Ferroli ECONCEPT 50 A User manual

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ECONCEPT 50 A
Appr. nr. B99.15 A - CE 0063 BL 3475
cod. 3544205/0 ediz. 11/2002
WALL-HUNG, PRE-MIX
GAS-FIRED CONDENSING BOILER
INSTALLATION
AND
OPERATING INSTRUCTIONS

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ECONCEPT 50 A
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IMPORTANT
Your “benchmark” Installation, Commissioning and Service Record Log Book will be enclosed in
your customer information pack.
“This record must be completed and left with the end user”.
Ferroli is a member of the Benchmark initiative and fully supports the aims of the programme.
Benchmarkhasbeenintroducedtoimprovethestandardsofinstallationandcommissioningofcentral
heating systems in the UK and to encourage the regular servicing of all central heating systems to
ensure safety and efficiency.
Please see installation and servicing guidlines.
CE MARK
CE mark documents that the Ferroli gas appliances comply with the requirement contained in
European directives applicable to them.
In particular, the appliances comply with the following CEE directives and the technical specifications
provided from them:
• Gas appliances directive 90/396
• Efficiencies directive 92/42
• Low tension directive 73/23 (modified from the 93/68)
• Electromagnetic compatibility directive 89/396 (modified from the 93/68)
INSTRUCTIONS AND REGULATIONS
Assembly, installation, first start up and maintenance must be carried out by competent persons only,
in accordance with all current technical regulations and directives.
c.o.s.h.h.
Materials used in the manufacture of this appliance are non hazardous and no special precautions are
required when servicing.
Related Documents
This appliance must be installed strictly in accordance with these instructions.
The Gas Safety Regulations (Installations & Use) 1996.
The Local Building Regulations.
The Building Regulations.
The Buildings Standards (Scotland - Consolidated) Regulations.
British Standards Codes of Practice:
B.S. 7593 1992 TREATMENT OF WATER IN DOMESTIC HOT WATER CENTRAL HEATING
SYSTEMS
B.S. 5546 1990 INSTALLATION OF HOT WATER SUPPLIES FOR DOMESTIC PURPOSES
B.S. 5440 Part 1 2000 FLUES
B.S. 5440 Part 2 1989 AIR SUPPLY
B.S. 5449 1990 FORCED CIRCULATION HOT WATER SYSTEMS
B.S. 6798 1987 INSTALLATION OF GAS FIRED HOT WATER BOILERS
B.S. 6891 1989 GAS INSTALLATIONS
B.S. 7671 1992 IEE WIRING REGULATIONS
B.S. 4814 1990 SPECIFICATION FOR EXPANSION VESSELS
B.S. 5482 1994 INSTALLATION OF LPG
Model Water Bye Laws
For Northern Ireland the rules in force apply

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• Read the warnings given in this manual
thoroughly. They provide important in-
formation for safe installation, use and
maintenance
• Keep the manual safe for future consul-
tation.
• The instruction manual is an integral and
essential part of the product and must
be kept by the user.
• If the appliance is sold or transferred to
another owner or if the owner moves,
leaving the appliance behind, always
ensure that the manual is kept with the
appliance for consultation by the new
owner and /or installer.
• Incorrect installation or poor mainte-
nance absolves the manufacturer from
all liability for damage to persons or
property.
• Installation and maintenance must be
carried out and conform with current
legislation, according to the manufac-
turer’s instructions and by qualified per-
sonnel.
• Before cleaning or maintenance, dis-
connect the appliance from the mains
via the switch on the appliance or a
suitable isolating device.
• In the event of malfunction or faulty
operation, isolate the appliance. Do not
attempt to repair or carry out any other
operation on the appliance directly.
Contact qualified personnel only.
• Repairs or the replacement of compo-
nents must be carried out exclusively by
qualified personnel using original spare
parts only. Failure to respect the above
my compromise the safety of the appli-
ance.
• To guarantee efficient operation, the
appliance must be serviced once a year
by an authorised service centre.
• The appliance may not be used for pur-
poses other than those for which it was
explicitly designed. Any other use is
consideredimproperandthereforedan-
gerous.
• Incorrect installation and use or failure
to follow the instructions provided by
the manufacturer absolve the manufac-
turer from all liability for damage.
• After unpacking, check that the con-
tents are complete and undamaged.
• Keep packing out of reach of children as
it may be potentially hazardous.
• To clean external parts, use a damp
cloth moistened with soapy water if nec-
essary. Avoid using abrasive cleaning
products and solvents.

