Maxol SUPACOMBI HE28 Versionshinweis

SUPACOMBI HE28

G.C. Appliance No. 47-260-12

0086

Pin 87/BR/93

INSTALLATION & SERVICING INSTRUCTIONS

TO BE GIVEN TO THE USER

SECTION DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . PAGE NO

1INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0

1.1 Important Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.2 General Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

2TECHNICAL SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . 2

2.1 Gas Categories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

2.2 Performance Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

2.3 General Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2.4 Overall Dimensions & Minimum Clearances . . . . . . . . . . . . . . . . . 4

2.5 Concentric Air / Flue Duct Specifications . . . . . . . . . . . . . . . . . . . 4

2.5.3 Additional Concentric Flue Kits Plume Diverter Kit . . . . . . . . . . . . . 5

2.5.4 Plume Diverter Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.6 Appliance Hydraulic Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3INSTALLATION REQUIREMENTS . . . . . . . . . . . . . . . . . . . . 8

3.1 Statutory Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

3.2 Appliance Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

3.3 Flue Terminal Position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

3.4 Ventilation Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

3.5 Condensate Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

3.6 Gas Supply. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

3.7 Central Heating systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

3.8 Domestic Hot Water System . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

3.9 Electricity Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

3.10 External Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

4APPLIANCE INSTALLATION . . . . . . . . . . . . . . . . . . . . . . 12

4.1 Unpacking The Appliance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

4.2 Preparing The Wall . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

4.3 Mounting The Appliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

4.4 Central Heating and Domestic Hot Water Service Connections . . . 13

4.5 Gas Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

4.6 Condensate Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

4.7 Pressure Relief Valve Connection . . . . . . . . . . . . . . . . . . . . . . . . 14

4.8 Air/Flue Duct Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

4.9 Electrical Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

5COMMISSIONING AND TESTING. . . . . . . . . . . . . . . . . . 16

5.1 Filling the Water System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

5.2 Commissioning the Appliance . . . . . . . . . . . . . . . . . . . . . . . . . . 17

5.3 DHW Flow Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

5.4 Final Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

5.5 Lockout / Reset Indication. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

5.6 Frost Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

5.7 Overheat Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

5.8 Other Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

5.9 Users Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

5.10 Appliance Log Book. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

6ROUTINE SERVICING . . . . . . . . . . . . . . . . . . . . . . . . . . 20

6.1 Combustion Check. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

6.2 Removal of Casing Panels. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

6.3 Burner Removal and Cleaning. . . . . . . . . . . . . . . . . . . . . . . . . . 21

6.4 Gas Rate Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

6.5 Cleaning the Primary Heat Exchanger . . . . . . . . . . . . . . . . . . . . 22

6.6 Condensate Drain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

6.7 Re-assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

7INTERNAL WIRING DIAGRAM. . . . . . . . . . . . . . . . . . . . 24

7.1 Functional Flow Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . 24

8FAULT FINDING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

8.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

8.2 Diagnostic Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

8.3 Fault Finding Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

8.4 DHW Fault Finding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

8.5 Central Heating Fault Finding . . . . . . . . . . . . . . . . . . . . . . . . . . 25

9REPLACEMENT OF PARTS . . . . . . . . . . . . . . . . . . . . . . . 28

9.1 Primary Heat Exchanger. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

9.2 Combustion Chamber Insulation . . . . . . . . . . . . . . . . . . . . . . . . 28

9.3 Condensing Heat Exhanger . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

9.4 Fan and Air Pressure Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

9.5 Burner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

9.6 Ignition and Detection Electrodes. . . . . . . . . . . . . . . . . . . . . . . . 29

9.7 Gas Valve. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

9.8 Diverter Valve Actuator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

9.9 Draining the Boiler. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

9.10 CH Flow Switch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

9.11 DHW Flow Sensor (Hall Effect) . . . . . . . . . . . . . . . . . . . . . . . . . 30

9.12 DHW Flow Regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

9.13 DHW Plate Heat Exchanger . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

9.14 CH/DHW Thermistors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

9.15 Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

9.16 Auto Air Vent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

9.17 Pressure Relief Valve. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

9.18 Pressure Gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

9.19 Condensate Trap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

9.20 Control PCB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

9.21 Timeclock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

10 SHORT PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

The Maxol Supacombi HE 28 is a high efficiency

condensing, fully automatic, wall mounted, fan-assisted, balanced

flue gas combination appliance suitable for room sealed

applications, for use with natural gas (G20) only. This

combination appliance provides the user with both central heating

(CH) and domestic hot water (DHW) on demand.

