DeDietrich Innovens MCA 15 Manual

Innovens EN
Wall-hung gas condensing boilers
MCA 15 - MCA 25
MCA 25/28 MI
Installation and
Service Manual
300022146-001-B

Declaration of conformity
The appliance complies with the standard model described in
declaration of compliance [. It is manufactured and distributed
pursuant to the requirements of european directives.
The original of the declaration of compliance is available from the
manufacturer.
EG - VERKLARING VAN OVEREENSTEMMING
EC - DECLARATION OF CONFORMITY
EG - KONFORMITÄTSERKLÄRUNG
DÉCLARATION DE CONFORMITÉ CE
Fabrikant/Manufacturer/Hersteller/Fabricant : Remeha B.V.
Adres/Address/Adresse : Kanaal Zuid 110
Stad,Land/City,Country/Land,Ort/Ville, pays : Postbus 32, NL-7300 AA Apeldoorn
verklaart hiermede dat de toestel(len) : MCA ../.. (MI) (BIC)
this is to declare that the following product(s) :
erklärt hiermit das die Produk(te) :
déclare ici que les produit(s) suivant(s) :
op de markt gebracht door : De Dietrich Thermique
distributor : 57, rue de la Gare, F-67580
Vertreiber :
Commercialisé (s) par :
voldoet/voldoen aan de bepalingen van de onderstaande EEG-richtlijnen:
is/are in conformity with the following EEC-directives:
den Bestimmungen der nachfolgenden EG-Richtlinien entspricht/entsprechen:
répond/répondent aux directives CEE suivantes:
EEG-Richtlijn: 90/396/EEG toegepaste normen:
EEC-Directive: 90/396/EEC tested and examined to the following norms:
EG-Richtlinie: 90/396/EWG verwendete Normen, normes appliquées:
CEE-Directive: 90/396/CEE EN 297(1994*), 483(1999*), 677(1998*)
92/42/EEG
92/42/EEC
92/42/EWG
92/42/CEE
2006/95/EEG EN 50165(1997*), EN 60335-1(1994*)
2006/95/EEC EN 60335-2-102(2004*) 08
2006/95/EWG
2006/95/CEE
2004/108/EEG EN 50165(1997*)
2004/108/EEC EN 55014-2(1997*), EN 55014-1(2000*),
2004/108/EWG EN 61000-3-2(2000*), 61000-3-3(1995*)
2004/108/CEE
97/23/EEG (art. 3, lid 3)
97/23/EEC (article 3, sub 3)
97/23/EWG (Art. 3, Abzats 3)
97/23/CEE (art.3 section 3)
*) inclusief (eventuele) aanvulling, including (if any) competion
einschließlich (falls vorhanden) Vervollständigung, y compris (le cas échéant) complément
Apeldoorn, decembre 2009
W.F. Tijhuis
Approval manager
703/2009/12/128
C002860-A
MCA 15 - MCA 25 MCA 25/28 MI

Contents
1 Introduction ................................................................................................6
1.1 Used symbols .......................................................6
1.2 Abbreviations ........................................................6
1.3 General ..................................................................7
1.3.1 Manufacturer's liability .............................................7
1.3.2 Installer's liability .....................................................7
1.4 Homologations ......................................................7
1.4.1 Certifications ...........................................................7
1.4.2 Gas categories ........................................................8
1.4.3 Additional Directives ................................................8
1.4.4 Factory test .............................................................8
2Safety instructions and recommendations ..............................................9
2.1 Safety instructions ...............................................9
2.2 Recommendations ................................................9
3Technical description ..............................................................................11
3.1 General description ............................................11
3.2 Main parts ............................................................11
3.3 Operating principle .............................................12
3.3.1 Skeleton Diagrams ................................................12
3.3.2 Shunt pump ...........................................................12
3.3.3 Water flow rate ......................................................13
3.4 Technical characteristics ...................................13
3.4.1 Sensor characteristics ...........................................14
4 Installation ................................................................................................16
4.1 Regulations governing installation ...................16
4.2 Package list .........................................................16
4.2.1 Standard delivery ..................................................16
4.2.2 Accessories ...........................................................16
4.3 Choice of the location ........................................17
4.3.1 Data plate ..............................................................17
4.3.2 Location of the appliance ......................................18
4.3.3 Ventilation .............................................................18
4.3.4 Main dimensions ...................................................19
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4.4 Installing the mounting frame ...........................20
4.5 Positioning the boiler .........................................21
4.6 Hydraulic connections .......................................22
4.6.1 Flushing the system ..............................................22
4.6.2 Connection of the heating circuit ...........................22
4.6.3 Hydraulic connection of the water circuit for domestic
use ........................................................................23
4.6.4 Connecting the expansion vessel .........................23
4.6.5 Connecting the condensate discharge pipe ..........24
4.6.6 Filling the siphon ...................................................24
4.7 Gas connection ...................................................25
4.8 Flue gas system connections ............................26
