geminox FCX 22 C Owner's manual

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FCX Logo_BS Tanks Feb-11.ai 1 2/4/2011 9:00:53 AM
FCX 22
FCX 30
T30.42435.00
USA/CA

- 2 -
TABLE OF CONTENTS
I-SAFETY PRECAUTIONS ...................................................................................................................... 4
1-SYMBOLS.............................................................................................................................................. 4
2-SAFETY PRECAUTIONS...................................................................................................................... 4
2.1 - Smell of flue gas ........................................................................................................................ 4
2.2 - Explosive or inflammable materials ........................................................................................... 4
2.3 - Fitting, commissioning ............................................................................................................... 4
2.4 - Servicing .................................................................................................................................... 4
2.5 - Combustion air/Ambient air ....................................................................................................... 4
2.6 - Danger due to failing to consider your own safety in an emergency such as a fire ................... 5
2.7 - User information from the installer ............................................................................................. 5
II - PRESENTATION ................................................................................................................................... 6
1-DESCRIPTION ...................................................................................................................................... 6
2-RANGE.................................................................................................................................................. 6
III - TECHNICAL SPECIFICATIONS ........................................................................................................... 7
1-CHARACTERISTICS............................................................................................................................. 7
2-DIAMETERS OF PIPE CONNECTIONS............................................................................................... 8
3-DIMENSIONS........................................................................................................................................ 9
4-DESIGNATION OF COMPONENTS ................................................................................................... 10
5-CIRCULATING PUMP CHARACTERISTICS...................................................................................... 11
6-MIXING VALVE CHARACTERISTICS................................................................................................. 11
7-CHARACTERISTICS OF THE EXPANSION VESSEL........................................................................ 11
IV - OPERATION ........................................................................................................................................ 12
1-DESCRIPTION .................................................................................................................................... 12
V-INSTALLATION ................................................................................................................................... 13
1-GENERAL............................................................................................................................................ 13
1.1 - Notes on installation and operation ......................................................................................... 13
2-VENTILATION ..................................................................................................................................... 13
2.1 - Type conventional flue outlet ................................................................................................... 13
2.2 - Balanced flue outlet ................................................................................................................. 13
3-OPENING THE UNIT........................................................................................................................... 14
4-ASSEMBLING OF THE BURNER....................................................................................................... 14
5-COMBUSTION PRODUCT FLUEING................................................................................................. 15
5.1 - Boiler placement according to the combustion products outlet system 
and to the hydraulic connection ............................................................................................... 15
5.2 - Evacuation by chimney flue .....................................................................................................16
5.3 - Balanced flue outlet ................................................................................................................. 19
6-CONDENSATE DRAINAGE................................................................................................................ 24
7-ASSEMBLY OF ACCESSORIES DELIVERED WITH THE BOILER................................................... 25
7.1 - Bleed + bend ........................................................................................................................... 25
7.2 - 1" - Ø 22 bends + seal ............................................................................................................. 25
8-HYDRAULIC CONNECTION............................................................................................................... 25
8.1 - Recommendations ................................................................................................................... 25
8.2 - Accessories to connect, install or adjust .................................................................................. 26
8.3 - Various typical water circuits are illustrated below .................................................................. 27
9-OIL CONNECTION.............................................................................................................................. 28

