ACV N1 ECO Manual

A1005170 - 664Y7700 • B

INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS

for the Installer and the User

eco

N1 - N2 - N3

N1 - N2 - N3 eco : A1005170 - 664Y7700 • B

TABLE OF CONTENTS

GENERAL RECOMMENDATIONS....................................................................................3

USER’S GUIDE...................................................................................................................4

Meaning of Symbols ....................................................................................................................................................................4

Boiler Marking................................................................................................................................................................................5

Control Panel..................................................................................................................................................................................6

What to Check on a Regular Basis ..........................................................................................................................................6

APPLIANCE DESCRIPTION..............................................................................................7

N eco Boiler Description.............................................................................................................................................................7

N eco Boiler overview .................................................................................................................................................................7

BURNER DESCRIPTION & CHARACTERISTICS .............................................................8

Burner Description.......................................................................................................................................................................8

TECHNICAL CHARACTERISTICS....................................................................................9

Dimensions .....................................................................................................................................................................................9

Clearance .........................................................................................................................................................................................9

Combustion characteristics......................................................................................................................................................9

Maximum Operating Conditions............................................................................................................................................9

Recommendations for the Prevention of Corrosion and Scaling in Heating Systems.....................................10

N eco Chimney connection characteristics ......................................................................................................................12

Electrical Characteristics .........................................................................................................................................................13

INSTALL ATION ..............................................................................................................14

Safety Instructions for the Installation ...............................................................................................................................14

Package contents........................................................................................................................................................................14

Tools Required for the Installation.......................................................................................................................................14

Burner installation......................................................................................................................................................................15

Oil Connection.............................................................................................................................................................................15

Electrical Connection................................................................................................................................................................16

Recommendations for Hydraulic Connections...............................................................................................................17

Heating Connection ..................................................................................................................................................................17

STARTING UP .................................................................................................................18

Safety Instructions for Starting up.......................................................................................................................................18

Tools Required for Starting up...............................................................................................................................................18

Checks before Starting up.......................................................................................................................................................18

Filling the Heating Circuit........................................................................................................................................................18

Starting up the Boiler ................................................................................................................................................................19

Combustion adjustment..........................................................................................................................................................19

MAINTENANCE..............................................................................................................20

Safety Instructions for the Boiler Maintenance.............................................................................................................. 20

Tools Required for Maintenance.......................................................................................................................................... 20

Periodic Boiler Maintenance Tasks...................................................................................................................................... 20

Boiler shut down for Maintenance...................................................................................................................................... 20

Draining the Heating Circuit of the Boiler.........................................................................................................................21

Cleaning the Combustion Chamber....................................................................................................................................21

Restarting after Maintenance................................................................................................................................................21

SERVICE LOG ..................................................................................................................22

DECLARATION OF CONFORMITY...............................................................................23

ECODESIGN DATA..........................................................................................................23

PRODUCT FICHE............................................................................................................24

NOTE

This manual contains important information with respect to the installation, the starting up and the

maintenance of the appliance.

This manual must be provided to the user, who will read it carefully and keep it in a safe place.

We accept no liability should any damage result from the failure to comply with theinstructions

contained in this technical manual.

Essential recommendations for safety

• It is prohibited to carry out any modifications to the appliance without the

manufacturer’s prior and written agreement.

• The product must be installed by a qualified engineer, in accordance with

applicable local standards and regulations.

• The installation must comply with the instructions contained in this manual and

with the standards and regulations applicable to heating systems.

• Failure to comply with the instructions in this manual could result in personal

injury or a risk of environmental pollution.

• The manufacturer declines all liability for any damage caused as a result of

incorrect installation or in the event of the use of appliances or accessories that are

not specified by the manufacturer.

Essential recommendations for the correct operation of the appliance

• In order to ensure that the appliance operates correctly, it is essential to have it

serviced by a certified installer or maintenance contractor every year.

• In case of anomaly, please call your service engineer.

• Faulty parts may only be replaced by genuine factory parts.

General remarks

• The availability of certain models as well as their accessories may vary according to

markets.

• The manufacturer reserves the right to change the technical characteristics and

features of its products without prior notice. Please check for an updated version

of this manual in the documentation page on the website www.acv.com.

