ACV Prestige 50 Owner's manual

EN • 1
ENGLISHFRANCAISNEDERLANDSESPAÑOLITALIANODEUTSCH
664Y3000.A
Installation, Operating and
Servicing Instructions
Prestige50 - 75

EN • 2
ENGLISHFRANCAISNEDERLANDSESPAÑOLITALIANODEUTSCH
664Y3000.A
WARNING 3
Who should read these instructions 3
Symbols 3
Recommendations 3
Applicable standards 3
Warnings 3
INTRODUCTION 4
Description of the specifications 4
USERS GUIDE 5
Directions for use 5
Settings the parameters 5
TECHNICAL CHARACTERISTICS 6
Natural gas categories 7
Propane gas categories 7
Pressure drop diagram of the boiler 7
ELECTRICAL CONNECTION 8
Wiring diagram 8
INSTALLATION INSTRUCTIONS 9
Dimensions 9
Boiler room 9
Wall mounting of the boiler 9
INSTALLATION 10
Connection to the chimney 10
Connection to the gas 11
Heating connections 11
Installation of simple heating circuit controlled by room thermostat ACV 15 12
Installation of simple heating circuit controlled by Room Unit 13
Installation of two heating circuits controlled by room thermostat ACV 15 and AM3-11 module 14
Installation of two heating circuits controlled by Room Unit and ZMC-1 module 16
Installation of three heating circuits controlled by Control Unit 18
Domestic hot water connection 19
COMMISSIONING AND MAINTENANCE 20
Commissioning the system 20
Inspection and maintenance 20
Disassembling the burner 21
Disassembling and checking the electrode 21
Disassembling the heat exchanger 21
Cleaning the heat exchanger 21
Temperature sensor resistance tables 21
MCBA PARAMETERS FOR THE SPECIALIST 22
Standby Mode 22
Settings the MCBA parameters 23
Request for information on the installation 24
Entering the code 24
MCBA parameters with code restricted access 25
Communication Mode 28
Error Mode 28
Safety stop + resolution of the fault 29
SPARE PARTS See at the end of this manual
INDEX

EN • 3
ENGLISHFRANCAISNEDERLANDSESPAÑOLITALIANODEUTSCH
664Y3000.A
WHO SHOULD READ THESE INSTRUCTIONS
These instructions should be read by:
- the specifying engineer
- the installer
- the user
- the service engineer
SYMBOLS
The following symbols are used in this manual:
• The parts may only be replaced by genuine factory parts. You
will find a list of the spare parts and their reference number
ACV to the end of this document.
• The burners are preset in our factory for use with natural
gas [equivalent to G20].
• Specific regulation applicable in Belgium:
The CO2level, the air and gas flows and the gas / air ratio
are factory set . Any field adjustments of those settings is
not allowed in Belgium.
• It is important to switch the boiler off before carrying out
any work.
• There are no user accessible parts inside the boiler casing.
APPLICABLE STANDARDS
The appliances carry the CE mark in accordance with the
standards in force in the various countries (European Directives
92/42/EC “Efficiency”, 90/396/EC “Gas appliances”).
They also carry the “HR-TOP” label (Gas condensation boilers).
WARNINGS
IF YOU SMELL GAS:
- Immediately shut off the gas intake.
- Open windows for fresh air flowing.
- Do not use any electrical appliances and do not actuate any
switches.
- Immediately notify your gas supplier and/or your installer.
This documentation is part of the information delivered with the
appliance and must be given to the user and stored in a safe
place!
An approved installer must carry out the assembly, commissioning,
maintenance and repair of the system, in accordance with current
standards in force.
ACV shall not accept any responsibility for damage caused by
noncompliant location of the system or by use of the parts or
connections not approved by ACV for this application.
The manufacturer reserves the right to change the
technical characteristics and specification of its
products without notice.
The availability of some versions and their accessories
is market dependant.
WARNINGS
RECOMMENDATIONS
• Please, read carefully this manual before installing and
commissioning the boiler.
• It is prohibited to carry out any modifications to the inside of
the appliance without the manufacturer’s prior and written
agreement.
• The product must be installed and serviced by trained
engineers, in compliance with current standards.
• Any failure to follow instructions relating to tests and test
procedures may result in personal injury or risks of pollution.
• To guarantee safe and correct operation of the appliance, it
is important to have it serviced and maintained every year by
an approved installer or maintenance company.
• In case of anomaly, please call your service engineer.
• Despite the strict quality standards imposed by ACV during
the manufacture, inspection and transport of its appliances,
you might notice some errors. Please report immediately any
fault to your approved installer. Remember to note the fault
code displayed on the screen.
Danger of burns
Essential instruction for
the safety of persons
and the environment.
Danger of electrocution.
Essential instruction for
the correct operation of
the installation.

