VOKERA AquaNova Release note

Installation
& Servicing
Instructions
THESE INSTRUCTIONS
TO BE RETAINED
BY USER
Vokèra is a licensed member of the Benchmark scheme
which aims to improve the standards of installation and
commissioning of domestic hot water systems in the UK.
AquaNova
Water heater

Contents
Design principles & operating sequence Page
1.1 Principle components 2
1.2 Mode of operation 2
1.3 Safety devices 2
Technical data Page
2.1 Performance 3
2.2 Gas pressure 3
2.3 Dimensions 3
2.4 Clearances 3
2.5 Connections 3
2.6 Electrical 3
2.7 Flue details 3
General requirements Page
3.1 Related documents 4
3.2 Location of appliance 4
3.3 Gas supply 4
3.4 Flue system 4
3.5 Air supply 4
3.6 Water pipe work 4
3.7 Electrical supply 5
3.8 Timber framed buildings 5
Installation Page
4.1 Delivery 5
4.2 Contents 5
4.3 Unpacking 5
4.4 Preparation for mounting the appliance 5
4.5 Fitting the flue 6
4.6 Connecting the gas & water 10
4.7 Electrical connections 10
Commissioning Page
5.1 Gas supply installation 11
5.2 Water pipe work 11
5.3 Pre-operation checks 11
5.4 Initial lighting 11
5.5 Checking the burner pressure 11
5.6 Setting the outlet temperature 11
5.7 Final checks 11
5.8 Instructing the user 11
Servicing Page
6.1 General 12
6.2 Routine annual servicing 12
6.3 Replacement of components 12
6.4 Component removal procedure 12
6.5 NTC thermistors removal 12
6.6 High limit thermostat removal 12
6.7 Flow switch removal 12
6.8 Gas valve removal 13
6.9 Burner, injectors and spark/sense electrode removal 13
6.10 Flue fan removal 13
6.11 Heat exchanger removal 14
6.12 Air pressure switch removal 14
Checks, adjustments, and fault finding Page
7.1 Checking appliance operation 14
7.2 Appliance mode of operation 14
7.3 Checking/adjusting burner pressure 14
7.4 External faults 15
7.5 Electrical checks 15
7.6 Fault finding 15
7.7 Fault codes 16
Wiring diagrams Page
8.1 External wiring 21
Exploded diagrams Page
9.1 Table 1 23
9.2 Table 2 24
L.P.G. instructions Page
10.1 Technical data 25
10.2 Related documents 25
10.3 Gas supply 25
10.4 Gas supply installation 25
10.5 Checking/Adjusting the burner pressure 25

1
INTRODUCTION
General layout
1 Gas valve
2 High limit thermostat
3 Electrode
4 NTC sensor
5 Pressure differential switch
6 Silicone pressure tube (+)
7 Silicone pressure tube (-)
8 Fan assembly
9 Heat exchanger
10 Main burner
11 Flow switch
TheVokeraAquaNovaisaninstantaneouswaterheater,
which - by design - incorporates electronic ignition, NTC
temperature control, continuous gas modulation, and
status/fault indicators.
Itisproducedasaroomsealed,categoryII2H3+appliance,
suitableforwallmountingapplicationsonly.Itisprovided
with a fan powered flue outlet with an annular co-axial
combustionairintakethat can be rotated – horizontally–
through 360 degrees for various horizontal or vertical
applications.
TheAquaNovacanalsobeusedwiththeVokeratwinflue
system.
Fig. 1

2
SECTION 1 DESIGN PRINCIPLE AND OPERATING SEQUENCE
1.1 PRINCIPLE COMPONENTS
●A fully integrated electronic control board
featuring electronic temperature control, self-
diagnostic fault indicator, continuous gas
modulation.
●Electronic ignition with flame supervision.
●Fan.
●Differential air pressure switch.
●Two-stage gas valve.
1.2 MODE OF OPERATION
When there is a request for hot water via a hot
water outlet or tap, the water flow switch senses
water movement thereby energising the fan, the
fan proves the differential air pressure switch
whichin-turnallowsanignitionsequencetobegin.
Ignition is sensed by the electronic circuitry to
ensure flame stability at the burner. Once
successful ignition has been achieved, the
electronic circuitry increases the gas rate to
maximumormodulatestosuitthesetrequirement.
When the appliance reaches the desired
temperaturetheburner will modulatetomaintain
thedesiredtemperature.Shouldthetemperature
continuetoincrease,theburnerwillshutoffwhen
the maximum operating temperature is attained.