- 3 -
TABLE OF CONTENTS
10 - ELECTRICAL CONNECTIONS........................................................................................................... 28
10.1 - Wiring and connection diagram ............................................................................................... 30
VI - COMMISSIONING ............................................................................................................................... 31
1-FILLING THE SYSTEM WITH WATER............................................................................................... 31
2-OIL INLET............................................................................................................................................ 31
3-PRE-COMMISSIONING CHECK......................................................................................................... 31
4-USER INFORMATION......................................................................................................................... 31
5-COMMISSIONING............................................................................................................................... 32
5.1 - Commissioning procedure - without regulator ......................................................................... 32
5.2 - Commissioning procedure - with regulator .............................................................................. 33
5.3 - Commissioning the oil burner .................................................................................................. 34
6-CHECKING THE SAFETY DEVICES.................................................................................................. 34
VII - MAINTENANCE .................................................................................................................................. 35
1-CLEANING THE BOILER SHELL........................................................................................................ 35
2-CLEANING THE CONDENSOR.......................................................................................................... 36
3-BURNER MAINTENANCE................................................................................................................... 37
4-CHECKING ACCESSORIES............................................................................................................... 37
5-EXPANSION VESSEL PRE-INFLATION PRESSURE CHECK.......................................................... 37
6-COMBUSTION PRODUCT FLUES..................................................................................................... 37
7-OIL FILTER.......................................................................................................................................... 38
8-CHANGING A THERMOSTAT OR A THERMOMETER ..................................................................... 38
8.1 - Bulbs positioned in the boiler shell pocket ............................................................................... 38
8.2 - Bulb positioned on the heating output tube ............................................................................. 38
8.3 - Bulb positioned in the pocket of the condensor ....................................................................... 38
8.4 - Changing thermostats or thermometer .................................................................................... 38
8.5 - Bulbs in the boiler shell ............................................................................................................ 38
9-DRAINING ........................................................................................................................................... 39
VIII - OPERATING FAULTS ........................................................................................................................ 40
1-BURNER SHUTDOWN........................................................................................................................ 40
2-SHUTDOWN BY OVERHEATING THERMOSTAT CUT-OUT............................................................ 40
2.1 - Water overheating safety thermostat ....................................................................................... 40
2.2 - Combustion product overheating safety thermostat ................................................................ 40
IX - PARTS LIST ........................................................................................................................................ 41

- 4 -
I - SAFETY PRECAUTIONS
1- SYMBOLS
In this document:
Safety recommendations, warnings
and recommendations are by a warning-
triangle symbol accompanied by bold text.
2 - SAFETY PRECAUTIONS
- Switch off the appliance.
- Open doors and windows.
- Immediately contact your installer or your after-
sales service.
- Do not store or use any inflammables materials
(paper, thinners, paints, etc.) within vicinity of the
appliance.
- Respect the minimum distances regard to inflam-
mable materials and fire-proof materials (16 in-
ches (40.6 cm) from the appliance).
- The installation, electrical connection and the first
start-up must be carried out by a qualified profes-
sional and authorised in accordance with the ap-
plicable regulations and rules of good practice.
Respect the electrical connection plan.
- Danger from electrical shock :
• Before installation: make sure the appliance is
turned-off at all points. Secure against involun-
tary re-triggering.
- The appliance must not operate without water.
- Carry out the checks listed in Section 3 - page 31
- chapter VI - COMMISSIONING before the first
start-up of the system.
- Only use approved fuels indicated on the data
plate.
- Flue system (air inlets, conduits, gaskets etc.)
must not be modified in any way and not da-
maged.
- Connect only one boiler to each venting system
or chimney flue.
- The venting system piping must not feed into
another air extraction duct.
- Do not route the venting system piping through or
inside another duct used for exhaust air or other
flue gases.
- Chimney type system B23/B23p:
• Ventilation openings in doors, windows and
walls must not be sealed or restricted.
Intoxication Risk: An insufficient air intake
can cause the evacuation of dangerous
smokes.
• Ensure that no mechanical air-extraction
equipment draws air from the boiler room, e.g.
kitchen vent hood, clothes dryer, central va-
cuum system, etc.
• If draught-proof windows are installed, mea-
sures must be taken to ensure there is an ade-
quate supply of air to the appliance for
combustion.
- Flue type system (C13/C33):
• The flue type system (sealed) can be installed
in premises with or without a window or venti-
lation.
• Room sealed installation in a small room or
cupboard, make sure required clearances for
service are fulfilled.
- Recommendations for the user:
• take out an inspection/maintenance contract
with an competent and qualified engineer.
• have the appliance serviced at regular inter-
vals (annually).
- Respect the safety recommendations of
chapter VII - MAINTENANCE - page 35.
- Only use original spare parts.
- To avoid any corrosion, the combustion/ambient
air must be free of corrosive substances (e.g.
halogenated hydrocarbons containing chlorines
or fluorines compounds).
- Do not install the appliance in a polluted atmos-
phere.
!
2.1 - Smell of flue gas
2.2 - Explosive or inflammable materials
2.3 - Fitting, commissioning
2.4 - Servicing
2.5 - Combustion air/Ambient air

