geminox FCX 22 C Owner's manual

T
E
C
H
N
I
C
A
L
I
N
S
T
R
U
C
T
I
O
N
S
High fidelity heat
FCX 22 C
FCX 30 C
T30.38491.02

- 2 -
CONTENT
I-PRESENTATION ................................................................................................................................... 4
1-DESCRIPTION ...................................................................................................................................... 4
2-RANGE.................................................................................................................................................. 4
II - TECHNICAL SPECIFICATIONS ........................................................................................................... 5
1-CHARACTERISTICS............................................................................................................................. 5
2-DIAMETERS OF PIPE CONNECTIONS............................................................................................... 6
3-DIMENSIONS........................................................................................................................................ 6
4-DESIGNATION OF COMPONENTS ..................................................................................................... 7
5-CIRCULATING PUMP CHARACTERISTICS........................................................................................ 8
6-MIXING VALVE CHARACTERISTICS................................................................................................... 8
7-CHARACTERISTICS OF THE EXPANSION VESSEL.......................................................................... 8
8-BURNER TYPE ..................................................................................................................................... 9
9-HEAT PERFORMANCE ........................................................................................................................ 9
III - OPERATION ........................................................................................................................................ 10
1-DESCRIPTION .................................................................................................................................... 10
IV - INSTALLATION ................................................................................................................................... 11
1-GENERAL............................................................................................................................................ 11
2-VENTILATION ..................................................................................................................................... 12
2.1 - B23 type conventional flue outlet ............................................................................................. 12
2.2 - C13/C33 type balanced flue outlet .......................................................................................... 12
3-COMBUSTION PRODUCT FLUEING................................................................................................. 12
3.1 - Boiler placement according to the combustion products outlet system
and to the hydraulic connection ............................................................................................... 13
3.2 - Evacuation by chimney flue (B23/B23p/C33) .......................................................................... 14
3.3 - Balanced flue outlet C13 /C33 ................................................................................................. 18
4-CONDENSATE DRAINAGE................................................................................................................ 25
5-ASSEMBLY OF ACCESSORIES DELIVERED WITH THE BOILER................................................... 25
5.1 - Bleed + bend ........................................................................................................................... 25
5.2 - 1" - Ø 22 bends + seal ............................................................................................................. 25
6-FCX/BS HYDRAULIC CONNECTION KIT (OPTION)......................................................................... 26
7-HYDRAULIC CONNECTION............................................................................................................... 26
7.1 - GEMINOX recommendations .................................................................................................. 26
7.2 - Accessories to connect, install or adjust .................................................................................. 26
7.3 - Hydraulic connection for models FCX to a single heating circuit ............................................. 27
7.4 - Hydraulic connection for models FCX+ DHW production system of type BS
to a single heating circuit ......................................................................................................... 28
7.5 - Hydraulic connection for models FCX to a double heating circuit ........................................... 29
7.6 - Hydraulic connection for models FCX+ DHW production system of type BS
to a double heating circuit ........................................................................................................ 30
8-OIL CONNECTION.............................................................................................................................. 31
9-ELECTRICAL CONNECTION.............................................................................................................. 31
9.1 - Connection to the mains .......................................................................................................... 31
9.2 - Connection to the terminal box ................................................................................................ 31
9.3 - Principle schematic .................................................................................................................. 33
9.4 - Wiring schematic ..................................................................................................................... 34

