Ariston CLAS HE EVO, CLAS HE EVO 24, CLAS HE EVO 30, CLAS HE EVO 38, CLAS HE EVO SYSTEM 18 Installation And Servicing Instructions

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Page 1

Installation and Servicing Instructions

CLAS HE EVO CLAS HE EVO System

CONDENSING WALL-HUNG GAS BOILER

Country of Destination. GB/IE

G.C.N.:47-116-65 (24 kW) G.C.N.:47-116-66 (30 kW) G.C.N.:47-116-67 (38 kW) G.C.N.:41-116-36 (18 kW) G.C.N.:41-116-37 (24 kW) G.C.N.:41-116-38 (30 kW)

Page 2

INDEX

Overview .......................................................................................................3

General Information ...................................................................................4

Advice for the Installer ...............................................................................4

CE Labelling ...................................................................................................4

Data Plate Symbols .....................................................................................4

Safety Regulations ......................................................................................5

Product description .................................................................................6

Control Panel.................................................................................................6

Overall View ................................................................................................... 7

Overall Dimension ......................................................................................8

Minimum Clearances .................................................................................8

Technical Information ................................................................................9

Installation ................................................................................................ 11

Reference Standards ............................................................................... 11

Installing the Boiler .................................................................................. 14

Gas Connection ......................................................................................... 15

Water Connection .................................................................................... 15

Instructions for Opening the Casing and Performing an

Internal Inspection.............................................................................. 15

Under oor heating .................................................................................. 16

Water circuit diagram..............................................................................17

Connecting the Flue ................................................................................ 18

Fitting the Coaxial Flue (Ø 60/100 Horizontal) ...............................19

Fitting the 5” Flue (Ø 80/125 Horizontal / Vertical) ....................... 20

Fitting the Coaxial Flue (Ø 60/100 Vertical) ..................................... 21

Fitting the Twin Pipe (Ø 80/80) ............................................................ 22

Electrical Connections ............................................................................ 25

Peripheral Unit Connection .................................................................. 25

Room Thermostat Connection ............................................................ 26

Outdoor Sensor Connection ................................................................26

Cylinder connection ................................................................................ 26

Internal mechanical time clock Internal RF receiver for Ariston programmable

room thermostat .................................................................................. 27

Electrical Diagram .................................................................................... 28

Commissioning ....................................................................................... 32

Initial Preparation ..................................................................................... 32

Electricity Supply ...................................................................................... 32

Filling the Heating System .................................................................... 32

Filling of the DHW System .....................................................................32

Gas Supply ..................................................................................................32

Water Treatment ....................................................................................... 32

First Igniton Operation ........................................................................... 33

Ignition procedure ...................................................................................34

Test Function and Combustion Analysis .......................................... 35

AUTO Function ..........................................................................................37

Boiler Protection Devices ................................................................... 38

Boiler Protection Devices ......................................................................38

Table summarising error codes ...........................................................38

Anti-Frost Device ...................................................................................... 39

Settings - Adjustment - Problem Identi cation Menus

Accessing the Menus ..............................................................................40

Maintenance

General Comments .................................................................................. 47

Operational Test ........................................................................................ 47

Draining procedures ...............................................................................47

Cleaning the primary exchanger ........................................................ 47

Cleaning the trap ...................................................................................... 47

Maintenance Guide

General Access ..........................................................................................48

Electrical Unit ............................................................................................. 49

Hydraulic Unit ............................................................................................ 52

Main Heat Exchanger .............................................................................. 60

Burner Unit .................................................................................................61

Fan Unit ........................................................................................................ 64

Gas Valve ...................................................................................................... 65

Annual Maintenance ............................................................................... 66

Benchmark Commissioning Checklist .............................................. 68

Benchmark Service Interval Record ................................................... 69

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overview

These instructions are suitable for CLAS HE boilers : Do not forget the Log Book!

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 CUSTOMER SERVICE DEPARTMENT Tel: 0333 240 7777 Tel: 0333 240 8777 Fax: 01494 459775 Fax: 01494 459775

GUARANTEE

The manufacturer’s guarantee is for 5 years from the date of purchase. 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 e cient after sales service, please register the guarantee online at www.ariston.co.uk

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

All GAS SAFE registered installers carry a GAS SAFE 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 calling GAS SAFE directly 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 e cient 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

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overview

CE labelling

The CE mark guarantees that the appliance conforms to the following directives:

- 2009/142/CEE relating to gas appliances

- 2004/108/CEE relating to electromagnetic compatibility

- 92/42/CEE relating to energy e ciency

- 2006/95/CEE relating to electrical safety

Advice for the installer The installation and  rst ignition of the boiler must be performed by quali ed personnel in compliance with current 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 hot water for domestic use. 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 speci ed 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. 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 o , turn o the gas cock and do not attempt to repair it yourself. Contact a quali ed 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 quali ed 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 ducts or  ue gas exhaust devices and their accessories, switch the appliance o by switching the external bipolar switch to the “OFF” position and shutting o the gas control valve. When the work has been completed, ask a quali ed technician to check the e ciency of the ducting and the

devices. Turn the boiler o 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-e cient manner. If using kits or optional extras, make sure they are authentic.

