ACV Prestige Solo 24, Prestige Solo 32, Prestige Excellence 24, Prestige Excellence 32 Installation, Operating and Servicing Instructions

Prestige Excellence 24	- 32	/ MK2
Solo 24	- 32	/ MK2

MCBA-5

Installation, Operating and

Servicing Instructions

ENGLISH

español NEDERLANDS FRANCAIS

ITALIANO

deutsch

664Y4000

EN • 1

ENGLISH

español NEDERLANDS FRANCAIS

ITALIANO

deutsch

INDEX

Warning	3
Who should read these instructions	3
Symbols	3
Recommendations	3
Applicable standards	3
Warnings	3

introduction	4
Description of the specifications	4
Frost protection	4
users guide	6
Directions for use	6
Settings the parameters	6
Technical characteristics	7
Natural gas model	7
Propane gas model	8
Domestic hot water features	8
Gas categories	9
Diagrams of the pressure drops	10
Electrical connection	11
Wiring diagram	11
installation instructions	12
Dimensions	12
Boiler room	12
Wall mounting of the boiler	12
Distances of hydraulic connections	13
installation	14
Connection to the chimney	14
Domestic hot water connection : Prestige Excellence	15
Domestic hot water connection : Prestige Solo	16
Heating connections	17
Connection to the gas	17
Installation of simple heating circuit controlled by room thermostat ACV 15	18
Installation of simple heating circuit controlled by Room Unit	19
Installation of two heating circuits controlled by room thermostat ACV 15 and AM3-11 module	20
Installation of two heating circuits controlled by Room Unit and ZMC-1 module	22
Installation of a Prestige excellence or Prestige Solo + a DHW tank without hot water priority	24
Commissioning and maintenance	26
Commissioning the system	26
Inspection and maintenance	26
Temperature sensor resistance tables	26
Disassembling the burner	27
Disassembling and checking the electrode	27
Disassembling the heat exchanger	27
Cleaning the heat exchanger	27
mcba parameters for the specialist	28
Standby Mode	28
Settings the MCBA parameters	29
Request for information on the installation	30
Entering the code	31
MCBA parameters with code restricted access	32
Communication Mode	37
Error Mode	37
MCBA Bloking and error codes	38
Safety stop + resolution of the fault	38
SPARE PARTS	See at the end of this manual

664Y4000

EN • 2

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:

Essential instruction for the correct operation of the installation.

Essential instruction for the safety of persons and the environment.

Danger of electrocution.

Danger of burns

WARNINGS

•The burners are preset in our factory for use with natural gas [equivalent to G20].

•An ajustement of the CO2 is not allowed in Belgium I 2E(s) B.

•Specific regulation applicable in Belgium:

The CO2 level, 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).

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.

•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.

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.

ENGLISH

español NEDERLANDS FRANCAIS

ITALIANO

deutsch

664Y4000

EN • 3

ENGLISH

español NEDERLANDS FRANCAIS

ITALIANO

deutsch

introduction

Description of the technical specifications

The Prestige is a wall-hung condensing boiler meeting the requirements of current “HR-Top” standards in Belgium. The boiler is certified compliant with “EC” standards as a connected appliance: C13(x) - C33(x) - C33s - C43(x) - C53 - C83(x), but it can also be connected as an open appliance in category B23 or as an appliance of category B23P, which can operate with a positive pressure.

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 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 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. To simplify the installation of such a combination, ACV has designed a specific hot water connection kit, easy to be incorporated inside the casing.

• Prestige Excellence: combines all the advantages of ACV’s Tank-in-Tank systems with the comfort and space saving of a wall-mounted boiler: in a 63 cm wide casing, it includes a 62-litre stainless steel Tank-in-Tank. The Prestige 32 Excellence supplies 258 litres of water at a temperature of 40°C in 10 minutes: In addition to their exceptional hot water supply capability, the Prestige Excellence tank-in-tanks feature:

-A solution for scale deposits: thanks to the specially designed corrugations, the hot water tank expands and contracts during the heating cycle, preventing the formation of scale.

