Euroheat Classic i Harmony 3 39666005 Installation And Servicing Instructions

Brand: Euroheat

Model: Classic i Harmony 3 39666005

Category: Stoves

Type: Installation And Servicing Instructions

This manual is also suitable for

PART NUMBER

SERIAL NUMBER

Installation and &

Servicing Instructions

Classic i Harmony 1

394.92B3 & 39662004

Classic i Harmony 3

394.96B7 & 39666005

Multifuel Boiler Stoves

IN1144 Edition A February 2011

This Manual Must Always be Available to the Stove Operator

This manual must be used in

conjunction with document

IN1173. The Wood and Mutlifuel

Chimney and Installation Guide.

E & OE Instructions Part number IN1144 Ed. A

IMPORTANT

Since April 2002 only Registered Competent Engineers may install solid fuel ﬁred appliances without

involving the Local Authority Building Control Department. For more details contact HETAS. Euroheat

would suggest only Registered Competent Engineers install Euroheat appliances. If the installer is not a

registered Competent Engineer we would advise that property owners insurance company is contacted to

conﬁrm their insurance is not affected.

 The installation of this appliance must comply with all local regulations, including those referring to National

and European Standards, before it can be operated. The stove is not suitable for a shared ﬂue. For England and

Wales only, the coming into force on 1st April 2002 of SI 2002 No 440 exempts the householder from this legal

requirement for the installation of solid fuel ﬁred appliance whose rated heat output is 50kW or less in a building

having no more than 3 storeys (excluding any basement) if a Competent Engineer is employed who is registered

under the Registration Scheme for Companies and Engineers involved in the Installation and Maintenance of

Domestic Solid Fuel Fired Equipment operated by HETAS Ltd. These registered Competent Engineers may also carry

out associated building work necessary to ensure that the installed appliance complies with Building Regulations

without involving the Local Authority Building Control Department.

 Improper adjustment, alteration, maintenance or the ﬁtting of replacement parts not recommended by

the manufacturer can cause injury or property damage. Do not operate the stove with faulty seals or damaged

glass.

 Due to the high operating temperatures of this appliance it should be located away from pedestrian trafﬁc

and away from furniture and draperies. Do not store paper or wood near the appliance. Any mats and rugs put

in front of the stove should be ﬁre proof and secured to prevent the possibility of tripping.

 Advise all persons as to the stove’s high surface temperatures. If it is possible for children or inﬁrm adults to

come into contact with the stove, ﬁt a suitable ﬁre guard.

 It is imperative that all air passageways into, out of, and within the appliance are kept clean. All permanent

ventilation into the room provided for the stove must remain clear and unobstructed at all times. Consideration must

be given to the need for extra ventilation if another heating source needing air is to be operated simultaneously.

If an extraction fan is proposed to be ﬁtted to a connecting area of the house, after the stove has been installed,

professional advice should be sought from a qualiﬁed engineer.

 The user should be advised that the appliance should be inspected and the boiler air ways cleaned regularly

and the chimney cleaned at least annually. More frequent cleaning may be required and the advice of a qualiﬁed

chimney sweep should be sought.

 Our range of stoves is capable of operating with outstanding efﬁciency if the ﬂue system is correct. Because

so little heat is wasted to the ﬂue it is possible that moisture within the products of combustion will condense if

the heat losses within the ﬂue way are too great and allow the ﬂue gasses to cool. For this reason we recommend

that the stove is ﬁtted with a suitable ﬂue liner, the same diameter as the ﬂue spigot, to prevent the possibility

of acidic damage to the fabric of the chimney and damage to the stove which will reduce the longevity of the

stove.

 When correctly installed, the stove is designed to produce heat, safely. It cannot do so if the installation is

less than absolutely stable, constructed of materials suitable for such an installation and consideration has not

been given to the possibility of people with less than ideal common sense operating it.