Symbols used on the data plate

MIN

60/80°C

20 21 22

Legend :

1. Brand

2. Manufacturer

3. Boiler model - Serial number

4. Commercial reference

5. certi cation 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 / E ciency

14. Input rating nominal heating

15. Power ouput

heating

16. DHW speci c  ow rate

17. Boiler output e ciency

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

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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.

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,  res or asphyxiation caused by gas leaking from damaged piping. Damage to existing installations. Flooding caused by water leaking from damaged piping.

Perform all electrical connections using wires which have a suitable section.

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,  res 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.

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  xed properly); use them correctly and make sure they do not fall from a height. Replace them once you have  nished using them.

Personal injury from the falling splinters or fragments, inhalation of dust, shocks, cuts, pricks and abrasions. 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.

Personal injury caused by falling from a height or cuts (stepladders shutting accidentally).

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  tted with handrails on either side of the ladder and parapets on the landing.

Personal injury caused by falling from a height.

During all work carried out at a certain height (generally with a di erence 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.

Make sure the workplace has suitable hygiene and sanitary conditions in terms of lighting, ventilation and solidity of the structures.

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.

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.

Personal injury caused by cuts, puncture wounds and abrasions.

Reset all the safety and control functions a ected by any work performed on the appliance and make sure they operate correctly before restarting the appliance.

Explosions,  res or asphyxiation caused by gas leaks or an incorrect  ue gas exhaust. Damage or shutdown of the appliance caused by out-of-control operation.

Before handling, empty all components that may contain hot 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 di erent 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 burns, smoke inhalation, asphyxiation.

Page 6

product description

2 3

5 6

Control panel

Legend :

1. Display

2. Domestic Hot Water temperature adjustment button +/-

(only for Clas HE EVO models)

3. M

ODE button

(Operation mode selection (summer/winter)

4. Pressure gauge

5. Auto Function and/or Comfort Function enable/disable button

(Comfort function only for Clas HE EVO models)

6. ESC button - reserved for technical assistance

7. “encoder” programming knob

- reserved for technical assistance

8. OK button - reserved for technical assistance

9. ON/OFF button

10.

TIME CLOCK (CLAS HE Evo System models optional)

11. RESET button

12. Heating temperature adjustument button +/-

Digits indicating:

- boiler status and temperature indication (°C)

- error code signals (Err)

- menu settings Technical assistance request

Flame detected with indication of power used or indication of operation shutdown

Heating operation set

Heating operation active

Hot water operation set

Hot water operation active Hot Water Comfort activated

Boiler o with antifreeze function active

Antifreeze function activated

AUTO

AUTO function activated (Temperature regulation activated)

Clip-in solar connected (optional)

Note: A radio frequency (RF) Programmable Room Thermostat is available from Ariston stockists. The Receiver unit can be  tted in the time clock position (10)

Page 7

product description

Overall view

1. Flue connector

2. Manual air vent

3. Main heat exchanger

4. Detection electrode

5. C.H. Return temperature probe

6. C.H. Flow temperature probe

7. Silencer

8. Secondary heat exchanger

9. Gas valve

10. Trap

12. C.H. Pressure relief valve

14. C.H. Circuit  lter

16. Circulation pump with air release valve

17. D.H.W. Flow switch

18. Diverter valve

19. Low Water Pressure Switch

20. Modulating fan

21. Ignition electrodes

22. Ignitor

23. Thermal fuse

24. Combustion analysis test point

CLAS HE EVO

CLAS HE EVO SYSTEM

Page 8

product description

200

150

315 mod. 24

385 mod. 30/38

120 120

200

180

65 65 67 67

25 770

200

120 120

200

132 6567

Overall Dimensions

A. Central Heating Flow B. Domestic Hot Water Outlet C. Gas Inlet D. Domestic Cold Water Inlet E. Central Heating Return F. Safety Relief Valve

450

0 0 3

Minimum clearances

In order to allow easy access to the boiler for maintenance operations, The boiler must be installed in accordance with the clearances stated below.

CLAS HE EVO CLAS HE EVO SYSTEM

Page 9

product description

Technical Data

GENERAL NOTE

Model: CLAS HE EVO 24 30 38

CE Certi cation (pin) 0085CL0440

Boiler type

C13(X)-C23-C33(X)-C43(X)-C53(X)-C63(X)

C83(X)-C93(X)-B23-B23P-B33

POWER SPECIFICATIONS

Max/min nominal calori c  ow rate (Pci) Qn KW 22.0/5.5 28.0/6.5 31.0/7.5 Max/min nominal calori c  ow rate (Pcs) Qn KW 24.4/6.1 31.1/7.2 34.4/8.3 Domestic hot water max/min nominal calori c  ow rate (Pci) Qn KW 26.0/5.5 30.0/6.5 38.0/7.5 Domestic hot water max/min nominal calori c  ow rate (Pcs) Qn KW 28.9/6.1 33.3/7.2 42.2/8.3 Max/min power output (80°C-60°C) Pn KW 21.5/5.4 27.3/6.3 30.2/7.3 Max/min power output (50°C-30°C) Pn KW 23.3/5.7 29.7/6.8 33.0/7.9 Domestic hot water max/min power output Pn KW 26.0/5.5 29.3/6.3 38.0/7.5 Combustion e ciency (of  ue gas) % 97.8 97.8 97.9 Nominal calori c  ow rate e ciency (60/80°C) Hi/Hs % 97.5/87.8 97.6/87.8 97.6/87.9 Nominal calori c  ow rate e ciency (30/50°C) Hi/Hs % 105.8/95.3 106.0/95.5 106.4/95.8 E ciency at 30% at 30°C Hi/Hs % 107.7/97.0 107.7/97.0 107.7/97.0 E ciency at 30% at 47°C Hi/Hs % 97.7/88.0 97.6/87.9 97.6/87.9 Minimum calori c  ow rate e ciency (60/80°C) Hi/Hs % 97.6/87.9 97.5/87.8 97.5/87.8 E ciency rating (dir. 92/42/EEC) stars

