electromagnetic compatibility directive 89/396 (modified from the 93/68)

Year 2000 Compliance Declaration

We will guarantee that this products is altogether suitable for the data change in the Year 2000 (boiler has no dependence from date change) and that no disruptions will occur which is caused by this product.

INDEX

1. DESCRIPTION ....................................................................................................................................... 3

2. TECHNICAL AND DIMENSIONAL CHARACTERISTICS ...................................................................... 4

3. INSTALLATION DETAILS ....................................................................................................................... 9

4. COMMISSIONING AND TESTING ..................................................................................................... 22

5. ADJUSTMENT AND GAS CONVERSION ........................................................................................... 23

6. MAINTENANCE AND CLEANING ..................................................................................................... 25

7. REPLACEMENT OF PARTS ................................................................................................................. 27

8. FAULT FINDING .................................................................................................................................. 32

9. ELECTRICAL AND FUNCTIONAL SCHEME ....................................................................................... 39

10. USER INSTRUCTIONS ....................................................................................................................... 41

MODENA 80 E

1. DESCRIPTION

1.01 Introduction

The Modena 80 E is defined as a “room sealed” combination boiler, all air required for combustion is taken from outside the room in which it is installed. It is a new high performance gas fired heat generator for central heating and domestic hot water production. A special feature of this boiler is its built-in electronic flame ignition and control unit making burner operation completely automatic and safe. The main components are as follows:

• Copper heat exchanger consisting of three finned tubes specifically shaped for high efficiency.

• There are three copper coils inserted in the three heating circuit tubes. These represent the domestic hot water heat exchanger. Their shape and high exchange surface area enable the full output of the boiler to be absorbed.

• Ceramic fibre insulated combustion chamber

• 12 stainless steel bladed burners specifically designed for this boiler.

• Fan for discharge of combustion products and intake of combustion air.

• Differential air pressure switch. For safety reasons, this ensures the burner ignites only when the fan is functioning correctly.

• Hermetically sealed compartment made from corrosion-resistant steel enclosing the above components.

• Combination gas safety valve with modulator, complete with pressure stabiliser.

• Flowmeter giving the domestic hot water circuit precedence over the central heating circuit.

• Pressure relief valve for the central heating circuit set to open at 3 bar.

• Built-in Expansion vessel.

• Variable speed pump.

• Central heating flow temperature adjustment thermostat.

• Domestic hot water flow temperature adjustment thermostat.

• Central heating limit thermostat.

• Overheat safety thermostat.

• Electronic control unit for automatic flame ignition and control.

• Central heating low water pressure cut off switch.

• Domestic hot water flow temperature sensor.

• Central heating flow temperature sensor.

1.02 Instructions and regulations

Assembly, installation, first start up and maintenance must be carried out by competent persons only, in accordance with all current technical regulations and directives.

c.o.s.h.h.

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

Related Documents This appliance must be installed strictly in accordance with these instructions.

The Gas Safety Regulations (Installations & Use) 1996. The Local Building Regulations. The Building Regulations. The Buildings Standards (Scotland - Consolidated) Regulations.

British Standards Codes of Practice:

B.S. 7593 1992 TREATMENT OF WATER IN DOMESTIC HOT WATER CENTRAL HEATING SYSTEMS B.S. 5546 1990 INSTALLATION OF HOT WATER SUPPLIES FOR DOMESTIC PURPOSES B.S. 5440 PART 1 FLUES B.S. 5440 PART 2 AIR SUPPLY B.S. 5449 1990 FORCED CIRCULATION HOT WATER SYSTEMS B.S. 6798 1987 INSTALLATION OF GAS FIRED HOT WATER BOILERS B.S. 6891 1989 GAS INSTALLATIONS B.S. 7671 1992 IEE WIRING REGULATIONS B.S. 4814 1990 SPECIFICATION FOR EXPANSION VESSELS B.S. 5482 1994 INSTALLATION OF LPG

Model Water Bye Laws For Northern Ireland the rules in force apply

MODENA 80 E

2. TECHNICAL AND DIMENSIONAL CHARACTERISTICS

2.01 Technical information

Modena 80 E boilers are central heating and domestic hot water heat generators and are produced as standard

to function with natural gas or LPG.

175100

60 120280

16025

725

720

Distance between connections

100

Bottom view

460

Distance between connections

1149560609536

100

270

460

15012012070

Key

1 - 3/4" central heating flow outlet 2 - 1/2" domestic hot water flow outlet 3 - 1/2 “ gas inlet 4 - 1/2" domestic hot water inlet 5 - 3/4" central heating return inlet 6 - Pressure relief outlet

110

80 80

Top view

Fig. 1

Technical Data

MODENA 80 E

ssorgnodetaluclactupnitaeH

taeH

LEDOM

E08anedoM 8,327,98,525,116,828,210,825,218,325,18,0

LEDOM

E08anedoM "4/3"2/1"2/1"2/1"4/37136

LEDOM

E08anedoM03,1x2177,0x2137,2 00,2 G5014KV.H

tuptuo

WkWkWkWkWkWkWkWkWksertiLsertiL

12345 yticapaC

ШШШШШ sertiLrabrabrab

GN-02GGPL-13GGN-02GGPL-13G

ØØ m

taeH

tupni

snoitcenneClessevnoisnapxE

)mm(srotceyniniaM

GN-02GGPL-13G

.xaM.niM.xaM.niM

h/h/gk

)SCP(eulavtaeh

eulav

gnitaehlartnecrof

citsemoD

retawtoh

taeh

tupni

gnisirusserp-erP

srenrubniamotsetarwolfsaG

relioB retaw

stnetnoc

gnikrow.xaM

erusserp

lartnec

gnitaeh

tiucric

"2/1Ø

tohcitsemoD

tiucricretaw

stnetnoc

.xaM

gnikrow

toherusserp

tiucricretaw

evlavsaG

serusserpylppussaG gnitaehlartnecrofrenrubniamtaerusserpsaG

LEDOM

GN-02GGPL-13G

rabmrabmrabmrabmrabmrabmrab

E08anedoM 02735,28,118,70,633

muminimlanimonmuminimlanimon

tohcitsemoD

LEDOM

htiw∆∆

∆∆C°03t

∆

noitcudorpretaw

htiw∆∆

∆∆C°52t

∆

GN-02GGPL-13G

tohcitsemoD

noitcudorpretaw

GN-02GGPL-13G

gnikrow.xaM

citsemoderusserp

retawtoh

noitcetorP

level

evlavytefaS

thgieW

.nim/l.nim/lrabmrabmgk

E08anedoM3,116,318,110,6344PI83

N.B. - The gas pressures at the burner and gas flows during the central heating phase given in the table refer to nominal boiler output. To reduce this output (where necessary), gas pressure must be reduced until the required output level is reached (see figures 4 and 5).

During domestic hot water production, gas pressures to the burner must correspond to the maximum output given in table for the type of gas. Gas pressure must be adjusted during maximum draw-off of domestic hot water.

• Maximum working temperature for central heating flow: 85°C

• Maximum temperature of domestic hot water: 55°C, adjustable between 40°C and 55°C.

• Minimuum domestic cold water pressure required for 95% heat input:

- Flow restrictor fitted (standard) - 1,2 bar;

- Flow restrictor removed - 0,5 bar

MODENA 80 E

2.02 Boiler main components

132

818222

20 21

OUT

MIN

114

10 874 784 85 44

14 42 9 11

136

2.03 Boiler water flow diagram

FLUE

AIR

OUT

16 91

19 26

36 73

OUT

MIN

AIR

Fig. 2

98 63 157 14562

Key

5 Room sealed compartment 7 Gas inlet 8 Domestic hot water outlet 9 Domestic hot water inlet 10 Central heating flow outlet 11 Central heating return inlet 14 Safety valve 16 Fan 19 Combustion chamber 20 Burner assembly 21 Main injector 22 Burner 26 Combustion chamber insulation 27 Copper heat exchanger for central

heating and domestic hot water

28 Flue collector from heat exchanger 32 Central heating pump 34 Central heating flow temperature

sensor

C.H. OUT

36 Automatic air vent valve 42 Domestic hot water flow

temperature sensor

43 Air pressure switch 44 Gas valve 49 Safety overheat thermostat 50 Central heating flow limit

thermostat

56 Expansion vessel 62 Time clock (option) 63 Central heating temperature

adjustment

81 Ignition electrode 82 Sensor electrode 84 Primary gas valve solenoid 85 Secondary gas valve solenoid *90 Flue sampling point *91 Air sampling point 98 On/Off/Reset switch

D.H.W.

OUT

Fig. 3

GASIND.H.W.

C.H.

114 Low water pressure cut off

switch

132 Flue gas deflector 136 Flow meter 145 Central heating pressure gauge 157 Domestic hot water

temperature adjustment

* For use with flue gas analysis equipment

MODENA 80 E

2.04 Central heating adjustment (not normally required)

To adjust boiler heat input (thus also regulating heat output to the central heating water) simply adjust the main burner via the electronic control board (fig. 4 and 5). The diagrams indicate the variation in heat output to the water as burner working pressure is varied. Adjusting boiler output to the actual requirements of the central heating system will minimise boiler cycling thus saving fuel, varying the output has virtually no effect on the efficiency and combustion characteristics of the boiler.

Diagram of pressures and outputs with Natural gas

14 13

mbar

10 11 12 13 14 15 16 17 18 19 20 21 22 23 24

kW kcal/h

x 1000

8 9 10 11 12 13 14 15 16 17 18 19 20 21

Fig. 4

Diagram of pressures and outputs with LPG (Propane)

mbar

9 1011121314151617

kW kcal/h X 1000

91011121314 18192015 16 178

18 19 20 21 22 23

Fig. 5

2.05 Domestic hot water variability characteristics

The temperature of the domestic hot water can be varied

from 40 to 55°C by adjusting the boiler potentiometer.

