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© Baxi Heating UK Ltd 2007
G U I D A N C E N OT E S
Flue Accessories (suitable for use on HE Boilers)Ø 60/100 Flue SystemsØ 70/110 Flue SystemsØ 80/125 Flue SystemsØ 80/80 Twin Flue Systems
READ THESE INSTRUCTIONS IN CONJUNCTION WITH THE BOILERINSTALLATION INSTRUCTIONS BEFORE FITTING THE FLUE
Please leave these instructions with the Installation & Servicing Instructions.
page 2© Baxi Heating UK Ltd 2007
Flue Accessory Group A is suitable only forBaxi Duo-tec Combi HEBaxi Megaflo System HEBaxi Platinum Combi HEBaxi Platinum System HEBaxi Combi HEPotterton Promax Combi HEPotterton Promax System HEPotterton Gold Combi HEPotterton Promax HE StorePotterton Performa Combi HEPotterton Performa System HEPotterton Suprima HEMain HEMain Combi HEMain System HE
Flue Accessory Group B is suitable only forBaxi Solo HEBaxi Combi HE PlusBaxi Platinum HEPotterton Promax HE PlusPotterton Promax FSB HE
Flue Accessory Group C is suitable only forBaxi CombiPotterton PerformaMain Combi
Flue Accessory Group D is suitable only forPotterton KingfisherPotterton SuprimaMain Multipoint FF
Flue Accessory Group E is suitable only forPotterton Powermax HE
Flue Accessory Group F is suitable only forBaxi Solo 3 PFL
Flue Accessory Group G is suitable only forBaxi Duo-tec Combi HEBaxi Megaflo System HEBaxi Platinum Combi HEBaxi Platinum System HEPotterton Promax Combi HEPotterton Promax System HEPotterton Gold Combi HEPotterton Promax HE Store
Flue Accessory Group J is suitable only forMain Multipoint BF
Flue Accessory Group K is suitable only forBaxi Duo-tec Combi HEBaxi Megaflo System HEBaxi Platinum Combi HEBaxi Platinum System HEBaxi Combi HEPotterton Promax Combi HEPotterton Promax System HEPotterton Gold Combi HEPotterton Promax HE StorePotterton Performa Combi HEPotterton Performa System HEPotterton Suprima HEMain HEMain Combi HEMain System HE
Flue Accessory Group L is suitable only forBaxi Solo HEBaxi Combi HE PlusBaxi Platinum HEPotterton Promax HE PlusPotterton Promax FSB HE
Flue Accessory Group N is suitable only forBaxi Duo-tec Combi HEBaxi Megaflo System HEBaxi Platinum Combi HEBaxi Platinum System HEBaxi Combi HEPotterton Promax Combi HEPotterton Promax System HEPotterton Gold Combi HEPotterton Promax HE StorePotterton Performa Combi HEPotterton Performa System HEPotterton Suprima HEMain HEMain Combi HEMain System HE
Flue Accessory Group P is suitable only forBaxi Solo HEBaxi Combi HE PlusBaxi CombiBaxi Platinum HEBaxi Solo 3 PFLPotterton PerformaPotterton Promax HE PlusPotterton Promax FSB HEMain Combi
Flue Accessory Group Q is suitable only forPotterton Powermax HE
Flue Accessory Group R is suitable only forPotterton Suprima
100/110 125 Plume TwinBaxi Duo-tec Combi HE A G K NBaxi Megaflo System HE A G K NBaxi Solo HE B - L PBaxi Platinum Combi A G K NBaxi Combi HE Plus B - L PBaxi Combi HE A - K NBaxi Combi (SE) C - - PBaxi Platinum HE B - L PBaxi Solo 3 PFL F - - PBaxi Platinum System HE A G K N
Potterton Gold Combi HE A G K NPotterton Promax Combi HE A G K NPotterton Performa HE (Combi) A - K NPotterton Performa (SE Combi) C - - PPotterton Powermax HE E - - QPotterton Promax HE Store A G K NPotterton Promax HE Plus B - L PPotterton Suprima HE A - K NPotterton Suprima (SE) D - - RPotterton Promax FSB HE B - L PPotterton Kingfisher (SE) D - - -Potterton Promax System HE Plus A G K NPotterton Performa System HE A - K N
Main HE A - K NMain Combi HE A - K NMain Combi (SE) C - - PMain System HE A - K NMain Multipoint FF (Waterheater) D - - -
Balanced Flue SystemMain Multipoint BF (Waterheater) J - -
Concentric
Flue GroupsAppliances
page 3© Baxi Heating UK Ltd 2007
Flue systems must be constructed using only componentsapproved for use with the appliance and installed in accordancewith BS 5440 Part 1 and any manufacturers instructions.