- 3 -
CONTENT
V-COMMISSIONING ............................................................................................................................... 35
1-PROTECTION OF THE INSTALLATION............................................................................................. 35
1.1 - Bionibal .................................................................................................................................... 35
1.2 - Bionibagel ................................................................................................................................ 35
1.3 - Products equivalent to Bionibal or Bionibagel ......................................................................... 35
2-FILLING THE SYSTEM WITH WATER............................................................................................... 36
3-OIL INLET............................................................................................................................................ 36
4-PRE-COMMISSIONING CHECK......................................................................................................... 36
5-USER INFORMATION......................................................................................................................... 36
6-COMMISSIONING............................................................................................................................... 37
6.1 - Commissioning procedure - without regulator ......................................................................... 37
6.2 - Commissioning procedure - with regulator .............................................................................. 38
6.3 - Commissioning the oil burner .................................................................................................. 38
7-CHECKING THE SAFETY DEVICES.................................................................................................. 39
VI - MAINTENANCE .................................................................................................................................. 40
1-CLEANING THE BOILER SHELL........................................................................................................ 40
2-CLEANING THE CONDENSOR.......................................................................................................... 41
3-BURNER MAINTENANCE................................................................................................................... 41
4-CHECKING ACCESSORIES............................................................................................................... 41
5-EXPANSION VESSEL PRE-INFLATION PRESSURE CHECK.......................................................... 42
6-COMBUSTION PRODUCT FLUES..................................................................................................... 42
7-OIL FILTER.......................................................................................................................................... 42
8-CHANGING A THERMOSTAT OR A THERMOMETER ..................................................................... 43
8.1 - Bulbs positioned in the boiler shell pocket ............................................................................... 43
8.2 - Bulb positioned on the heating output tube ............................................................................. 43
8.3 - Bulb positioned in the pocket of the condensor ....................................................................... 43
8.4 - Changing thermostats or thermometers .................................................................................. 43
9-DRAINING ........................................................................................................................................... 44
VII - OPERATING FAULTS ........................................................................................................................ 45
1-BURNER SHUTDOWN........................................................................................................................ 45
2-SHUTDOWN BY OVERHEATING THERMOSTAT CUT-OUT............................................................ 45
2.1 - Water overheating safety thermostat ....................................................................................... 45
2.2 - Combustion product overheating safety thermostat ................................................................ 45
VIII - REGULATIONS ................................................................................................................................... 46
1-DECLARATION OF CONFORMITY.................................................................................................... 46
IX - NOMENCLATURE .............................................................................................................................. 47

- 4 -
I - PRESENTATION
1- DESCRIPTION
Standardised description: type C sealed circuit
combustion boiler, heating only, 22.3 kW or
30,5 kW, with an oil spray burner in accordance with
EN 267 and a flue for B23 / B23p / C13 / C33 type
combustion products.
The FCX boiler conforms to the French standard
XP D 35-430 relating to type C oil boilers.
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 with pre-heater,
- an air inlet duct to the burner,
- a circulating pump,
- a manual mixing valve (can be motorised),
- a 3 bar safety valve,
- an expansion vessel,
- a manometer,
- a drain cock,
- 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.
OPTIONS:
- Conventional flue connection kit (B23 / B23p).
- Accessories for the conventional flue connection
(B23 / B23p).
- Horizontal flue kits (C13) for connecting the boiler
with a straight horizontal or angled horizontal ba-
lanced flue
- Accessories for the vertical flue boiler connection
(C33).
- Settings in accordance with room temperature.
- Analogue or digital settings taking account of cli-
matic conditions.
- Domestic hot water production tank.
(MODULE FCX / BS / EBS).
- Independent domestic hot water production sys-
tem (BS/EBS type).
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)

