Immergas VICTRIX 50 User manual

Wall mounted condensing boilers with low NOx
VICTRIX 50
1
1 SPECIFICATIONS
50 kW (43,000 kcal/h) wall-mounted premixed condensing boiler
with sealed or open chamber, forced draught, high efciency and
forced circulation.
Approved for installation in both heating plants and outside buildin-
gs. Can be used in two congurations:
Open chamber and forced draught (appliance type B23/ B33 )
- Does not need any additional kit as it leaves the factory in this
conguration.
Sealed chamber and forced draught (appliance type C13/C33/C63)
- if installed using the vertical or horizontal concentric kits.
The generator consists of:
• combustion system of the total premixing type with cylindricel
multigas burner made of steel, complete with ignition electrodes
and ionizing monitoring probe;
• pneumatic type gas valve with double shutter;
• primary gas/water exchanger with coil made of AISI 316L stainless
steel;
• combustion chamber in stainless steel insulated on the inside with
ceramic panels;
• fumes extraction fan with electronically variable speed;
• condensation disposal circuit including syphon and exible drain
hose;
• hydraulics consisting of a delivery manifold, primary circuit
pressure switch, circulation pump including automatic air venting
valve;
• 4 bar system safety valve (ISPESL approved), pressure gauge for
the heating system;
• overtemperature safety thermostat;
• control panel equipped with electronic board with microprocessor
and innite ame modulation for the heating process plus P.I.D.
monitoring, modulation ranging from 10.0 to 50.0 kW (from 8,600
to 43,000 kcal/h);
• system delivery regulating probe;
• system return regulating probe;
• heating delivery temperature with 20 to 85°C factory setting;
• ignition delayer during the heating phase, antifreeze protection,
pump anti-blocking system, chinmey-sweep function;
• the boiler operating parameters can be entered and regulated by
means of keys while the status and operating modes are shown
on the 4-digit display;
• autodiagnosis system with digital display of the temperature,
the operating status and error codes on the permanently visible
display;
• IPX5D electrical insulation degree;
• pre-engineered for connection of the Series Regulator and external
probe;
• pre-engineered for connection of an external three-way valve for
use with a separate water heater in order to produce domestic hot
water;
• pre-engineered for operation in series (up to 3 generators);
• pre-engineered for installation of the ISPESL-approved safety
stub pipe;
• can be used with the Ø 80 mm hose pipe connecting system.
Supplied complete with traps for combustion analysis, bottom
protection grille and gas on-off cock.
Natural gas and L.P.G. fuelled Class II2H3+ appliance. CE marking.
The following model is available:
•VICTRIX 50 code 3.015276
NOTE: to correctly install the boiler, use the "Green series" Immergas
air intake/fumes exhaust kit dedicated to the VICTRIX 50 boiler in
both the single and series (bank) congurations.
VICTRIX 50 is the new wall-mounted condensing boiler for
room heating alone. It is pre-engineered for operation both
independently and in series (up to 3 appliances connected),
with the advantage of providing a globally higher efcien-
cy at lower running costs. Condensing technology allows
particularly high efciency ratings to be achieved (4 stars,
as established by Directive 92/42/EEC). VICTRIX 50's high
power is ideal when it comes to heating domestic systems
that have to deal with large volumes (semi-detached houses,
small condominiums and apartment blocks) and for com-
mercial and industrial uses. If a single boiler is installed, an
external three-way valve can be connected so as to use it
with a separate water heater and produce domestic hot wa-
ter. A hydraulic manifold can also be connected to boost the
circulation in the system, thus making it versatile and quick
to install. When operation is in series, several distribution
manifolds can be connected by means of threaded mecha-
nisms. The special environment-friendly burner guarantees
particularly low polluting emissions (the boiler belongs to the
most environment-friendly class established by the European
standards, i.e. class 5).