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1. CHARACTERISTICS AND TECHNICAL DATA .................................. 5
1.1 Introduction ................................................................................................. 5
1.2 Boiler control panel ..................................................................................... 5
1.3 Ignition and Shut-down ............................................................................... 6
1.4 Regulations .................................................................................................. 7
1.5 Maintenance ................................................................................................ 8
1.6 Fault codes .................................................................................................. 8
2. INSTALLATION ................................................................................ 9
2.1 General Instructions .................................................................................... 9
2.2 Positioning and wall mounting .................................................................... 9
2.3 Connection to the hydraulic system.......................................................... 10
2.4 Connection to the gas system................................................................... 11
2.5 Electrical connections ................................................................................ 12
2.6 Flues........................................................................................................... 14
2.7 Condensation discharge connection ......................................................... 19
2.8 Modular installation ................................................................................... 20
3. SERVICE AND MAINTENANCE .................................................... 22
3.1 Settings ...................................................................................................... 22
3.2 Commissioning and testing ....................................................................... 23
3.3 Maintenance .............................................................................................. 25
3.4 Troubleshooting ......................................................................................... 26
4. OPERATING INSTRUCTIONS ........................................................ 28
4.1 Dimensions and connections ..................................................................... 28
4.2 General view and main components ......................................................... 29
4.3 Technical data table ................................................................................... 30
4.4 Diagrams .................................................................................................... 31
4.5 Wiring diagrams ........................................................................................ 32

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Econcept 50 A
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1. CHARACTERISTICS AND TECHNICAL DATA
1.1 Introduction
Dear Customer,
Thank you for having chosen the Econcept 50 A, the latest generation of FERROLI wall-hung boiler, featuring
advanced design and cutting-edge technology.
The Econcept 50 A is a pre-mix condensing thermal generator for heating , with very high thermal efficiency
and very low emissions, fired by natural gas or LPG.
The boiler can be connected with external DHW storage.
The boiler control and regulation system is microprocessor-based, with advanced self-diagnostics. The user
interface, made up of a keypad and display, is user-friendly, and shows the operating status of the appliance
at all times. (The operating parameters and the data logs are saved internally and can be called up using the
Personal Computer interface to simplify Service operations).
The heat output is regulated continuously across the entire operating range (also with DHW storage), with
temperature-scrolling climate control, which automatically adapts the operating mode to the characteristics
of the internal and external environment, of the building and its location, using external and internal sensors
(optional extra).
1.2 Boiler control panel
fig. 1
Ignition
switch
Display D2Display D1
Display D3
MODE button - Use this button to scroll the parameters.
RESET button - Use this button to reset the operation of the boiler in the event of shut-
down.
MODIFY button - Use these buttons to modify the regulation values.
CONFIRM button - Use this button to enable the set regulation value.
MODE display - Indicates the operating mode of the boiler or the selected parameter.
DATA display - Indicates value of the parameters
Led L1 - Indicates:Economy Operation
Led L2 - Indicates:Comfort Operation
D1
D2 D3
Function of the buttons
Display indications

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1.3 Ignition and Shut-down
Ignition
Check that any shut-off valves in the heating system and domestic hot water circuit outside of the boiler are
open. Open the gas control upstream from boiler and press the main switch. The boiler will perform a self-
test cycle lasting approximately one minute, at the end of which it is ready for operation. The ignition and
shut-down of the burner assembly are completely automatic operations, which depend on the requirements
of the heating system or domestic hot water circuit (display should read "FHI" during test).
Operating mode
Standby
Heating
Domestic hot water
Standby following domestic hot water op.
Standby following heating op.
Waiting for DHW production
Display “D1” Display “D2/D3”
Central heating outlet temperature
Central heating outlet temperature
Domestic hot water temperature
Domestic hot water temperature
Central heating outlet temperature
Domestic hot water temperature
Operating indications on the display
During operation, without pressing any of the buttons the display shows the operating status of the
appliance:
Summer/Winter Selection (00 = Summer - 11 = Winter)
Economy/Comfort Selection (0 = Economy - 1 = Comfort)
CH outlet temperature view and setting
Display and setting DHW storage temperature
Display system return temperature
External temperature
Flue gas temperature
-
-
Boiler power
Compensation curve setting
-
DISPLAY D1 DISPLAY D2/D3
Accessing the operating menu
Pressing the “ - mode” button once accesses the operating menu. Pressing the “ - mode” button again
displays the following parameters and information in sequence:
Note: when the burner fires a small. Will appear in display D1 after the letter.

