Ariston E COMBI 24 30 38 User Manual

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E-Combi

E-System

24/30/38

24/30

CONDENSING WALL HUNG

COMBINATION BOILER

G.C.N : 47 - 116 - 62 (24 kW)

G.C.N : 47 - 116 - 63 (30 kW)

G.C.N : 47 - 116 - 64 (38 kW)

CONDENSING WALL HUNG

O.H. BOILER

G.C.N : 41 - 116 - 34 (24 kW)

G.C.N : 41 - 116 - 35 (30 kW)

Country of destination GB, IE

overview

These instructions are suitable for E-COMBI and E-SYSTEM boilers :

Do not forget to complete the Benchmark Commisioning Checklist.

The Benchmark Scheme

Benchmark places responsibilities on both manufacturers and installers.

The purpose is to ensure that customers are provided with the correct equipment for their needs, that it is installed, commissioned

and serviced in accordance with the manufacturer’s instructions by competent persons and that it meets the requirements of the

appropriate Building Regulations.

The Benchmark Checklist can be used to demonstrate compliance with Building Regulations and should be provided to the customer

for future reference.

Installers are required to carry out installation, commissioning and servicing work in accordance with the Benchmark Code of

Practice which is available from the Heating and Hotwater Industry Council who manage and promote the Scheme.

Visit www.centralheating.co.uk for more information.

To the Installer

As part of the commissioning of this appliance it is vital that the Log Book is completed and given to the Householder. Please ensure that

your customer is aware of the importance of keeping the Log Book safe as a record of the installation and the appliance service history.

Please ensure that your customer is aware of the correct operation of the system, boiler and controls.

ARISTON recommend the use of protective clothing, when installing and working on the appliance i.e. gloves.

CUSTOMER CARE

ARISTON, as a leading manufacturer of domestic and commercial water heating appliances is committed to providing high quality products

and a high quality after sales service.

Advice on installation or servicing can also be obtained by contacting the ARISTON Technical and Customer Service Departments at High

Wycombe.

TECHNICAL DEPARTMENT

Tel: 0870 241 8180

Fax: 01494 459775

CUSTOMER SERVICE DEPARTMENT

Tel:

0870 600 9888

01494 459775

Fax:

GUARANTEE

The manufacturer’s guarantee is for 2 years from the date of installation or 18 months from the date of production. The

guarantee is invalidated if the appliance is not installed in accordance with the recommendations made herein or in a manner

not approved by the manufacturer.

To assist us in providing you with an eﬃcient after sales service, please register your boiler at www.ariston.co.uk/register

without delay.

CAUTION

In the United Kingdom, installation, start-up, adjustments and maintenance, must be performed by a competent person only,

in accordance with the current Gas Safety (Installation & Use) Regulations and the instructions provided.

In the Republic of Ireland, the installation and initial start up of the appliance must be carried out by a Competent Person in

accordance with the current edition of I.S.813 “Domestic Gas Installations”, the current Building Regulations, reference should

also be made to the current ETCI rules for electrical installation.

All Gas Safe registered installers carry an ID card, and have a registration number. Both should be recorded in your

boiler Log Book. You can check your installer is Gas Safe registered by visiting www.gassaferegister.co.uk or calling

direct on 0800 408 5500.

Improper installation may cause damage or injury to individuals, animals and personal property for which the manufacturer

will not be held liable.

To ensure eﬃcient and safe operation it is recommended that the boiler is serviced annually by a competent person.

If it is known that a fault exists on the appliance, it must not be used until the fault has been corrected by a competent person.

This instruction booklet is especially designed for appliances installed in the UK and the Republic of Ireland

overview

Advice for the installer

Symbols used on the data plate

The installation and ﬁrst ignition of the boiler must be

performedbyqualiﬁedpersonnelincompliancewithcurrent

national regulations regarding installation, and in conformity

with any requirements established by local authorities and public

health organisations.

After the boiler has been installed, the installer must ensure

that the end user receives the declaration of conformity and the

operating manual, and should provide all necessary information

as to how the boiler and the safety devices should be handled.

This appliance is designed to produce central heating hot water for

domestic use only.

It should be connected to a heating system and a distribution network

for domestic hot water, both of which must be compatible with its

performance and power levels.

The use of the appliance for purposes other than those speciﬁed is

strictly forbidden. The manufacturer cannot be held responsible for

any damage caused by improper, incorrect and unreasonable use of

the appliance or by the failure to comply with the instructions given

in this manual.

MAX

MIN

60/80°C

Installation, maintenance and all other interventions must be carried

out in full conformity with the governing legal regulations and the

instructions provided by the manufacturer. Incorrect installation

can harm persons, animals and possessions; the manufacturing

company shall not be held responsible for any damage caused as a

result. The boiler is delivered in a carton. Once you have removed all

the packaging, make sure the appliance is intact and that no parts are

missing. If this is not the case, please contact your supplier.

Keep all packaging material (clips, plastic bags, polystyrene foam, etc.)

out of reach of children as it may present a potential hazard.

In the event of a fault and/or malfunction, turn the appliance oﬀ, turn

oﬀ the gas cock and do not attempt to repair it yourself. Contact a

qualiﬁed professional instead.

Before any maintenance or repair work is performed on the boiler,

make sure you have disconnected it from the electricity supply

by switching the external bipolar switch to the “OFF” position and

removing the fuse.

All repairs, which should only be performed using original spare parts,

should be carried out by a qualiﬁed professional. Failure to comply

with the above instructions could compromise the safety of the

appliance and invalidate all liability on the part of the manufacturer.

In the event of any maintenance or other structural work in the

immediate vicinity of the ﬂue or ﬂue gas exhaust devices and their

accessories, switch the appliance oﬀ by switching the external bipolar

switch to the “OFF” position and shutting oﬀ the gas control valve.

When the work has been completed, a qualiﬁed technician must

check the eﬃciency of the ﬂue and the devices.

Legend :

1. Brand

2. Manufacturer

3. Boiler model - Serial number

4. Commercial reference

5. Certiﬁcation number

6. Destination country - gas category

7. Gas setting

8. Installation type

9. Electrical data

10. Maximum domestic hot water pressure

11. Maximum heating pressure

12. Boiler type

13. NOx class / Eﬃciency

14. Input rating nominal heating

15. Power ouput heating

16. DHW speciﬁc ﬂow rate

17. Boiler output eﬃciency

18. Input rating nominal DHW

19. Gases which may be used

20. Minimum ambient temperature for use

21. Max. central heating temperature

22. Max. domestic hot water temperature

Turn the boiler oﬀ and turn the external switch “OFF” to clean the

exterior parts of the appliance.

Clean using a cloth dampened with soapy water. Do not use

aggressive detergents, insecticides or toxic products. If the appliance

is used in full compliance with current legislation, it will operate in a

safe, environmentally-friendly and cost-eﬃcient manner.

If using kits or optional extras, make sure they are authentic.

CE labelling

The CE mark guarantees that the appliance conforms to the following

directives:

90/396/CEE

relating to gas appliances

2004/108/CEE

relating to electromagnetic compatibility

92/42/CEE

relating to energy eﬃciency

2006/95/CEE

relating to electrical safety

overview

Safety regulations

Key to symbols:

Failure to comply with this warning implies the risk of personal

injury, in some circumstances even fatal.

Failure to comply with this warning implies the risk of damage, in

some circumstances even serious, to property, plants or animals.

During all work carried out at a certain height (generally

with a diﬀerence in height of more than two metres), make

sure that parapets are used to surround the work area or

that individual harnesses are used to prevent falls. The space

where any accidental fall may occur should be free from

dangerous obstacles, and any impact upon falling should be

cushioned by semi-rigid or deformable surfaces.

Personal injury caused by falling from a height.

Install the appliance on a solid wall which is not subject to

vibration.

Noisiness during operation.

When drilling holes in the wall for installation purposes, take

care not to damage any electrical wiring or existing piping.

Electrocution caused by contact with live wires. Explosions, ﬁres

or asphyxiation caused by gas leaking from damaged piping.

Damage to existing installations. Flooding caused by water

leaking from damaged piping.

Make sure the workplace has suitable hygiene and sanitary

conditions in terms of lighting, ventilation and solidity of the

structures.

Perform all electrical connections using wires which have a

suitable section.

Personal injury caused by knocks, stumbling etc.

Protect the appliance and all areas in the vicinity of the work

place using suitable material.

Damage to the appliance or surrounding objects caused by

falling splinters, knocks and incisions.

Handle the appliance with suitable protection and with care.

Damage to the appliance or surrounding objects from shocks,

knocks, incisions and squashing.

Fire caused by overheating due to electrical current passing

through undersized cables.

Protect all connection pipes and wires in order to prevent

them from being damaged.

Electrocution caused by contact with live wires. Explosions, ﬁres

or asphyxiation caused by gas leaking from damaged piping.

Flooding caused by water leaking from damaged piping.

Make sure the installation site and any systems to which the

appliance must be connected comply with the applicable

norms in force.

During all work procedures, wear individual protective

clothing and equipment.

Personal injury caused by electrocution, falling splinters or

fragments, inhalation of dust, shocks, cuts, puncture wounds,

abrasions, noise and vibration.

Place all debris and equipment in such a way as to make

movement easy and safe, avoiding the formation of any piles

which could yield or collapse.

Damage to the appliance or surrounding objects from shocks,

knocks, incisions and squashing.

All operations inside the appliance must be performed with

the necessary caution in order to avoid abrupt contact with

sharp parts.

Electrocution caused by contact with live wires which have been

installed incorrectly.

Damage to the appliance caused by improper operating

conditions.

Use suitable manual tools and equipment (make sure in

particular that the tool is not worn out and that its handle

is ﬁxed properly); use them correctly and make sure they do

not fall from a height. Replace them once you have ﬁnished

using them.

Personal injury from falling splinters or fragments, inhalation of

dust, shocks, cuts, pricks and abrasions.

Personal injury caused by cuts, puncture wounds and abrasions.

Reset all the safety and control functions aﬀected by any

work performed on the appliance and make sure they

operate correctly before restarting the appliance.

Explosions, ﬁres or asphyxiation caused by gas leaks or an

incorrect ﬂue gas exhaust.

Damage or shutdown of the appliance caused by out-of-control

operation.

Before handling, empty all components that may contain hot

Damage to the appliance or surrounding objects caused by

falling splinters, knocks and incisions.

Use electrical equipment suitable for its intended use

(in particular, make sure that the power supply cable

and plug are intact and that the parts featuring rotary or

reciprocating motions are fastened correctly); use this

equipment correctly; do not obstruct passageways with the

power supply cable, make sure no equipment could fall from

a height. Disconnect it and replace it safely after use.

Personal injury caused by falling splinters or fragments,

inhalation of dust, knocks, cuts, puncture wounds, abrasions,

noise and vibration.