The appliance features an attractive white stove enamelled

casing, with an inset control panel. The flue systems are in white

enamel to give a clean attractive appearance to the installation.

A telescopic horizontal concentric air/flue duct terminal is

available, (maximum duct length of 650 mm (251⁄2in)), suitable

for room sealed applications. The duct assembly is connected to

the appliance via a turret, which can be orientated to provide

different horizontal duct directions. Extension ducts may be fitted

in accordance with and up to the maximum dimensions stated in

these instructions.

A vertical concentric outlet kit is also available for installations

where an outside wall is not accessible or where it is desired to fit

the duct ‘through the roof’. Installation using the horizontal duct is

described in the main text of these instructions and additional

information is provided in the vertical outlet kit for the vertical

installation option. (Note: If the vertical outlet kit is to be used,

access to the roof is necessary).

Extension ducts are available, contact Technical Help Line:

01926 834834, for further details.

ONLY APPROVED FLUE KITS OR EXTENSIONS MAY BE

USED WITH THIS APPLIANCE.

CONTENTS INTRODUCTION

IT IS A STATUTORY REQUIREMENT THAT ALL GAS

APPLIANCES ARE INSTALLED BY COMPETENT PERSONS,

(i.e. CORGI REGISTERED INSTALLERS) IN ACCORDANCE

WITH THE GAS SAFETY (INSTALLATION AND USE)

REGULATIONS (CURRENT EDITION).

FAILURE TO COMPLY WITH THESE REGULATIONS MAY

LEAD TO PROSECUTION.

These appliances have been tested and certified in order to

satisfy the necessary European Directives and comply with the

latest Building Regulations, including the efficiency requirements

of the SEDBUK scheme.

Gas Appliance Directive 90/396/EEC

Efficiency of Hot Water Boilers Directive 92/42/EEC

Low Voltage Directive 93/68/EEC

Electromagnetic Compatibility Directive 92/31/EEC

No modifications to these appliances should be made unless they

are fully approved by the manufacturer.

Appliance installation must be carried out by a competent person

and must be in accordance with the current legislation in force at

the time of installation, in the country of destination.

The manufacturer's instructions must not be taken as overriding

any statutory requirements.

Control of Substances Hazardous to Health

Under Section 6 of the Health and Safety at Work Act 1974, it is

a requirement to provide information on substances hazardous to

health.

Maxol products are manufactured in accordance with ISO 9000

and do not, and will not, contain any hazardous materials or

substances such as asbestos, mercury or C.F.C.s.

The adhesives and sealants used in this appliance are cured and

give no known hazard in this state.

The appliance packaging does not contain any substances which

may be considered a hazard to health.

Combustion chamber panels

Material: mineral fibres

Known hazards – 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. Some people can suffer reddening and itching

of the skin. Fibre entry in to the eye will cause foreign body

irritation, which can cause severe irritation to people wearing

contact lenses. Irritation to respiratory tract.

Precautions – Dust goggles will protect eyes. People with a history

of skin complaints may be particularly susceptible to irritation.

High dust levels are only likely to arise following harsh abrasion.

In general, normal handling and use will not present high risk,

follow good hygiene practices, wash hands before touching eyes,

eating, drinking or using the toilet.

First aid – If you do suffer irritation to the eyes or severe irritation

to the skin seek medical attention.

GAS LEAKS. DO NOT OPERATE ANY

ELECTRICAL SWITCHES, OR USE A NAKED

FLAME. TURN OFF THE GAS SUPPLY.