- 5 -
SAFETY PRECAUTIONS
- Never put yourself at risk of fatal injury. Your own
safety must always take the highest priority.
- Inform the user on the operating modes of the ap-
pliance and show him how to use the controls.
- Inform the user that he must never undertake any
modifications or repairs of the appliance.
- Inform the user of the various possible operating
faults and dangers.
- Give the user instructions to the user.
- This appliance must only be operated by a res-
ponsible adult who has been instructed in, un-
derstands, and is aware of the appliance's
operating conditions and effects.
- Children should be supervised to ensure they do
not play with the appliance.
2.6 - Danger due to failing to consider your
own safety in an emergency such as a
fire
2.7 - User information from the installer

- 6 -
II - PRESENTATION
1- DESCRIPTION
Standardised description: type C sealed circuit
combustion boiler, heating only, 22.3 kW
(76000 Btu/hr) or 30,5 kW (104000 Btu/hr).
Model FCX is approved for installation with zero
clearance to combustible materials by Intertek Tes-
ting Services to the UL Standard for Oil Fired Sto-
rage Tank Water Heaters (UL 732).
The FCX boiler is delivered pre-assembled (cover,
boiler shell and control panel). It includes the fol-
lowing equipment:
- an enamelled steel cover,
- a thick steel boiler shell comprising:
• a combustion chamber and a heat exchanger
with a system of removable baffles,
- a stainless steel condenser (904 L),
- a control panel comprising:
• an On/Off switch,
• a Summer/Winter switch,
• a thermostat controlling boiler temperature,
• a heating flow temperature thermometer (cir-
cuit 1),
• a water overheating safety thermostat,
• a combustion product overheating safety ther-
mostat,
• a boiler shut-down light,
• pre-wiring for electronic regulation.
- an oil burner (supplied separately),
- an air inlet duct to the burner,
- a circulating pump,
- a manual mixing valve (can be motorised),
- a 30 Psi safety valve,
- an expansion vessel,
- a drain cock,
- a siphon,
- welds for the connection of two independent hea-
ting circuits,
- an automatic bleed,
- a reduced bend used to assemble the 3/8" air
bleed,
- 4 1" - Ø 22 bends used for easier outlet/return
connection to the system,
- thick insulation,
- a socket.
2 - RANGE
Models Function Combustion product
connection
FCX 22 C
FCX 30 C Heating only Flue with tubing ((B23/B23p))
Horizontal balanced flue (C13)
Vertical balanced flue (C33)

- 7 -
III - TECHNICAL SPECIFICATIONS
1 - CHARACTERISTICS
Model
FCX 22 C FCX 30 C
Certification following efficiency directive 92/42/CEE CE1312AS036R
Connection B23/C13/C33
Power output maxi kW
Btu/h 22,3 76000 30,5 104000
Heat flow maxi kW
Btu/h 23,8 81250 31,5 107500
Efficiency (in B23)* 60/80 °C
140/176 °F %96,3 96,7
Part load efficiency (30 %) (B23)* %99,0 99,8
Combustion product temperature (B23)maxi °C
°F 105 221 95,5 204
Flow rate of combustion products (0 °C, 1013 mbar) g/s
Lb/s 11 0.02 15 0.03
Permitted back pressure maxi Pa
Inches H2O 30 0.12 30 0.12
Air flow required for combustion (0°C, 1013 mbar) m3/h
ft3/h 29,1
1027.5 39,4 1391.5
Combustion chamber length mm
inches 228 8.98 239 9.41
ØCombustion chamber mm
inches 294 11.57 350 13.78
Combustion chamber volume dm3
Cu. Inches 15 915 23 1403.5
Volume of combustion products circuit dm3
Cu. Inches 50 3051 52,5 3203,5
P flue Pa
Inches H2O 25 0.10
Heating service pressure maxi bar
Psi 3 43.5
Heating circuit water temperature mini/maxi °C
°F 50/70 122/158
Boiler temperature maxi °C
°F 80 176
Water overheating safety thermostat °C
°F 110 230
Flue overheating safety thermostat °C
°F 110 230
Boiler water capacity litre
gallon 16 4.23 25 6.6
Primary water flow 60/80 °C
140/176 °F m3/h
gal/h 0,96 254 1,3 343
P water (at nominal flow) mCE 1,0 1,8
Heatlosses T 30 K
T 50 K W / HP
W / HP 137 / 0.18 260 / 0.35 144 / 0.19 273 / 0.37
Service consumption coefficient (T 50 K) % 1,3
Total capacity of expansion vessel litre
gallon 8 2.1 12 3.2

