ACV uk Delta Pro S & Pro Pack INSTALLATION OPERATING AND SERVICING INSTRUCTIONS

Pro S & Pro Pack

delta

Installation, operating and
maintenance instructions

ENFRRU PL DE IT ES NL

EN • 1

Delta P ro S / Delta Pro Pac k : 664Y4900 • E

INDEX

ENFRRU PL DE IT ES NL

IMPORTANT NOTES 3

Who should read these instructions 3

Symbols 3

Recommendations 3

Certification 3

Important notes 3

DESCRIPTION 4

Working principle 4

Standard equipment 4

Optional equipment 4

Construction features 4

Description of the boiler 4

USER GUIDE 6

Use of the boiler 6

Domestic hot water connection 14

Heating connection 15

ACV burner oil supply 16

ACV burner gas supply 16

OPTIONAL CONTROLS 18

Installing a high or low temperature heating system with
Control Unit

BMR 31 OIL BURNER FEATURES 20

Description of the BMR 31 oil burner 20

BMR 31 oil burner settings 20

BMV OIL BURNER FEATURES 21

Description of the BMV oil burner 21

BMV oil burner settings 21

BG 2000S GAS BURNER FEATURES 22

18

Heating circuit pressure 6

Getting to know the control panel 6

Oil or gas burner lockout 7

TECHNICAL CHARACTERISTICS 8

General 8

Maximum operating conditions 8

General characteristics 8

Domestic hot water performance 8

Burner chamber plate for oil or blown gas burner 8

Dimensions 9

ELECTRICAL CONNECTION 10

Electrical connection of the boiler 10

INSTALLATION 11

Recommendations for the prevention of corrosion and scaling 11

ACV BG 2000-S premix burner 22

BG 2000-S gas burner settings 22

Gas categories 23

COMMISSIONING AND MAINTENANCE 25

Filling the hot water and heating circuits 25

Boiler commissioning 25

Recommendation 25

Boiler maintenance 25

Burner maintenance 25

Maintenance of safety devices 25

Draining of the boiler 25

Draining the heating circuit 25

Draining the DHW circuit 25

SPARE PARTS www.acv.com

Boiler room 12

Optional balanced flue connection kit 12

B23 flue connection 12

Type of flue connection 13

Flue connection accessories 15

Delta P ro S / Delta Pro Pac k : 664Y4900 • E

EN • 2

IMPORTANT NOTES

WHO SHOULD READ THESE INSTRUCTIONS

These instructions should be read by:

- the design engineer/consultant

- the user

- the installer

- the service engineer

SYMBOLS

Essential instruction for the correct
operation of the installation

Essential instruction for the safety of
persons and the environment

Electrocution hazard:
use a qualified technician

ENFRRU PL DE IT ES NL

• Before carrying out any work on the boiler, it is import ant to isolate the
electrical supply to the unit.

• The user must not attempt to gain access to the components inside the
boiler or the control panel.

• This appliance c an be used by children aged f rom 8 years and above and
persons with reduced physical, sensory or mental capabilities or lack
of experience and knowledge, only if they have been given supervision
or instruction concerning use of the appliance in a safe way and
understand the hazards involved.

• Children shall not play with the appliance.

• Cleaning and user maintenance shall not be made by children unless
they are aged from 8 years and above and supervised.

• This appliance is not intended for use by persons (including children)
with reduced physical, sensory or mental capabilities, unless used
under the super vision of a person responsible for their safety.

• Children should be supervised to ensure that they do not play with the
appliance.

CERTIFICATION

The products have received EC certification in accordance with the
standards in force in various countries (European Directives 92/42/EEC
"efficiency requirements", 2009/142/EC "appliances burning gaseous fuels").
These products have also been awarded the Belgian "H R+" (gas boiler) and
"OPTIMAZ" (oil boilers) labels.

Burn hazard

RECOMMENDATIONS

• Carefully read this manual before installing and bringing the boiler into
service.

• It is prohibited to modify the interior of the appliance in any way,
without the manufacturer’s prior written agreement.

• The boiler must be installed by a qualified engineer, in accordance with
the applicable local standards and codes.

• Failure to follow the instructions describing test operations and
procedures could result in personal injury or a risk of environmental
pollution.

• In order to ensure the appliance operates safely and correctly, it is
important to have it serviced by an approved contractor.

• If there is a problem please contact your contractor for advice.

• In spite of th e strict quality s tandards that ACV applies to i ts appliances
during production, inspection and transport, faults may occur. Please
notify your approved contractor immediately of any faults.

• Defective par ts can only be replaced with original factory parts. You
will find a list of spare parts and their ACV reference number at the end
of this manual.

IMPORTANT NOTES

IF YOU SMELL GAS:

- Isolate the gas supply immediately.

- Ventilate the room (Open the windows).

- Do not use electrical appliances and do not operate switches.

- Notif y your gas supplier and/or your installer immediately.

These instructions are an integral part of the equipment to which they relate
and must be left for the user.

The product is to be installed and serviced by qualified technicians, in
accordance with current regulations.

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.

The manufacturer reserves the right to change the technical

characteristics and features of its products without prior
notice.

The availability of certain models as well as their accessories

may vary according to markets.

• BG 2000-S gas burners are pre-adjusted in the factory for natural gas
[equivalent to G20].

• Specific regulation in Belgium:

The CO2, gas flow, air flow and air/gas supply parameters are adjusted

in the factory and cannot be changed in Belgium.

EN • 3

Delta P ro S / Delta Pro Pac k : 664Y4900 • E

DESCRIPTION

WORKING PRINCIPLE

ENFRRU PL DE IT ES NL

The Delta Pro boiler is a high performance hot water producer using indirect
heat transfer due to its Tank-in-Tank technology.