VENTILATE THE AREA BY OPENING DOORS AND

WINDOWS. CALL OUT YOUR LOCAL GAS SUPPLIER

TEL: 0800 111 999.

Gas and Electricity Consumer Council (Energywatch)

Energywatch is an independent organisation, which protects the

interests of gas users. If you need advice concerning energy

issues, they may be contacted on their consumer help line

number: 08459 060708, or via their web site;

http://www.energywatch.org.uk.

The appliance incorporates a microprocessor based safety

system, called DICOM (Digital Combustion) that consists of the

boilers main PCB, the gas control valve (CES) and the air

pressure switch for controlling and regulation of the modulating

atmospheric gas burner with fan. It has direct burner ignition,

which provides a modulated heat output to either central heating

(CH) or domestic hot water (DHW) demands, and with internal

frost protection provided as standard. The appliance incorporates

a domestic hot water (DHW) pre-heat feature which can

automatically adjust to the user’s habitual requirements. Thus

during long stand still periods, e.g. overnight, no pre-heat is

provided.

The appliance is designed for use with sealed primary water

systems and incorporates a circulating pump, diverter valve

assembly, pressure gauge, flow switch, safety valve and system

expansion vessel. A separate DHW expansion vessel is not

required. Isolation valves are fitted to the service connections and

an automatic heating by-pass is fitted to maintain an adequate

flow rate through the boiler.

The appliance has a DHW flow detection device, which gives

priority to DHW demand and proportions the required heating

load to the DHW flow rate, an electro-mechanical 24 hour time

clock is also fitted as standard.

The appliances may be used with any certified mains voltage

room thermostat, and can operate without the need for an

automatic bypass valve in the CH circuit. However, it is

recommended that one radiator in the room where the room

thermostat is fitted, is installed without thermostatic radiator valves

to allow the pump overrun facility to operate correctly. A separate

CH expansion vessel is not required if the total CH system content

is less than 84 litres, but one is required for systems with volumes

greater than 84 litres; refer to section 3.7. A separate DHW

expansion vessel is not required.

It is recommended that a drain cock is fitted at the lowest point in

the system.

1.1 IMPORTANT INFORMATION

1.2 GENERAL DESCRIPTION

Appliance Maxol

Supacombi HE 28

Mode Rate

Central Heating Output Max kW 28.3

(non-condensing) (Btu/h) (96600)

(80 - 60 °C) Min kW 12.1

(Btu/h) (41300)

Central Heating Output (condensing) Max kW 30.7

(50 - 30 °C) (Btu/h) (104800)

Net kW 29.0

Central Heating Input (Btu/h) (99000)

Max Rate Gross kW 32.2

(Btu/h) (110000)

Net kW 13.0

Central Heating Input (Btu/h) (44400)

Min Rate Gross kW 14.4

(Btu/h) (49200)

Max kW 28.3

Domestic Hot Water Output (Btu/h) (96600)

Min kW 12.1

(Btu/h) (41300)

Net kW 29.0

Domestic Hot Water Input (Btu/h) (99000)

Max Rate Gross kW 32.2

(Btu/h) (110000)

Net kW 13.0

Domestic Hot Water Input (Btu/h) (44400)

Min Rate Gross kW 14.4

(Btu/h) (49200)

Central Heating Gas Rate (after 10 min operation - hot)

m3/h 3.07

Max ft3/h (108.4)

Domestic Hot Water Gas Rate (after 10 min operation - hot)

m3/h 3.07

Max ft3/h (108.4)

Burner Pressure (at 20mbar inlet pressure)

Max 10.0

Min mbar 1.6

Ignition 6.0

Injectors 130

Seasonal Efficiency %87.5

The appliance classification (as defined in EN 483) will be one of

the following depending on the chosen flue option: C12, C32.

This appliance is certified to comply with the requirements of EN

483, EN 677, and EN 625 for use in GB and IE (Great Britain

and Ireland) using gas category 2H (G20 with a governed gas

supply at 20 mbar (8 in.wg) inlet pressure).