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LEGEND:
1 - Electronic board
2 - Delivery manifold
3 - System pressure switch
4 - Condensation drain pipe
5 - Air intake pipe
6 - Air fan
7 - Gas nozzle
8 - Venturi
9 - Detection electrode
10 - Cover of condensing module
11 - Sleeve with Venturi housing
12 - Condensing module
13 - Draught diverter
14 - Intakes (air A) - (fumes F)
15 - Positive signal pressure point
16 - Negative signal pressure point
17 - System return regulating NTC probe
18 - Overtemperature safety thermostat
19 - Dummy electrode
20 - Ignition plug
21 - Condensate syphon
22 - Current transformer
23 - Air venting valve
24 - Gas valve
25 - Circolulation pump
26 - Drain funnel
27 - System delivery regulating NTC probe
28 - Burner
29 - 4-bar safety valve
2 MAIN COMPONENTS

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VICTRIX 50
Upper casing line
3 MAIN DIMENSIONS
3.1 CONNECTIONS
SC = Condensation discharge
Distance between upper casing line and Ø 80 outlet
elbow: 170 mm
Distance between upper casing line and Ø 80/125
concentric inlet/outlet elbow: 200 mm
Model
VICTRIX 50
System delivery
M
1" 1/2
System return
R
1" 1/2
Gas supply
G
3/4"
Model
VICTRIX 50
Height mm
950
Width mm
600
Depth mm
525

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4 DIMENSIONS AND WET CONNECTIONS (OPTIONAL) WITH A SINGLE BOILER
NOTE: Unlike the appliance, the ISPESL safety kit and the
three-way valve kit (electric valve motor) have the IPX4D
electrical protection degree. If the appliance is installed ou-
tdoors, these safety devices and components must therefore
be adequately protected.
Immergas declines all liability if the installer fails to use the
genuine ISPESL-approved devices and kits manufactured by
Immergas, or uses them improperly.
The sensitive parts of the automatic thermal regulating and
blocking switches and those of the thermometer (not part of
the standard supply provided with the generator) must be
MR
positioned as described in the installation instructions, in
compliance with the provisions given in the "R" le.
For ISPESL planning reasons, an ISPESL-approved pressure
gauge must be added when the Immergas safety kit is instal-
led (as part of the standard supply, the boiler comes already
equipped with an ISPESL-approved 4-bar safety valve and
drain funnel).
The system return is pre-engineered with an expansion tank
connection.
1" 1/2
1" 1/2
1"
2" 1/2
1"

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5 DIMENSIONS AND WET CONNECTIONS (OPTIONAL) WITH BOILERS IN SERIES
(UP TO THREE APPLIANCES)
NOTE: Unlike the appliance, the ISPESL safety kit has the
IPX4D electrical protection degree. If the appliance is installed
outdoors, these safety devices must therefore be adequately
protected.
Immergas declines all liability if the installer fails to use the
genuine ISPESL-approved devices and kits manufactured by
Immergas, or uses them improperly.
The sensitive parts of the automatic thermal regulating and
blocking switches and those of the thermometer (not part of
the standard supply provided with the generator) must be
positioned as described in the installation instructions, in
compliance with the provisions given in the "R" le.
For ISPESL planning reasons, an ISPESL-approved pressure
gauge must be added when the Immergas safety kit is instal-
led (as part of the standard supply, the boiler comes already
equipped with an ISPESL-approved 4-bar safety valve and
drain funnel).
The system return is pre-engineered with an expansion tank
connection.
The modular generators, or ones installed in the series
conguration (bank) with the genuine Immergas hydraulic
manifold kit, must be considered a single appliance which
will have the serial number (factory number) of the generator
nearest to the ISPESL safety device.
The hydraulic manifolds are equipped with a check valve
installed on the return pipe and system on-off cocks on the
delivery and return pipes of each generator.
R
M

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6 CIRCULATOR HEAD AND FLOW RATE GRAPH
VICTRIX 50 boilers are supplied with built-in circulator and
three-position electric speed governor.
The circulator is the single-phase type (230 V - 50 Hz) are co-
mes already equipped with condenser. In new systems (single
pipe and modules), it is advisable to use the circulator pump
at top speed to obtain optimum operation from the boiler.
A = Available head at top speed with single boiler
B = Available head at second speed with single boiler
C = Available head at top speed with check valve for boilers in series (bank)
D = Available head at second speed with check valve for boilers in series (bank)
DYL 63-15
Head (kPa)
A
Flow rate l/h
CB
6.1 VICTRIX 50 CIRCULATOR
D
Head wc.)