EN • 4
ENGLISHFRANCAISNEDERLANDSESPAÑOLITALIANODEUTSCH
664Y3000.A
DESCRIPTION OF THE SPECIFICATIONS
The Prestige is a wall-mounted condensing boiler meeting the
requirements of the “HR-Top” applicable standards applicable in
Belgium. The boiler is certified compliant with EC standards as a
connected appliance: C13(x) - C33(x) - C43(x) - C53 - C83(x),
but it can also be connected as an open appliance in category
B23.
LINING
The boiler is protected by a steel lining that first of all undergoes a
degreasing and phosphation process before being lacquered and
heated at 220°C. The inside of this lining is coated with a layer of
thermal and acoustic insulation, reducing losses to a minimum.
HEAT EXCHANGER
The core of the Prestige features a new stainless steel heat
exchanger. This piece of technology represents the fruit of
exhaustive research and intensive laboratory testing. It reflects
ACV’s eighty years of experience in using stainless steel for
heating and hot water functions. The particular geometry of the
exchanger pipes is calculated to obtain a very large Reynolds
number throughout its cycles.
The Prestige achieves an exceptional output that remains stable
throughout the boiler’s life, given that it causes no oxidation
on the exchanger, which is manufactured entirely from quality
stainless steel.
BURNER
ACV uses its BG 2000-M burner for the Prestige: this is an
air/gas premix burner providing safe and silent operation while
limiting emissions (NOx and CO) to an incredibly low level. Although
the ACV BG 2000-M boiler is very modern, it uses proven
technology and is manufactured from standard spare parts that
are easily available on the market..
TEMPERATURE REGULATION
The basic version of the Prestige is fitted with a microprocessor
controlled regulator (MCBA) which takes over both the safety
functions (ignition, monitoring the flame, limiting the temperature,
etc.) and control of the boiler temperature.
This MCBA also includes a weather-dependent regulator. All you
need to do is connect the outdoor temperature sensor available
as an option to the device. However, this regulator can also
operate with a standard on/off room thermostat In addition,
with the combination of a weather-dependent regulator and a
room thermostat, you can control the temperatures based on
the weather with compensation for the indoor temperature.
There are four user adjustable parameters. By entering a
special maintenance code, qualified installers can access
several other parameters to adapt the boiler to special
requirements. In principle, these parameters are factory set
for all normal applications.
PRODUCTION OF HOT WATER
• Prestige 50 / 75 Solo : is custom-designed to operate for
heating only or in combination with the whole range of ACV
water tanks. The SmartLine range is the number one choice
for domestic applications.
FROST PROTECTION
The boiler is equipped with an integrated frost protection: as
soon as the NTC1 flow temperature drops below 7°C, the system
activates the central heating pump. As soon as the NTC1 flow
temperature drops below 3°C, the system automatically ignites
the burner until the temperature rises above 10°C. The pump
continues to run for about 10 minutes.
If an outdoor temperature sensor is connected to the system,
the pump is activated as soon as the outside temperature drops
below the specified threshold.
To provide efficient protection for the whole system against frost,
all the valves on the radiators and the convectors should be
completely open.
Description of the boiler
1. Burner, premix and modulating
2. Manual air vent
3. Heat exchanger, stainless steel
4. Water pressure safety switch
5. Chimney connection concentric tubes Ø 100/150 mm
6. Flue tube
7. Gaz pressure safety switch
8. Electrical panel
9. Control panel
INTRODUCTION
51
2
4
8
9
7
3
6