 Have the existing chimney swept by a chimney sweep, although you will be lining the chimney, any deposits

left in the chimney will cause problems and may become a ﬁre hazard.

 Your attention is drawn to the precautions and responsibilities under the Health and Safety at Work Acts, and

whatever new legislation being introduced during the life of this document.

E & OE Instructions Part number IN1144 Ed. A

The Model Range Explained

Nestor Martin and Euroheat insist on progressive development to produce products which are market leading.

Our aims are to produce stoves with the latest innovations, user friendly operation and highly efﬁcient for lower

cost operation.

This manual offers installation information for the range of Nestor Martin Harmony boiler stoves. In some cases

you ﬁnd references in this document to the model size rather than the models exterior design. Although the

exterior clothes change between model sizes the internal workings are the same.

Model Identiﬁcation

You will see on the front page of this document a label which conﬁrms which model you have. This label also

advises you of the stoves unique serial number. This information is also attached to your stove for reference.

Important

Please ensure the warranty registration form is completed if you are the installer and conﬁrm with the user that it

is their responsibility to return it to Euroheat. In this way the model and its history will be recorded for reference

in the future.

For the latest versions of manuals, technical information, accessories and spare parts visit the Euroheat web site.

Stoves supplied through Euroheat authorized retailers.

For England, Wales, Scotland and Northern Ireland

Euroheat Distributors (H.B.S). Ltd.

Unit 2, Court Farm Business Park,

Bishops Frome,

Worcestershire. WR6 5AY.

www.euroheat.co.uk

info@euroheat.co.uk

Whilst Euroheat are always happy to assist, please ensure you have read this manual and the chimney and

installation guide IN1173.

First contact your supplying retailer for assistance. If you ﬁnd this not successful contact the Euroheat Technical

support team. Technical support telephone Number 01885 491117. E-mail tech@euroheat.co.uk.

Before telephoning ensure you have the stoves serial number to hand and that you are a Registered Competent

Engineer. If you are not a registered engineer seek one for assistance. A list of engineers can be obtained from

HETAS.

Euroheat unfortunately are NOT able to offer support for appliances which were not supplied by Euroheat.

Stoves supplied through Eireheat authorized retailers.

For Eire

Sean Murphy Heating Ltd

Kinvara

Co Galway

Eire

www.eireheat.com

sales@eireheat.com

(091)637701 Fax: (091)637797

International +353 91637701

For support for appliances supplied through Eireheat in Ireland please contact using the

details listed above.

Thermic Distribution Europe Sa

11 Rue De Lion

B-5660

Frasnes Les Couvin, Belgium.

www.nestormartin.com

E & OE Instructions Part number IN1144 Ed. A

*Free Air Requirement

Air requirement equivalent area. Building regulations Document J, advises that an air supply, permanently open

vents, should be installed for appliances:

If design air permeability >5.0m³/(h.m²) then 550mm²/kW of appliance rated output above 5kW

If design air permeability <5.0m³/(h.m²) then 550mm²/kW of appliance rated output

Equivalent air is as measured according to the method in BS EN13141-1:2004

It is unlikely that a dwelling constructed prior to 2008 will have an air permeability of <5.0m³/(h.m²) at 50pa

unless extensive measures have been taken to improve air-tightness.

Technical Data

Model

Harmony 1 3kW

Boiler

Harmony 1 6kW

Boiler

Harmony 3

7.5kW Boiler

Harmony 3

11kW Boiler

Fuel Type

Wood &

Smokeless Coal

Wood &

Smokeless Coal

Wood &

Smokeless Coal

Wood &

Smokeless Coal

Maximum Heat

Output to Room

7kW** 4kW** 8.5kW** 6kW**

Maximum Heat

Output to Boiler

3kW 6kW 7.5kW 11kW

Maximum Log

Length

457mm / 18” 432mm / 17” 558mm / 22” 482mm / 19”

Flue Outlet Size

(internal ﬁtting)

125mm / 5” 125mm / 5” 153mm / 6” 153mm / 6”

*Free Air

Requirement

*2750mm² *2750mm² *6050mm² *6050mm²

Gross Efﬁciency 70% 70% 70% 70%

Water heating

capacity

Shipping Weight 162kg 180kg 206kg 220kg

E & OE Instructions Part number IN1144 Ed. A

Bends in ﬂue pipe

Top exit

A ﬂue pipe shall have no more than four bends, each providing a maximum change of direction of 45º, there

should be not more than two of these bends before an access point for sweeping and two between a sweeping

point and the ﬂue terminal.

On top exit stoves, ideally the ﬂue should rise vertically 1 meter before the ﬁrst bend. It is permissible to have a

bend no greater than 45° from the top ﬂue outlet, or off the top of a “T” piece, as long as it does not adversely

effect the ﬂue draught.

Back exit

For a back outlet application using a “T” piece, this should be treated as two 45º bends. If a “T” piece is to be

used, the horizontal ﬂue run from the back outlet of the stove shall only be used to connect the stove to a “T”

piece and shall not be more than 150mm in length.

Chimney and Flues

For information on ﬂues see the Technical Guide IN1173 supplied with the stove.

Adequate access for sweeping must be provided.

It is not possible to sweep a ﬂue through a Harmony multifuel boiler stove.

Carbon Monoxide Alarms

Where a new solid fuel stove is installed in a property a carbon monoxide alarm should be located in the same

room where the appliance is located:

a. on the ceiling at least 300mm from any wall or, if it is located on a wall, as high up as possible (above any

doors and windows) but not within 150mm of the ceiling; and

b. between 1m am 3m horizontally from the appliance.

Carbon monoxide alarms should comply with BS EN 50291:2001 and be powered by a battery designed to

operate for the working life of the alarm. The alarm should incorporate a warning device to alert users when the

working life of the alarm is due to end. Mains-powered BS EN 50291 Type A carbon monoxide alarms with ﬁxed

wiring (not plug in types) may be used as alternative applications provided they are ﬁtted with a sensor failure

warning device.

E & OE Instructions Part number IN1144 Ed. A

Position of Boiler Tappings

295

570

135

194

120

390

265

125

230

Harmony 1 with 3kW Boiler

Harmony 1 with 6kW Boiler

E & OE Instructions Part number IN1144 Ed. A

189

644

291

7.5kW

685

160

153

153 ID

275

7.5kW

300

410

570

BOILER

TAPPINGS

1” MALE

Harmony 3 with 11kW Boiler

Harmony 3 with 7.5kW Boiler

E & OE Instructions Part number IN1144 Ed. A

Minimum Installation Clearances

From Combustible Materials

In all installations surrounding ﬂammable materials must not exceed 65°C.

Stove

Opening of stove

firebox

Non-combustible fireplace recess

In a ﬁreplace recess

Free standing

From Non-combustible Materials.

Distance Required hearth surface

At least 300mm the edge of which should be clearly deﬁned

At least 150mm the edge of which should be clearly deﬁned

At least 150mm, if using side door 300mm

At least 50mm, however pipe work may require a greater distance

The clearances are given as guidance only and in all installations there should be enough space around the

stove for access for maintenance of the boiler and installation of the pipe work. The stove should be level on the

hearth

Stove

Opening of stove

firebox

B B

Minimum clearance

from ﬂammable materials

A 300mm At least

B 250mm At least

C 300mm At least

D 300mm At least

E 250mm At least

E & OE Instructions Part number IN1144 Ed. A

Walls adjacent to free standing hearths

Walls that are not part of a ﬁreplace recess or a prefabricated appliance chamber but are adjacent to hearths or

appliances also need to protect the building from catching ﬁre.

(Note 1)

at least

150mm

at least

150mm

Solid, non-combustible

material eg Masonary

or concrete

Location of hearth or appliance Solid, non-combustible material

Thickness (T) Height (H)

where the hearth abuts a wall and

the appliance is not more than

50mm from the wall

200mm

at least 300mm above the

appliance and 1.2m above the

hearth

where the hearth abuts a wall and

the appliance is more than 50mm

but not more than 300mm from the

wall

75mm

at least 300mm above the

appliance and 1.2m above the

hearth

where the hearth does not abut a

wall and is no more than 150mm

from the wall (see Note 1)

75mm

at least 1.2m above the

hearth

Note:1. There is no requirement for protection of the wall where X is more than 150mm

E & OE Instructions Part number IN1144 Ed. A

Hearths

The stove should stand wholly above a hearth constructed of suitably robust materials and should be able to

accommodate the weight of the appliance and its unsupported ﬂue components. The materials should conform

to local Building Regulations and British Standards.

If the stove is not to stand in an appliance recess a hearth made of non-combustible board/sheet material or

tiles of at least 12mm thick may be used as long as the ﬂoor can accomodate the weight of the appliance and its

unsupported ﬂue components.

The Harmony I and Harmony III multifuel stoves conform to standards DIN18891 and DIN 18891-A1 where the

hearth temperature does not exceed 100°C.

For further information on hearths visit our web site www.euroheat.co.uk

Changing Flue Outlet Harmony 1 with 3kW Boiler & Harmony 3 with

7.5kW Boiler

The Harmony 1 with 3kW boiler and Harmony 3 with 7.5kW boiler as supplied as the top ﬂue option however it

is a very simple procedure to change to the rear ﬂue outlet. Remove the top ﬂue collar from the top of the stove

and the rear blanking plate from the rear of the stove. The ﬂue collar can then be ﬁtted to the rear of the stove,

the stainless steel protection tube must not be ﬁtted when using the rear ﬂue option. The blanking plate can be

ﬁtted to the top of the stove ensuring that the stainless steel protection plate is ﬁtted below the blanking plate.

Harmony I, 125mm ID

When using rear ﬂue outlet ﬁt top ﬂue

protector plate before ﬁtting cover plate.

This protection plate prevents damage

to the ﬂue outlet blanking plate.

When using top ﬂue outlet ﬁt ﬂue

outlet protection tube.

This protection tube prevents

damage to the ﬂue outlet.

E & OE Instructions Part number IN1144 Ed. A

When using top ﬂue outlet ﬁt ﬂue

outlet protection tube.

This protection tube prevents

damage to the ﬂue outlet.

When using rear ﬂue outlet ﬁt top ﬂue

protector plate before ﬁtting cover plate.

This protection plate prevents damage

to the ﬂue outlet blanking plate.

Harmony 3, 153mm ID

Changing Flue Outlet Harmony 1 with 6kW Boiler

To change to a top ﬂue outlet an adapter is ﬁtted to the rear outlet

of the stove, part No: 61771.

Remove the ﬂue collar from the rear

of the stove and ﬁt the inner part of

the adapter to the rear of the stove

using a gasket to seal the joint.

The outer section is then ﬁtted to the

inner section with the four screws

supplied, again using the gasket

supplied to seal the joint.

The ﬂue collar can then be ﬁtted to

the top of the adapter.

E & OE Instructions Part number IN1144 Ed. A

Changing Flue Outlet Harmony 3 with 11kW Boiler

To change to a top ﬂue outlet an adapter is ﬁtted to the rear outlet of the stove, part No: 61772.

Remove the ﬂue collar from the rear of the stove and ﬁt the inner part of the adapter to the rear of the stove

using a gasket to seal the joint.

The outer section is then ﬁtted to the inner section with the four screws supplied, again using the gasket supplied

to seal the joint.

The ﬂue collar can then be ﬁtted to the top of the adapter

E & OE Instructions Part number IN1144 Ed. A

Water Heating

Installation requirements in brief.

The installation for the appliance must be in accordance with the relevant requirements of the current Building

Regulations, current I.E.E. Wiring Regulations and the bylaws for the Local Water Authority. It should be in

accordance also with any relevant requirements of the Local Authority and the relevant recommendations of the

following current British Codes of Practice, or superseded amendments.

Water Circulation System.

Detailed recommendations for the water circulation are given in British Standards (for smallbore and microbore

central heating systems) or regulations relevant to country of installation.

Dependant upon the stove this can be installed to gravity primary with pumped central heating, fully pumped

with gravity by-pass.

This manual can only give some basic information as it is understood that our stoves are installed by

qualiﬁed and experienced installers only.

General Notes.

1. Gravity installations must provide an incline of horizontal pipes of at least 5mm/1000mm

2. Horizontal gravity inclined ﬂow-pipes must be 1 inch (28mm). Reductions may be made in vertical pipes.

3. Radiators larger than 5ft are to be connected diagonally with respect to radiators and gravity systems i.e.

gravity heat leak radiators.

4. It is advisable to ﬁt an adjustable circulating pump of which the rate of ﬂow can be adapted to the actual

requirements. The pump can be ﬁtted to the return or ﬂow pipe depending on the system design. Fit an

isolation valve immediately before and after the pump so that it can be removed for repair purposes.

5. Cistern

A) overﬂow minimum 22mm.

B) system cold feed minimum 22mm copper and ensure it is the last connection on boiler common return.

C) minimum air gap 25mm overﬂow to end of vent.

D) minimum air gap 25mm overﬂow to water level (normal run).

6. Vent

A) minimum 22mm.

B) air separation devices should be ﬁtted.

7. Slumber circuit. (Heat leak)

A) must cater with the minimum heat output.

B) no hand operated or automatic closing valves to be used.

8. Pump static head

A minimum 1.5 metres. i.e. height between cistern (cold feed tank) fall level and centre line of pump

position. This prevents cavitation occurring within the pump.

Hot Water Storage Vessel.

It is recommended that an indirect 190 litre (40 gallon) or larger hot water storage cylinder of the double feed

type complying with British Standards: or regulations relevant to country of installation. It should be lagged

and ﬁxed vertically and as near as possible to the appliance, but with sufﬁcient height to allow gravity ﬂow. In

combined systems the water draw off pipes to the taps must be dead leg connection from the vent expansion

pipe.

E & OE Instructions Part number IN1144 Ed. A

Fitting of Electrical Controls.

Gravity system primary, pumped radiators.

A time clock control can be installed to activate the water circulating pump. This will also control the priority of

heat to either hot water or hot water and central heating.

A pipe thermostat should be ﬁtted to the return pipe between the stove and central heating return gravity junction.

This must be so installed so that the pump cannot operate until the thermostat reaches the set temperature.

The system should operate with an 80°C ﬂow 60°C return with average temperature of 70°C.

It is also recommended that a high limit pipe thermostat is ﬁtted to the primary ﬂow to override all other controls

to activate the circulating pump. We recommend that only ﬂuid ﬁlled thermostats are used not by-metal.

Thermostat pre-wired kits are available, for conﬁguration information ask your Euroheat

retailer for Euroheat instruction manual IN1027.

Basic Electrical Control Systems

Basic Electrical Control System (No time clock control)

With Room Thermostat

Electrical Supply.

All electrical wiring should be undertaken by a suitably qualiﬁed electrician. The method of connection to the

mains electricity supply should facilitate complete electrical isolation. Fused double-pole switch having a contact

separation of at least 3mm serving only the appliance may be used. The point of connection to the mains should

be readily accessible and adjacent to the appliance.

50°C

Low Limit

90°C

High Limit

230V

Pump

230V

Room

Thermostat

50°C

Low Limit

90°C

High Limit

E & OE Instructions Part number IN1144 Ed. A

90°C

50°C

Typical Installation Harmony 1 with 6kW Boiler, Harmony 3 with 7.5kW and 11kW Boiler

and heat leak radiator.

Suggested installation for stove heating domestic hot water

Heat leak Radiator

Header tank

Hot water cylinder

Cold water header tank

Pressure release valve

Typical Installation Harmony 1 with 3kW Boiler

E & OE Instructions Part number IN1144 Ed. A

Glossary of installation diagrams terms.

1. System Drain Points - The water circuit must have sufﬁcient drain points to remove all water when required.

2. Water Circulating Pump - The circulating pump should be placed on the ﬂow pipe from the appliance.

3. Heat Leak Radiator (slumber circuit) - All stoves which have water heating capability will produce heat to water

when running. This amount will vary depending on model and output setting. The heat leak should be sufﬁcient

in size to absorb the water heating output with the stove in slow operation for long periods. It must never be

ﬁtted with a thermostatic radiator valve.

4. Hot Water Cylinder - install a hot water cylinder which can supply the hot water demand of the property. It

is recommended that hot water cylinder capacity is at least 13 litres per kilowatt of water heating output. For

example 13 x 11 = 143 litres (37 gallons). However, if a heat leak is below the recommended output a traditional

cylinder with at least 40 gallons should be ﬁtted.

5. Low Temperature Return Thermostat (FOR PUMPED HEATING)- Unless alternative mechanical or electrical options

are planned to be installed a low temperature return pipe thermostat must be installed. This thermostat should

be ﬁtted on the last link to the stove between the joining of the hot water cylinder circuit and radiator return and

the stove return connection (as diagram). The pipe thermostat is to prevent large quantities of low temperature

water passing through the boiler for long periods. This can reduce ﬂue temperatures and cause condensation.

NOTE: It is a requirement of the stoves warranty that at least a low temperature thermostat is ﬁtted. Ideally a

HI-LO control should be ﬁtted.

With gravity hot water and pumped radiator systems the pipe thermostat must control the water circulating

pump.

Several pre-wired control kits are available from Euroheat. For conﬁguration information ask your Euroheat retailer

for Euroheat instruction manual IN1027.

6. High Temperature Pipe Thermostat - This thermostat is to prevent excess temperature in the water cylinder

circuit when the radiator circuit is not in operation. If excess temperature occurs, boiling of the primary circuit, this

thermostat should override all other controls and activate the circulation pump when required. This thermostat

should be adjusted between 85-88°C with installations of gravity hot water and pumped radiator circuits.

7. Radiator Circuit - this must be correctly matched to the heating output of the stove.

E & OE Instructions Part number IN1144 Ed. A

Removing Internal Bafﬂes Harmony 1 with 3kW Boiler

Removing Top Bafﬂes

Lift the right hand bafﬂe upwards, lifting the rear

more than the front. Move the bafﬂe towards the

stove back to allow the front edge to clear the

supporting ledge and pull forward. The left bafﬂe

removes similarly. To replace the bafﬂes reverse

the procedure, ensuring the front edges of the

bafﬂes are pulled to the front of the stove and the

bafﬂes are as close together as possible.

Removing Riddling Links

Remove or loosen rear heat shield

Remove screw “A”

Remove riddling link bar “B”

Remove Screws “C” and riddler guide seals.

Removing Grate

Lift Front of Grate remove through front door.

Removing Riddling Grate all Models

E & OE Instructions Part number IN1144 Ed. A

Access to the Boiler for Cleaning

Harmony 1 with 6kW Boiler & Harmony 3 with 11kW Boiler

For the stove to operate efﬁciently and safely the air ways

at the top and rear of the boiler need cleaning at regular

intervals, dependant upon the quality of the fuel being

burned.

We would recommend that after the ﬁrst weeks use the

cast iron top plate is removed and the accumulation of

soots is monitored, then after two weeks it is inspected

again. This will allow you to gauge the frequency that the

boiler will need to be cleaned.

Only clean the airways when the stove is cold as any hot

embers could damage the vacuum cleaner being used.

The cast iron insert plate on the top of the stove needs to

be lifted out of the top plate to gain access to the boiler.

Once removed any ash can be vacuumed away.

Access to the rear of the boiler can be gained by removing

the steel blanking plate on the top of the boiler (see picture

opposite).

Adjusting thermostat setting Harmony 1 with 3kW Boiler & Harmony 3 with 7.5kW

The cold setting of the thermostat must be checked before

the stove is operated for the ﬁrst time.

The thermostat can be adjusted in two places. (A) may be

bent for course adjustment and (B) for ﬁne adjustment.

With the stove cold the gap between the inside left of the thermostat disc and the

cast iron body of the stove should be 1-2 mm at normal room temperature.

Note: the thermostat disc is designed to close at an angle.

1-2mm

Lift up the steel plate from the top of the boiler to

access the rear of the boiler for cleaning

E & OE Instructions Part number IN1144 Ed. A

You will need to use the cleaning brush supplied with your stove in conjunction

with a vacuum cleaner, we recommend the either the Motorised Ash Vac: Part

AC013, or the Standard Ash Vac: Part AC008.

Both available through your Euroheat dealer or directly from our web site www.

euroheat.co.uk

Motorised Ash Vac

E & OE Instructions Part number IN1144 Ed. A

Flue draught measured

with the air wash vent

fully open and all other

air supplies to the ﬁre

closed.

Euroheat can supply

the ﬂue measurement

gauges order number

MS026.

Note this is not a water

gauge used to measure

gas pressure.

0.04

0.02

0.06

millimetres

inches

Maximum

firing rate

Minimum

firing rate

Draught requirements for multifuel stoves

Draught measured with the air wash vent fully open

and all other air supplies to the stove closed

.09

.08

.07

.06

.05

.04

.03

.02

.01

IN. OF WATER DRAFT OR PRESSURE - LOW RANGE

IN. OF WATER DRAFT OR PRESSURE - HIGH RANGE

.05

1.0

The negative pressure created within the combustion chamber of the stove must be measured using a test hole

drilled into the ﬂue, as close to the stove as possible and before any draught stabilizer that may be ﬁtted to the

ﬂue.

To ensure a constant air inlet size the readings should be taken with both the grate and the thermostatically

controlled air inlet to the stove shut, and the secondary air-wash inlet fully open.

A reading should be taken before the stove is lit to identify any possible problems which may be caused by air

being drawn down the ﬂue by other heating appliances ﬁtted with a ﬂue, extraction fans, etc.. These should be

dealt with before lighting the stove.

Once lit, the stove and ﬂue should be allowed to warm thoroughly before letting the ﬁre burn at a low setting.

While taking the ﬂue draught reading, all air entries to the combustion chamber of the stove should be closed

except the secondary air-wash shutter, which should be fully open. The draught measurement should read

approximately 0.5mm wg.

The stove should now be made to burn at its maximum output and another draught measurement taken, again

closing all air supplies to the stove other than the secondary air-wash shutter. The draught reading when the

burner is operating at its maximum setting should be approximately 1.5mm. wg.

A ﬂue draught which is too low will result in the stove being difﬁcult to light, responding only slowly to demands

for increased output and unable to reach its full heating output.

Flue draught which is too high will make control of the ﬁre difﬁcult, and makes it possible to over ﬁre the stove,

which can seriously damage it. In this instance a ﬂue draught stabaliser may need to be ﬁtted.

The installation manual should be consulted if the ﬂue draught pressure readings are incorrect.

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Euroheat Classic i Harmony 3 39666005 Installation And Servicing Instructions

Brand: Euroheat

Model: Classic i Harmony 3 39666005

Category: Stoves

Type: Installation And Servicing Instructions

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