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7 THERMOREGULATION SYSTEMS (OPTIONAL)
8 SERIES AND ZONE REGULATOR (CODE 3.015244)
Single modular generators or ones installed in series need an
adequate thermoregulation system able to dialogue with the
boiler in a simple way and meet the most varied operating
requirements.
This is why the VICTRIX 50 generator can be tted with a
series of accessories able to optimize the climatic adjustments
made to the entire system.
In short, VICTRIX 50 can be installed with two types of
system:
•In series (with the system divided into one or more zones),
using the series regulator with either the zone controller or
modulating ambient thermostat that regulates the heat in
the individual zones.
•Individually (with the system divided into zones) using the
series regulator with either the zone controller or modulating
ambient thermostat that regulates the heat in the individual
zones. A commercially available timer-thermostat can be
used if there is only one zone.
The Series and zone regulator allows the user to control, mo-
nitor and program the operating sequence of the generators
connected. The regulator can be set-up and programmed
using parameters that guarantee ideal temperature condi-
tions at all times of the day and night and throughout every
day of the week for both the heating system and domestic
hot water system (when VICTRIX 50 is used in conjunction
with a water heater). The series regulator can be tted into a
support afxed to a wall.
8.1 SPECIFICATIONS
The electrical connections are made with 2 wires powered at
230V (1.5 mm2 ) in diameter.
2 BUS data cables up to 50 meters in length are used to
connect to the boiler, allowing the device to:
• control up to three zones (2 of which mixed if necessary)
and a separate water heater unit. Since up to 5 series re-
gulators can be installed (of which only one, the so-called
Master, will be connected to the boiler board), systems with
up to a total 15 zones (of which 10 mixed if necessary) and
5 separate water heater units can be controlled;
• enter two ambient temperature values, one for the daytime
(comfort temp.) and one for the night (lower temp.);
• control the temperature of the domestic hot water (in
conjunction with a water heater Unit);
• select the operating mode for the heating and hot water
production functions of each individual hydraulic circuit:
- comfort temperature mode,
- low temperature mode,
- adjustable antifreeze temperature mode;
• control the boiler delivery temperature according to the ou-
tdoor temperature (in conjunction with the external probe),
with climatic curve settings;
• obtain information about the system:
- temperature of the system,
- operating mode,
- meter data,
- timer program,
- pump operating status,
- variable input values and operation;
• enter the operating parameters:
- operating times,
- operating mode,
- domestic hot water,
- direct, mixed 1, mixed 2 circuits,
- date and time;
• display operating faults with their relative error codes by
means of the check-control system;
• display the date, time, day of the week and temperature of
the generator.