**** **** **** Sedbuk class class A/90 A/90 A/90.1 Loss when stopped (∆T = 50°C) % Loss of burner gas when operating % 2.2 2.2 2.2

EMISSIONS

Available air pressure Pa 100 100 100 NoX class class 5 5 5 Flue gas temperature (G20) (80°C-60°C) °C 64 64 64 CO2 content (G20) (80°C-60°C) % 9.0 9.0 9.0 CO content (0%O2) (80°C-60°C) ppm 119 101 98 O2 content (G20) (80°C-60°C) % 4.5 4.5 4.5 Maximum  ue gas  ow (G20) (80°C-60°C) Kg/h 42.8 49.4 62.6 Excess air (80°C-60°C) % 27 27 27

HEATING CIRCUIT

Expansion chamber in ation pressure bar 1 1 1 Maximum heating pressure bar 2,5 2,5 2,5 Expansion chamber capacity L 6.5 6.5 6.5 Min/max heating temperature (high temperature range) °C 35 / 82 35 / 82 35 / 82 Min/max heating temperature (low temperature range) °C 20 / 45 20 / 45 20 / 45

DOMESTIC HOT WATER CIRCUIT

Domestic hot water max/min temperature °C 36 / 60 36 / 60 36 / 60 Speci c  ow rate of domestic hot water (∆T=30°C) l/mn 12.2 14.1 18.4 Quantity of hot water ∆T=25°C l/mn 14.5 16.8 21.3 Quantity of hot water ∆T=35°C l/mn 10.4 12.0 15.2 Hot water comfort rating (EN13203) stars *** *** *** Hot water minimum  ow rate l/mn <2 <2 <2 Domestic hot water max/min pressure bar 7 / 0.3 7 / 0.3 7 / 0.3

ELECTRICAL

Power supply frequency/voltage V/Hz 230/50 230/50 230/50 Total electrical power absorbed W 110 113 116 Minimum ambient temperature for use °C +5 +5 +5 Protection level for the electrical appliance PI X5D X5D X5D Weight kg 32 35 36

Page 10

product description

GENERAL NOTE

Model: CLAS HE EVO SYSTEM 18 24 30

CE Certi cation (pin) 0085CL0440

Boiler type

C13(X)-C23-C33(X)-C43(X)-C53(X)-C63(X)

C83(X)-C93(X)-B23-B23P-B33

POWER SPECIFICATIONS

Max/min nominal calori c  ow rate (Pci) Qn kW 18.0/4.5 22.0/5.5 28.5/6.5 Max/min nominal calori c  ow rate (Pcs) Qn kW 20.0/5.0 24.4/6.1 31.1/7.2 Max/min power output (80°C-60°C) Pn kW 17.6/4.4 21.5/5.4 27.3/6.3 Max/min power output (50°C-30°C) Pn kW 19.1/4.7 23.3/5.7 29.7/6.8 Combustion e ciency (of  ue gas) % 98.0 97.8 97.8 Nominal calori c  ow rate e ciency (60/80°C) Hi/Hs % 97.6/87.9 97.5/87.8 97.6/87.8 Nominal calori c  ow rate e ciency (30/50°C) Hi/Hs % 106,1/95.5 105.8/95.3 106.0/95.5 E ciency at 30% at 30°C Hi/Hs % 107.7/97.0 107.7/97.0 107.7/97.0 E ciency at 30% at 47°C Hi/Hs % 97.7/88.0 97.7/88.0 97.6/87.9 Minimum calori c  ow rate e ciency (60/80°C) Hi/Hs % 97.6/87.9 97.6/87.9 97.5/87.8 E ciency rating (dir. 92/42/EEC) stars **** **** **** Sedbuk Band / Rating Band / % A/90.1 A/90.0 A/90.0 Loss when stopped (∆T = 50°C) % Loss of burner gas when operating % 2.0 2.2 2.2

EMISSIONS

Available air pressure Pa 100 100 100 NoX class (5 = less than 70mg/kWh class 5 5 5 Flue gas temperature (G20) (80°C-60°C) °C 61 64 64 CO2 content (G20) (80°C-60°C) % 9.0 9.0 9.0 CO content (0%O2) (80°C-60°C) ppm 93 119 101 O2 content (G20) (80°C-60°C) % 4.5 4.5 4.5 Maximum  ue gas  ow (G20) (80°C-60°C) Kg/h 29.7 36.3 46.1 Excess air (80°C-60°C) % 27 27 27

HEATING CIRCUIT

DOMESTIC HOT WATER CIRCUIT ELECTRICAL

Power supply frequency/voltage V/Hz 230/50 230/50 230/50 Total electrical power absorbed W 106 113 116 Minimum ambient temperature for use °C +5 +5 +5 Protection level for the electrical appliance PI X5D X5D X5D Weight kg 32 32 35

Page 11

installation

Reference Standards

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 e ect, 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).