Whentherequestforhotwaterhasbeensatisfied
the appliance fan may continue to operate to
dissipate any residual heat within the appliance.
1.3 SAFETY DEVICES
When the appliance is in use, safe operation is
ensured by:
●a high limit thermostat that over-rides the
temperaturecontrolcircuittopreventorinterrupt
the operation of the burner;
●adifferentialairpressureswitchthatchecksthe
operation of the fan and flue thereby allowing
safe operation of the burner;
●a flame supervision device that will shut off the
gas supply to the burner if there is no flame
sensed within 7 seconds.
Fig. 2
inlet cold water
Fan assembly
Air pressure switch
outlet cold water
Heat exchanger
Burner
Flow regulator
Gas
Flow switch
High limit thermostat
NTC sensor

3
SECTION 2 TECHNICAL DATA
2.1 Performance
Heat input 32,0 kW
Heat output (max) 28,8 kW
Heat output (min) 10,0 kW
Minimum working pressure 0,15 kW
Maximum working pressure 10,0 bar
Minimum flow rate 2 litres per minute
Hot water - 35°C temperature rise 11,8 litres per minute
2.2 Gas pressure
Inlet pressure (G20) 20,0 mbar
Maximum burner pressure 12,0 mbar
Minimum burner pressure 1,5 mbar
Gas rate 3,5 m3/h
Injector size 15 x 1,30mm
2.3 Dimensions
Height 640 mm
Width 400 mm
Depth 246 mm
Weight 20 kg
2.4 Clearances
Top 150 mm from casing or 25 mm above
flue elbow (whichever is applicable)
Bottom 150 mm
Sides 50 mm
Front 600 mm
2.5 Connections
Cold water inlet 15 mm (compression)
Hot water outlet 15 mm (compression)
Gas 15 mm copper
2.6 Electrical
Voltage 230V/~ 50hz
Power consumption 85 W
Internal fuse 2 AF
External fuse 3 A
2.7 Flue details
Maximum horizontal flue length (concentric) 2,4 metres
Minimum horizontal flue length (concentric) 0,4 metres
Maximum vertical flue length (concentric) 3,6 metres
Minimum vertical flue length (concentric) 1,0 metres
Maximum twin flue length (horizontal or vertical) 5m/5m + terminal
Fig. 3
Terminal position for fan assisted boiler
(minimum distance) mm
A - Directly above or below an open window 300
or other opening (e.g. air brick)
B - Below gutters, soil pipes or drain pipes 25
C - Below eaves 25
D - Below balconies or car port roof 25
E - From vertical drain pipes and soil pipes 75
F - From internal or external corners 25
G - Above ground or below balcony level 300
H - From a surface facing a terminal 600
I - From a terminal facing a terminal 1200
J - From an opening in the car port (e.g. door
window) into dwelling. 1200
K - Vertically from a terminal on the same wall 1500
L - Horizontally from a terminal on the same wall 300
M - Horizontally from a vertical terminal to a wall 300
N - Horizontally from an opening, airbrick,
openable window, etc. 300
NOTE: The flue must be terminated in a place not likely to cause a
nuisance.
N
New minimum distance

4
This appliance must be installed by a competent
personinaccordancewiththeGasSafety(Instal-
lation & Use) Regulations.
3.1 RELATED DOCUMENTS
The installation of this water heater must be in
accordancewiththerelevantrequirementsofthe
Gas Safety (Installation & Use) Regulations, the
Water supply (water fittings) Regulations, the
WaterByelawsScotland,theBuildingStandards
(Scotland) Regulation and Building Standards
(Northern Ireland) Regulations.
Itshouldbeinaccordancealsowithanyrelevant
requirementsofthelocalauthorityandtherelevant
recommendationsofthefollowingBritishStandard
Codes of Practice.
3.2 LOCATION OF APPLIANCE
The appliance may be installed in any room or
internal space, although particular attention is
drawn to the requirements of the current I.E.E.
wiringregulations,and in Scotland, the electrical
provisions of the Building Regulations, with
respect to the installation of the appliance in a
roomorinternalspacecontainingabathorshower.
When an appliance is installed in a room or
internal space containing a bath or shower, the
appliance or any control pertaining to it must not
be within reach of a person using the bath or
shower.