-A guarantee against the risk of Legionnellae Disease and bacteria: the hot water tank is fully immersed in the primary circuit and the hot water is constantly kept at a temperature above 60°C.

-Exceptional resistance against corrosion and aggression: provided by the stainless steel.

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.

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EN • 4

		introduction	ENGLISH
	Prestige Solo
Chimney connection
[concentric tubes Ø 80/125 mm]
Burner, premix and modulating			FRANCAIS
		Pump, central heating
Heat exchanger, stainless steel
		Electrical panel
		[The control boxes on
		the rear are optional]
Flue tube			NEDERLANDS
		Control panel
	Prestige excellence
		Burner, premix	español
		and modulating
Flue tube
[concentric tubes Ø 80/125 mm]
		Manual air vent
Loading pump with		Water heater 62 litres
integrated air vent
		Heat exchanger,	ITALIANO
Pump, central heating		stainless steel
		Hot water storage
Electrical panel		tank, stainless steel
[The control boxes on
the rear are optional]
		Expansion vessel
		[depend of countries]
Control panel		Bracket for expansion vessel	deutsch
664Y4000	EN • 5

ENGLISH

español NEDERLANDS FRANCAIS

ITALIANO

deutsch

Users guide

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

Start/Stop	Pressure
switch	gauge

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

Also see the user label located inside the valve on the control panel:

Setting the domestic hot water temperature

(Hot water temperature)

-Press Mode: The screen displays PARA.

-Press Step: the first character is 1 and 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 2 and 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 3 and 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 4 and 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 E as 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.

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EN • 6

technical characteristics

NAtURAL GAS MODEL			Solo	Excellence
Central heating		24	32	24	32
Max. Input 80/60°C	kW	24	32	24	32
Min. Input 80/60°C	kW	5,9	5,9	5,9	5,9
Max. output 80/60°C	kW	23,4	31	23,4	31
Min. output 80/60°C	kW	5,8	5,8	5,8	5,8
Efficiency 30% load [EN677]	%	109	109	109	109
Flue gases
CO emissions max. / min. Input	mg/kWh	45 / 20	52 / 20	45 / 20	52 / 20
NOx emissions [EN483]	mg/kWh	66	66	66	66
NOx classification [EN483]		5	5	5	5
Flue gas temperature — max. Input 80/60°C	°C	70	76	70	76
Flue gas temperature — max. Input 50/30°C	°C	37	39	37	39
Mass flow rate of combustion products	kg/h	38	52	38	52
Flue gas pipe - Max. pressure drop	Pa	130	130	130	130
Concentric flue gas channel maximum length Ø 80 / 125 mm	m	20	20	20	20
Gas
Natural gas pressure	mbar	20/25	20/25	20/25	20/25
G20 gas flow rate	m3/h	2,5	3,4	2,5	3,4
G25 gas flow rate	m3/h	3,0	3,9	3,0	3,9
CO2 max. Input G20/25 (with front panel closed)	% CO2	9,3	9,3	9,3	9,3
CO2 max. Input G20/25 (with front panel open)	% CO2	9,0	9,0	9,0	9,0
CO2 min. Input G20/25 (with front panel closed)	% CO2	9,2	9,2	9,2	9,2
Hydraulic parameters
Max. operating temperature	°C	90	90	90	90
Boiler water capacity	L	8	8	16	16
Domestic hot water circuit capacity	L	—	—	54	54
Maximum operating pressure central heating	bar	3	3	3	3
Heat exchanger pressure drop [∆T = 20°C]	mbar	131	210	131	210
Capacity of the expansion vessel (depend of countries)	L	—	—	12	12
Electrical connection
Class	IP	30	30	30	30
Supply voltage	V/Hz	230 / 50	230 / 50	230 / 50	230 / 50
Maximum absorbed electrical power	A	0,8	0,8	1,2	1,2
Weight empty	kg	48	48	92	92