4.8.1 Classification .........................................................26
4.8.2 Lengths of the air/flue gas pipes ...........................27
4.9 Installing the outside sensor .............................28
4.9.1 Choice of the location ............................................28
4.9.2 Installing the outside sensor ..................................28
4.10 Electrical connections ........................................29
4.10.1 Control unit ............................................................29
4.10.2 Recommendations ................................................30
4.10.3 Position of the PCBs .............................................31
4.10.4 Accessing the connection terminal blocks ............32
4.10.5 Connecting a direct heating circuit ........................34
4.10.6 Connecting a direct heating circuit and a domestic hot
water tank ..............................................................35
4.10.7 Connecting two circuits and a domestic hot water tank
before the mixing tank ...........................................37
4.10.8 Connecting two circuits and a domestic hot water tank
after the mixing tank ..............................................39
4.10.9 Hot water storage tank connection ........................41
4.10.10 Pool connection .....................................................46
4.10.11 Connecting a mixed tank .......................................48
4.10.12 Connecting the options .........................................49
4.10.13 Connection in cascade ..........................................50
4.11 Electrical diagram ...............................................53
4.12 Filling the system ...............................................54
4.12.1 Water treatment ....................................................54
4.12.2 Filling the system ..................................................56
5 Start-up ......................................................................................................57
5.1 Control panel .......................................................57
5.1.1 Description of the keys ..........................................57
5.1.2 Description of the display ......................................58
5.1.3 Access to the various browsing levels ..................60
5.1.4 Browsing in the menus ..........................................62
5.2 Check points before commissioning ................63
5.2.1 Preparing the boiler for commissioning .................63
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5.2.2 Gas circuit .............................................................64
5.2.3 Hydraulic circuit .....................................................64
5.2.4 Electrical connections ...........................................64
5.3 Putting the appliance into operation ................65
5.4 Gas settings ........................................................66
5.4.1 Adapting to another gas type ................................66
5.4.2 Setting the air/gas ratio (Full load) ........................67
5.4.3 Setting the air/gas ratio (Part load) ......................69
5.4.4 Basic setting for the gas/air ratio ...........................71
5.5 Checks and adjustments after
commissioning ...................................................71
5.5.1 Displaying the parameters in extended
mode .....................................................................71
5.5.2 Setting the parameters specific to the
installation .............................................................72
5.5.3 Naming the circuits and generators ......................75
5.5.4 Setting the heating curve ......................................76
5.5.5 Finalizing work ......................................................78
5.6 Reading out measured values ...........................78
5.7 Changing the settings ........................................79
5.7.1 Language selection ...............................................80
5.7.2 Calibrating the sensors .........................................80
5.7.3 "Professional" settings ..........................................82
5.7.4 Configuring the network ........................................88
5.7.5 Returning to the factory settings ...........................96
6 Switching off the appliance .....................................................................97
6.1 Installation shutdown .........................................97
6.2 Frost protection ..................................................97
7 Checking and maintenance .....................................................................98
7.1 General instructions ...........................................98
7.2 Chimney sweep instructions .............................98
7.3 Customising maintenance .................................99
7.3.1 Maintenance message ..........................................99
7.3.2 Installer's contact details .....................................100
7.4 Standard inspection and maintenance
operations .........................................................100
7.4.1 Checking the hydraulic pressure .........................101
7.4.2 Checking the opened expansion vessel ..............101
7.4.3 Checking the ionisation current ...........................101
7.4.4 Checking the transfer capacity ............................101
7.4.5 Checking the tightness of the combusted gases
evacuation and air inlet connections ...................101
7.4.6 Checking combustion ..........................................102
7.4.7 Checking the automatic air vent ..........................103
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7.4.8 Checking the safety valve ...................................104