At the centre of the Delta Pro there is a stainless steel cylinder through
which the flue tubes pass. It is surrounded by a mild steel shell containing the
primary water (neutral fluid). The outer shell extends down to the combustion
chamber and also surrounds the flue gas tubes. The heat exchange surface is
therefore larger than that of traditional direct fired hot water boilers.

The gas or oil b urner heats the primary f luid which indirectly heat s the stainless
steel cylinder containing the hot water. As with all Tank-in-Tank systems, the
cylinder is corrugated over its full height and suspended in the boiler by its hot
and cold water connections.

The fact that the cylinder expands and contracts as it is used and that cold
water is not in contac t with the intense heat of the burner f lame prevents scale
formation. This resistance to scale, along with the anti-corrosion properties of
the stainless steel mean that sacrificial anodes are not needed.

The Delta Pro has a major advantage over other hot water boilers: it heats hot
water with a primary circuit, which allows the primary fluid to also be used
for heating.

STANDARD EQUIPMENT

DELTA PRO S MODELS 25/45/55 HAVE THE
FOLLOWING COMPONENTS AS STANDARD:

- on/off switch

- summer/winter selector

- thermostat adjustable from 60°C to 90°C

- temperature-pressure gauge

- limit thermostat (auto-reset) 95°C

- manual reset safety thermostat 103°C

- primary safety valve 3Bar

- hot water safety valve 7Bar

- drain down valve

- body fully insulated with rigid polyurethane foam

DELTA PRO PACK MODELS 25/45 HAVE THE
FOLLOWING COMPONENTS AS STANDARD:

- on/off switch

- summer/winter selector

- thermostat adjustable from 60 °C to 90 °C

- temperature-pressure gauge

- limit thermostat (auto-reset) 95 °C

- manual reset safety thermostat 103 °C

- primary safety valve 3 Bar

- hot water safety valve 7 Bar

- manual four-way valve (servomotor available as an option)

- circulator with automatic air eliminator

- primary expansion tank 12 litres

- hot water expansion tank 2 litres

- drain down valve

- body fully isolated with rigid polyurethane foam

OPTIONAL EQUIPMENT

DELTA PRO S 25/45 & PRO PACK 25/45

- Balanced flue kit (except for Delta Pro S 55)

- Control Unit kit (Delta Pro Pack only)

- Servomotor (Delta Pro Pack only)

CONSTRUCTION FEATURES

CASING

The boiler is covered by a steel casing which has been scoure d and phosphated
before being stove enamelled at 220°C.

BOILER BODY

The boiler body containing the primar y fluid is constructed with STW 22 steel.
This is tested at a pressure of 4.5bar (maximumservice pressure = 3 bar).

TANKINTANK ACCUMULATOR/HEAT EXCHANGER

The internal ring-shaped inner tank is constructed from Chrome/Nickel 18/8
stainless steel and has a large heat exchange surface area to quickly heat the
water. It is corrugated over its height by an exclusive manufacturing process
and is entirely argon arc welded using the TIG (Tungsten Inert Gas) method.

COMBUSTION GAS CIRCUIT

This includes:

• The flue tubes:

The different DE LTA Pro models include, depending on their power, 4 or 8

steel flue tubes with an internal diameter of 64mm. Each tube is equipped
with a stainless steel turbulator designed to improve thermal exchange and
reduce flue gas temperature.

• The sealed combustion chamber:

The combustion chamber of all the DELTA Pro models is entirely water

cooled.

INSULATION

The boiler body is fully insulated by rigid polyurethane foam with a high
coefficient thermal insulation, sprayed-on without the use of CFCs.

DESCRIPTION OF THE BOILER

DELTA PRO S 25/45/55 & PRO PACK 25/45 MODELS

1. Flue reduction collar with easy access for servicing

2. Rigid polyurethane foam insulation

3. PVCC dip tube with cold water diffuser

4. Control thermostat bulb

5. Burner

6. Burner chamber plate with refractory ceramic fibre

insulation

7. Cut-off thermostat and manual reset safety thermostat

bulb

8. Flue tubes

9. Turbulators

10. Stainless steel "Tank-in-Tank" hot water cylinder

11. Primary circuit (heating)

12. Combustion chamber

13. Boiler base

14. Heating flow

15. Heating return

16. Domestic hot water outlet

17. Domestic cold water supply

18. Primary hot water safety valve [7 bar]

19. Primary heating safety valve [3 bar]

20. Flue connection Ø 100mm

21. Drain down valve

DELTA PRO PACK 25/45 MODELS

22. Hot water expansion tank [2 litres]

23. Heating circulator with built-in automatic air eliminator

24. Four-way mixer valve (optional motor)

25. Heating expansion tank [12 litres]

Delta P ro S / Delta Pro Pac k : 664Y4900 • E

EN • 4

DESCRIPTION

Delta Pro S 25/45/55 models

1

14

7

16

2

8

3

9

4

5

10

11

12

19

15

18

17

20

ENFRRU PL DE IT ES NL

6

22

1

2

3

4

13

Delta Pro Pack 25/45 models

23

24

7

8

9

10

14

16

19

21

15

18

17

20

25

11

5

6

12

13

EN • 5

21

Delta P ro S / Delta Pro Pac k : 664Y4900 • E

USER GUIDE

USE OF THE BOILER

ENFRRU PL DE IT ES NL

Please get your system serviced every year by a qualified

technician. More frequ ent servicing may be required depending
on boiler use . If this is the case, consult your installer for advice.

Starting the burner:
In normal operation, the burner starts automatically as soon as

Also switch the general switch on the control panel to “OFF”.

the boiler drops below the temperature set point.

Before the boiler is serviced, switch of f the electrical supply

with the external isolator.

HEATING CIRCUIT PRESSURE

The heating circuit pressure must be at least 1 bar and must be regularly
checked by the end user. Always make sure that the appliance is of f when
refilling the s ystem. To do this, use the ON/OFF switch. Fo r further information,
please contact your installer.
A safety va lve is provided under the appliance. If th e pressure of the installation
exceeds 3 bars , this valve opens and water from the system is drained off. If this
happens, please contact your installer.