Diagram of domestic hot water production

Fig. 6

Temperatura di erogazione sanitaria °C

40 39

Temp. entrata acqua sanitaria 15°C

Temperature of domestic hot water intake 15°C

0 345678910111213141516

Temperature of domestic hot water supply

Flow of domestic hot water L/

Portata sanitaria dm /min.

21 20 19 18 17 16 15 14 13 12 11 10 9 8 7

kcal/h

x1000

Boiler output exchanged kcal/

Potenza caldaia scambiata

MODENA 80 E

2.06 Pump characteristics

The pump head available for circulating the water is given in fig. 7.

N.B. - The pump is factory set at position 3. The pump is a Grundfos type 15-50 UPS series.

Note - Minimum flow through boiler heat exchanger at any time should not fall below 6 litres per minute.

If the total volume of water in the system exceeds 40 litres an additional expansion vessel must be fitted to the central heating return pipe.

Pump performance curve Grundfos UPS 15-50

1 2 3 Speed settings A Boilers pressure drop B Available pump head C.H.

Pressure loss diagram

SAFETY VALVE SETTING (bar)

VESSEL CHARGE PRESSURE (bar)

INITIAL SYSTEM PRESSURE (bar)

TOTAL WATER CONTENT of SYSTEM

LITRES

25 3.5 6.5 13.7 4.7 10.3 8.3 50 7.0 12.9 27.5 9.5 20.6 16.5

75 10.5 19.4 41.3 14.2 30.9 24.8 100 14.0 25.9 55.1 19.0 41.2 33.1 125 17.5 32.4 68.9 23.7 51.5 41.3 150 21.0 38.8 82.6 28.5 61.8 49.6 175 24.5 45.3 96.4 33.2 72.1 57.9

For syst. volumes other than those given above, mult. the syst. volume by the factor across

200 28.0 51.8 110.2 38.0 82.4 66.2

1.0 1.5 2.0 1.5 2.0 2.0

EXPANSION VESSEL VOLUME (litres)

0.140 0.259 0.551 0.190 0.412 0.33

mbar x 100

Fig. 8

3.0

0.5 1.0 1.5

m |h

0.5 1.5 2.512

SIZING OF ADDITIONAL EXPANSION VESSELS:

Deduct from the value given in the table the 8 litre vessel supplied.

Note:

1. Fill C.H. installation to min. 1.5 bar.

2. Select the expansion vessel for a system

pressure of 2.0 bar.

3. Expansion vessel must be fitted to central heating return pipe.

4. The standard 7 litre expansion vessel is charged to 1 bar.

5. The additional expansion vessel should be charged to 1 bar.

Fig. 7

MODENA 80 E

3. INSTALLATION DETAILS

Gas Safety (Installation & Use) Regulations: 1996

In the interest of safety, it is the law that all gas appliances are installed by a competent person in accordance with the above Regulations, Building Regulations/Building Standards Scotland, Codes of Practice, current I.E.E. Regulations and the byelaws of the Local Water Undertaking. Failure to comply with the Regulations may lead to prosecution; it is your responsibility to ensure that the law is complied with.

N.B. For Northern Ireland the rules in force apply.

Important - If the boiler is to be fitted in a timber framed building it should be fitted in accordance with the Institute

of Gas Engineers document IGE/UP/7. If in doubt advice should be sought from the Local Supplier.

Location of Boiler

The installation of the Modena 80E must be on a suitable non-combustible load bearing wall which will provide an adequate fixing for the boiler mounting bracket assembly. The location should be in an area where the water pipes will not be subjected to frost conditions. In siting the combination boiler the following limitations must be observed:

The combination boiler may be installed in any room or internal space, 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 combination boiler in a room or internal space containing a bath or shower.

Where a room sealed appliance is installed in a room containing a bath or shower any electrical switch or appliance control utilising mains electricity must be situated so that it cannot be touched by a person using the bath or shower.

Air Supply

The room or compartment in which the boiler is installed does not require a purpose provided vent when using the standard concentric flue.

Flue System

The boiler allows the flue outlet to be taken from the rear of the boiler, from either side or vertically. A standard flue length of 0.75 metres is provided. Alternative lengths of two or three metres can be supplied (equivalent to wall thicknesses of up to 565, 1815 and 2815mm for rear flues, deduct 91mm plus distance from side wall for side outlet flues). It is absolutely essential, to ensure that products of combustion discharging from the terminal cannot re-enter the building, or enter any adjacent building, through ventilations, windows, doors, natural air infiltration or forced ventilation/air conditioning.

Gas Supply

If necessary the local Gas supplier should be consulted, at the installation planning stage, in order to establish the availability of an adequate supply of gas. An existing service pipe must not be used without prior consultation with the Local Gas supplier. A gas meter can only be connected by the Local Gas supplier, or by a Local Gas suppliers Contractor. Installation pipes should be fitted in accordance with BS6891-1988. Appliance inlet working pressure must be 20mbar MINIMUM, for NG and 37 mbar minimum for LPG. Pipework from the meter to the combination boiler must be of an adequate size. The boiler requires 2.73m3/h of natural gas, and 2,00 kg/h of LPG. Do not use pipes of a smaller size than the combination boiler inlet gas connection. The complete installation must be tested for gas soundness and purged as described in BS6981-1988. All pipework must be adequately supported. An isolating gas valve is provided and should be fitted on the boiler gas inlet. Please wait 10 minutes when lighting from cold before checking gas rate. Gas pressures should be checked after the boiler has operated for 10 minutes to reach thermal equilibrium.

Water System

Note - the boiler is designed for sealed systems only and must NOT be used on open vented systems.

MODENA 80 E

Central Heating

Detailed recommendations are given in BS6798, BS5449, BS6700 and CP342 Part 2. Pipework not forming part of the useful heating surface should be insulated to prevent any heat losses or possible freezing (i.e. in roof spaces or ventilated underfloor spaces). Drain taps should be positioned at the lowest point of the system in accessible locations to permit the whole system to be drained down. The drain taps should be in accordance with BS2879. Copper tubing to BS2871, Part 1 is recommended for water carrying pipework. Pipework in horizontal runs should have a gradient where possible to facilitate the removal of air. Ensure that the boiler heat exchanger is not a natural point for air collection. A typical heating system with domestic hot water circuit is illustrated in fig. 9.

Important - If thermostatic radiator vales are fitted a bypass must be fitted to ensure a minimum flow rate through the boiler of 6 l/min. The bypass should be fitted as far as possible from the boiler.

Make Up Water

Provision must be made for replacing water lost from the sealed system. Reference should be made to BS6798, for methods of filling and making up sealed systems. There must be no direct connection between the boiler's central heating system and the mains water supply. The use of mains water to charge and pressurise the system directly, is conditional upon the Local Water Byelaws. Again any such connection must be disconnected after use. A typical temporary filling loop is shown in fig. 10.

Domestic Hot Water

Always fit a scale reducer in "hard water areas" (18 clarke degrees or over)". A 15mm copper connection point on the boiler for attaching to the main supply is provided. The maximum domestic water pressure for the inlet supply is 10 bar (145 P.S.I.). If the cold mains supply exceeds 5 bar (72 P.S.I.), a water governor or pressure reducing valve must be fitted by the installer into the mains supply in an inconspicuous but accessible position preferable between 3 and 5 metres (10-16ft) before the appliance. Such a valve must be approved by the Water Research Council.

Attention - is drawn to the Model Water Byelaws.

Fittings manufactured from duplex (alpha-beta) brass are not acceptable for underground use and certain water undertakings will not accept their use above ground.

Ensure all pipework is adequately supported

Gas

NOTE: A bypass that will ensure a minimum flow rate of 6 L/m at all times must be fitted as far as possible from the boiler if thermostatic radiator valves are fitted.

Cold water

Additional expansion

vessel C.H. (if required)

Filling point C.H.

Bypass

Fig. 9

Key

1. Filling point C.H.

2. Temporary connection

3. Cold water supply Fig. 10

MODENA 80 E

CLEARANCES:

* 600mm minimum clearance for servicing access

Fig. 11

Terminal Position

460 5 min.5 min.

100 min.860200 min.

720

270 50 mm

600* min.

Fig. 12

POSITION MINIMUM SPACING mm

A Directly below an openable window, air vent, or any other ventilation opening 300

B Below gutters, soil pipes or drainpipes 75 C Below Eaves 100

D Below a Balcony 100

E From vertical drainpipes or soilpipes 75

F From internal or external corners 100 G Above adjacent ground or balcony level 100 H From a surface facing the terminal 600

I Facing another terminal 1,200

J From opening (door/window) in carport into dwelling 1,200 K Vertically from a terminal on the same wall 300 L Horizontally from a terminal on the same wall 300

N Below carport 600

A Quinnel Barrat and Quinnel guard (part. No. C2) should be screwed to the wall centrally over the terminal, when the terminal height is less than 2 m from floor level.

MODENA 80 E

3.01 Drilling Template (Top Flue Application)

Select suitable mounting position for boiler, using the template mark flue outlet and boiler mounting points. Drill two 10mm holes 70mm deep to accept the wall plugs, fit wall plugs. Using a core drill cut a 118mm diameter hole for the flue.