- 8 -
TECHNICAL SPECIFICATIONS
* A 3m (9.8 ft) horizontal or vertical concentric flue connection increases in efficiency by about 2 %.
2 - DIAMETERS OF PIPE CONNECTIONS
* Note:
- The F3/4"-F3/8" reduced bend supplied with the
boiler makes it possible to assemble the 3/8"
bleed supplied (refer to section 7 - page 25 -
chapter V - INSTALLATION).
Useful capacity (for static height of 5m (197 inch)) litre
gallon 5 1.3 7,5 2
Power consumption (Continuous working with heating circulating
pump at maximum speed) W HP 235 0.32 235 0.32
Power consumption with heating circulating pump
Speed 1
Speed 2
Speed 3
W/HP
W/HP
W/HP
45/0.06
65/0.09
85/0.11
Power absorbed (with burner, without circulator) W
HP 150 0.2 150 0.2
Power supply / Protection index 120 V - 60 Hz / IP x 0D
Class of electrical insulation 1
Absorbed intensity maxi A 1,9 1,9
Weight without packaging kg
Lb 132,4 292 157,3 347
Weight with packaging kg
Lb 146 322 167,5 369
Model FCX
ØCombustion products mm
inch 80/125
3.15/4.92
ØHeating flow/return Inch 1
ØDomestic hot water production system or 2nd
heating circuit connection Inch 1
ØCondensate drain mm
Inch 40 1-1/2
Ø Heating water drain Inch 1/2
ØAir bleed Inch 3/4
Model
FCX 22 C FCX 30 C

- 9 -
TECHNICAL SPECIFICATIONS
3 - DIMENSIONS
Note:
- Be sure to leave a sufficient gap behind the boiler
for access to the combustion product evacuation
trap.
10.12
1
8
3
4
.
0
3
4
.
4
8.26 5.55
2.20
2.20
3.46
34.4
27.523.7
39.1
F
C
X
-
0
1
-
U
8.8
7.98
4.37
3
1
.
5
m
i
n
i
Fig. 1
Front view Side view Rear view

- 10 -
TECHNICAL SPECIFICATIONS
4 - DESIGNATION OF COMPONENTS
10
13
9
31
19
24
23
15
12
34
10 35
61
18
28
22
26 33
27
27
8
29
25
11
21
16
FCX-02-U
Fig. 2
Front view Rear view
1) Control panel
2) 1st circuit heating flow
3) 1st circuit heating return
4) 2nd circuit heating flow / Primary flow - (outlet of the
boiler to the domestic hot water preparation) (optional)
5) 2nd circuitheatingreturn/ Primaryreturn- (return from
domestic hot water preparation to the boiler) (optional)
6) Plastic cover
7) Drain cock
8) Oil supply
9) Terminal box protection plate
10)Condenser
11)Oil burner (supplied separately)
12)Sight glass
13)Boiler shell
14)/
15)Combustion test point
16)Siphon
17)Combustion product outlet
18)Heating circulating pump
19)Safety valve
20)Weld for air bleed connection (bend + air bleed delive-
red with the boiler)
21) Air inlet duct to the burner
22)Expansion vessel

[8 L (2.1 gal) = FCX 22 / 12 L (3.2 gal) = FCX 30]
23)Manual mixing valve
24) Safety valve outlet
25)Pocket for boiler temperature control thermostat bulb
26)Water overheating safety thermostat
27)Opening for passage of handling bars
28)Temperature thermometer bulb, heating outlet 1st cir-
cuit
29)Burner safety reset button
30)Condensate drain
31)Opening for passage of 230 V cables
32)Opening for passage of sensor cables
33)Combustion product overheating safety thermostat
34)Pocket for combustion product overheating safety
thermostat bulb
35)Pocket for water overheating safety thermostat bulb
36)Hole for oil hose raceway and outlet of the safety valve
37)Burner electrical supply