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9 ZONE CONTROLLER (CE 3.015264)
The zone controller only operates in conjunction with the
series regulator. Besides the functions described for the series
thermoregulator, it allows the user to keep all the important
information concerning the operation of the appliance and
heating system under control and particularly ready to hand.
This means that the previously set parameters can be easily
modied without having go go to the place where the series
regulator is installed. the climatic timer-thermostat built
into the remote control panel allows the system's delivery
temperature to be adapted to the effective needs of the place
being heated so as to obtain the required ambient temperature
with the utmost precision and, thus, with evident savings in
running costs. The controller also allows the ambient tempe-
rature and effective outdoor temperature to be displayed (this
latter if the external probe is installed). The zone controller is
powered by the series thermoregulator by means of 2 BUS
data cables.
9.1 SPECIFICATIONS
2 BUS data cables up to 50 meters in length are used to
connect to the series and zone regulator, allowing the device
to:
• control up to one zone;
• enter two ambient temperature values, one for the daytime
(comfort temp.) and one for the night (lower temp.);
• control the temperature of the domestic hot water (in
conjunction with a water heater Unit);
• select the operating mode for the heating and hot water
production functions of each individual hydraulic circuit:
- comfort temperature mode,
- low temperature mode,
- adjustable antifreeze temperature mode;
• control the boiler delivery temperature according to the ou-
tdoor temperature (in conjunction with the external probe),
with climatic curve settings;
• obtain information about the system:
- temperature of the system,
- operating mode,
- meter data,
- timer program,
- pump operating status,
- variable input values and operation;
• enter the operating parameters:
- operating times,
- operating mode,
- domestic hot water,
- direct, mixed 1, mixed 2 circuits,
- date and time;
• display operating faults with their relative error codes by
means of the check-control system;
• display the date, time, day of the week and temperature of
the generator.

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11 EXTERNAL PROBE (CODE 3.015266)
The external probe allows the maximum temperature delive-
red to the system to be automatically lowered or raised as
the outdoor temperature rises or lowers, thus adapting the
heat supplied to the system to suit the outdoor temperature
variations.
The probe is connected straight to the boiler's terminal board
with two wires. Once connected, it always acts even without
the thermoregulation kit.
10 MODULATING AMBIENT THERMOSTAT (CODE 3.015245)
The modulating ambient thermostat (not a conventional
On/Off model) only operates in conjunction with the series
regulator and allows the user to regulate the ambient tempe-
rature of one of the zones into which the system is divided
(both in individual and series installations).
The regulation curve of the ambient temperature in the zone
can be modied by means of the series regulator itself.
The modulating ambient thermostat is powered by the series
thermoregulator via 2 BUS data cables.
10.1 SPECIFICATIONS
2 BUS data cables up to 50 meters in length are used to
connect to the series and zone regulator, allowing the device
to:
• control up to one zone;
• vary the ambient temperature of the zone;
• select the operating mode for the zone heating function:
- xed comfort temperature mode,
- xed low temperature mode,
- operation with the timer program.

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VICTRIX 50
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VICTRIX 50
12 EXAMPLES OF VICTRIX 50 INSTALLATIONS WITH A SINGLE BOILER
LEGEND: 1 - VICTRIX 50 generator 2 - Series and zone regulator 3 - Zone controller 4 - Modulating ambient thermostat 5 - External probe 6 - Zone 1 temperature probe 1 (CMI-1) 7 - Zone 2 temperature probe 2 (CMI-2) 8 - Common delivery probe 9 - Temperature probe of Water heater unit 10 - Zone 1 mixer valve (CMI-1) 11 - Zone 2 mixer valve (CMI-1) 12 - Zone 1 heating circuit pump (CMI-1) 13 - Zone 2 heating circuit pump (CMI-2)
14 - Zone 3 direct circuit pump (CD) 15 - Water heater unit supply pump 16 - Zone 1 safety thermostat (CMI-1) 17 - Zone 2 safety thermostat (CMI-2) 19 - Fuel on-off valve bulb 20 - ISPESL approved pressure gauge cock 21 - ISPESL approved thermometer 22 - ISPESL approved manually reset pressure switch 23 - ISPESL approved manually reset thermostat
24 - Expansion tank connection
25 - Expansion tank 26 - Manifold/mixer 27 - External water heater unit 28 - Fuel on-off valve 29 - Check valve 30 - Sludge collecting system lter 31 - Thermometer trap