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1.4 Regulations
Setting the heating system temperature
Set, using the room thermostat or remote control, the desired temperature inside the rooms. When acting
ontheroom thermostat, the boiler isturnedon and the heating systemwateris brought to the centralheating
outlet set temperature or calculated temperature (with temperature scrolling active). On reaching the
required temperature inside the rooms, the boiler will switch off.
If no room thermostat or remote control is installed, the boiler will maintain the heating system temperature
at the central heating outlet setpoint.
To set the central heating outlet temperature, access the operating menu, and using the button display
parameter 1 – central heating outlet temperature. On pressing one of the buttons the display will start
to flash, showing the outlet temperature setpoint. Use the buttons to set the required value. To
activate the new value, press the button . To cancel the setting, do not press the button , and press
the button .
Shut-down
In the event of extended periods of inactivity close the gas control upstream from the boiler and disconnect
the electrical power supply to the appliance. In this case, the boiler antifreeze protection function is also
disabled; this function switches on the burner assembly when the heating system temperature falls below
5°C.
For extended periods of inactivity during the winter months, in order to avoid damage due to
freezing, all the water should be drained from the boiler, both the domestic hot water and the heating
system; alternatively, drain only the domestic hot water and introduce antifreeze into the heating
system.
For short periods of inactiviti leave the power and gas turned on, the frost protection will activate
if the appliance falls below 5°C, however, this will only protect the appliance. For system protection
internal and external frost stat.

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20
30
40
50
60
70
80
90
20 10 0 -10 -20
Temperatura esterna °C
Temperatura
di mandata impianto C°
1
2
3
4
5
6
7
8
9
10
1.5 Maintenance
This appliance must be serviced anually by an approved corgi engineer.
The casing, the control panel and the aesthetic parts of the boiler can be cleaned using a soft and damp cloth.
Do not use abrasives or solvents.
1.6 Fault codes
In the event of operating problems, the display flashes and shows the code identifying the fault code.
The display D1 is marked by the letter “F” and will temporary shut-down, this will reset automatically as soon
as the value returns within the boiler’s normal operating range.
The display marked by the letter “A” causes a shut-down of the boiler which can be reset by the user. To reset
operation, press the (reset) button.
If the problem persists, or for diagnosis if the fault codes (page 26), please refer to the “troubleshooting”
chapter in this manual for more details.
Outside temperature compensation
When the (optional) external probe is installed, the boiler regulation system functions in “Outside
temperature compensation” mode. In this mode, the temperature of the heating system is regulated
according to the external climatic conditions, so as to guarantee a high degree of comfort and energy saving
all year round. Specifically, when the external temperature falls, the central heating outlet temperature is
increased, according to a pre-determined “compensation curve”.
In this mode, the temperature set in parameter 1 of the operating menu becomes the maximum central
heating outlet temperature. This should be set to Maximum to allow the system to regulate over the entire
working range.
The boiler must be set during installation by qualified personnel. Other minor modifications can be made by
the user to improve the level of comfort: the compensation curve can in fact be modified by accessing the
operating menu with the button and scrolling the menu, again using the button, to parameter 9.
Theset compensation curve is displayed(referto graph below). Pressingoneofthe buttons thedisplay
starts to flash; use the buttons to set the required value. To activate the new curve, press the button
. To cancel the setting, do not press the button, and press the button .
If the ambient temperature is lower than the required value, it is suggested to set a higher curve, and vice-
versa. Proceed with single unit increments or decreases, and check the results in the room.
Compensation curve