Damage to the appliance or surrounding objects caused by

falling splinters, knocks and incisions.

Make sure any portable ladders are positioned securely, that

they are suitably strong and that the steps are intact and not

slippery and do not wobble when someone climbs them.

Ensure someone provides supervision at all times.

water, carrying out any bleeding if necessary.

Personal injury caused by burns.

Descale the components, in accordance with the instructions

provided on the safety data sheet of the product used,

airing the room, wearing protective clothing, avoid

mixing diﬀerent products, and protect the appliance and

surrounding objects.

Personal injury caused by acidic substances coming into contact

with skin or eyes; inhaling or swallowing harmful chemical

agents.

Damage to the appliance or surrounding objects due to

corrosion caused by acidic substances.

If you detect a smell of burning or smoke, keep clear of the

appliance, disconnect it from the electricity supply, open all

windows and contact the technician.

Personal injury caused by falling from

(stepladders shutting accidentally).

height or cuts

Make sure any rolling ladders are positioned securely, that

they are suitably strong, that the steps are intact and not

slippery and that the ladders are ﬁtted with handrails on

either side of the ladder and parapets on the landing.

Personal injury caused by falling from a height.

Personal injury caused by burns, smoke inhalation, asphyxiation

product description

Control panel

E-COMBI

60°

70°

50°

80°

40°

90°

on/oﬀ

ꢀ

ꢂꢃ

ꢂꢁ

ꢂꢀ

ꢂꢉ

ꢀꢂ

ꢀ ꢆ

ꢀ ꢄ

ꢀ ꢀ

ꢀ ꢃ

ꢀ ꢁ

E-SYSTEM

60°

70°

50°

80°

40°

90°

on/oﬀ

Legend :

1. Green indicator : CH temperature and error indicator

2. ON/OFF button

3. Green indicator : ON/OFF

4. Pressure gauge

5. Winter / Summer switch - Heating temperature regulation knob

6. Domestic Hot Water adjustment knob (E-Combi models)

7. Time clock (E-Combi models)

8. Green indicator : ﬂame ON

Red indicator : lockout light

9. Yellow indicator : ﬂashing error light

10. RESET button

product description

Overall view

E-COMBI

E-SYSTEM

1. Flue connector

2. Manual air vent

3. Burner

13. D.H.W. Flow switch

14. Circulation pump with auto air vent

15. Diverter valve

4. Detection electrode

5. C.H. Return temperature probe

6. C.H. Flow temperature probe

7. Gas valve

8. Secondary heat exchanger

9. Trap

16. Low water pressure switch

17. Silencer (according to model)

18. Modulating fan

19. Ignition electrodes

20. Ignitor

21. Thermal fuse

10. C.H. pressure relief valve

11. Electrical box

22. Combustion analysis test point

12. C.H. circuit ﬁlter

product description

Minimum clearances

Overall Dimensions

In order to allow easy access to the boiler for maintenance operations,

the boiler must be installed in accordance with the clearances stated

to the left (opposite).

E-COMBI

200

120

200

120

180

450

150

315 mod. 24

385 mod. 30/35

65 67 67 65

E-SYSTEM

200

120

200

120

180

150

315 mod. 24

385 mod. 30

132

A. Central Heating Flow

B. Domestic Hot Water Outlet

C. Gas Inlet

D. Domestic Cold Water Inlet

E. Central Heating Return

product description

Technical Data

Model E-COMBI

CE Certiﬁcation (pin)

0085BR0347

Boiler type

B23-B33-C13-C33-C43-C53-C83

Max/min nominal caloriﬁc ﬂow rate (Pci)

Max/min nominal caloriﬁc ﬂow rate (Pcs)

22.0/5.5

28.0/6.5

31.1/7.2

30.0/6.5

33.3/7.2

27.4/6.2

29.5/6.9

30.0/6.0

97.9

31.0/7.5

24.4/6.1

25.0/5.5

27.8/6.1

21.6/5.2

23.5/5.8

25.0/5.0

97.9

34.4/8.3

38.0/7.5

42.2/8.3

30.3/7.3

33.1/8.0

38.9/7.1

98.0

Domestic hot water max/min nominal caloriﬁc ﬂow rate (Pci)

Domestic hot water max/min nominal caloriﬁc ﬂow rate (Pcs)

Max/min power output (80°C-60°C)

Max/min power output (50°C-30°C)

Domestic hot water max/min power output

Combustion eﬃciency (of ﬂue gas)

Nominal caloriﬁc ﬂow rate eﬃciency (60/80°C) Hi/Hs

98.0/88.2

107.0/96.4

108.0/97.3

101.0/90.9

95.0/85.5

98.0/88.2

105.3/94.8

110.3/99.3

98.2/88.4

95.6/86.1

97.6/87.9

106.9/96.3

107.2/96.5

103.1/92.8

96.8/87.2

Nominal caloriﬁc ﬂow rate eﬃciency (30/50°C) (condensation) Hi/Hs

Eﬃciency at 30% at 30°C (condensation) Hi/Hs

Eﬃciency at 30% at 47°C Hi/Hs

Minimum caloriﬁc ﬂow rate eﬃciency (60/80°C) Hi/Hs

Eﬃciency rating (dir. 92/42/EEC)

Sedbuk Band Rating

stars

band

****

A / 90.3

0.2

****

A / 90.1

0.1

****

A / 90,1

0.1

Loss when stopped (ΔT = 50°C)

Loss of burner gas when operating

Available air pressure

2.1

2.0

137

141

132

NoX class

class

°C

Flue gas temperature (G20) (80°C-60°C)

CO2 content (G20) (80°C-60°C)

9.0

9.6

CO content (0%O2) (80°C-60°C)

ppm

< 100

4.5

< 100

4.5

< 125

3,5

O2 content (G20) (80°C-60°C)

Maximum ﬂue gas ﬂow (G20) (80°C-60°C)

Excess air (80°C-60°C)

Kg/h

41.2

49.4

59.2

Expansion vessel inﬂation pressure

Maximum heating pressure

bar

Expansion vessel capacity

6.5

Maximum water capacity with in the appliance (75°C-35°C)

Min/max heating temperature (high temperature range)

Domestic hot water max/min temperature

Speciﬁc ﬂow rate of domestic hot water (ΔT=30°C)

Quantity of hot water ΔT=25°C

100/300

35/82

36/60

12.0

14.4

10.3

***

100/300

35/82

36/60

15.0

18.0

12.9

***

100/300

35/82

36/60

18.2

21.8

15.6

***

°C

l/mn

stars

l/mn

bar

V/Hz

Quantity of hot water ΔT=35°C

Hot water comfort rating (EN13203)

Hot water minimum ﬂow rate

< 2

Domestic hot water max/min pressure

Power supply frequency/voltage

Total electrical power absorbed

7/0.3

230/50

114

7/0.3

230/50

115

7/0.3

230/50

150

Minimum ambient temperature for use

Protection level for the electrical appliance

Weight

°C

X5D

35,5

product description

Model E-SYSTEM

CE Certiﬁcation (pin)

Boiler type

0085BR0347

B23-B33-C13-C33-C43-C53-C83

Max/min nominal caloriﬁc ﬂow rate (Pci)

22.0/5.5

24.4/6.1

28.0/6.5

31.1/7.2

Max/min nominal caloriﬁc ﬂow rate (Pcs)

Max/min power output (80°C-60°C)

Max/min power output (50°C-30°C)

21.6/5.2

23.5/5.8

27.4/6.2

29.5/6.9

Combustion eﬃciency (of ﬂue gas)

97.9

Nominal caloriﬁc ﬂow rate eﬃciency (60/80°C) Hi/Hs

98.0/88.2

107.0/96.4

108.0/97.3

101.0/90.9

95.0/85.5

98.0/88.2

105.3/94.8

110.3/99.3

98.2/88.4

95.6/86.1

Nominal caloriﬁc ﬂow rate eﬃciency (30/50°C) (condensation) Hi/Hs

Eﬃciency at 30% at 30°C (condensation) Hi/Hs

Eﬃciency at 30% at 47°C Hi/Hs

Minimum caloriﬁc ﬂow rate eﬃciency (60/80°C) Hi/Hs

Eﬃciency rating (dir. 92/42/EEC)

stars

band

****

A / 90.3

0.2

****

A / 90.1

0.1

Sedbuk Band Rating

Loss when stopped (ΔT = 50°C)

Loss of burner gas when operating

Available air pressure

2.1

137

141

NoX class

class

°C

Flue gas temperature (G20) (80°C-60°C)

CO2 content (G20) (80°C-60°C)

9.0

CO content (0%O2) (80°C-60°C)

ppm

< 100

4.5

< 100

4.5

O2 content (G20) (80°C-60°C)

Maximum ﬂue gas ﬂow (G20) (80°C-60°C)

Excess air (80°C-60°C)

Kg/h

41.2

49.4

Expansion vessel inﬂation pressure

Maximum heating pressure

bar

Expansion vessel capacity

6.5

Maximum water capacity with in the appliance (75°C-35°C)

Min/max heating temperature (high temperature range)

Domestic hot water max/min temperature

100/300

35/82

36/60

100/300

35/82

36/60

°C

Power supply frequency/voltage

Total electrical power absorbed

Minimum ambient temperature for use

Protection level for the electrical appliance

Weight

V/Hz

230/50

114

230/50

115

°C

X5D

installation

Flue

Reference Standards

Detailed information on ﬂue assembly can be found in the

“Connecting the Flue” section.

In the United Kingdom, the installation and initial start-up of the

boiler must be by a Gas Safe registered installer in accordance with

the installation standards currently in eﬀect, as well as with any and

all local health and safety standards i.e. Gas Safe.

In the Republic of Ireland the installation and initial start-up of the

appliance must be carried out by a Competent Person in accordance

with the current edition of I.S.813“Domestic Gas Installations”and the

current Building Regulations, reference should also be made to the

current ETCI rules for electrical installation.

The installation of this appliance must be in accordance with the

relevant requirements of the Local Building Regulations, the current

I.E.E. Wiring Regulations, the by-laws of the local authority, in Scotland,

in accordance with the Building Standards (Scotland) Regulation and

Health and Safety document No. 635, “Electricity at Work Regulations

1989”and in the Republic of Ireland with the current edition of I.S. 813

and the Local Building Regulations (IE).

The boiler must be installed so that the ﬂue terminal is exposed to the

free passage of external air at all times and must not be installed in

a place likely to cause nuisance. It must not be allowed to discharge

into another room or space such as an outhouse or closed lean-to.

Condensing boilers have a tendency to form a plume of water vapour

from the ﬂue terminal due to the low temperature of the ﬂue gasses.

The terminal should therefore be located with due regard for the

damage or discolouration that may occur to building within the

vicinity and consideration must also be given to adjacent boundaries,

openable windows the min acceptable clearances are shown

opposite.