Thelocationchosenfortheappliancemustpermit
the provision of a safe and satisfactory flue and
termination. The location must also permit an
adequate air supply for combustion purposes
and an adequate space for servicing and air
circulation around the appliance. Where the
installation of the appliance will be in an unusual
location special procedures may be necessary,
BS 6798 gives detailed guidance on this aspect.
A compartment used to enclose the appliance
must be designed and constructed specifically
for this purpose. An existing compartment/cup-
board may be utilised provided that it is modified
to suit.
Details of essential features of compartment/
cupboard design, including airing cupboard in-
stallations, are given in BS 6798. This appliance
is not suitable for external installation.
3.3 GAS SUPPLY
The gas meter – as supplied by the gas supplier
–mustbecheckedtoensurethatitisofadequate
size to deal with the maximum rated input of all
the appliances that it serves. Installation pipes
must be fitted in accordance with BS 6891.
Pipe-work from the meter to the appliance must
be of adequate size. Pipes of a smaller size than
the appliance gas inlet connection must not be
used. The installation must be tested for sound-
ness in accordance with BS 6891.
Ifthegassupplyservesmorethanoneappliance,
it must be ensured that an adequate supply is
maintained to each appliance when they are in
use at the same time.
3.4 FLUE SYSTEM
Theterminalshouldbelocatedwherethedisper-
sal of combustion products is not impeded and
withdueregardforthedamageanddiscoloration
thatmayoccurtobuildingproductslocatednearby.
Theterminalmustnotbelocatedinaplacewhere
it is likely to cause a nuisance (see fig. 3).
In cold and/or humid weather, water vapour may
condense on leaving the terminal; the effect of
such pluming must be considered.
If installed less than 2m above a pavement or
platform to which people have access (including
balconies or flat roofs) the terminal must be
protected by a guard of durable material. The
guard must be fitted centrally over the terminal.
RefertoBS5440Part 1, when the terminal is 0,5
metres(orless)belowplasticguttering or1metre
(or less) below painted eaves.
3.5 AIR SUPPLY
The following notes are intended for general
guidance only.
This appliance is a room sealed, fan-flued water
heater, consequently it does not require a
permanent air vent for combustion air supply.
When installed in a cupboard or compartment,
ventilationforcoolingpurposesisalsonotrequired.
3.6 WATER PIPE WORK
Detailedrecommendationsare given inBS5449
Part 1 and BS 6798. The following notes are for
general guidance only.
3.6.1 PIPEWORK
ItisrecommendedthatcoppertubingtoBS2871
Part 1 is used in conjunction with soldered capil-
lary joints.
Where possible pipes should have a gradient to
ensureairiscarriednaturallytoanoutletandthat
water flows naturally to drain cocks.
SECTION 3 GENERAL REQUIREMENTS
BS 5440 PART 1 FLUES
BS 5440 PART 2 FLUES AND VENTILATION
BS 5546 INSTALLATION OF HOT WATER SUPPLIES FOR DOMESTIC PURPOSES
BS 6891 LOW PRESSURE INSTALLATION PIPES
BS 6700 DESIGN, INSTALLATION, TESTING AND MAINTAINENCE OF SERVICES SUPPLYING
WATER FOR DOMESTIC USE

5
Pipes should be insulated to avoid heat loss and
in particular to avoid the possibility of freezing.
Particularattentionshouldbepaidtopipespassing
throughventilatedareassuchasunderfloors,loft
space, and void areas.
3.6.2 DRAIN COCKS
Thesemust be located in accessiblepositions to
facilitate draining of the appliance and all water
pipes connected to the appliance. The drain
cocks must be manufactured in accordance with
BS 2879.
3.7 ELECTRICAL SUPPLY
The appliance is supplied for operation on 230V
@ 50Hz electrical supply; it must be protected
with a 3-amp fuse. The method of connection to
the mains electricity supply must allow for
completeisolationfromthesupply.Thepreferred
method is by using a double-pole switch with a
contact separation of at least 3mm. The switch
must only supply the appliance. Alternatively an
un-switched shuttered socket with a fused 3-pin
plugboth complying with BS 1363is acceptable.
Fig. 4
4.1 DELIVERY
The appliance is delivered in a heavy-duty card-
board carton. Lay the carton on the floor with the
writing the correct way up.
4.2 CONTENTS
Contained within the carton is:
●the appliance;
●the wall mounting bracket;
●template;
●an accessories pack containing the appliance
service valves and washers;
●the instruction pack containing the installation
&servicinginstructions,userinstructionsanda
3-amp fuse.