7.4.9 Checking the siphon ............................................104
7.4.10 Checking the burner and cleaning the heat
exchanger ...........................................................105
7.5 Specific maintenance operations ....................106
7.5.1 Replacing the ionisation/ignition electrode ..........106
7.5.2 Cleaning the plate exchanger (domestic hot water
end) and the water filter cartridge .......................106
7.5.3 Replacing the 3-way valve ..................................109
7.5.4 Replacing the non-return valve ...........................110
7.5.5 Assembling the boiler ..........................................111
8 Troubleshooting .....................................................................................112
8.1 Messages (Code type Bxx or Mxx) ..................112
8.2 Message history ................................................114
8.3 Faults (Code type Lxx or Dxx) .........................115
8.3.1 Deletion of sensors from the memory in the
PCB .....................................................................123
8.3.2 Deleting the IOBL 3WV modules from the memory in
the PCB ..............................................................123
8.4 Failure history ...................................................124
8.5 Parameter and input/output check (mode
tests) ..................................................................125
9 Spare parts ..............................................................................................129
9.1 General ..............................................................129
9.2 Spare parts ........................................................129
9.2.1 Casing .................................................................130
9.2.2 Heat exchanger and burner ................................131
9.2.3 Fan ......................................................................132
9.2.4 Control panel .......................................................133
9.2.5 Connecting pipes (MCA 15 - MCA 25) ................134
9.2.6 Connecting pipes (MCA 25/28 MI) ......................135
9.2.7 Spare parts list ....................................................136
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1 Introduction
1.1 Used symbols
In these instructions, various danger levels are employed to draw the
user's attention to particular information. In so doing, we wish to
safeguard the user's safety, obviate hazards and guarantee correct
operation of the appliance.
DANGER
Risk of a dangerous situation causing serious physical
injury.
WARNING
Risk of a dangerous situation causing slight physical
injury.
CAUTION
Risk of material damage.
Signals important information.
¼ Signals a referral to other instructions or other pages in the
instructions.
1.2 Abbreviations
43CE: Collective conduit for sealed boiler
4DHW: Domestic hot water
4Interscenario switch: Home automation switch that can be used
to centralise and control several scenarios
4Hi: Lower heating value LHV
4Hs: Higher heating value HHV
4IOBL: Carrier current home automation bus
4PPS: Polypropylene hardly inflammable
4PCU: Primary Control Unit - PCB for managing burner operation
4PSU: Parameter Storage Unit - Parameter storage for PCBs
PCU and SU
4SCU: Secondary Control Unit - Diematic iSystem control panel
PCB
4SU: Safety Unit - Safety PCB
43WV: 3-way valve
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1.3 General
1.3.1. Manufacturer's liability
Our products are manufactured in compliance with the requirements
of the various european applicable Directives. They are therefore
delivered with [ marking and all relevant documentation.
In the interest of customers, we are continuously endeavouring to
make improvements in product quality. All the specifications stated in
this document are therefore subject to change without notice.
Our liability as the manufacturer may not be invoked in the following
cases:
4Failure to abide by the instructions on using the appliance.
4Faulty or insufficient maintenance of the appliance.
4Failure to abide by the instructions on installing the appliance.
1.3.2. Installer's liability
The installer is responsible for the installation and inital start up of the
appliance. The installer must respect the following instructions:
4Read and follow the instructions given in the manuals provided
with the appliance.
4Carry out installation in compliance with the prevailing legislation
and standards.
4Perform the initial start up and carry out any checks necessary.
4Explain the installation to the user.
4Warn the user of the obligation to check the appliance and
maintain it in good working order.
4Give all the instruction manuals to the user.
1.4 Homologations
1.4.1. Certifications
CE identification no PIN 0063BT3444
NOx classification 5 (EN 297 pr A3, EN 656)
Type of connection Chimney: B23 , B33
Flue gas outlet: C13 , C33, C43, C53, C63, C83 , C93
MCA 15 - MCA 25 MCA 25/28 MI 1. Introduction
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1.4.2. Gas categories
Gas category Gas type Connection pressure (mbar)
II2ESi3P Natural gas H (G20) 20
Natural gas L (G25) 25
Propane (G31) 37
The boiler is preset in the factory to operate on natural gas H (G20).
¼ For operation on another type of gas, see chapter: "Adapting
to another gas type", page 66.
1.4.3. Additional Directives
Apart from the legal provisions and Directives, the additional
Directives described in these instructions must also be observed.
For all provisions and Directives referred to in these instructions, it is
agreed that all addenda or subsequent provisions will apply at the
time of installation.
WARNING
Installation of the appliance must be done by a qualified
engineer in accordance with prevailing local and national
regulations.