N^OTE: THE FLUE MUST NOT BE INSTALLED IN A PLACE LIKELY TO CAUSE A NUISANCE AND

POSITIONED TO ENSURE THAT PRODUCTS OF COMBUSTION DO NOT DISCHARGE ACROSS

A BOUNDARY

C.O.S.H.H.

Materials used in the manufacture of this appliance are non-hazardous

and no special precautions are required when servicing.

It may be necessary to protect the terminal with a guard, if this is the

case it will be necessary to purchase a stainless steel terminal guard.

Reference should be made to the Building Regulations for guidance.

Codes of Practice

Installation should also comply with the following British Standards

Code of Practice:

BS 7593:1992 Treatment of water in domestic hot water central

heating systems

Ventilation

The room in which the boiler is installed does not require speciﬁc

ventilation. If the boiler is installed in a cupboard or compartment

ventilation is not required for cooling purposes.

BS 5546:1990 Installation of hot water supplies for domestic

purposes

BS 5440-1:2008 Flues

Gas Supply

The gas installation and tightness testing must be in accordance with

the requirements of BS6891. Ensure that the pipe size is adequate for

demand including other gas appliances on the same supply.

Electrical Supply

BS 5440-2:2009 Air supply

BS 5449:1990 Forced ciculation hot water systems

BS 6798:2009 Installation of gas ﬁred hot water boilers of rated

input not exceeding 70kW

BS 6891:1989 Installation of low pressure gas pipes up to 28mm

BS 7671:2001 IEE Wiring Regulations

BS 4814:1990 Speciﬁcation for expansion vessels

BS 5482:1994 Installation of L.P.G.

Domestic heating compliance guide

and in the Republic of Ireland in accordancce with the following

codes of practice:

The appliance requires an earthed 230V - 50 Hz supply and must be in

accordance with current I.E.E. regulations.

It must also be possible to be able to completely isolate the appliance

electrically.

Connection should be via a 3 amp double pole fused isolating switch

with contact separation of at least 3mm on both poles.

Alternatively, a fused 3 amp, 3 pin plug and unswitched socket may be

used, provided it is not used in a room containing a bath or shower, it.

It should only supply the appliance.

I.S. 813

Domestic Gas Installations

Water Supply

The boiler is suitable for sealed systems only. The maximum working

pressure for the appliance is 6 bar. All ﬁttings and pipework for the

appliance should be of the same standard. If there is a possibility of

the incoming mains pressure exceeding 6 bar, particularly at night,

then a suitable pressure limiting valve must be ﬁtted.

The boiler is designed to provide hot water on demand to multiple

outlets within the property. If there is a requirement for greater

demands, for example if the boiler has several bathrooms and

cloakrooms, a vented or unvented hot water storage system may be

used.

Avoid installing the boiler where the air inlet can be polluted by

chemical products such as chlorine (swimming pool area), or ammonia

(hair dresser), or alkalin products (launderette).

Showers

Any shower valves used with the appliance should be of a thermostatic

or pressure balanced type.

Refer to the shower manufacturer for performance guidance and

suitability.

installation

Flushing and Water Treatment

Location

The boiler is equipped with a stainless steel heat exchanger.

The detailed recommendations for water treatment are given in BS

7593:1992 (Treatment of water in domestic hot water central heating

systems); the following notes are given for general guidance.

If the boiler is installed on an existing system, any unsuitable additives

must be removed.

The boiler can be installed on any suitable internal wall (suitable

sound prooﬁng may be required when installing onto a stud partition

wall). Provision must be made to allow for the correct routing of the

ﬂue and siting of the terminal to allow the safe and eﬃcient removal

of the ﬂue products.

A compartment or cupboard may be used provided that it has been

built or modiﬁed for this purpose.

It is not necessary to provide permanent ventilation for cooling

purposes. Detailed recommendations are given in BS 5440 Part 2.

If it is proposed that it is to be installed in a timber framed building

then reference should be made to British Gas Document DM2, IGE/

UP/7 or advice sought from Gas Safe.

Under no circumstances should the boiler be ﬁred before the system

has been thoroughly ﬂushed; the ﬂushing procedure must be in line

with BS 7593:1992.

We highly recommend the use of a ﬂushing detergent appropriate for

the metals used in the circuit. These include cleansers produced by

Fernox BetzDearbon, whose function is to disolve any foreign matter

that may be in the system.

In hard water areas or where large quantities of water are in the

system the treatment of water to prevent premature scaling of the

main exchanger is necessary.

The formation of scale heat compromises the eﬃciency of the thermic

exchanger because small areas of scale cause a high increase of the

temperature of the metallic walls and therefore add to the thermal

stress of the heat exchanger.

Where a room sealed appliance is installed in a room containing

a bath or shower, the appliance and any electrical switch or

appliance control, utilising mains electricity should be situated

speciﬁcally in accordance with current IEE Wiring Regulations.

For unusual locations, special procedures may be necessary. BS

6798:2009 gives detailed guidance on this aspect.

Demineralised water is more aggressive so in this situation it is

necessary to treat the water with an appropriate corrosion inhibitor.

Any treatment of water by additives in the system for frost protection

or for corrosion inhibition has to be absolutely suitable for all metals

used in the circuit.

The use of a corrosion inhibitor in the sysem such as Fernox MB-

1, BetzDearborn Sentinel X100 or Fernox System Inhibitor is

recommended to prevent corrosion (sludge) damaging the boiler and

system.

If anti-freeze substances are to be used in the system, check carefully

that they are compatible with the metals used in the circuit.

ARISTON suggests the use of suitable anti-freeze products such as

Fernox ALPHI 11, which will prevent rust and incrustation taking place.

Periodicaly check the pH balance of the water/anti-freeze mixture of

the boiler circuit and replace it when the amount measured is out of

the range stipulated by the manufacturer (7 < pH < 8).

DO NOT MIX DIFFERENT TYPES OF ANTI-FREEZE

In under-ﬂoor systems, the use of plastic pipes without protection

against penetration of oxygen through the walls can cause corrosion

of the systems metal parts (metal piping, boiler etc), through the

formation of oxides and bacterial agents.

To prevent this problem it is necessary to use pipes with an “oxygen

proof barrier”, in accordance with standards DIN 4726/4729.

If pipes of this kind are not used, keep the system separate by

installing heat exchangers of those with a speciﬁc system water

treatment.

IMPORTANT

Failure carry out the water treatment procedure will invalidate

the appliance guarantee.

System Controls

The boiler is electrically controlled and is suitable for most modern

electronic time and temperature controls. The addition of such

external controls can be beneﬁcial to the eﬃcient operation of the

system. The boiler connections for external controls are 12V DC and

so only controls of 12V DC that have voltage free contacts should be

used. (page 25).

ARISTON supply a range of wired and wireless system controls.

Contact your supplier for more details.

installation

Condensate Discharge

2. External termination of condensate drainage pipe via internal

discharge branch (e.g. sink waste) and condensate trap.

The condensate discharge hose from the boiler must have a

continuous fall of 2.5^oand must be inserted by at least 50mm into

a suitable acid resistant pipe - e.g. plastic waste or overﬂow pipe.

The condensate discharge pipe must have a minimum diameter of

22mm, must have a continuous fall and preferably be installed and

terminated to prevent freezing.

The discharge pipe must be terminated in a suitable position:

i) Connecting into an internal soil stack (at least 450mm above the

invert of the stack). A trap giving a water seal of at least 75mm

must be incorporated into the pipe run, there also must be an air

beak upstream of the trap.

trap

ii) Connecting into the waste system of the building such as a

washing maching or sink trap. The connection must be upstream

of the washing machine/sink. If the connection is downstream of

the waste trap then an additional trap giving a minimum water

seal of 75mm and an air break must be incorporated in the pipe

run, as above.

iii) Terminating into a gully, below the grid level but above the water

level

iv) Into a soakaway

Note: If any condensate pipework is to be installed externally then

it should be kept to a minimum and be insulated with a waterproof

insulation and have a continuous fall. The total length of external

pipe used should not exceed 3 metres.

3. External termination of condensate drainage pipe via internal

discharge branch (e.g. sink waste - proprietary ﬁtting).

Some examples of the type of condensate terminations can be found

below.

1. Internal termination of condensate drainage pipe to internal

stack.

trap

4. External termination of condensate drainage pipe via condensate

trap

installation

Installing the Boiler

Connecting the boiler to the system

- Remove the boiler casing as described on page 16

- Remove the caps and connect the valves to the boiler using the

washers provided

- 4 x ﬁbre washers for the CH ﬂow and return, cold water inlet and hot

water outlet connections

Please check that you are familiar with the installation requirement

before commencing work (pages 7 - 13).

The installation accessories described in the following list are included

in the boiler packaging:

Hanging bracket

A paper template (showing the dimensions of the boiler with 5

mm side clearances)

Connection valves (compression)

Washers

Filling loop

Installation, Servicing and Operating Instructions

Flue gasket

E-COMBI

Note: Connections viewed from behind boiler

E-SYSTEM

Method of positioning the boiler on the wall

The paper template can be used to ensure the correct positioning of

kitchen cabinets etc.

The paper template has to be ﬁxed to the wall and used to locate the

position of the hanging bracket and the centre for the ﬂue hole.

Drill and plug the wall and secure the hanging bracket using the

screws provided ensure the hanging bracket is level. Remove the

boiler from its packaging and remove the front casing panel.

Place the boiler on the hanging bracket.

Note: Connections viewed from behind boiler

N^OTE: THE APPLIANCE MUST NOT BE FITTED ON A COMBUSTIBLE WALL SURFACE.

installation

Safety Valve Discharge and Condense Outlet

Gas connection

The pressure relief valve pipe is made of copper. It should terminate

below the boiler safely outside the premises. Care should be taken

that it does not terminate over an entrance or window or where a

discharge of heated water could endanger occupants or passers by.

Make sure, using the labels on the packaging and the data plate on

the appliance itself, that the boiler is in the correct country and that

the gas category for which the boiler was designed corresponds to

one of the categories available in the country where it will be used.

The gas supply piping must be created and measured out in

compliance with speciﬁc legal requirements and in accordance with

the maximum power of the boiler; you should also make sure that the

shut-oﬀ valve is the right size and that it is connected correctly.

Check that the supplied gas corresponds to the type of gas for which

the boiler was designed (see the data plate located on the appliance

itself).

Warning !

Do not apply heat to the copper safety valve outlet pipe whilst it

is connected to the 3 bar safety relief valve.

Fill the central heating and DHW system and bleed air from the system

as described in the Commissioning instructions (page 30).

The system should be carefully checked for leaks, as frequent reﬁlling

could cause premature system corrosion or unnecessary scaling of

the heat exchanger. The pipe from the trap should be connected to a

drain as described in the relevant regulations.

It is also important to check that the pressure of the gas (methane

or LPG) you will be using to feed the boiler is suitable, because if it

is insuﬃcient the power may be reduced, causing inconvenience for

the user.