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VICTRIX 50
13 EXAMPLES OF VICTRIX 50 INSTALLATIONS IN SERIES
LEGEND: 1 - VICTRIX 50 generator 2 - Series and zone regulator 3 - Zone controller 4 - Modulating ambient thermometer 5 - External probe 6 - Zone 1 temperature probe (CMI-1) 7 - Zone 2 temperature probe (CMI-2) 8 - Common delivery probe 9 - Water heater unit temperature probe 10 - Zone 1 mixer valve (CMI-1) 11 - Zone 2 mixer valve (CMI-1) 12 - Zone 1 heating circuit pump (CMI-1) 13 - Zone 2 heating circuit pump (CMI-2) 14 - Zone 3 direct circuit pump (CD)
15 - Water heater unit supply pump 16 - Zone 1 safety thermostat (CMI-1) 17 - Zone 2 safety thermostat (CMI-2) 19 - Fuel on-off valve bulb 20 - ISPESL approved pressure gauge cock 21 - ISPESL approved thermometer 22 - ISPESL approved manually reset pressure switch 23 - ISPESL approved manually reset thermostat 24 - Expansion tank connection 25 - Expansion tank 26 - Manifold/mixer 27 - External water heater unit 28 - Fuel on-off valve 29 - Check valve 30 - Sludge collecting system lter 31 - Thermometer trap 32 - Draught circuit air lock 33 - Condensation drain pipe 34 - System on-off cock

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VICTRIX 50
OPTIONAL ELECTRICAL CONNECTIONS.
The M and O terminals of thr Bus are connected in order to
use the series and zone regulator.
The ambient thermostat (S20) must be connected to terminals
F and E, eliminating jumper X40. The external probe (B4) must
be connected to terminals G and J.
LEGEND:
B1 - Delivery probe
B2 - Domestic water probe (optional)
B4 - External probe (optional)
B5 - Return probe
E1 - Ignition electrode
E2 - Detection electrode
E4 - Safety thermostat
M1 - Boiler circulator
M20 - Fan
M30 - Three-way valve (optional)
R8 - Water heater function inhibiting resistance
S1 - Main switch
S5 - System pressure switch micro
S16 - Summer switch (optional)
S20 - Ambient thermostat (optional)
T10 - Low voltage transformer
X40 - Ambient thermostat jumper
Y1 - Gas valve (24 Vdc)
14 WIRING DIAGRAM
The domestic water probe (B2) must be connected to termi-
nals R and H, eliminating the resistance (R8).
The three-way valve (M30) should be connected to terminals
T, S and K.
The summer switch (S16) must be connected to terminals
V and U.

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LEGEND:
1 - Visible funnel outlet
2 - ISPESL-approved 4 bar safety valve
3 - Boiler emptying cock
4 - Absolute pressure switch
5 - Delivery manifold
6 - Condensation trap
7 - Gas valve
8 - Air intake pipe
9 - Air ventilator
10 - Gas nozzle
11 - Detection electrode
12 - Condensing module cover
13 - Condensing module
14 - Draught diverter
15 - Air analyzer intake
16 - Fumes analyzer intake
17 - Δp gas pressure point
18 - System delivery regulating probe
19 - System return regulating probe
20 - Overtemperature safety thermostat
21 - Ignition electrode
22 - Burner
23 - Venturi negative signal (P2)
24 - Venturi positive signal (P1)
25 - Air/gas Venturi manifold
26 - Automatic air venting valve
27 - Boiler circulator
15 HYDRAULIC LAYOUT