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2. INSTALLATION
2.1 General Instructions
Gas Safety (Installation & Use) Regulations: 1996
In the interest of safety, it is the law that all gas appliances are installed by a competent person in accordance
with the above Regulations, Building Regulations/Building Standards Scotland, Codes of Practice, current
I.E.E. Regulations and the byelaws of the Local Water Undertaking. Failure to comply with the Regulations
may lead to prosecution; it is your responsibility to ensure that the law is complied with.
N.B. For Northern Ireland the rules in force apply.
IMPORTANT: If the boiler is to be fitted in a timber framed building it should be fitted in accordance with
the Institute of Gas Engineers document IGE/UP/7. If in doubt advice should be sought from the Local
Supplier.
2.2 Positioning and wall mounting
The place of installation must be free of flammable objects or materials, corrosive gas, dust or volatile
substances. The environment must be dry and not exposed to rain, snow or frost.
Theinstallation of theECONCEPTmust be onasuitable non-combustibleloadbearing wall whichwill provide
an adequate fixing for the boiler mounting bracket assembly.
The location should be in an area where the water pipes will
not be subjected to frost conditions. In siting the boiler the
following limitations must be observed.
The boiler may be installed in any room or internal space,
although particular attention is drawn to the requirements of
the current I.E.E. wiring regulations 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 internal space containing a bath or shower.
Wherearoom sealedapplianceis installedina roomcontaining
a bath or shower any electrical switch or appliance control
utilising mains electricity must be situated so that it cannot be
touched by a person using the bath or shower.
The boiler is supplied ready for wall-hung installation. The
rear frame of the appliance has a series of slots for fastening
itto the wall,using screws withmetalwall plugs. Thefastening
to the wall must provide stable and effective support of the
appliance.
If the appliance is enclosed in a cabinet or alongside another
appliance, space must be allowed for normal maintenance
operations. Fig. 2 shows the minimum and recommended
space to be left free around the appliance.
WARNING!! This appliance must be installed in a
roomwithsufficientventilation,toavoiddangerous
conditions arising in the event of, even minor, gas
leaks. These safety standards are imposed by the
EEC Directive no. 09/396 for all gas appliances,
including the so-called sealed appliances.
For further instruction concerning devices
installation in cascade, please refer to the related
paragraph.
A A
B
D
C
Fig. 2
> 50 cm
Minimum Recommended
A
B
D
5 cm
1,5 cm
(from any openable panel)
15 cm
30 cm
C15 cm 20 cm
5 cm

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Fig. 3
50 120 145 145 120 50
1 2 3 4 5
6
1 CH flow
2 DHW flow
3 Gas inlet
4 DHW return
5 CH return
6 Safety valve
2.3 Connection to the hydraulic system
Make the connections to the corresponding couplings, according to the positions indicated in Fig. 3.
The discharge of the safety valve must be
connected to a funnel or collection pipe, to
discarge against a wall approx 300mm from
ground level.
Make the connections to the boiler so as its
internal pipes are not subject to stress.
Note: Caution must be taken to ensure the
discarge pipe cannot cause damage to
personsenpropertyintheeventofdischarge.
The appliance is not supplied with an
expansionvessel, andtherefore such
device must be connected by the
installer. Please note that the
pressure in the system, when cold,
must be between 0.5 and 1 bar.
Water treatment
If water treatment is used Ferroli Limited
recommend only the use of Fernox or Sentinel water treatment products, which must be used in accordance
with the manufacturers instructions. For further information contact:
Feronx Manufacturing Co. LTD. Sentinel Division
Tandern house, Marlowe way Betz Dearborn LTD
Croydon, surrey, CRO 4YS Widnes, Cheshire WA8 8ND
Tel: [phone] Tel: [phone]
Note:
•If the boiler is installed in an existing system any unsuitable additives must be removed by thorough
cleasing. All systems should be cleansed according to B.S. 7593.
•In hard water areas treatment to prevent lime scale may be necessary.
•It is important that the correct concentration of the water treatment product is maintained in
accordance with the manufacturers instructions.
Water System
Note The boiler is designed for sealed systems only and must NOT be used on open vented systems.
Central Heating
Detailed recommendations are given in BS6798, BS5449, BS6700 and CP342 Part 2. Pipework not forming
part of the useful heating surface should be insulated to prevent any heat losses or possible freezing (i.e. in
roof spaces or ventilated underfloor spaces). Drain taps should be positioned at the lowest point of the
system in accessible locations to permit the whole system to be drained down. The drain taps should be in
accordance with BS2879. Copper tubing to BS2871, Part 1 is recommended for water carrying pipework.
Pipework in horizontal runs should have a gradient where possible to facilitate the removal of air. Ensure that
the boiler heat exchanger is not a natural point for air collection.