1.4.4. Factory test
Before leaving the factory, each boiler is set for optimum performance
and tested to check the following items:
4Electrical safety
4Adjustment (CO2)
4Domestic hot water mode (Only on models with domestic hot water
production)
4Water tightness
4Gas tightness
4Parameter settings
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2 Safety instructions and
recommendations
2.1 Safety instructions
DANGER
If you smell gas:
1. Do not use a naked flame, do not smoke, do not
operate electrical contacts or switches ( doorbell,
light, motor, lift, etc..).
2. Isolate the gas supply.
3. Open the windows.
4. Trace possible leaks and seal them immediately.
5. If the gas leak is before the gas meter, contact the
gas supplier.
DANGER
If you smell flue gases:
1. Switch the appliance off.
2. Open the windows.
3. Trace possible leaks and seal them immediately.
2.2 Recommendations
WARNING
4Installation and maintenance of the boiler must be
carried out by a qualified professional in compliance
with prevailing local and national regulations.
4When working on the boiler, always disconnect the
boiler from the mains and close the main gas inlet
valve.
4After maintenance or repair work, check all
installations to ensure that there are no leaks.
CAUTION
The boiler must be installed in a frost-free environment.
Keep this document close to the place where the boiler is
installed.
Casing components
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Only remove the casing for maintenance and repair operations. Put
the casing back in place after maintenance and repair operations.
Instructions stickers
The instructions and warnings affixed to the appliance must never be
removed or covered and must remain legible during the entire lifespan
of the boiler. Immediately replace damaged or illegible instructions
and warning stickers.
Modifications
Modifications may only be made to the boiler after the written
permission of De Dietrich Thermique to do so.
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3 Technical description
3.1 General description
Wall-hung gas condensing boilers
4High efficiency heating.
4Low pollutant emissions.
4Top of the range electronic DIEMATIC iSystem control panel
4Installation and connection facilitated by the mounting frame
delivered with the appliance.
4Flue gas discharge via a forced flue, chimney, bi-flow or 3CE type
connection.
4MCA 15 - MCA 25: Heating only (Possibility of producing domestic
hot water via an independent tank which has been installed
separately).
4MCA 25/28 MI: Heating and micro-storage domestic hot water
production.
3.2 Main parts
1Flue gas discharge pipe
2Casing/air box
3Outlet for measuring combustion gases
4Mixer pipe
5Heating flow hose
6Áir intake silencer
7Box for the control PCBs
8Combined venturi and gas valve unit
9Flow end hydrobloc
10 Safety valve outlet pipe
11 Siphon
12 Control panel
13 Shunt pump
14 Return end hydrobloc
15 Plate heat exchanger (DHW circuit) (Only on models with
domestic hot water production)
16 Inverter valve
17 Condensate receiver tank
18 Fan
19 Heat exchanger (Heating circuit)
T001867-C
2
15
14
13
16
17
18
19
20
21
3
4
5
6
7
8
9
10
11
12
1 22
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20 Expansion vessel
21 Ignition/ionization electrode
22 Air intake
3.3 Operating principle
3.3.1. Skeleton Diagrams
1Heat exchanger (Heating circuit)
2Hydrobloc
3Plate heat exchanger (DHW circuit) (Only on models with
domestic hot water production)
4Heating flow
5Domestic hot water outlet
6Domestic cold water inlet
7Heating return
8Inverter valve
9Shunt pump (Heating circuit)
10 Expansion vessel
3.3.2. Shunt pump
HManometric height central heating circuit
QWater flow
The boiler is fitted with a modulating pump which is regulated by the
control panel as a fuction of ΔT.
The graph shows the manometric height at various outputs. The
parameters MIN.PUMP SPEED and MAX.PUMP SPEED are used to
modify the pump settings. If flow noise can be heard in the system, it
is possible to reduce the maximum pump speed with the parameter
MAX.PUMP SPEED (First of all, vent the heating system). If
circulation in the radiators is too low or the radiators do not fully heat
up, increase the minimum pump speed with the parameter
MIN.PUMP SPEED.
¼ See chapter: ""Professional" settings", page 82.
T001868-B
1
2
3
10
9
8
4 5 6 7
T002537-B
0 200 400 600 800 1000 1200
Q (l/h)
10 kW
15 kW
20 kW
25 kW
615
545
435
295
437 623 830 1037
0
100
200
300
400
500
700
H(mbar)
600
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3.3.3. Water flow rate
The boiler's modulating control system limits the maximum difference
in temperature between the heating flow and return and the maximum
speed at which the flow temperature increases. In this way, the boiler
does not require a minimum water flow rate.