EN • 5
ENGLISHFRANCAISNEDERLANDSESPAÑOLITALIANODEUTSCH
664Y3000.A
DIRECTIONS FOR USE
Your system must be checked once a year by an approved
installer or maintenance company.
Starting the burner
During operation, the burner starts automatically as soon as
the boiler temperature drops under the required set point and
it stops as soon as the boiler reaches that temperature.
Control panel
Heating system
The central heating circuit must be pressurized (see in the
chapter “Installation” how to define the system pressure).
The pressure indicator is located on the right-hand side of the
display.
If your system needs to be refilled more than twice
a year, please contact your installer.
The CH pressure must be a minimum of 1 bar and must be
checked by the end user on a regular basis. If the pressure
drops under 0.5 bar, the integrated water pressure switch
blocks the appliance until the pressure in the system returns
to a level above 0.8 bar. The connection for a fill valve is
provided underneath the appliance. The installer can also fit
the system with a separate valve. Make sure that the appliance
is powered off when filling the system. TTo do this, toggle the
Start/Stop switch located on the left of the screen to Off. (see
the Control panel).
For more information, please ask your installer when the system
is delivered.
A safety valve is provided at the underneath of the appliance.
If the system pressure exceeds 3 bars, this valve opens and
drains the water from the system. In this case, please contact
your installer.
SETTING THE PARAMETERS
Setting the domestic hot water temperature
(Hot water temperature)
- Press Mode: The screen displays PARA.
- Press Step: the first character is 1and the last two characters
give the current hot water temperature setting.
- To change this temperature, press +or -until the last two
digits show the desired temperature value.
- Press Store to save the new temperature setting.
- Press Mode twice to return to Pilot mode (normal operating
mode).
Enabling or disabling the hot water heating mode
(hot water)
- Press Mode: The screen displays PARA.
- Press Step twice: the first character is 2and the last two
characters give the current setting:
00 = disabled; 01 = enabled.
- To change this parameter, press +or -until the screen
displays the desired value:
00 = disabled; 01 = enabled.
- Press Store to save.
- Press Mode twice to return to Pilot mode (normal operating
mode).
Enabling or disabling Central Heating mode:
(heating)
- Press Mode: The screen displays PARA.
- Press Step three times: the first character is 3and the last
two characters give the current setting:
00 = disabled; 01 = enabled.
- To change this parameter, press +or -until the screen
displays the desired value:
00 = disabled; 01 = enabled.
- Press Store to save.
- Press Mode twice to return to Pilot mode (normal operating
mode).
Setting the central heating temperature:
(maximum temperature for the heating circuit)
- Press Mode: The screen displays PARA.
- Press Step four times: the first character is 4and the last
two characters give the current central heating temperature
setting.
- To change this temperature, press +or -until the last two
digits show the desired temperature value.
- Press Store to save the new temperature setting.
- Press Mode twice to return to Pilot mode (normal operating
mode).
Fault:
The temperature setting for the appliance and the safety
functions for its various parts are continuously monitored by
a regulator controlled by a microprocessor (the MCBA). In the
event of a fault, this MCBA disables the appliance and displays
an error code: the screen flashes displaying Eas the first
character, followed by the error code.
To reset the appliance:
- Press "Reset" on the screen.
- Contact your installer of the fault happens again.
Start/Stop
switch
Pressure
gauge
Also see the user label located inside the valve on the control
panel:
USERS GUIDE

EN • 6
ENGLISHFRANCAISNEDERLANDSESPAÑOLITALIANODEUTSCH
664Y3000.A
TECHNICAL CHARACTERISTICS
Natural gas Propane gas
Central heating 50 75 50 75
Max [intake] pressure kW 49,9 72 49,9 72
Min. [intake] pressure kW 15 18,3 15 18,3
Max output 80/60°C kW 48,4 69,9 48,4 69,9
Min. output 80/60°C kW 14,7 17,9 14,7 17,9
Efficiency at 30% load [EN677] %107,8 107,8 107,8 107,8
Flue gases
CO emissions max. / min. Input mg/kWh 45 / 20 52 / 20 89 / ?? 118 / 37
NOx emissions [EN483] mg/kWh 66 / 30 62 / 38 70 / 53 71 / 60
NOx classification [EN483] 5 5 5 5
Flue gas temperature — max. Input 80/60°C °C 82 82 80 80
Flue gas temperature — max. Input 50/30°C °C 40 40 39 39
Mass flow rate of combustion products kg/h 79 115 79 115
Flue gas pipe - Max. pressure drop Pa 150 150 150 150
Concentric flue gas channel maximum length Ø 100 / 150 mm m20 20 20 20
Gas G20 / G25 G31
Category [varies by country] I 2E[S]B — I 2Er — I 2H — I 2 HS
I 2ELL — I 2L — I 2E I 3P — I 3+ — I 3B
Gas pressure mbar 20 / 25 30 / 37 / 50
G20 gas flow rate m3/h 5,28 7,6 • •
G25 gas flow rate m3/h 6,14 8,8 • •
G31 gas flow rate m3/h • • 2,0 2,9
CO2max. Input G20/25 (with front panel closed) % CO29,4 9,4 10,8 10,8
CO2max. Input G20/25 (with front panel open) % CO29,2 9,2 10,5 10,5
CO2min. Input G20/25 (with front panel closed) % CO29,3 9,3 10,4 10,4
Hydraulic parameters
Max. operating temperature °C 90 90 90 90
Boiler water capacity L20 17 20 17
Maximum operating pressure central heating bar 3333
Heat exchanger pressure drop [ΔT = 20°C] mbar 30 74 30 74
Electrical connection
Class IP 30 30 30 30
Supply voltage V/Hz 230 / 50 230 / 50 230 / 50 230 / 50
Maximum absorbed electrical power A0,8 1,1 0,8 1,1
Weight (empty) kg 54 58 54 58