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VICTRIX 50
“GREEN SERIES” INTAKE/EXHAUST KIT FOR VICTRIX 50
16 TYPE OF INSTALLATION
VICTRIX 50 boilers are approved for installation both inside
and outside the heat plant.
The "VICTRIX 50" boiler leaves the factory in the "B23" con-
guration (open chamber and forced draught). To change the
boiler conguration to type "C" (sealed chamber and forced
draught), dismantle the Ø 80 adapter, the plate and the seal
on the boiler cover so that the relative Ø 80/125 kits can be
used.
To correctly install the boiler, use the special Immergas
"Green" series air intake/fumes exhaust kit since the materials,
components and accessories have been specically designed
for this type of appliance.
The kits are made of plastic material so as to provide high resi-
stance to corrosion and make them very quick and functional
to install, also thanks to the push-in connection mechanism
and the silicone seals.
The boiler classication varies when the type of installation
changes:
Configuration type C with sealed chamber and forced
draught.
The boiler is installed using the relative Ø 80/125 concentric
kits after having disassembled the Ø 80 adapter, the plate and
the seal from the boiler cover.
Air is thus inlet and fumes exhausted directly outside the
building.
The following can be used as concentric intake/exhaust kit:
Concentric Ø 80/125 horizontal kit Code 3.015242;
Concentric Ø 80/125 vertical kit Code 3.015243.
Configuration type B23 with open chamber and forced
draught.
The boiler is installed using the Ø 80 adapter provided with the
boiler as part of the standard supply and to which the relative
Ø 80 fumes exhaust kit should be connected.
The air is taken straight from the room in which the boiler
is installed, while the fumes are exhausted through the ue
or straight outdoors. This means that the installation must
only be made in conjunction with one of the following fumes
exhaust kits:
Ø 80 horizontal terminal kit for wall-mounted exhausts
Code 3.015255;
Ø 80 horizontal kit for ue exhausts
Code 3.015254;
Ø 80 vertical terminal kit for direct exhausts
Code 3.015256.
When installed singly, again in the "B23" conguration, VICTRIX
50 can also be used in conjunction with the Ø 80 hose pipe
system for condensing boilers.
This method is particularly suitable for stacks or ues (or
technical apertures) that are not perfectly straight and where
a rigid piping system could be difcult to install.
When installed in series in heat plants or technical rooms,
special fumes manifolds can be used for exhausting into ues
equipped with non-return devices (air-locks) to prevent the
boiler's products of combustion from interfering with the
combustion circuits of other boilers that are off.

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VICTRIX 50
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VICTRIX 50
MAXIMUM TOLERATED LENGTH OF
Ø 80/125 HORIZONTAL KIT
Available resistance factor 100
Horizontal meters 14 + the rst
90° elbow
2
1
3
47
5
6
17 Ø 80/125 CONCENTRIC HORIZONTAL KIT (CODE 3.015242)
THE KIT INCLUDES:
1 - 1 (one) Ø 80/125 adapter
2 - 1 (one) seal
Part (3) is standard supply with the boiler
4 - 1 (one) Ø 80/125 concentric elbow a 87°
5 - 1 (one) Ø 80/125 concentric intake/exhaust terminal
6 - 1 (one) internal rose
7 - 1 (one) external rose

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VICTRIX 50
MAXIMUM TOLERATED LENGTH OF
Ø 80/125 VERTICAL KIT
Available resistance factor 100
Vertical meters 18
THE KIT INCLUDES:
1 - 1 (one) Ø 80/125 adapter
2 - 1 (one) seal
Part (3) is standard supply with the boiler
4 - 1 (one) rose
5 - 1 (one) aluminium plate
6 - 1 (one) xed half-shell
7 - 1 (one) Ø 80/125 concentric int./exh. terminal
8 - 1 (one) movable half-shell
2
1
3
4
5
8
7
6
18 Ø 80/125 CONCENTRIC VERTICAL KIT (CODE 3.015243)

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VICTRIX 50
17
VICTRIX 50
MAXIMUM TOLERATED LENGTH OF
Ø 80 VERTICAL KIT
Available resistance factor 100
Vertical meters 30
THE KIT INCLUDES:
1 - 1 (one) rose
2 - 1 (one) Ø 80 exhaust terminal
2
1
19 Ø 80 VERTICAL KIT (CODE 3.015256)

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VICTRIX 50
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VICTRIX 50
MAXIMUM TOLERATED LENGTH OF
Ø 80 HORIZONTAL KIT
Available resistance factor 100
Horizontal meters 30
20 Ø 80 HORIZONTAL TERMINAL KIT FOR
WALL-MOUNTED EXHAUST (CODE 3.015255)
20.1 Ø 80 HORIZONTAL TERMINAL KIT FOR
STACK EXHAUSTS (CODE 3.015254)
THE KIT INCLUDES:
1 - 1 (one) 90° Ø 80 elbow
2 - 1 (one) Ø 80 exhaust pipe
3 - 1 (one) internal rose
THE KIT INCLUDES:
1 - 1 (one) 90° Ø 80 elbow
2 - 1 (one) Ø 80 exhaust pipe
3 - 1 (one) internal rose
4 - 1 (one) external rose