GETTING TO KNOW THE CONTROL PANEL

1 - Control thermostat

If the boiler is only used for producing hot water, the boiler temperature may
be adjusted between 60°C and 90°C.
If the boiler is used for hot water and heating, the boiler’s control thermostat
will generally be set to 80°C for optimum operating conditions.

2 - General switch

This switch is used for starting and shutting down the boiler.

3 - Summer/Winter selector

This is used to turn the heating circulator on and of f (if connected directly to
boiler wiring).

4 - Temperature-pressure gauge

This gauge displays the boiler temperature and the pressure inside the primary
circuit. The temperature should not exceed 90 °C. If it is higher than this,
the boiler should be shut down and the thermostat settings checked. If the
problem persists, call a technician. The pressure should not fall below 1 bar.
If it does, consult the “Heating system pressure” paragraph further on in this
section.

5 - ACV controller (optional)

Refer to the controller instructions if you have this option.

6 - Manual reset safety thermostat

If the boiler temperature exceeds 103 °C, this safety device will shut down
the boiler and the overheat warning light will come on. To restart, the boiler
temperature must fall below 60 °C. Unscrew the cover and press the restart
button using a pen or a similar pointed object, then replace the cover. If the
problem persists, turn the boiler off and call a technician.

Water from the safety valve may be extremely hot

and causevery severe burns.

15

6

Delta P ro S / Delta Pro Pac k : 664Y4900 • E

4 3

2

EN • 6

USER GUIDE

OIL OR GAS BURNER LOCKOUT

The safety warning light on the burner indicates an operational fault.
Wait five minutes and then reset the burner by pressing the “RESET” button
on the burner.

If the burner does not restart, call a technician after making sure that it is not
a power cut or that the oil/gas is of f.

If the oil or gas burner is not working, turn off the power to

the boiler using the external isolator before resetting the safety
thermostat on the control panel.

PUSH

Manual reset safety thermostat

Wait until the boiler temperature is below 60 °C before

switching on.

If the problem persists, please contact your installer.

ENFRRU PL DE IT ES NL

ACV oil burners

Starting the burner:

In normal operation, the burner starts automatically as soon as the boiler
drops below the temperature set point.

To make sure your system works correctly, please have it

serviced every year by a qualified technician before the heating
season.

REPAIRING THE BURNER

For all burners, please refer to the servicing and repair sections in the burner
manual.

ACV premix gas burners

EN • 7

Delta P ro S / Delta Pro Pac k : 664Y4900 • E

TECHNICAL CHARACTERISTICS

GENERAL

ENFRRU PL DE IT ES NL

The units are delivered fully assembled, tested and packed on a timber base
with shockproof edges; the package is protected by a heat-shrunk plastic film.
Upon receipt and af ter unpacking, check th e equipment for transport dam age.
For transport purposes, refer to the dimensions and weights given below:

MAXIMUM OPERATING CONDITIONS

Maximum Service Pressure [DHW tank full of water]

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

- DHW circuit : ......................................................................................................................... 8,6 bar

- Recommended safety valve (central heating) : ...................................................... 3 bar

- Recommended safety valve (DHW) : ........................................................................... 7 bar

Mains supply pressure

Max 6 bar, without a pressure reducing valve being required (to avoid discharge
of the safety pressure valve).

Maximum Operating Conditions

Maximum temperature : 90°C

Domestic Hot Water Quality

See "Recommendations for the Prevention of Corrosion and Scaling"

GENERAL CHARACTERISTICS

BURNER CHAMBER PLATE
OIL OR BLOWN GAS

The burner chamber plate has 4 threads (M 8) for attaching the burner. It is
protected from heat by a blanket insulation.

5353

5353

Ø 112

4x Ø 6,5 (M8)

Delta Pro S &

Pro Pack 25

Delta Pro S &

Pro Pack 45 Delta Pro S 55

Input power [Input] kW 28,3 49,3 58,7

Useful nominal power [output] kW 26,0 44,3 53,9

Eciency 80/60°C [max. output] % 91,9 89,8 91,8

Total capacity L 158 127,5 151

Primary capacity L 83 62,5 68

Heating connection Ø 1" [F] 1" [F] 1" [F]

Domestic hot water connection Ø 3/4" [M] 3/4" [M] 3/4" [M]

DHW cylinder heat exchange surface m 1,59 1,99 2,46

Water pressure drop boiler at ∆t = 20°C mbar 15 25 37

Flue gas circuit pressure drop mbar 0,25 0,30 0,45

DOMESTIC HOT WATER PERFORMANCE

System operating at 80°C

Peak ow rate at 40°C [

Peak ow rate at 40°C [

Continuous ow rate at 40°C [

Tank rell time at 60°C

T = 30°C] L/10' 268 316 362

T = 30°C] L/60' 806 1284 1533

T = 30°C] L/h 645 1161 1405

Delta Pro S &

Pro Pack 25

Delta Pro S &

Pro Pack 45 Delta Pro S 55

Initial heating time Minutes 32 16 16

After drawing o 140litres at 45°C Minutes 15 9 7

Delta P ro S / Delta Pro Pac k : 664Y4900 • E

EN • 8

TECHNICAL CHARACTERISTICS

DIMENSIONS

Delta Pro S 25 1615 540 584 1386 360 200 100 220 1445 1445 928 1400 — 145

Delta Pro S 45 1615 540 584 1386 390 200 100 220 1445 1445 928 1400 — 168

Delta Pro S 55 1760 540 584 1586 390 200 100 220 1645 1645 928 1600 — 200

Delta Pro Pack 25 1760 540 584 1386 360 63 100 220 1723 1445 — 1400 128 145

Delta Pro Pack 45 1760 540 584 1386 390 63 100 220 1723 1445 — 1400 128 168

(*) Empty weight without burner

A

[mm]B[mm]C[mm]D[mm]E[mm]F[mm]

