Glow-worm Xtrafast 96-120 User Manual

Instructions for Use

Installation and Servicing

To be left with the user

96 120

G.C. No. 47-047-25 G.C. No. 47-047-26

2000221595.11.01

Hab 255a

Fanned Flue Combination Boiler

This is a Cat II

The instructions consist of three parts, User, Installation and Servicing Instructions, which include the Guarantee Registration Card.

The instructions are an integral part of the appliance and must, to comply with the current issue of the Gas Safety (Installation and Use)

Regulations, be handed to the user on completion of the installation.

Appliance

2H3+

Guarantee Registration

Thank you for installing a new Glow-worm appliance in your home.

Glow-worm appliances' are manufactured to the very highest standard so we are pleased

to offer our customers' a Comprehensive First Year Guarantee.

In the centre pages are to be found your Guarantee Registration Card, which we recommend you complete and

return as soon as possible.

If this card is missing you can obtain a copy or record your registration by telephoning the Heatcall Customer

Service number 01773 828100.

Our Guarantee gives you peace of mind plus valuable protection against breakdown by covering the cost of:

✔

❑

✔

❑

✔

❑

One Contact Local Service

All replacement parts All labour charges All call-out charges

FOR 1ST YEAR GUARANTEE PROTECTION

CALL 0208 247 9857

Customer Services: Tel: (01773) 828100 Fax: (01773) 828070

Hepworth Heating Ltd.,

Nottingham Road, Belper, Derbyshire. DE56 1JT

General/Sales enquiries:

Tel: (01773) 824141 Fax: (01773) 820569

Important Information

Testing and Certification

This boiler is tested and certificated for safety and performance. It is therefore important that no alteration is made to the boiler, without permission, in writing, from Hepworth Heating Ltd.

Any alteration not approved by Hepworth Heating Ltd., could invalidate the certification, boiler warranty and may also infringe the current issue of the Statutory Requirements. The requirements are: The installation of this boiler must be carried out by a competent person in accordance with the current rules in force in the countries of destination at the time of installation. Manufacture's instructions supplied. Manufacture's instructions must not be taken as overriding statutory requirements.

Note: The boiler serial number is marked on the label attached to the inside of the drop down door. Refer to the 'Introduction' section for a description of the basic functions of the boiler. The 'Users' section describes how to safely operate the boiler.

Mandatory warning for CEE countries

Warning: This appliance is designed, approved and inspected to meet the requirements of the market. The identification plate

located on the inside of the appliance certifies the origin where the product was manufactured and the country for which it is intended. If you see any exception to this rule, please contact your nearest Glow-worm dealer. Thank you in advance for your assistance.

CE Mark

This boiler meets the requirements of Statutory Instrument No. 3083 The boiler (Efficiency) Regulations, and therefore is deemed to meet the requirements of Directive 92/42/EEC on the efficiency requirements for new hot water boilers fired with liquid or gaseous fuels.

Type test for purposes of Regulation 5 certified by: Notified body ****. Product/production certified by: Notified body ****. The CE mark on this appliance shows compliance with:

1. Directive 90/396/EEC on the approximation of the laws of the Member States relating to appliances burning

gaseous fuels.

2. Directive 73/23/EEC on the harmonization of the Laws of the Member States relating to the electrical equipment

designed for use within certain voltage limits.

3. Directive 89/336/EEC on the approximation of the Laws of the Member States relating to electromagnetic

compatibility.

Substances Hazardous to Health

The adhesives and sealants used in this appliance are cured and give no known hazard in this state. INSULATION PADS/CERAMIC FIBRE, GLASSYARN, MINERAL WOOL

These can cause irritation to skin, eyes and the respiratory tract. If you have a history of skin complaint you may be susceptible to irritation. High dust levels are usual only if the material is broken. Normal handling should not cause discomfort, but follow normal good hygiene and wash your hands before eating, drinking or going to the lavatory. If you do suffer irritation to the eyes or severe irritation to the skin seek medical attention. The insulation is composed of non-combustible material.

Spare Parts

REMEMBER, When replacing a part on this appliance, use only spare parts that you can be assured conform to the safety and performance specification that we require. Do not use reconditioned or copy parts that have not been clearly authorised by Hepworth Heating Ltd.

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Contents

CONTENTS DESCRIPTION SECTION PAGE No.