Ø118

269

183 min

932 min

280

200

21 min

Ø3/4" Ø1/2" Ø1/2" Ø1/2" Ø1/2" Ø3/4"

123 4 5 6

125 min

110

165 min

5 min

295.5 min 200 min

1. CH flow

2. Safety Valve

3. Domestic hot water outlet

4. Gas supply

5. Domestic hot water inlet

6. CH return

Fig. 15

MODENA 80 E

3.02 Restrictor

For boiler operation, the restrictor supplied with the unit must be mounted following the instructions below. Determine the correct size of flue restrictor required. Before inserting the flue gas duct in the boiler, check that the restrictor fitted is correct and that it is correctly positioned (see fig. 18).

N.B.: the diameter of the hole is stamped

on the restrictor

Boiler is fitted with Ø45 restrictor as standard

Holes Ø : 45 47 50

Fig. 18

Choice of restrictor:

• With concentric pipes: - up to 1m long + one bend, use the 50 mm restrictor.

- for flue lengths over 1 meter, use no restrictor.

• With separate pipes: - Calculate the total flow resistance of the air and flue pipes in metres (cap. 3.08.2)

- utilise the table shown above to choose the more suitable restrictor for the flow resistance calculated

METSYSEPIPOWTROFROTCIRTSER

E08ANEDOMNO

ecnatsiserwolflatoT

metsyseulffo

muminimmumixammm

m0m3154

m31m3274 m32m8305 m83m84rotcirtseron

esU

rotcirtser

ezis

MODENA 80 E

3.03 Top Outlet Concentric Flue Connection

3.03.1 Vertical concentric connection

Concentric Vertical Connector

A vertical connector can be supplied for vertical discharge with concentric pipes. The simple mounting and use of double lip gaskets at the joints makes this an extremely easy and safe option.

Fig. 19

3.03.2 Horizontal concentric connection

A 90° bend (fig. 20) can be supplied for the horizontal connection of air and flue gas pipes. This can be oriented towards the chosen wall in degrees of 45°.

Ø1

25-30 mm

Ø2

A=L+(85-90)mm

Detail of mounting the bend

Ø1

Ø2

Ø1=100 Ø2=60

Trim the 60 mm internal diameter tube

Fig. 20

MODENA 80 E

Notes on concentric horizontal installation

To locate the centre of the hole for passing the pipes through the wall, refer to fig. 15. Bear in mind that the two concentric pipes must slope downwards away from the boiler at a rate of about 3 mm/m to avoid rainwater entering the boiler. The concentric pipes making up the air flue gas duct must be sealed with the gasket where they join the boiler (fig. 21). Outside, the pipes should protrude from the wall between 10 and 60 mm (fig. 21).

Fig. 21

Between 10-60mm

3.03.3 Maximum concentric flue length

First table below shows the maximum flue lengths available for boilers with concentric systems. For correct calculation remember to include the reduction for bend and flue terminals listed on second table. Please refer to 3.06 for use of restrictor

elbissimrepthgneleulfmumixaM

lacitreV *latnoziroH lacitreV *latnoziroH

cirtnecnocmm001 cirtnecnocmm521

E08animoDm4m3m5m5

*For horizontal Flueing the reduction for appliance bend or turret are already included.

slanimretfoordnadnebrofnoitcudeR

°09dnebcirtnecnocmm001m1

°54dnebcirtnecnocmm001m5,0

°09dnebcirtnecnocmm521m5,0

°54dnebcirtnecnoc521m52,0

max. 3 m

max. 4 m

concentric 100/60

concentric

100/60

Fig. 22a

Fig. 22b

MODENA 80 E

Ø80Ø80

AIRFLUE

3.04 Top Outlet: Two Pipe Flue System

3.04.1 Two pipe connection

Two separate ducts Ø80 for air intake and flue gas discharge can be directly connected to the boiler. After conversion for top outlet (see 3.05) mount the separate outlet kit "1"

Insert blanking plate in remaining air intake

Fig. 23

Connect flue duct to central hole Ø80 and air duct to left or right air intake hole Ø80. Insert blanking plate "2" in remaining air intake. A wide number of accessories for two pipe systems are available from Ferroli (ref. to page 32-

33). Before installing your system please check via calculation table at 3.08.2 you are not exceeding the maximum

permissible length for the appliance.

Notes on two pipe system installation:

When using the two pipe system the flue discharge pipe must have a 25mm air gap when passing through combustible materials. Where the flue discharge pipe passes through the airing space of an airing cupboard it must be protected by a non combustible guard or expanded metal giving an annular air gap of at least 25mm. Where the flue discharge pipe passes through a wall containing cavity insulation, a non combustible sleeve must be fitted. Additionally a gap of 25mm between the sleeve and the insulation should be provided by cutting back the insulation or packing loose fill bead insulation with mineral fibre. Where the flue pipe is run through an unheated roof space it should be insulated with non combustible insulating material to prevent condensation. The flue pipe should be supported at intervals of not more than 1.8m and the support should be preferably below a joint.

3.08.2 Two pipe flue system

• Calculating maximum permissible flue length.

The calculation method is based on a standard reference parameter (1 metre of horizontal air flue 80 diameter 80) for the maximum length permissible for all the pipes + fittings flow resistance coefficient. In other words, for all components and pipes in the different installation configurations (vertical or horizontal, air or flue, etc.) and for all the fittings, a flow resistance (reduction) equivalent to x metre of horizontal air induction pipe is indicated. For every boiler model a maximum pipe length is provided, expressed in n metres of horizontal air pipe. In this way, to calculate the length of a proposed 2 pipe air-flue system, add the flow resistance (reduction) in equivalent metres-air. For every component and fitting present in the system, and to check that the total is less than the maximum length the permissible for the boiler model.

IMPORTANT: the pipes and fittings flow resistance (reduction) have been summarised on the following pages. The flow resistance values written refer only to Ferroli pipes and fittings.

Calculation routine

1. Utilise the pipes and fittings flows resistance tables on the following pages and calculate the total flow resist-

ance in metres-air, by adding the flow resistances of the components in the whole air-flue system, based on their position (vertical or horizontal, air inlet or flue outlet).

Please note that the same fitting, identified by a one code (i.e. 1 pipe diameter 80, code KWMA83A), can offer

different flow resistances if positioned as air inlet or flue outlet, if placed vertically or horizontally.

The flow resistance of the special two pipe flue-air adapters do not have to be included in the calculation

as they are already included in the maximum length calculation.

2. For the restrictors, please refer to cap. 3.06 to determinate the correct diaphragm.

3. Check that the total flow resistance calculated is less or equal to 48 metre, the maximum permissible for

Domina 80E.

MODENA 80 E

Tab. 1 -

A c c e s s o

i e s

8 0

Description

flue Ø80

Male-female

bend 45° Ø80

Female-female

bend 90° Ø80

Female-female

Male-female

bend 90° Ø80

system

plug+trap for

with inspecting

condensate drainage

Pipe fitting M/M/F Ø80

outlet

Condensate flue

Spigot and socket

reduction Ø80/100

products

Airwall terminal

of combustion Ø80

Reduction

Air Flue

Vertical

Horizontal

Vertical

Horizontal

1112

1,2 2,2

1,5 2,5

c c e s s

i e s

8 0

c c e s s o

i e s

Description

Ø80

Outlet flue air inlet

for concentric system

Pipe fitting for

outlet flue Ø80

Ø80

Outlet flue air inlet for

connection with split end

flue Ø100

Male-female

45° Ø100

Male-female bend

Male-female

bend 90° Ø100

products of

Air wall terminal

combustion Ø100

Reduction

Air Flue

Vertical

Horizontal

Vertical

0,4 0,4 0,4 0,8

0,6 1

0,8 1,3

Horizontal

Air terminal of

inlet protection Ø80

0 0

Ø100

of outlet

protection

Air terminal

socket

Ø 80/100

reduction

Spigot and

1,5

1,5 3

MODENA 80 E

For further accessories please refer to:

"Flue system manual for room sealed boiler"

Example of calculation for wall inlet/outlet

with 2 pipe system

maximum total flue length: 48 metres

Attention: flow resistance (reduction) equivalent included between 38 and 48 (see table on page 27) Remove the flue diaphragm. The flue and air pipes must have an inclination downward equal to 3%.

Fig. 24

3.04.3 Example of installation with two pipe systems

Example of roof inlet/outlet

Example of wall inlet/outlet

REF. N° OF PIECES DESCRIPTION CODE LENGTH OR

1 1 Air bend 80 mm R/D = 0,75 1,5 m 2 12 Horizontal air pipe 12,0 m 3 1 Air wall terminal 2,0 m 4 1 Air inlet closing flange — 5 1 Flue bend 80 mm R/D = 0,75 2,5 m 6 12 Horizontal flue 24,0 m 7 1 Air wall terminal outlet flue 5,0 m

TOTAL

REDUCTION

47,0 m

Example of direct roof flue outlet

and wall air inlet

Fig. 25

Fig. 26 Fig. 27

MODENA 80 E

3.05 Connecting the central heating and domestic hot water circuits

Connect to the relevant connections as indicated in fig. 1. Connect the pressure relief valve discharge pipe (15mm) to the outside of the building, where possible over a drain. The discharge must be such that it will not be hazardous to occupants and passers-by or cause damage to external electric components or wiring. The pipe should be directed towards to the wall. To ensure long life, the heating circuit should be correctly sized and fitted with all the controls necessary to ensure correct functioning and operation. The differential between the boiler flow and return pipes

should not be more than 20°C. You are advised not to use the boiler with return temperatures of less than 50°C in

order to prevent patches of condensation forming and having a corrosive effect on boiler components.