Pay special attention not to bend the condensate drain pipe in such

a way as to interrupt the ﬂow. Please only use drain pipe material

compatible with condensate products (refer to BS 6798:2009).

The condensate ﬂow can reach 2 litres/hour because of the acidity of

the condensate products (Ph close to 2), take care before operation.

See page 13 for condensate discharge options.

Water connection

The illustration below shows the connections for the water and gas

attachments of the boiler. See valves conﬁguration on page 14.

Check that the maximum water mains pressure does not exceed 6 bar;

if it does, a pressure reducing valve must be installed.

For the measuring of the pipes and of the heating bodies in the

heating system, the residual head value should be calculated as a

function of the requested ﬂow rate, in accordance with the values

shown in the circulation pump graph (page 16).

E-COMBI

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remove the 2 screws A from the

transport bar

dispose of the transport bar and

reassemble the ﬁxing screws.

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A. Central heating Flow

B. Domestic Hot Water Outlet

C. Gas Inlet

D. Domestic Cold Water Inlet

E. Central Heating Return

F. Safety Valve Discharge

H. Drain Valve

I. Drain condensate

E-SYSTEM

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* - Connection for Filling Loop

installation

Instructions for opening the casing and performing an

internal inspection

Before performing any work on the boiler, ﬁrst disconnect it from the

electrical power supply using the external bipolar switch; removing

the fuse and shutting oﬀ the gas cock.

To access the inside of the boiler, the following is necessary:

1. Remove the casing by unhooking it from the control panel (a)

2. Loosen the two screws on the front casing (b), pull it forwards and

unhook it from the upper pins (c)

To calculate the size of the heating installation, refer to the "Available

pressure" graph below.

Graph representing the available circulation pump

pressure ΔT20^oC

mbar

500

450

400

350

3. Lower the control panel (d)

30-38 kW

30-35 kW

300

250

200

150

100

4. Unhook the two clips on the combustion chamber panel and lift

oﬀ (e).

24 kW

(a)

100

200

300

400

500

600

700

800

900

1000

1100 1200

l/h

Before the equipment is used, for the ﬁrst time the trap must

(b)

be ﬁlled with water. To do this, add approximately 1/4 litre of

water via the ﬂue outlet before ﬁtting the ﬂue system, or uns-

crew the cap on the trap positioned underneath the boiler, ﬁll

it with water and reﬁt it.

Warning!

Insuﬃcient water in the trap can temporarily cause the ﬂue

gas to be expelled into the surrounding ambient air.

(c)

(d)

(e)

installation

Water circuit diagram

E-SYSTEM

E-COMBI

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1. Manual air vent

2. Burner

3. Detection electrode

4. C.H. ﬂow temperature probe

5. C.H. return temperature probe

6. Secondary heat exchanger

7. C.H. pressure relief valve

8. By-pass

9. Drain valve

10. Condensate trap

11. C.H. circuit ﬁlter

12. D.H.W. Flow switch

13. Diverter valve

14. Low water pres switch

15. Circulation pump

16. Expansion vessel

17. Modulating fan

18. Ignition electrodes

19. Thermal fuse

installation

Connecting the Flue

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 outhouse 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

discolouration that might occur on buildings in the vicinity, it must

also be located in a place not likely to cause nuisance.

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

ﬂue terminal.

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 stainless

steel terminal guard must be ﬁtted.

Fig. 1

The minimum acceptable spacing from the terminal to obstructions

and ventilation openings are speciﬁed in Fig. 1.

- A Directly below an opening, window, etc

- B Horizontally to an opening, window, etc

- C Below gutters, soils pipes or drain pipes

- D Below eaves

- E From vertical drain pipe or soil pipe

- F From internal or external corner

- G Above ground, roof or balcony level

- H From a surface facing the terminal

- I From a terminal facing a terminal

- J Vertically from a terminal on the same wall

- K Horizontally from an terminal on the same wall

- L Fixed by vertical ﬂue terminal

300 mm

75 mm

200 mm

75 mm

300 mm

600 mm

1200 mm

1500 mm

300 mm

Where 2 or more vertical fanned draught chimney conﬁgurations

teminate in close proximity at the same height they shall be separated

by at least 300mm. Where any 1 vertical outlet is more than 300mm

above the other, then they shall be separated by at least 1500mm.

See table

180

118 mm

^{See table on page 2}4²

Fig. 2

Warning

Important

Ensure that the ﬂue is not blocked.

Ensure that the ﬂue is supported and assembled in accordance with

these instructions.

The exhaust gas ducts must not be in contact with or close to

inﬂammable material and must not pass through building structures

or walls made of inﬂammable material.

When replacing an old appliance, the ﬂue system must be changed.

installation

Fitting the Coaxial Flue

(Ø 60 / 100 Horizontal)

Fig. 3

Contents:

1x Silicone O-Ring (60mm)

1x Elbow (90°)

2x Wall Seals (Internal & External)

1x Flue Pipe including Terminal (1 metre - 60/100)

2x Flue Clamps

Installation without extension

4x Screws

2x Seals

Level

Once the boiler has been positioned on the wall, ﬁt the rubber ﬂue

seal into the internal ﬂue turret (see diagram opposite),

insert the elbow into the socket and rotate to the required position.

Note: It is possible to rotate the elbow 360° on its vertical axis.

150 mm

Using the ﬂue clamp, seals and screws supplied (Fig 4) secure the

elbow to the boiler.

Installation with extension

The 1 metre horizontal ﬂue kit (3318073) supplied is suitable for an

exact X dimension of 753mm.

s_*lo_pep_ne_te

Level

Measure the distance from the face of the external wall to the face

of the ﬂue elbow (X - Fig 2), this ﬁgure must now be subtracted from

753mm, you now have the total amount to be cut from the plain end

of the ﬂue.

Slope min 1° per metre

* pente 5 mm par mètre

max 3° per metre (1° = 17mm)

Draw a circle around the outer ﬂue and cut the ﬂue to the required

length taking care not to cut the inner ﬂue, next cut the inner

ﬂue ensuring that the length between the inner and outer ﬂue is

maintained. (Fig 4).

Clamp

Fig. 4

e.g.

X = 555mm

753-555 = 198mm (Length to be cut from the plain end of the ﬂue).

Once cut to the required length, ensure that the ﬂue is free from burrs

and reassemble the ﬂue. If ﬁtting the ﬂue from inside of the building

attach the grey outer wall seal to the ﬂue terminal and push the ﬂue

through the hole, once the wall seal has passed through the hole, pull

the ﬂue back until the seal is ﬂush with the wall. Alternatively, the

ﬂue can be installed from outside of the building, the grey outer seal

being ﬁtted last.

Screws

Seal

Should the ﬂue require extending, the ﬂue connections are push ﬁt,

however, one ﬂue bracket should be used to secure each metre of ﬂue.

Note: See table for maximum and minimum ﬂue runs.

In the event that extension pieces need to be shortened, they must

only be cut at the male end and it must be ensured that the inner and

outer ﬂue remain ﬂush.

installation

Fitting the 5” Flue (Ø 80 / 125 Horizontal/vertical)

Once the boiler has been positioned on the wall, it is necessary to in-

sert the Ø80/125 adaptor (Fig. 5) for both horizontal and vertical ﬂue

runs into the boiler ﬂue socket (not supplied with ﬂue kit - Part No

3318095).

Push the adaptor onto the boiler’s ﬂue connection, grease the seals

then add extensions or elbows as required, secure the adaptor, using

the clamp and screws provided.

Useable length of

vertical ﬂue 575 mm*

Total length of

vertical kit 1240 mm

To ﬁt extensions or elbows it is ﬁrst necessary to ensure that the lip

seal is ﬁtted correctly into the inner ﬂue, once veriﬁed, it is simply ne-

cessary to push them together, no clamps are necessary to secure the

ﬂue components.

180 mm

Before proceeding to ﬁt the ﬂue, ensure that the maximum ﬂue leng-

th has not been exceeded (see the tables) and that all elbows and

bends have been taken into consideration. For each additional 90° el-

bow 1 metre must be subtracted from the maximum ﬂue length, and

for each 45° 0.5 metres must be subtracted from the maximum ﬂue

length (the height of the vertical adaptor and a 45° bend can be seen

in Fig.6 and a 90° bend in Fig. 7).

Note: DO NOT cut the vertical ﬂue kit.

Fig. 5

Fitting the Coaxial Flue (Ø 60 / 100 Vertical)

Note: See table for maximum and minimum ﬂue runs.

Contents:

1x Silicone O-Ring (60mm)

1x Conical Adaptor (60/100mm)

1x Vertical Flue Kit (80/125mm)

3x Screws

The vertical ﬂue kit is supplied with a specially designed weather

proof terminal ﬁtted, which can be used either with a ﬂat roof or a

pitched roof.

The vertical ﬂue kits useable lengths with the pitched roof ﬂashings

are indicated in Fig. 7.

Total length

of Vertical Kit

1355 mm

Useable length

of Vertical ﬂue

690 mm*

180 mm

Fig. 6

Fig. 7

installation

Before proceeding to ﬁt the ﬂue, ensure that the maximum ﬂue

length has not been exceeded (see the tables) and that all elbows and

bends have been taken into consideration. For each additional 90°

elbow 1 metre must be subtracted from the maximum ﬂue length,

and for each 45° 0.5 metres must be subtracted from the maximum

ﬂue length (the height of the vertical adaptor and a 45° bend can be

seen in Fig. 8).

Fitting the Twin Pipe (Ø80 / 80)

Fig. 8a

Note: See table for maximum and minimum ﬂue runs.

Fig. 8

Where it is not possible to terminate the ﬂue within the distance

permitted for coaxial ﬂues, the twin ﬂue pipe can be used by ﬁtting a

special adaptor to the ﬂue connector and using the aperture for the

air intake located on top of the combustion chamber.

Mark the position of the ﬂue hole in the ceiling and/or roof (see Fig. 7

for distance from wall to the centre of the ﬂue).

Cut a 130mm diameter hole through the ceiling and/or roof and ﬁt

the ﬂashing plate to the roof.

Always ensure that the ﬂue is adequately supported, using one ﬂue

bracket per extension and avoiding low points. (ARISTON supply

suitable clamps as Part No. 3318015).

DO NOT cut the vertical ﬂue kit.

To connect the vertical ﬂue kit directly to the boiler, place the vertical

starter kit (Part No. 3318079) (see Fig. 7) onto the exhaust manifold

and secure with the clamp, ﬁt the vertical adaptor onto the vertical

starter kit (Note: there is no need to use a clamp to secure this as it

is a push ﬁt connection), the vertical ﬂue kit must then be inserted

through the roof ﬂashing, this will ensure that the correct clearance

above the roof is provided as the terminal is a ﬁxed height.