EN • 7
ENGLISHFRANCAISNEDERLANDSESPAÑOLITALIANODEUTSCH
664Y3000.A
TECHNICAL CHARACTERISTICS
Natural gas categories BE FR NL LU DE
AT - CH - CZ - DK - ES - IT
FI - UK - IE - PT - SE - GR HU
I 2 E(S)B G20 / 20 mbar – G25 / 25 mbar
I 2 Er G20 / 20 mbar – G25 / 25 mbar
I 2 L G25 / 25 mbar
I 2 E G20 / 20 mbar
I 2 ELL G20 / 20 mbar – G25 / 20 mbar
I 2 H G20 / 20 mbar
I 2 HS G20 / 25 mbar
PRESSURE DROP DIAGRAM OF THE BOILER
0
20
40
60
80
100
120
140
160
180
123456
Prestige 75
Prestige 50
m3/h
mbars
Propane categories
DK - NL
NO - IT
BE - CH - ES
FR - UK - IE
PT - FI - SE
IT - GR
AT - CH
CZ - ES
NL - DE
LU - HU
BE - CH
ES - FR
UK - IE
IT - PT
PT
CZ - DK - ES
FI - FR - UK
IE - IT - NL
NO - PT - SE
AT - CH
CZ - DE
FR
I 3P [G31] 30 mbar
I 3P [G31] 37 mbar
I 3P [G31] 50 mbar
I 3+ [G30 + G31] 28 - 30 / 37 mbar
I 3+ [G30 + G31] 50 / 67 mbar
I 3B [G30] 28 / 30 mbar
I 3B [G30] 50 mbar

EN • 8
ENGLISHFRANCAISNEDERLANDSESPAÑOLITALIANODEUTSCH
664Y3000.A
230V
Br
B
Br
B
Y/Gr
M
M
P P
t
BUS B
BUS A
X11.
X12.
Br
B
Y/Gr
Br
B
B
Br
B
R
Bk
V
W
Y/Gr
B
Br
B
Br
G
R
V
G
R
V
Or Or V G
R
W
V
R
Bk
B
Bk
Or
Br
RRB
Br
B
RB
Br
Bk
V
G
Or
B
Bk
Br
R
Bk
Br
G
R
B
V
Y/Gr
Y/Gr
B
W
B
R
Y/Gr
Y/Gr
B
R
B
BB
X1.6
X1.5
X1.4
X1.3
X1.2
X7
X10.6
X10.7
X10.1
X10.3
X1.1
X2.12
X2.11
X2.10
X2.9
X2.8
X2.7
X2.6
X2.5
X2.4
X2.3
X2.2
X2.1
X3.6
X3.5
X3.4
X3.3
X3.2
X3.1
X4.3
X4.2
X4.1
X5.4
X5.3
X5.2
X5.1
1 2 3 4 5 6 7 8 9 10 11 12 13
123456
ELECTRICAL CONNECTION
WIRING DIAGRAM : PRESTIGE 50 - 75
1. 230V connection cord
2. ON/OFF switch
3. Heating pump (optional)
4. Domestic hot water pump (optional)
5. Burner
6. Gas valve
7. 230 - 24Volt transformer
8. MCBA burner control
9. Display
10. Gas pressure safety switch
11. Water pressure safety switch
B. Blue
Bk. Black
Br. Brown
G. Grey
Or. Orange
R. Red
V. Violet
W. White
Y/Gr. Yellow/Green
12. PWM connector on the blower
13. NTC1 flow sensor
14. NTC2 return sensor
15. NTC5 flue gas temperature sensor
16. Room thermostat (optional)
17. NTC3 domestic hot water sensor (optional)
18. NTC4 outdoor temperature sensor (optional)
19. NTC6 temperature sensor on second CH circuit (optional)
20. Zero volt of 24V circuit.
21. Safety thermostat RAM (optional)
22. Ionisation and ignition cable
1
2
3
4
5
6
7
9
8
10 11
12
13
14
15
16
17
18
19
20
21
22

EN • 9
ENGLISHFRANCAISNEDERLANDSESPAÑOLITALIANODEUTSCH
664Y3000.A
INSTALLATION INSTRUCTIONS
Min. 300 mmMin. 220 mm
Min. 25 mm Min. 25 mm
prestige
- The boiler must be mounted on a non-flammable wall.
- Drill two 10 mm diameter holes, spaced as indicated on
the above drawing.
- Secure the wall-mount bracket with the delivered anchor
screws.
- Hook the boiler on the bracket.
BOILER ROOM
- Make sure that all air vents are unobstructed any times.
- Do not store any flammable products in the boiler room.
- Do not store any corrosive products, paint, solvents, salts,
chlorine products and other detergent products near the
appliance.
- If you smell gas, do not switch on any lights, turn off the
gas tap at the meter, ventilate the rooms and contact your
installer.
101,6 mm
101,6 mm
48,4 mm
53,2 mm
53,2 mm
48,4 mm
WALL MOUNTING OF THE BOILER
288
48
I / J
K
I
K
65
316
J 435
prestige
C
D
E
F
BH
G
A
DIMENSIONS
50 / 75
A mm 980
B mm 500
C mm 392
D mm 100
E mm 150
F mm 175
G mm 930
H mm 400
ACCESSIBILITY
The appliance must be positioned in such a way to be
accessible any time. In addition, the following distances are
required around the appliance.
I. Heating supply 1”1/4 [F]
J. Heating return 1”1/4 [F]
K. Gas connection 3/4” [M]

