DE DIETRICH MCR 24 User Manual
Vivadens
Wall-hung gas condensing boilers
MCR 24
MCR 24/28 MI
MCR 30/35 MI
MCR 34/39 MI
EN
User Guide
300015874-001-01
Contents
1 Introduction ................................................................................................4
1.1 Symbols used .......................................................4
1.2 Abbreviations ........................................................4
1.3 General ..................................................................4
1.3.1 Manufacturer’s liability .............................................4
1.3.2 Installer’s liability .....................................................5
1.3.3 User’s liability ..........................................................5
1.4 Homologations ......................................................6
1.4.1 Certifications ...........................................................6
2 Safety instructions and recommendations ..............................................7
2.1 Safety instructions ...............................................7
2.2 Recommendations ................................................8
3 Description ..................................................................................................9
3.1 General description ..............................................9
3.2 Main parts ..............................................................9
3.3 Control panel .......................................................10
4 Operating the appliance ..........................................................................11
4.1 Start the boiler ....................................................11
4.2 Reading out measured values ...........................12
4.3 Changing the settings ........................................13
4.3.1 Changing the heating temperature ........................13
4.3.2 Changing the domestic hot water
temperature ...........................................................14
4.3.3 Modifying the comfort setting (ECO) .....................14
4.3.4 Stopping the central heating or activating the Summer
mode .....................................................................15
4.3.5 Stopping domestic hot water production ...............16
4.3.6 Other settings ........................................................16
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Contents
4.4 Installation shutdown .........................................17
4.5 Turning on the antifreeze function ....................18
5 Checking and maintenance .....................................................................19
5.1 General instructions ...........................................19
5.2 Periodic checks ..................................................19
5.3 Filling the system ...............................................20
5.4 Bleeding the heating system .............................21
5.5 Draining the installation .....................................24
6 Troubleshooting .......................................................................................25
6.1 Error codes ..........................................................25
6.1.1 ..............................................................................25
6.1.2 ..............................................................................25
6.1.3 Other error codes ..................................................25
6.1.4 Before contacting the installer ...............................25
6.2 Incidents and solutions ......................................26
7 Technical specifications ..........................................................................28
7.1 Technical specifications ....................................28
8 Energy savings .........................................................................................30
8.1 Energy savings ...................................................30
8.1.1 Energy-saving advice ............................................30
8.1.2 Room thermostat and settings ..............................30
9 Warranty ....................................................................................................32
9.1 General ................................................................32
9.2 Warranty terms ...................................................32
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MCR 24 MCR 24/28 MI MCR 30/35 MI MCR 34/39 MI
1 Introduction
1.1 Symbols used
1. Introduction
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.
1.2 Abbreviations
1.3 General
CAUTION
Risk of material damage.
Signals important information.
¼Signals a referral to other instructions or other pages in the
instructions.
4 DHW: Domestic hot water.
4 IRC: Interactive remote control.
4 CRC: Communicating remote controller.
4 Hi: Lower heating value LHV (Nett).
4 Hs: Higher heating value HHV (Gross).
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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.
4
1. Introduction
MCR 24 MCR 24/28 MI MCR 30/35 MI MCR 34/39 MI
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:
4 Failure to abide by the instructions on using the appliance.
4 Faulty or insufficient maintenance of the appliance.
4 Failure 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:
4 Read and follow the instructions given in the manuals provided
with the appliance.
4 Carry out installation in compliance with the prevailing legislation
and standards.
4 Perform the initial start up and carry out any checks necessary.
4 Explain the installation to the user.
4 If a maintenance is necessary, warn the user of the obligation to
check the appliance and maintain it in good working order.
4 Give 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:
4 Read and follow the instructions given in the manuals provided
with the appliance.
4 Call on qualified professionals to carry out installation and initial
start up.
4 Get your installer to explain your installation to you.
4 Have the required checks and services done.
4 Keep the instruction manuals in good condition close to the
appliance.
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.
To prevent hazardous situations from arising, if the mains lead is
damaged it must be replaced by the original manufacturer, the
manufacturer’s dealer or another suitably skilled person.
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MCR 24 MCR 24/28 MI MCR 30/35 MI MCR 34/39 MI 1. Introduction
1.4 Homologations
1.4.1. Certifications
CE identification no
NOx < 70 mg/kWh
Type of connection Chimney: B
PIN 0063BQ3009
Flue gas outlet: C13,C33,C43,C53,C63,C83, C
23P
93
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2. Safety instructions and recommendations MCR 24 MCR 24/28 MI MCR 30/35 MI MCR 34/39 MI
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. 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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MCR 24 MCR 24/28 MI MCR 30/35 MI MCR 34/39 MI 2. Safety instructions and recommendations
2.2 Recommendations
WARNING
Only qualified professionals are authorised to work on the
appliance and the installation.
4 Regularly check the water pressure in the installation (minimum
pressure 0,8 bar, recommended pressure between 1,5 and 2,0
bar).
4 Keep the appliance accessible at all times.
4 Never 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.
4 The appliance should be on Summer or Antrifreeze mode rather
than switched off to guarantee the following functions:
- Anti blocking of pumps
- Antifreeze protection
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12
14
15
13
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T004250-A
3. Description MCR 24 MCR 24/28 MI MCR 30/35 MI MCR 34/39 MI
3 Description
3.1 General description
Wall-hung gas condensing boilers
4 MCR 24 - Heating only.
4 MCR ../.. MI - Heating and instantaneous domestic hot water
production.
4 Low pollutant emissions.
4 Flue gas discharge via a forced flue, chimney, bi-flow or 3CE type
connection.
The MCR 24 boiler can be connected to a 80 or 130 litre tank to
produce domestic hot water.
3.2 Main parts
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Automatic air vent
Flue gas discharge pipe / Combustive air
Outlet for measuring combustion gases
Heat exchanger
Air/gaz canal
Fan air inlet
Gas block
Display
Control panel
Pressure gauge
Circulating pump
Ignition transformer
Expansion vessel heating circuit
(Except MCR 34/39 MI model )
Ignition/ionization electrode
15
16
9
Stand-off frame (optional), Mounting frame, delivered with
the boiler
Water pressure sensor
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MCR 24 MCR 24/28 MI MCR 30/35 MI MCR 34/39 MI 3. Description
3.3 Control panel
A
B
C
D
E
F
G
H
J
The display indicates the state of the boiler and any errors. The
symbols located above the function keys indicate their current
function.
Pressing on any key will display the current status of the boiler and
the current command code. If there is a fault, the corresponding code
continues to be displayed.
Menu key
Display
Main ON/OFF switch
Pressure gauge
Sweep key
( or RESET key
Heating temperature key or -
DHW temperature key or +
SERVICE or U key
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