DE DIETRICH MCR-P 24 User Manual

Download

Vivadens

Wall-hung gas condensing boilers

MCR-P 24 MCR-P 24/28 MI MCR-P 30/35 MI MCR-P 34/39 MI

User Guide

127684-01

Contents

1 Introduction ................................................................................................4

1.1 Symbols used .......................................................4

1.2 Abbreviations ........................................................4

1.3 General ..................................................................5

1.3.1 Manufacturer’s liability .............................................5

1.3.2 Installer’s liability .....................................................5

1.4 Homologations ......................................................5

1.4.1 Certifications ...........................................................5

1.4.2 Gas categories ........................................................6

1.4.3 Additional Directives ................................................6

1.4.4 Factory test .............................................................6

2 Safety instructions and recommendations ..............................................7

2.1 Safety instructions ...............................................7

2.2 Recommendations ................................................7

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

070513 - 127684-01

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 .....................................23

6 Troubleshooting .......................................................................................25

6.1 Error codes ..........................................................25

6.1.1 e01 - e02 - e07 - e09 ......................25

6.1.2 e04 ...................................................................25

6.1.3 Other error codes ..................................................25

6.1.4 Before contacting the installer ...............................26

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

070513 - 127684-01

MCR-P 24 MCR-P 24/28 MI MCR-P 30/35 MI MCR-P 34/39 MI

1 Introduction

1.1 Symbols 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.

1. Introduction

DANGER

Risk of a dangerous situation causing serious physical injury.

WARNING

Risk of a dangerous situation causing slight physical injury.

1.2 Abbreviations

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 PPS: Polypropylene hardly inflammable.

4 3CE: Collective conduit for sealed boiler.

4 IRC: Interactive remote control.

4 CRC: Communicating remote controller.

4 Hi: Lower heating value LHV (Nett).

4 Hs: Higher heating value HHV (Gross).

070513 - 127684-01

1. Introduction MCR-P 24 MCR-P 24/28 MI MCR-P 30/35 MI MCR-P 34/39 MI

1.3 General

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:

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.

1.4 Homologations

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.

1.4.1. 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

070513 - 127684-01

MCR-P 24 MCR-P 24/28 MI MCR-P 30/35 MI MCR-P 34/39 MI

1.4.2. Gas categories

Gas category Gas type Connection pressure (mbar) Countries

2H3P

Natural gas H (G20) 20 All countries except China

Propane (G31) 50 Bulgaria, Romania

37/50 Czech Republic, Spain

30 Finland, Norway, Slovenia

30/37 Greece, Italy

37 Portugal

30/50 Russia

Natural gas H (G20) 20 China

The boiler is preset in the factory to operate on natural gas H (G20).

1.4.3. Additional Directives

Apart from the legal provisions and Directives, the additional Directives described in these instructions must also be observed.

1. Introduction

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:

4 Electrical safety

4 Adjustment (CO2)

4 Domestic hot water mode (Only on models with domestic hot water

production)

4 Water tightness

4 Gas tightness

4 Parameter settings

070513 - 127684-01

2. Safety instructions and recommendations

MCR-P 24 MCR-P 24/28 MI MCR-P 30/35 MI MCR-P 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. Trace possible leaks and seal them immediately.

5. If the gas leak is before the gas meter, contact the gas supplier.

2.2 Recommendations

DANGER

If you smell flue gases:

1. Switch the appliance off.

2. Open the windows.

3. Trace possible leaks and seal them immediately.

WARNING

4 Installation and maintenance of the boiler must be

carried out by a qualified professional in compliance with prevailing local and national regulations.

4 When working on the boiler, always disconnect the

boiler from the mains and close the main gas inlet valve.

4 After 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

070513 - 127684-01

MCR-P 24 MCR-P 24/28 MI MCR-P 30/35 MI MCR-P 34/39 MI 2. Safety instructions and recommendations

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 appliance. 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.

070513 - 127684-01

R000232-A

3. Description MCR-P 24 MCR-P 24/28 MI MCR-P 30/35 MI MCR-P 34/39 MI

3 Description

3.1 General description

Wall-hung gas condensing boilers

4 MCR-P 24 - Heating only.

4 MCR-P ... 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-P 24 boiler can be connected to a 80 or 130 litre tank to produce domestic hot water.