4.3 UNPACKING
At the top of the carton pull both sides open – do
notuseaknife–unfoldtherestofthecartonfrom
around the appliance, carefully remove all pro-
tectivepackagingfromtheappliance,andlaythe
accessories etc. to one side.
4.4 PREPARATION FOR MOUNTING THE
APPLIANCE
The appliance should be mounted on a smooth,
vertical, surface, which must be capable of
supporting the full weight of the appliance. Care
shouldbeexercisedwhendeterminingtheposition
of the appliance with respect to hidden
obstructions such as pipes, cables, etc.
When the position of the appliance has been
decided–usingthetemplatesupplied–carefully
mark the position of the wall-mounting bracket
(see fig. 5) and flue-hole (if applicable).
3.8 TIMBER FRAMED BUILDINGS
Iftheapplianceistobefittedinatimberframed
building, it should be fitted in accordance with
theInstituteofGasEngineerspublication(IGE/
UP/7) “Guide for Gas Installations in Timber
Frame Buildings”.
SECTION 4 INSTALLATION
Fig. 5
1= centre of rear flue hole using ONLY 0225705 or 0225710 flue
2= centre of rear flue hole for ALL OTHER FLUES
ø 125
ø 6
ø 6
Type 2
Type 1
320
45
86131
614,5
803
57,5
74 74

6
4.4.1 IMPORTANT
There are two holes on the template.
The lower hole should be used with the
telescopicfluekit(partn°0225705&0225710).
The upper hole is for use with all other
horizontal flue kits.
4.4.2 MAXIMUM FLUE LENGTHS
4.5 FITTING THE FLUE
The top flue outlet permits both horizontal and
vertical flue applications to be considered,
alternatively, the Vokera twin flue system can be
utilised if longer flue runs are required.
4.5.1 CONCENTRIC HORIZONTAL FLUE
(For concentric vertical flue, see 4.5.2).
(For twin flue applications, see 4.5.3).
The appliance flue outlet elbow can be rotated
through 360°on its vertical axis. In addition the
fluemaybeextendedfromtheoutletelbowinthe
horizontalplane(see4.4.2),howeveriftheflueis
to be extended or additional bends are to be
fitted, the standard horizontal flue kit (part n°
2359029) must be used. A reduction must also
bemadetothemaximumlength(seetable)when
additional bends are used.
Using the template provided, mark and drill a
115mmholeforthepassageofthefluepipe.The
hole should have a 1°drop from the boiler to
outside, to eliminate the possibility of rainwater
entering the appliance via the flue.
The fixing holes for the wall-mounting bracket
should now be drilled and plugged, an
appropriate type and quantity of fixing should be
used to ensure that the bracket is mounted
securely. Once the bracket has been secured to
the wall, mount the appliance onto the bracket.
Flue system
Concentric Horizontal
Concentric Vertical
Twin flue
AquaNova
2,4m
3,6m
5m/5m + terminal
Reduction for bends
Bend
45°bend
90°bend 0,5 metre 1,0 metre
Reductionin maximumflue length foreach bend
Horizontal flue terminals and accessories
PartNo. Description Min-Max length
0225705
0225710
2359029
2359069
2359079
2359049
2359059
0225760
Standard telescopic flue
Extended telescopic flue
Horizontal flue kit for use with
add. bends & extensions
750mm extension
1500mm extension
45°bend (pair)
90°bend
Wall bracket (5)
380mm-600mm
(dimension X)
600mm-920mm
(dimension X)
833mm
(dimension X)
750mm
1500mm
N/A
N/A
N/A
IMPORTANT
The flue restrictor ring must be inserted into the
appliance flue outlet if the total flue length is less
than 1.0m
FITTING THE TELESCOPIC FLUE KIT
(0225705 & 0225710)
Carefully measure the distance from the centre
of the appliance flue outlet to the face of the
outside wall (dimension X see fig. 6).Add 50mm
to dimension X to give the overall flue length
(dimensionY).Usingthecomplete telescopic flue
assembly adjust the length to suit dimension Y.
Once the telescopic flue terminal has been
adjusted to the correct length, secure the flue
assembly with the screw supplied.
Inserttheflueassembly into the previously drilled
flue hole and locate the flue bend over the
appliance flue outlet. Push the flue bend down
over the appliance flue outlet and ensure the
correct seal is made. Pull the flue assembly
towards and over the flue bend - using a twisting
action-ensuringthecorrectsealis made. Check
that the terminal protrudes past the finished
outside wall by the correct length (115mm).