• In spite of the strict quality standards that ACV applies to its appliances during

production, inspection and transport, faults may occur. Please immediately notify

your approved installer of any faults.

DONOT STORE ANY FLAMMABLE OR CORROSIVE PRODUCTS, PAINT,

SOLVENTS, SALTS, CHLORIDE PRODUCTS AND OTHER DETERGENT PRODUCTS

NEAR THE APPLIANCE.

THIS APPLIANCE CAN BE USED BY CHILDREN AGED FROM 8 YEARS OLD

AND ABOVE AND PERSONS WITH REDUCED PHYSICAL, SENSORY OR MENTAL

CAPABILITIES OR LACK OF EXPERIENCE AND KNOWLEDGE, IF THEY HAVE

BEEN GIVEN SUPERVISION OR INSTRUCTION CONCERNING THE USE OF THE

APPLIANCE IN ASAFE WAY AND UNDERSTAND THE HAZARDS INVOLVED.

CLEANING AND USER MAINTENANCE SHALL NOT BE PERFORMED BY

CHILDREN WITHOUT SUPERVISION.

CHILDREN SHALL NOT PLAY WITH THE APPLIANCE

BYPRODUCT OF ANY OIL FIRED APPLIANCE IS CARBON MONOXIDE. ACV

RECOMMENDS THE INSTALLATION OF AMINIMUM OF TWO (2) HARD-

WIRED CARBON MONOXIDE DETECTORS WITH AN ALARM AND BATTERY

BACK-UP; ONE IN THE MECHANICAL ROOM WHERE THE BOILER IS LOCATED

AND ANOTHER INSTALLED IN THE LIVING AREA OUTSIDE THE BEDROOM(S)

FOR ALL INSTALLATIONS.

GENERAL SAFETY INSTRUCTIONS FOR OIL APPLIANCES

N1 - N2 - N3 eco : A1005170 - 664Y7700 • B

GENERAL RECOMMENDATIONS

N1 - N2 - N3 eco : A1005170 - 664Y7700 • B

USER’S GUIDE

MEANING OF SYMBOLS

Symbols in the

manual Meaning

Essential recommendation for safety (of persons and equipment)

Essential recommendation for electrical safety (electrical hazard)

Essential recommendation for the correct operation of the appliance or the

system

General remark

Safety valve connected to the sewage system

Connection to the sewage system

Symbols on the

packaging Meaning

Fragile

Keep dry

This way up

Hand truck or pallet truck required for transport

Symbols on the

appliance Meaning

Primary circuit

Connection to the sewage system

Electricity

N1 - N2 - N3 eco : A1005170 - 664Y7700 • B

USER’S GUIDE

The part number (Code) and serial number (N°) of the appliance are indicated on its rating

plate and must be provided to ACV in case of warranty claim. Failure to do so will make the

claim void.

BOILER MARKING

Location: At the back of the appliance

N1 - N2 - N3 eco : A1005170 - 664Y7700 • B

USER’S GUIDE

CONTROL PANEL

3 5 6

1. Boiler ON/OFF master switch

2. Summer/winter switch - used to turn the heating pump on or o.

3. Burner safety cutout warning indicator - lights when the primary circuit water temperature is too

high.

4. Temperature and pressure gauge - indicates both the temperature of the boiler and the pressure

within the primary circuit.

5. Manual reset safety thermostat - allows to reset the boiler after a primary circuit uid overheat.

6. Control thermostat - allows to adjust the boiler temperature between 60°C (min. position) and

90°C (max. position).

WHAT TO CHECK ON A REGULAR BASIS

Essential recommendations for the correct operation of the appliance

ACV recommends to check the system at least every 6 months as follows:

• Check that the system water pressure is at least 1 bar when cold. If the pressure drops

below 0.7 bar, the built-in pressure sensor blocks the appliance until the pressure

exceeds 1.2 bar.

• If it is required to top up the system to maintain the minimum recommended water

pressure, always turn the appliance off and only add small amounts of water at a time.

If a large amount of cold water is added in a hot boiler, the boiler can be damaged

definitively.

• If the system needs to be refilled repeatedly with water, please contact your installer.

• Check that there is no water on the floor under the boiler. If there is, please call your

installer.

