Ireland
Innovens
EN
Wall-hung gas condensing boilers
MCA 25/28 BIC
User Guide
300024163-001-B
Contents
1 |
Introduction ................................................................................................ |
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1.1 |
Symbols used ....................................................... |
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1.2 |
Abbreviations ........................................................ |
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1.3 |
General |
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1.3.1 |
Manufacturer's liability ............................................. |
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1.3.2 |
Installer's liability ..................................................... |
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1.3.3 |
User's liability .......................................................... |
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1.4 |
Certifications ......................................................... |
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2 |
Safety instructions and recommendations .............................................. |
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2.1 |
Safety instructions ............................................... |
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2.2 |
Recommendations ................................................ |
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3 |
Description .................................................................................................. |
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3.1 |
Operating principle ............................................... |
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3.1.1 |
Gas/air setting ......................................................... |
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3.1.2 |
Combustion ............................................................. |
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3.1.3 |
Heating and domestic hot water production ............ |
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3.2 |
Main parts ............................................................ |
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3.3 |
Control panel ....................................................... |
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3.3.1 |
Description of the keys .......................................... |
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3.3.2 |
Description of the display ...................................... |
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3.3.3 |
Browsing in the menus .......................................... |
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Operating the boiler ................................................................................. |
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4.1 |
Commissioning the boiler .................................. |
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4.2 |
Reading out measured values ........................... |
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4.3 |
Changing the settings ........................................ |
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4.3.1 |
Setting the set point temperatures ........................ |
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4.3.2 |
Selecting the operating mode ............................... |
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4.3.3 |
Forcing domestic hot water production ................. |
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4.3.4 |
Setting the contrast and lighting on the |
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display ................................................................... |
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4.3.5 |
Setting the time and date ...................................... |
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4.3.6 |
Selecting a timer programme ................................ |
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4.3.7 |
Customising a timer programme ........................... |
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Contents |
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4.4 |
Installation shutdown |
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4.5 |
Frost protection .................................................. |
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5 |
Checking and maintenance |
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5.1 |
General instructions ........................................... |
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5.2 |
Periodic checks .................................................. |
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5.3 ............................................... |
Filling the system |
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5.4 ............................. |
Bleeding the heating system |
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5.5 ..................................... |
Draining the installation |
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6 |
Troubleshooting ....................................................................................... |
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6.1 |
Anti-hunting ........................................................ |
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6.2 |
Messages (Code type Bxx or Mxx) .................... |
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6.3 |
Faults (Code type Lxx or Dxx) ........................... |
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7 |
Technical specifications .......................................................................... |
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7.1 |
Technical specifications |
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Energy savings ......................................................................................... |
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8.1 |
Energy-saving advice ......................................... |
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8.2 |
Recommendations .............................................. |
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9 |
Warranty .................................................................................................... |
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9.1 |
General ................................................................ |
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9.2 |
Warranty terms ................................................... |
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31/08/2011 - 300024163-001-B |
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MCA 25/28 BIC |
1. Introduction |
1Introduction
1.1Symbols used
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.
1.2Abbreviations
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 (Nett)
4Hs: Higher heating value HHV (Gross)
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 - control panel PCB
4SU: Safety Unit - Safety PCB
43WV: 3-way valve
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1. Introduction |
MCA 25/28 BIC |
1.3General
1.3.1.Manufacturer's liability
Our products are manufactured in compliance with the requirements of the various applicable European 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.
4If a maintenance is necessary, warn the user of the obligation to check the appliance and maintain it in good working order.
4Give all the instruction manuals to the user.
1.3.3.User's liability
To guarantee optimum operation of the appliance, the user must respect the following instructions:
4Read and follow the instructions given in the manuals provided with the appliance.
4Call on qualified professionals to carry out installation and initial start up.
4Get your fitter to explain your installation to you.
4Have the required checks and services done.
4Keep the instruction manuals in good condition close to the appliance.
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MCA 25/28 BIC |
1. Introduction |
This appliance is not intended to be used by persons (including children) whose physcial, sensory or mental capacity is impaired or persons with no experience or knowledge, unless they have the benefit, through the intermediary of a person responsible for their safety, of supervision or prior instructions regarding use of the appliance. Care should be taken to ensure that children do not play with the appliance.
1.4Certifications
CE identification no |
PIN 0063BT3444 |
NOx classification |
5 (EN 297 pr A3, EN 656) |
Type of connection |
Chimney: B23 , B33 |
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Flue gas outlet: C13 , C33, C43, C53, C63, C83 , C93 |
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2. Safety instructions and recommendations |
MCA 25/28 BIC |
2Safety instructions and recommendations
2.1Safety 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. Shut off the gas supply.
3. Open the windows.
4. Evacuate the premises.
5. Call your fitter.
DANGER
If you smell flue gases:
1. Switch the appliance off.
2. Open the windows.
3. Evacuate the premises.
4. Call your fitter.
WARNING
Depending on the settings of the appliance:
4 The temperature of the flue gas conduits may exceed 60°C.
4 The temperature of the radiators may reach 85°C.
4 The temperature of the domestic hot water may reach 65°C.
CAUTION
Do not neglect to service the appliance:
4 For completely safe and optimum operation, you must have your boiler regularly serviced by an approved installer.
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MCA 25/28 BIC |
2. Safety instructions and recommendations |
2.2Recommendations
WARNING
Only qualified professionals are authorised to work on the appliance and the installation.
4Regularly check the water pressure in the installation (minimum pressure 0,8 bar, recommended pressure between 1,5 and 2,0 bar).
4Keep the appliance accessible at all times.
4Never remove or cover labels and rating plates affixed to the appliance. Labels and rating plates must be legible throughout the entire lifetime of the appliance.