NOTE
You must ensure that the entire flue system is
properly supported and connected.
Seal the flue assembly to the wall using cement
or a suitable alternative that will provide
satisfactory weatherproofing. The interior and
exterior trim can now be fitted.
FITTING THE STANDARD (2359029)
HORIZONTAL FLUE KIT (see 4.4.1)
Carefully measure the distance from the centre
of the appliance flue outlet to the face of the
outside wall (dimension X see fig. 7). Ensure the
inner (60mm) pipe is fully inserted into the outer
(100mm) pipe (when the inner pipe is fully
inserted, it stands proud of the outer pipe by
7,5mm). Add 32mm to dimension X to give the
overall flue length (dimension Y). The standard
horizontal flue kit (part no. 2359029) is suitable
for a distance (dimension Y) of up to 865mm.
NOTE
Dimension Y is measured from the end of the
terminal to the end of the outer (100mm) pipe.
The internal trim should be fitted to the flue pipe
before connection of the 90°bend.
115 mm
“X”
“Y”
Fig. 6 “X” + 50 mm = “Y”

7
If the horizontal flue kit (2359029) requires to be
cut to the correct size (dimension Y), you must
ensure that the inner (60mm) pipe stands proud
oftheouter(100mm)pipeby 7,5 mm (see fig. 8).
Ensure any burrs are filed or removed and that
any seals are located properly before assembly.
Hold the inner (60mm) pipe of the terminal
assembly and connect to the push-fit end of the
90°bend(supplied)usingatwistingaction.Insert
the assembled flue into the previously drilled
hole. Using the clips & screws supplied, connect
the flue assembly to the boiler, ensuring that the
terminal protrudes past the finished outside wall
by the correct length (135mm).
You must ensure that the entire flue system is
properly supported and connected.
Seal the flue assembly to the wall using cement
orasuitablealternativethatprovidessatisfactory
weatherproofing. The exterior trim can now be
fitted.
EXTENDING THE HORIZONTAL FLUE
If the horizontal flue requires extension/s or
additional bend/s, the horizontal flue terminal kit
(2359029) must be used. Connect the bend -
supplied with the terminal kit - to the top of the
water heater using the clips, screws, & gaskets
supplied.Theadditionalbends&extensionshave
an internal push-fit connection, care should be
taken to ensure that the correct seal is made
when assembling the flue system. Connect the
required number of flue extensions or bends (up
tothemaximumequivalentfluelength)totheflue
terminalusingtheclips,screws &gasketssupplied
(see fig. 7 & 8).
Fig. 7
Max. 833mm
Dimension “X”
135mm
Dimension “Y”
7,5
110
Fig. 8
Extension
Push-fit
connection
Boiler
7,5 mm
IMPORTANT
The flue restrictor ring must be removed or
discardedifthetotalfluelength-includingbends-
exceeds 1.0m.
NOTE
When cutting the horizontal flue terminal or an
extensiontotherequiredlength,youmustensure
that the excess is cut from the plain end of the
terminal or extension, and that the inner (60mm)
pipe is 7,5mm longer than outer (100mm) pipe
(seefig.7&8).Removeanyburrs,andcheckthat
any seals are located properly.
You must ensure that the entire flue system is
properly supported and connected.
Seal the flue assembly to the wall using cement
or a suitable alternative that will provide
satisfactory weatherproofing. The interior and
exterior trim can now be fitted.
4.5.2 CONCENTRIC VERTICAL FLUE
Theverticalflueterminalcanbeconnecteddirectly
to the appliance flue outlet.
Alternatively, an extension or bend can be
connected to the appliance flue outlet if desired
(see4.4.2),howeverifadditionalbendsarefitted,
a reduction must be made to the maximum flue
length (see table below).
Using the dimensions given in fig. 9 as a
reference, mark and cut a 105mm hole in the
ceiling and/or roof.
Fit the appropriate flashing plate to the roof
andinserttheverticalflue terminal through the
flashing plate from the outside, ensuring that
the collar on the flue terminal fits over the
flashing.
The fixing holes for the wall-mounting bracket
shouldnowbedrilledandplugged,anappropriate
type and quantity of fixing should be used to
ensure that the bracket is mounted securely.
Once the bracket has been secured to the wall,
mount the appliance onto the bracket.