N1 - N2 - N3 eco : A1005170 - 664Y7700 • B

APPLIANCE DESCRIPTION

N ECO BOILER DESCRIPTION

The N eco series boilers are oil appliances, that are certied in accordance with European standards

(EN15034). They also bear the Belgian label“OPTIMAZ” (oil boiler).

The N eco series are single-circuit (heating) boilers providing a heating output range from 25 to 43 kW.

Three dierent models are available:

• N1 eco model (provided with BMV3 burner) maximum output: 25 kW.

• N2 eco model (provided with BMV4 burner) maximum output: 30 kW.

• N3 eco model (provided with BMV5 burner) maximum output: 43 kW.

The N eco boilers can be directly connected to the ue pipe, using a B23-type connection

Easy control, guaranteed safety - The heating circuit water temperature is adjusted through the control

thermostat, whose bulb is located next to the outlet section of the boiler. A manual reset safety thermo-

stat stops the burner if the primary circuit uid temperature reaches 103°C. A minimum thermostat, tted

at the rear of the boiler and preset at 45°C, delays the heating pump activation. This prevents the risks of

corrosion of the combustion chamber.

Production of domestic hot water - The N eco boilers can be combined with any ACV hot water production

tank.

Operation of the heating pump

The heating pump is controlled by the minimum thermostat tted at the back of the boiler. It is preset at

45°C, which delays the operation of the heating pump at burner start up and protects the combustion

chamber against corrosion.

Gauge pressure of the heating system

The installation must be tted with a safety valve set at 3 bar.

Make sure that the system water is always under pressure. When the system is cold and the air has been

bled, the pressure gauge must indicate a pressure between 1 and 1.5 bar depending on the building

height.

1. Control panel

2. Heat exchanger

3. Front panel

4. Heating body

5. Burner chamber plate

6. Oil burner (delivered with appliance)

7. Heating circuit supply

8. Electrical supply connection plug of the boiler

9. Heating circuit return

10. Flue pipe connection

11. Minimum thermostat set at 45°C (T.O.D.)

12. Connection for draining valve

N ECO BOILER OVERVIEW

7 8

2 5

N1 - N2 - N3 eco : A1005170 - 664Y7700 • B

BURNER DESCRIPTION & CHARACTERISTICS

BURNER DESCRIPTION

The BMV burner model is a modern generation ame burner. This burner construction oers extensive

energy saving operation with very low emissions.

Refer to the burner technical manual for installation, operation and maintenance instructions and for the

technical characteristics.

Key

1. Motor

2. Oil pump with lter

3. Photocell (not shown)

4. Automatic oil ring unit

5. Fan

6. Air adjustment regulation

7. Burner pipe and recirculation tube

8. Bae plate set screw

9. Pressure measurement tting

10. Burner electrical supply connection

N1 - N2 - N3 eco : A1005170 - 664Y7700 • B

TECHNICAL CHARACTERISTICS

DIMENSIONS

Boiler Dimensions N1 eco N2 eco N3 eco

A mm 470 470 530

B mm 700 765 805

Cmm 565 565 655

D (∅of ue pipe) mm 130 130 150

E mm 550 615 645

F mm 445 510 550

G mm 260 260 260

Heating Connection [F] “ 1 1 1.1/4

Drained weight Kg 108 122 157

Capacity (primary) L 31 37 53

CLEARANCE

Boiler Clearance N1 - N2 - N3 eco

Front (mm) Recommended 600

Minimum 500

Rear (mm) Recommended 200

Minimum 150

Sides (mm) Recommended 150

Minimum 100

Top (mm) Recommended 400

Minimum 300

A G

Ø D

COMBUSTION CHARACTERISTICS

Main Characteristics N1 eco N2 eco N3 eco

Input (PCI) max kW 25.6 31.3 45.1

Output at 100% (80/60°C) kW 24.7 30.3 43.4

Eciency at 100% (80/60°C) % 96.5 96.7 96.2

Eciency at 30% load (EN677) % 98.5 97.9 97.2

NOx (Class 5) Weighted mg/kWh 110 110 110

CO Max. output ppm 19 19 19

CO2 Max. output %CO2 13 13 14

Temp of ue gases

Normal °C 120 120 120

Max. °C 130 130 135

MAXIMUM OPERATING CONDITIONS

Maximum Service Pressure (tank full of water) *

- Primary circuit : ....................................................................................................................3 bar

Maximum Operating temperatures

- Maximum temperature (primary) : ...............................................................................90°C

Water Quality

See "Recommendations for the Prevention of Corrosion and Scaling in Heating Systems" on the following

page.