To utilise the air intake it is necessary to:

1) Take the air intake cover oﬀ the top of the appliance

2) Assemble the air inlet adaptor - see ﬁg. 8a

The twin ﬂue pipes can be ﬁtted with or without additional elbows

and need no clamps, simply ensure that the red o-ring is inserted in

the female end of the ﬂue pipe and push the extension piece fully

into the previous section of ﬂue pipe or elbow. Check that the o-ring

is not dislodged when assembling the ﬂue (greasing the seal will aid

assembly).

Should extensions be required, they are available in 1 metre (Part

No. 3318077) and 500mm (Part No. 3318078) lengths. They must be

connected directly to the vertical starter kit before connecting the

adaptor to allow the vertical ﬂue kit to be ﬁtted. In the event that

extension pieces need to be shortened, they must only be cut at the

male end and it must be ensured that the inner and outer ﬂue remain

ﬂush.

When running the twin ﬂue pipe vertically it can be converted back to

coaxial ﬂue to enable vertical termination with a coaxial kit by use the

pipe bridge (Twin - Coaxial Adaptor - Part No. 3318089).

When using the vertical ﬂue system, action must be taken to ensure

that the ﬂue is supported adequately to prevent the weight being

transferred to the appliance. Use 1 ﬂue bracket per extension.

It is not possible to terminate concentrically horizontally. Termination

is only possible with separate air and exhaust terminals.

When the ﬂue passes through a ceiling or wooden ﬂoor, there must

be an air gap of 25mm between any part of the ﬂue system and any

combustible material. The use of a ceiling plate will facilitate this.

Also when the ﬂue passes from one room to another a ﬁre stop must

be ﬁtted to prevent the passage of smoke or ﬁre, irrespective of the

structural material through which the ﬂue passes.

When siting the twin ﬂue pipe, the air intake and exhaust terminals

must terminate on the same wall, the centres of the terminals must

be a minimum of 280 mm apart and the air intake must not be sited

above the exhaust terminal (refer to Fig. 10). The air intake pipe can

be run horizontally, however, the terminal and the ﬁnal 1 metre of ﬂue

must be installed either horizontally or with a slight fall away from the

boiler to avoid rain ingress.

It is also strongly recommended that the air intake pipe run be

constructed of insulated pipe to prevent condense forming on the

outside of the tube.

installation

The maximum permissible ﬂue length for twin ﬂue is

dependent on the type of run used (see table below).

180

120

Fig. 9

For further information relating to ﬂue runs not illustrated,

please contact the Technical Department on 0870 241 8180.

For coaxial systems, the maximum ﬂue lengths listed in the

table below take into account an elbow.

For twin ﬂue systems the maximum ﬂue lengths listed in the

table below includes the exhaust gas/air intake terminal.

Type 5 outlets should respect the following instructions:

1- Use the same ø 80 mm ﬂue pipes for the air intakes and

exhaust gas ducts.

2- If you need to insert elbows in the air intake and exhaust

gas ducts, you should consider for each one the equivalent

length to be included in the calculation of developed

length.

Fig. 10

AIR INTAKE MUST NOT BE

FITTED ABOVE THE EXHAUST

AIR INTAKE

EXHAUST

3- The exhaust gas duct should jut above the roof by at least

0.5 m.

4- The intake and exhaust gas ducts in Type C13 and C53

must be installed on the same wall, or where the exhaust

is vertical and the air intake horizontal, the terminals must

be on the same side of the building.

AIR INTAKE

installation

Table of ﬂue gas exhaust duct lengths

Maximum Extension Exhaust-air (m)

Diameter of pipe

Type

E-COMBI 24

E-SYSTEM 24

E-COMBI 30

E-SYSTEM 30

(mm)

E-COMBI 38

MIN

MAX

MIN

MAX

MIN

MAX

C13

C33

0,5

ø 60/100

ø 80/125

Coaxial System

C13

C33

0,5

S1 = S2

0,5/0,5

1 + S2

S1 = S2

0,5/0,5

1 + S2

S1 = S2

0,5/0,5

1 + S2

C13

C33

ø 80/80

36/36

1/83

48/48

1/70

18/18

1/42

Twin-pipe System

C53

1/0,5

S1 = Air intake S2 = Flue gas exhaust

S1 = S2 - Air intake and ﬂue gas exhaust equal lengths

S1 + S2 - Air intake and ﬂue gas exhaust unequal lengths

Type of air suction/ﬂue gas exhaust ducting

Combustion air intake from outside

C13 Flue gas exhaust and air suction

duct through external wall in

the same range of pressure

C33 Flue gas exhaust andair suction

duct from outsidewithroof

terminalin the same range of

pressure

C53 Flue gas exhaust leading

outside and air suction duct

through external wall not in the

same range of pressure

installation

WARNING

Peripheral unit connection

To access peripheral unit connections carry out the following steps:

Before performing any work on the boiler, ﬁrst disconnect it

from the electrical power supply using the external bipolar

switch and remove the fuse.

Disconnect the boiler from the power supply

Remove the casing by unhooking it from the instrument panel

Rotate the control panel while pulling it forwards

Unscrew the three screws on the back cover of the instrument

panel

Electrical connections

For increased safety, ask a qualiﬁed technician to perform a thorough

check of the electrical system.

Unhook the right side clip and the right front clip; then lift the ﬂap

The manufacturer is not responsible for any damage caused by the

lack of a suitable earthing system or by the malfunctioning of the

electricity mains supply.

Make sure that the system is able to withstand the maximum power

used by the boiler (this is indicated on the appliance data plate).

Check that the section of the wires is suitable and is not less 0.75 mm²

The appliance must be connected to an eﬃcient earthing system if it

is to operate correctly.

The following connections are located here:

- the room thermostat 1.

Caution!

For the connection and positioning of the wires belonging

to optional peripheral units, please refer to the installation

manuals of these units.

The power supply cable must be connected to a 230V-50Hz network,

where the L-N poles and the earth connection are all respected.

Important!

In the event that the power supply cable has to be changed, replace it

with one with the same speciﬁcation.

Power supply cable

120

H05V2V2-F

140

Important!

The appliance is supplied with a ﬂy-lead already connected,

this must be connected to a 240V supply fused at 3 amp it

must give complete electrical isolation of the appliance,

by use of a fused double pole isolator having a contact

separation of at least 3mm in all poles or alternatively

by means of a 3A fused three pin plug and unswitched

shuttered socket outlet both complying with BS1363.

Theuseofmultiplugs, extensionleadsoradaptorsisstrictlyprohibited.

It is strictly forbidden to use the piping from the hydraulic, heating

and gas systems for the appliance earthing connection.

The boiler is not protected against the eﬀects caused by lightning. If

the boiler fuses need to be replaced, use 2A rapid fuses.

installation

Room Thermostat / Remote Clock Connection

The boiler connections for external controls are 12V DC and so only

controls of 12V DC that have voltage free contacts should be used.

The boiler connections for external controls are 12V DC and so only

controls of 12V DC that have voltage free contacts should be used.

To connect a room thermostat, it is necessary to:

1. Open the control panel

2. Loosen the cable clamp using a screwdriver and insert the wires

leading from the room thermostat

3. Connect the wires to the terminals as indicated in the ﬁgure below,

removing the link

4. If a remote time clock is to be ﬁtted, (using a volt free switching time

clock) connect the switching wires from the time clock following

points 1 - 3 above (Disconnect internal time clock)

5. If using an external time clock and room thermostat, these must be

connected in series as shown in diagram C, (Disconnect internal

time clock)

6. Ensure that they are well connected and not subject to stress when

the control panel is closed

N^OTE: WHEN CONNECTING THE BOILER TO EXTERNAL CONTROLS, DO NOT RUN 240V

CABLES FOR SWITCHING CIRCUITS (WHICH ARE LOW VOLTAGE) TOGETHER USE

SEPERATE CABLES TO PREVENT INDUCED VOLTAGE ON THE LOW VOLTAGE CIRCUITS.

Connector TA on Terminal block

(low voltage switching)

Connector TA on Terminal block

(low voltage switching)

Connector TA on Terminal block

(low voltage switching)

Note: y plan system switch 240v and are therefore not suitable

system control systems unless a suitable relay is used to switch the

low voltage control circuit.

Do not connect 240v to the TA1 switching circuit. Connectiong 240v

to the TA1 switching circuit will damage th P.C.B. and invalidate

appliance warranty.

installation

Electrical diagram

For increased safety, ask a qualiﬁed technician to perform a thorough

check of the electrical system.

The manufacturer is not responsible for any damage caused by the

lack of a suitable earthing system or by the malfunctioning of the

electricity mains supply.

C N 1 1

1 6 C N

2 4 C N

1 2 C N

Bk= Black

Rd = Red

Gr = Green

Bl = Blue

Br = Brown

Wh = White

Gry = Grey

commissioning

S Plan Wiring Diagram

Note: Y plan system not suitable. See notes on page 25

commissioning

Initial preparation

Filling of the DHW System (Combi only):

Close all hot water draw off taps;

Open the cold water inlet cock supplied with the connection kit;

Slowly open each draw off tap and close them only when clear water,

free of bubbles, is visible.

At the time of commissioning, complete all relevant sections of

the Benchmark Checklist located on the inside back pages of this

document.

ARISTON Thermo UK LTD Limited support the Benchmark

initiative. On pages pages 53 and 54 of this manual the Benchmark

Commissioning Checklist and Service interval Record can be

found. It is important that this is completed in the presence of your

customer, they are shown how to use it, and it is signed by them.

Please instruct your customer that they must have this manual with

them whenever they contact a service engineer or us.

Preliminary electrical system checks to ensure electrical safety must

be carried out by a competent person i.e. polarity, earth continuity,

resistance to earth and short circuit.

Gas Supply:

Inspect the entire installation including the gas meter and test for

tightness. The entire installation should be in accordance with the

relevant standards. In GB this is BS 6891 and in IE this is the current

edition of I.S.813.

The connection on the the appliance is a 15 mm nut and olive

located at the rear of the gas service cock.

If the gas supply 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.

Electricity supply

- Check that the voltage and frequency of the electricity supply

correspond to the data shown on the boiler data plate;

- Make sure that the earthing connection is eﬃcient.

Pipe work must be of an adequate size.

Pipes of less than 22 mm should not be used, final being 15 mm.

Open the gas cock (supplied with the connection kit) to the

appliance and check the gas connection on the appliance for leaks.

Filling the Heating System:

Water Treatment:

Remove the front casing panel and lower the control panel as

described on page 16).

The boiler is equipped with a stainless steel heat exchanger.