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a
aa
a
aaa
Kit 1KWMH17A
Cylinder not supplied
Fig. 4
DHW calorifier connection(Optional kit 1KWMH17A)
The optional kit 1KWMH17A is available for connection
with an external cylinder. The kit, which includes circulator,
cylinderfeelerandhydraulicpipefittings,hastobemounted
inside the cylinder, according with instruction contained in
the kit itself. Then the connections have to be joined to the
cylinder.
2.4 Connection to the gas system
If necessary the local Gas supplier should be consulted, at
the installation planning stage, in order to establish the
availability of an adequate supply of gas.
An existing service pipe must not be used without prior
consultation with the Local Gas supplier.
A gas meter can only be connected by the Local Gas
supplier, or by a Local Gas suppliers Contractor.
Installation pipes should be fitted in accordance with
BS6891.
Appliance inlet working pressure must be 20mbar MINIMUM, for NG and 37 mbar minimum for LPG.
Pipework from the meter to the boiler must be of an adequate size.
Do not use pipes of a smaller size than the boiler inlet gas connection.
Thecompleteinstallation must be tested for gas soundness and purged asdescribedinBS6981. All pipework
must be adequately supported. An isolating gas valve should be fitted on the boiler gas inlet. Please wait
10 minutes when lighting from cold before checking gas rate. Gas pressures should be checked after the
boiler has operated for 10 minutes to ensure thermal equilibrium.
Make Up Water
Provision must be made for replacing water lost from the sealed system. Reference should be made to
BS6798, for methods of filling and making up sealed systems. There must be no direct connection between
the boiler's central heating system and the mains water supply. The use of mains water to charge and
pressurise the system directly, is conditional upon the Local Water Byelaws. Again any such connection must
be disconnected after use.
Always connect and filling device to the return pipework

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2.5 Electrical connections
Power supply
The boiler must be connected to a single-phase, 230 Volt-50 Hz power line, with max 3A fuses fitted between
boiler and the line, as well as a double pole switch (ON/OFF) with contacts whose opening is at least 3 mm.
The boiler must always be properly earthed.
When electrically connecting the boiler to an electrical system with live and neutral, THE POLARITY MUST
BE RESPECTED (LIVE: brown wire / NEUTRAL: blue wire / EARTH: yellow-green). Note: If replacing the
electrical power cable, use only the “HAR H05 VV-F”cable, 3x0.75 mm2, with a maximum external diameter
of 8 mm.
Room thermostat, external unit and auxiliary controls
Below the electrical control box is a multipolar
terminal block, for connecting:
•Room thermostat (3-4)
WARNING: THE ROOM THERMOSTAT
MUST NOT HAVE LIVE CONTACTS. CON-
NECTING 230V TO TERMINALS (3-4) WILL
CAUSE IRREVERSIBLE DAMAGE TO THE
ELECTRONIC BOARD.
When connecting a room thermostat with
daily or weekly program, or a timer, avoid
taking the power supply to these devices
from their switch contacts. Their power
supply must derive from a direct connec-
tion to the mains or using batteries, de-
pending on the type of device.
Thisappliance must use a roomthermostat,
for increased comfort and greater energy
savings.
•External temperature probe (7-8)
With the probe (optional) connected, the
boiler works in outside compensation tem-
peraturemode, dependingonthe compen-
sation curve settled (ref. 1.4). If no probe is
connected, the boiler works in standard
mode and setting of a compensation curve
(parameter 9 of menu) is ignored by the
control system.
•Remote control (9-10), for remote control
and regulation of the boiler, with weekly
chronothermostat and climatic regulation
functions.
•Optional DHW storage probe to be fitted
to11-12 otherwiseleave 10K-1,8K resistors
fitted(removing resistorswill createa boiler
malfunction + result in no C. heating or hot
water production .
Fig. 10 a
Fig. 5
EBA
23456789101112
F
A Room thermostat
B Eco/Comfort selection switch
E Remote control
F DHW storage sensor Fig. 6