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19
VICTRIX 50
Each component of the air intake/combustion product
exhausting system possesses a resistance factor calcu-
lated by means of tests and given in the following tables.
The resistance factor of each individual component is a
dimensionless magnitude. This parameter is conditioned by
the temperature of the uid and, thus, varies depending on
whether the component in question is installed in the air
intake section or in the part where the combustion products
are exhausted.
Each component also has a resistance corresponding to a
certain length in meters of pipe of the same diameter: this
is the so-called “equivalent length” obtained from the ratio
between the relative resistance factors.
To identify the link between these two parameters in the best
possible way, rst consider an 80 mm diameter 90° elbow
as an example. It possesses a 2.6 resistance factor on the
exhausting part. However, if a pipe 80 mm in diameter and 1
meter in length is taken as a reference, it will be found to have
a 1.2 resistance factor on the exhausting part. The equivalent
length “Leq” of the considered elbow will therefore be:
Leq = 2,6 : 1.2 = 2.1 m of Ø 80 mm pipe (on the exhaust).
Very briey, the loss of head of an 80 mm diameter 90° elbow
is the same as that of a 2.1 m length straight pipe of the same
diameter (installed on the fumes outlet).
All boilers have a maximum resistance factor of 100, cal-
culated experimentally. The maximum tolerated resistance
factor corresponds to the resistance found with the maximum
tolerated pipe length.
All this information allows calculations to be made in order to
ascertain whether the various congurations of the system are
feasible. In short, to ensure that the appliance operates in the
correct way, every air intake/combustion product exhaust
conguration must have a maximum overall resistance
factor of 100. This limit must not therefore be exceeded
when the resistance factors of the individual components
used are added together.
The resistance factors and equivalent losses in meters are
given in the catalogue in relation to:
- the “Green series” fumes exhaust pipes to use when making
the combustion-aiding air supply pipes and fumes exhaust
pipes (i.e. the pipes that connect the appliance and the
stack/ue/ducted pipe);
- the components to use for making the Ø 80 mm hose
pipe ducting system for condensing boilers, described
further on in this brochure (meaning the mainly vertical
pipe specically installed to collect the eliminate the pro-
ducts of combustion as well as being able to withstand
their components and condensation and t for installation
in an already existing and not perfectly straight stack/ue/
technical aperture).
21 RESISTANCE FACTORS AND EQUIVALENT LENGTHS

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TYPE OF DUCT
Resistance
Factor
(R)
Equivalent
length in m of Ø 80/125
concentric pipe
Equivalent
length
in m of Ø 80 pipe
Ø 80/125 m 1 concentric pipe 4.9
Intake
and
exhaust
1.0 m 4.0 m
exhaust
90° elbow Ø 80/125 concentric pipe 9.5
Intake
and
exhaust
1.9 m 7.9 m
exhaust
45° elbow Ø 80/125 concentric pipe 6.8
Intake
and
exhaust
1.4 m 5.6 m
exhaust
Terminal complete with Ø 80/125 horizontal concentric
intake-exhaust pipe 26.8
Intake
and
exhaust
5.5 m 22.3 m
exhaust
Ø 80/125 horizontal concentric intake-exhaust terminal 22.9
Intake
and
exhaust
4.7 m 19.0 m
exhaust
Terminal complete with Ø 80/125 vertical concentric
intake-exhaust pipe
16.7
Intake
and
exhaust
3.4 m 13.9 m
exhaust
Ø 80/125 vertical concentric intake-exhaust terminal 13.3
Intake
and
exhaust
2.7 m 11.0 m
exhaust