The detailed recommendations for water treatment are given in BS

7593:1992 (Treatment of water in domestic hot water central heating

systems); the following notes are given for general guidance;

Open the central heating flow and return cocks supplied with the

connection kit;

Lift the cap on the automatic air release valve and leave open

permanently;

Close all air release valves on the central heating system;

Gradually open the valves at the filling point (filling loop) until water

is heard to flow, do not open fully;

Open each air release tap starting with the lowest point and close

them only when clear water free of air is visible;

Purge the air from the pump by unscrewing the pump plug anti-

clockwise, also manually rotate the pump shaft in the direction

indicated by the pump label to ensure the pump is free;

Refit the pump plug;

If the boiler is installed on an existing system, any unsuitable

additives must be removed;

Under no circumstances should the boiler be fired before the system

has been thoroughly flushed; the flushing procedure must be in line

with BS7593:1992.

Firstly fill the central heating system with the power off, and flush

through cold, fill the central heating system again, adding a flushing

detergent, run the boiler on central heating until it reaches its

operating temperature and flush the system, refill the system with a

suitable corrosion inhibitor,

Continue filling the system until at least 1.5 bar registers on the

pressure gauge;

Inspect the system for water tightness and remedy any leaks

discovered.

N^OTE: FAILURE TO CARRY OUT THE FLUSHING PROCEDURE WILL RESULT IN THE WARRANTY

BECOMING VOID.

I^MPORTANT!

M^{ANUALLY VENT THE HEAT EXCHANGER AT THE MANUAL AIR VENT}. FAILURE TO VENT

ADEQUATELY MAY DAMAGE THE HEAT EXCHANGER (PAGE 7, LEGEND 2).

commissioning

First ignition operation

Date . . . . . . . . . . . .

Installer . . . . . . . . . .

1. Check the electrical supply.

Complete . . . . . .

2. Check the type of gas and

change the gas if necessary.

3. Check the gas tightness.

Complete . . . . . .

6. Measure the gas inlet pressure.

standing + warming pressure

5. Check the exhaust ﬂue.

See page 18

6. Fill the installation.

See page 30

Complete . . . . . .

9. Set the heating power.

See page 31

7. Check the hydraulic water

tightness.

8. Spin the pump.

Complete . . . . . .

10. Set up heating controls

Complete . . . . . .

11. Balance the central heating

circuit.

12. Check the boiler in DHW mode

(combi only)

Complete . . . . . .

13. Adjust DHW ﬂow rate on the

boiler (if necessary).

14. Analyse the combustion

(see page 33)

Complete . . . . . .

15. Check the ionisation current.

Complete . . . . . .

16. Explain to the end user the the

boiler operation.

17. At the time of commissioning, complete all relevant sections of the

Benchmark Checklist located on the inside back pages of this document.

Complete . . . . . .

commissioning

irst ignition

1. Make sure that:

60°

70°

50°

80°

40°

90°

The gas valve is closed;

The electrical connection has been properly carried out. Make sure

that the green/yellow earthing wire is connected to an eﬃcient

earthing system;

Use a screwdriver to lift the cap on the automatic air relief valve;

Switch on the boiler (by pressing the ON/OFF button), the green

led 3 will illuminate indicating that the boiler is ready to operate.

Turn the CH button 5 between min. and max position. The pump

will start and the burner will attempt to light, after 7 seconds

the boiler will lock out because there is no gas; the red Led 8

illuminates.

MIN

MAX

Adjust maximum C.H. power

MAX

Adjust Soft Ignition

60°

70°

50°

80°

40°

90°

Regulating the maximum central heating power & soft

ignition

on/oﬀ

ꢀ

ꢂꢁ

ꢁ

ꢂꢀ

ꢄ

ꢀꢂ

Regulate the maximum central heating power (between minimum

and maximum) to adjust the central heating power and the soft

ignition :

ꢀ ꢇ

ꢀ ꢆ

ꢈ

ꢀ ꢄ

ꢀ ꢀ

ꢀ ꢃ

ꢀ ꢂ

ꢀ ꢁ

Adjust the setting on the front panel

1. Push ON/OFF button for 10 seconds, the red reset led blinks.

2. Adjusting with the CH knob the maximum CH power between 0

and 99 % (see table).

3. Combi only adjusting with the DHW knob the soft ignition

between 0 to 99% (see table). The percentage level is visualized

by the green led.

Bleed the air from the radiators;

The ﬂue should be suitable and free from any obstructions;

2. Open the gas cock and check the connection seals, including the

boiler connection joints, making sure that the meter does not

detect any passage of gas. Eliminate any leaks.

3. Unlock the boiler by pushing the reset button. The burner will

light, if the ﬁrst start fails repeat the operation until the burner

lights.

4. To store the new values of settings, it is enough to push ON/OFF

button.

IMPORTANT!!

For E-SYSTEM boiler

To adjust the Soft Ignition it is necessary remove the cover using a

screwdriver, see ﬁg. a, and alter the soft ignition by adjusting the

potentiometer, see ﬁg. b.

Setting

Regulating the central heating ignition delay

ﬁg. a

ﬁg. b

on/oﬀ

Adjust the central heating ignition delay

1. Push ON/OFF button for 10 seconds, the red reset led

blinks.

2. Pressing the RESET button, the green led blinks.

3. Adjusting with the CH knob (Temporisation 0, 1, 2, 3, 4, 5, 6

minutes see table).

Green Leds

Temperature indicator

40 50 60 70 80 90 *

● = no led lit

● = lit

TAC

●

0 min

1 min

2 min

3 min

4 min

5 min

6 min

Green Leds

Temperature indicator

40 50 60 70 80 90 *

Max adjustable

power and soft

ignition

● = no led lit

● = lit

●

0 to 39 %

40 to 49 %

50 to 59 %

60 to 69 %

70 to 79 %

80 to 89 %

90 to 99 %

* This LED is red

commissioning

Test function and combustion analysis

The boiler has two pressure taps to measure the combustion gas

temperature, the combustive air and the concentrations of O₂and CO₂

on the outside of the ﬂue gas header.

To access these pressure taps, unscrew the screw which holds the

blanking cover and its seal together.

Only a 2.5 key

must be used

Minimum gas ﬂow combustion analysis

Activate the test function at minimum power in either heating or

domestic hot water production.

Wait for the boiler to stabilise before carrying out the combustion

analyses. Check the CO₂value according to the table above.

Important: do not remove silencer 17

N.B. When the combustion chamber is open, the CO₂value drops

by 0.3%.

If the values taken diﬀer from the table, adjust the gas valve following

the procedure described below.

Checking the gas setting

To carry out analyses of combustion, the test function must be

activated.

To adjust the CO₂value, remove cap, adjust the CO₂content to 0.2 by

turning setting screw 51 (4 mm allen key)

Maximum gas ﬂow combustion analysis

Activate the test function at the maximum heating power, pushing

for 5 seconds the RESET until the yellow led 9 blinks (also 60°C led is

lit to indicate that Chimney is at max. CH absolute) The rotate the CH

knob to the min., intermediate position or max position it’s possible

to switch between min, max CH absolute and max DHW power

(respectively the 40°C, 60°C and 80°C are lit to indicate the power

level.

- unscrew to lower the CO₂value

- tighten to increase the CO₂value

Set the content by turning the screw about a 1/4 of a turn then wait

after each change for approximately 1 minute for the CO₂value to

stabilise, then repeat.

Once the settings and analyses are complete, exit test mode by

pressing Reset and reposition the blanking cover and its seal correctly.

The function is automatically deactivated after 10 minutes or by

pressing the RESET button.

Wait for the boiler to stabilise before carrying out the combustion

analyses. Check the CO₂value according to the table below.

Important: do not remove silencer 17

N.B. When the front combustion chamber panel is open, the CO₂

value drops by 0.3%.

CO₂

maximum

minimum

CO₂(%)

G20

G31

9.0 0.2

10.7 0.2

9.0 0.2

10.0 0.2

9.4 0.2

10.6 0.2

Only a 4 key must be used

If the values taken diﬀer from the table, adjust

the gas valve following the procedure described

below.

Adjust the CO₂content to

0.2 by turning

Gas setting

G20

G31

G20

G31

G20

G31

setting screw 50 (2.5 mm allen key)

lower Wobbe index

15°C, 1013 mbar) (MJ/m3)

gas valve restrictor(ø)

- tighten to lower the CO₂value

45.67 70.69 45.67 70.69 45.67 70.69

- unscrew to increase the CO₂value

Set the content by turning the screw about a

1/4 of a turn then wait after each change for

approximately 1 minute for the CO₂value to

stabilise, then repeat.

2.65

2.33

0.58

3.80

1.94

1.71

0.43

3.17

2.96

0.69

4.50

2.33

2.17

0.50

4.02

3.28

0.79

5.25

2.95

2.41

0.58

max D.H.W

max C.H.

min

gas ﬂow max/min

(15°C, 1013 mbar)

(nat - m3/h) (GPL - kg/h)

boiler protection devices

Boiler protection devices

Important

The boiler is protected from malfunctioning by means of internal

checks performed by the electronic microprocessor P.C.B., which

stops the boiler from operating if necessary.

If this shutdown occurs frequently, contact an authorised

Technical Service Centre for assistance. For safety reasons, the

boiler will permit a maximum of 5 resets in 15 minutes (5 presses

In the event of the boiler being shut oﬀ in this manner, the led code

shows the type of shut-oﬀ and the reason behind it.

There are two types of shut-oﬀ:

of the

button).

Anti-frost Device.

When the electrical supply is turned on the anti-frost function acts

on the central heating ﬂow temperature probe, independently from

other safety devices.

Safety shut-oﬀ

This type of error is “volatile”, which means that the boiler starts up

again automatically as soon as the problem which caused the shut-oﬀ

is removed; the yellow led 9 blinks and green CH temperature leds 1

indicate the error code- see table below.

If the primary circuit temperature is between 3°C and 8°C the

pump will run (with the diverter valve switching between central

heating and hot water every 1 minute) until the temperature

reaches > 9°C.

If the ﬂow temperature remains between 3°C and 8°C the pump will

continue to run for a maximum of 20 minutes unless a temperature

above > 9°C is detected in the central heating ﬂow, after this the

burner will ﬁre (heating position) until a temperature of > 30°C is

detected.

If the central heating ﬂow temperature is < 3°C, the burner will ﬁre

(heating position) at minimum power until the temperature reaches

> 30°C, the burner will go out.

If lockout is caused by overheat the burner will not ﬁre but the pump

will continue to run (heating position).

As soon as the cause of the shut-oﬀ disappears, the boiler starts up

again and continues to operate normally.

Note : In the event of insuﬃcient water pressure inside the heating

circuit, the boiler will perform a safety shut-oﬀ(yellow led 9 blinks - leds

50-60 blink – see table). To re-pressurise the boiler, it will be necessary

to connect the silver ﬂexible hose supplied to the two isolating points

underneath the boiler, once the hose is connected, open up both of

the black quarter turn handles until the pressure reads 1.5 bar on the

pressure gauge. If the pressure drops very frequently, there may be a

water leak at some point in the system.

