DeDietrich MCR 24 Bedienungsanleitung
MCR 24, 24/28MI, 30/35MI, 34/39MI
Wall-hung gas condensation boilers
Instructions for
use
English
08/06/06
Contents
MCR 24, 24/28MI, 30/35MI, 34/39MI 08/06/06 - 300008487-001-A
Symbols used. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Recommendations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Control panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
1 Parameter display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
2 Setting different parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
3 Setting the manual mode . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
4 Modifying the water outlet temperature in the heating installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
5 Switching off the central heating (In summer mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
6 Setting the domestic water temperature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
7 Modifying the comfort setting (ECO) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Maintenance and periodic checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
3
08/06/06 - 300008487-001-A MCR 24, 24/28MI, 30/35MI, 34/39MI
Congratulations on choosing a DE DIETRICH product, a product of quality. We strongly recommend that you read the following instructions in
order to guarantee the optimal operation of your appliance. We are sure that you will not be disappointed and that it will satisfy all of your
expectations.
Symbols used
Caution danger
Risk of injury and damage to equipment. Attention must be
paid to the warnings on safety of persons and equipment
Important information
Information must be kept in mind to maintain comfort
ZReference
Refer to another manual or other pages in this instruction
manual
4MCR 24, 24/28MI, 30/35MI, 34/39MI 08/06/06 - 300008487-001-A
Recommendations
If you smell gas:
- Do not use a bare flame, do not smoke, do not actuate
electrical contacts or switches ( doorbell, light, motor, lift,
etc..),
- Cut the gas supply,
- Open the windows,
- Extinguish all flames,
- Evacuate the premises,
- Consult your fitter or the maintenance company,
- Inform the gas supplier.
In the event of flue gas emanation:
- Switch the boiler off,
- Open the windows,
- Evacuate the premises,
- Consult your fitter or the maintenance company.
Advised positions: Boiler
- It is forbidden to store inflammable products and
materials in the boiler room or close to the boiler, even
temporarily,
- MCR boilers must be installed in a frost-free environment,
- The boiler's ignition device must always be accessible.
Temperature:
- The tap water temperature is factory set at 55°C; this
temperature can be set to 65°C
- The maximum temperature that the water can reach in the
boiler is 95°C. The temperature in the radiators can reach
the maximum value programmed for the boiler,
- When the boiler is operating, the discharge conduit may
reach a higher temperature.
Maintenance: We recommend doing this at least once a year
Maintenance and cleaning of the heater must be carried out at
least once a year by a qualified technician.
Installation, commissioning, maintenance and repairs must be
carried out by authorised specialists (approved heating
engineers / installers).
For a proper operating of the boiler, follow carefully the
instructions.
Aeration
France: the cross section of the aeration vent, which is compulsory
in the premises in which the boiler is installed, must comply with the
DTU 61.1 (P 45 204) standard and, in particular, with the instruction
on general improvement work (Book 1764 April 1982).
Belgium:the cross-section of the aeration vents, which are
compulsory in the room in which the boiler is installed, must comply
with the NBN B 61-002,NBN D 51-003,NBN D 51-006 standard.
The air inlet into the premises must in no event be
obstructed, even partially.
Maintenance
The boiler must be serviced and fully cleaned and the flue gas
conduit swept by a qualified professional at least 1 times per year.
We recommend that you take out a maintenance contract.
Precautions against frost
MCR boilers must be installed in a frost-free environment.
If the temperature of the central heating water in the boiler falls too
much, the integrated protection device switches itself on:
- If the water temperature is lower than 7°C, the circulating pump is
activated,
- If the water temperature is lower than 3°C, the boiler is activated,
- Whenthewatertemperatureis above 10 °C,theboilerisswitched
off and the circulation pump runs for another 15 minutes.
If a room thermostat, connected via connectors 7 and 8, is
activated, the boiler will operate permanently until it
reaches the outlet setting point.
This function is a protection device for the boiler only, not
for the system or buiding fabric.
5
08/06/06 - 300008487-001-A MCR 24, 24/28MI, 30/35MI, 34/39MI
Control panel
The control panel of the MCR boiler has 6 function keys, an on/off
switch and a screen.