In order to meet the requirements of the Gas Safety (Installation& Use) Regulations, provision should be made such that all fluejoints and supports can be inspected.
The flue system should have a continuous fall back to the boiler(1.5° to 3°) and supported every metre using suitable supportbrackets.
Consideration must be given to protect exposed parts of theoutlet duct where accidental touch may occur.
All fittings should be fully engaged. The approximate engagementis 40mm.
Pipe extensions can be cut to length if necessary. The cut endshould be de-burred to prevent damage to seals whenassembling to a fitting.
The MAXIMUM total equivalent length is given in the boilerInstallation & Servicing Instructions.
IMPORTANT: If the flue system is to be fitted prior tothe boiler, temporary precautions must be taken to preventrain entry into the room of installation. Any precautionarymeasures must be removed prior to fitting the boiler.
GENERAL NOTE
page 4© Baxi Heating UK Ltd 2007
Key Accessory Size Code NoFLUE GROUP AConcentric Flue System 100mm diameterA3 Telescopic Internal Flue Kit 315-500mm 5119654A2 Telescopic Flue (incl elbow) 315-500mm 5118069A Horizontal Flue Terminal (incl elbow) 5118489B Flue Extension 1000mm 5111074C Flue Bend 93° 5111075D Flue Bend 135° 5111076D Flue Bend (pair) 135° 5111085U Pipe Support (painted) 100mmØ 5111080R Vertical Flue Adaptor (use with 5111078) 5111070T Vertical Flue Boiler Adaptor 5111065
(Only Potterton Suprima HE/Main HE heat only)P Wall Liner 5111067S Flue Terminal Deflector 5111068FLUE GROUP GFlue System 80/125mm diameterA4 Horizontal Flue Kit 5118580B Straight Extension Kit 1000mm 5118584D Bend (pair) 135° 5118597C Bend 91.5° 5118588U Pipe Support 125mmØ 5118610
Key Accessory Size Code NoFLUE GROUP NTwin Flue System 80mm diameterE Flue Extension (pair) 1000mm 5111087F Flue Bend (pair) 90° 5111072G Flue Bend (2 pair) 135° 5111086J Vertical Flue Boiler Adaptor Kit 5111079
(Not Potterton Suprima HE/Main HE heat only)O Vertical Flue Boiler Adaptor Kit 5111071
(Only Potterton Suprima HE/Main HE heat only)H Vertical Flue Adaptor 5111084Y Flue Horizontal Terminal Kit (Not Band B appliances) 5120172W Pipe Support (pair) 80mmØ 5111081FLUE GROUP A, N, GVertical Flue KitsK Vertical Flue Terminal (use with 5111070) 5111078K1 Vertical Flue Terminal 5118576
(Not Potterton Suprima HE/Main HE heat only)L Pitch Roof Flashing 25°/45° 246141
Pitch Roof Flashing 35°/55° 246142M Roof Cover Plate 246143N Flat Roof Flashing 246144
A2A
B
K, K1
RDC
N
U,W
S
L H
J
M
FLUE ACCESSORIES For Use With Boilers Compatible withFlue Groups
Ø60/100 Flue SystemsØ80/125 Flue SystemsØ80/80 Twin Flue Systems
E
G F
O
(Only Potterton Suprima HE/Main HE heat only)
T
PA3
(A2 & A3 not for Potterton Suprima HE/Main HE heat only/Promax HE Store)
(Only Potterton Suprima HE/Main HE heat only)
A4
GN
A
Y
page 5© Baxi Heating UK Ltd 2007
Key Accessory Size Code NoFLUE GROUP BConcentric Flue System 110mm diameterA1 Horizontal Flue Terminal 850mm 243013BAXA Horizontal Flue Terminal (incl elbow) 236921B Flue Extension 1000mm 241695
500mm 241694250mm 241692
C Flue Bend 93° 241687D Flue Bend (pair) 135° 241689U Pipe Support 110mm 243014BAXT Vertical Flue Adaptor Boiler (Not Baxi Combi HE Plus) 5106888T1 Vertical Flue Adaptor Boiler (Baxi Combi HE Plus) 242886S Flue Terminal Deflector 248167
Key Accessory Size Code NoFLUE GROUP PTwin Flue System 80mm diameterE Flue Extension 1000mm 246137
500mm 246136250mm 246135
F Flue Bend (pair) 90° 5121560G Flue Bend (2 pairs) 135° 5121561J Vertical Flue Boiler Adaptor Kit 242757W Pipe Support (pair) 80mm 5111081FLUE GROUP B, PVertical Flue KitsK Vertical Flue Terminal 242802L Pitched Roof Flashing 25°/50° 243015M Roof Cover Plate 243131N Flat Roof Flashing 243016BAX
A A1 B
K
TDC
N
U,W S
L
J
M
E
G F
FLUE ACCESSORIES For Use With Boilers Compatible withFlue Groups
Ø70/110 Flue SystemsØ80/80 Twin Flue Systems
T1
BP
(Not Baxi Combi HE Plus) (Only Baxi Combi HE Plus)
For Ø70/110Flue Systems
page 6© Baxi Heating UK Ltd 2007
Y
X
A
BY
X
For Ø70/110 Flue Systems
Total equivalent length =A+B+C+D+2x90°Bends
All vertical and angled runs must be included,measured from the boiler adaptor (point X) tothe joint with the flue terminal (point Y). One93° bend or two 45° bends can be includedwithout reduction of the flue length.