3.06 Boiler water characteristics

If the water is harder than 18 clarke degrees, the water used should be treated to avoid possible scale in the boiler caused by hard water or corrosion by aggressive water. It should be remembered that as a result of its low thermal conductivity, even scale of just a few millimetres thick can lead to considerable overheating of the boiler walls, resulting in serious problems. IT IS ABSOLUTELY VITAL THAT THE WATER USED IS TREATED IN THE FOLLOWING CASES: a) Extensive systems (containing large quantities of water); b) Frequent additions of water to top-up the system; c) Domestic hot water circuits If the system requires partial or total emptying, you are recommended to refill it with treated water.

3.07 Filling

When cold, system pressure should be about 1 bar. If while running venting off of air dissolved in the water causes the pressure of the central heating system to drop below the minimum level described above, the user must utilise a filling loop to bring it back to the original value. During operation, water pressure in the boiler when hot should be about 1.5 - 2 bars. After filling, always close and disconnect the filling loop.

Note - If there is a possibility of air pockets forming in certain points of the central heating system flow and return pipes, you are recommended to fit an air vent valve at these points.

Note - When the boiler is installed below the level of the central heating system, single check valve should be fitted to prevent gravity circulation around the heating system.

3.08 Gas connection

Gas connection should be carried out using a rigid pipe. The flow at the gas meter should be sufficient for the simultaneous use of all appliances connected to it. Connect the gas supply to the boiler according to current regulations. The diameter of the gas tube leaving the boiler is not the determining factor in choosing the diameter of the pipe between the appliance and the meter. This must be selected in relation to length and pressure drop and in any instance should not be less than 22mm.

The whole of the gas installation including the meter should be inspected and tested for soundness and purged in accordance with BS6891-1988.

N.B. - The filling loop will be fitted by the installer in accordance with water by laws, at the time of installing the system. It is NOT a part of the boiler.

3.09 Electrical connection

The boiler must be connected to a single phase 230 V 50 Hz electricity supply with a 3 A max. fuse and a bipolar switch with contact opening of at least 3 mm fitted between the boiler and the electricity supply. The boiler must always be connected to an efficient earth installation. Under the electrical box, there is a 3 pole terminal board for connecting the boiler to the mains (230 V 50 Hz) and a 2 pole board for connecting a room thermostat (RT). To connect, undo the screws fixing the terminal board box and connect the wires, ensuring correct polarity of the terminals. It should be noted that there is low voltage (24 V) between the room thermostat contacts. When the boiler is connected to an electricity main, it is essential TO OBSERVE CORRECT POLARITIES (LIVE: brown cable, NEUTRAL: blue cable, EARTH: yellow-green cable).

All wiring must conform to current I.E.E. regulations.

MODENA 80 E

Note: If the power supply cable has to be replaced, use “0.75mm (24/0.20) cable only to BS6500 with a maximum

external diameter of 8 mm.

Note - When connecting a room thermostat or external timer, do not link the power supply of these devices to the switching contacts. The switch contacts must be voltage free. Any mains powered devices must utilise mains power solely to drive the timer motor.

Applying mains voltage to the switch contacts will irreparably damage the circuit board.

Although this boiler can also be used without a room thermostat, you are recommended to install one for the following reasons: Greater comfort conditions due to more accurate control of room temperature. Greater energy savings.

3.10 Differential air pressure switch (fig. 2 - part 43)

The differential air pressure switch is a safety device which allows the main burner to ignite only after having verified that the fan is working correctly. If the difference in pressure between the flue gas discharge pipe and the air intake pipe is not at least equal to the minimum pressure switch calibration value, the pressure switch contacts do not close and the gas valve is thus prevented from opening. In addition, the electrical circuit of the boiler is designed so that if for any reason the air pressure switch contacts remain closed when the fan stops, the burner will not start up again.

3.11 Checks

Fill the central heating system as described previously (3.11) and check there are no leaks in the domestic hot water and boiler water circuits. Check that there are no gas leaks on the boiler or the supply to the boiler. Also check that the electrical connections are correct.

3.12 Installing a room thermostat (72) (fig. 48)

To connect the thermostat: Open the electrical box on the base of the appliance and remove the “jumper cable” between terminals 4 and 5. Connect the room thermostat (72) as shown in figure 48.

3.13 Ferroli Modena boiler programmer fixing (optional)

Fig. 29

MODENA 80 E

- Remove outer case by removing two securing screws from the rear bottom corners and lift off.

- Remove screw securing facia panel and swing facia panel down.

- Remove rear cover from facia.

- Remove clock blanking plate from the boiler facia panel.

- Mount clock into facia panel using two screws and spacers provided.

- Take the black cable containing the blue and brown wires and connect the loose spades to clock terminals 1 & 2.

- Connect the plug end of the cable to terminal X2 of main circuit board.

- Remove the connector link from the 2 wires located behind the clock position.

- Connect these to terminal 3 and 5 of the clock.

- Replace everything in reverse order.

- Please refer to page 55 of User manual for use of time clock

Terminal 4 & 5 situated underneath the boiler in the terminals compartment

Existing wiring

X2 X3

12121312345678910 12345678910111213

X12

MF03F

Wiring for integral clock and/or external controls

X2 X3

12121312345678910 12345678910111213

JP03

123456789

X10

X11

Nat/LPG

JP02 JP01

Terminals for integral clock situated inside circuit board compartment

CLOCK

Fig. 30

VOLTAGE FREE SWITCH

External control i.e. Room Stat/Clock

JP03

MF03F

X12

123456789

X10

X11

Nat/LPG

JP02 JP01

CLOCK

Fig. 31

MODENA 80 E

4. COMMISSIONING AND TESTING

4.01 Checks to be carried out before starting up for the first time

When starting the boiler up for the first time check:

• that the gate valves between the boiler and central heating systems are open;

• that the central heating system is filled and vented;

• that there are no gas or water leaks from the central heating system or boiler;

• that the electric connections are correct and the earth wire of the boiler is connected to an efficient earthing installation and a 3amp. fuse is fitted to the isolator;

• that there are no flammable liquids or materials near the boiler;

4.02 Starting up the boiler

• Open the gas cock upstream of the boiler.

• Vent air present in the pipe upstream of the gas valve.

• Turn on the switch (if present) or plug in the boiler.

• Rotate the switch (fig. 2 - part 98) into the ON position.

• Check inlet working gas pressure, burner pressures and gas rate.

At this point, choose whether the boiler is to be used for central heating and domestic hot water production or for domestic hot water production only. If the former is chosen (central heating and domestic hot water production), turn

the knob 63 (fig. 2) to the “Winter” position. Set the knob above 50°C and set the room thermostat (if fitted) to maximum.

The burner ignites and the boiler starts to function automatically, controlled by its control and safety devices.

If the latter is chosen (domestic hot water production only), position the knob 63 (fig. 2) on the “Summer” position. In this mode the boiler is ready to operate automatically whenever domestic hot water is drawn off.

Note - If after completing the start-up procedure correctly, the burners fail to ignite and the boiler shut down warning lights up, wait about 15 seconds then rotate the knob 98 (fig. 2) against spring pressure to the RESET position and release it. The reset electronic control unit will repeat the start-up cycle.

Note - In central heating mode after resetting the boiler will go into it 2 minue delay before starting up again. If after a second attempt the burners still fail to ignite, consult the paragraph “Troubleshooting”.

Note - If there is a power failure while the boiler is in operation, the burners automatically go out and re-ignite when the power returns.

4.03 Shutting down

Close the boiler isolation gas cock and turn off the electricity to the boiler.

Important: If the boiler is not to be used for lengthy periods during the winter, to avoid frost damage, you are recommended to drain the water from the circuits (domestic hot water and central heating). Alternatively, drain the domestic hot water system only and add special anti-freeze to the central heating system.

4.04 Checks and controls after first start-up

• Check there are no leaks in the gas and water circuits.

• Check correct boiler start up by carrying out start up and shut down tests using the boiler stat.

• Check the integrity of the air-flue pipes during boiler operation.

• Check that the gas consumption indicated on the meter corresponds to that given in Technical Data (page 5).

• Check that water is circulating correctly. Balance the radiators to ensure that the flow and return differential does

not exceed 20°C.

• Check that when operating in the “Winter” mode, the pump stops and domestic hot water is produced correctly when the hot water tap is turned on.

• Check that in the “Summer” mode, the burner lights up and shuts down correctly when the domestic hot water tap is turned on and off.

MODENA 80 E

• Check that the domestic hot water flow and ∆T correspond to the table. Do not rely on empirical measurements.

Temperature should be measured using thermometers as near as possible to the boiler, bearing in mind the heat loss from the pipes.

• Check that the gas valve modulates correctly both during the central heating phase and the domestic hot water production phase.

• Determine the combustion efficiency and the composition of the flue gases (refer to 8.04)

• If any of the above are not correct refer to Technical Data (page 5). Adjustment (page 41) and Troubleshooting (page 58).

5. ADJUSTMENT AND GAS CONVERSION

5.01 Adjusting the pressure and flow rate to the main burner

This boiler operates on the flame modulation principle. It has two fixed pressure values, minimum and maximum, which must be as shown in the table (pages 5), whichever type of gas is used.

Note - Because correct minimum and maximum pressures are critical to the efficient operation of the boiler it is ESSENTIAL that the following adjustments are carried out by COMPETENT personnel ONLY.

5.02 Adjusting minimum and maximum pressure Honeywell V K4105G gas valve

- Connect suitable pressure gauge to burner test point “B” downstream of the gas valve.

- Disconnect the pressure compensation tube «F».

- Remove the protective cap «C».