- 5 -
II - TECHNICAL SPECIFICATIONS
1 - CHARACTERISTICS
* A 3m horizontal or vertical concentric flue connec-
tion increases in efficiency by about 2 %.
Model
FCX 22 C FCX 30 C
Certification following efficiency directive 92/42/CEE CE1312AS036R
Connection B23/B23p/C13/C33
Power output maxi kW 22,3 30,5
Heat flow maxi kW 23,8 31,5
Efficiency (in B23)* 60/80 °C % 96,3 96,7
Part load efficiency (30 %) (B23)* % 99,0 99,8
Combustion product temperature (B23)maxi °C 90,0 95,5
Flow rate of combustion products (0 °C, 1013 mbar) g/s 11 15
Permitted back pressure maxi Pa 30 30
Air flow required for combustion (0°C, 1013 mbar) m3/h 29,1 39,4
Combustion chamber length mm 228 239
ØCombustion chamber mm 294 350
Combustion chamber volume dm315 23
Volume of combustion products circuit dm350 52,5
∆P flue Pa 25
Heating service pressure maxi bar 3
Heating circuit water temperature mini/maxi °C 10/80
Boiler temperature maxi °C 80
Water overheating safety thermostat °C 110
Flue overheating safety thermostat °C 120
Boiler water capacity litre 16 25
Primary water flow 60/80 °C m3/h 0,96 1,3
∆P water (at nominal flow) mCE 1,0 1,8
Heatlosses ∆T 30 K
∆T 50 K W
W137 260 144 273
Service consumption coefficient (∆T 50 K) %1,3
Total capacity of expansion vessel litre 812
Useful capacity (for static height of 5m) litre 57,5
Power consumption (Continuous working with heating circulating
pump at maximum speed) W277 297
Power consumption with heating circulating pump
Speed 1
Speed 2
Speed 3
W
W
W
40
60
88
Power absorbed (with burner, without circulator) W 189 209
Power supply / Protection index 230 V - 50 Hz / IP x 0D
Class of electrical insulation 1
Absorbed intensity maxi A1,2 1,3
Weight without packaging kg 134 158
Weight with packaging kg 148 168

- 6 -
TECHNICAL SPECIFICATIONS
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 5 - page 25).
3 - DIMENSIONS
Note:
- Be sure to leave a sufficient gap behind the boiler
for access to the combustion product evacuation
trap.
Model FCX
ØCombustion products mm 80/125
ØHeating flow/return inch 1
ØDomestic hot water production system or 2nd
heating circuit connection inch 1
ØCondensate drain inch 40
Ø Heating water drain inch 1/2
ØAir bleed inch 3/4
257
458
863
800 mini
873
141 56 88 56
873
699
24
601
993
FCX-01-3
224
202 111
210
Fig. 1
Front view Side view Rear view

- 7 -
TECHNICAL SPECIFICATIONS
4 - DESIGNATION OF COMPONENTS
10 13
37
9
32
FCX-69-3
19
21
24 23
15
16
8
29
12
25
34
14
10
11
35
6 11828
22
26 33
27
27
Fig. 2
Front view Rear view
1) Control panel
2) 1st circuit heating flow
3) 1st circuit heating return
4) 2nd circui heating flow / Primary flow - (outlet of the
boiler to the domestic hot water preparation) (optio-
nal)
5) 2nd circuit heating return / Primary return - (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
12)Sight glass
13)Boiler shell
14)Pressure gauge
15)Combustion test point
16)Siphon
17)Evacuation des produits de combustion
18)Heating circulating pump
19)Safety valve
20)Weld for air bleed connection (bend + air bleed deli-
vered with the boiler)
21) Air inlet duct to the burner
22)Expansion vessel
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)Conduit for passage of 230 V cables
32)Conduit 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 val-
ve
37)Hole for check or adjustment of the burner oil pump
pressure

- 8 -
TECHNICAL SPECIFICATIONS
5 - CIRCULATING PUMP CHARACTERISTICS
The circulating pump is equipped with a 3-speed
motor with a 88 W 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 (section 9.2 - page 31 - chapter IV -
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 (e.g. 8 m = 0.8
bar).
0 3,3
0,5 2,2
0 5,4 1 1,3
0,5 5 1,5 0,6
1 4,4 0 4,8
1,5 3,9 0,5 3,9
2 3,2 1 3
2,5 2,5 1,5 2,1
2 1,4
RS 15/5-3 130
0
1
2
3
4
5
6
0123
Débit / Water flow / Durchfluß (m
3
/h)
Pression / Head /
Druck (mCE)
Fig. 3
4050 100 200 500 1000 2000 4000
1
2
5
10
20
40
100
200
300
10
30
20
40
50
60
70
80
90
100
% hot water
Flow (l/min)
Setting button position Pressure drop (mmCE)
123579
10
0
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