Introduction 4

INSTRUCTION

FOR USE

INSTALLATION

INSTRUCTIONS

Controls and Lighting 5 Clock-timer instructions for use 6 Draining 6 Safety Devices 6 Servicing and Maintenance 7

Technical Data 1 8 Dimensions 2 9 Heating System Design 3 9 Domestic Hot Water System Design 4 10 Boiler Schematic 5 10 Boiler Location, Flue and Ventilation 6 11 Fixing Jig Pack 7 12 Piping System Installation 8 12 Boiler Installation 9 14 Flue Installation 10 14 Electrical Connection 11 17 Commissioning 12 18 Safety Devices 13 22 Changing Gas Type 14 22 Settings 15 23

SERVICING

INSTRUCTIONS

Routine Cleaning and Inspection 17 24 Fault Finding 18 27 Wiring Diagram 19 29 Replacement of Parts 20 30 Spare Parts 21 40

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Introduction

The

XTRAFAST 96 and 120

combination boiler with electronic ignition providing central heating and instantaneous hot water. The boiler is equipped with a 4 litre domestic hot water storage vessel that ensures maximum hot water temperature stability during domestic demand.

The boiler is of the II as distributed in the United Kingdom.

The boiler has a fan assisted balanced flue which both discharges the products of combustion to and draws the combustion air from the outside of the room.

The boiler is suitable for top outlet flue connection only. Both the central heating and domestic hot water temperature

are user adjustable from the boiler control panel. Domestic hot water demand always has priority over heating

demand. The boiler is designed for use as part of a sealed water central

heating system with fully pumped circulation. The pump, expansion vessel and associated safety devices are all fitted within the boiler.

The boiler can be installed against either an external wall or on an adjacent inside wall, that is, the flue system will pass directly to the rear or to either side to the terminal fitted on the outside wall face.

The installation must be carried out by a competent person in accordance with the relevant requirements of The Building Regulations, The Water Byelaws, The Building Standards (Scotland) Regulations and any applicable local regulations.

These instructions should be carefully followed for the safe and economical use of your boiler.

2H3+

Electrical Supply

WARNING: This boiler must be earthed. All system components shall be of an approved type and shall

be connected in accordance with the current issue of BS7671 and any applicable local regulations.

All external wiring between the appliance and the electrical supply and earthing requirements shall comply with the current IEE Regulations.

Connection of the boiler and system controls to the mains supply must be through a common isolator and must be fused 3A, maximum. This method of connection must be by a fused double pole isolating switch, with a minimum contact separation

boiler is a wall mounted modulating

category for use with Natural Gas (G20)

of 3mm on both poles. The switch should be readily accessible and preferably adjacent to the appliance. It should supply the appliance only and be easily identifiable as so doing.

Alternatively, an unswitched shuttered socket outlet and 3A fused 3 pin plug, both to the current issue of BS1363 may be used provided that they are not used in a room containing a bath or shower.

Wiring to the boiler must be PVC 85 than 0.75mm

(24/0.20mm).

C insulated cable, not less

Gas safety (Installation and use) Regulations

In your interests and that of gas safety, it is the law that ALL gas appliances are installed and serviced by a qualified registered person in accordance with the above regulations.

Gas leak or fault

If a gas leak or fault exists or is suspected, turn the boiler off and consult the local gas supply company or your installation/ service company.

Air in the heating system

Persistent air in the heating system may indicate leaks in the system or corrosion taking place. Call your Installation/Servicing company.

Overheating safety

In the event of a problem, the overheating safety devices cause safety shutdown of the boiler. If this happens, call your Installation/Servicing company.

Boiler controls

The control panel, located at the lower front of the boiler casing, see diagram 1, allows the boiler to be started, shut down, controlled and monitored during use.

Flue

Do not obstruct the outside terminal of the boiler.

Ancillary equipment

A range of flue accessories are available including vertical flues, twin-pipe flues, bends etc.

For further information contact your supplier.

1 - On/Off button 2 - Summer/Winter mode selector 3 - Hot water temperature adjuster 4 - Hot water set point display 5 - Graphic display 6 - Heating temperature adjuster 7 - Heating set point display 8 - Display backlight 9 - Clock-timer

(refer to clock-timer instructions for use).

Diagram 1

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9900

1.5

Controls and Lighting

Lighting the boiler :

Make sure that:

• The boiler is connected to the electrical supply.

• The gas service cock is open. Then follow the instructions below :

Press the On/Off button (1)

The pressure must be between 1 and 2 bar. If not, the system must be filled by a competent person.