If further bends are required the flue lengthmust be reduced by the following amounts:-
1 metre for each 93° bend0.5 metre for each 45° bend
NOTE: Horizontal flue pipes should always be installed with a 1.5° to 3° fall from the terminal to allow condensate to run back to the boiler.
1. If required, push the flue deflector over the terminal end and rotate to theoptimum angle for deflecting plume. Secure the deflector to the terminalwith screws provided.
NOTE: A terminal guard is still required.
FLUE OPTIONS Horizontal Flue System Examples
Z
Y
This bend is equivalent to1 metre
For Ø60/100 Flue Systems
Total equivalent length =A+B+C+2x90°Bends
B
AC
This bend is equivalent to1 metre
C
DThis bend is equivalent to1 metre
This bend is equivalent to1 metre
DO NOT DIRECT THE FLUE DEFLECTOR TOWARDS A WALL.
Flue Terminal
Flue Deflector
The MAXIMUM total equivalent lengthis stated in the Installation & ServicingInstructions supplied with each boiler.
page 7© Baxi Heating UK Ltd 2007
X
Y
X
Y
X
Y
X
C
Total EquivalentLength
RoofTerminal
RoofTerminal
A
B C
RoofTerminal
A
B
This bend is equivalent to1 metre
Total Equivalent Length =A+B+C+1x90°Bend
All vertical and angled runs must be included,measured from the boiler adaptor (point X) to thejoint with the flue terminal (point Y). One 93° bendor two 135° bends can be included withoutreduction of the flue length.
If further bends are required the flue length must be reduced by the following amounts:-
1 metre for each 93° bend0.5 metre for each 135° bend
Twin & Vertical Flue System Examples
Total Equivalent Length= A+B+C
FLUE OPTIONS
The total equivalent lengthfor this example is
17.2 + 34.4 = 51.6 metres.
1m extension
135°bend
90°bend
1m
1.3m
4.8m
5
2
2
5.0m
2.6m
9.6m
AIR DUCT EXAMPLENo of
fittings/pipesSub totalEquivalent
Length Value
Equivalent Length Air Duct = 17.2m
1m extension
135°bend
90°bend
2m
2.6m
9.6m
5
2
2
10.0m
5.2m
19.2m
FLUE DUCT EXAMPLENo of
fittings/pipesSub totalEquivalent
Length Value
Equivalent Length Flue Duct = 34.4m
Y
The MAXIMUM total equivalentlength is stated in the Installation& Servicing Instructions suppliedwith each boiler.
The MAXIMUM total equivalent lengthis stated in the Installation & ServicingInstructions supplied with each boiler.
1m Minto
15m Max
120mm MinApart
page 8© Baxi Heating UK Ltd 2007
Key Accessory Size Code No
Plume Displacement 60/100mm diameterA Plume Displacement Kit Ø60 5118638B Plume Extension 1000mm 5121368C Plume Bend 93° 5121369D Plume Bend (pair) 135° 5121370
Key Accessory Size Code No
Plume Displacement 70/110mm diameterA Plume Displacement Kit Ø70 5121371B Plume Extension 1000mm 5121372C Plume Bend 93° 5121373D Plume Bend (pair) 135° 5121374
PLUME DISPLACEMENT ACCESSORIES
For Use With Flue Group Ø70/110 Flue Systems
For Use With Flue Group Ø60/100 Flue Systems
C
D
B
C
D
B
A
A
K L
page 9© Baxi Heating UK Ltd 2007
Flue Duct AdaptorEngage the flue duct adaptor on the boiler adaptor, makingsure that it is pushed down as far as possible.