Oil Quality

• Low Sulfur oil (50 ppm)

• Standard oil (2000 ppm)

• Bio oil at 7% methyl esters of fatty acids.

* The hydraulics of the boiler have been tested according to EN-15502, and the boiler is classied as a pressure class 3 appliance,

according to EN-15502.

RECOMMENDATIONS FOR THE PREVENTION OF CORROSION AND

SCALING IN HEATING SYSTEMS

How oxygen and carbonates can affect the heating system

Oxygen and dissolved gasses in the water of the primary circuit contribute to the oxi-

dation and the corrosion of the system components that are made of ordinary steel

(radiators, ...). The resulting sludge is then deposited in the appliance exchanger.

The combination of carbonates and carbon dioxide in the water results in the formation of scale

on the hot surfaces of the installation, including those of the appliance exchanger.

These deposits in the heat exchanger reduce the water ow rate and thermally insulate the ex-

change surfaces, which is likely to damage them.

Sources of oxygen and carbonates in the heating circuit

The primary circuit is a closed circuit; the water it contains is therefore isolated from the mains

water. When maintaining the system or lling up the circuit, water renewal results in the addition

of oxygen and carbonates in the primary circuit. The larger the water volume in the system, the

larger the addition.

Hydraulic components without an oxygen barrier (PE pipes and connections) admit oxygen into

the system.

Prevention Principles

1. Clean the existing system before installing a new appliance

- Before the system is lled, it must be cleaned in accordance with standard EN14336.

Chemical cleaning agents can be used.

- If the circuit is in bad condition, or the cleaning operation was not efficient, or the volume of

water in the installation is substantial (e.g. cascade system), it is recommended to separate

the appliance from the heating circuit using a plate-to-plate exchanger or equivalent. In

that case, it is recommended to install a hydrocyclone or magnetic filter on the installation

side.

2. Limit the fill frequency

- Limit fill operations. In order to check the quantity of water that has been added into the

system, a water meter can be installed on the filling line of the primary circuit.

- Automatic filling systems are not recommended unless the fill frequency is monitored and

the scale and corrosion inhibitor remain at the correct levels.

- If your installation requires frequent water refilling, make sure your system is free of water

leaks.

- Inhibitors may be used in accordance with standard EN 14868.

3. Limit the presence of oxygen and sludge in the water

- A deaerator (on the appliance flow line) combined with a dirt separator (upstream of the

appliance) must be installed according to the manufacturer's instructions.

- ACV recommends using additives that keep the oxygen in solution in the water, such as

Fernox (www.fernox.com) and Sentinel (www.sentinel-solutions.net) products.

- The additives must be used in accordance with the instructions issued by the manufacturer

of the water treatment product.

4. Limit the carbonate concentration in the water

- The fill water must be softened if its hardness is higher than 20° fH (11,2° dH).

- Check regularly the water hardness and enter the values in the service log.

- Water hardness table :

Water hardness °fH °dH mmolCa(HCO3)2 / l

Very soft 0 - 7 0 - 3.9 0 - 0.7

Soft 7 - 15 3.9 - 8.4 0.7 - 1.5

Fairly hard 15 - 25 8.4 - 14 1.5 - 2.5

Hard 25 - 42 14 - 23.5 2.5 - 4.2

Very hard > 42 > 23.5 > 4.2

5. Control the water parameters

- In addition to the oxygen and the water hardness, other parameters of the water must be

checked.

- Treat the water if the measured values are outside the range.

Acidity 6,6 < pH < 8,5

Conductivity < 400 μS/cm (at 25°C)

Chlorides < 125 mg/l

Iron < 0,5 mg/l

Copper < 0,1 mg/l

N1 - N2 - N3 eco : A1005170 - 664Y7700 • B

TECHNICAL CHARACTERISTICS

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