EN • 10
ENGLISHFRANCAISNEDERLANDSESPAÑOLITALIANODEUTSCH
664Y3000.A
INSTALLATION
CONNECTION TO THE CHIMNEY
- The chimney connections must comply with the applicable
standards (in Belgium: NBN D51-003), the local energy
supplier’s instructions, the fire regulation and neighbourhood
good practices.
- The Prestige has an in built gas/air ratio regulator, which makes
it largely independent of the pressure drop in the air intake and
flue gas extraction system. However, the maximum pressure
drop for this system may not be exceeded, or the pressure will
diminish. Nevertheless, the gas/air ratio regulator continuously
guarantees optimum combustion with very low emission levels.
- The horizontal flue gas pipes must always be installed with a
min. slope of 5 mm per meter, upwards from the boiler side.
- There must be no obstruction or openings for any other
appliances within a radius of 0.5 metres around the flue
terminal of the Prestige.
- The maximum flue resistance is 150 Pascal. You can use the
following table as the basis for calculating this value (please also
refer to the specimen calculation presented under the table).
prestige
1000 mm
1000 mm
2000 mm
2000 mm
prestige prestige
C53
C33
150 min.
120
C13
B 23
C43
C43C33
Sample calculation:
The diagram below consists
of the following parts: pipe with
monitoring section + 2 * 90°
pipe bends + 2 metres of
horizontal pipe + 2 * 45° pipe
bends + (2 + 1 + 1) metres of
vertical pipe and fall back +
discharge.
Therefore, the resistance of this
system is as follows: 3 + (2 x 12)
+ (2 x 6) + (2 x 5,5) + (4 x 6) +
25 = 99 Pa.
This value is less
than the maximum
authorised resistance,
therefore the
installation is
compliant.
Options for connection to the chimney
Table of flue resistance in Pascal
(1 Pascal = 0,01 mbar)
Pipe
concentric
Ø 100 / 150
mm
Air inlet
separate
Ø 100
mm
Air extraction
separate
Ø 100
mm
1 m straight pipe 6 1,7 2,5
Pipe with a monitoring
section 3 — 1,3
90° pipe bend 12 5,1 7
45° pipe bend 5,5 2,1 3
Vertical pipe outlet 25 — —
Horizontal pipe outlet 20 — —
This table is based on the equipment offered by ACV and cannot be
applied generally.

EN • 11
ENGLISHFRANCAISNEDERLANDSESPAÑOLITALIANODEUTSCH
664Y3000.A
HEATING CONNECTIONS
Recommendations
- The central heating system must be completely flushed out
with tap water before connecting the boiler.
- The device must be levelled, using the provided bracket.
- The operating noises can be increased if the appliance
is installed on a wall made of wood or other lightweight
construction. Using rubber absorbers can reduce this
effect.
- The connections to the central heating system are 1"1/4
male.
- The central heating circuit must be equipped with a safety
valve routed to the drain with an open connection (to
allow inspection) and with a pump sized in function of the
pressure drops of both the circuit and the boiler and in
function of the required flow.
- Fill the system with fresh water.
Contact your ACV representative about the use of inhibitors.
- The system must be designed to ensure a continuous flow
in the boiler. If this flow is not guaranteed, for example if
using thermostatic valves, you should install a pressure-
dependent bypass in the system.
- Fit the siphon, fill it with tap water and connect the hose
to the drain using a connection with an inspection section.
Make sure you prevent the freezing of the condensates.
Example of central heating connection
1. By-pass with differential pressure valve
2. Isolating valve, heating system
3. Safety valve calibrated to 3 bar, with pressure gauge
4. System filling valve
5. Expansion vessel
6. Drain cock
7. Heating pump
1
22
4
5
63
prestige
7
INSTALLATION
CONNECTION TO THE GAS
- The Prestige is fitted with a 3/4” male fitting connector,
on which you can connect the gas tap.
- The gas connection must comply with the applicable
regulations (e.g. NBN D51-003 in Belgium) in the country
of installation.
- Where there is a risk of dirt stemming from the network,
place a gas filter upstream of the connection.
- Drain the gas pipe and check in minute detail that all the
boiler pipes, both inside and outside, are sealed.
- Check the gas pressure in the system. Consult the technical
characteristics.
- Check the gas pressure and consumption when commissioning
the appliance.