ENGLISH

español NEDERLANDS FRANCAIS

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deutsch

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EN • 7

ENGLISH

español NEDERLANDS FRANCAIS

ITALIANO

deutsch

technical characteristics

PROPANE MODEL			Solo P	Excellence P
Central heating		24	32	24	32
Max. Input 80/60°C	kW	24	30,5	24	30,5
Min. Input 80/60°C	kW	5,9	5,9	5,9	5,9
Max. output 80/60°C	kW	23,4	29,6	23,4	29,6
Min. output 80/60°C	kW	5,8	5,8	5,8	5,8
Efficiency 30% load [EN677]	%	109	109	109	109
Flue gases
Flue gas pipe - Max. pressure drop	Pa	130	130	130	130
Concentric flue gas channel maximum length Ø 80 / 125 mm	m	20	20	20	20
Gas
Propane gas pressure	mbar	30 / 37 / 50	30 / 37 / 50	30 / 37 / 50	30 / 37 / 50
G31 gas flow rate	m3/h	0,98	1,3	0,98	1,3
CO2 max. Input G31 (with front panel closed)	% CO2	11	11	11	11
CO2 max. Input G31 (with front panel open)	% CO2	10,7	10,7	10,7	10,7
CO2 max. Input G31 (with front panel closed)	% CO2	10,9	10,9	10,9	10,9
Hydraulic parameters
Max. operating temperature	°C	90	90	90	90
Boiler water capacity	L	8	8	16	16
Domestic hot water circuit capacity	L	—	—	54	54
Maximum operating pressure central heating	bar	3	3	3	3
Heat exchanger pressure drop [∆T = 20°C]	mbar	131	210	131	210
Capacity of the expansion vessel (depend of countries)	L	—	—	12	12
Electrical connection
Class	IP	30	30	30	30
Supply voltage	V/Hz	230 / 50	230 / 50	230 / 50	230 / 50
Maximum absorbed electrical power	A	0,8	0,8	1,2	1,2
Weight empty	kg	48	48	92	92

DOMESTIC HOT WATER FEATURES

Operating conditions at 80°C		Excellence 24	Excellence 32
Peak flow at 40°C [∆T = 30°C]	L/10’	175	224
Peak flow at 40°C [∆T = 30°C]	L/60’	733	835
Constant flow at 40°C [∆T = 30°C]	L/h	653	745
Peak flow atv 60°C [∆T = 50°C]	L/10’	102	103
Peak flow at 60°C [∆T = 50°C]	L/60’	352	353
Constant flow at 60°C [∆T = 50°C]	L/h	316	320
Pre-heat time	minutes	27	25

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technical characteristics

				gas categories
		I2E(S)B	II2H3B/P	II2H3P	II2E3B/P	II2Er3P	II2L3B/P	II2L3P	I3P
	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
IE	Ireland
IT	Italy
LU	Luxembourg
LT	Lithuania
NL	Netherlands
PL	Poland
PT	Portugal
SI	Slovenia
SK	Slovakia
SE	Sweden

ENGLISH

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664Y4000

EN • 9

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deutsch

technical characteristics

Diagrams of pressure drop on the heating side

A = Pressure drop of the boiler

B = Pressure available (for the heating circuit) circulator on 1

C = Pressure available (for the heating circuit) circulator on 2

D = Pressure available (for the heating circuit) circulator on 3

		7
		6
			A
		5
	(mH2O)
			D
		4
	Pressure		C
		3
			B
		2
		1

0
0	200	400	600	800	1000	1200	1400	1600	1800	2000	2200	2400

Flow (litres / hour)

Diagrams of pressure drop on the domestic hot water side for the Prestige Excellence

	1,8
	1,6
(bar)	1,4
	1,2
drop
	1
Pressure	0,8
	0,6
	0,4
	0,2
	0
	0		5	10	15	20	25	30

Volume of domestic hot water (litres / minute)

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wiring diagram : Prestige 24-32 / Solo – Excellence