4The appliance should be on Summer or Antrifreeze mode rather than switched off to guarantee the following functions:
-Anti blocking of pumps
-Frost protection
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3. Description |
MCA 25/28 BIC |
3Description
3.1Operating principle
3.1.1.Gas/air setting
The casing fitted to the boiler is also used as an air box. Air is sucked in by the fan and gas injected into the venturi by the fan intake. The fan rotation speed is set according to the settings parameters, the thermal energy requirement and the temperatures measured by the temperature sensors. The gas and air are mixed in the venturi. The gas/air ratio ensures that the quantities of gas and air are adjusted to each other. This provides optimum combustion on the entire output range. The gas/air mixture is fed into the burner on top of the exchanger.
3.1.2.Combustion
The burner heats the heating water circulating in the heat exchanger. At a return temperature lower than around 55°C, the flue gases cool down to a temperature lower than the dew point, thus causing the condensation of the water vapour contained in the flue gases in the back side of the heat exchanger. The heat released during this condensation process (the latent heat or condensing heat) is also transferred to the heating water. The cooled combustion gases are evacuated via the combustion gas outlet flue. The condensation water is evacuated via a siphon.
3.1.3.Heating and domestic hot water production
An integrated plate exchanger handles domestic hot water production. A 3-way valve determines whether the heated water is fed into the heating system or the plate exchanger. A DHW sensor signals domestic hot water demands. This signal is transmitted to the control panel, which then switches the 3-way valve to the hot water position and trips the heating pump. The 3-way valve is spring-loaded but only consumes electricity when it switches to another position.
The heating water reheats the domestic water in the plate exchanger. This water is pumped into the boiler tank to provide a constant plentiful supply of domestic hot water. In comfort mode, if no domestic hot water is drawn off, the boiler reheats the plate exchanger and the boiler tank at regular intervals. Any limescale particles are kept out of the plate exchanger by a self-cleaning water filter (selfcleans once every 76 hours).
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MCA 25/28 BIC |
3. Description |
3.2Main parts
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T001961-D |
1Flue gas discharge pipe
2Casing/air box
3Flue gas measuring point
4Mixer pipe
5Heating flow hose
6Air intake silencer
7Box for the control PCBs
8Combined venturi and gas valve unit
9Flow end hydrobloc
10Safety valve outlet pipe
11Siphon
12Control panel
13Tank drainage valve
14Expansion vessel (DHW circuit)
15Tank hydrobloc
16Shunt pump (DHW circuit)
17Shunt pump (Heating circuit)
18Return end hydrobloc
19Plate heat exchanger (DHW circuit)
203-way valve
21Condensate receiver tank
22Fan
23Heat exchanger (Heating circuit)
24Calorifier tank
25Ignition/ionization electrode
26Expansion vessel (Heating circuit)
27Air intake
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3. Description |
MCA 25/28 BIC |
3.3Control panel
3.3.1.Description of the keys
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A000866-A |
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A |
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B |
BAR |
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pb AUTOxc g m rjM |
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' STD |
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E |
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F |
ATemperature setting key (heating, DHW, swimming pool)
B |
Operating mode selection key |
CDHW override key
DKey to access the parameters reserved for the installer
EKeys on which the function varies as and when selections are made
FRotary setting button:
4 Turn the rotary button to scroll through the menus or modify a value
4 Press the rotary button to access the menu selected or confirm a value modification
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3. Description |
3.3.2.Description of the display
n Key functions
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BAR |
r |
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? |
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pb AUTOxc g m rjL |
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f |
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- |
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' STD |
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C002696 |
STD |
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b |
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ESC |
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t |
Access to the various menus
Used to scroll through the menus
Used to scroll through the parameters
The symbol is displayed when help is available
Used to display the curve of the parameter selected
Reset of the time programmes
Selection of comfort mode or selection of the days to be programmed
Selection of reduced mode or deselection of the days to be programmed
Back to the previous level
Back to the previous level without saving the modifications made
Manual reset
n Flame output level
0 |
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C002705-A |
BAR |
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pb AUTOxc g m |
rjM |
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C002701-B |
C002704 |
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STD |
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C002703-A |
The whole symbol flashes: The burner starts up but the flame is not yet present
Part of the symbol flashes: Output is increasing
Steady symbol: The required output has been reached
Part of the symbol flashes: Output is dropping
C002702-A
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3. Description |
MCA 25/28 BIC |
n Operating modes
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p |
0 |
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b |
BAR |
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pb AUTOxc g m rjM |
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STD |
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C002697- |
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AUTO |
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x |
BAR |
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pb AUTOxc g m rjM |
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STD |
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C002698- |
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g |
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m |
Summer mode: The heating is off. Domestic hot water continues to be produced
WINTER mode: Heating and domestic hot water working
Operation in automatic mode according to the timer programme
Comfort mode: The symbol is displayed when a DAY override (comfort) is activated
4Flashing symbol: Temporary override
4Steady symbol: Permanent override
Reduced mode: The symbol is displayed when a NIGHT override (reduced) is activated
4Flashing symbol: Temporary override
4Steady symbol: Permanent override
Holiday mode: The symbol is displayed when a HOLIDAY override (antifreeze) is activated
4Flashing symbol: Holiday mode programmed
4Steady symbol: Holiday mode active
Manual mode
n System pressure
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bar |
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BAR |
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pb AUTOxc g m |
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STD |
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C002708- |
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Pressure indicator: The symbol is displayed when a water pressure sensor is connected.
4Flashing symbol: The quantity of water is insufficient.
4Steady symbol: The quantity of water is sufficient.
Water pressure level
4R : 0,9 to 1,1 bar
4E : 1,2 to 1,5 bar
4Z : 1,6 to 1,9 bar
4A : 2,0 to 2,3 bar
4l : > 2,4 bar
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