3.2 Main parts

Automatic air vent

Flue gas discharge pipe / Combustive air

Outlet for measuring combustion gases

Heat exchanger

Air/gaz canal

Fan air inlet

Water pressure sensor

Gas block

Display

Control panel

Pressure gauge

Circulating pump

Ignition transformer

Expansion vessel heating circuit (Except MCR-P 34/39 MI model )

Ignition/ionization electrode

Stand-off frame (optional)

070513 - 127684-01

MCR-P 24 MCR-P 24/28 MI MCR-P 30/35 MI MCR-P 34/39 MI 3. Description

3.3 Control panel

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

070513 - 127684-01

A000785-A

A000787-A

4. Operating the appliance MCR-P 24 MCR-P 24/28 MI MCR-P 30/35 MI MCR-P 34/39 MI

4 Operating the appliance

4.1 Start the boiler

1. Check the water pressure in the installation.

2. Open the gas valve.

3. Throw the boiler’s ON / OFF switch.

4. The start-up cycle begins. It lasts 2 minutes and cannot be interrupted. During the start-up cycle, the display shows the following information:

fK[xx pK[xx

The version numbers are displayed alternately.

5. When the start-up cycle is finished, the display shows 0. The

boiler is now operational.

: Software version

: Parameter version

070513 - 127684-01

T000138-A

MCR-P 24 MCR-P 24/28 MI MCR-P 30/35 MI MCR-P 34/39 MI 4. Operating the appliance

4.2 Reading out measured values

The following values can be displayed in the information menu Q:

4 t1 = Flow temperature (°C) 4 t2 = Return temperature (°C) 4 t3 = Domestic hot water temperature (°C) 4 t4 = Outside temperature (°C)

fl = Ionization current (μA)

4 4 Mf = Fan speed (rpm)

1. Press the f key. The symbol Q flashes.

2. To access the parameters, press key S.

3. Press the [+] key successively to scroll down the various parameters.

4. Press the

key 2 times to return to the current operating mode

070513 - 127684-01

T000147-A

GA,

HF,

4. Operating the appliance MCR-P 24 MCR-P 24/28 MI MCR-P 30/35 MI MCR-P 34/39 MI

4.3 Changing the settings

4.3.1. Changing the heating temperature

If an outside temperature sensor or an OpenTherm control system is fitted, the heating flow temperature is adjusted automatically.

In summer, it is possible to reduce the heating flow temperature whilst maintaining comfort. To do this, proceed as follows:

1. Press the D key. The symbol D and the current temperature are displayed.

2. Use the [+] and [-] keys to change the parameter value.

3. To confirm the new value, press the key S.

It also possible to modify this setting using the parameter

p1. ¼

See chapter: "Other settings", page 16.

070513 - 127684-01

T000143-A

Ajj

T000148-B

MCR-P 24 MCR-P 24/28 MI MCR-P 30/35 MI MCR-P 34/39 MI 4. Operating the appliance

4.3.2. Changing the domestic hot water

temperature

1. Press the N key. The symbol N and the current temperature are displayed.

2. Use the [+] and [-] keys to change the parameter value.

3. To confirm the new value, press the key S.

It also possible to modify this setting using the parameter

p2. ¼

See chapter: "Other settings", page 16.

4.3.3. Modifying the comfort setting (ECO)

The user can consult or modify the following 3 settings:

4 ON = Activation of the energy-saving setting.

4 OFF = Activation of the comfort setting.

4 AUTO = Setting dependent on the control unit (Factory setting).

1. Press the f key 1 times. The symbol Q flashes.

2. Press the f key a second time. The symbol ECO flashes.

3. To confirm, press the S key.

4. The current operating status is shown on the display:AUTO.

5. Use the + and - keys to change the parameter value.

6. To confirm, press the S key.

7. Press the mode.

It also possible to modify this setting using the parameter p4. ¼See chapter: "Other settings", page 16.

key 2 times to return to the current operating

070513 - 127684-01

HF,

Ajj

T000141-A

4. Operating the appliance MCR-P 24 MCR-P 24/28 MI MCR-P 30/35 MI MCR-P 34/39 MI

4.3.4. Stopping the central heating or activating

the Summer mode

1. Press the D key. The symbol D and the current temperature are displayed.

2. Press the key [-] several times until the value

3. To confirm the new value, press the key S. The symbol C appears.

4 It also possible to modify this setting using the

parameter p3. ¼See chapter: Unresolved Cha

internal-destination[ 1834] .