					B. Blue	1.	230V connection cord	12.	NTC2 return sensor
					Bk. Black	2.	Start/Stop switch	13.	NTC3 domestic hot
					Br. Brown	3.	Water tank charging pump socket	14.	NTC5 flue gas temperature
					G. Grey	4.	Heating pump	15.	Room thermostat (optional)
1			Br		Or. Orange	5.	Burner	16.	NTC4 outdoor temperature
					R. Red	6.	Gas valve	17.	NTC6 sensor for the circuit (optional)
			B
					V. Violet	7.	230Volt - 24Volt transformer	18.	Shell B (optional)
			Y/Gr
					W. White	8.	MCBA	19.	Shell A (optional)
230V
					Y/Gr. Yellow/Green	9.	Screen	20.	Zero volt of 24V circuit.
						10.	Water pressure switch	21.	Connection pumps (if two circuit)
						11.	NTC1 flow sensor

2

10

G

Br

Br

Or

Or

X1.1

X2.6

G

X11.

P

B

B

8

V

V

1

X1.2

X2.8

R

t

15

X12.3

X2.9

G

G

2

X1.6

Type 3

X2.10

3

4

B

V

V

X1.4

X3.1

R

R

B

12

X12.2

B

11

13

B

W

W

X1.5

X10

X3.2

Br

12

Br

R

B

Or

B

Or

3

B

X1.3

X3.3

13

X12.1

Bk

B

4

21

X3.4

4

Bk

X2.1

X3.5

B

5

16

5

R

R

14

R

B

Bk

6

5

X2.2

X4.1

B

1

Bk

X2.3

X4.3

Br

Br

7

17

1

2

3

4

5

W

B

8

2

X2.4

X4.2

Br

X2.11

X2.5

R

R

9

20

6

B

Bk

Bk

10

18

X2.12

X7

X5.1

X5.2

Br

Br

11

19

7

9

connection electrical

deutsch	ITALIANO	español	NEDERLANDS	FRANCAIS	ENGLISH

INSTALLATION INSTRUCTIONS

ENGLISH	Dimensions
					E
					D		F
			Solo	Excellence
	A mm		970	1030
	B mm		502	632
FRANCAIS	C mm		107	110	C
	D mm		80	80
	E mm		125	125		A	G
	F mm		300	300
	G mm		930	1000
	H mm		396	535
NEDERLANDS						B	H
	Boiler room					Accessibility
	-	Make sure that all air vents are unobstructed any times.				The appliance must be positioned in such a way to be
	-	Do not store any flammable products in the boiler room.				accessible any time. In addition, the following distances
	-	Do not store any corrosive products, paint, solvents, salts,				are required around the appliance.
		chlorine products and other detergent products near the
		appliance.
	-	If you smell gas, do not switch on any lights, turn off the
español		gas tap at the meter, ventilate the rooms and contact your
		installer.
						Min. 25 mm	Min. 25 mm
	wall mounting of the boiler					M300mmin.
ITALIANO		53,2 mm
		48,4 mm
		101,6 mm
				101,6 mm
				48,4 mm
				53,2 mm

prestige

	deutsch	- The boiler must be mounted on a non-flammable wall.	Min.220mm
		- 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.

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EN • 12

INSTALLATION INSTRUCTIONS

distances of hydraulic connections : Solo

A.Heating circuit supply 1” [F]

B.Heating circuit return 1” [F]

C.Supply to the water heater 1” [F] - With Kit DHW 10800079

D.Return from the water heater 1” [F] - with Kit DHW 10800079

E.Gas connection 3/4” [M]

	prestige
A	120
C	185	C / D / E	49
E	250
D	315	A / B	59
B	380
	502		396

450

70 0

169	120	179
A	120
C	185
E	250
D	315
B	380
	502

distances of hydraulic connections : EXCELLENCE

A.Heating circuit supply 1” [F]

B.Heating circuit return 1” [F]

C.Domestic hot water supply 3/4” [M]

D.Cold water inlet 3/4” [M]

E.Gas connection 3/4” [M]

	prestige
A	94
E	224
D	345
B	354
C	545

A / B / E	61
C / D	206
	535

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EN • 13

ENGLISH

español NEDERLANDS FRANCAIS

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deutsch

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 inbuilt 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 130 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).