- 9 -
TECHNICAL SPECIFICATIONS
8 - BURNER TYPE
9 - HEAT PERFORMANCE
Models FCX 22 C FCX 30 C
GEMINOX oil burners (with pre-heater) ST 108 FUV ST 120 RV
Fig. 6 PCI thermal efficiency
(Qc=19,2 kW ,CO2=13%, excluding wall losses)
97
98
99
100
101
102
103
20 30 40 50 60
Return temperature (°C)
PCI thermal efficiency (%)
Perf therm FCX

- 10 -
III - OPERATION
1- DESCRIPTION
The FCX boiler is a sealed exhaust circuit conden-
sation boiler.
It is equipped with an oil-burner with pre-heater.
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 remova-
ble baffles, 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
channel 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
chapter chapter IV - INSTALLATION).

- 11 -
IV - INSTALLATION
1 - GENERAL
LOCATION OF BOILER
The boiler can be installed on the inner face of an
extemal wall - and some intemal walls - providing
they are flat, vertical and capable of adequately sup-
porting the weight of the boiler and any ancillary
equipment.
The boiler may be installed in any room or intemal
space, although particular attention is drawn to the
requirements of the current I.E.E. Wiring Regula-
tions and, in Scotland, the electrical provisions of
the Building Regulations applicable in Scotland with
respect to the installation of the boiler in a room or
intemal space containing a bath or shower. Where
installation is in a room containing a bath or shower,
any electrical switch or boiler control utilising mains
electricity should be situated sothat it cannot be tou-
ched by a person using the bath or shower.
Where installation will be in an unusual location,
special procédures may be necessary and BS.6798
gives detailed guidance on this subject.
A compartment used to enclose the boiler MUST be
designed and constructed specially for this purpose.
An existing cupboard or compartment may be used
provided it is modified for the purpose. Details of es-
sentiel features of cupboard/compartment design,
including airing cupboard installations, are given in
BS.6798.
In siting the boiler, the following limitations MUST be
observed :
1) The position selected for installation MUST allow ade-
quate space for servicing in front of the boiler and for
air circulation around the boiler.
2) This position MUST also permit the provision of a sa-
tisfactory balanced flue termination.
When siting the boiler, provision must be made for
the disposal of the condensate, see Section 4 -Con-
densate drain.
The pressure relief valve connection should be rou-
ted to an extemal, visible point where the discharge
of steam or water cannot create a hazard to persons
or property. BS.5449: 1 refers.
FLUEING
Detailed recommendations for flueing are given in
BS.5440.1. The following notes are intended for ge-
neral guidance.
AIR SUPPLY
a) - For room-sealed systems
Detailed recommendations for air supply are given
in BS.5440.2. The following notes are intended for
general guidance.
Where the boiler is to be installed in a room or inter-
nal space, the boiler does not require the room or in-
temal space containing it to have a permanent air
vent.
Where the boiler is to be installed in a cupboard or
compartment, permanent high and low level air
vents are required for cooling purposes in the cup-
board or compartment. Both vents must communi-
cate with the same wall to outside air.
The minimum effective area of the permanent air
vents required in the cupboard or compartment are
given in Table 3.
b) - For natural draught system :
Detailed requirements are given in BS 5440.2
Table 3 AIR VENT AREAS
Position of
air vents Air from room or internal space Air direct from outside
High level 186 cm² 93 cm²
29 in² 15 in²
Low level 186 cm² 93 cm²
29 in² 15 in²