Ø G

[mm]H[mm]I[mm]J[mm]K[mm]L [mm]M[mm] Kg (*)

Delta Pro Pack 25/45Delta Pro S 25/45/55

CB

CB

ENFRRU PL DE IT ES NL

A

D

E

F

G

I

K

H

J

L

AA

D

E

G

I

H

F

M

J

L

EN • 9

Delta P ro S / Delta Pro Pac k : 664Y4900 • E

ELECTRICAL CONNECTION

ELECTRICAL CONNECTION

ENFRRU PL DE IT ES NL

SUPPLY PRINCIPLE

The boiler uses a single phase supply at 230 V - 50 Hz. A mains isolator with 6A
mcb (5A fuse) must be fitted outside the boiler to allow the power to be shut
off during servicing and before any repairs are carried out.

COMPLIANCE

The installation must comply with current regulations.

SAFETY

The hot water circuit must be connected separately to earth.

The power to the boiler must be isolated before any work is

carried out on it.

1. Boiler supply

2. On/off switch

3. Safety thermostat [103°C max.]

4. Summer/winter selector

5. Control thermostat [60/90°C]

6. Cut-off thermostat [95°C max.]

7. Connection terminal

8. Burner connection plug [7 pin]

9. Room thermostat connection (optional)

10. Connection of the heating circulator

[optional except for on Pro Pack]

B. Blue
Br. Brown
Bk. Black
G. Grey
Gr. Green
Or. Orange
V. Violet
Y/Gr. Yellow/Green

Y/Gr

Y/Gr

3

2

Or

1

Or

1

Or

Y/Gr

4

P

Bk

Bk

2

2a

Br

Y/Gr

B

1

1a

B

Y/Gr

B

Br

1 2 3 4 7 10 1311 1712 14 15 16

B

Br

Y/Gr

5 6

1a

V

V

B

Y/Gr

V

Y/Gr

B

Or

B

8 9

Y/Gr

B

Br

Bk

B

Br

1

t

4

C

M

109

LPE N

230 V ~ 50 Hz

6A

Br

Y/GrBBk

1

5

tt

4

6

t

4

Bk

G

Gr

G

T2 S3T1NL1 B4

Bk

Or

V

Y/Gr

Y/Gr

Gr

1

C

1

C

7

8

Delta P ro S / Delta Pro Pac k : 664Y4900 • E

EN • 10

INSTAL LATION

RECOMMENDATIONS FOR THE PREVENTION
OF CORROSION AND SCALING

HOW OXYGEN AND CARBONATES CAN AFFECT THE
HEATING SYSTEM

Oxygen and dissolved gasses in the water of the primary circuit
contribute to the oxidation and the corrosion of the system components
that are made of ordinary steel (radiators, ...). The resulting sludge is then
deposited in the boiler exchanger.

The combination of carbonates and carbon dioxide in the water results
in the formation of scale on the hot sur faces of the installation, including
those of the boiler exchanger.

These deposits in the heat exchanger reduce the water flow rate and
thermally insulate the exchange 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 filling
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.

4. Limit the carbonate concentration in the water

- T he fill water must be sof tened if its hardness is highe r 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 heating 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 6,5 < pH < 8,5

Conductivity < 400 μS/cm (à 25°C)

ENFRRU PL DE IT ES NL

PREVENTION PRINCIPLES

1. Clean the existing system before installing a new boiler

- Before the system is filled, it must be cleaned in accordance with
standard EN14868. 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 boiler
from the heating circuit using a plate-to-plate exchanger or
equivalent.

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 forbidden.

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

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

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

Chlorides < 125 mg/l

Iron < 0,5 mg/l

Copper < 0,1 mg/l

EN • 11

Delta P ro S / Delta Pro Pac k : 664Y4900 • E

INSTAL LATION

BOILER ROOM

ENFRRU PL DE IT ES NL

- The flue connection must be carried out in compliance with the standards
in force, for example NBN D51-003, taking account of local energy supplier
and fire regulations as well as regulations relating to “noise pollution”.

- Make sure that all air vents are unobstructed.

- Do not store flammable products in the boiler room.

- Make sure that corrosive products, such as paint, solvents, chlorine, salt,
soap and other cleaning products, are not stored near to the boiler.

- The boiler must be placed on a non-combustible surface.

Accessibility

The boiler room must be large enough to allow good access to the boiler. The
following minimum distances are required around the boiler: (500 mm in
front, 200mm to the sides, 150mm behind and 700mm above).

OPTIONAL BALANCED FLUE
CONNECTION KIT

Available only for Delta Pro S & Pro Pack 25/45 models.

(code : 10800264)

B23 FLUE CONNECTION

IM POR TANT:

The boiler is to be installed by a qualified engineer,

Boiler room ventilation

The boiler room must be fitted with top and bottom vents.

Given that regulations var y from one country to thenext, these

Each installer must ensure that boiler room ventilation

Flue diameter type B23

inaccordance with current regulations.

The diameter of the Flue must not be smaller thanthat of the

boiler’s flue reduction collar.

The tables below give the values defined according toBelgian

regulations.

tables are given for information only.

complies with current regulations.

Height

5 m 10 m 15 m

Delta Pro S 25

Ø mm 120 100 100

Delta Pro Pack 25

Delta Pro S 45

Ø mm 160 140 125

Delta Pro Pack 45

Delta Pro S 55 Ø mm 180 150 135

Delta P ro S / Delta Pro Pac k : 664Y4900 • E

EN • 12

INSTAL LATION

TYPE OF FLUE CONNECTION

B23 : Connection to a flue with the combustion air taken directly in the

boiler room.