1.5

bar

To stop the boiler : Press button (1)

mode

1 9

0 1

Hab 264

Setting to the SUMMER position

(Hot water only)

Appuyer sur mode pour sélectionner la position été

Press the mode button to select the summer symbol

mode

1.5

bar

The flame symbol appears

Apparaît lorsque le brûleur

when the boiler is running

est en fonctionnement

Adjusting the hot water temperature

Press + or - to adjust the maximum temperature

Appuyer sur + ou - pour ajuster la température

of the hot water (38°C to 60°C)

maximale de l'eau chaude sanitaire (38°C à 60°C)

Visual indication of set temperature

Visualisation de la température demandée

Setting to the WINTER position

Press the mode button to select the winter symbol

Appuyer sur mode pour sélectionner la position hiver

The actual temperature

Température actuelle

of the heating system

dans le circuit chauffage

Adjusting the heating temperature

Press + or - to adjust the maximum temperature

Appuyer sur + ou - pour ajuster la température

of the heating (38°C to 87°C)

maximale souhaitée du circuit chauffage

(Heating + hot water)

°C

Visual indication of set temperature

Visualisation de la température demandé

1.5

bar

Illuminates when

Apparaît lorsque le

the boiler lights

brûleur fonctionne

mode

°C

mode

°C

To obtain domestic hot water, open a hot water tap. Hot water always has priority over central heating.

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Hab 261

Clock-timer instructions for use

The boiler must be conected to the electrical supply and switched on.

Setting the time

Rotate the clock actuater mechanism clockwise, by hand, until the current time is indicated by the arrow, see diagram 2.

Note: The time is set in 24 hour format, for example, 1300 for 1pm.

Reg 049

Diagram 2 Diagram 3

Setting the programme "On" and "Off" times

• Select the "On" times by pushing the white tappets to the outside, see diagram 2.

• Select the 'Off' times by pushing the white tappets to the inside,

see diagram 2. The clock shown in diagram 2 is set as follows: ON - 07.00am to 09.00am (7-9) OFF - 09.00am to 4.00pm (9-16) ON - 4.00pm to 10.00pm (16-22) OFF - 10.00pm to 07.00am (22-7)

To override or advance the clock

The clock has a manual On/ Off switch, see diagram 3, which operates as follows :

Upper position Heating On/Off as set by the tappets.

Middle position Heating Off continuously

Lower position Heating On continuously

Reg 050

Draining

Protection against freezing

If the boiler is to be out of use for any long periods during severe weather conditions, it is recommended that the whole system, including the boiler, be drained to avoid the risk of freezing.

If in doubt, consult your servicing company.

Safety Devices

Air flow rate safety device

If an obstruction, even partial, of the flue occurs, for any reason, the built in safety system of the boiler will turn the boiler OFF and the fan will continue to run. The boiler will be ready to operate when the fault has been cleared.

Overheat safety

In case of boiler overheating, the overheat thermostat will turn the boiler off. The thermostat, located on the heat exchanger flow pipe, will need to be manually reset. To have this done call a qualified service engineer or Heatcall (Glow-worm’s own service organisation) using the telephone number behind the controls cover door or on the front cover of this booklet.

In case of power supply failure

The boiler no longer operates. As soon as power supply is restored, the boiler will be automatically restarted.

Frost protection

The

XTRAFAST

protects the boiler from freezing. If the boiler is to be left and there is a risk of frost, ensure that the gas and electrical supplies

has a built in frost protection device that

Draining and filling

Caution: The boiler is installed as part of a sealed system which must only be drained and filled by a competent person.

are left connected. The frost protection device will light the boiler when the temperature of the boiler water falls below 6°C. When the temperature reaches 16°C, the boiler stops.

Note : This device works irrespective of any room thermostat setting and will protect the complete heating system.

Heating safety valve

CAUTION: A heating safety valve with a discharge pipe is fitted

to this boiler. The valve MUST NOT BE TOUCHED except by a qualified

registered person. If the valve discharges at any time, switch the boiler off and isolate it from the electrical supply. Contact your installation/service company.

Pressure relief valve

CAUTION: A domestic hot water pressure relief valve, with a

discharge pipe is fitted to this boiler. The valve MUST NOT BE TOUCHED except by a qualified

registered person. If the valve discharges at any time, switch the boiler off and isolate it from the electrical supply. Contact a qualified service engineer or Heatcall (Glow-worm’s own service organisation) using the telephone number behind the controls cover door or on the front cover of this booklet.