4 Domestic hot water production is maintained.

0ff

is displayed.

070513 - 127684-01

GA,

Ajj

T000142-A

MCR-P 24 MCR-P 24/28 MI MCR-P 30/35 MI MCR-P 34/39 MI 4. Operating the appliance

4.3.5. Stopping domestic hot water production

1. Press the N key. The symbol N and the current temperature are displayed.

2. Press the key [-] several times until the value

3. To confirm the new value, press the key S. The symbol T appears.

It also possible to modify this setting using the parameter p3. ¼See chapter: Unresolved Cha internal-

destination[ 1834] .

0ff

is displayed.

Parameter

070513 - 127684-01

Description Adjustment range

Flow temperature 20 to 85 °C 75 °C 75 °C 75 °C 75 °C

Domestic hot water temperature

Heating / DHW mode

4.3.6. Other settings

Factory setting

MCR-P 24

40 to 65 °C 55 °C 55 °C 55 °C 55 °C 0 = Heating deactivated (C) / DHW

deactivated (T) 1 = Heating activated (D) / DHW

activated (N) 2 = Heating activated (D) / DHW

deactivated (T) 3 = Heating deactivated (C) / DHW

activated (N)

2 1 1 1

MCR-P 24/28 MI

MCR-P 30/35 MI

MCR-P 34/39 MI

T000307-A

4. Operating the appliance

Parameter Description Adjustment range

0 = Comfort mode

ECO mode

Anticipation resistance

Display screen

1 = Energy-saving mode

2 = Management using a programmable thermostat

0 = No anticipation resistance for the ON/OFF thermostat

1 = Anticipation resistance for the ON/ OFF thermostat

0 = The screen stays off

1 = The screen stays on

2 = The screen switches off automatically after 3 minutes

MCR-P 24 MCR-P 24/28 MI MCR-P 30/35 MI MCR-P 34/39 MI

Factory setting

MCR-P 24

2 2 2 2

0 0 0 0

2 2 2 2

MCR-P 24/28 MI

MCR-P 30/35 MI

MCR-P 34/39 MI

To change these parameters, proceed as follows:

1. Press key f several times until the symbol W flashes on the menu bar.

2. Press the S key to enter the "User" menu. The symbol

p[1

appears.

3. Use the + and - keys to select to parameter to be changed.

4. Press the S key to display the parameter value selected.

5. Use the + and - keys to change the parameter value.

6. To confirm the new value, press the key S. The name of the modified parameter is displayed.

7. If necessary, set other parameters by selecting them using the + or - keys.

8. To exit the User menu, press the

key 2 times.

4.4 Installation shutdown

If no selections are made in the various modes for 10 minutes, the boiler resumes the settings prior to manipulation.

If the central heating system is not used for a long period, we recommend switching the boiler off.

1. Switch the boiler off.

2. Switch off the boiler electrical power supply.

3. Close the gas valve.

4. Ensure that the boiler and system are protected against frost damage.

070513 - 127684-01

MCR-P 24 MCR-P 24/28 MI MCR-P 30/35 MI MCR-P 34/39 MI 4. Operating the appliance

4.5 Turning on the antifreeze function

We recommend setting the boiler thermostat to a value off 10°C if using a classic installation.

Define parameter p4 as 1 (energy-saving mode), the heat retention function will be deactivated.

Installation and room antifreeze protection is guaranteed if you are absent.

If the temperature of the central heating water in the boiler falls too much, the integrated protection device switches itself on:

4 If the water temperature is lower than 7°C, the circulating pump is

activated.

4 If the water temperature is lower than 3°C, the boiler is activated.

4 When the water temperature is above 10 °C, the boiler is switched

off and the circulation pump runs for another 15 minutes.

CAUTION

This function is a protection device for the boiler only, not for the system or buiding fabric.

CAUTION

If a room thermostat, connected via connectors 7 and 8, is activated, the boiler will operate permanently until it reaches the flow setting point.