- 11 -
TECHNICAL SPECIFICATIONS
5 - CIRCULATING PUMP CHARACTERISTICS
The circulating pump is equipped with a 3-speed
motor with a 85 W (0.11 HP) maximum power input. The heating pump’s power consumption can be si- gnificantly optimised by adapting its speed to the re-
quirements of the installation and by using the
control devices that are offered as options
6 - MIXING VALVE CHARACTERISTICS
7 - CHARACTERISTICS OF THE EXPANSION VESSEL
FCX boilers are pre-equipped with an expansion
vessel for an installation water capacity of approxi-
mately 62 liters (16 gal) .(section 8.2 - page 26 -
chapter V - INSTALLATION)
The expansion vessel absorbs the increase in the
water volume in the installation produced by the in-
crease in temperature. The pre-inflation of the ves-
sel sends the internal membrane to the side of the
connection and the water dilation pushes on this
membrane. Optimum efficiency is obtained when
the inflation pressure is equal to the water pressure.
Note:
- The minimum water pressure necessary for the
correct working of the installation is defined by
the difference in levels between the boiler and the
highest point in the installation [ex : 8 m = 0,8 bar
(26ft=11.6 Psi)].
Fig. 3
00
5
10
15
20
25
30
35
Total Head in Feet
Capacity in U.S. GPM
2
12
3
468101520253035404550
HP range
1/25, 1/12, 1/6
230°F Maximum
50°F Minimum
10-46 GPM
Fluid temp
Flow Range
FCX-65-U
1
10
100
1000
10000
100 1000 10000
Flow (l/h)
Pressure drop (mbar)
100%
90%
80%
70%
60%
50%
40%
30%
10%
20%
135710
Setting button position
% Hot water
Fig. 4
H
Water inlet
Dilated water
volume
Inflating
valve
Pressure rises
as the air is
compressed
Max vessel
volume
Membrane
AM4-06-3
Fig. 5

- 12 -
IV - OPERATION
1- DESCRIPTION
The FCX boiler is a sealed exhaust circuit conden-
sation boiler.
Air is sucked in by the burner’s fan from outside the
appliance through the hose connected to the air in-
let and combustion product evacuation concentric
tube.
The boiler shell equipped with a system of remo-
vablebaffles,is linked to a stainless steel condenser
located directly on the heating return.
This unit is extremely efficient (thanks to condensa-
tion) and produces a very low level of sound.
Two independent heating circuits can be connected
to the appliance:
-the1
st circuit (radiators): passes through a three
way mixing valve incorporated into the boiler.
This valve can either be driven by a regulator (op-
tion) or driven manually (factory setting),
-the2
nd circuit can supply an under floor heating
circuit (VM2 mixing valve to be used in this case),
a hot water production system or both section 8.3
- page 27 - chapter V - INSTALLATION).

- 13 -
V - INSTALLATION
1 - GENERAL
DANGER: Risk of fatal injury from toxic
flue gases!
Never connect more than one boiler to
a flue system – regardless of whether
the flue is vertical or horizontal.
Common venting systems can cause
damage to property and personal inju-
ry.
Do not route the flue system through
another flue system that is in use, e.g. a
masonry chimney connected to a wood
stove.
Follow the instructions of the flue pipe
manufacturer.
The boiler must be installed by a trained and certi-
fied installer in accordance with all requirements of
NFPA-31, "Installation of Oil-Burning Equipment".
Installation must comply with all local and national
codes applicable to the installation of oil-fired
condensing boilers.
In Canada, the requirements of CSA/CGAB139 Ins-
tallation Code apply.
When installing and operating the heating system
observe the following:
- The local building codes regarding the installation
- The local building codes regarding combustion
air supply and venting systems, and the chimney
connection
- Regulations governing power connection to the
power supply
- The regulations and standards relating to the sa-
fety systems for the water heating system
Other important information:
- Only operate the boiler with the combined com-
bustion air/flue venting system specifically desig-
ned and approved for it.
- Follow the local code when connecting the
condensate outlet to the public sewer system.
2- VENTILATION
- All combustion appliances consume a quantity of
air proportional to their power.
• A ventilation space of at least 100 cm² (0.11 ft²)
must be provided at least 1.8 m (5.9 ft) above
the ground, as well as an air input, below, of
100 cm² (0.11 ft²).
- To avoid corrosion, the combustion air must not
contain any harmful agents. Halogenated hydro-
carbons, containing combinations of chlorine or
fluorine that are found in solvents, paints, glues,
propellants, household cleaning products, etc.
are considered to greatly encourage corrosion.
When the FCX boiler is installed with the horizontal
or vertical balanced flue kits provided as an option,
the combusion circuit is sealed tight in relation to the
local installation.
The boiler does not require any special ventilation,
but when the room is very small, you must take eve-
ry measure to ensure that the ambient temperature
of the installation premises does not exceed 45°C
(113°F) (ventilation).
The installation premises may require
ventilation to be fitted according to its
features or use.
!
1.1 - Notes on installation and operation
2.1 - Type conventional flue outlet 2.2 - Balanced flue outlet
!