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Servicing and Maintenance

To ensure the continued efficient and safe operation of the appliance it is recommended that it is checked and serviced as necessary at regular intervals. The frequency of servicing will depend upon the particular installation conditions and usage, but in general once a year should be enough.

If this appliance is installed in a rented property there is a duty of care imposed on the owner of the property by the current issue of the Gas Safety (Installation and Use) Regulations, Section 35.

Servicing/maintenance should be carried out by a competent person in accordance with the rules in force in the countries of destination.

To obtain service, please call your installer or Heatcall (Glowworm’s own service organisation) using the telephone number behind the controls cover door.

Please be advised that the ‘Benchmark’ logbook should be completed by the installation engineer on completion of commissioning and servicing.

All CORGI Registered Installers carry a CORGI ID card, and have a registration number. Both should be recorded in your boiler Logbook. You can check your installer is CORGI registered by calling CORGI direct on: 01256 372300.

1 Technical Data

Cleaning

WARNING: This appliance contains metal parts (components) and care should be taken when handling and cleaning with particular regard to edges of sheet metal parts to avoid any possiblity of personal injury.

The boiler casing can be cleaned using a mild liquid detergent with a damp cloth, followed by a dry cloth to polish.

Do not use any form of abrasive or solvent cleaner as you may damage the paint work.

Boiler casing

CAUTION. Do not remove or adjust the casing in any way, as

incorrect fitting may result in faulty operation. If in doubt, consult your installation/service company.

Heating

Heating output ajustable from ... (kW) 10,4 11,7

to ... (kW) 27,6 34,6

from ... (BTU/H) 35,485 39,920

to ... (BTU/H) 94,170 118,053 Efficiency (%) ** ** Maximum heating temperature (°C) 87 87 Expansion vessel effective capacity (l) 7 12 Expansion vessel charge pressure (bar) 0,5 0,5 Maximum system capacity at 75°C (l) 160 275 Safety valve,

maximum service pressure (bar) 3 3 Products outlet diameter (mm) 60 60 Fresh air inlet diameter (mm) 100 100

Hot water

Hot water output

automatically variable from ... (kW) 10,4 11,7

to ... (kW) 27,6 34,6

from ... (BTU/H) 35,485 39,920

to ... (BTU/H) 94,170 118,053 Maximum hot water temperature (°C) 60 60 Specific flow rate (for 30°C temp rise)

(l/min.) 13,2 16,5 Threshold flow rate (l/min.) 1 1 Nominal water flow rate (l/min.) 11,3 16,5 Maximum supply pressure (bar) 8 8 Minimum operating pressure (bar) 0,7 0,7

XTRAFAST 96

XTRAFAST 120

Natural Gas (G20)

Ø Burner injector (mm) 1,20 1,20 Inlet pressure (mbar) 20 20 Burner pressure (mbar) 13,8 14,1 Gas rate maximum (m3/h) 3,20 3,98 Gas rate minimum (m3/h) 1,32 1,48

Electrical supply (V) 230 230 Maximum absorbed power (W) 220 220 Level of protection IP44 IP44

Fuse rating 125mAT 125mAT

XTRAFAST 96

XTRAFAST 120

Xtrafast 96 Xtrafast 120 Lift weight 51.2kg (112.9lb) **.*kg (**.**lb) Total weight (inclusive water) **.*kg (**.**lb) **.*kg (**.**lb)

The Seasonal Efficiency Domestic Boilers UK (SEDBUK) is **.*%.

The value is used in the UK Government's Standard Assesssment Procedure (SAP) for energy rating of dwellings. The test data from which it has been calculated have been certified by B.S.I.

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1 Technical Data

PUMP 96

Available pressure (kPa) between

heating supply and return lines

(10 kPa = 1 m WG)

Pom 010 a

120010008006004002000

Flow rate through heating system (I/h)

PUMP 120

70 60

40 30 20 10

Available pressure (kPa) between

heating supply and return lines

120010008006004002000

(10 kPa = 1 m WG)

Bypass fully shut Open 1/4 turn Open 1/2 turn Open 1 turn Open 2 turns

Flow rate through heating system (I/h)

3 4

Pom 058

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Diagram 4

The

XTRAFAST

packages:

- the boiler

- the fixing jig

- the flue system

Lifting Weight: 51,2 kg

2 Dimensions

is delivered in three separate

234

890

7422

X = 470 (96) 552 (120)

3 Heating System Design

• The

XTRAFAST

• Heating surfaces may consist of radiators, convectors or fan assisted convectors.