EN • 12
ENGLISHFRANCAISNEDERLANDSESPAÑOLITALIANODEUTSCH
664Y3000.A
INSTALLATION
INSTALLATION OF A SIMPLE HEATING CIRCUIT
CONTROLLED BY ROOM THERMOSTAT ACV 15
General diagram
The On/Off room thermostat controls the central heating
system (radiators or convectors).
If an outside temperature sensor is connected, the boiler
continuously adjusts its operating temperature depending on
the outside temperature.
The pump is powered as soon as the room thermostat
generates an heat demand.
Advantages for the user:
- Comfort
- Maximum Output
- Simplicity of the system
AF120
ACV 15
MCBA
Optional accessories Code Description
10800018 Room themostat ACV 15
10510100 Outside temperature sensor 12kΩ— AF120
1 2 3 4 5 6 7 8 9 10 11 12 13 1 2 3 4 5 6
Remove this
shunt before
connectiong a
room sensor
Factory
setting
typical
setting Description
00 : Heating mode “OFF”
01 : Heating mode “ON”
Setting T° for the heating water
(adjustable between 30 and 85°C).
T° min. for the heating water
(adjustable between 15 and 60°C).
Minimum outside temperature
(adjustable between -20 and 10°C).
Maximum outside temperature
(adjustable between 15 and 25°C).
00 : Using a outside temperature
sensor and a room thermostat
90
80
70
60
50
40
30
20
10
0
-20-25 -10-15 0-5 1052015 25
P4
P5
P6 P7
Outside T° (°C)
T° departure boiler (°C)

EN • 13
ENGLISHFRANCAISNEDERLANDSESPAÑOLITALIANODEUTSCH
664Y3000.A
INSTALLATION
INSTALLATION OF A SIMPLE HEATING CIRCUIT
CONTROLLED BY ROOM UNIT
General diagram
A Room Unit controls the heating system (radiators or
convectors). The unit allows the selection various central
heating functions and can be programmed for up to 3
schedules per week, both for heating and hot water
production.
In this configuration, the boiler continuously ajusts its operating
temperature in function of the outside temperature.
AF120
MCBA
Room Unit
Optional accessories Code Description
10800034 Room Unit RSC
Delivered with outside temperature sensor
10800036
Clip-in interface RMCIEBV3
Activates the communication between the MCBA and
the Room Unit RSC.
10510100 Outside temperature sensor 12kΩ— AF120
Factory
setting
typical
setting Description
00 : Heating mode “OFF”
01 : Heating mode “ON”
Setting T° for the heating water
(adjustable between 30 and 85°C).
T° min. for the heating water
(adjustable between 15 and 60°C).
Bus A
Bus B
1 2 3 4 5 6 7 8 9 10 11 12 13 1 2 3 4 5 6
10800036: Interface address “0”
= 7
= 6
= 5
= 4
= 3
= 2
= 1
= 0

EN • 14
ENGLISHFRANCAISNEDERLANDSESPAÑOLITALIANODEUTSCH
664Y3000.A
INSTALLATION
INSTALLATION OF TWO HEATING CIRCUITS
CONTROLLED BY ROOM THERMOSTAT ACV 15
AND AM3-11 MODULE
General diagram
This is a simple way to control two heating circuits (radiators
or floor heating).
You can adjust those two circuits depending on the outside
temperature.
This is the ideal configuration for floor heating with additional
heating provided by radiators.
The floor heating temperature is adjusted on a first temperature
diagram, while the radiator loop follows a second temperature
diagram, if needed with a booster function.
NTC12K
AF120
MCBA
RAM
AM3-11
SQK
ACV 15
Optional accessories Code Description
10800018 Room thermostat ACV 15
10800095 AM3-11 module :
Controls the second heating circuit - communicates directly with the MCBA
537D3040 Contact sensor 12kΩ
To be mounted on the outlet of controlled circuit.
10510900 Contact thermostat RAM 5109 :
Required to protect all fl oor heating circuits
10510100 Outside temperature sensor 12kΩ— AF120
10800104 Collector 2 circuits DN32 :
With integrated wall brackets
10800107
High temperature kit DN32:
Including: one circulation pump, two isolating valves, check valve,
two thermometers
10800106
Low temperature kit DN32:
Including: one circulation pump, two isolating valves, check valve,
two thermometers, the 3-way valve with integrated bypass.
10800142 Connection kit DN32 to the manifold:
Including: two flexible 1"1/2 hoses and 1"1/4 reduction fittings.
10800019
Servomotor SQK 349 :
Electromechanical servomotor included in low temperature kit.
(Opening / closing time: 150 sec.)