- 14 -
INSTALLATION
3 - OPENING THE UNIT
To open Model FCX to access for installation, and/
or service, follow these steps :
- Remove the control panel escutcheon molding
(6) by grasping it on both sides and pulling it ou-
tward towards you and up. The escutcheon will
come free of the attachment clips leaving the
control panel exposed.
- Remove the top cover of the unit (A) by lifting the
cover at the front and rear to free the attachment
clips, and then simply lift the cover straight up and
off.
- Remove the front panel attachment screws (P),
then pull the front panel (J) outward towards you
at the top to free it from the attachment clips. Lift
the panel up to free it from the lower attachment
pins, and simply lift the panel off.
4 - ASSEMBLING OF THE BURNER
- Remove the front panel attachment screws (P,
fig. 6), then pull the front panel (J, fig. 6) outward
towards you at the top to free it from the attach-
ment clips. Lift the panel up to free it from the
lower attachment pins, and simply lift the panel
off.
- Make the assembly of the burner on the boiler -
refer to the burner’s technical instructions.
- After the assembly of the burner :
• connect the air inlet pipe (21, fig. 7) to the bur-
ner (11, fig. 7) and fix it with the fastening
collar (1, fig. 7) supplied to avoid any risks
of disconnection (A disconnection of the
burner air inlet pipe could generate a dys-
function of the burner),
• carry out the power supply connection to the
burner with the connector (37, fig. 7) located in
the boiler
- remount the front panel (J, fig. 4) with the 2
screws (P, fig. 4), after starting-up the boiler and
after checking the combustion settings
6
A
P
J
FCX-05-U
Fig. 6
8
11
21
21
FCX-81-U
Fig. 7

- 15 -
INSTALLATION
5 - COMBUSTION PRODUCT FLUEING
The installer or client must ensure that
the flue system chosen complies with
local installation regulations.
For the installation of the combustion
product evacuation system, accesso-
ries or an authorized combustion prod-
uct system must be used and adapt to
the oil fired condensing boiler with a
sealed combustion system.
Whatever the type of connection :
To prevent any accidental leakage:
• Check that the air inlet and combus-
tion product extraction outlet tube
and bend joints are properly sealed
after mounting.
• ensure that tight sealing joints are
used.
• use the fastening collars or flanged
components to attach the piping se-
curely to the wall with a least 1 collar
per female adapter of each section of
piping.
• exclude imperatively any use of oil or
grease.
To make assembly easier, apply liquid
soap over 5 cm (0.03 ft)of the section of
the tube to be fitted.
The tubing connections are arranged so
that no condensate is retained and to
ensure that they are transferred up to
evacuation (descending slop of 3%
between the base of the flue and the boi-
ler).
.
When the boiler must be placed as close as possible
to the rear wall, several configurations can be envi-
saged depending on the hydraulic connection - refer
to some examples below.
5.1.1 - Installation example
!
!
!
5.1 - Boiler placement according to the
combustion products outlet system
and to the hydraulic connection