• The

XTRAFAST

heating system without the need for a mixing bottle. The maximum central heating flow temperature can be set to 53°C.on the boiler printed circuit board during commissioning.

• Pipe sectional areas shall be determined in accordance with normal practices, using the output/pressure curve (diagram

4). The distribution system shall be calculated in accordance with the output requirements of the actual system, not the maximum output of the boiler. However, provision shall be made to ensure sufficient flow so that the temperature difference between the flow and return pipes be less than or equal to 20°C. The minimum flow is 400 l/h.

• The piping system shall be routed so as to avoid any air pockets and facilitate permanent venting of the installation. Bleed fittings must be provided at every high point of the system and on all radiators.

is compatible with any type of installation.

can be piped directly to an underfloor

380

Diagram 5

• The total volume of water permitted for the heating system depends, amongst other things, on the static head in the cold condition. The expansion vessel on the boiler is pressurised at 0,5 bar (corresponding to a static head of 5 m w.g.) and allows a maximum system volume of 160 litres for an average temperature of 75°C and a maximum service pressure of 3 bar. This pressure setting can be modified at commissioning stage if the static head differs. An additional expansion vessel can be fitted to the system if required, see diagram 8.2.

• Provision shall be made for a drain valve at the lowest point of the system.

• Where thermostatic radiator valves are fitted, not all radiators must be fitted with this type of valve, and in particular, where the room thermostat is installed.

• In the case of an existing installation, it is ESSENTIAL that the system is thoroughly flushed prior to installing the new boiler.

Filling the system

A filling device must be provided to fill the system, see diagram

8.2.

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4 Domestic Hot Water System Design

• Copper tubing or plastic hep2o may be used for the domestic hot water system. Unnecessary pressure losses should be avoided.

• A flow restrictor limiting the flow through the boiler to a maximum of 12 l/min is fitted to the boiler.

• The boiler will operate with a minimum supply pressure of 0,7

5 Boiler Schematic

1 - Domestic thermistor 2 - Three way valve 3 - Gas valve 4 - Ignition module 5 - Heating element 6 - Micro accumulation vessel 7 - Burner 8 - Ignition electrode 9 - Combustion chamber 10 - Micro accumulation vessel thermistor 11 - Main heat exchanger 12 - Air pressure switch 13 - Heating safety valve (3 bar) 14 - Electronic control (PCB) 15 - Domestic water flow sensor 16 - Bypass 17 - Domestic heat exchanger 18 - Pump 19 - Expansion vessel 20 - Heating thermistor 21 - Overheat safety thermostat 22 - Flame sense electrode 23 - Fan 24 - Domestic safety valve (10 bar) 25 - Loss of water sensor A - Heating return B - Cold water inlet C - Heating flow D - Domestic hot water outlet E - Gas

bar, but under reduced flow rate. Best operating comfort will be obtained from a supply pressure of 1 bar.

'Hard Water Areas' In areas where the water is 'hard', more than 200mg/litre, it is

recommended that a proprietary scale reducer is fitted in the cold water supply to the boiler.

10026

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Diagram 5.1

6 Boiler Location, Flue and Ventilation

If the appliance has to be stored for any length of time before installation it should be kept in a safe place where it will not be a hazard to persons or obstruct any access. Care should be taken when handling or moving the appliance taking note of the trucking points on the sides of the carton.

6.1 Clearances

The position of the boiler must be such that there is adequate space for servicing.

The recommended clearances are: 20 mm either side of the boiler. 600 mm at the front of the boiler. 300 mm below the boiler. 25 mm above the flue elbow. Note: The boiler must be mounted on a flat wall which is

sufficiently robust to take its weight when full, that is, ** kg. If in doubt, expert advice should be obtained. In the event of the wall being found not suitable.

Note: It is permissible to install the boiler with smaller clearances than those quoted above PROVIDING that adequate consideration is given for Servicing/Repairs at a later date. If any doubt exists, contact the Glow-worm Technical Helpline

01773 828100.

The minimum acceptable spacings from the terminal to obstructions and ventilation openings are shown in diagram

6.1.

The boiler must be installed so that the terminal is exposed to the external air.