EN • 15
ENGLISHFRANCAISNEDERLANDSESPAÑOLITALIANODEUTSCH
664Y3000.A
INSTALLATION
Factory
setting
typical
setting Description
00 : Heating mode “OFF”
01 : Heating mode “ON”
Setting T° for the heating water
(adjustable between 30 and 85°C).
T° min. for the heating water
(adjustable between 15 and 60°C).
Minimum outside temperature [T4]
(adjustable between -20 and 10°C).
Maximum outside temperature [T4]
(adjustable between 15 and 25°C).
- The high T° circuit is controlled
depending on the outside T° and
the room thermostat.
- The low T° circuit is controlled
depending the outside T° only.
Maximum temperature of the
second heating circuit
Minimum temperature of the second
heating circuit
Outside T° (°C)
90
80
70
60
50
40
30
20
10
0
-20-25 -10-15 0-5 1052015 25
P4
P39
P40
P5
P6 P7
T° departure boiler (°C)
N
Y2
Y1
PhPE
NN
X1
X2
X3
21
L
L1
1 2 3 4 5 6 7 8 9 10 11 12 13 1 2 6543
PE
Ph
N
To be wired in accordance with the applicable regulations.

EN • 16
ENGLISHFRANCAISNEDERLANDSESPAÑOLITALIANODEUTSCH
664Y3000.A
INSTALLATION
INSTALLATION OF TWO HEATING CIRCUITS
CONTROLLED BY CONTROL UNIT AND
ZMC-1 MODULE
General diagram
This configuration controls two heating circuits (radiators
or floor heating). In addition, the Room unit features a
remote monitoring of the two circuits.
You can adjust those two circuits depending on the outside
temperature.
This is the ideal configuration for floor heating with additional
heating provided by radiators.
You can select various heating functions, and program up
to three weekly schedules, as well for the central heating as
for the hot water production.
AF120
Room Unit
MCBA
RAM VF202
ZMC1
SQK
Optional accessories Code Description
10800034 Room Unit RSC :
Supplied with outside temperature sensor.
10800119
ZMC-1 module (kit) :
Controls the second heating circuit - alarm contact - operates only in conjonction
with the Room Unit RSC.
10800036 Clip-in interface RMCIEBV3 :
Enables communications between the MCBA and the Room Unit RSC.
10800045 Contact sensor 2kΩ— VF202 :
To be mounted on the outlet of controlled circuit.
10510900 Contact thermostat RAM 5109 :
Required to protect all fl oor heating circuits.
10510100 Outside temperature sensor 12kΩ— AF120
10800104 Collector 2 circuits DN32 :
Whith integrated wall brackets.
10800107
High temperature kit DN32:
Including: one circulation pump, two isolating valves,
check valve, two thermometers.
10800106
Low temperature kit DN32:
Including: one circulation pump, two isolating valves, check valve,
two thermometers, the 3-way valve with integrated bypass.
10800142 Connection kit DN32 to the manifold:
Including: two flexible 1"1/2 hoses and 1"1/4 reduction fittings.
10800019
Servomotor SQK 349 :
Electromechanical servomotor included in low temperature kit.
(Opening / closing time: 150 sec.)

EN • 17
ENGLISHFRANCAISNEDERLANDSESPAÑOLITALIANODEUTSCH
664Y3000.A
INSTALLATION
AV MPK ZU AUF
0 24V A B VF VE
ZMC1
N
Y1
Y2
PhPE
NN
21BA
1 2 3 4 5 6 7 8 9 10 11 12 13 1 2 6543
PE
Ph
N
1 2 3 4 5 6 7 8 9 10 11 12 13
B
A
Factory
setting
typical
setting Description
00 : Heating mode “OFF”
01 : Heating mode “ON”
Setting T° for the heating water
(adjustable between 30 and 85°C).
T° min. for the heating water
(adjustable between 15 and 60°C).
10800036: Interface address “0”
= 7
= 6
= 5
= 4
= 3
= 2
= 1
= 0
To be wired in accordance with the applicable regulations.

EN • 18
ENGLISHFRANCAISNEDERLANDSESPAÑOLITALIANODEUTSCH
664Y3000.A
INSTALLATION
RAMVF202
prestige
AF200
Zone Unit / RFF
MCBA
Control Unit
SQK
INSTALLATION OF THREE HEATING CIRCUITS
CONTROLLED BY CONTROL UNIT
General diagram
This is a simple way to control three heating circuits (radiators
or floor heating) with a Control Unit which also provides a
remote control and monitoring of the three circuits.
All circuits can be controlled separately in function of the
outside temperature.
This is the ideal configuration for floor heating with additional
heating provided by radiators.
You can select various heating functions, and program up
to three weekly schedules, as well for the central heating as
for the hot water production.