B23P : Connection to an exhaust system of the combustion products

designed to operate with positive pressure.

C13 : Connection by pipes with horizontal terminals that simultaneously

take in combustion air for the burner and discharge combustion
products outside through openings that are either concentric or
close enough together to be subjected to similar wind conditions.

C33 : Connection by pipes with vertical terminals that simultaneously take

in fresh air for the burner and discharge the combustion products
outside through openings that are either concentric or close enough
together to be subjected to similar wind conditions.

C43 : Connection by two ducts to a collective duct system serving more

than one appliance; this system of collec tive ducts features two ducts
connected to a terminal unit that simultaneously takes in fresh air for
the burner and discharges the combustion products outside through
openings that are either concentric or close enough together to be
subjected to similar wind conditions.

ENFRRU PL DE IT ES NL

C53 : Connection to separate ducts for the supply of combustion air and

for venting the combustion products; these ducts may end in zones
with different pressure levels.

C63 : Type C boiler which is intended for connection to a room sealed f lue

system which is approved and sold separately.

(Prohibited in Belgium).

Due to the high efficiency of our boilers, the flue gases are

released at low temperature. As a result, there is a risk of
condensation of the flue gases, which could damage some
chimney constructions; to avoid this risk, it is strongly
recommended to line the chimney. To prevent condensates
to flow back into the boiler, we strongly advise to install a
condensates collector. Please contact your installer for more
information.

Connection type

Models Burners B23 B23P C13 C33 C43 C53 C63

BMV1 / BMR-31 / BMe1

Delta Pro S 25 &

Delta Pro Pack 25

Delta Pro S 45 &

Delta Pro Pack 45

Delta Pro S 55

BMV1-FV

BG 2000-S 25

BG 2000-SV 25

BMV2

BMV2-FV

BG 2000-S 45

BG 2000-SV 45

BMV2

BG 2000-S 55

For concentric connection, the total leng th of the flue must be no more than 6 metres and no less than 1metre (including the terminal).

For double pipe connection (only with gas) :
Gas = 10 metres + 4 pipe bends

EN • 13

Delta P ro S / Delta Pro Pac k : 664Y4900 • E

INSTAL LATION

ENFRRU PL DE IT ES NL

Boiler room ventilation

Delta Pro S & Pro Pack

A = Top vent cm

B = Bottom vent cm

C = Draught regulator mm Ø 100

Flue connection options

2

2

150

180

B23P

B

C13

AAA

A

C43

C43

C33

AAA

B23

C53

Delta P ro S / Delta Pro Pac k : 664Y4900 • E

C

B

EN • 14

INSTAL LATION

FLUE CONNECTION ACCESSORIES

Concentric Stainless steel - Stainless steel Ø 100/150 mm

A

TERMINALS

Code Item SIZE

537D6197 Vertical terminal 1515 mm

537D6198 Horizontal terminal with wall plates

B

DUCTS

Code Item SIZE

537D6199 Length 250 mm 210 mm

537D6200 Length 500 mm 460 mm

537D6201 Length 1000 mm 960 mm

C

ADJUSTABLE DUCT

Code Item

537D6202 Length adjustable from 325 to 400

D

PIPE BENDS

Code Item

537D6203 43°-45° bend

537D6204 87°-90° bend

795 mm

C13 C33

A

255 540

D

F

ENFRRU PL DE IT ES NL

240 630

190

B

E

CONDENSATION MEASURING AND

COLLECTION DEVICE

Code Item SIZE

537D6226 Condensate collector and measuring tube 140 mm

F

ACCESSORIES

Code Item SIZE

537D6208 Flat roof ashing (base Ø 430mm) 110 mm

537D6209 Adjustable ashing

537D6210 Attachment Ø 150mm

G

ADAPTER

Code Item SIZE

537D6207

F

BALANCED FLUE CONNECTION

Code Item

10800264

Parallel concentric adapter
Ø 100/150 mm - 2 x Ø 100 mm 205 mm

Balanced ue connection kit

F

B

C

295

270

D

E

EN • 15

Delta P ro S / Delta Pro Pac k : 664Y4900 • E

INSTAL LATION

DOMESTIC HOT WATER CONNECTION

ENFRRU PL DE IT ES NL

EXAMPLE OF CONNECTION WITH
THERMOSTATIC MIXER VALVE

1. 7 bar hot water safety valve (as standard)

2. Pressure reducer

3. Temperature control valve

4. Hot water circulator (optional)

5. Non-return valve

6. Hot water expansion tank (as standard on Pro Pack, 2 litres)

7. Cold water feed valve

8. Hot water outlet

9. Drain down valve

10. Syphon valve

11. Isolating valve

4

5

6

7

2

5

3

11

10

Pressure reducer

If the water mains pressure is greater than 6 bar, a pressure reducer calibrated
to at least 4.5 bar must be fitted (UK regulations apply).

Hot water safety valve

The hot water safety valve is at 7 bar; valve discharge must be connected to
drain (UK regulations apply).

Hot water expansion tank (as standard on Pro Pack, 2 litres)

Installing a hot water expansion tank avoids any risk of pressure surges due to
water hammer or pressure variations.

Optional hot water circulation

If the tank is situated a long way from the point of use, theninstalling a closed
return circuit can provide a faster supply of hot water at all times.

IM PORTA NT

As a safety measure against burns, we strongly

recommend installing a thermostatic mixer.

8

Optional fittings available

Pressure reducer Ø 3/4"

1

9

Temperature mixing valve Ø 3/4"

Expansion tank 5 litres

If there is a risk of low pressure in the hot water circuit

(installation of a Delta Pro S & Pro Pack on the roof of a
building), it is essential to install a vacuum breaker device onto
the cold water supply.

IM PORTANT

It is essential that the DHW cylinder is filled and pressurised

before filling the heating circuit.