Should any doubt exist as to the permissible position of the terminal, contact the Glow-worm Technical Helpline 01773

828100.

6.2 Terminal guard

A terminal guard is required if persons could come into contact with the terminal or the terminal could be sublject to damage.

If a terminal guard is required, it must be positioned to provide a minimum of 50mm clearance from any part of the terminal and to be central over the terminal.

Teminal guard type K3 supplied by:

Tower flue components Ltd. Morley road Tonbridge Kent TN9 1RA

6.3 Flue options

There are various flue systems to choose from as follows: Standard horizontal flue pack. Standard horizontal extended flue pack. Vertical flue pack. Twin flue pack. Extentions, 90° and 45° bends. Flue options and accessories. For detailed information refer to flue guide Part No. 223278.

6.4 Cupboard or compartment ventilation

The boiler can be fitted in a cupboard or compartment without the need for permanent ventilation.

MINIMUM SITING DIMENSIONS FOR THE POSITIONING OF FLUE TERMINALS MM

A DIRECTLY BELOW, ABOVE OR HORIZONTALLY TO AN OPENING, AIR BRICK, OPENING WINDOWS, AIR VENT, OR ANY OTHER VENTILATION OPENING 300 B BELOW GUTTER, DRAIN/SOIL PIPE 75 C BELOW EAVES 200 D BELOW A BALCONY OR CAR PORT 300 E FROM VERTICAL DRAIN PIPES AND

SOIL PIPES 300

F FROM INTERNAL CORNERS AND

EXTERNAL CORNERS 300

G ABOVE ADJACENT GROUND OR

BALCONY LEVEL 300

H FROM SURFACE FACING THE

TERMINAL 600 I FACING TERMINALS 1200 J FROM OPENING (DOOR/WINDOW)

IN CAR PORT INTO DWELLING 1200 K VERTICAL FROM A TERMINAL 1500 L HORIZONTALLY FROM A TERMINAL 600

UNDER CAR PORT etc.

2816

B,C

H,I

B,C

Diagram 6.1

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7 Fixing Jig Pack

The fixing jig is made up, from left to right, as follows: A - Heating return fitting with isolating valve(v) and drain knob (u). B - Cold water inlet fitting with isolating valve (m)and

factory fitted flow regulator and filter (not shown). C - Heating flow fitting with isolating valve (q), drain knob (r) and safety valve (s1). D - Domestic hot water outlet fitting with safety valve (s2). E - Gas fitting.

SCREW (4 OFF)

ISOLATING VALVE PLATE

Other components within the fixing jig pack.

F - Hanging bracket G - wall template H - copper connections J - sealing washers K - sealant (putty)

9959

9880

COPPER

LEFT HAND SUPPORT BRACKET

THE FIXING JIG SHOWN ASSEMBLED

CONNECTIONS AND WASHERS (7 OFF)

8 Piping System Installation

8.1 Fixing jig

• Remove the contents of the fixing jig pack.

• Secure the left and right hand support brackets to the isolating valve plate with the securing screws (4 OFF) supplied, see

diagram 7.1.

• Connect the six copper connections and sealing washers to the isolating valves, see diagram 7.1.

• Heating system connections - Pipe diam. 22mm

• Hot water system connections - Pipe diam. 15mm

• Gas connection - Pipe diam. 22mm

• Domestic safety valve connection - Pipe diam.15mm

• Heating safety valve connection - Pipe diam. 15mm

8.2 Wall template

• Remove the wall template, follow the instructions given on the wall template.

• Note: It is important the hanging bracket and service cock

RIGHT HAND SUPPORT BRACKET

Diagram 7.1

bracket are fitted to a flat and true wall area for correct alignment with the boiler. If this is cannot be achieved it is acceptable to pack out the service cock bracket to obtain the correct alignment.

• Position the wall template, see diagram 8.1.

• Mark the position of the holes for the hanging bracket and jig.

• Drill, plug and fix the hanging bracket to the wall using suitable screws.

• Check that the hanging bracket is level.

• Drill plug and fix the fixing jig to the wall.

• For horizontal flue system, mark the position for the flue hole as follows:

8.3 Flue to rear of boiler

• Mark correct position of hole from template.

8.4 Flue to side of boiler

• Mark the horizontal centre line for the hole on the rear wall. Extend the horizontal centre line to the side wall and mark the vertical centre line of flue hole as shown in diagram 8.1.

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