C.O.S.H.H.

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

Codes of Practive

Installation should also comply with the following British Standards Code of Practice:

BS 7593: Treatment of water in domestic hot water central heating systems BS 5546: Installation of hot water supplies for domestic purposes BS 5440-1: Flues BS 5440-2: Air supply BS 5449: Forced circulation hot water systems BS 6798: Installation of gas  red hot water boilers of rated input not exceeding 70kW BS 6891: Installation of low pressure gas pipes up to 28mm BS 7671: IEE Wiring Regulations BS 4814: Speci cation for expansion vessels BS 5482: Installation of L.P.G.

and in the Republic of Ireland in accordancce with the following codes of practice:

I.S. 813 Domestic Gas Installations

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).

Flue

Detailed information on  ue assembly can be found in the “Connecting the Flue” section. The boiler must be installed so that the  ue 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  ue terminal due to the low temperature of the  ue 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 should also be taken into consideration when siting the  ue.

The minimum acceptable clearances are shown below:

- A Directly below an opening, window, etc 300 mm

- B Horizontally to an opening, window, etc 300 mm

- C Below gutters, soils pipes or drain pipes 75 mm

- D Below eaves 200 mm

- E From vertical drain pipe or soil pipe 75 mm

- F From internal or external corner 300 mm

- G Above ground, roof or balcony level 300 mm

- H From a surface facing the terminal 600 mm

- I From a terminal facing a terminal 1200 mm

- J Vertically from a terminal on the same wall 1500 mm

- K Horizontally from an terminal on the same wall 300 mm

- L Fixed by vertical  ue terminal

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

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.

Ventilation

The room in which the boiler is installed does not require speci c ventilation. If the boiler is installed in a cupboard or compartment ventilation is not required for cooling purposes.

Page 12

installation

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

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.

Water Supply

The boiler is suitable for sealed systems only. The maximum working pressure for the appliance is 6 bar. All  ttings 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  tted. 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.

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.

Flushing and Water Treatment

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.

Under no circumstances should the boiler be  red before the system has been thoroughly  ushed; the  ushing procedure must be in line with BS 7593:1992.

We highly recommend the use of a  ushing 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 e ciency 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.

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.

Periodically 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- oor 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 speci c system water treatment.

IMPORTANT Failure to 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 bene cial to the e cient 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.

Location

The boiler can be installed on any suitable internal wall (suitable sound proo ng may be required when installing onto a stud partition wall). Provision must be made to allow for the correct routing of the  ue and siting of the terminal to allow the safe and e cient removal of the  ue products. A compartment or cupboard may be used provided that it has been built or modi ed 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 CORGI.

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 speci cally in accordance with current IEE Wiring Regulations.

For unusual locations, special procedures may be necessary. BS 6798:2000 gives detailed guidance on this aspect.

Page 13

installation

Codensate Discharge

The condensate discharge hose from the boiler must have a continuous fall of 2.5o and must be inserted by at least 50mm into a suitable acid resistant pipe - e.g. plastic waste or over ow 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.

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.

Some examples of the type of condensate terminations can be found below.

1. Internal termination of condensate drainage pipe to internal stack.

2. External termination of condensate drainage pipe via internal discharge branch (e.g. sink waste) and condensate siphon.

3. External termination of condensate drainage pipe via internal discharge branch (e.g. sink waste - proprietary  tting).

4. External termination of condensate drainage pipe via condensate siphon

Tundish

trap

Tundish

trap

Tundish

External pipe length max. 3 metres (must be insulated)

Condensate Discharge

Push  t the  exible condensate pipe into the outlet spigot on the appliance. Cut to length and locate outlet into a tundish

Page 14

installation

Installing the Boiler

Please check that you are familiar with the installation requirement before commencing work (pages 11 - 15).

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)

- Screws and washers

- Filling loop

- Installation, Servicing and User manual

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  xed to the wall and used to locate the position of the hanging bracket and the centre for the  ue 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.

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

Connecting the boiler to the system

- Remove the boiler casing as described on page 15

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

- 5 x  bre washers for the CH  ow and return, cold water inlet, gas and hot water outlet connections

Safety Valve Discharge

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.

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 31).

The system should be carefully checked for leaks, as frequent re lling 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.

Pay special attention not to bend the condensate silicone drain pipe is such a way as to interrupt the  ow. Please only use drain pipe material compatible with condensate products (refer to BS 6798:2000).

The condensate  ow 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.

Note: Connections viewed from behind boiler

- remove the 2 screws A from the transport bar

- dispose of the transport bar and reassemble the  xing screws.

Note: Connections viewed from behind boiler

CLAS HE EVO

CLAS HE EVO SYSTEM

Note.

Connections viewed from behind boiler.

Page 15

installation

Gas connection

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 speci c legal requirements and in accordance with the maximum power of the boiler. 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). 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 insu cient the power may be reduced, causing inconvenience for the user.