- 16 -
INSTALLATION
An existing chimney flue can be used
provided that it is cleaned before the lin-
ing is fitted.
5.2.1 - Standard natural draft configuration
(flue operating at negative pressure)
Definition: Lining of an existing chimney flue by a
sealed STAINLESS STEEL corrugated flue of
Ø 125 (4.92 inch).
- The termination is specific to this configuration
and the outlet must be above the roof (comply
with the local intructions régulations),
- Do not use the hose for a horizontal assem-
bly: condensate may be retained.
- Use the authorized accessories for the stainless
steel conduit connection to the boiler,
- Fit a siphon (5) with a minimum 80 mm
(3.15 inch) seal between the bleed T-bracket and
the waste water pipe,
- Ventilation for the flue (8) and the heating sys-
tem (section 2 - chapter V - INSTALLATION)
must be provided.
- If the boiler is installed in premises that have me-
chanical air extraction, ensure that this does not
cause negative pressure.
- The premises must never be fitted with other ap-
pliances using natural draft to operate.
- The air is sucked in by the burner directly from the
room in which the boiler is fitted.
- The burner air-inlet is equipped with a flap door
valve that reduces losses caused by the accu-
mulation of soot.
5.2.1.1 - Installation example (B23)
Accessories :
1) PPtl off-centre reduction  80/110(3.15/4.33 inch),
2) /
3) PPtl tube
 110 (4.33 inch) L = 1 m (3.28 ft) 
(cut to the length required),
4) Bleed T-bracket
 110 (4.33 inch),
5) Siphon,
6) STAINLESS STEEL corrugated flue of grade 904 L
 125 (4.92 inch),
7) Termination (above the roof) ,
8) Lining ventilation
9) Bleed T-bracket support
10)Adaptator
 110/125 (4.33/4.92 inch),
- Each 45° elbow added reduces the total length al-
lowed by 0.5 m (1.6 ft).
5.2 - Evacuation by chimney flue
!
L1max 20 m (65.6 ft)
9
6
4
13
8
FCX-10-0
L1
L2 = 1 m
maxi
0
,
4
m
5
7
10
Fig. 8

- 17 -
INSTALLATION
5.2.2 - Configuration with pressurized lining
(B23p)
Definition : Lining of an existing chimney flue by a
corrugated PP flue conduit of 110 (4.33 inch) ac-
cording to the height.
- The termination must have its outlet above the
roof (comply with the local intructions régula-
tions),
- Do not use the hose for a horizontal assem-
bly: condensate may be retained.
- Fit a siphon (5) with a minimum 80 mm
(3.15 inch) seal between the bleed T-bracket and
the waste water pipe,
- The bleed T-bracket at the foot of the flue is op-
tional when the vertical flue is short (L1 < 5 m),
- Ventilation for the flue (rep. 8) and the heating
system (section 2 - chapter V - INSTALLA-
TION) must be provided.
- If the boiler is installed in premises that have me-
chanical air extraction, ensure that this does not
cause negative pressure.
- The premises must never be fitted with other ap-
pliances using natural draft to operate.
- The air is sucked in by the burner directly from the
room in which the boiler is fitted.
- The burner air-inlet is equipped with a flap door
valve that reduces losses caused by the accu-
mulation of soot.
5.2.2.1 - Installation example
Accessories :
1) PPtl off-centre reduction  80/110 (3.15/4.33 inch),
2) /
3) PPtl tube
 110 (4.33 inch) L = 1 m (3.28 ft) 
(cut to the length required),
4) Bleed T-bracket
 110 (4.33 inch)
5) Siphon,
6) PP corrugated flue
 110 (4.33 inch),
7) Termination (above the roof)
8) Lining ventilation
9) Bleed T-bracket support
10)Chimney spacers
Note:
- Calculation of the diameters for the conduits to be
made according to the local instructions regula-
tions.
- Each 45° elbow added reduces the total length al-
lowed by 0.5 m.
Models
Maximum permitted length L1 with
bleed T-bracket with horizontal
connection 1 m (3.28 ft) at conduit
diameter
Conduit 110 (4.33 inch)
FCX 22 C 20 m (66 inch)
FCX 30 C 15 m (49 inch)
6
4
13
8
L1
0
,
4
m
7
FCX-52-0
L2 = 1 m
maxi
9
5
10
Fig. 9