The anti-frost device activates only when the boiler operating

correctly :

- the system pressure is correct;

- the boiler is electrically powered;

- there is a supply of gas.

Shutdown

This type of error is “non-volatile”, which means that it is not removed

automatically.

The red led 8 light and green leds 1 indicate the error code- see table

below.

To restore normal operation press the

panel.

button on the control

Table summarising error codes

Green Leds

Temperature indicator

40 50 60 70 80 90 yellow red

Note

❍ = flashing light

● = lit

Reset

Description

Overheat

●

Insuﬃcient circulation

●

Insuﬃcient water pressure (request ﬁlling)

C.H. Flow temp. probe circuit open / short circuit

C.H. Return temp. probe circuit open / short circuit

External sensor circuit open / short circuit

Floor thermostat contact open

Heating delivery probe problem

Insuﬃcient circulation

●

EEPROM error

Communication error

●

Too many (> 5) resets in 15 minutes

Main P.C.B. error

Room sensor circuit open / short circuit

No ﬂame detected

Flame detected with gas valve closed

Flame lift

●

1st Ignition Failed

2nd Ignition Failed

Flame cut-oﬀ

Thermofuse open

●

Fan speed error

maintenance

Important

liquid is added to the water in the heating system in order to avoid

the need for repeated draining; when this liquid is used make sure it is

compatible with the stainless steel used for the bodywork of the boiler.

We recommend the use of anti-freeze products which contain

PROPYLENE GLYCOLS as these inhibit corrosion and that they are

used in conjunction with the anti-scaling and anti-corrosion function,

in the quantities suggested by the manufacturer, at the mimimum

temperature.

Maintenance is an essential part of the safe and eﬃcient operation of

the boiler and ensures its durability. It should be performed according

to the instructions given in current legislation. Perform combustion

analysis regularly in order to check the operating eﬃciency of the

boiler and to make sure the combustion is within the boundaries set

by current legislation.

Before beginning maintenance work:

Disconnect the appliance from the electricity supply by turning

the external bipolar switch to the “OFF”position;

Remove the fuse;

Close the gas valve and the central heating and domestic hot

water system valves.

Regularly check the pH level of the water/anti-freeze mix in the boiler

circuit and replace it when the value measured is lower than the limit

prescribed by the manufacturer.

DO NOT MIX DIFFERENT TYPES OF ANTI-FREEZE.

The manufacturer will not be held liable for any damage caused by

the appliance or the system due to the use of inappropriate anti-freeze

substances or additives.

After the work has been completed the initial settings will be restored.

General comments

It is recommended that the following inspections be carried out on the

boiler at least once a year:

Draining the domestic hot water system (E-COMBI)

Every time there is a danger of freezing, the domestic hot water system

must be drained as follows:

1. Check the seals in the water part and, if necessary, replace the

gaskets and restore the seal to perfect working order.

2. Check the seals in the gas part and, if necessary, replace the

gaskets and restore the seal to perfect working order.

3. Visually check the overall condition of the boiler.

4. Visually check the combustion and, if necessary, disassemble and

clean the burner.

Shut oﬀ the water mains inlet valve;

Open all the hot and cold water taps;

Empty the water from the lowest points of the system (where

applicable).

WARNING

5. Following the inspection detailed in point “3”, disassemble and

clean the combustion chamber, if necessary.

6. Following the inspection detailed in point “4”, disassemble and

clean the burner and injector, if necessary.

7. Cleaning the primary heat exchanger

8. Make sure the following heating safety devices are operating

correctly:

Before handling, empty all components which may contain hot water,

performing bleeding where necessary.

Descale the components in accordance with the instructions provided

on the safety data leaﬂet supplied with the product used, make sure

the room is well ventilated, wear protective clothing, avoid mixing

diﬀerent products, and protect the appliance and surrounding objects.

Seal all openings used to take a gas pressure reading or to make any

gas adjustments.

- temperature limit safety device.

9. Make sure that the following gas part safety devices are operating

correctly:

- absence of gas or ﬂame safety device (ionisation).

10. Check the eﬃciency of the domestic hot water production process

(test the ﬂow rate and temperature).

Make sure that the nozzle is compatible with the supplied gas.

If a smell of burning is detected or smoke is seen leaking from the

appliance, or there is a smell of gas, disconnect it from the electricity

supply, shut oﬀ the gas valve, open the windows and call for technical

assistance.

11. Perform a general inspection of the boiler operation.

12. Remove oxide from the detection electrode using an emery cloth.

13. After servicing, complete the relevant Service Interval Record

section of the Benchmark Checklist located on page 54 of this

manual.

Cleaning the primary exchanger

The inside of the primary exchanger is accessed by removing the

burner. Wash with water and detergent using a non-metallic riﬂe-type

brush, rinse with water.

14. These checks are not exhaustive. Further mechanical, electrical

and combustion maintenance checks may be required.

15. Analyse combustion, see page 33.

The trap is accessed by emptying the condensate bowl located in the

bottom section. Wash with water and detergent.

Replace the condensate collection bowl in its housing.

NB: In the event of prolonged of the appliance, the trap must be ﬁlled

before being used again.

A lack of water in the siphon is dangerous and may cause exhaust

gases to be released into the atmosphere.

Operational test

After having carried out the maintenance operations, ﬁll the heating

circuit at a pressure of approximately 1.5 bar and release the air from

the system.

Fill the domestic hot water system at the same time.

Begin operating the boiler.

If necessary, release the air from the heating system again.

Check the settings and make sure all the command, adjustment and

monitoring parts are working correctly.

Combustion Analyses

Details for ﬂue gas analyses can be found on page 33.

Using a suitable calibrated combustion analyser, perform a combus-

tion check. The CO₂valus can be found on page 33.

Check the ﬂue system is sealed and operating correctly.

if the vlues are correct the CO/CO₂ratio must be less than 0.004.

Where combustion readings cannot be achieved carrefully check items

such as the burner, heat exchanger, ﬂue system for defect.

Once satisfactors readings hane been achieved complete the relevant

service interval record selection of the Benchmark Commissioning

Checklist at the rear of this publication.

Draining procedures

The heating system must be drained using the following procedure:

- Switch oﬀ the boiler, make sure the external bipolar switch is in the

OFF position;

- Loosen the automatic air relief valve;

- Open the system drain oﬀ cock and collect the escaping water in a

container;

- Empty the water from the lowest points of the system (where

applicable).

If the system is to be left inactive in areas where the room temperature

may fall below 0°C during winter, we recommend that anti-freeze

maintenance guide

General access

Tools

Time

3 min

Unclip the cover to remove

Remove the two screws

Remove the front panel

Lower the electrical box

Remove the combustion chamber front panel by releasing the

clips

maintenance guide

Electrical unit

Control box access

Tools

Time

4 min

Remove the front panel as above and pivot

Remove the two screws and unlock the

four clamps to gain access to the control

box

the electrical box

Fuse

Tools

Time

5 min

Open the control box as above

Remove the fuse

maintenance guide

Main P.C.B.

Tools

Time

7 min

After opening the control boz, disconnect

the electrical plug connectors

Unscrew the two screwa and remove the

PCB

Display P.C.B.

Tools

Time

7 min

Unclip the cover to remove

Remove the two control knobs

Unscrew the four screws and pull the

assembly towards you

Disconnect the electrical plug connectors,

unlock the two clamps, and remove the

PCB

maintenance guide

Hydraulic Unit

Right hand hydraulic block assembly

Legend:

1. Diverter valve motor

2. Diverter valve

3. Auto air vent

4. Primary water pressure switch

5. Pump

6. Central heating ﬁlter

7. Non return valve

8. Non return valve assembly

9. DHW ﬂow switch assembly

10. Drain valve

11. Central heating return

12. Domestic cold water intlet

13. Domestic hot water outlet

14. Central heating ﬂow

maintenance guide

3 Way valve unit

Tools

Time

5 min

Unplug the diverter valve cable

Remove the clip and lift the motor from the diverter valve body

Drain the boiler (see 3.3).

aligned correctly

Remove the clip and lift the diverter valve from the assembly

Draining

Tools

Time

5 min

Turn the drain valve anti-clockwise to open and drain the water from

the boiler.

maintenance guide

Automatic air vent

Tools

Time

5 min

Drain boiler (see 3.3). Remove the clip and lift the AAV from the assembly

Primary water pressure sensor

Tools

Time

5 min

Drain boiler (see 3.3). Remove the ﬁxing clip, unplug the electrical connector and lift the sensor from the assembly

maintenance guide

Pump

Tools

Time

10 min

Drain boiler (see 3.3). Remove the clip and the two screws

Disconnect the pipe and then move the pump to the right

disengage

Remove the pump

Remove the sensor (see 3.5)

Remove the AAV (see 3.4)

maintenance guide

C.H. Filter

Tools

Time

5 min

After opening the control boz, disconnect

Unscrew the two screwa and remove the

PCB

the electrical plug connectors

D.H.W. Flow Switch assembly (E-COMBI)

Tools

Time

5 min

Drain boiler (see 3.3). Remove the clip and pull the ﬂow

Twist the ﬂow switch assembly to disengage

switch assembly towards you

maintenance guide

Left hand Hydraulic block assembly

Legend

1. Left hand hydraulic block

2. By-pass assembly

3. Safety valve

4. Central heating ﬂow

5. Domestic hot water outlet

Secondary Heat Exchanger (E-COMBI)

Tools

Time

10 min

Drain primary and domestic hot water circuits.

Remove the two screws and remove the heat exchanger

maintenance guide

Condensate Trap

Tools

Time

5 min

Unscrew the condense trap from the condense body

Safety valve

Tools

Time

5 min

Drain boiler (see 3.3). Disconnect the

discharge pipe

Remove the ﬁrst clip on the left and pull

the safety valve towards you

maintenance guide

By-Pass Assembly

Tools

Time

5 min

Drain boiler (see 3.3). Remove the second

clip and pull the assembly toward you

Push on the by-pass to disengage it

Temperature Sensor

Tools

Time

5 min

NTC1

NTC2

NTC1 : Black wires

NTC2 : Grey wires

Unplug the electrical connectors

Remove the clip and the temperature sensor

RESISTANCE (kOmh)

TEMPERATURE (°C)

1,5

maintenance guide

Manual Air vent

Tools

Time

5 min

Remove the clip and lift the manual air vent from the exchanger

Main Heat Exchanger

Tools

Time

20 min

Drain boiler (see 3.3). Remove the four clips Isolate the gas supply. Remove the four Remove the four screws to free the heat ex-

and disconnect the two pipes between the screws and disconnect the gas pipe from changer

exchanger and pump and between the ex- the gas valve

changer and left hand hydraulic block

Pull the heat exchanger towards you

Remove the clip and lift the manual air vent Twist the thermal fuse to remove

maintenance

Burner unit

Legend

1. Burner

2. Fan

3. Silencer

4. Gas inlet

5. Air inlet

6. Gas valve

7. Mixing tube

8. Detection electrode

9. Ignition electrode

10. Spark generator

maintenance guide

Spark generator

Tools

Time

5 min

Unplug the ignition electrode from the

spark generator

Remove the screw and the spark generator

Electrodes

Tools

Time

5 min

Unplug the electrodes

Remove the screws and pull the electrodes

towards you.

maintenance guide

Burner

Tools

Time

15 min

Remove the silencer

Isolate the gas supply. Remove the four Pull the assembly towards you

screws and disconnect the gas pipe from

the gas valve

Note: Any work carried out on the

combustion assembly requires

a combustion analysis check on

completion of work

Remove the three screws to free the burner Pull the burner toward you

door

Power

Length

Venturi

1.Stainless Steel Burner

24 KW

104.6 mm

Ø 42 mm

2. Ignition electrode

3.Detection electrode

30 KW

38 KW

135.8 mm

167 mm

maintenance guide

Fan

Tools

Time

15 min

Remove the combustion assembly

(see 4.3)

Remove the three screws to free the fan.