Δp Pressure drop
QWater flow (max = 1680 l/h)
3.4 Technical characteristics
Boiler type MCA 15 MCA 25 MCA 25/28 MI
General
Flow rate setting Adjustable Modulating, Start/Stop, 0 - 10 V
Nominal output (Pn)
Heating System (80/60 °C)
minimum-maximum kW 3,0 - 14,5 5,0 - 24,1 5,0 - 24,1
Factory setting kW 14,5 24,1 19,4
Nominal output (Pn)
Heating System (50/30 °C)
minimum-maximum kW 3,4 - 15,8 5,6 - 25,5 5,6 - 25,5
Factory setting kW 15,8 25,5 20,5
Nominal output (Pn)
DHW System
minimum-maximum kW - - 5,0 - 28,6
Factory setting kW - - 28,6
Nominal input (Qn)
Heating System (Hi)
minimum-maximum kW 3,1 - 15,0 5,2 - 25,0 5,2 - 25,0
Factory setting kW 15,0 25,0 20,1
Nominal input(Qn)
Heating System (Hs)
minimum-maximum kW 3,4 - 16,7 5,8 - 27,8 5,8 - 27,8
Factory setting kW 16,7 27,8 22,3
Nominal input (Qnw)
DHW System (Hi)
minimum-maximum kW - - 5,2 - 28,0
Factory setting kW - - 28,0
Nominal input (Qnw)
DHW System (Hs)
minimum-maximum kW - - 5,8 - 31,1
Factory setting kW - - 31,1
Heating efficiency under full load (Hi) (80/60 °C) - % 96,5 96,3 96,3
Heating efficiency under full load (Hi) (50/30 °C) - % 105,3 102,0 102,0
Heating efficiency under partial load (Hi) (Return
temperature 60°C)
- % 94,9 96,1 96,1
Heating efficiency under partial load (EN 92/42)
(Return temperature 30°C)
- % 108,5 108,0 108,0
Data on the gases and combustion gases
Gas consumption - Natural gas H (G20) minimum-maximum m3/h 0,33 - 1,59 0,55 - 2,65 0,55 - 2,96
Gas consumption - Natural gas L (G25) minimum-maximum m3/h 0,38 - 1,85 0,64 - 3,08 0,64 - 3,45
Gas consumption - Propane G31 minimum-maximum m3/h 0,13 - 0,61 0,21 - 1,02 0,21 - 1,15
NOx-Emission per year or (n =1) mg/kWh 33 38 38
Mass flue gas flow rate minimum-maximum kg/h 5,3 - 25,2 8,9 - 42,1 8,9 - 47,1
Flue gas temperature minimum-maximum °C 30 - 65 30 - 80 30 - 85
(1) Front panel removed
T001978-A
0
100
200
300
400
500
600
700
0500
1037437
15001000 2000 2500
∆p [mbar]
Q [l/h]
623 830
∆T = 20K
10 kW
15 kW
20 kW
25 kW
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Boiler type MCA 15 MCA 25 MCA 25/28 MI
Maximum counter pressure Pa 80 120 130
Characteristics of the heating circuit
Water content l 1,7 1,7 1,7
Water operating pressure minimum kPa (bar) 80 (0,8) 80 (0,8) 80 (0,8)
Water operating pressure (PMS) maximum kPa (bar) 300 (3,0) 300 (3,0) 300 (3,0)
Water temperature maximum °C 110 110 110
Operating temperature maximum °C 90 90 90
Manometric height central heating circuit (∆T = 20K) mbar 545 295 295
Characteristics of the domestic hot water circuit
Specific hot water flow D (60 °C) l/min - - 8,2
Specific hot water flow D (40 °C) l/min - - 13,7
Domestic water resistance mbar - - 490
Flow rate threshold minimum l/min - - 1,2
Water content l - - 0,33
Operating pressure (Pmw) maximum kPa (bar) - - 800 (8,0)
Electrical characteristics
Power supply voltage VAC 230 230 230
Power consumption - Full load maximum W 101 116 124
Factory setting W 63 76 76
Power consumption - Part load maximum W 25 25 25
Power consumption - Standby maximum W 4 4 4
Electrical protection index IPX4D IPX4D IPX4D
Other characteristics
Weight (empty) Total kg 43 43 44
Mounting(1) kg 36 36 37
Acoustic level at 1 meter at high speed dBA 35 42 44
(1) Front panel removed
3.4.1. Sensor characteristics
Outside sensor Outlet sensor circuit B+C
Domestic hot water sensor
Boiler sensor
Return sensor
-20 °C 2392 ¨ 0 °C 32014 ¨ -20 °C 98932 ¨
-16 °C 2088 ¨ 10 °C 19691 ¨ -10 °C 58879 ¨
-12 °C 1811 ¨ 20 °C 12474 ¨ 0 °C 36129 ¨
-8 °C 1562 ¨ 25 °C 10000 ¨ 10 °C 22804 ¨
-4 °C 1342 ¨ 30 °C 8080 ¨ 20 °C 14773 ¨
0 °C 1149 ¨ 40 °C 5372 ¨ 25 °C 12000 ¨
4 °C 984 ¨ 50 °C 3661 ¨ 30 °C 9804 ¨