Delta P ro S / Delta Pro Pac k : 664Y4900 • E

EN • 16

INSTAL LATION

HEATING CONNECTION

EXAMPLE OF A BASIC CIRCUIT CONNECTION

1. Four-way motorisable mixer valve

2. Circulator (as standard on Pro Pack)

3. Heating isolating valve

4. System filling valve

5. 3 bar heating safety valve

(as standard)

6. Primary expansion tank (as standard on Pro Pack)

7. Control unit (optional)

8. Drain down valve (as standard)

(as standard on Pro Pack)

3

1

3

2

OIL SUPPLY FOR ACV BURNERS

Supply construction and installation must be in accordance with current
regulations.

For further information regarding the oil supply, please

consult the technical manual supplied with the burner.

If a different burner is installed, please refer to the

manufacturer’s technical manual.

GAS SUPPLY FOR ACV BG 2000S BURNERS

- The Delta Pro S & Pro Pack boilers combined with an ACV BG 2000-S

burner have a Ø 3/4” [F] gas connection for connection of a g as supply valve.

- The gas connections must comply with all applicable standards (in Belgium:
NBN D51-003).

- If there is a risk of dirt stemming from the gas network, place a gas filter
upstream of the connection.

- Purge the gas pipe and carefully check that there are no leaks on the boiler’s
internal and external pipes.

- Check the system’s gas pressure. Please refer to the technical data table.

- Check the gas pressure and consumption when commissioning the
appliance.

ENFRRU PL DE IT ES NL

7

5

4

6

8

DRAIN VALVE

The safety valves must be connected to the drain.

DELTA PRO PACK HYDRAULIC KIT

This hydraulic kit is factory assembled on Delta Pro Pack 25 and Delta Pro
Pack 45 models comprising:

• A circulator with automatic air eliminator built in.

• A four-way manual motorisable valve (servomotor available as an option).

• A primary 12 litres expansion tank.

• A hot water 2 litres expansion tank.

EN • 17

Delta P ro S / Delta Pro Pac k : 664Y4900 • E

CONTROL

INSTALLATION OF A HIGH OR LOW HEATING CIRCUIT

ENFRRU PL DE IT ES NL

WITH CONTROL UNIT

SCHEMATIC DIAGRAM

The heating (high temperature or floor heating) is controlled by the AF200
outside temperature detector supplied with the Control Unit and by the RFF
room detector or RS Zone Unit.

The detectors are connected to a controller that can be built into the boiler.

This controller operates the four-way valve and the circulator depending on
requirements (calculated from the outside temperature) and on the start
temperature measured by a third detector.

- The system provides a high level of comfort as the start temperature is
constantly adapted to heating requirements.

- Built-in timer with setting of heating times (day) and lower temperature
times (night).

- The room detector allows the user to adjust the comfort setpoint to their
specific requirements.

Zone Unit / RFF

AF200

Control Unit

RAM

VF202

Equipment required
asoptions Codes Descriptions

10800188

10800108

10800056

ou

10800120 RTF room sensor

10800045

10510900

Control Unit :

Supplied with an AF200 outside detector and a 2 kΩ KVT bulb sensor

AF200 2 kΩ outside temperature sensor :

Included with control unit

RS Zone Unit :

Remote control + room sensor

VF202 2 kΩ contact sensor :

For outlet on controlled circuit

RAM 5409 contact thermostat :

Obligatory to protect oor heating circuits

10800199

Delta P ro S / Delta Pro Pac k : 664Y4900 • E

ARA661 servomotor :

Motor for four-way valve

EN • 18

CONTROL

Wiring diagram for the intermediate base for connection to the Control Unit

X3

1

PE3 1014137 85 9 15 11

N

PE

N

B

B

Br

Y/Gr

N N

ENFRRU PL DE IT ES NL

X2 X1X4X3

X2X4

23 24 25 26 27 28 29 30X131 32 33 34 35 36 37 3819 20 21 2215 16 17 1811 12 13 14106 7 8 92 3 4 5

Bus B

Bus A

PEPE

232323 2628293330313225 2324

1 2 3 4 7 10 1311 1712 14 15 16

Br

Bk

Y/Gr

Y/Gr

LPE N

8 9

5 6

B

B

B

G

Br

B

Br

Y/Gr

Gr

Bk

Y/Gr

M

RAM
5409

M

CCW

ARA661

Control Unit hydraulics menu

Parameters Descriptions

P02 OFF

P04 OFF

P05 OFF

BusABus

B

CWN

RTF

RS

AF200VF202Zone Unit

Br

Y/GrBBkGGr

T2 S3T1NL1 B4

Menu chauage du Control Unit

Parameters Descriptions

P01 OFF

EN • 19

Delta P ro S / Delta Pro Pac k : 664Y4900 • E

A

DE

BMR 31 OIL BURNER FEATURES

DESCRIPTION OF THE BMR 31 OIL BURNER

ENFRRU PL DE IT ES NL

This new generation of oil burners meets current gas performance and hygiene requirements. The burner is fitted with top quality components using the latest
technology and the oil is preheated.

For further information, please consult the technical manual supplied with the burner.