Reductionin maximum fluelength foreachbend
Reduction for bends
Bend
45°bend 0,5 metre
90°bend 1,0 metre
Vertical flue terminal and accessories
Part No. Description Length
2359039
0225770
0225765
2359069
2359079
2359049
2359059
0225760
Vertical flue terminal
Pitched roof flashing plate
Flat roof flashing plate
750mm extension
1500mm extension
45°bend (pair)
90°bend
Wall bracket (5)
1000 mm
N/A
N/A
750mm
1500mm
N/A
N/A
N/A

8
Fig. 9 Twin flue accessories
Part No. Description Length
0225805
0225810
300
0225770
0225765
0225815
0225820
0225825
0225830
0225835
0225840
0225845
0225850
0225855
Horizontal flue terminal
Vertical flue terminal
Concentric to twin, adapter
Pitched roof flashing plate
Flat roof flashing plate
Condensate drain kit
0,25m extension (pair)
0,5m extension (pair)
1,0m extension (pair)
2,0m extension (pair)
45°bend (pair)
90°bend (pair)
Twin bracket (5)
Single bracket (5)
1000 mm
1000 mm
N/A
N/A
N/A
N/A
250mm
500mm
1000mm
2000mm
N/A
N/A
N/A
N/A
166mm
465mm
300mm minimum
The vertical flue terminal is 1.0 metre in length
andcannotbecut; thereforeitmaybenecessary
toadjust the heightoftheappliance tosuitoruse
a suitable extension.
Removeordiscardthefluerestrictorringfromthe
appliance flue outlet (see fig. 1), if the total flue
length-includingtheallowanceforanyadditional
bends - exceeds 1.0 metre.
Connect the vertical flue assembly to the water
heaterfluespigotusing the 60mm & 100mm clips,
gaskets & screws (supplied), ensuring the correct
seal is made. The flue support bracket (supplied
with the vertical flue kit) can now be fitted.
Iftheverticalfluerequiresextension/soradditional
bend/s, connect the required number of flue
extensions or bends (up to the maximum
equivalent flue length) between the water heater
and vertical flue assembly (see fig. 8).
NOTE
Whencuttinganextensiontotherequiredlength,
you must ensure that the excess is cut from the
plain end of the extension and that the inner
(60mm)pipeis7,5mmlongerthanouter(100mm)
pipe (see fig. 8). Remove any burrs, and check
that any seals are located properly.
You must ensure that the entire flue system is
properly supported and connected.
4.5.3 TWIN FLUE SYSTEM
TheVokera twin flue system enables greater flue
distances to be achieved (see 4.4.2) than that of
the standard concentric flue system.
It can be used for horizontal or vertical
applications, however the twin flue system must
be converted to the dedicated concentric flue kit
fortermination.
It is essential that the installation of the twin flue
system be carried out in strict accordance with
these instructions.
GUIDANCE NOTES ON TWIN FLUE
INSTALLATION
●The flue must have a fall back of 1°back to the
appliancetoallowanycondensatethatmayform
in the flue system to drain via the condensate
drain. Consideration must also be given to the
factthat thereisthepossibilityofasmallamount
of condensate dripping from the terminal.
●Ensurethatthe entire fluesystemisadequately
supported, use at least one bracket for each
extension.
●The entire flue system must be adequately
insulatedto maintainheatwithinthe fluesystem
thereby reducing the possibility of condensate
production.
●As the exhaust outlet pipe can reach very high
temperatures it must be protected to prevent
persons touching the hot surface.
●Thecondensatedrain pipe must be connected
in accordance with building regulations.
MOUNTING THE WATER HEATER
The fixing holes for the wall-mounting bracket
should now be drilled and plugged, an
appropriate type and quantity of fixing should be
used to ensure that the bracket is mounted
securely. Once the bracket has been secured to
the wall, mount the appliance onto the bracket.
4.5.3.1 INSTALLATION OF CONCENTRIC TO TWIN
ADAPTOR KIT (see fig. 10)
●Remove the flue restrictor ring from the
appliance flue outlet (if fitted).
●Using the two holes in the concentric section
of the adaptor as a guide, drill two - 3mm -
corresponding holes on the appliance flue
outlet.
●Fit the adaptor to the appliance flue outlet and
secure it using the screws provided.
Reductionin maximum fluelength foreachbend
Reduction for bends
Bend
45°bend
90°bend 1,0 metre
1,0 metre