- Adjust potentiometre P3 (on the main board) at minimum (anticlockwise).

- Operate boiler for central heating

- Adjust minimum pressure by rotating screw «D» clockwise to reduce pressure and anticlockwise to increase pressure.

- Adjust potentiometre P3 at maximum (clockwise)

- Adjust max pressure by rotating screw «E», clockwise to increase pressure and anticlockwise to reduce pressure.

- Reconnect the pressure compensation tube «F».

- Replace protective cap «C».

Maximum + Minimum possible gas pressures are now set. Range Rating the central heating is not necessary because for Central Heating the Auto Range Rating facility will set the burner pressure to set the system unless the boiler thermostat is set to max, when the burner pressure will go to max output.

Legenda

A=Gas inlet test point B=Gas outlet test point C=Protection cup D=Min. pressure adjusting screw E=Max. pressure adjusting screw F=Balancing tube

IN OUT

Fig. 32

EB A D

MODENA 80 E

5.03 Adjustment

potentiometers

P1 = C.H. temperature

adjustment

P2 = D.H.W. temperature

adjustment

P3 = C.H. output adjustment P4 = Ignition gas pressure

adjustment

P5 = Factory set - Don't touch

P1 CH

+- +-

Fig. 33

P2 DHW

5.04 Adjusting maximum output for central heating system (fig. 33)

This adjustment must be carried out electronically using the “P3” adjustment screw starting with a cold central heating system. Connect a pressure gauge to the pressure test point downstream of the gas valve. Rotate the temperature adjustment screw to maximum then regulate the pressure to the value required, consulting the diagram (figs. 4 and 5) (page 8). Once this operation is complete, start up and shut down the burner two or three times using the thermostat. Check each time that the pressure values remain as adjusted and that the burner ignites correctly. Otherwise further adjustment is necessary until the pressure remains stable on this value.

N.B. - when carrying out this operation ensure that the boiler thermostat is set to maximum otherwise the adjustment will not be accurate.

5.05 Adjusting central heating flow temperature

Central heating water temperature is adjusted by rotating the control knob (fig. 2 - part 63). Rotate the knob clockwise to increase water temperature, anticlockwise to reduce water temperature. Temperature can be varied

from a minimum of 30°C to a maximum of 85°C. However, we recommend not operating the boiler below 50°C.

5.06 Adjusting room temperature (when a room thermostat is fitted)

Room temperature is controlled by positioning the room thermostat knob to the required value. The thermostat automatically controls the boiler, temporarily interrupting the electrical supply subject to the room heat requirements.

5.07 Adjusting the central heating flow ∆t by varying pump flow-head

The thermal head ∆t (the difference in temperature between the delivery water and return water in the central heating circuit) must be less than 20° c. This is obtained by varying pump flow rate and head using the multi-speed variator (or switch) on the pump itself. Increasing the pump speed reduces ∆t and vice versa. The minimum differential must not be less than 11°C.

5.08 Adjusting central heating system pressure

The pressure of water in the central heating system, read on the control panel pressure gauge, is adjusted as described in paragraph 3.11 page 35.

N.B. - To avoid incurring unnecessary expense, in the event of boiler shut down, check that this is not caused by a lack of electricity or gas, or low water pressure before calling the Customer Technical Service Helpline.

5.09 Gas conversion

The following adjustment and conversion operations must be carried out by competent personnel. FERROLI Limited accepts no liability for damage to property or personal injury resulting from tampering with the boiler by unauthorised persons.

To convert the boiler from Nat Gas to LPG and vice versa, the main burner injectors must be replaced. Minimum and maximum pressures must then be adjusted on the gas valve (see Adjustment page 41).

Note: After converting the boiler from natural gas to liquid gas, fit the orange plate in the conversion kit near the data plate.

Note: injector diameters and pressures at the main burner are given in Technical Data (page 5).

MODENA 80 E

6. MAINTENANCE AND CLEANING

The following operations must be carried out by Corgi registered engineers only.

6.01 Annual Servicing

The following should be checked at least once a year:

• Water pressure in the central heating system when cold should be about 1 bar. If this is not the case, bring it back

to this value.

• Check control and safety devices (gas valve, flow meter, thermostats, etc) are functioning correctly.

• The burner and heat exchanger must be clean. To avoid damage, always clean them with a soft brush or com-

pressed air. Never use chemical products.

• The expansion vessel must be checked (precharge 1 bar).

• Check there are no leaks in the gas and water circuits.

• Check the air-flue gas duct terminal is free from obstructions and sound.

• The electrodes must be free from corrosion build up and correctly positioned.

• Gas flow and pressure must correspond to the values given in the Technical Data (page 5).

• The pump must be free to rotate.

6.02 Cleaning the boiler and burner

The boiler should be serviced annually. The heat exchanger and burner must never be cleaned with chemical products or steel brushes. Particular attention must be paid to all seals and fixings associated with the room-sealed compartment (gaskets, grommets, etc). Air leakage would cause pressure inside the compartment to drop, possibly tripping the differential pressure switch and thus shutting down the boiler. After cleaning particular attention should also be paid to checking stages of start-up and operation of the thermostats, gas valve and pump.

6.03 Servicing procedure

1. Visually check boiler for correct intallation and flueing.

2. Isolate electricity supply + check fuse is 3amp.

3. Remove case by undoing the two screws locate at the bottom rear corners, lift slightly and pull forward.

4. Carry out preliminary electrical checks at boiler junction box. This is located in the centre of the boiler at the

bottom and can be accessed be the removal of a single screw. Any faults found must be rectified before proceeding.

5. If electrical checks prove O.K. replace cover and secure with screw.

6. Attach a manometer to the boiler gas inlet test point, turn on electricty and fire boiler for hot water, check inlet

pressure. This should be 20mbar minimum for NG and 37mbar for LPG. If this is not the case there is a supply problem and this will need to be remedied.

7. If inlet pressure is O.K. shut down boiler and remove manometer from gas inlet pressure test point and attach

it to the boiler burner pressure test point. Reseal inlet pressure test point.

8. Fire boiler for hot water and check that the maximum pressure is 11.8mbar for NG and 36.0mbar for LPG. Turn off

tap. Turn P3 on the main circuit board to minimum and fire the boiler for heating, check that the burner pressure reads 2.5 mbar for NG and 7.8mbar for LPG. Turn P3 back to max position. Shut down boiler, remove manometer, seal test point. If the pressures are not as specified they will need to be adjusted on the gas valve(see page 41 installation manual).

10. Remove fan by undoing the two fan securing screws tilt the front of the fan upwards to detach it from the securing pin and withdraw it from the boiler, disconnect the wires and air pressure switch tubes.

11. Take off the combustion chamber cover by removing the three securing screws.

12. Lift off flue hood and flue baffle plate.

13. Pull off the ignition and flame rectification leads from their respective electrodes.

14. Undo the gas union in the centre of burner rail and take out the two securing screws. Remove the burner rail and clean rail and injectors.

15. Remove two screws securing the burner assembly and remove the assembly. Clean burners.

16. Clean heat exchanger with a soft brush.

MODENA 80 E

17. Re-assemble baffle, flue hood and fan assembly, secure with screws previously removed.

18. Refit burner assembly and burner rail.

19. Reconnect ignition and flame rectification leads.

20. Reconnect gas union and tighten.

21. Refit combustion chamber cover, secure with screws.

22. Examine seals on room sealed cover refit cover and secure with screws.

23. Turn on gas and electricity.

24. Fire boiler and check all gas joints for soundess.

25. Check flame picture and all controls for correct operation.

26. Check room sealed cover for leakage.

27. Check domestic water flow rate and temperature is within specifications.

28. Check operation of all safety cut off devices.

29. If a combustion analyser is to be used there are test points provided on the front of the room sealed cover. The

right hand grommet is for air and the left hand one is for flue gas. The boiler must reach operating temperature before this test is carried out (normally 10-15 minutes). CO/CO2 ratio should not exceed 0.0080. Immediatly after servicing (0.0040 at any other time)

30. Refit case and secure with screws.

31. Leave boiler set to customers requirements.

6.04 Flue Gas Analysis

1. The appliance should be checked visually for obvious defects.

2. After removing the jacket on the boiler there are two test point, one for flue gas and the other for air.

3. Open the air and flue gas test points;

4. Introduce the probes as far as the retainer;

5. Turn on the hot water tap;

6. Turn the domestic hot water stat to maximum;

7. Allow the boiler to reach thermal equilibrium (10 - 15 min.);

8. Take reading;

9. The CO/CO2 ratio should be 0.0040 or below. If the reading is above this then a full strip down service must be carried out and the cause remedied.

10. Following a full strip down service and after reaching thermal equilibrium the permissible reading is 0.008 or below.

N.B.: To ensure correct readings the boiler must have

reached normal operating temperature. Testing the boiler before thermal equilibrium has been attained will give incorrect readings.

N.B.: If you have only 1 probe, measure separately air and flue gas, close the test point not in use.

FLUE

AIR

Fig. 34

MODENA 80 E

7. REPLACEMENT OF PARTS

7.01 Initial procedure

a) The boiler is cold, electricity supply is isolated, and the gas supply is turned off at the inlet of the boiler

b) For replacement of parts where water connections are broken, it will be necessary to isolate and drain either

or both the central heating or domestic hot water circuits of the boiler only. The cold water mains inlet is isolated at the inlet cock. The D.H.W. is drained by opening a hot tap. The C.H. flow and return cocks are turned off at the isolation cocks. The C.H. is drained via the pressure relief valve (twist about 1/2 of a turn).

c) Remove components following special notice below and replace in reverse order.

d) Ensure water and gas washers are in good condition.