-The C33s configuration enables airtight operation in a pre-existing chimney. The combustion air crosses the space between the tubing and the pre-existing chimney. Make sure to clean the pre-existing chimney thoroughly prior to installation, especially if there is soot or tar residue. Make sure that there is a clearance area for the combustion air at least equivalent to the area that would have been provided by separate concentric ducts or air intake ducts.

Table of flue resistance in Pascal

(1Pascal = 0,01 mbar)

		Pipe	Air inlet	Air extraction
		concentric	separate	separate
		Ø 80/125	Ø 80	Ø 80
		mm	mm	mm
	1 m straight pipe	5.0	1.5	2.0
	Pipe with a monitoring	2.5	—	1.0
	section
	90° pipe bend	6.0	1.9	3.4
	45° pipe bend	4.0	1.3	2.3
	Vertical pipe	20.0	—	—
	Horizontal pipe	15.0	—	—

This table is based on the equipment offered by ACV and cannot be applied generally.

Sample calculation:

The diagram below consists of the following parts: pipe with monitoring section + 2 x 90° pipe bends + 2 metres of horizontal pipe + 2 x 45° pipe bends + (2 + 1 + 1) metres of vertical pipe and fall back + discharge.

Therefore, the resistance of this system is as follows:

2.5+ (2 x 6.0) + (2 x 5.0) + (2 x 4.0) + (4 x 5.0) + 20

=72.5 Pa.

This value is less than the maximum authorised resistance, therefore the installation is compliant.

B23 : Connection to an exhaust duct venting the combustion products outside of the installation area, with the combustion air being drawn directly from this area.

B23P : Connection to an exhaust system of the combustion products designed to operate with positive pressure.

C13 : Connection by pipes with horizontal terminal units that simultaneously intake the combustion air and discharge the 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 terminal units that simultaneously intake fresh air and discharge the combustion products outside through openings that are either concentric or close enough together to be subjected to similar wind conditions.

C33s : Connection with an individual system of which the exhaust duct for the combustion products is installed in an exhaust pipe that is part of the building. The appliance, the exhaust duct and the terminal units are certified as an assembly that cannot be dissociated.

C43 : Connection by two ducts to a collective duct system serving more than one appliance; this system of collective ducts features two ducts connected to a terminal unit that simultaneously intakes fresh combustion air and discharges the combustion products outside through openings that are either concentric or close enough together to be subjected to similar wind conditions.

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.

mm 1000

1000	mm

			2000 mm						mm 2000

prestige

664Y4000

EN • 14

Installation

Options for connection to the chimney

C43	C33
B23P		C53
C43
B23	C33s	C13

Domestic HOT WATER CONNECTION prestige Excellence

The Prestige Excellence boiler can be connected directly on the domestic hot water circuit.

Flush out the system before connecting the domestic hot water part.

The installation must be fitted with an approved safety unit with a 6-bar safety valve, a non-return valve and a shut-off valve.

During the heating process, the domestic hot water dilates and the pressure increases. As soon as the pressure exceeds the safety valve setting, the valve opens and discharges a small quantity of water. Using a hot water expansion vessel (2 litres at least) will prevent this phenomenon and reduce water hammer effect.

Drain the tank by opening a hot water tap.

Caution: the presence of air in the circuit usually causes noisy air discharge effects.

The hot water output temperature may reach temperatures in excess of 60°C, which

can cause burns.

We therefore recommend that that you install a thermostatic mixer immediately after installing the appliance.

If stop valves are used in the domestic hot water system, they can cause pressure waves when closed. Use devices designed to reduce water hammer to avoid this phenomenon.

Prestige Excellence

				prestige
1	2	4	3	7
				6
				5

1.Cold water supply tap

2.Non-return valve

3.Safety group

4.Pressure reducing valve

5.Hot water expansion vessel

6.Thermostatic mixer

7.Drawoff tap

ENGLISH

español NEDERLANDS FRANCAIS

ITALIANO

deutsch

664Y4000

EN • 15