TECHNICAL SPECIFICATIONS

2.1 GAS CATEGORIES

2.2 PERFORMANCE DATA

Appliance Maxol

Supacombi HE 28

Seasonal Efficiency (SEDBUK) Band “B”

NOx Classification Class “2”

Design Domestic Hot Water Performance raised 35ºC

l/min 11.5

(gpm) (0.5)

DHW Specific Rate (D) EN625 l/min 13.5

Min Mains Water Inlet Pressure for Operation

Bar 0.3

(psi) (4.3)

Max Mains Water Inlet Pressure

Bar 10

(psi) (145)

Min Domestic Hot Water Flow Rate for Operation

l/min 2.5

(gpm) (0.5)

Min Central Heating System Pressure Bar 0.3

Max Central Heating System Pressure Bar 2.5

Max Domestic Hot Water Temperature °C60

Min Domestic Hot Water Temperature °C40

Max Central Heating Flow Temperature °C80

Min Central Heating Flow Temperature °C40

Appliance Maxol

Supacombi HE 28

Total weight (full) kg 54.0

Total weight (empty) kg 49.0

Max lift weight kg 43.0

Total water capacity Ltr 4.8

Integral expansion vessel capacity Ltr 8

Maximum heating system water content

using fitted expansion vessel, @ 0.75 bar Ltr 84

Electrical supply 230V~50Hz Fuse at 3A

Internal fuse None

Maximum power consumption W130

IP Rating IP20

CO2value max rate %6.8 ± 1

CO value max rate ppm 75

Flue products mass flow rate g/s 17.0

Flue gas temperature - max rate °C90

Connections

Gas 15 mm compression

CH flow 22 mm compression

CH return 22 mm compression

DHW inlet 15 mm compression

DHW outlet 15 mm Copper Tail

Pressure relief valve outlet 15 mm Copper Tail

Condensate Drain 19mm I/D Plastic overflow pipe

2.3 GENERAL SPECIFICATIONS

2.4 OVERALL DIMENSIONS AND MINIMUM CLEARANCES

The Maxol Supacombi HE 28 can be installed to a horizontal or

a vertical flue system. The different flue applications as shown in

Fig. 2a and Fig. 2b are available as a Horizontal Wall terminal

2.5 CONCENTRIC AIR / FLUE DUCT SPECIFICATIONS

2.5.1 UNIVERSAL TELESCOPIC WALL TERMINAL KIT (C12) - PART NO. 956120

kit or a Vertical Concentric flue terminal kit comprising the

connecting parts to the appliance and end terminal.

(C12) – PART NO. 956120

Traditional concentric flue system, Fig. 2a, with a maximum length

of 2700mm. The flanged flue elbow is designed with 2.5° slope

towards the appliance so that the condensate can easily drain off.

When installing, please note that for every metre horizontal flue

length the terminal exit centreline is approx. 45 mm higher than

the elbow’s centreline.

The standard terminal is telescopic and can be used between

450 to 635 mm (from the centre of flue outlet to the outside wall,

but can be cut to a minimum flue length of 250mm, which is

suitable for single, 100mm (4"), brick walls.

TERMINAL KIT (C32)

- PART NO. 956081

2.5.2 VERTICAL CONCENTRIC FLUE

Dimensions from vertical terminals to opening

windows should be in line with Fig. 4

The following additional concentric kits are available as optional

extras.

Flue Extension Ducts - 1000 mm and 500 mm long, (each

duct extends the flue length by up to 950 mm and 450 mm

respectively).

93°Extension Elbow - Allows an additional bend in the flue,

and has an 'equivalent length' of 1550 mm. This elbow is

mechanically different from the flanged elbow supplied as

standard with the kit, but has the same equivalent length.

45°Extension Elbow - Allows an additional bend in the flue

and has an 'equivalent length' of 775 mm.

The 'equivalent' flue length must not exceed the

maximum values stated.