7.02 Final procedure

• Re-open cocks and re-charge the system to about 1 bar, and vent boiler and radiators. Re-charge to 1 bar if necessary.

• Upon completion of the work the following. Should be checked: I) Gas soundness of all joints II) Water soundness of all joints III) The electricity supply. IV) The pressure of the sealed system and top up where necessary.

7.03 To lower the control panel (fig. 35)

• Remove the two fixing screw (fig. 35) "A"

• Lift the two metal brackets "B"

• Rotate down the front panel "C"

Fig. 36

7.04 Remove and re-presurising of C.H. expansion vessel (fig. 36)

• Refer to 7.01 a, b

• Isolate electricity and water supplies

• Remove outer case (two screws bottom rear corners)

• Loosen the "A" connections to expansion vessel

• Remove "B" screw

• Remove the expansion vessel

• Re-assemble in reverse order

• Re-pressure expansion vessel

(charge pressure 0,8-1 bar) through the valve "C"

• Ensure pressure relief value is open

(twist about 1/2 of a turn) when repressurizing

Fig. 35

MODENA 80 E

7.05 Gas valve (fig. 37)

• Isolate gas and electricity supplies

• Remove outer case (two screws bottom rear corners)

• Remove the two securing screws and lower control panel

• Disconnect electrical connections from valve ("A")

• Disconnect plastic tube "C"

• Loosen the connection "D" on gas pipe and the gas inlet connection of the boiler "E"

• Remove the two fixing screw "E" below gas valve

• Slide out gas valve

• Remove four fixing screw "F" on top of the valve and disconnect the gas pipe

• Remove bottom connection from gas valve.

• Fit top + bottom gas connections to the new gas valve and replace in reverse order

7.06 Air pressure switch (fig. 38)

• Isolate electricity

• Remove outer case (two screws bottom rear corners)

• Open room sealed department

• Remove the two screw "A" fixing air pressure switch

• Disconnect electrical leads "B"

• Remove pressure sensing tubes (white=D; Red=C)

• Note relevant positions of all connections and replace in reverse order.

Fig. 37

7.07.1 D.H.W. temperature sensor or

Central Heating Temperature Sensor (fig. 39)

• Isolate electricity and water supplies

• Remove outer case (two screws bottom rear corners)

• Remove the two securing screws and lower control panel

• Identify the sensor from figure 39

• Disconnect electrical connection to the sensor

• Drain the affected service either D.H.W. or C.H.

• Unscrew the sensor

• Replace in reverse order

7.07.2 Water Pressure Switch (fig. 39)

• Isolate electricity and water supplies

• Remove outer case (two screws bottom rear corners)

• Remove the two securing screws and lower control panel

• Identify the switch from figure 39

• Disconnect electrical connections + note positions to the switch

• Drain the boiler

• Unscrew the sensor

• Replace in reverse order

7.07.3 Safety Valve (fig. 39)

• Isolate electricity and water supplies

• Remove outer case (two screws bottom rear corners)

• Remove the two securing screws and lower control panel

• Identify valve from fig. 39

• Drain the boiler

• Release the outlet union to the valve and undo the valve union connection

• Remove the valve outlet fitting

• Replace in reverse order

Fig. 38

Water pressure switch D.H.W. sensor

C.H. sensor

Safety valve

Fig. 39

MODENA 80 E

7.08 Removal of burner (fig. 40)

• Isolate gas and electricity supplies

• Remove outer case (two screws bottom rear corners)

• Remove room sealed cover

• Disconnect ignition and flame rectification leads "A"

• undo gas rail union "B"

• Undo two screws securing the burner assembly to the boiler combustion chamber "D"

• Withdraw the burner assembly

7.09 Injectors (fig. 40)

• Proceed as 7.08

• Remove fixing screw "C" on both sides of gas collector

• Remove gas collector

• Unscrew and remove injectors;

• Clear or change injectors

Fig. 40

7.10 Removal of fan (fig. 42)

• Isolate gas and electricity supplies

• Remove outer case (two screws bottom rear corners)

• Remove room sealed cover

• Disconnect fan electrical leads "A"and note positions

• Disconnect air pressure tubes from air pressure switch "B" + note positions

• Undo two screws securing fan assembly "C"

• Remove fan from boiler

• Swap mounting plate over to new fan + replace in reverse order

7.11 Limit thermostat, or overheat cut off thermostat (fig. 42)

• Isolate electricity

• Remove outer case (two screws bottom rear corners)

• Remove room sealed cover

• Identify the location of thermostat from fig. 42

• Pull out thermostat from tube, with its spring

• Remove electrical connections from thermostat

• Remove spring from thermostat

• Replace in reverse order

Overheat cut off Limit thermostat

Fig. 42

MODENA 80 E

7.12 Spark or flame detect electrode

(fig. 43)

• Isolate gas and electricity supply

• Remove outer case (two screws bottom rear corners)

• Open room sealed compartment and combustion chamber

• Identify electrode from fig. 43

• Unplug electrical connection "A" from sensing electrode

• Remove fixing screw and remove flame detect electrode

• Remove the two fixing screw from spark electrode plate and remove it.

7.13 D.H.W. flowmeter

Flame detect

Spark

Fig. 43

• Isolate electricity and water supplies

• Open a hot water tap to release water pressure from the domestic side of the heat exchanger, close tap.

• Remove outer case (two screws bottom rear corners).

• Remove two screws from control panel and tilt forward

• Take off protective cover from main PCB and unplug flow meter lead from terminal X6

• Place a piece of cloth or some other absorbent material over rear of control panel to catch any drops of water that may be released when removing the flow meter

• Using a 24mm open ended spanner, undo flow meter unions "A" and "B" taking care not to twist the copper tubing (access through base panel).

• Remove flow meter, check + clean filter + restrictor + fit to new flow meter.

• Reassemble in reverse order.

Fig. 44a

Take care on correct position of components as reported in fig. 44b

Key

37 Cold water inlet filter 38 Gasket 39 Cold water flow limiter

37 3938 38

Fig. 44b

MODENA 80 E

7.14 Pump (fig. 45)

Replacement of pump head

• Isolate electricity and flow and return pipes

• Remove casing (two screws bottom rear corners).

• Remove the two securing screws and lower control panel

• Release pressure from boiler via pressure relief valve

• Unplug the pump lead "A" from the pump head

• Place a piece of cloth or other absorbent material over the rear of the control panel to catch any drops of water that may fall when the pump head is removed.

• Using a 4mm allen wrench undo the four allen screws "B" in the pump head, lift away pump head from the pump body

• fit new head into pump body and secure with the allen screws tightening evenly.

• Replace electrical connection.

Replacement of pump body (fig. 45)

• Proceed as for removal of pump head

• Disconnect the expansion vessel connecting pipe "E" from the rear of the pump body by removing the U clip from the left hand side

• Disconnect the boiler return pipe and disengage the pump lower connection by removing the U clip "C"

• Disconnect the pump to heat exchanger connection by removing the U clip "F"

• Unscrew the two screws on bottom of pump "D"

• Turn the pump body through 90°, pull the bottom

forward and withdraw the pump body

• Reassemble in reverse order taking care to ensure the O-rings are in place and undamaged.

7.15 Removal of heat exchanger

• Isolate gas, water and electricity supplies

• Remove casing (2 screws bottom corners)

• Remove the two securing screws and lower control panel

• Drain heat exchanger for both CH + DHW

• Remove sealed compartment front panel

• Disconnect the overheat thermostat and central heating limit thermostat

• Remove the main burner, fan, flue hood and flow meter as described previously

• Remove the pump to heat exchanger flow connection and locknut

• Undo the domestic water outlet connection and locknut

• Lift out heat exchanger

• Re-assemble in reverse order

Fig. 45

MODENA 80 E

8. FAULT FINDING

Before beginning any fault finding ensure that gas, water and electricity are available.

WARNING: DO NOT link any terminals on block X10 or X11 as this will damage the PCB beyond repair.

8.01 Operating Sequence

With the power established the boiler is in its stand-by mode i. e. power on but no demand. The operational sequence for C.H. and D.H.W. are as follows:

Central Heating Mode

External Call for Heat: The temperature regulator, built in or remote clock and room thermostat, if fitted, must all

call for heat. This will cause the pump to run.

Internal Call for Heat: C.H. flow temperature sensor, 88°C high limit and low water pressure switch all calling for

heat. If both external and internal calls for heat are present the MF03 PCB will energise.

In demand the fan will go to high speed causing the air pressure switch to operate. If the overheat (100°C) stat is

closed circuit the ignition will operate and the gas valve will be energised.

The burner will light at ignition burner pressure, automatically range rating itself up to the heating load, then modulating down when the boiler reaches the desired flow temperature. When the central heating is satisfied the burner will go off and the fan stops i.e. stand-by mode.

Note - If the boiler thermostat is set to maximum than the burner pressure will go to maximum effectively bypassing the auto range rating facility

Domestic Hot Water Mode

External Call for D.H.W: Flow meter registers at least 2.5 litres/min flow to the hot water taps.

Internal Call for D.H.W: Hot water flow temperature sensor 88°C high limit stat and low water pressure switch calling

for heat.

If both internal and external calls are present the boiler follows the same sequence as for C.H. to light the burner. However, for D.H.W. the burner will go straight to maximum and then modulate once the water reaches the set temperature of the control thermostat. Turning the tap off will return the boiler to stand-by mode.

Note: Following shut down of the D.H.W. or C.H. the boiler will go into a three minute central heating delay.