8 °C 842 ¨ 60 °C 2535 ¨ 40 °C 6652 ¨
12 °C 720 ¨ 70 °C 1794 ¨ 50 °C 4607 ¨
16 °C 616 ¨ 80 °C 1290 ¨ 60 °C 3252 ¨
20 °C 528 ¨ 90 °C 941 ¨ 70 °C 2337 ¨
24 °C 454 ¨ 80 °C 1707 ¨
3. Technical description MCA 15 - MCA 25 MCA 25/28 MI
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Outside sensor Outlet sensor circuit B+C
Domestic hot water sensor
Boiler sensor
Return sensor
90 °C 1266 ¨
100 °C 952 ¨
110 °C 726 ¨
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4 Installation
4.1 Regulations governing installation
WARNING
Installation of the appliance must be done by a qualified
engineer in accordance with prevailing local and national
regulations.
4.2 Package list
4.2.1. Standard delivery
The delivery includes:
4The boiler, fitted with a connection cable
4Mounting frame
4Mounting template
4Connection kit
4Run-off collector for siphon and safety valve
4Outside sensor
4Installation and Service Manual
4User Guide
4.2.2. Accessories
Various options are available depending on the configuration of the
installation:
Boiler options Control system options
Description package Description package
Stand-off frame HR39 RX12 cable AD134
Pipework kit for stand-off frame HR40 TELCOM 2 voice remote monitoring module AD152
Pipe cover HR42 Flow sensor AD199
Flue gas thermostat HR43 DHW sensor AD212
adapter 80/125 HR38 Optional PCB for 3-way valve AD249
adapter 80-80 HR46 Hot water storage tank sensor AD250
Exchanger cleaning kit HR44 Outside radio-controlled temperature sensor AD251
Boiler body cleaning kit HR45 Boiler radio module AD252
DHW tank BS60 EE54 Radio remote control AD253
Kit for connection between MCA and BS60 EA138 Interactive remote control AD254
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Boiler options Control system options
Description package Description package
DHW tank SR130 EE22 Room sensor FM52
Kit for connection between MCA and SR130 EA137
4.3 Choice of the location
4.3.1. Data plate
The data plate located on top of the boiler provides important
information on the appliance: serial number, model, gas category, etc.
T001539-B
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4.3.2. Location of the appliance
4Before mounting the boiler, decide on the ideal position for
mounting, bearing the Directives and the dimensions of the
appliance in mind.
4When choosing the position for mounting the boiler, bear in mind
the authorised position of the combustion gas discharge outlets
and the air intake opening.
4To ensure adequate accessibility to the appliance and facilitate
maintenance, leave enough space around the boiler.
WARNING
4Fix the appliance to a solid wall capable of bearing
the weight of the appliance when full of water and fully
equipped.
4It is forbidden to store inflammable products and
materials in the boiler room or close to the boiler,
even temporarily.
CAUTION
4The boiler must be installed in a frost-free
environment.
4A connection to the mains drainage system for the
discharge of condensate must be available close to
the boiler.
4.3.3. Ventilation
(1) Distance between the front of the appliance and the
internal wall of the cupboard.
(2) Distance to allow on either side of the appliance.
If the boiler is installed in a closed box, respect the minimum
dimensions given in the diagram opposite. Also allow openings to
obviate the following hazards:
4Accumulation of gas
4Heating of the box
Minimum cross section of the openings: S1 + S2 = 150 cm2
T001583-A
450
min.1000 450
min.
250
min.
250
690
T001584-A
min. 550
min.550
min. 250
50 (2)
min. 250
100
min. (1)
4. Installation MCA 15 - MCA 25 MCA 25/28 MI
18 29/04/2010 - 300022146-001-B