- 12 -
INSTALLATION
WATER CIRCULATION SYSTEM
The expansion vessel is suitable for systems up to
80 litres water content. For systems in excess of
this capacity an additional pressurised expansion
vessel will be required. BS7074 and "British Gas
Specifications for Domestic Wet Central Heating
Systems' Part 3 gives guidance in this subject.
The central heating system shouldbe in accordance
with the relevant recommendations given in
BS.6798 and, in addition, for small bore and micro-
bore systems - BS.5449.1. The domestic hot water
system, if applicable, should be in accordance with
the relevant recommendations of BS.5546.
Copper tubing, to BS. 287 1. 1, is recommended for
water carrying pipework.
ELECTRICAL SUPPLY
Wiring extemal to the boiler must be in accordance
with the I.E.E. Wiring Regulations and any local re-
gulations.
2- VENTILATION
- All combustion appliances consume a quantity of
air proportional to their power.
• A ventilation space of at least 100 cm² must be
provided at least 1.8 m above the ground, as
well as an air input, below, of 100 cm².
- 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
(ventilation).
The installation premises may require
ventilation to be fitted according to its
features or use.
3 - COMBUSTION PRODUCT FLUEING
The combustion product outlet systems
described in this manual are systems
normally used on the European market.
However, some of them cannot be used
in all the countries of the EEC. The in-
staller or client must ensure that the
flue system chosen complies with local
installation regulations.
For the installation of the combustion
product evacuation system, C13/C33
accessories supplied as an option or an
authorized B23/B23p/C33 type combus-
tion product system must be used.
The optional polypropylene combus-
tion product evacuation tubes are ex-
clusively reserved for assembly with a
condensation boiler, maximum temper-
ature 120 °C. The combustion products
of the unit are evacuated at low temper-
ature (50 to 100°C) and saturated in hu-
midity.
The material for the lining must be cho-
sen specifically for “the condensation
burner boiler” and be corrosion proof.
The suitable materials certified as com-
bustion product systems are:
-904Lstainless steel,
- PPtl polypropylene,
- PVDF,
Refer imperatively to the CSTB techni-
cal notice or in the technical application
documentation (DTA) for fitting flues.
2.1 - B23 type conventional flue outlet 2.2 - C13/C33 type balanced flue outlet
!
! !

- 13 -
INSTALLATION
Irrespective of the connection type B23/
B23p/C13 /C33 :
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.(optional) or
flanged components to attach the pi-
ping securely 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 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).
A support with adjustable legs can be
installed on the horizontal part at the
boiler outlet to support the conduit.
.
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.
3.1.1 - Installation example
!
3.1 - Boiler placement according to the
combustion products outlet system
and to the hydraulic connection

- 14 -
INSTALLATION
An existing chimney flue can be used
provided that it is cleaned before the lin-
ing is fitted.
3.2.1 - Accessories
- order separately -
3.2.1.1 - Air trap kit B23/B23p
The air trap kit enables transformation of the boiler
to a version with a chimney.
See kit assembly guide
3.2.1.2 - Bleed T-bracket and off-centre adapta-
tor ∅80/110.
Using the bleed T-bracket is mandatory in the B23
configuration and is recommended in the B23p/C33
configuration, especially with a long conduit (avoids
the return of a large volume of condensates via the
boiler).
3.2.1.3 - adaptor ∅110./125
3.2.1.4 - PPtl tubes
certification DE Z.7.-2-1051
3.2.1.5 - Polypropylene elbow
certification DE Z.7.-2-1051
3.2.1.6 - PVC air inlet pipe
3.2.1.7 - Fastening collar (optional)
3.2 - Evacuation by chimney flue (B23/B23p/
C33)
Reference V65.38982
Reference Length (mm) ∅ (mm)
V65.38981
Bleed T-bracket
380 110
off-centre reduction
155 80/110
!
FCX-05-0
Fig. 7
FCX-70-
0
Fig. 8
Reference Length (mm) ∅ (mm)
V65.38983 180 110/125
Reference Length (mm) ∅ (mm)
V72.28810 1000 80
N40.26544 1000 110
N40.33218 2000 110
Reference Type of elbow ∅(mm)
V72.28808 90° 80
A20.26543 90° 110
N40.37320 45 110
Reference Length (mm) ∅ (mm)
V72.28812 1000 125
Reference Quantity ∅ (mm)
B00.16088 1110
FCX-80-0
Fig. 9
FCX-06-0
Fig. 10
FCX-07-0
FCX-78-0
Fig. 11
FCX-09-0
Fig. 12
AM5-26-0
Fig. 13