Instructions for opening the casing and performing an internal inspection

Before performing any work on the boiler,  rst disconnect it from the electrical power supply using the external bipolar switch removing the fuse and shutting o the gas valve. 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)

3. Lower the control panel (d)

4. Unhook the two clips on the combustion chamber panel and lift o (e).

(c)

Water connection

The illustration below shows the connections for the water and gas attachments of the boiler. See valves con guration 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  ow rate, in accordance with the values shown in the circulation pump graph.

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)

CLAS HE EVO

CLAS HE EVO SYSTEM

(a)

(b)

(d)

Page 16

installation

To calculate the size of the heating installation, refer to the "Available pressure" graph below.

Graph representing the available circulation pump pressure

T20

Before the equipment is used, for the  rst time the trap

must be  lled with water. To do this, add approximately 1/4 litre of water via the  ue outlet before  tting the  ue system, or unscrew the cap on the trap positioned underneath the boiler,  ll it with water and re t it

Warning! Insu cient water in the trap can temporarily cause the  ue gas to be expelled into the surrounding ambient air

Under oor heating

For appliances with under oor heating, it is possible but not necessary to  t a safety thermostat onto the under oor heating outlet. For the electrical connection of the thermostat see the section on “Electrical connections - page 25”.

If the outlet temperature is too high, the boiler will stop both domestic hot water and the heating production and the error code 1 16 “ oor thermostat contact open” will appear on the display. The boiler will restart when the thermostat is closed during automatic resetting.

If the thermostat cannot be installed, the under oor heating equipment must be protected by a thermostatic valve, or by a bypass to prevent the  oor from reaching too high a temperature.

0 100 200 300 400 500 600 700 800 900 1000

[mCE]

18/24

0,5

1,5

2,5

3,5

4,5

0 100 200 300 400 500 600 700 800 900 1000 1100

[mCE]

[l\h]

CLAS HE EVO

CLAS HE EVO SYSTEM

Page 17

installation

1. Manual air vent

3. Burner

4. Detection electrode

5. C.H.  ow temperature probe

6. C.H. return temperature probe

7. Secondary heat exchanger

8. C.H. pressure relief valve

10. By-pass

11. Drain valve

12. Condensate trap

13. Filling loop

14. C.H. circuit  lter

15. D.H.W. Flow switch

16. diver ter valve

17. water pressure sensor

18. circulation Pump

19. expansion vessel

20. modulating Fan

21. ignition elec trodes

22. thermal fuse

Water circuit diagram

A C E

D D E

Page 18

installation

Connecting the Flue

Flue System The provision for satisfactory  ue termination must be made as described in BS 5440-1. The appliance must be installed so that the  ue 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  ue terminal. The e ect of such “steaming” must be considered. If the terminal is less than 2 metres above a balcony, above ground or above a  at roof to which people have access, then a suitable stainless steel terminal guard must be  tted.

The minimum acceptable spacing from the terminal to obstructions and ventilation openings are speci ed in Fig. 1.

- A Directly below an opening, window, etc 300 mm

- B Horizontally to an opening, window, etc 300 mm

- C Below gutters, soils pipes or drain pipes 75 mm

- D Below eaves 200 mm

- E From vertical drain pipe or soil pipe 75 mm

- F From internal or external corner 300 mm

- G Above ground, roof or balcony level 300 mm

- H From a surface facing the terminal 600 mm

- I From a terminal facing a terminal 1200 mm

- J Vertically from a terminal on the same wall 1500 mm

- K Horizontally from an terminal on the same wall 300 mm

- L Fixed by vertical  ue terminal

Fig. 1

118 mm

150 mm

Minimum Length = 500 mm

180 mm

Fig. 2

Page 19

installation

Warning

The exhaust gas ducts must not be in contact with or close to in ammable material and must not pass through building structures or walls made of in ammable material. When replacing an old appliance, the  ue system must be changed.

Important

Ensure that the  ue is not blocked. Ensure that the  ue is supported and assembled in accordance with these instructions.

150 mm

118

* Min slope: 1˚

1˚= 17.5mm per metre

150 mm

* pente

Installation without extension

Installation with extension

Level

Fitting the Coaxial Flue (Ø 60 / 100 Horizontal)

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 4x Screws 2x Seals

Once the boiler has been positioned on the wall,  t the rubber  ue seal into the internal  ue 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.

Using the  ue clamp, seals and screws supplied (Fig 4) secure the elbow to the boiler.

The 1 metre horizontal  ue kit (3318073) supplied is suitable for an exact X dimension of 753mm.

Measure the distance from the face of the external wall to the face of the  ue elbow (X - Fig 2), this  gure must now be subtracted from 753mm, you now have the total amount to be cut from the plain end of the  ue.

Draw a circle around the outer  ue and cut the  ue to the required length taking care not to cut the inner  ue, next cut the inner  ue ensuring that the length between the inner and outer  ue is maintained. (Fig 4).

e.g. X = 555mm 753-555 = 198mm (Length to be cut from the plain end of the  ue).