The display includes 4 positions and several symbols which indicate
the operating status of the control panel and any disturbances.
Figures, points and/or letters may be displayed.
The symbols located above the function keys indicate their current
function.
When a key has not been touched for 3 minutes, the display lighting
goes out and only the symbols , 2and are displayed.
Pressing on any key will display the current status of the boiler and
the current command code. If there is a malfunction, the
corresponding code continues to be displayed.
A Menu key
BDisplay
C Main ON/OFF switch
D Pressure gauge
E Sweep key
F "Escape" or "Reset" key
G Heating temperature adjustment key or -
H DHW temperature adjustment key or +
J Maintenance key or enter
6MCR 24, 24/28MI, 30/35MI, 34/39MI 08/06/06 - 300008487-001-A
1 Parameter display
The following parameters can be displayed in the information menu
:
-t1 = Flow temperature (°C)
-t2 = Return temperature (°C)
-t3 = Tank sensor (°C)
-t4 = Outside temperature (°C)
-FL = Ionisation current (µA)
-nF = Fan speed (rpm)
- Press the Äkey. The symbol flashes. To access the
parameters, press key l.
- Press the +key successively to scroll down the various
parameters.
7
08/06/06 - 300008487-001-A MCR 24, 24/28MI, 30/35MI, 34/39MI
2 Setting different parameters
Parameters P1 to P6 can be modified by the user in order to meet
central heating and DHW comfort needs.
- PresskeyÄseveraltimesuntilthesymbolflashesonthemenu
bar.
- Press the lkey. The symbol P:1 appears. The symbol 1
flashes.
- Press the lkey a second time. The symbol 75 appears (75 °C:
Factory setting).
- Press the -or +key to modify the value.
- To confirm, press the lkey. The symbol P1 appears (The
symbol 1flashes).
- Press key 2 time to return to the current operating mode.
8MCR 24, 24/28MI, 30/35MI, 34/39MI 08/06/06 - 300008487-001-A
3 Setting the manual mode
- Press key Äseveral times until the symbol flashes on the
menu bar.
- Pressthelkey.The minimum outlettemperatureP1 orthetext
Auto is displayed if an outside temperature sensor is installed.
- Press the +key to increase the outlet temperture manually.
- To confirm, press the lkey.
The installation is in manual mode.
- Press key 1 time to deactivate the manual mode.
- Press key 1 time to return to the current operating mode.
Parameter Description Comments Factory setting
24 24/28MI 30/35MI 34/39MI
P1 Flow temperature Tset 20 to 85 °C 75 °C
P2 DHW Tset 40 to 65 °C 55 °C
P3 Boiler regulation
0 = Heating programme deactivated, DHW programme
deactivated
2111
1 = Heating programme activated, DHW programme
active
2 = Heating programme activated, DHW programme
deactivated
3 = Heating programme deactivated, DHW programme
active
P4 Energy-saving mode 0 = Comfort 21 = Energy-saving mode
2 = Regulation operated by the controller
P5 Anticipation resistance 0 = No anticipation resistance for the ON/OFF thermostat 0
1 = Anticipation resistance for the ON/OFF thermostat
P6 The screen goes off
automatically
0 = The screen stays off 21 = The screen stays on
2 = The screen goes off automatically (After 3 minutes)
9
08/06/06 - 300008487-001-A MCR 24, 24/28MI, 30/35MI, 34/39MI
4 Modifying the water outlet temperature in the heating
installation
- Starting from the current operating status, press key .
- The symbol and the current temperature are displayed.
- Press the +or -key to modify the value.
- To confirm, press the lkey.
5 Switching off the central heating (In summer mode)
- Starting from the current operating status, press key .
- The symbol and the current temperature are displayed.
- Press the -key until the OFF symbol is displayed.
- Press the lkey to modify the setting.
- The symbol appears.
production of domestic hot water: activated.
10 MCR 24, 24/28MI, 30/35MI, 34/39MI 08/06/06 - 300008487-001-A
6 Setting the domestic water temperature
- Starting from the current operating status, press key .
- The symbol and the current temperature are displayed.
- Set the temperature using keys +and -.
- Press the -key until the OFF symbol is displayed.
- Press the lkey to modify the setting.
- The symbol appears.
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