ACV N2 CONDENS Assembly instructions

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N 2 Condens : 664Y5000 • C
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21.8 kW
N2 Condens
INSTALLATION, OPERATING AND
MAINTENANCE INSTRUCTIONS

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2N 2 Condens : 664Y5000 • C
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TABLE OF CONTENTS
GENERAL RECOMMENDATIONS .................................................................................. 4
USER GUIDE................................................................................................................................. 5
APPLIANCE DESCRIPTION................................................................................................. 6
TECHNICAL CHARACTERISTICS ................................................................................... 8
Electrical characteristics ..............................................................................................................8
Dimensional characteristics........................................................................................................9
Combustion characteristics......................................................................................................11
Hydraulic characteristics .......................................................................................................... 12
Characteristics of flue connection........................................................................................ 13
Operating limits.......................................................................................................................... 14
INSTALLATION .......................................................................................................................15
Contents included in delivery................................................................................................ 15
How to move the boiler........................................................................................................... 16
Tools required for installation ............................................................................................... 17
Installation instructions............................................................................................................. 17
Recommendations for preventing corrosion and scaling............................................. 19
Boiler preparation...................................................................................................................... 21
Fitting the burner .......................................................................................................................23
Electrical connection ................................................................................................................. 24
Flue connection...........................................................................................................................25
Hydraulic connections ..............................................................................................................26
Connection to a hot water tank.............................................................................................27
Fuel oil connection.....................................................................................................................28

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N 2 Condens : 664Y5000 • C
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TABLE OF CONTENTS
COMMISSIONING..................................................................................................................29
Commissioning safety instructions.......................................................................................29
Tools required for commissioning........................................................................................29
Checks before bringing into service....................................................................................29
Preliminary filling of the heating system ............................................................................30
Starting the boiler ......................................................................................................................30
Full flush of the heating system .............................................................................................30
MAINTENANCE.......................................................................................................................31
Safety instructions for maintenance..................................................................................... 31
Regular check............................................................................................................................... 31
Cleaning the combustion assembly ..................................................................................... 32
Inspection of safety devices ................................................................................................... 33
Draining of the boiler................................................................................................................ 33
Commissioning after maintenance ....................................................................................... 33
DECLARATION OF CONFORMITY - CE ...................................................................34
ROYAL DECREE DECLARATION OF CONFORMITY 17/07/2009 - BE .....35

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4N 2 Condens : 664Y5000 • C
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GENERAL RECOMMENDATIONS
These instructions contain important information necessary for the installation,
commissioning and maintenance of the boiler.
These instructions must be given to the user who should keep them in a safe place after
carefully reading them.
Important safety recommendations
It is strictly prohibited to modify the inside of the appliance in any way, without
the manufacturer's prior written agreement.
The appliance must be installed by a qualified engineer, in accordance with the local
regulations in force.
The installation must comply with the instructions contained in this manual as well
as the local regulations governing installations.
Failure to comply with the instructions of this manual may lead to personal injury
or a risk of environmental pollution.
The manufacturer does not accept any liability for any damage caused as a result
of incorrect installation or in the event of using appliances or accessories that are not
specified by the manufacturer.
Important recommendations for the correct operation of the appliance
In order to ensure the appliance operates correctly, it is important to have it serviced
each year by an approved contractor/installer.
If there is a problem please contact your installer for advice.
Faulty parts must only be replaced with genuine parts.
We accept no liability in the event of damage caused by failure to comply with the
instructions appearing in this technical manual.

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USER'S GUIDE
1. Boiler on/off switch
2. Summer/winter switch (is used to turn the heating circulator on and off).
3. Safety warning indicator (lights up when the temperature of the flue gas or water of the
primary system is too high).
4. Thermo-pressure gauge (displays the boiler temperature and the pressure within the
primary system).
5. Manual reset safety thermostat (enables the boiler to be reset after overheating of the
primary water system).
6. Thermostat control (allows the boiler temperature to be set between 60°C for the minimum
position and 90°C for the maximum position).
Important recommendations for the correct operation of the appliance
If the boiler switches frequently to safety, contact your installer.
If your boiler is connected to a Domestic Hot Water (DHW) heating tank, make sure
that the temperature of the heating thermostat is higher than that of the DHW
thermostat in order to guarantee optimal operating conditions.

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6N 2 Condens : 664Y5000 • C
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The N2 Condens condensing fuel oil boiler is a heat generator that enables the water for the
central heating and DHW heater to be reheated (if the latter is connected to the boiler).
Key
1. Condenser
2. Flue outlet
3. Vent for measuring flue gas temperatures
4. Turbulators (6 parts)
5. Blue flame oil burner
6. Burner chamber plate with insulation brick
7. Boiler body
8. Thermal insulation
APPLIANCE DESCRIPTION

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APPLIANCE DESCRIPTION
9. Minimum thermostat
10. Heating flow
11. Heating return
12. Removable panels
13. Condensate trap
14. Condensate exhaust hose
15. Electrical connection socket of the boiler
16. Connection socket of flue gas safety thermostat (optional)
17. Drain valve

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Br B
Bk G
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Bk G
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Y/Gr
BR R
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G V Gr B
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Y/Gr
Y/Gr
Bk
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TECHNICAL CHARACTERISTICS
ELECTRICAL CHARACTERISTICS
Main electrical characteristics N2 Condens
Nominal voltage V~ 230
Nominal frequency Hz 50
Nominal intensity A 6
Wiring diagram
Key
1. On/Off switch
2. Minimum thermostat 45°C
3. Summer/winter switch
4. Safety thermostat
5. Burner
6. Safety warning indicator
7. Room thermostat (optional)
8. Installation heating pump (not provided)
9. Control thermostat of the boiler
10. Flue gas safety thermostat for flue pipe
(optional)
B : Blue
Bk : Black
Br : Brown
G : Grey
Gr : Green
R : Red
V : Violet
Y : Yellow
Y/Gr : Yellow/Green

760 mm
B
355 mm
650 mm
A
50 mm
235 mm
80 mm
105 mm
C
86 mm
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N 2 Condens : 664Y5000 • C
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TECHNICAL CHARACTERISTICS
DIMENSIONAL CHARACTERISTICS
Boiler dimensions N2 Condens
A= Width mm 470
B= Height mm 840
C= Depth mm 925
Volume of the combustion chamber dm342.3
Combustion chamber
Height mm 295
Width mm 330
Depth mm 435
Empty weight kg 155

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TECHNICAL CHARACTERISTICS
Overall dimensions of boiler N2 Condens
Recommended Minimum
A (mm) 800 650
B (mm) 1000 900
C (mm) 600 400
D (mm) 150 100
The two lateral rear panels allow access to the components inside the boiler from the left or right hand side.