070513 - 127684-01

T000181-B

5. Checking and maintenance MCR-P 24 MCR-P 24/28 MI MCR-P 30/35 MI MCR-P 34/39 MI

5 Checking and maintenance

5.1 General instructions

CAUTION

4 An annual inspection is compulsory.

4 We recommend taking out a maintenance contract.

4 Maintenance operations must be done by a qualified

engineer.

4 Only original spare parts must be used.

4 Make certain that the flues and chimneys are

connected, in good condition and not blocked.

4 Do not modify nor block the condensate outlet(s).

4 If a neutralisation system is installed, follow the

instructions delivered with the neutralisation system for cleaning and servicing of this system.

5.2 Periodic checks

4 Check the water pressure in the installation. If the water pressure

is too low, add more water to the installation. ¼See chapter: "Filling the system", page 20.

4 Carry out a visual check for the presence of any water leaks.

4 Open and close the radiator valves several times a year (this

prevents the valves from seizing up).

070513 - 127684-01

T000181-B

T000182-A

T000155-A

MCR-P 24 MCR-P 24/28 MI MCR-P 30/35 MI MCR-P 34/39 MI

4 Clean the outside of the boiler using a damp cloth and a light

detergent.

5. Checking and maintenance

CAUTION

Only a qualified professional is authorised to clean the inside of the boiler.

5.3 Filling the system

The water pressure in the boiler must be between 1,5 and 2 bar. Add water to the installation if necessary. To do this, proceed as follows:

1. Open the valves on all radiators connected to the heating system.

2. Set the room thermostat to as low a temperature as possible.

070513 - 127684-01

3. Switch off the boiler electrical power supply.

T000185-A

T000847-A

T000181-B

T000183-A

T000184-A

5. Checking and maintenance

MCR-P 24 MCR-P 24/28 MI MCR-P 30/35 MI MCR-P 34/39 MI

4. Wait until the temperature drops below 40°C and the radiators seem cold before filling the central heating system.

5. Open the valve.

6. Close the valve.

7. After filling the installation, switch the boiler on.

8. Set the room thermostat or the regulator.

9. Set the radiator valves.

CAUTION

Filling and bleeding the installation 2 times a year should be sufficient to obtain an adequate hydraulic pressure. If it is often necessary to top up the installation with water, contact your fitter.

5.4 Bleeding the heating system

It is essential that you bleed any air in the calorifier, the conduits or the taps to prevent the annoying noises likely to be produced during heating or when tapping water. To do this, proceed as follows:

1. Open the valves on all radiators connected to the heating system.

2. Set the room thermostat as high as possible.

3. Wait until the radiators are hot.

070513 - 127684-01

T000155-A

T000185-A

T000216-A

T000217-A

MCR-P 24 MCR-P 24/28 MI MCR-P 30/35 MI MCR-P 34/39 MI 5. Checking and maintenance

4. Switch the boiler off.

5. Wait around 10 minutes until the radiators are cold.

6. Bleed the radiators. Start with the lower floors.

7. Open the bleed connection using the bleed key provided whilst keeping a rag pressed against the connection.

070513 - 127684-01

T000218-A

T000228-A

1,5 ... 2 bar

T000183-A

T000181-B

5. Checking and maintenance

MCR-P 24 MCR-P 24/28 MI MCR-P 30/35 MI MCR-P 34/39 MI

8. Wait until water comes out of the bleed valve and then close the bleed connection.

CAUTION

The water may still be hot.

9. After venting, check whether the pressure in the installation is still sufficient. Add water to the installation if necessary.

10.Switch on the boiler. A vent cycle of a duration of around 3 minutes is carried out automatically.

5.5 Draining the installation

11.Set the room thermostat or the regulator.

It may become necessary to empty the water from the heating system when the radiators have to be replaced, should there be a major water leak or a risk of frost. To do this, proceed as follows:

1. Open the valves on all radiators connected to the heating system.

2. Switch off the boiler electrical power supply.

070513 - 127684-01

T000185-A

T000858-A

MCR-P 24 MCR-P 24/28 MI MCR-P 30/35 MI MCR-P 34/39 MI 5. Checking and maintenance

3. Wait around 10 minutes until the radiators are cold.

4. Connect an evacuation hose to the plug located at the lowest level. Place the end of the hose in a discharge sump or in a place where the water discharged from the valve can not do any damage.

5. Open the filling/draw-off valve on the heating system. Vent the heating installation.

WARNING

The water may still be hot.