8.02 Limit thermostats

T/Stat Location Function Nominal Circuit Wiring

Operating Colours Temperature

C.H. Limit Top RHS Shuts downmain 88°C Low voltage Blue

of Heat burner if boiler DC Brown Exchanger thermostat fails

Frost Incorporated Fires the boiler 7°C - 14°C Low voltage Red

in C.H. and runs pump to DC Red Sensor maintain minimum

water temperature

Overheat Top LHS Protect boiler by 100°C 240V AC Brown

of Heat stopping ignition Blue Exchanger and cuts power

to gas valve

The MFO3 PCB has fivediagnostic lights, each light corresponds to a particular function and will light in turn as the boiler goes though its sequence of operations.

MODENA 80 E

In order, the five lights indicate:

1 Boiler On Indicate 2 Boiler Shut down warning 3 Domestic Hot Water circuit ON 4 Central Heating standby (Flashing Light)

Central Heating circuit ON (Permanent Light)

5 Insufficient pressure in Central Heating System (Flashing Light)

Electric power supply ON (Permanent Light)

Note: Always check for sufficient gas supply (20mbar inlet working pressure for NG and 37mbar for LPG). Minimum of 22 mm diameter pipework on C.H. flow and return with adequate by-pass. A correctly installed flue system and a 3 amp fuse.

8.03 MF03 PCB

When operating the C.H. the following lights should be on: 4, 5 and flame on light. For D.H.W. the following lights should be on: 3, 5 and flame on light.

If the boiler works for C.H. but not D.H.W., or vice versa, a number of components must be functioning and can, therefore, be eliminated as being at fault.

Boiler will not light for D.H.W.

If boiler works for C.H. but not for D.H.W. the fault is most likely to be the flow meter or D.H.W. sensor. If the tap symbol light is on the fault is the D.H.W. sensor. If this light is not on then suspect the flow meter has not operated.

Boiler will not light for C.H.

If the boiler works for D.H.W. but not for heating the fault is most likely to be external controls (i.e. clocks or room thermostats). Integral clock if fitted or C.H. sensor.

If the heating demand light is on the fault is most likely the C.H. sensor. If this light is not on suspect either a clock or room thermostat not calling.

To override/eliminate any external controls disconnect them from terminal 3 and 4 underneath the boiler and refit the link wire (see fig. 20).

Boiler will not light for D.H.W. or C.H.

The fault is likely to be a component common to both services. Open a hot tap to create a demand - is there a spark at the ignition electrode?

Yes Suspect gas supply, pressure or gas valve.

No Is fan running?

Yes Suspect air pressure switch or overheat stat (if boiler locks out without sparking go to overheat stat)

No Is low water pressure light Flashing?

Yes Top up water to above 1 bar. Does the light go out? (if water pressure o/k suspect high limit stat)

Yes Does fan start?

Yes Does boiler light?

Yes Is hot water OK?

Try heating, if heating does not work follow guide for heating faults. Does low water pressure light go out?

No Suspect low water pressure switch.

If boiler still does not fire see comprehensive fault finding chart.

MODENA 80 E

8.04 Temperature sensors (thermistors)

Identical, but individual, negative temperature co-efficient (NTC) thermistors are fitted in the C.H. and D.H.W. outlets from the heat exchanger. As the water temperature increases the resistance in the thermistor decreases. This causes the PCB to reduce the voltage to the modureg, in turn reducing the burner pressure. The wiring for each thermistor is colour coded red for C.H. and blue for D.H.W. The sensors are fitted in wet pockets.

8.05 Limit thermostats

Two surface mounted auto reset bi-metal thermostats are located on the heat exchanger secured by spring clips. Heat sink compound is used.

8.06 Ignition PCB

Located to the right hand side of the electrical control compartment accessed by lowering the facia then removing the rear cover.

8.07 Main printed circuit board

Secured by flour plastic tabs the PCB is situated inside the control compartment. The transformer for low voltage AC is attached to the PCB as is the DC rectifier. Potentiometers control C.H. output and maximum D.H.W. temperature, both are adjustable by the controls on the facia and because the boiler features automatic range rating no adjustments need to be made. Electro mechanical relays control pump operation and put switched live to the ignition PCB (demand relay), they have transparent plastic covers so that their contacts can be seen moving.

8.08 Air pressure switch

Operating at 230 V AC and situated next to the fan. Different coloured tubes connect the switch to the fan. It is a make on pressure switch and only uses two terminals, the middle terminal is not used.

8.09 Short spares list

KEY NO. DESCRIPTION PART NO. G.C. NO. (from fig 2 )

14 Safety Valve 800130 386-816

16 Fan 800480 E23-851

34 Central Heating Flow Temperature Sensor 800320 E23-839

42 Domestic Hot Water Flow Temperature

Sensor 800320 E23-839

43 Air Pressure Switch 800150 E23-840

44 Honeywell Gas Valve 800266 E23-768

49 Overheat Safety Thermostat 100°C 801270 386-815 50 High Limit Thermostat 88°C 800160 386-577

81 Ignition Electrode C/N fixing Bracket 806460

82 Flame Sensing Electrode 801438 E23-855

136 Flow Meter 803430 E03-340

Main PCB MF02 801873 E23-862

Ignition PCB 800655 E23-848

27 Heat Exchanger 802180 E23-919

8.10 General test and fault finding

Check electrical supply - C.H. water pressure and frost protection

Chek the following carefully before starting

• Gas supply is turned on, is adequate and purged

• Electricity supply is turned on

• Polarity is correct

• CH pressure is set between 1 - 1,5 bar

• CH pump spins freely

D.H.W. taps closed

Summer “ ” position

MODENA 80 E

Chart 1

CH Selector to

Water pressure

is not set between

1 - 1,5 bar?

Check water

pressure

switch wiring

connection

Check and if

necessary

replace water

pressure switch

Put main switch to on

YES

Set pressure to

1 - 1,5 bar

Does fan run at full speed?

Does CH Pump run?

If the boiler temperature

frost protection is activated

Is LED5 on?

YES

Is LED5 flashing?

YES

is less than 5°C

NO NO

Is 230V present across

terminals X1-1 X1-2?

YES

Check and if necessary

replace 2A fuse

Is LED5 ON now?

YES

Go to CHART 2

Repair external

wiring fault

Replace

main board

YES

Disconnect

CH flowtemp sensor

Has fan speed stopped?

Change main board

MODENA 80 E

Chart 2

Check Domestic Hot Water operation

Open DHW taps

Check cold water

inlet pressure

Check if water

filter is clean

YES

Go to

chart 4

DHW flow rate at least 2,5 litre/min?

YES

Is LED3 on?

YES

Is LED4 flashing?

Is relay RY100 switch on?

Check and if necessary

replace limit thermostat

Chart 3

Check Central Heating operation

YES

Check and if necessary

replace main board

Check and if necessary

replace DHW Sensor

Check and if necessary

replace Flow Sensor

DHW taps closed

Put CH temperature selector

to maximum

Ensure external controls

are calling for heat

Is LED4 flashing?

YES

Wait 2 minutes

Is LED4 flashing?

YES

Check and if is necessary

replace CH sensor

Does pump run?

YES

Go to chart 4

Is relay RY100

switch on

YES

Go to chart 4

Is relay RY101

necessary replace

Check

limit thermostat

switch on

Check and if

main board

YES

Check and if

necessary

replace pump

MODENA 80 E

Chart 4

Check fan/flue gas system

YES

Is relay RY100 switch ON?

Go to charts 2-3

Is 230V present across

fan terminals?

Check air pressure

switch wiring connection

Check and if

necessary replace

air pressure switch

YES

necessary replace fan

Does fan run?

Check and if

YES

Is air pressure switch

activated?

Differential air pressure

across the air pressure

switch is greater than

180 Pascal?

Check and clean fan

Check flue and air

intake are correct

and clean

Check Venturi and air pressure switch

tubes are clean

YES

Go to chart 5

YES

Check and if

necessary replace

air pressure switch

YES

Normal operation

carry out

Check D.H.W. and C.H. modulation

Boiler operated

on central heating mode

Does burner

flame modulate?

Check wiring connection

to CH sensor

Check CH sensor

and replace it if necessary

Chart 5

Check restrictor

is correct

Boiler operated

on DHW mode

Does burner

flame modulate?

Check wiring connection

to DHW sensor

Check DHW sensor

and replace it if necessary

YES

Normal operation

carry out

MODENA 80 E

Chart 6

Check ignition system

Check and if necessary

replace P.C.B.

Is LED1 light on?

Does sparking start

at burner?

YES

Does burner light?

Is LED2 on

after 10 seconds?

YES

Reset lockout

Does burner light now?

Is flame present before

lockout condition?

YES

Is LED2 on

without

the boiler sparking

YES NO

Go to chart 6

air pressure switch

Check and if necessary

replace safety thermostat

Check electrodes and

leads for damage

and correct connection

Check and if necessary

replace P.C.B.