- 15 -
INSTALLATION
3.2.2 - Standard natural draft configuration
(B23) (flue operating at negative pres-
sure)
Definition: Lining of an existing chimney flue by a
sealed STAINLESS STEEL corrugated flue of
Ø125.
- The termination is specific to this configuration
and the outlet must be above the roof (comply
with the specification of the decree of 22 October
1969),
- Do not use the hose for a horizontal assem-
bly: condensate may be retained.
- Use the optional PP accessories (mandatory
bleed T-bracket, etc.) for the stainless steel con-
duit connection to the boiler,
- Fit a siphon (5) with a minimum 80 mm seal be-
tween the bleed T-bracket and the waste water
pipe,
-Ventilation for the flue (rep. 8) and the heating
system (section 2 - chapter IV - 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 burnerdirectly from the
room in which the boiler is fitted.
- The burner must be equipped with the air damper
(item no. 2) in order to prevent heat losses due to
draft.
3.2.2.1 - Installation example (B23)
Accessories :
1) PPtl off-centre reduction ∅ 80/110 (supplied with the
bleed T-bracket),
2) Air choke (supplied with the air damper kit),
3) PPtl tube ∅ 110 L = 1 m (cut to the length required),
4) Bleed T-bracket ∅ 110 (supplied with the off-centre re-
duction),
5) Siphon,
6) STAINLESS STEEL corrugated flue of grade 904 L
∅ 125,
7) Termination (above the roof) ,
8) Lining ventilation
9) Bleed T-bracket support
10)Adaptator ∅ 110/125,
-Each 45° elbow addedreduces the total length al-
lowed by 0.5 m.
L1max ≤20 m
9
6
4
13
8
21
2
FCX-10-0
L1
L2 = 1 m
maxi
0,4 m
5
7
10
Fig. 14

- 16 -
INSTALLATION
3.2.3 - Configuration with pressurized lining
(B23p)
Definition : Lining of an existing chimney flue by a
corrugated PP flue conduit of ∅110 according to
the height.
- The termination, specific to this configuration and
specified in the DTA, must have its outlet above
the roof (comply with the specification of the de-
cree of 22 October 1969),
- Do not use the hose for a horizontal assem-
bly: condensate may be retained.
- Fit a siphon (5) with a minimum 80 mm seal be-
tween 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 IV - 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 burnerdirectly from the
room in which the boiler is fitted.
- The burner must be equipped with the air damper
(item no. 2) in order to prevent heat losses due to
draft.
3.2.3.1 - Installation example
Accessories :
1) PPtl off-centre reduction ∅ 80/110 (supplied with the
bleed T-bracket),
2) Air choke (supplied with the air damper kit),
3) PPtl tube ∅ 110 L = 1 m (cut to the length required),
4) Bleed T-bracket ∅ 110 (supplied with the off-centre re-
duction)
5) Siphon,
6) PP corrugated flue ∅ 110,
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 EC standard EN 13 384-1.
-Each 45° elbow addedreduces the total length al-
lowed by 0.5 m.
Models
Maximum permitted length L1 with
bleed T-bracket with horizontal
connection 1 m at conduit diameter
Conduit ∅ 110
FCX 22 C 20 m
FCX 30 C 15 m
6
4
13
8
21
2
L1
0,4 m
7
FCX-52-0
L2 = 1 m
maxi
9
5
10
Fig. 15