These optional kits may be used with the standard flue kits to

produce an extended range of flue options, providing that the

following rules are strictly obeyed.

a) The maximum/minimum permissible length of the room sealed

flue system are:

2.5.3 ADDITIONAL CONCENTRIC FLUE KITS

b) The standard terminal must always be fitted horizontally;

horizontal ducts must have a continuous fall towards the

appliance of 2.5°. This ensures condensate runs back into the

appliance from the flue system. The vertical terminal must always

be used if a vertical outlet is required.

c) The concentric flue system must use either a flanged elbow or

a vertical flue turret socket at the entry/exit to the appliance.

d) All joints must be correctly made and secured in accordance

with the installation instructions. When cutting ducts, avoid swarf,

uneven and sharp edges to maintain duct integrity.

Standard concentric (ø100/60) vertical flue application with a

maximum length of 6400mm. The kit comprises of the roof

terminal, flashing kit, vertical adaptor with sampling point and

bracket.

The maximum length is measured from the top of the appliance

casing to the underside of the air cowl.

For installation details refer to the instructions

provided with the individual flue kits.

Horizontal flue terminal (all orientations) maximum 2700mm (106 in)

Horizontal flue terminal (rear exit) minimum 250 mm (10 in)

Vertical flue terminal maximum 6400 mm (252 in)

Vertical flue terminal minimum 600 mm (231/2in)

Under certain operating conditions condensing appliances have a

tendency to form a plume of water vapour at the terminal.

Therefore consideration should be given when fitting the Plume

Diverter in terms of plume dispersal onto adjacent surfaces and

neighbouring properties.

a) Refer to section 4.8 for instructions on fitting the flue system.

Also see Figure 4 for all other clearances.

INSTALLATION INSTRUCTIONS

The diverter allows the terminal clearance to be reduced as

follows (see diagram 2c):

Clearance H – From a surface facing the terminal - 600mm.

Clearance F – From internal or external clearances - 300mm.

b) Choose the direction required to deflect the flue products

(left or right only)

c) Push the diverter elbow onto the angled outlet of the flue

terminal in the desired rotational position and ensure the diverter

is pushed up to the shoulder to fully engage the rubber seal.

d) Fix the diverter to the flue terminal with the self drilling screw

provided. Do not use a power tool to fit screw.

Note.

The Plume Diverter terminal must not under

any circumstances deflect flue products

downwards.

The resistance of the plume diverter is equivalent to

1.2 Mtrs of flue length. Ensure this is taken into account

when calculating the maximum allowable remaining flue

length. (ie Max flue length = 2.7 Mtrs subtract plume

diverter @ 1.2 Mtrs = 1.5 Mtrs remaining length)

Plume Diverter Kit Part No: 956103

(For use with Telescopic horizontal flue kit - Part no 956120 - only)

This kit is provided to assist in fitting a condensing boiler with

reduced clearances when fitted in good practice according to the

Guide to Condensing Boiler Installation published by

DEFRA/HMSO.

This kit allows the boiler flue outlet to be directed to the left or to

the right only.

INSTALLATION

PLUME DIVERTER TERMINAL

2.5.4

2.6 APPLIANCE HYDRAULIC CIRCUITS

INSTALLATION REQUIREMENTS

3.1 STATUTORY REQUIREMENTS

GAS SAFETY (INSTALLATION AND USE) REGULATIONS

The appliance is suitable only for installation in GB and IE and

should be installed in accordance with the rules in force.

In GB, a CORGI Registered Installer must carry out the installation.

It must be carried out in accordance with the current relevant

requirements of the:

Gas Safety (Installation and Use) Regulations

The appropriate Building Regulations either The Building

Regulations, The Building Regulations (Scotland), Building

Regulations (Northern Ireland).

The Water Fitting Regulations or Water Byelaws in Scotland.

The Current I.E.E Wiring Regulations.

Where no specific instructions are given, reference should be

made to the relevant British Standard code of Practice.