Twist the gas valve anti-clockwise to disengage it from

the fan

Legend:

1. Venturi

2. Gasket

3. Fan

Fan & Mixer venturi according to the model

Power Fan Venturi diameter

Model 24 EBM RG 128 45 W Ø 17 mm

Model 30

Model 38

EBM RG 128 45 W

Ø 21 mm

Ø 25 mm

maintenance guide

Gas valve

Tools

Time

15 min

Remove the combustion assembly

(see 4.3)

Twist the gas valve anti-clockwise to disconnect it from the

fan

Replacement gas valves are not

factory set and will need to be set

up (see page 33)

Legend

1. Venturi

Bayonet

connection

2. Gas valve

connecti

3. Solenoids

4. Inlet test nipple

5. Offset adjustment

6.Throttle adjustment

Note: When changing the gas valve, the new gas valve is not

preset. Ensure the maximum + minimum CO₂valves are set

up in accordance whit the commissioning procedure.

maintenance guide

Annual Maintenance

Plate heat exchanger

Primary Heat

exchanger

Maintenance Interval: As

necessary

How: To measure speciﬁ-

cation of DHW perfor-

mance.

Maintenance Interval:

Annually

How : Visual inspection /

Clean as necessary

By-pass & Safety valve

Maintenance Interval:

Annually

How: Visual inspection /

Clean as necessary

Condensate trap

Maintenance Interval:

Annually

Central heating ﬁlter

or after cleaning primary

heat exchanger

Maintenance Interval:

Annually

How: Visual inspection /

Clean as necessary /

Add water before

replacing

How: Visual inspection /

Clean as necessary

Flow switch operation

Maintenance Interval:

Annually

How: Visual inspection /

Clean as necessary

/ Check ﬂow rate

Expansion vessel

Maintenance Interval:

Annually

How: Check air pressu-

re is at 1 bar (System

drained)

Pump

Ignition & detection

electrodes

Maintenance Interval:

At the ﬁrst ignition and

annually

Maintenance Interval:

Annually

How: Visual inspection /

Clean as necessary / Di-

stance from the burner /

Ionisation current more

than 1 μA

How: Check that the

AAV is open /

Visual inspection / Clean

as necessary

Burner

Maintenance Interval:

Annually

How: Visual inspection /

Clean as necessary

Fan

Maintenance Interval:

Annually

How : Visual inspection /

Clean as necessary

maintenance guide

Fault ﬁnding

Overheat

Flame detected

with gas valve

closed

Ignition electrode/wiring connectors

Insuﬃcient

circulation

Water pressure

Ignition electrode wiring connection onto

main pcb

Bleed heat exchanger

Pump operation

CH return ﬁlter for blockages

Circulation around boiler (blockages)

ntc temperature sensors

Flame lift

Insuﬃcient working gas pressure

Check ﬂue system for correct assembly/

termination

CO2 settings

Insuﬃcient water

(request ﬁlling)

Water pressure gauge for correct pressure

Check for waterleaks on the entire system

Thermofuse open

Fan speed error

Check wiring and connections to

thermofuse

Check integriry of main heat exchanger

CH Flow temp.

Check connections and wiring to temp

probe circuit open/ sensors

Check fan

short circuit

Check wiring connections from fan to pcb

CH Flow temp.

probe circuit open/

short circuit

Resistance values of temp sensors

Heating delivery

probe problem

Details in maintenance guide in installation

manual

Floor thermostat

contact open

Check terminals TA2 for presence of link

wire

EEPROM Error

Check the EEPROM connection onto the

pcb

Communication

error

Check connection and wiring onto all

devices, main and display pcb

Main PCB error

Too many (>5)

Identify reason for lockout from table and

resets in 5 minutes check for relevant faults

No Flame detected Insuﬃcient working gas pressure

1st Ignition failed

Spark electrode/wiring connectors

2nd Ignition failed Ignition electrode/wiring connectors

Flame cut-oﬀ

Spark generator/wiring connectors

Check ﬂue system for correct assembly/

termination

Check earth

Gas valve

CO2 settings

Soft light rate

maintenance guide

GAS BOILER SYSTEM COMMISSIONING CHECKLIST

This Commissioning Checklist is to be completed in full by the competent person who commissioned the boiler as a means of demonstrating

compliance with the appropriate Building Regulations and then handed to the customer to keep for future reference.

Failure to install and commission this equipment to the manufacturer’s instructions may invalidate the warranty but does not affect statutory rights.

Customer Name

Address

Telephone Number

Boiler Make and Model

Boiler Serial Number

Commissioned by (print name)

Company Name

CORGI ID Number

Telephone Number

Company Address

Commissioning Date

To be completed by the customer on receipt of a Building Regulations Compliance Certiﬁcate :

Building Regulations Notiﬁcation Number (if applicable)

CONTROLS Tick the appropriate boxes

Time and Temperature Control to Heating

Room Thermostat and

Programmer/Timer

Programmable

Room Thermostat

Load/Weather

Compensation

Optimum Start

Control

Time and Temperature Control to Hot Water

Heating Zone Valves

Cylinder Thermostat and Programmer/Timer

Combination Boiler

Not Required

Provided

Fitted

Hot Water Zone Valves

Thermostatic Radiator Valves

Automatic Bypass to System

Boiler Interlock

ALL SYSTEMS

The system has been ﬂushed and cleaned in accordance with BS7593 and boiler manufacturer’s instructions

Yes

What system cleaner was used?

What inhibitor was used?

Quantity

litres

ft³/hr

CENTRAL HEATING MODE Measure and Record:

m³/hr

mbar

Gas Rate

Burner Operating Pressure (if applicable)

Central Heating Flow Temperature

Central Heating Return Temperature

Gas Inlet Pressure

mbar

°C

COMBINATION BOILERS ONLY

Is the installation in a hard water area (above 200ppm)?

If yes, has a water scale reducer been ﬁtted?

What type of scale reducer has been ﬁtted?

DOMESTIC HOT WATER MODE Measure and Record:

Gas Rate

Yes

ft³/hr

m³/hr OR

mbar OR

Burner Operating Pressure (at maximum rate)

Cold Water Inlet Temperature

Gas Inlet Pressure (at maximum rate)

mbar

°C

Hot water has been checked at all outlets

Water Flow Rate

Yes

Temperature

°C

l/min

CONDENSING BOILERS ONLY

The condensate drain has been installed in accordance with the manufacturer’s instructions and/or BS5546/BS6798

Yes

ALL INSTALLATIONS

If required by the manufacturer, record the following

CO₂

OR CO

ppm OR CO/CO₂Ratio

The heating and hot water system complies with the appropriate Building Regulations

Yes

The boiler and associated products have been installed and commissioned in accordance with the manufacturer’s instructions

The operation of the boiler and system controls have been demonstrated to and understood by the customer

The manufacturer’s literature, including Benchmark Checklist and Service Record, has been explained and left with the customer

Commissioning Engineer’s Signature

Customer’s Signature

(To conﬁrm satisfactory demonstration and receipt of manufacturer’s literature)

All installations in England and Wales must be notiﬁed to Local Authority Building Control (LABC) either directly or through a Competent Persons Scheme.

A Building Regulations Compliance Certiﬁcate will then be issued to the customer.

www.centralheating.co.uk

SERVICE RECORD

It is recommended that your heating system is serviced regularly and that the appropriate Service Record is completed.

Service Provider

Before completing the appropriate Service Record below, please ensure you have carried out the service as described in the manufacturer’s

instructions.

Always use the manufacturer’s speciﬁed spare part when replacing controls.

SERVICE 1 Date

Energy Efﬁciency Checklist completed?

Engineer Name

SERVICE 2 Date

Energy Efﬁciency Checklist completed?

Engineer Name

Yes

Company Name

Telephone Number

CORGI ID Number

Comments

Telephone Number

CORGI ID Number

Comments

Signature

SERVICE 3 Date

Energy Efﬁciency Checklist completed?

Engineer Name

SERVICE 4 Date

Energy Efﬁciency Checklist completed?

Engineer Name

Company Name

Telephone Number

CORGI ID Number

Comments

Telephone Number

CORGI ID Number

Comments

Signature

SERVICE 5 Date

Energy Efﬁciency Checklist completed?

Engineer Name

SERVICE 6 Date

Energy Efﬁciency Checklist completed?

Engineer Name

Company Name

Telephone Number

CORGI ID Number

Comments

Telephone Number

CORGI ID Number

Comments

Signature

SERVICE 7 Date

Energy Efﬁciency Checklist completed?

Engineer Name

SERVICE 8 Date

Energy Efﬁciency Checklist completed?

Engineer Name

Company Name

Telephone Number

CORGI ID Number

Comments

Telephone Number

CORGI ID Number

Comments

Signature

SERVICE 9 Date

Energy Efﬁciency Checklist completed?

Engineer Name

SERVICE 10 Date

Energy Efﬁciency Checklist completed?

Engineer Name

Company Name

Telephone Number

CORGI ID Number

Comments

Telephone Number

CORGI ID Number

Comments

Signature

SHORT LIST

407

401

537

543

530

538

136

135

589

590

517

112

134

111

625

615

607

616

502

506

110

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Professional Team Limited

Suites 9 & 10, Plaza 256

Blanchardstown Corporate Park 2

Ballycoolin

Dublin 15

Telephone: (01) 810 3723

Fax: (01) 810 3727

Ariston Thermo UK Ltd

Hughenden Avenue

High Wycombe

Bucks HP13 5FT

Telephone: (01494) 755600

Fax: (01494) 459775

Internet: www.ariston.co.uk

Internet: www.aristonthermo.ie

Technical Advice: 0870 241 8180

Customer Service: 0870 600 9888

Technical Advice: (01) 437 0121

Customer Service: (01) 437 0121

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