Re-check

YES

Adjust with P4 ignition

burner pressure

Check and if necessary

clean burner

Check and if necessary

clean injectors

Check and if necessary

clean flame electrode

Check right position

of spark electrode

Check wires

Check gas supply

is live and purged

Check and if necessary

replace gas valve

MODENA 80 E

9. ELECTRICAL AND FUNCTIONAL SCHEME

9.01 Main components layout on electronic boards

Potentiometer adjustment

P1 = Central heating flow temperature adjustment P2 = Domestic hot water temperature adjustment P3 = Central heating flow output adjustment P4 = Ignition gas pressure adjustment P5 = Minimum adjustment pressure

JP01 ON = JP01 OFF =

JP02:

FAN

PC PNO L N HL HL MV1 MV2 MV3 MV4

X1 X2 X3 X4

12121312345678910 123

MF03F

Fig. 46

Delay between shutdown and re-ignition disabled

Delay between shutdown and re-ignition enabled

Jumper on for natural gas

RY101

X12

RY100

X10

111213

P1 CH

+- +-

123456789

Transformer

Temp. sensor

NTC

(34) (42)

678910

JP03

X11

Nat/LPG

JP02 JP01

temp. Ohm

10 °C 20 kOhm 25 °C 10 kOhm 60 °C 2,5 kOhm 80 °C 1,25 kOhm

P2 DHW

Jumper on for LPG

JP03 ON = Max temperature D.H.W. 62°C JP03 OFF= Max temperature D.H.W. 55°C (standard)

9.02 General wiring diagram

X2 X3

12121312345678910 12345678910111213

TEST

X12

123456789

X10

81 82

MF03F

JP02

JP01

JP03

Nat/LPG

X11

230V 24V

230V

24V

1 M

Blue

MV1

MV2

MV3

MV4

Blue

Y/G

136501144234

44491643

230V

50Hz

MODENA 80 E

IMPORTANT

ELECTRONIC BOARD.

IRREPARABLY DAMAGE THE

USE A ROOM THERMOSTAT (24 V)

THERMOSTAT TERMINALS WILL

CONNECTING 230 V TO THE ROOM

WITHOUT VOLTAGE TO THE CONTACTS.

Key

BLUE Blue

BR Brown

BL Black

W White

O Orange

R Red

G Green

V Violet

136 Flow meter

114 Low water pressure switch

98 Off/On/Reset switch

82 Sensor electrode

81 Ignition electrode

72 Room thermostat

Fig. 48

62 Time clock (option)

50 Central heating limit thermostat

49 Safety thermostat

Key

34 Central heating flow temperature sensor

32 Central heating pump

16 Fan

44 Gas valve

42 Domestic hot water flow temperature sensor

43 Air pressure switch

10. USER INSTRUCTIONS

MODENA 80 E

bar

°C °C

AB DC

abcde

LED

KEY DESCRIPTION

A Switch OFF/ON/RESET

Burner on indicator

Boiler shut down warning

Domestic hot water circuit on

Central heating stand-by

Central heating circuit on Insufficient pressure in central heating system

bar

Electric power supply

(Flashing light)

(Fixing light)

(Flashing light)

B Central heating flow

temperature regulation

C D.H.W. temperature

regulation

D Hydrometer

E Time clock (option)

Fig. 50

The boiler is designed for use with two types of gas: natural gas NG or propane (LPG). The type of gas can be selected when purchasing the boiler or the appliance can be converted later on site by a competent person. It operates with technologically advanced systems such as electronic control, safety and control devices. The boiler is fitted with automatic electronic ignition so there is no pilot to worry about. Pull down cover to reveal control facia panel. Make sure that the gas, water and electricity supplies to the boiler are turned on. The boiler pressure gauge (6) should read at least 1 bar.

Low pressure will be indicated by flashing light in the middle of the facia illuminating (

bar

Hot Water Only - “SUMMER” ( )

To obtain hot water only from the boiler, turn switch (1) to the on position. The top green light on the left side of the control panel is illuminated (power on ).

Turn the temperature regulator (2) to the position. Open a hot water tap, green light (tap symbol) comes on,

fan starts and burner will light. Indicated by flame symbol, green light coming on. The temperature of the hot water can be adjusted by turning the hot water thermostat (3) clockwise to increase and anti-clockwise to decrease the water temperature.

Heating and Hot Water - "WINTER” ( )

To obtain heating from the boiler, turn the temperature regulator (2) clockwise to the maximum position, ensure that any other heating controls e.g. room thermostats, clock etc. are in the on position.

The boiler may be in heating delay of three minutes as indicated by the red light (egg timer symbol) on the left of the facia panel. When this light goes out the green light (radiator symbol) will come on. The fan and pump will run and the burner will light indicated by the green flame symbol light. Adjust the temperature regulator to the desired

setting. (In winter do not run boiler below 50°C). If a hot water tap is opened whilst the boiler is running for heating

the pump will stop, suspending the heating phase and the boiler will give priority to hot water production. When the tap is closed the boiler will go into a three minute delay cycle before resuming for heating.

MODENA 80 E

Boiler lock out

In the event of the red lockout light ( ) coming on, the on/off/reset switch (3) should be turned clockwise against the spring tension to the reset position and released (this will put the boiler into three minute delay if in the heating

mode). If the lockout light ( ) illuminates repeatedly, contact an approved Férroli service engineer.

Frost Protection

In cold weather the boiler may appear to run when there is no demand for heating (i.e. clocks or room thermostats turned off). This is due to the central heating sensor going into frost protection mode. Once the boiler has reached

14°C or more it will close down until either the temperature again falls below 7°C or the clock or room thermostat

is turned on.

For this reason we recommend that the electricity to the boiler is left turned on. If you wish to turn off the electricity to the boiler in winter you should drain completely the heating and hot water circuits.

Cleaning

The casing requires no special cleaning, a wipe with a soft duster or damp cloth will suffice.

Maintenance

Férroli recommend that the appliance is serviced at least once every twelve months by a competent engineer.

Gas Supply

It is the law that all gas appliances are installed and serviced by a competent person in accordance with the Gas Safety Regulations (Installation & Use) 1996, and the manufacturers instructions. Failure to observe these requirements may lead to prosecution.

Electrical Supply

WARNING - This appliance must be earthed.

The electrical wiring must be carried out by a competent electrician.

The colours of the wires in the mains lead of this appliance may not correspond with the coloured markings identifying the terminal in the plug. Therefore, proceed as follows:

The wire coloured green and yellow must be connected to the terminal in the plug marked with either the letter E or by the earth symbol or coloured green or green and yellow. The wire coloured blue must be connected to the terminal marked either with the letter N or coloured black. The wire coloured brown must be connected to the terminal marked either with the letter L or coloured red.

MINIMUM CLEARANCE

The minimum clearance around the appliance should be as follows:

Sides 5mm Front 600mm Below 200mm Above 100mm Top Flueing

MODENA 80 E

Time Clock

A 24 hour time clock is fitted to the boiler to control the central heating, this will come into operation when the selector switch is turned to the position marked “heating timed and hot water”.

AUTO

To set time of day

1. Slide switch (A) to left position

2. Using button + and - adjust until the correct time is shown on display (B).

Pre Set Programmes. The timer is pre programmed with 3 ON and 3 OFF times.

12:00 - 12:00 16:30 : 22:30

To Set Own ON and OFF times. Symbol in Display = ON time

1. Slide switch (A) to right position (P)

2. Press button (P)

3. Press button (P)

12:31

RDP

6:30 - 8:30

Display

OVER RIDE

If these are suitable no programming is required and the slide switch (A) can be moved to the Auto position and the central heating will be ON for these periods. (12:00 - 12:00 will not switch on the boiler)

6:30

8:30

A Slide switch: set clock - auto - set programme B Display. Symbol in Display = Timer ON

P Select programme ON/OFF 1.....8

D Push buttons Time + Time E Override: Boiler will switch ON if it is OFF; and OFF if it is ON F I=Heating continuous - AUTO=Heating timed - O=Heating disabled R Reset (with pencil) only with switch A in set clock position

1.1 Use buttons + and - to set 1st ON time eg. 6:00

Display

2.1 Use buttons + and - to set OFF time, eg. 9:00

Display

3.1 Use button + and - to set 2nd ON time, eg. 12:30

6:00

9:00

Display

4. Press button (P)

Display

5. Press button (P)

Display

6. Press button (P)

Display

7. The timer can be programmed with up to 8 ON and

8 OFF times by repeating the above procedure.

Over ride

By pressing the over ride button (E) the timer programme is over ridden ie, if programme is in OFF time it will come ON and if in ON time will go OFF. The timer will revert back to it set programme on reaching the next ON or OFF time. When the programme is on over ride the sign will be shown in the display window (B).

Reset Button By the use of a pencil the reset button can be pushed (R). This will clear all programmes apart from those factory pre set.

Reset is only possible with switch (A) in set Clock position!

12:00

16:30

22:30

4.1 Use button + and - to set 2nd OFF time eg. 14:00

5.1 Use button + and - to set 3rd ON time, eg. 16:00

6.1 Use button + and - to set 3rd OFF time eg. 23:30

8. On completion of programming slide switch (A) to Auto po-

Display

sition, the time of day will be displayed and the central heating will switch ON and OFF according to the programme set.

12:30

14:00

16:00

23:30

IMPORTANT

"All CORGI Registered Installers carry a CORGI ID card and have a registration number. Both should be recorded in your central heating log book. You can check to the CORGI registered by calling CORGI on 01256 372300".

Should you require help with any difficulties

call our Technical Service Helpline on

0121 352 3200

Phone numbers:

Installer

Service Engineer

BECAUSE OF OUR CONSTANT ENDEAVOUR FOR IMPROVEMENT DETAILS MAY VARY SLIGHTLY FROM THOSE QUOTED IN THESE INSTRUCTIONS.

ALL SPECIFICATIONS SUBJECT TO CHANGE

Please note - to avoid incurring unnecessary expense, in the event of a boiler shut down, check this in

not caused by lack of electricity supply, gas supply or low water pressure before calling our Customer

Service Helpline.

Stockton Close, Minworth Industrial Park, Minworth, Sutton Coldfield, West Midlands B76 8DH

Tel: 0121 352 3200 Fax: 0121 352 3210

Ferroli Modena 80 E User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual