View
6
Download
0
Category
Preview:
Citation preview
Page 2 of 33
Index
1. Flue Systems 1.1 1.2 1.3 1.4 1.5
Flue information and guidelines………….... Open flue system…………………….…….… Room sealed system…………….…………. Examples of flue gas systems……………... Available flue systems per boiler……….……
3 3 4 5 6
2. Design and sizing information 2.1
2.2 2.3 2.4 2.5
Boiler maximum flue lengths…….……..…...
Thision S Plus………………………...
Thision L Evo……………….…………
Thision L Eco……………….……….… Safe flue termination…………………………. IGEM-UP 10…………………………………... BS6644 – 70kW to 1.8MW………..………….. BS5440 – Up to 70kW………………..………
6 6 7 7
8
9 10
11
3. Flue components 3.1 3.2
3.3 3.4
3.5 3.6
Available flue components……………..…….. Thision S Plus flue components……..……….
Concentric flue……………..…..……..
Two pipe flue system……………..…… Thision L Evo flue components……….…..…
Concentric flue……….…………..……
Two pipe flue system……………….. Thision L Eco flue components………..……
Concentric flue………………..….…..
Two pipe flue system………..………. Flexible flue components…………..….……… Cascade flue components……..……………
13 14 14
14 15 15 15
16 16
16
17
18
4. Flue component dimensions
4.1 4.2 4.3 4.4 4.5
Concentric flue parts dimensions...………… PPs flue parts dimensions……………………. Cascade flue dimensions………..………….. Flexible flue dimensions…………..………… Cascade flue dimensions…………………….
20 23 24 25 27
Page 3 of 33
1. Flue Systems
1.1 Flue information and guidelines
Requirements and regulations
Regulations for the construction of flue gas systems are very different for each country. It should
be ensured that all national regulations with regards to flue gas systems are respected.
Pay attention to the following recommendations when dimensioning a flue gas system.
The flue gas system must be properly calculated to ensure safe operation of the system.
Flue gas system components should be removable for maintenance purposes.
Horizontal flue sections must have an incline of no less than 3° back towards the boiler.
Only materials which are heat resistant, resistant to flue gases and aggressive condensate
and also CE approved may be used.
It is the responsibility of the installer to ensure the integrity of the flue and/or chimney
system before commissioning the boiler.
Any terminal that is less than 2 metres above finished floor or ground level must be
guarded. This also applies when terminals are positioned above flat roofs and balconies to
where there is regular unimpeded access. Please see IGEM-UP10 section for more
information on termination.
Please contact Elco UK office for more information for configurations.
1.2 Open flue systems
Open flue systems can be designed where the combustion air supply
is taken from the room or from the surrounding area where the boiler
is installed.
The flue combustion gases are taken from the boiler and terminated
at a higher level to the air intake or a different termination location to
avoid contaminating the air supply with the flue gas. Elco recommend
that single wall plastic flue pipe (PPs) be used for open flue systems.
When designing a flue gas pipe, please ensure that the horizontal
lengths have a 3° fall towards the boiler to aid in any condensate
draining. It is not necessary to make a separate condensate drain in
the flue gas system as the condensate will be drained via the boiler
syphon.
In addition to this, we also recommend that flue brackets are used at 1 metre increments to support
the flue pipe installation. The flue pipe should also be designed to be as straight as possible to
utilise the maximum length of the flue that the boiler can run. If a bend is unavoidable, we advise
that 90° bends not be installed directly one after another.
Page 4 of 33
Open flue systems continued…
When using an open flue system, Elco recommends that
an air inlet cover or air filter must be fitted on the air inlet
connection on the boiler, to stop any debris entering the
air supply and causing issues with the boilers
combustion. The flue system must be fitted with flue
pipes that have seamless connections only to avoid
leaks.
The maximum temperature of the flue gas for the wall
hung boiler range that we supply is 77°C so no protective
measures or clearances towards combustible objects
needs to be taken.
1.3 Room sealed flue systems
Room sealed flue can be constructed with either concentric flue pipe
or single pipe plastic flue (PPs). These type of systems are defined
by taking the combustion air supply from outside the room the boiler
is located.
With concentric flue pipe the combustion air is supplied and the flue
gas extracted through one concentric coaxial pipe. The combustion
air is supplied through the gap between the external painted
aluminium air pipe and the internal plastic flue pipe. Flue gases are
extracted through the internal plastic pipe (PPs).
When designing a room sealed system please ensure that the
horizontal lengths must have a 3° fall towards the boiler to aid in any
condensate draining. It is not necessary to make a separate
condensate drain in the flue gas system as the condensate will be
drained via the boiler syphon.
In addition to this, we also recommend that flue brackets be used at 1
metre increments to support the flue pipe installation. The flue pipe
should also be designed to be as straight as possible to utilise the
maximum length of the flue that the boiler can run. If a bend is
unavoidable then they must not be installed directly one after another.
The maximum temperature of the flue gas for the wall hung boiler
range that we supply is 77°C so no protective measures or
clearances towards combustible objects needs to be taken.
Page 5 of 33
1.4 Examples of flue gas systems
Combustion air
drawn from the
room
B23 External flue gas exhaust. Air drawn from the room.
C13
Air/exhaust gas routing through outside wall in the same pressure range. Exhaust gas/fresh air supply system through outside wall. The Terminal outlets from separate combustion and air supply circuits shall fit inside a square of 50 cm for boilers with a heat input to 70 kW and 100 cm with a heat input from 70 up to 100 kW.
C33
Flue gas exhaust and air suction duct from outside with roof terminal in the same range of pressure. The Terminal outlets from separate combustion and air supply circuits shall fit inside a square of 50 cm and distance between the planes of the two orifices shall be less than 50cm for boilers with a heat input below 70 kW. A square of 100 cm and distance between the planes of the two orifices shall be less than 100 cm with a heat input above 70 kW.
C43 Individual or shared flue gas exhaust and air suction through flue ducting built into the building
C53 Flue gas exhaust leading outside and air suction duct through external wall not in the same range of pressure.
C63
Air and exhaust connection to separate tested and supplied air/exhaust pipes. Basement / floor installation. Air and exhaust venting via exterior wall. Exhaust venting through heat insulated exhaust pipe or moisture resistant pipe. Exhaust line (standing air layer) at exterior wall. The terminals for the supply of combustion air and for the evacuation of combustion products shall not be installed on opposite walls of the building.
C83 Flue gas exhaust through individual or shared flue ducting built into the building. Air suction through external wall.
Combustion air
drawn from
outside
Page 6 of 33
1.5 Available flue systems per boiler
Concentric Flue (mm) Plastic Single Pipe Flue (PPs) (mm) Thision S Plus 80/125 100/150 Thision S Plus 80 100 110 125 130
34 34 46 46 54 54
Thision L Evo 80/125 100/150 Thision L Evo 80 100 110 125 130
60 60 70 70 80 80
100 100 120 120
140 140
Thision L Eco 80/125 100/150 Thision L Eco 80 100 110 125 130
70 70 100 100 120 120
2. Design and sizing information
2.1 Boiler maximum flue lengths
Thision S Plus
Maximum length in metres for concentric room sealed installations 80/125 100/150
Changes of direction
0 2 3 4 0 2 3 4
34 25 13.6 7.9 2.2 40 34.2 31.3 28.4
46 12 30 19.4 14.1 8.8
54 11 30 15.4 8.1 0.8
Maximum length in metres for single pipe open or room sealed installations
80mm 100mm Changes of
direction 0 2 3 4 0 2 3 4
34 30 22 18 14 80 77.1 75.7 74.3
46 12 55 49.9 47.3 44.7
54 11 50 42.9 39.3 35.8
Page 7 of 33
2.1 Boiler maximum flue lengths continued…
Thision L Evo
Thision L Evo 80/125 100/150
(m) (m) 60 14 38 Equivalent length in m
70 12 33 Concentric flue Bend R = D Bend R = D
80 7 23 gas system 90°/87° 45°/43°
100 11 80/125 1.5 1
120 7 100/150 1.5 1
Thision L Evo 80 100 110 125 130
60 17 62 70 13 52 65 Twin pipe flue Equivalent length in m
80 7 36 47 gas system 80 100 110 125 130
100 13 23 56 88 Straight Pipe 1 1 1 1 1
120 8 13 43 65 90°/87° Bend 1.5 1.8 2 2.2 2.2
140 5 14 23 45°/43° Bend 0.8 0.9 1 1 1
*Please be advised that we do not offer concentric flue for the Thision L Evo 140 boiler.
**Please be advised that we do not supply 130mm PPs flue.
Thision L Eco
Maximum length in metres for concentric room sealed installations
100/150 Changes of direction 0 2 3 4
70 25 22 20 18
100 15 12 10 8
120 8 5 3 1
Maximum length in metres for single pipe open or room sealed installations
100mm Changes of direction 0 2 3 4
70 63 59 57 55
100 35 31 29 27
120 12 8 6 4
Page 8 of 33
2.2 Safe flue termination
In this section we aim to advise which laws and guidance are to be used in which situation. This
document will not cover every regulation but it will provide guidance as to which regulation
applies to certain situations.
The guide will look at the more common standards used to advise the requirements for flue and
ventilation installations and is not to be used as a standalone reference for regulations relating
to flue.
Please also refer to the installation and planning manuals for the specific boiler were there may
be specific information relating to flue installation standards.
When dealing with domestic installations that have a net input up to 70kW, these will be covered
by BS5440.
If the same appliance under the 70kW limit was to be installed in a commercial property then
this now needs to meet the requirements of IGE UP10 & BS6644.
However if a boiler is installed in a cascade arrangement and then exceeds the total input of
70kW then it falls under the commercial flue and ventilation requirements.
What is mandatory and what is just guidance?
British Standards (such as BS5440) are a mandatory requirement and have to be adhered
to. The approved documents offer guidance on how to comply and are only legally binding if
they are stipulated in the manufacturers installation manual. It is important to follow the
guidelines as they may be used in a court of law as the minimum expectation of a
competent person when installing a safe heating system.
The Clean Air Act is a mandatory requirement set out in Government legislation. It was
introduced in 1956 to reduce air pollution reacting to the Great Smog of London in 1952, in
that it helped the development of laws to help protect the environment.
This act targeted areas in major towns and cities, in these areas only fuels that produced
smokeless fuels could be used, also moving power stations away from main cities and
making it so that the height of certain chimneys being increased to avoid low level
contamination.
Nowadays smog is not as much of an issue as it was, but amendments of the Clean Air Act
have maintained control of emissions and the height of flue systems being more conscious
of pollution at lower levels.
Gas Safe (Gas Safety Installation and Use Regulations) is now mandatory and is there to
set out the requirements for safe installations and for working on gas installations.
IGE/IGEM is a guidance in a similar fashion to the British Standards but these are used by
industry experts as a current best practice and are in line with international and national
legislation and standards. The most relevant being IGEM UP 10 – Installation of flued gas
appliances in industrial and commercial premises.
On the following page is an extract from IGEM UP10 in relation to termination positions for
appliances over 70kW net input.
Page 9 of 33
2.3 IGEM-UP 10
Single pipe flue minimum height of termination above a roof relating to number 1
Boiler Model Thision L Eco Boilers Thision L Evo Boilers
L Eco 100 L Eco 120 L Evo 80 L Evo 100 L Evo 120 L Evo 140
Above Roof 475mm 605mm 335mm 420mm 505mm 590mm
For other appliances use the calculation: Distance = 4.5675 (net heat input) - 19.723 For all sloped roofs over a 20° pitch the terminal must be 1.5 metres away.
If the flue terminates within 2.5 metres of an adjacent structure, the heights will apply to above the adjacent structure. Elco concentric roof terminals terminates 700mm above roof level and therefore the above need not apply.
Minimum termination distances relating to numbers 2, 3 & 6
Boiler Model Thision L Eco Boilers Thision L Evo Boilers
L Eco 100 L Eco 120 L Evo 80 L Evo 100 L Evo 120 L Evo 140
Open Flue 1865mm 2135mm 1565mm 1740mm 1925mm 2105mm
For other open flue fan draught appliances use the calculation: Distance = 9.5156 x (net heat input) + 833.91
Room Sealed 875mm 1085mm 650mm 785mm 925mm 1060mm
For other room sealed fan draught appliances use the calculation: Distance = 7.232 x (net heat input) + 93.708
Minimum horizontal termination to opposing flat surfaces/terminals relating to number 10
Boiler Model Thision L Eco Boilers Thision L Evo Boilers
L Eco 100 L Eco 120 L Evo 80 L Evo 100 L Evo 120 L Evo 140
Flat Surfaces 3115mm 3775mm 2395mm 2825mm 3265mm 3705mm
For other appliances use the calculation: Distance = 23.126 x (net heat input) + 618.84
Terminals 2735mm 3285mm 2135mm 2490mm 2860mm 3225mm
For other appliances use the calculation: Distance = 19.32 x (net heat input) + 647.59
Termination positions for appliances over 70kW net input
Key to Diagram:
1 – Minimum termination height for ridged and flat roofs
2 – Minimum horizontal termination distance from openings e.g. doorways, windows, ventilation grilles, etc.
3 – Minimum horizontal termination distance from adjacent walls or obstructions
4 – Minimum distance to be 200mm for fan assisted appliances, 300mm for room sealed natural draught appliances. See BS5440.
5 – Minimum distance to be 150mm, see BS5440
6 – Minimum termination distance from openings e.g. doorways, windows, ventilation grilles, etc.
7 – Minimum distance between the flue terminals is to match the flue centres of our boilers when mounted on a cascade frame.
8 – Minimum distance below terminal or opening – 2.5 metres
9 – Minimum termination 2000mm above ground and a terminal guard must be fitted if less than 3000mmm.
10 – Opposing a terminal or flat surface.
Page 10 of 33
2.4 BS6644 – 70kW to 1.8MW
Open Flued Type B and Room sealed Type C Appliances Installed within an Enclosure (Natural ventilation requirements direct to Outside Air.)
Flue type Ventilation direct to outside air Ventilation to an internal space
Open flue Type B 5 cm² 10 cm² Not permitted Not permitted
Room sealed Type C 5 cm² 5 cm² 10 cm² 10 cm²
Open Flued Appliances Installed within a Boiler Room (Natural ventilation requirements direct to Outside Air.)
Open flue Type B Ventilation direct to outside air
Low Level (Free Area / kW) 4 cm²
High Level (Free Area / kW) 2 cm²
Balanced Flued Appliances Installed within a Boiler Room (Natural ventilation requirements direct to Outside Air.)
Room sealed Type C Ventilation direct to outside air
Low Level (Free Area / kW) 2 cm²
High Level (Free Area / kW) 2 cm²
Room sealed appliances with an Maximum Operating Pressure not exceeding 100 mbar in ventilated
occupied spaces with an air change rate exceeding 0.5 air changes per hour do not require additional
ventilation. If the air changes rate is below 0.5 per hour, 2 cm 2 kW -1 ventilation at high and at low level
shall be required.
Open Flued Appliances Installed with a Draught Diverter (Mechanical ventilation flow rate requirements direct to Outside Air.)
System Type & Operational Time Grille Location Ventilation direct to outside air
Low Level Inlet (m3/h / kW) 2.8
High Level Extract (m3/h / kW) (Difference Between Inlet and Extract Air)
2.07 +/- 0.18
Open Flued Appliances Installed without a Draught Diverter (With or without stabilizers) (Mechanical ventilation flow rate requirements direct to Outside Air.)
System Type & Operational Time Grille Location Ventilation direct to outside air
Low Level Inlet (m3/h / kW) 2.6
High Level Extract (m3/h / kW) (Difference Between Inlet and Extract Air)
1.35 +/- 0.18
Where high level discharge openings are not mechanically assisted, the free area must be calculated as detailed above. All air inlet and extract fans must be fitted with automatic controls (interlocks) causing safety shut-down or lockout of the installed gas burning appliances in the event of an inlet or extract air flow failure.
Page 11 of 33
2.5 BS5440 – Up to 70kW
Open Flued Appliances installed within a Room (Natural ventilation requirements direct to Outside Air.)
Total rated net input not in excess of (70 kW – 7 kW) x 5cm² = Ventilation opening free area Open Flued
Open Flued appliances Installed within a compartment (Natural ventilation requirements.)
Ventilation Route Grille Location
Ventilation to room or internal space. (The internal space ventilated into must be ventilated as detailed above to outside air.)
Ventilation direct to outside air
Low Level (Free Area/kW) 20 cm² 10 cm²
High Level (Free Area/kW)
10 cm² 5 cm²
Balanced Flued Appliances Installed within an Enclosure (Natural ventilation requirements)
Ventilation Route Grille Location
Ventilation to room or internal space. Ventilation direct to outside air
Low Level (Free Area/kW) 10 cm² 5 cm²
High Level (Free Area/kW)
10 cm² 5 cm²
Air Vent Position Appliance Input (kW)
Fanned Draught Distance (mm)
A Above a Terminal
0 to 7 300
>7 to 14 300
>14 to 32 300
>32 300
B Below a Terminal
0 to 7 300
>7 to 14 300
>14 to 32 300
>32 300
C Horizontally to a Terminal
0 to 7 300
>7 to 14 300
>14 to 32 300
>32 300
Page 12 of 33
2.5 BS5440 – Up to 70kW continued…
No part of the chimney outlet shall be less
than 1500mm measured horizontally to the
roof surface or 600mm above the ridge.
If the chimney penetrates the dotted area,
and distance A is less than 1500mm, then
distance B shall not be less than 600mm.
Examples of the structure referred to above
include a parapet, dormer window or
chimney stack.
Page 13 of 33
3. Flue Components
3.1 Available Flue Components
21
9
Available Flue Parts:
1. Wall Terminal
2. 2000mm Concentric Pipe
3. 500/1000mm Concentric Pipe
4. 90° Concentric Bend
5. 45° Concentric Bend
6. Vertical Adaptor
7. Roof Terminal
8. Flat Roof Flashing
9. Pitched Roof Flashing
10. Wall Bracket
11. Concentric Increaser
12. 2000/1000/500mm PPs Pipe
13. 90° PPs Bend
14. 45° PPs Bend
15. Plume Kit
16. PPs Increaser
17. Bird Mesh Stainless Steel Guard
18. Air Filter
19. Concentric to Parallel Adaptor
20. Air Inlet Cover
21. Parallel to Concentric Adaptor
22. PPs Reducer
*Products supplied may differ from image
1
3
2
13
12
14 15
8
16
17
18
7
11
10
6
5
4
19
20 22
Page 14 of 33
3.2 Thision S Plus Flue Components
Concentric Flue Systems
Item Flue Component 80/125 100/150
2 1950mm Length 3791646 3791303
3 1000mm Length 3791641 3791304
3 500mm Length 3791642 3791305
4 87°/93° Bend 3791643 3791306
5 45° Bend 3791644 3791307
1 Wall Terminal 3791645 3791308
1 + 4 Wall Terminal Kit * FLUE-B-WALL FLUE-B-EVOWALL
7 Roof Terminal 3791640 3791309
8 Flat Roof Slate 3791613 3791617
9 Pitched Roof Slate 3791614 3791618
10 Flue Bracket 3791612 3791616
15 Plume Kit 3791639 3791480
*Wall terminal kit includes wall terminal and 87°/93° bend
Single/Two Pipe Flue Systems
Item Flue Component 80mm 100mm UV Resistant 80mm
12 1950mm Length 3791584 3791297
12 1000mm Length 3791573 3791299 3791577
12 500mm Length 3791585 3791594 3791578
13 87°/93° Bend 3791574 3791300 3791579
14 45° Bend 3791575 3791301 3791580
17 Mesh Terminal 3791582 3791607 3791582
10 Flue Bracket 3791576 3791302 3791581
15 Plume Kit 3791639 3791480 3791639
Accessories
Item Flue Component Part Code
11 80/125 to 100/150 Concentric Increaser 3791570
16 80mm to 100mm Single Pipe Increaser 3791662
19 80/125 Concentric to Parallel Adapter 3791658
Page 15 of 33
Elco do not supply 130mm PPs flue, if this is required then please contact a specialist flue supplier.
3.3 Thision L Evo Flue Components
Concentric Flue Systems
Item Flue Component 80/125 100/150 110/150
2 1950mm Length 3791646 3791303
3 1000mm Length 3791641 3791304 3791621
3 500mm Length 3791642 3791305 3791622
4 87°/93° Bend 3791643 3791306 3791623
5 45° Bend 3791644 3791307 3791624
1 Wall Terminal 3791645 3791308 3791768
1 + 4 Wall Terminal Kit * FLUE-B-WALL FLUE-B-EVOWALL FLU-110/150-WALL
7 Roof Terminal 3791640 3791309 3791625
8 Flat Roof Slate 3791613 3791617 3791617
9 Pitched Roof Slate 3791614 3791618 3791618
10 Flue Bracket 3791612 3791616 3791616
15 Plume Kit 3791639 3791480
*Wall terminal kit includes wall terminal and 87°/93° bend
Single/Two Pipe Flue Systems
Item Flue Component 80mm 100mm 110mm 125mm UV Resistant
80mm
12 1950mm Length 3791584 3791297 3791345 3791609
12 1000mm Length 3791573 3791299 3791595 3791608 3791577
12 500mm Length 3791585 3791594 3791578
13 87°/93° Bend 3791574 3791300 3791596 3791610 3791579
14 45° Bend 3791575 3791301 3791597 3791611 3791580
17 Mesh Terminal 3791582 3791607 3791607 3791619 3791582
10 Flue Bracket 3791576 3791302 3791626 3791612 3791581
15 Plume Kit 3791639 3791480 3791639
8 Flat Roof Slate 3791613
9 Pitched Roof Slate 3791614
20 Air Inlet Cover 452002280
Accessories
Item Flue Component Part Code
21 100/100 to 80/125 Concentric Adaptor 3791648
21 100/100 to 100/150 Concentric Adaptor 3590656
21 100/100 to 110/150 Concentric Adaptor 3791653
21 130/130 to 110/150 Concentric Adaptor 3791647
22 100mm to 80mm Reducer 3791650
16 100mm to 110mm Increaser 3590307
16 100mm to 125mm Increaser FLUE0039AA000
22 130mm to 125mm Reducer 3590308
20 130mm Air Inlet Cover 452002300
Page 16 of 33
3.4 Thision L Eco Flue Components
Concentric Flue System
Item Flue Component 100/150
2 1950mm Length 3791303
3 1000mm Length 3791304
3 500mm Length 3791305
4 87°/93° Bend 3791306
5 45° Bend 3791307
1 Wall Terminal 3791308
1 + 4 *Wall Terminal Kit FLUE-B-EVOWALL
7 Roof Terminal 3791309
8 Flat Roof Slate 3791617
9 Pitched Roof Slate 3791618
10 Flue Bracket 3791616
15 Plume Kit 3791480
*Wall terminal kit includes wall terminal and 87°/93° bend
Single/Two Pipe Flue System
Item Flue Component 100mm
12 1950mm Length 3791297
12 1000mm Length 3791299
12 500mm Length 3791594
13 87°/93° Bend 3791300
14 45° Bend 3791301
17 Mesh Terminal 3791607
10 Flue Bracket 3791302
15 Plume Kit 3791480
18 Air Filter 3905046
20 Air Inlet Cover 452002280
Page 17 of 33
The image on the left is an example
installation of a flexible flue solution where the
air is being taken in via the chimney cover and
then down through the chimney into the
150mm connection on the wall plate, where it
will then be taken into the boiler via concentric
flue pipe.
The flue gas is being taken from the boiler
through concentric flue pipe to the wall plate,
where it is connected to the flexible flue and
taken out through the flexible pipe to the
termination at the chimney cover.
This solution allows the boiler to operate as a
room sealed device taking combustion air from
the brick chimney which is ventilated to allow
air to be taken from outside. We recommend
that the chimney is swept prior to installation to
reduce the risk of dirt to be drawn into the
boiler.
This is mostly used in older buildings where
modification of the building is prohibited.
3.5 Flexible Flue Components
At Elco Heating Solutions we can offer a flexible flue solution for when the flue
gas system needs to be routed through an existing chimney/void such as in listed
buildings where amendments to the building layout cannot be made.
We have a simple starter kit that has been assembled to make it easier when
selecting the required items. The starter kit includes a chimney cover, bottom
bend and support, 5 spider brackets, flexible and rigid couplings and the
installation tool.
Adding this kit to the appropriately sized flexible flue liner and the concentric/PPs
flue from the boiler, this gives you a kit that will allow you to take the flue gas to
the desired termination location as per the image.
Example of a 110mm Flexible Flue Installation
Flue Component 80mm 110mm
12.5m Flexible Flue Liner FLUEBRECAA500
15m Flexible Flue Liner FLUECRECAA600
25m Flexible Flue Liner FLUEBREDAA600 FLUECREDAA600
Rigid to Flexible Adaptor FLUEBREMAA600 FLUECREMAA700
Flexible to Flexible Adaptor FLUEBREFAA600 FLUECREFAA600
Flexible to Rigid Adaptor FLUEBREGAA700 FLUECREGAA700
Bracing Brackets (Pack of 5) FLUEBREJAA500 FLUECREJAA500
Chimney Cover c/w Flex to Rigid Adaptor FLUEBRCTAA500 FLUECRCTAA500
Chimney Support Bend FLUEBKCRAA000 FLUECKCRAA000
Starter Kit BRFY.AA.000 CRJEAA000
100-110 Increaser FLUE113795
Mesh Terminal FLUE173121 FLUE173121
Mesh Terminal
FLUE173121
Chimney Cover
FLUECRCTAA500
Bracing Brackets
FLUECREJAA500
15m Flexible Flue Liner
FLUECRECAA600
Chimney Support Bend
FLUECKCRAA00
100/150 Wall Plate
FLUECBDDAA600
100 to 110 Increaser
FLUE113795
Page 18 of 33
3.6 Cascade Flue Components
We currently do not do cascade flue for the Thision S
Plus. If you wish to install a cascade flue system for
the Thision S Plus range, please contact a specialist
flue supplier.
Elco only supply the cascade flue header as pictured,
the flue pipe exiting the cascade flue header will need
to be sourced via a flue specialist. The air intake
header will be need to be sourced by a flue specialist.
Please see the relative boiler operation and
installation manual for the information regarding
cascade flue system lengths and diameters.
Thision L Evo
Flue Component DN150 DN200
2 Boilers In-Line Cascade Flue 452001320 452001420
3 Boilers In-Line Cascade Flue 452001340 452001440
4 Boilers In-Line Cascade Flue 452001360 452001460
5 Boilers In-Line Cascade Flue 452001380 452001480
6 Boilers In-Line Cascade Flue 452001400 452001500
3 Boilers Back to Back Cascade Flue 452001520 452001640
4 Boilers Back to Back Cascade Flue 452001540 452001660
5 Boilers Back to Back Cascade Flue 452001560 452001680
6 Boilers Back to Back Cascade Flue 452001580 452001700
7 Boilers Back to Back Cascade Flue 452001600 452001720
8 Boilers Back to Back Cascade Flue 452001620 452001740
Thision L Eco
Flue Component DN150 DN200
2 Boilers In-Line Cascade Flue 452004325 452004350
3 Boilers In-Line Cascade Flue 452004330 452004355
4 Boilers In-Line Cascade Flue 452004335 452004360
5 Boilers In-Line Cascade Flue 452004340 452004365
6 Boilers In-Line Cascade Flue 452004345 452004370
3 Boilers Back to Back Cascade Flue 452004375 452004405
4 Boilers Back to Back Cascade Flue 452004380 452004410
5 Boilers Back to Back Cascade Flue 452004385 452004415
6 Boilers Back to Back Cascade Flue 452004390 452004420
7 Boilers Back to Back Cascade Flue 452004395 452004425
8 Boilers Back to Back Cascade Flue 452004400 452004430
Page 19 of 33
3.4 Cascade Flue Components continued…
Thision L Evo Cascade Flue Accessories
Flue Component Part Code
Cover for Combustion Air Inlet 100mm For L Evo 60 – 120 Models
452002280
Cover for Combustion Air Inlet 130mm For L Evo 140 Model
452002300
Cascade Flue System Adaptor for Thision L Evo 140 452001760
Thision L Eco Cascade Flue Accessories
Flue Component DN150 DN200
2 Boiler In-Line Cascade Flue Fixation Rail 452004435 452004435
3 Boiler In-Line Cascade Flue Fixation Rail 452004440 452004440
4 Boiler In-Line Cascade Flue Fixation Rail 452004445 452004445
5 Boiler In-Line Cascade Flue Fixation Rail 452004450 452004450
6 Boiler In-Line Cascade Flue Fixation Rail 452004455 452004455
3 & 4 Boiler Back to Back Cascade Flue Fixation Rail 452004435 452004435
5 & 6 Boiler Back to Back Cascade Flue Fixation Rail 452004440 452004440
7 & 8 Boiler Back to Back Cascade Flue Fixation Rail 452004445 452004445
Air Filter 3905046
Cover for Combustion Air Inlet 100mm 452002280
*A cover for the air intake is supplied with the cascade flue set for the Thision L Eco boilers
Page 20 of 33
4. Flue Component Dimensions
4.1 Concentric flue parts dimensions
Concentric Wall Terminal
1 Part Part Code D1 D2 D3 L1 X1
80/125 3791635 80 125 220 955 800
2 100/150 3791309 100 150 230 870 690
110/150 3791768 110 150 230 870 690
3
Concentric Roof Terminal
Part Part Code D1 D2 D3 D4 L1 L2 X1
80/125 3791635 80 125 140 190 1150 250 600
4
Concentric Roof Terminal
Part Part Code D1 D2 D3 L1 X1
100/150 3791633 100 150 175 1195 420
110/150 3791659 110 150 175 1195 420
1
2
4 3
Page 21 of 33
4.1 Concentric flue parts dimensions continued…
1
Concentric 90° Bend
Part Part Code D1 D2 L1 L2 X1
80/125 3791643 80 125 130 120 80
100/150 3791306 100 150 130 145 95
110/150 3791623 110 150 145 130 95
2
Concentric 45° Bend
Part Part Code D1 D2 L1 L2 X1
80/125 3791644 80 125 90 90 40
100/150 3791307 100 150 110 120 70
110/150 3791624 110 150 120 110 70
3
1000mm Concentric Straight Length
Part Part Code D1 D2 L1 X1
80/125 3791641 80 125 1000 950
100/150 3791304 100 150 1000 944
110/150 3791621 110 150 1000 950
500mm Concentric Straight Length
Part Part Code D1 D2 L1 X1
80/125 3791642 80 125 500 450
100/150 3791305 100 150 500 450
110/150 3791622 110 150 500 450
4
1950/2000mm Concentric Straight Length Part Part Code D1 D2 L1 X1
80/125 3791646 80 125 1950 1890
100/150 3791297 100 150 1950 1945
4
2 1
3
Page 22 of 33
4.1 Concentric flue parts dimensions continued…
1
80/125 to 100/150 Concentric Increaser
Part Part Code D1 D2 D3 D4 L1 X1
80/125 3791664 80 125 100 150 165 110
80/125 to 110/150 Concentric Increaser
Part Part Code D1 D2 D3 D4 L1 X1
80/125 3791659 80 125 110 150 165 115
2
100/100 to 80/125 Concentric Adaptor
Part Part Code D1 D2 D3 L1 L2 X1 X2
100/100 3791648 100 80 125 65 145 305 180
130/130 to 110/150 Concentric Adaptor
Part Part Code D1 D2 D3 L1 L2 X1 X2
130/130 3791647 130 110 150 65 145 305 180
3
100/100 to 100/150 Adaptor
Part Part Code D1 D2 D3 L1 L2 X1 X2
100/100 3590656 110 100 150 80 179 284 148
4
100/100 to 110/150 Adaptor
Part Part Code D1 D2 D3 L1 L2 X1 X2
100/100 3791653 100 110 150 52 163 320 175
1
2 3 4
Page 23 of 33
4.2 PPS flue parts dimensions
1
2000mm PPs Straight Length Part Part Code D1 L1 X1
80 3791584 80 1950 1895
100 3791593 100 1945 1890
110 3791345 110 1950 1895
125 3791609 125 2075 2000
1000mm PPs Straight Length Part Part Code D1 L1 X1
80 3791573 80 100 945
100 3791299 100 995 940
110 3791595 110 1000 945
125 3791608 125 1075 1000
500mm PPs Straight Length Part Part Code D1 L1 X1
80 3791585 80 500 445
100 3791594 100 495 440
1000mm UV Resistant PPs Straight Length
Part Part Code D1 L1 X1
80 3791577 80 100 945
500mm UV Resistant PPs Straight Length
Part Part Code D1 L1 X1
80 3791578 80 500 445
2
90° Bend PPs and UV Resistant PPs
Part Part Code D1 L1 L2 X1
80 3791574 80 130 120 75
100 3791300 100 145 130 90
110 3791596 110 120 110 60
125 3791610 125 145 150 70
3
45° Bend PPs and UV Resistant PPs
Part Part Code D1 L1 L2 X1
80 3791575 80 90 90 45
100 3791301 100 110 120 75
110 3791597 110 90 85 35
125 3791611 125 100 100 35
2 1 3
Page 24 of 33
4.3 Accessory parts dimensions
1
Stainless Steel Mesh Terminal
Part Part Code D1 L1 X1
90mm AT-3791582 90 125 47
120mm AT-3791607 120 130 60
160mm AT-3791619 160 140 60
200mm AT-3791620 200 140 60
2
Flat Roof Flashing
Part Part Code D1 D2 X1
80/125 AT-3791613 135 410 100
100/150 AT-3791617 170 450 100
3
Pitched Roof Flashing
Part Part Code D1 L1 α (°)
80/125 AT-3791614 142 500 25° - 45°
100/150 AT-3791618 172 500 25° - 45°
4
PPs Increaser
Part Part Code D1 D2 L1 X1
80 to 100 3791662 80 100 165 110
80 to 110 3791651 80 110 140 85
100 to 110 3791652 100 110 160 105
5
80/125 to 80/80 PPs Adaptor
Part Part Code D1 D2 D3 D4 L1 L2 L3 X1 X2
80/125 3791658 80 80 80 125 175 150 255 130 120
6
Plume Kits
Part Part Code D1
80mm AT-3791639 80
100mm AT-3791480 100
4
1 2
3
2
5
6
Page 25 of 33
4.4 Flexible flue dimensions
1
80mm Flexible Flue Liner
Part Part Code D1 L1 X1
12.5m AT-3791586 80 12.5m 1490
25m AT-3791587 80 25m 1490
110mm Flexible Flue Liner
Part Part Code D1 D2 X1
15m AT-3791598 110 15m 1490
25m AT-3791599 110 25m 1490
2
Chimney Support Bend
Part Part Code D1 L1 L2 L3 L4 X1
80mm AT-3791591 80 120 130 212 390 80
110mm AT-3791605 110 120 110 230 390 65
3 100mm to 110mm Increaser
Part Part Code D1 D2 L1 X1
100-110 AT-3791652 100 110 160 105
4
Flexible Flue Brackets (5 Pack)
Part Part Code D1 D2 L1
80mm AT-3791589 80 40 400
110mm AT-3791602 110 40 400
5 100mm to 110mm Increaser
Part Part Code D1 L1 X1 X2
110mm AT-3791601 110 190 50 50
1 2 3
4
5
Page 26 of 33
4.4 Flexible flue parts dimensions continued…
1
Chimney Cover for Flexible Flue
Part Part Code D1 D2 L1
80mm FLUEBRCTAA500 48 246 188
110mm FLUECRCTAA500 72 246 188
2
Flex to Flex Adaptor
Part Part Code D1 L1 X1
80mm FLUEBREFAA600 80 187 87
110mm FLUECREFAA600 110 187 87
1 2
Page 27 of 33
4.5 Cascade flue dimensions
The cascade flue kits that are supplied for the Thision L Eco boilers are built from individual kits and then
multiplied dependant on how many boilers is in the installation. For example, if you have 4 boilers on an
in-line cascade frame then the kit will come with 4 sections of cascade flue and so on.
So the overall length of the cascade flue will be the individual kits multiplied by the number of boilers.
Each individual section comes with a vertical single skin pipe to be used to take the flue gas into the
cascade flue header. This section will be supplied in a 500mm length. To achieve the 3° incline back to
the boilers this length will need to be cut down to facilitate this requirement.
Thision L Eco DN150 In-Line Cascade Flue
Thision L Eco DN200 In-Line Cascade Flue
Page 30 of 33
4.5 Cascade flue dimensions continued…
The cascade flue kits that are supplied for the Thision L Evo boilers is a 2 boiler version of the casade
header, however further additional extension kits and are added on depending on how many boilers is in
the installation. For example, if you have 4 boilers on an in-line cascade frame then the kit will come with
one 2 boiler in-line cascade flue set and 2 additional extension kits of cascade flue.
The overall length of the cascade flue will be the 2 boiler cascade header plus the individual extension kits
multiplied by the number of boilers.
Each extension kit comes with a vertical single skin pipe to be used to take the flue gas into the cascade
flue header. This section will be supplied in a 500mm length. To achieve the 3° incline back to the boilers
this length will need to be cut down to facilitate this requirement and this information can be found in the
cascade installation manual for the Thision L Evo boiler.
DN150 In-Line Cascade Flue
603mm
1493mm
205mm Centre to Centre
285mm
DN150
100mm 100mm
621mm
362mm DN200 In-Line Cascade Flue
1493mm
205mm Centre to Centre
DN200
100mm 100mm
Page 31 of 33
4.5 Cascade flue dimensions continued…
DN200 Back to Back Cascade Flue
DN150 Back to Back Cascade Flue
100mm
100mm
100mm
100mm
100mm
100mm
100mm
100mm
DN200
439mm
684mm
1422mm
149mm Centre to Centre
149mm Centre to Centre
685mm
488mm
149mm Centre to Centre
149mm Centre to Centre
1401mm
Page 32 of 33
4.5 Cascade flue dimensions continued…
DN150 In-Line Cascade Flue Extension
100mm
DN150
689mm
DN200 In-Line Cascade Flue Extension
100mm
715mm
DN200
DN150 Back to Back Cascade Flue Extension
DN200 Back to Back Cascade Flue Extension
100mm
100mm
DN150
690mm
100mm
100mm
710mm
DN200
Page 33 of 33
Elco Heating Solutions 3 Juniper West, Fenton Way, Southfields Business Park,
Basildon, Essex, SS15 6SJ
Tel: 01268 546700 Fax: 01268 888250
www.elco.co.uk
This publication is issued subject to alteration or withdrawal without notice. The
illustrations and specifications are not binding in detail. All offers and sales are subject
to the Company’s current terms and conditions of sale.
Recommended