Once cut to the required length, ensure that the  ue is free from burrs and reassemble the  ue. If  tting the  ue from inside of the building attach the outer wall seal to the  ue terminal and push the  ue through the hole, once the wall seal has passed through the hole, pull the  ue back until the seal is  ush with the wall. Alternatively, the  ue can be installed from outside of the building, the outer seal being  tted last.

Should the  ue require extending, the  ue connections are push  t, however, one  ue bracket should be used to secure each metre of  ue.

Note: See table for maximum and minimum  ue runs.

slope

Fig. 3

Note: A Plume management kit is available for 60/100 horizontal termination. Instructions for installation are supplied with the Plume management kit.

Page 20

installation

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

Once the boiler has been positioned on the wall, it is necessary to insert the Ø80/125 adaptor (Fig. 5) for both horizontal and vertical  ue runs into the boiler  ue socket (not supplied with  ue kit Part No 3318095).

Push the adaptor onto the boilers  ue connection, grease the seals then add extensions or elbows as required, secure the adaptor, using the clamp and screws provided.

To  t extensions or elbows it is  rst necessary to ensure that the lip seal is  tted correctly into the inner  ue, once veri ed, it is simply necessary to push them together, no clamps are necessary to secure the  ue components.

Before proceeding to  t the  ue, ensure that the maximum  ue 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 total  ue length, and for each 45° 0.5 metres must be subtracted from the total  ue 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  ue kit.

180 mm

Total length

of Vertical Kit

1240 mm

5" Adaptor Part no: 3318095

* This length will vary according to the type of ashing installed

Useable length

of Vertical ue

575 mm*

Fig. 5

Clamp

Seal

Screws

Fig. 4

Fig. 6

Fig. 7

Page 21

installation

Fitting the Coaxial Flue (Ø 60 / 100 Vertical)

Note: See table for maximum and minimum  ue runs.

Contents: 1x Conical Adaptor (60/100mm) 1x Vertical Flue Kit (80/125mm)

The vertical  ue kit is supplied with a specially designed weather proof terminal  tted, it can be used either with a  at roof or a pitched roof.

The Vertical  ue kits useable lengths with the pitched roof  ashings are indicated in Fig. 7.

Mark the position of the  ue hole in the ceiling and/or roof (see Fig. 7 for distance from wall to the centre of the  ue).

Cut a 130mm diameter hole through the ceiling and/or roof and  t the  ashing plate to the roof.

DO NOT cut the vertical  ue kit.

To connect the vertical  ue 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,  t 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  t connection), the vertical  ue kit must then be inserted through the roof  ashing, this will ensure that the correct clearance above the roof is provided as the terminal is a  xed height.

Should extensions be required, they are available in 1 metre (Part No. 3318077), 500mm (Part No. 3318078) and they must be connected directly to the vertical starter kit before connecting the adaptor to allow the vertical  ue kit to be  tted. 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  ue remain  ush.

When utilising the vertical  ue system, action must be taken to ensure that the  ue is supported adequately to prevent the weight being transferred to the appliance  ue connection by using 1  ue bracket per extension.

When the  ue passes through a ceiling or wooden  oor, there must be an air gap of 25mm between any part of the  ue system and any combustible material. The use of a ceiling plate will facilitate this. Also when the  ue passes from one room to another a  re stop must be  tted to prevent the passage of smoke or  re, irrespective of the structural material through which the  ue passes.

180 mm

Vert Adaptor (supplied with ue kit)

Vertical Starter Part No: 3318079

* This length will vary according to the type of ashing installed

Total length

of Vertical Kit

1355 mm

Useable length

of Vertical ue

690 mm*

Fig. 7

Fig. 8

Page 22

installation

Fitting the Twin Pipe (Ø80 / 80)

Note: See table for maximum and minimum  ue runs.

Where it is not possible to terminate the  ue within the distance permitted for coaxial  ues, the twin  ue pipe can be used by  tting a special adaptor to the  ue connector and using the aperture for the air intake located on top of the combustion chamber.

Always ensure that the  ue is adequately supported, using one  ue bracket per extension and avoiding low points. (ARISTON supply suitable clamps as Part No. 705778). To utilise the air intake it is necessary to:

1) Take the air intake cover o the top of the appliance

2) Assemble the  ange on the header supplied with the boiler

3) Insert the header on the tube or the elbow up until the lower stop (you do not have to use the washer).

4) Insert the elbow/header in the boiler air intake hole and fasten it with screws.

The twin  ue pipes can be  tted with or without additional elbows and need no clamps, simply ensure that the lip seal is inserted in the female end of the  ue pipe and push the extension piece fully into the previous section of  ue pipe or elbow, check that the lip seal is not dislodged when assembling the  ue (greasing the seal will aid assembly).

Twin pipe can also be converted back to Coaxial  ue to enable vertical termination with a coaxial kit by using the pipe bridge (Twin - Coaxial Adaptor - Part No. 3318089). When running the twin  ue pipe vertically.

It is not possible to terminate concentrically horizontally. Termination is only possible with separate air and exhaust terminals.

When siting the twin  ue 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  nal 1 metre of  ue 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.

Ensure the exhaust tube has a minimum fall back to the boiler of 1˚ / metre (1˚ = 17.5mm/metre)

The maximum permissible  ue length for twin  ue is dependent on the type of run used (see table on page 24).

For further information relating to  ue runs not illustrated, please contact the Technical Department on 0870 241 8180.