- 18 -
INSTALLATION
5.2.3 - Sealed configuration by chimney flue
Definition: Lining of an existing chimney flue,
sealed with respect to the installation room by a PP
corrugated flue of Ø 80 (3.15 inch) or 110
(4.33 inch) (in this case the air inlet is obtained by
the chimney flue around the combustion product
outlet) - (no ventilation constraints for the boiler).
- The roof termination specific to this configuration
can have an outlet below the roof,
- Do not use the hose for a horizontal assem-
bly: condensate may be retained.
- Fit a siphon (5) with a minimum 80 mm
(3.15 inch) seal between the bleed T-bracket and
the waste water pipe,
- The bleed T-bracket at the foot of the flue is op-
tional when the vertical flue is short,
- The air is sucked in by the burner from outside the
room through the concentric terminal.
- Refer to the CSTB technical notice for install-
ing flues.
5.2.3.1 - Installation example
Accessories :
3) PPtl tube  80 (3.15 inch) L = 1 m (3.28 ft) (cut to the
length required),
3) PVCtube
 125 (4.92 inch)L = 1 m (3.28 ft) (cut to the
length required),
or 1+3 = concentric extension
 80/125 (3.15/4.92 inch)
4) Bleed T-bracket (PPtl
 80 (3.15 inch) for FCX 22) - 
(PPtl  110(4.33inch)withatinput,anoffsetreducing
coupling of  80/110 (3.15/4.33 inch) for the FCX 30)
(preferred option), or Ø 80 (3.15 inch)or  110 with a
90° elbow,
5) Siphon,
6) PP corrugated flue (
 80 (3.15 inch)for FCX 22) - 
(  110 (4.33 inch) for FCX 30)
7) Termination (outlet possible below the roof)
9) Bleed T-bracket support
10)Chimney spacers
- T-bracket added reduces the total length allowed
by 1 m (3.28 ft).
Maximum length allowed: :
Lmax L1 + L2 + 1 m (3.28ft) 9 m (29.5 ft)
6
13
FCX-74-0
L1
4
7
L2 = 1 m
maxi
9
5
10
Fig. 10

- 19 -
INSTALLATION
5.3.1 - Installation regulations for balanced flues - Comply with the National and Local Standards
5.3 - Balanced flue outlet
C
asemen
t
A
ir intake
D
ormer
D
ormer
P
enetration on a gable end
w
ith casement
P
enetration on a blind
g
able end
Verge
C
asemen
t
Casement
Casement
A
ir intake
I
nternal angle
walls
Facing
F
orbidden areas
A
reas authorised on written
r
ecommendations of the
a
rchitect in agreement with
t
he owner.
A
uthorized areas
W
ith deflector
W
ithout deflecto
r
T
erminal installation rules for sealed fuel boilers
(
power under 70 kW)
W
ithout casemen
t
With casement
Fig. 11
1m=3.28ft

- 20 -
INSTALLATION
Drainage by balanced flue offers the advantage of
making the boiler airtight in relation to the ventilation
conditions in the premises on which it is installed.
Drainage is possible through the wall next to the boi-
ler or through the roof.
5.3.2 - Horizontal balanced flue
Recommendations
It is possible to install the boiler with a
balanced flue outlet when the wall next
to the boiler is an outside wall opening
on to a well-ventilated area.
Ensure that the level of sound produced
by the boiler, around the balanced flue
terminal, will not be a nuisance.
Do not place the flue terminal:
- at less than 2 m (6.6 ft) from a ventila-
tion hole or an opening,
- in front of the building or in a pas-
sageway (risk of obstruction, smell of
combustion products, varying
amounts of steam depending on the
weather conditions).
- at less than 2 m (6.6 ft) from the
ground or in an area that can be ac-
cessed by a young child (risk of obs-
truction - not supllied).
Note:
- It is possible to raise the terminal using the flue
with elbow option.
- Each 45° elbow added reduces the total autho-
rized length by 0.5 m (1.6 ft) .
- Each 90° angle added reduces the total autho-
rized length by 1 m (3.28 ft).
5.3.2.1 - Installation examples
5.3.2.1.1 - Straight balanced flue
Accessory:
- 1 straight horizontal balanced flue kit - l = 0,95 m
(3.12 ft).
5.3.2.1.2 - Angled balanced flue with hose
Accessory:
- 1 angled horizontal balanced flue kit - l = 3 m
(9.8 ft).
Maximumlinearlengthof thehorizontalflue :
Lmax = 5 m (16.4 ft)
!
2 m
minimum
0,77 m
FCX-16-0
130
Fig. 12
2 m
minimum
FCX-17-0
130
Fig. 13