Air duct adaptorUndo the screws securing the blanking plate to the boiler toppanel. Discard the plate.
There are three restrictor plates supplied in the kit. For 12 kW(models) use the one marked ‘23’. The one marked ‘27’ must beused on the 15/18 kW (models). The third restrictor is for allother models. This restrictor is used either way up dependingupon model of boiler - see diagram below.
IMPORTANT: The restrictor MUST be positioned as shownin the diagrams below.
Take one of the gaskets supplied in the kit and place on theboiler top panel.
Align the appropriate restrictor as shown. Position the secondgasket over the restrictor.
Using the screws previously removed secure the inlet adaptor tothe top panel.
Continue to fit the twin flue system.
Flue Duct Adaptor
Air Duct Adaptor
Gasket
Restrictor
Gasket
12 kW models
15/18 kW models
24 kW models
28/32/33/40 kW models
Position of Restrictor
Blanking Plate
FITTING THE BOILER ADAPTORS
For Use With Flue Group Ø80/80 Twin Flue SystemsN
Boiler Adaptor
FITTING THE BOILER ADAPTORS
page 10© Baxi Heating UK Ltd 2007
Vertical FlueAdaptor
Gasket
The relevant adaptor supplied with the flue pack is fixed tothe boiler with a gasket and screws.Ensure the lip seals are seated correctly in their grooves.Place the flue gaskets on the boiler. Apply a suitable lubricant to the ‘O’ ring seal on theadaptor and engage the flue and air adaptors onto theboiler. Secure each with screws.
For Use With Flue Group Ø70/110 Flue SystemsØ80/80 Twin Flue SystemsØ80/125 Flue Systems
Gasket
Vertical FlueAdaptor Combi HE Plus only
Twin FlueAdaptors
BP
Vertical FlueAdaptor
G
PB
BG
page 11© Baxi Heating UK Ltd 2007
R
J,K
S
T
U
Special Requirements for Vertical Balanced Flue
POSITION SPACING MIN
J From a surface or boundary line facing a terminal 600mm
K From a terminal facing a terminal 600mm
R From adjacent wall to flue 300mm
S From an adjacent opening window 1000mm
T Adjacent to windows or openings on pitched roofs 600mm
U Below windows or openings on pitched roofs 2000mm
Fitting the Roof Terminal to the Flashing:
Ensure the roof terminal collar is correctly seated onto theflashing spigot to prevent leakage.
FITTING THE ROOF TERMINAL
FlashingSpigot
Collar
CollarFlashingSpigot
Roof TerminalAdaptor
Flue TerminalAir Duct
Ø 80 Air Duct Ø 80 Flue Duct (part of FlueTerminal)
x y
It is necessary to cut the air duct on the flueterminal. The air duct must be cut so thatthe dimensions x & y are equal.
For Roof Terminals
1. In the case of a pitched roof 25 - 50 degrees, position the lead tile toreplace/flash over existing roof tiling. Make an aperture in the roof suitable forthe lower tube of the roof terminal and ensure the integrity of the roof cover ismaintained. The adjustable plastic collar can either be positioned on the lead tileor the lower tube of the roof terminal prior to the final positioning of thevertical flue through the tile. Check the collar is correctly located to suitrequired roof pitch (either 25° to 38° or 37° to 50°). From inside the roofadjust the flue to a vertical position and secure to the roof structure with theclamp supplied.
2. For flat roof installations the aluminium flashing must be incorporated into theroof covering and the appropriate aperture made in the roof decking. Thevertical flue is lowered onto the flashing making sure the collar of the fluelocates securely with the flashing. (A mastic seal may be necessary). From insidethe roof, adjust the flue to a vertical position and secure to the roof structurewith the clamp supplied.
IMPORTANT: If the boiler is not fitted immediately after the flue system,temporary precautions must be taken to prevent rain entry into the room ofinstallation. Any precautionary measures must be removed prior tocommissioning the boiler.
© Baxi Heating UK Ltd 2007Comp No 5122412 - Iss 1 - 2/07
MULTIFITA Registered Trademark of Baxi Heating UK LtdBrooks House, Coventry Road, Warwick. CV34 4LL
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