Page 23

installation

For coaxial systems, the maximum development value, mentioned in the table below also takes into account an elbow. For twin  ue systems the maximum development value, mentioned in the table includes the exhaust gas/air intake terminal.

Twin  ue systems outlets should respect the following instructions: 1- Use the same ø 80 mm  ue 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. 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 + 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.

EXHAUST

AIR INTAKE

AIR INTAKE MUST NOT BE

FITTED ABOVE THE EXHAUST

195

105

120

180

Fig. 9

Fig. 10

Page 24

installation

Table of  ue gas exhaust duct lengths

S1 = Air intake S2 = Flue gas exhaust

S1 = S2 - Air intake and  ue gas exhaust equal lengths S1 + S2 - Air intake and  ue gas exhaust unequal lengths

FLUE TYPE

Maximum Extension Exhaust-air (m)

Diameter of pipe

(mm)

CLAS HE EVO CLAS HE EVO SYSTEM

24 30 38 18 24 30

Coaxial System

C13 C33 C43

12 10 7 14 12 10 ø 60/100

C13 C33 C43

36 30 20 42 36 30 ø 80/125

Twin-pipe System

S1 = S2

ø 80/80

C13 24/24 26/26 16/16 36/36 24/24 26/26 C33 40/40 50/50 28/28 60/60 40/40 50/50 C43 24/24 26/26 16/16 36/36 24/24 26/26

C53

S1 + S2 S1 + S2

60 50 35 50 60 50 ø 80/80

TYPE C13

TYPE C33 TYPE C53

TYPE C33 TYPE C33

Page 25

installation

WARNING Before performing any work on the boiler,  rst disconnect it from the electrical power supply using the external bipolar switch and remove the fuse.

Electrical connections

For increased safety, ask a quali ed 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. Make sure that the system is able to withstand the maximum power absorbed 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 mm

The appliance must be connected to an e ecient earthing system if it is to operate correctly. 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 must be changed, replace it with one with the same speci cations.

Power supply cable

Important! The appliance is supplied with a  y-lead already connected, this must be connected to a 240V supply fused at 3 Amp and must facilitate completed 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.

The use of multiplugs, extension leads or adaptors is strictly prohibited. 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 e ects caused by lightning. If the mains fuses need to be replaced, use 2A rapid fuses.

Peripheral unit connection

To access peripheral unit connections carry out the following steps:

- 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

- Unhook the two clips “a”, rotate the cover “b” to have access to the peripherical connections

- Unscrew the two screws “c” and remove the cover “d” of the instrument panel to have access to the main P.C.B.

H05V2V2-F

BUS

TA2

TNK

SOL TA1

BUS

TA2

FLOOR

SETNK SOL TA1

CN1

emote Control

Outdoor sensor Underoor heating thermostat Room Thermostat 2

Room Thermostat 1

Peripheral connections:

BUS = Remote control connection FLOOR/TA2 = the under oor heating thermostat or the room

thermostat 2 (selected via parameter 223)

SE = the external sensor. SOL = Solar temperature probe TA1 = the room thermostat 1

Page 26

installation

Room Thermostat / Remote Clock Connection

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  gure below, removing the link

4. If a remote time clock is to be  tted, using a volt free switching time clock connect the switching wires from the time clock following points 1 - 3 above

5. If using an external time clock and room thermostat, these must be connected in series as shown in diagram C,

6. Ensure that they are well connected and not subject to stress when the control panel is closed

DO NOT CONNECT 240V TO ANY PERIPHERAL CONNECTIONS

Outdoor sensor connection

- Introduce the outdoor sensor wires

- Loosen the cable clamp using a screwdriver and insert the wires leading from the outdoor sensor one at a time.

- Connect the wires to the terminals as indicated in the  gure below;

- Make sure that they are well connected and that they are not subject to stress when the control panel lid is opened or closed;

- Close the  ap again, then replace the control panel cover and the front casing.

- Refer to page 39 for setting the parameters when using the outdoor sensor.

OTE: WHEN CONNECTING THE BOILER TO EXTERNAL CONTROLS, DO

NOT RUN 240V CABLES AND CABLES FOR SWITCHING CIRCUITS

(

WHICH ARE LOW VOLTAGE) TOGETHER, USE SEPERATE CABLES TO

PREVENT INDUCED VOLTAGE ON THE LOW VO LTAGE CIRCUITS.

Connector SE on PCB

Outdoor Sensor

Connector TA on PCB (low voltage switching)

Cylinder connection (CLAS HE EVO SYSTEM)

The boiler can be connected to a central heating system that uses two zone valves to allow connection to an indirect storage cylinder. There are two wiring diagrams shown, one for the connection to an Unvented Cylinder and one for connection to an open vented cylinder. In both cases the boiler connection is shown as TA1.

When connecting the boiler to an external cylinder do not run 240V cables and the cables for the TA1 together, use separate cables to prevent induced voltage on the low voltage switching circuit.

NOTE: THE USE OF A ‘Y’ PLAN SYSTEM IS NOT POSSIBLE WITH THE CLAS HE SYSTEM BOILER DUE TO THE LOW VOLTAGE SWITCHING OF THE APPLIANCE

UNLESS SUITABLE RELAY CONTROLS ARE USED.