6. When no more water comes out of the drainage plug, close the drainage valve.

070513 - 127684-01

6. Troubleshooting

6 Troubleshooting

6.1 Error codes

6.1.1. e01 - e02 - e07 - e09

If one of the breakdown codes opposite is dispayed, check the hydraulic pressure:

Case 1: Pressure higher than or equal to 1 bar

4 Press the RESET key to reset the appliance. Wait a few seconds.

MCR-P 24 MCR-P 24/28 MI MCR-P 30/35 MI MCR-P 34/39 MI

- If the display shows 0, the boiler is again operating normally.

- If the display again shows e1, e2 or e7, contact the

installer.

Case 2: Pressure lower than 1 bar

4 Top up the installation with water. ¼See chapter: "Filling the

system", page 20.

4 Press the RESET key to reset the appliance. Wait a few seconds.

- If the display shows 0, the boiler is again operating normally.

- If the display again shows e1, e2, e7 or e9, contact the

installer.

6.1.2.

If the breakdown code opposite is shown:

4 Check the position of the gas valve. Open the gas valve if it is

closed.

4 Press the RESET key to reset the appliance. Wait a few seconds.

- If the display shows 0, the boiler is again operating normally.

- If the display again shows e4, contact the installer.

e04

6.1.3. Other error codes

If another error code is displayed, contact the installer.

070513 - 127684-01

C000655-B

MCR-P 24 MCR-P 24/28 MI MCR-P 30/35 MI MCR-P 34/39 MI 6. Troubleshooting

6.1.4. Before contacting the installer

Before contacting the installer

Note the following information on the appliance’s rating plate:

4 Type of gas used

4 Boiler type

4 Manufacturing date

4 Serial no. of the appliance

6.2 Incidents and solutions

Problem

There is no domestic hot water.

The radiators are cold.

Probable causes Solution

4 Check that the boiler is switched on.

The boiler is not switched on.

The DHW mode is deactivated.

4 Check the fuses and switches.

4 Check that the gas valve is fully opened.

Activate the DHW mode.

¼See chapter: "Stopping domestic hot water production", page 16.

The water pressure is too low (< 1 bar).

The energy-saving shower head is restricting the water flow.

The heating temperature setting is too low.

Top up the installation with water. ¼See chapter:

"Filling the system", page 20.

Clean the shower head; replace if necessary.

Increase the value of parameter p1 or, if a room thermostat is connected, increase the temperature.

¼See chapter: "Changing the heating temperature", page 13.

Activate the heating mode.

The heating mode is deactivated.

¼See chapter: "Stopping the central heating or activating the Summer mode", page 15.

The radiator valves are closed. Open the valves on all radiators connected to the heating

system.

4 Check that the boiler is switched on.

The boiler is not switched on.

The water pressure is too low (< 1 bar).

4 Check the fuses and switches.

4 Check that the gas valve is fully opened.

Top up the installation with water. ¼See chapter:

"Filling the system", page 20.

070513 - 127684-01

6. Troubleshooting MCR-P 24 MCR-P 24/28 MI MCR-P 30/35 MI MCR-P 34/39 MI

Problem Probable causes Solution

The heating temperature setting is too low.

Increase the value of parameter p1 or, if a room thermostat is connected, increase the temperature.

¼See chapter: "Changing the heating temperature", page 13.

4 Check that the boiler is switched on.

The boiler is not switched on.

The boiler is not working.

The water pressure is too low (< 1 bar).

An error code appears on the display.

4 Check the fuses and switches.

4 Check that the gas valve is fully opened.

Top up the installation with water. ¼See chapter:

"Filling the system", page 20.

4 Press the Reset button for 2 seconds. 4 Correct the error if possible. ¼See chapter:

"Error codes", page 25.

The gas pressure is too low. Open the gas valve.

The water pressure is too low (< 1 bar).

Significant variations in domestic hot water temperature.

Clicking in the central heating pipes

Significant water leak under or close to the boiler

Not enough water in the installation.

Water leak. Contact the fitter.

Insufficient water supply. Open the valve.

The central heating pipe connections are too tight.

There is air in the heating pipes. It is essential that you bleed any air in the calorifier, the

The water is circulating too quickly in the central heating system.

The boiler or central heating pipes are damaged.