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23456789101012
Econcept 50 A connection block
EF
LHE
230/50 Vac supply
fused @ 3amp.
XY
room thermostat
cyl thermostat
X - CH circuit -- MUST be volt free E - Cascade unit option
Y - DHW circuit -- MUST be volt free F - DHW storage sensor
they must NOT be connected to any external power source
programmer
Fig. 7
Suggested conection for storage cylinder-:
Positioning the external probe
The external probe is best installed on a wall
facing north, north-west or which borders
the majority of the main living area. The
probe must never be exposed to the early
morning sun, and, in general and where
possible, must not receive direct sunlight; if
necessary, it should be shielded.
The probe must not in any case be fitted near
windows, doors, ventilation openings, flues,
orsourcesofheatwhichmayalterthereading.
Note: The maximum length allowed for
the electrical cable connecting the
boiler to the external probe is 50 m.
A common two-lead cable can also
be used.
H
1/2H
1/2H
H
N
N W
Fig. 8

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2.6 Flues
Econcept is a type-C boiler with forced draught, the air inlet and the flue gas outlet must be connected to
one of the exhaust–intake systems indicated as follows. Using the tables and the methods of calculation
described, first verify, before installation, that the flues do not exceed the maximum allowed length.
Connection to concentric pipes
The total length in linear metres of the concentric pipes must not exceed the maximum length indicated in
the first table below. The second table shows the reductions to be used for any bends in the pipes, excluding
the initial one.
Please consider that the horizontal concentric piping must have a slope towards the boiler of at least 3 mm/m ,
to allow the condensation which forms in the flues to flow back to the boiler, and avoid external dripping.
The concentric pipes should be sealed with the relative pipe coupling seal at the points of coupling to the
wall. The external piping must protrude from the wall between 10 and 60 mm.
Fig. 9
Maximum allowable pipe length
Econcept 50 A
Reducers for concentric bends
90°concentric bend
45°concentric bend
0,5 m
0,25 m
Ø125/80 mm concentric
4 m
Vertical
4 m
Horizontal*

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Two pipe flue system
The separate Ø80 pipes for air intake and flue gas exhaust can be connected directly to the boiler, as shown
in Fig. 10.
Upon request, a wide range of pipes, bends and accessories can be supplied. For the various components,
refer to tables 1-2 or to the flue accessory catalogue.
A simple calculation can be performed to ensure that the maximum allowable pipe length is not exceeded:
1For each component, table 1-2 lists the loss of pressure in “equivalent air-metres”, depending on
the position of installation of the component itself (air intake or flue gas exhaust, vertical or
horizontal).
The loss is called “equivalent length”as it relates to the loss of length in the flue system due to
fuctional losses of bends. For example, a 90°Ø80 bend in flue gas exhaust has a loss equivalent to
2.5 air-metres, that is equal to 2.5 linear metres of flue pipe.
2Once having completely defined the layout of the double flue system, add the losses in equivalent-
metres, according to the position of installation of all the components and accessories in the system
3Check that the total loss calculated is less than or equal to 45 m equivalent metres, that is the
maximum allowable for this model of boiler.
Fig. 10

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Table of losses for piping and accessories
KWMA86A
KWMA85A
KWMA84U
Air Flue
Vertical Horizontal Vertical Horizontal
KWMA82A
KWMA38A •0,50 m
KWMA83A •1,00 m
Description
Tubo Ø 80
male-female
Male-female
bend 90°Ø 80 mm
Description
Airwall terminal
products
of
combustion Ø80 mm
Air
t erminal of inlet
prote c tion Ø80 mm
Outlet flue air inlet
for connection with
split end Ø80 mm
0,5
1
0,5
1
0,8
1,6
1
2
1,5 2,0
Reduction
KWMA55U
5
2
3
Air Flue
Vertical Horizontal Vertical Horizontal
Reduction
12
Condensate flue
outlet
Accessories Ø 80 Accessories Ø 80
Tab. 2
The loss values listed refer to original FERROLI
pipes and accessories
Tab. 1