Delta Pro S &

BMR 31 OIL BURNER SETTINGS

Burner type BMR 31

Input power kW 25

Nozzle Type Steinen

Gal/h 0,65

Angle 45°H

Pump pressure bar 10,5

Blast tube pressure mbar 3,2

V = Air valve position 2 - 3

X = Nozzle line 2

Y = Distance between burner and ange mm 40

Z = Setting screw of the air valve mm 20

Pro Pack 25

Y

3

1

2

7

4

6

5

10

9

8

11

Z

V

X

DIMENSIONS

BMR 31 240 270 215 280 135 M 8,5 80 81 150 12

B

A

mm

B

mm

C

mm

D

mm

G

C

1. Control box

2. Electrical connection

3. Blast tube

4. Ignition unit

5. Oil pump

6. Motor

7. Indication lamp / reset button

8. Oil pre-heater

9. Fixing flange

10. Baffle plate

11. Motor condenser

E

mm

F G ø

mm

L ø

mm

LK ø

mm Kg

L

LK

Delta P ro S / Delta Pro Pac k : 664Y4900 • E

F

EN • 20

BMV OIL BURNER FEATURES

DESCRIPTION OF THE BMV OIL BURNER

For our DELTA Pro S & Pro Pack boilers, we have opted for the latest technology of ACV BMV1 and BMV2 boilers, which involves a third-generation transparent
flame burner. The advantages of this burner construction lie in operation saving the maximum amount of energy with very low emissions of harmful substances
(approval according to EN 267:1999-11, category 3, the German ‘Blue Angel’ environmental label, according to RAL-UZ 9, approval in accordance with the Swiss Air
Purity Act (LRV) a fan that can withstand extreme pressure and a structure that is easy to service. We draw your attention to the fact that installation, commissioning
and servicing should be carried out by a specialist company. These installation and servicing instructions contain important information on this subject. To make sure
the system operates at all times in such a way as to save energy and release few harmful substances, we recommend that you have your burner inspected every year
by a specialist company.

For further information, please consult the technical manual supplied with the burner.

BMV OIL BURNER SETTINGS

Burner BMV1 BMV1 FV BMV2 BMV2 FV BMV2

Input power kW 27,9 27,9 50,0 50,0 61,0

Nozzle Gal/h 0,60 0,60 1,25 1,25 1,35

Nozzle angle 45° H 45° H 60° H 60° H 60° H

Oil ow kg/h 2,35 2,35 4,22 4,22 5,14

Pump pressure bar 12 12 10 10 11

Air reducer % 25 - 30 — 67 - 72 — 90 - 95

Air inlet % 30 - 35 24 - 28 57 - 62 75 - 80 88 - 93

Nozzle line mm 6 - 8 6 - 8 12 - 14 13 - 15 17 - 19

Blast tube pressure mbar 2,0 - 2,5 2,0 - 2,5 2,2 - 2,7 2,0 - 2,5 2,8 - 3,3

Flue gas temperature net value °C 138 138 164 164 140

Delta Pro S &

Pro Pack 25

Delta Pro S &

Pro Pack 45 Delta Pro S 55

ENFRRU PL DE IT ES NL

1. Control box

2. Nozzle line protection

3. Electrical connection

4. Fixing flange

5. Blast tube

6. Ignition unit

7. High-voltage ignition cables

8. Oil pump

9. Oil supply line connection

10. Oil return connection

11. Motor condenser

12. Motor

13. Pump/nozzle connecting pipe

14. Indication lamp / reset button

15. Burner casing

16. Nozzle line adjustment screw

17. Air reducer

(except BMV1 FV and BMV2 FV)

18. Air inlet

18

17

11

12

13

10

15

16

1

14

32

4

5

6

7

8

9

EN • 21

Delta P ro S / Delta Pro Pac k : 664Y4900 • E

BG 2000-S GAS BURNER FEATURES

ACV BG 2000S PREMIX GAS BURNER

ENFRRU PL DE IT ES NL

The BG 2000-S air/gas premix burner has a Honeywell gas valve, a venturi
tube and an electric control relay. The gas valve has been specially designed
for low NOx air/gas premix burners with automatic ignition and ionisation
flame detection.

The output pressure of the gas valve is equal to the air pressure at the neck of
the venturi tube, less the limit of the offset adjustment. The fan takes in the
combustion air through the venturi tube into which the gas inlet opens. As it
passes through, the air creates a dif ferential across the neck of the venturi tube
and draws in the gas at the venturi tube outlet. A perfect air/gas mix passes
through the fan and is then to the burner tube.
The electric control relay attached to the gas valve ensures that the burner
flame is ignited and controlled correctly.

This principle guarantees safe and quiet operation:

• In the event of low air f low, the differential across the venturi tube falls, the
gas flow rate diminishes, the flame extinguishes and the gas valve closes: the
burner is then in lockout.

• In the event of flue blockage or restriction, the air flow rate falls, then the
same reactions as those described above causing burner lockout.

Air/gas mix control principle

A. Air
B. Gas
C. Venturi tube
D. Fan
E. Air – Gas mix
F. Offset adjustment screw
G. Gas flow rate adjustment screw

C

A

F

B

D

E

G

228 209

The BG 2000-S burner is preset in the factory

for natural gas.

Conversion to propane:

66

PROHIBITED IN BELGIUM.

Conversion kit attached to the burner including:

- Cover plate.

- Information plate.

- Settings sticker.

- Installation instructions.

Delta Pro S &

GAS BURNER SETTINGS

Burner BG 2000-S/25 BG 2000-SV/25 BG 2000-S/45 BG 2000-SV/45 BG 2000-S/55

Input power kW 28,0 28,0 50,0 50,0 61,0

2 natural gas % 9,0 9,0 9,0 9,0 9,0

CO

2 propane % 11,0 11,0 11,0 11,0 11,0

CO

Gas connection Ø 3/4" [F] 3/4" [F] 3/4" [F] 3/4" [F] 3/4" [F]

Fan speed rpm 3400 3400 4400 4400 4100

Gas ow rate [G20 - 20 mbar] m/h 2,95 2,95 5,29 5,29 6,45

Gas ow rate [G25 - 25 mbar] m/h 3,43 3,43 6,15 6,15 7,51

Gas ow rate [G31 - 37/50 mbar] m/h 1,14 1,14 2,05 2,05 2,50

Flue gas temperature net value °C 151 151 178 178 150

Pro Pack 25

185

201

Delta Pro S &

Pro Pack 45 Delta Pro S 55

307

Delta P ro S / Delta Pro Pac k : 664Y4900 • E

EN • 22

BG 2000-S GAS BURNER FEATURES

GAS CATEGORIES

G20 20 mbar 20 mbar 20 mbar 20 mbar 20 mbar

G25 25 mbar 25 mbar 25 mbar 25 mbar

G30 30 - 50 mbar 30 - 50 mbar 30 - 50 mbar

G31 30 - 50 mbar 37 - 50 mbar 30 - 50 mbar 37 - 50 mbar 30 - 50 mbar 37 - 50 mbar 37 mbar