- 17 -
INSTALLATION
3.2.4 - Configuration étanche (C33)
Definition: Lining of an existing chimney flue,
sealed with respect to the installation room by a PP
corrugated flue of Ø 80 or ∅110(in this case the air
inlet is obtained by the chimney flue around the
combustion product outlet) - (no ventilation con-
straints 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 seal be-
tween 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 bythe burner from outsidethe
room through the concentric terminal (The air in-
let sheath (21) is connected to the burner).
- Refer to the CSTB technical notice for install-
ing flues.
3.2.4.1 - Installation example
Accessories :
3) PPtl tube ∅ 80 L = 1 m (cut to the length required),
3) PVC tube ∅ 125 L = 1 m (cut to the length required),
or 1+3 = concentric extension ∅ 80/125
4) Bleed T-bracket (PPtl ∅ 80 for FCX 22) -
(PPtl ∅ 110 for FCX 30) (preferably to be used) or
Ø 80 with 90° elbow,
5) Siphon,
6) PP corrugated flue ( ∅ 80 for FCX 22) -
( ∅ 110 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.
Maximum length allowed: :
Lmax ≤L1 + L2 + 1 m ≤9 m
6
13
FCX-74-0
L1
21
4
7
L2 = 1 m
maxi
9
5
10
Fig. 16

- 18 -
INSTALLATION
3.3.1 - Installation regulations for balanced flues - Comply with the CSTB technical opinion 14/02-761
3.3 - Balanced flue outlet C13 /C33
Casement Air intake Dormer Dormer
Penetration on a gable end
with casement Penetration on a blind
gable end
Verge
Casement
Casement
Casement
Air intake
Internal angle
walls
Facing
Forbidden areas
Areas authorised on written
recommendations of the
architect in agreement with
the owner.
Authorized areas
With deflector
Without deflector
Terminal installation rules for sealed fuel boilers
(power under 70 kW)
Without casement
With casement
Fig. 17

- 19 -
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.
3.3.2 - horizontal balanced flue (C13)
GEMINOX 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 from a ventilation
hole or an opening,
- in front of the building or in a passa-
geway (risk of obstruction, smell of
combustion products, varying
amounts of steam depending on the
weather conditions).
- at less than 2 m from the ground or in
an area that can be accessed by a
young child (risk of obstruction - not
supllied).
Note:
- It is possible to raise the terminal using the flue
with elbow option.
- Each 45° elbow added reduces the total authori-
zed length by 0.5 m.
- Each 90° angle added reduces the total authori-
zed length by 1 m.
3.3.2.1 - 0,95 m straight horizontal balanced
flue kit (option)
See kit assembly guide
- Useful length afte assy.- l = 0.77 m
3.3.2.2 - 3 m angled horizontal balanced flue
(option)
3.3.2.3 - 3 m angled horizontal balanced flue -
straight (option)
Maximumlinearlengthof thehorizontalflue :
Lmax = 5 m
!
Reference Length (mm)
N40.28399 950
Reference V72.28414
Reference V72.31135
FCX-12-0
Fig. 18
FCX-13-0
Fig. 19
FCX-63-0
Fig. 20

- 20 -
INSTALLATION
3.3.2.4 - PPtl/PVC
Concentric extension (option)
Joint fitting.
(*) Useful length after assembly - L = 0,45 m or 0,95 m
3.3.2.5 - PPtl/PVC
concentric elbow (option)
Joint fitting.
3.3.2.6 - Fastening collar (optional)
3.3.2.7 - Adjustable support
3.3.2.8 - Installation examples
3.3.2.8.1 - Straight balanced flue
Accessory:
- 1 straight horizontal balanced flue kit - l = 0,95 m
3.3.2.8.2 - Angled balanced flue with hose
Accessory:
- 1 angled horizontal balanced flue kit - l = 3 m
Reference Length
mm ∅ int. mm ∅ ext. mm
N40.28397 500 80 125
N40.28398 1000 80 125
Reference Bend type ∅ int.
mm ∅ ext. mm
N40.28395 45° 80 125
N40.28396 90° 80 125
Reference Number ∅ (mm)
B00.29727 3125
Reference V72.29939
AM5-23-0
Fig. 21
AM5-24-0
90° Bend
Fig. 22
45° Bend
AM5-26-0
Fig. 23
PDG-SUP
Fig. 24
2m
minimum
0,77 m
FCX-16-0
130
Fig. 25
2 m
minimum
F
CX-17-0
130
Fig. 26