In IE, the installation must be carried out by a Competent Person

and installed in accordance with the current edition of I.S.813

"Domestic Gas Installations", the current Building Regulations and

reference should be made to the current ETCI rules for electrical

installation.

It should also be in accordance with the relevant recommendations

in the current editions of the following British Standards and Codes

of Practice: BS 5449, BS 5546, BS 5440-1, BS 5440-2, BS

6798, BS 6891, Institute of Gas Engineer document IGE/UP-7, BS

7074 (expansion vessel) and I.S.813 for IE.

IMPORTANT NOTE: Manufacturer’s instruction must NOT be

taken in any way as overriding statutory obligations.

3.3 FLUE TERMINAL POSITION

Detailed recommendations for flue installation are given

in BS 5440-1. The following notes are for general

guidance.

a) The appliance MUST be installed so that the terminal is exposed

to the external air.

b) It is important that the position of the terminal allows free

passage of air across it at all times.

c) It is ESSENTIAL TO ENSURE that products of combustion

discharging from the terminal cannot re-enter the building or any

other adjacent building, through ventilators, windows, doors, other

sources of natural air infiltration, or forced ventilation / air

conditioning.

d) The minimum acceptable dimensions from the terminal to

obstructions and ventilation openings are specified in Figure 4.

e) If the terminal discharges into a pathway or passageway check

that combustion products will not cause nuisance and that the

terminal will not obstruct the passageway.

f) Where the lowest part of the terminal is fitted less than 2000 mm

(78 in) above the ground, above a balcony or above a flat roof to

which people have access, the terminal MUST be protected by a

purpose designed K6 terminal guard (optional extra: Part No. 951507).

g) The air inlet / flue outlet MUST NOT be closer than 25 mm (1 in)

to combustible material.

h) Condensing appliances have a tendency to form a plume of

water vapour at the terminal under certain operating conditions. This

is normal but positions where this would cause damage or a

nuisance should be avoided. Consideration should be given to the

dispersal of the plume in terms of adjacent surfaces and

neighbouring properties.

3.2 APPLIANCE LOCATION

The following limitations MUST be observed when

siting the appliance:

a) The appliance is not suitable for external installations. The

position selected for installation should be within the building,

unless otherwise protected by a suitable enclosure and MUST allow

adequate space for installation, servicing and operation of the

appliance and for air circulation around it (Section 2.4 and 3.4).

b) This position MUST allow for a suitable flue system and terminal

position. The appliance must be installed on a flat vertical wall,

which is capable of supporting the weight of the appliance and

any ancillary equipment.

c) If the appliance is to be fitted in a timber framed building it

should be fitted in accordance with the British Gas publication

‘Guide for Gas Installations In Timber Frame Housing’, Institute of

Gas Engineers document IGE/UP-7. If in doubt, advice must be

sought from the Local Gas Supplier.

d) The appliance is approved to a protection rating of IP20.

Therefore if the appliance is to be installed in a room containing a

bath or a shower, any electrical switch or control utilising mains

electricity must be so situated that it cannot be touched by a person

using the bath or shower. Attention is drawn to the requirements of

the current BS 7671 (I.E.E Wiring Regulations) and in Scotland the

electrical provisions of the Building Regulations applicable in

Scotland.

3.4 VENTILATION REQUIREMENTS

Detailed recommendations for air supply are given in BS 5440-2.

The following notes are for general guidance.

a) It is not necessary to have a purpose provided air vent in the

room or internal space in which a room-sealed appliance is

installed.

b) Cupboard or compartment ventilation is not necessary for a

room-sealed appliance providing that the minimum clearances are

maintained. Consideration must also be taken into account of the

clearance requirements for maintenance. On no account must

stored articles be allowed to come into contact with the boiler or

flue system.

c) If the appliance is installed in a room or internal space with

other opened flued appliance, then the size of the air vent

necessary should be calculated in accordance with BS 5440-2

Table 2.

Andere Handbücher für SUPACOMBI HE28

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