EN • 19
ENGLISHFRANCAISNEDERLANDSESPAÑOLITALIANODEUTSCH
664Y3000.A
INSTALLATION
DOMESTIC HOT WATER CONNECTION
PRESTIGE SOLO + SMART TANK
- Rinse the installation before connecting the domestic
hot water circuit.
- Fill the tank before filling the heating circuit.
Before any work on the boiler, it is important to
disconnect the power supply.
It is important to carry out all the electrical
connection before changing the MCBA
parameters.
1. T he 12 k ΩNTC sensor must be inserted into the
dywell and connected on terminals 3 and 4. (See
the picture below]..
2. Connect the DHW pump to the dedicated
connector on the internal wiring (See the picture
below].
Optional accessories
Code Description
10800107
Collector 2 circuits DN32 :
Whith integrated wall brackets.
10800107
High temperature kit DN32:
Including: one circulation pump,
two isolating valves, check valve,
two thermometers.
10800142
Connection kit DN32 to the manifold:
Including: two flexible 1"1/2 hoses and
1"1/4 reduction fittings.
5476G003
NTC sensor 12kΩ:
Senses the temperature in the external hot
water tank.
(Delivered with the kit 10800079)
factury
setting
typical
setting Description
Domestic hot water temperature
setting (to be adjusted between 60
and 80°C).
00 : DHW Mode “OFF”
01 : DHW Mode “ON”
12 : Tank with NTC sensor
13 : Tank with control thermostat
prestige
124
5
6
7
3
8
1. Cold water supply tap
2. Check valve
3. Safety group
4. Pressure reducing valve
5. Domestic hot water expansion vessel
6. Thermostatic mixer
7. Drawoff tap
8. By-pass
4 5 61 2 31 2 3 4 5 6 7 8 9 10 11 12 13

EN • 20
ENGLISHFRANCAISNEDERLANDSESPAÑOLITALIANODEUTSCH
664Y3000.A
COMMISSIONING AND MAINTENANCE
COMMISSIONING THE SYSTEM
- Slowly fill the tank and drain it by opening a hot water tap. Drain
all the taps and check that there are no leaks in the domestic hot
water system.
- Fill the whole system up to a minimum pressure of 1 bar
(preferably 1.5 bar), using the boiler’s fill valve. Fill the system
slowly and drain it using the central heating flow pipe manual
air vent. Check that there are no leaks in the central heating
system.
- Purge the circulator(s).
- Open the gas valve, drain the pipe and check that there are no
leaks in the system.
- Check that the siphon is filled.
- Connect the plug to the wall socket and power on the appliance. If
needed, place the room thermostat to its highest position. The
boiler should start. Check the gas pressure and allow the boiler
to heat up for a few minutes. Set the boiler to High Power mode
and check the CO2level (see the table of Technical Characteristics).
Then, set the boiler to Low Power mode and check the CO2
level again (see the table of Technical Characteristics).
- Set the central heating and hot water temperatures following
the values given in the Directions for Use.
- Drain the central heating system again and, if necessary, re-fill it.
- Make sure the central heating system is correctly balanced
and, if necessary, adjust the valves to prevent a greater or
lesser flow than planned to some circuits or radiators.
CHECKING THE SETTINGS
- Check that the parameters are set in accordance with the
user’s needs: see page 3, Directions for Use.
- Check the boiler settings: this task can only be carried out by an
ACV-trained installer or by the ACV maintenance department.
- Set the appliance to High Power mode by simultaneously pressing
the mode and Plus keys.
- Check the dynamic gas pressure at the gas valve (see diagram
below, ref. 1). This must be at least 18 mbars. mbars.
Wait a few minutes for the appliance to heat up to a
minimum temperature of 60°C. Check the CO2setting using a
measurement instrument. Please see in the Technical
Characteristics for optimum value. To increase the CO2value,
turn the venturi screw counterclockwise; turn it clockwise to
reduce the value (see diagram below ref. 2).
Then put the appliance to High Power mode by simultaneously
pressing the mode and Plus keys. Wait a few minutes to
stabilise. Check the CO2value. It should be either equal to the
full power value or a maximum of 0.5% less than this value.
If you record a significant deviation,please contact the ACV
maintenance department.
INSPECTION AND MAINTENANCE
ACV recommends that you have your boilers inspected
and cleaned if need be at least once a year.
Plug out the appliance before undertaking any work, even if only
recording measurements and adjusting the settings.
- Check that the siphon is not fouled, fill it, if need be, and check
that there are no leaks.
- Check that the safety valves are operating correctly.
- Drain the whole system and if necessary re-fill the appliance to
pressure of 1.5 bar.
If you have to refill your circuit more than twice a year,
please contact your installer.
- Check the boiler charge in High Power mode. If there is a
big difference between this value and the original setting, the
deviation could mean a blockage in the air intake pipes or flue
gas extraction pipes, or that the exchanger has become fouled
with an accumulation of dirt.
Réf. 3:
The gas valve
offset setting is
a sealed factory
setting.
In principle,
it may not be
modified.
X 3
2
1
3