BE Belgium

CH Switzerland

CZ Czech republic

DE Germany

DK Denmark

EE Estonia

ES Spain

FR France

GB Great Britain

GR Greece

ENFRRU PL DE IT ES NL

I2E(S)B II2H3B/P II2H3P II2E3B/P II2Er3P II2L3B/P II2L3P I3P

IE Ireland

IT Italy

LU Luxembourg

LT Lithuania

NL Netherlands

PL Poland

PT Portugal

SI Slovenia

SK Slovakia

SE Sweden

EN • 23

Delta P ro S / Delta Pro Pac k : 664Y4900 • E

BG 2000-S GAS BURNER FEATURES

ENFRRU PL DE IT ES NL

Burner chamber plate

Ignition cable

Burner tube

Ionisation cable

Control relay

Potentiometer adjustment

Burner power plug

Flame sight glass

Ignition electrode

Ionisation electrode

Burner chamber plate insulation

Fan

Gas valve

Burner RESET

Gas connection

Ø 3/4” [female]

Burner chamber plate seal

Delta P ro S / Delta Pro Pac k : 664Y4900 • E

Venturi tube

EN • 24

COMMISSIONING AND MAINTENANCE

FILLING OF DHW AND HEATING CIRCUITS

IM PORTANT

It is essential that the DHW cylinder is filled and pressurised

before filling the heating circuit.

1. Fill the DHW circuit and bring it up to pressure.

2. Fill the heating circuit taking care not to exceed the 2bar pressure limit.

3. Vent the air from the top of the boiler.

4. After venting the air from the system, bring the pressure up to the static

head plus 0.5 bar.

Head of the heating system:

• 10 m ➠ heating circuit pressure = 1.5 bar

• 15 m ➠ heating circuit pressure = 2 bar

BOILER COMMISSIONING

1. Check the gas or oil supply connection and make sure there are no leaks.

2. Check the boiler power connection, the boiler room ventilation and

ensure that there are no leaks in the combustion gas discharge pipes or
the burner chamber plate.

3. Set the boiler thermostat or potentiometer to between 60°C and 90°C.

4. Set the Summer/Winter selector to the desired position.

5. Put the ON/OFF switch to the ON position.

6. Carry out the required venting, measurement and setting procedures.

DRAINING OF THE BOILER

Water f lowing out of the drain cock is very hot and can

cause severe burns. Keep people away from discharges
of hot water.

DRAINAGE OF THE HEATING CIRCUIT

1. Turn the ON/OFF switch on the control panel to the OFF position,
isolate the boiler’s external electrical supply and close the gas or oil
supply valve.

2. Close the isolating valves (3) on the heating circuit.

3. Connect a flexible hose to the drain valve (8).

4. Open the drain valve (8) to empty the heating circuit.

DRAINAGE OF THE DHW CIRCUIT

1. Turn the ON/OFF switch on the control panel to the OFF position,
isolate the boiler’s electrical supply and close the gas or oil supply valve.

2. Lower the heating circuit pressure until the gauge indicates zero
pressure.

3. Close the valves (7 and 11).

4. Open the valves (9 and 10) (9 f irst then 10).

5. Let the hot water circuit empty into the drain.

ENFRRU PL DE IT ES NL

RECOMMENDATION

ACV advises that boilers should be serviced at least once a year. This service
and any boiler inspections must be carried out by a qualified technician.

BOILER MAINTENANCE

1. Switch off the power at the external isolator and shut off the gas or oil
supply.

2. Set the on/off switch on the control panel to the OFF position.

3. Remove the top cover of the boiler (A).

4. Take off the top of the Flue reduction (B).

5. Remove the turbulators (C) from the flue pipes (D) for cleaning.

6. Remove the burner chamber plate [E].

7. Brush the flue pipes (D).

8. Clean the combustion chamber (F) and the burner.

9. Check the condition of the burner chamber plate insulation [H] and
replace if necessary.

BURNER MAINTENANCE

Refer to the burner’s service and repair instructions.

MAINTENANCE OF SAFETY DEVICES

- Check that all thermostats and safety devices are working properly:
boiler thermostat, cut-off thermostat and manual reset safety
thermostat.

- Check the safety valves of the heating and DHW circuits.

The drain valve (9) must be at ground level to allow the cylinder

to drain.

Water flowing out of the safety valve or the safety unit

may be extremely hot and could cause severe burns.

EN • 25

Delta P ro S / Delta Pro Pac k : 664Y4900 • E

COMMISSIONING AND MAINTENANCE

A

ENFRRU PL DE IT ES NL

B

D

C

F

H

E

4

5

6

7

2

5

1

3

8

11

10

3

3

2

1

9

Delta P ro S / Delta Pro Pac k : 664Y4900 • E

7

5

4

6

8

EN • 26

ENFRRU PL DE IT ES NL

EN • 27

Delta P ro S / Delta Pro Pac k : 664Y4900 • E

ENFRRU PL DE IT ES NL

Delta P ro S / Delta Pro Pac k : 664Y4900 • E

EN • 28

ENFRRU PL DE IT ES NL

EN • 29

Delta P ro S / Delta Pro Pac k : 664Y4900 • E

ENFRRU PL DE IT ES NL

Delta P ro S / Delta Pro Pac k : 664Y4900 • E

EN • 30