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Fig. 11
Ref.
1
2
3
N°Pieces
12
12
1
Vertical air pipe
Vertical flue pipe
Flue terminal
Description Length
o loss
19,2 m
12,0 m
12,0 m
43,2 mTotal
12 m
12
3
Example of how to calculate the connection of two separate pipes, max flue length: 45 metres
The flue and air pipes must be sloped towards the boiler by at least 3%.

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Terminal Position
Fig. 12
P
D, E
Q
Q
l
BC
A
G
F
L
J
HH
K
N
N
MM
Q
Directly below an opening, air brick, (0-7 kW)
opening windows, etc. (>7-14 kW)
(>14-32 kW)
(>32-70 kW)
Above an opening, air brick, (0-7 kW)
opening windows, etc. (>7-14 kW)
(>14-32 kW)
(>32-70 kW)
Horizontally to an opening, air brick, (0-7 kW)
opening windows, etc. (>7-14 kW)
(>14-32 kW)
(>32-70 kW)
Below gutters, soil pipes or drain pipes
Below eaves
Below balconies or car port roof
From a vertical drain pipe or soil pipe
From an internal or external corner
Above ground roof or balcony level
From a surface facing the terminal
(also see 6.1.2)
From a terminal facing the terminal
From an opening in the car port ( e.g. door,
window) into the dwelling
Vertically from a terminal on the same wall
Horizontally from a terminal on the same wall
From the wall on which the terminal is mounted
From a vertical structure on the roof
Above intersection with roof
Dimensions Terminal position
(kW input expressed in net)
Balanced flues room
sealed
Fanned
draught
Aa300 mm
Ba300 mm
Ca300 mm
D75 mm
E200 mm
F200 mm
G150 mmb
H300 mm
I300 mm
J600 mm
K1200 mm
L1200 mm
M1500 mm
N300 mm
ON/A
PN/A
QN/A
NOTE N/A = Not applicable
a
I n addition, the terminal should not be nearer than 150 mm (fanned draucht) or 300 mm (natural draught) to an opening in the building fabric
formed for the purpose of accommodating a built-in element such as a window frame, (see Figure C2). Separation distances are linked to the
rated heat inputs as shown.
Minimum dimensions of flue terminal positions

Supplied By www.heating spares.co Tel. [phone]
Econcept 50 A
19
2.7 Condensation discharge connection
Boiler is provided with an internal watertrap for
the condensation discharge. Fit the inspection
bowl "A" and the flexible tube "B". Fill the
siphon with 0,5 l. of water and connect the
flexibletube to the drainingsystem.If this is not
possible the trap will fill upon the boiler running
forapprox20 mins, (care should be taken notto
brearanyfumisindischargedfromthe condense
hose due to insufficient water being present in
the trap).
Fig. 13
Fig. 14
Connect to internal waste system or soakaway.
Using plastic not copper.

Supplied By www.heating spares.co Tel. [phone]
Econcept 50 A
20
2.8 Modular installation
Can be used as a single unit or for modular installation. If the output required from the system exceeds 44,9
kW, two or more Econcept 50 boilers can be connected in a modular system (or cascade), as shown as an
example in figure.
It is necessary to meet all the requirements imposed by standards and laws in force applicable to this
generator “equivalent”of total potentiality N x 44.9 kW.
Ventilation required via 80mm Ferroli piping (see page 16).
For connection in cascade, please observe the following instruction:
Hydraulic connection
•Connect all units to a double collector hydraulic circuit (one collector for flow one for return) or single-pipe,
utilising isolation valves which permit the isolation at each boiler in case of maintenance. Distance between
module and module (D1) must be lower than 0.5 metres.
•Provide safety and protection device prescribed by standards in force for modular boilers complete of N
x 44.9 kW capacity. They must be installed on the flow circuit pipe, immediately below last module, within
a distance not higher than 0.5 metres.
L1 max = 1000 mm
L2 max = 3000 mm
Fig. 15