Important!! Ensure that a balancing valve is  tted on the cylinder return and balanced correctly at commissioning stage.

(see p.25)

Page 27

installation

Fitting instructions for:

• Internal mechanical time clock

• Internal RF receiver for Ariston programmable

room thermostat

These instructions to be used in conjunction with the appliance installation instructions. Ensure the appliance is electrically isolated before working on the appliance. Remove the outer casing, and remove the front control panel by removing the 2 securing screws. Remove the clock blanking plate (or existing clock if  tting the RF receiver in a product with an existing mechanical clock) from the front control panel of the boiler. Using the 4 securing screws supplied with the clock accessory, secure the clock/RF receiver into position, ensuring the accessory is oriented correctly. Connect the wires to the clock accessory using the spade connectors (see  g. 1 for wiring con guration)

Fig. 1

Reassemble appliance, turn on electrical supply and operate accessory using instructions supplied.

1 Red Wire 2 Double Black wire 3 Black wire 4 Spare terminal 5 Blue wire

Rear view of

Time clock

Accessory

Page 28

installation

Electrical diagram

For increased safety, ask a quali ed 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.

Peripheral unit connection

LV connection

BUS

TA2 SETNK SOL TA1

CN1

Display

C.H. Return temp. probe

C.H. Flow temp. probe

Thermal fuse

D.H.W. ow switch

Switch ON/OFF

Rd Rd

BUS

- Remote Control (modulating device)

TA2/FLOOR

- Underoor heating thermostat

Room Thermostat 2

- Outdoor Sensor

SOL

- Solar temperature probe

TA1

- Room thermostat 1

HV connection

CN14

CN3

CN8

CN9

CN25

CN6

FLAME

CN19

CN4

Modulating Fan

Detection electrode

Gas valve

Ignitor

Diverter valve

Circulation Pump

CN2

CN11

FLAME

BUSTBTA2

FLOOR

SETNK SOL TA1

CN19

CN1

CN4

Peripheral unit

LV connections

HV connections

CN14

CN3

CN8

CN9

CN25

CN6

CN11

CLAS HE EVO

Page 29

installation

Peripheral unit connection

LV connection

BUS

TA2 SETNK SOL TA1

CN1

Display

C.H. Return temp. probe

C.H. Flow temp. probe

Thermal fuse

Switch ON/OFF

Rd Rd

BUS

- Remote Control (modulating device)

TA2/FLOOR

- Underoor heating thermostat

Room Thermostat 2

- Outdoor Sensor

SOL

- Solar temperature probe

TA1

- Room thermostat 1

HV connection

CN14

CN3

CN8

CN9

CN25

CN6

FLAME

CN19

CN4

Modulating Fan

Detection electrode

Gas valve

Ignitor

Circulation Pump

CN2

CN11

FLAME

BUSTBTA2

FLOOR

SETNK SOL TA1

CN19

CN1

CN4

Peripheral unit

LV connections

HV connections

CN14

CN3

CN8

CN9

CN25

CN6

CN11

CLAS HE EVO SYSTEM

Page 30

installation

Earths omitted for clarity

R/STAT

REMOTE 2 CHANNEL PROGRAMMER

TERMINAL

STRIP

C/H

2 PORT VALVE

240V

3AMP

L N

Remove

Link

CYL STAT

ON OFF

H/W

2 PORT

VALVE

Boiler

BUS

TA2

TNK SOL TA1

Note:

Boiler switching on TA1 is low voltage,

use a seperate cable to supply TA1.

Do not use 5 core cable.

MOTOR

OFF

S plan wiring diagram.

Page 31

installation

Earths omitted for clarity

R/STAT

REMOTE 2 CHANNEL PROGRAMMER

TERMINAL

STRIP

C/H

2 PORT VALVE

240V

3AMP

L N

Remove

Links

CYL STAT

ON OFF

H/W

2 PORT

VALVE

Outside sensor

Boiler

Change parameter:

223 from 0 to 1

521 from 1 to 3

421 from 1 to 0

Activate Auto Function

BUS TA2 SETNK SOL TA1

Note: Boiler switching on TA1 & TA2 is low

voltage. Use a separate cable to supply TA1 &

TA2. Do not mix high voltage and low voltage

wires in the same cable.

MOTOR

OFF

S plan wiring diagram using an outside sensor.

Page 32

commissioning

Initial preparation

Thermo UK Ltd support the benchmark initiative. On pages pages 69 and 70 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.

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 e cient.

Filling the Heating System:

Remove the front casing panel and lower the control panel as described on page 15). 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 anticlockwise, also manually rotate the pump shaft in the direction indicated by the pump label to ensure the pump is free; Refit the pump plug; 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.

MPORTANT!

MANUALLY VENT THE HEAT EXCHANGER AT THE MANUAL AIR VENT. FAILURE TO

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

Filling of the DHW System:

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.

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 15mm (22mm on 38Kw) 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.

Pipe work must be of an adequate size. The final pipe size must not be smaller than the appliance inlet size.

Open the gas cock (supplied with the connection kit) to the appliance and check the gas connection on the appliance for leaks.

Water Treatment:

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;

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,

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

WARRANTY BECOMING VOID.

Page 33