Top up the installation with water. ¼See chapter:

"Filling the system", page 20.

Contact the fitter.

conduits or the taps to prevent the annoying noises likely to be produced during heating or when tapping water.

Contact the fitter.

Close the water supply. Contact the fitter.

070513 - 127684-01

MCR-P 24 MCR-P 24/28 MI MCR-P 30/35 MI MCR-P 34/39 MI 7. Technical specifications

7 Technical specifications

7.1 Technical specifications

Boiler type MCR-P 24 MCR-P

24/28 MI

Heating mode Nominal useful output 40/30

(min / max)

Nominal useful output 80/60 (min / max)

Nominal input power kW 24 24/28 30/35 34/39

Minimum input power kW 5.8 5.8 6.1 6.3

Domestic hot water mode Nominal useful output kW - 27.4 34.3 38.2

Nominal input power kW 24 24/28 30/35 34/39

Minimum input power kW 5.8 5.8 6.1 6.3

Gas flow rate at nominal output (15 °C 1013 mbar)

LHV efficiency 100% of nominal output and

HHV efficiency 100% of nominal output and

Maximum temperature (Safety thermostat cut-off) °C 110 110 110 110

Casing losses W 57 57 57 57

Water content litres 1.7 1.8 2 2.2

Weight empty, without mounting frame, without front cover kg 29 30.5 32 31.5

Heating circuit

Nominal water flow (ΔT = 20 K)

Manometric height (ΔT = 20 K)

Flow temperature °C 75/85 75/85 75 75

Maximum pressure bar 3 3 3 3

Expansion vessel litres 8 8 8 -

Initial pressure of the expansion vessel bar 1 1 1 1

Minimum operating pressure bar 0.8 0.8 0.8 0.8

Domestic hot water circuit

Instruction set outlet temperature °C 55 55 55 55

Specific hot water flow (ΔT = 30 K)

(1) 1 mbar = 100 Pa, 1 daPa = 1 mmWG (2) Cold water inlet temperature: 10 °C

Natural gas H (G20)

Propane (G31) Kg/h 1.9 1.9 2.7 3.0

average water temperature in the boiler of 70°C

100% of nominal output and return temperature of 30°C

30% of nominal output and return temperature of 30°C

average water temperature in the boiler of 70°C

100% of nominal output and return temperature of 30°C

30% of nominal output and return temperature of 30°C

(2)

kW 6.3 /25 6.3 /25 6.6 /31.3 6.8 /35.5

kW 5.5 / 23.6 5.5 / 23.6 5.7 / 29.5 5.9 / 33.3

m3/h

% 98.3 98.3 98.2 98

% 104.4 104.4 104.4 104.4

% 108.7 108.7 109.7 110.5

% 88.5 88.5 88.4 88.2

% 94 94 94 94

% 97.9 97.9 98.8 99.5

m3/h

(1)

mbar

litres per min.

2.4 2.4 3.5 3.9

1.03 1.03 1.29 1.47

> 250 > 250 > 200 > 200

- 14 16 19

MCR-P 30/35 MI

MCR-P 34/39 MI

070513 - 127684-01

7. Technical specifications MCR-P 24 MCR-P 24/28 MI MCR-P 30/35 MI MCR-P 34/39 MI

Boiler type MCR-P 24 MCR-P

24/28 MI

Nominal max cold water pressure

Minimum pressure for 11 l/min

(2)

bar 8 8 8 8

bar - 1.4 0.4 0.4

MCR-P 30/35 MI

MCR-P 34/39 MI

Water capacity litres - 0.5 0.5 0.5

Combustion products circuit

Connection diameter mm 80/125 80/125 80/125 80/125

Mass flue gas flow rate (min / max) Kg/h 10/37 10/47 10/59 10/66

Flue gas temperature 80/60 °C 78 78 74 71.5

(1)

50 100 100 140

1 - 7 1 - 7 1 - 7 1 - 7

Pressure available at the flue gas nozzle

Condensation water pH 50/30

Electricity characteristics

Power supply voltage (50 Hz) V 230 230 230 230

Power consumption W 115 115 150 180

Electrical power circulating pump W 90 90 125 135

Auxiliary electrical power (nominal output, ex heating

W 25 25 25 25

pump)

Electrical protection index

(1) 1 mbar = 100 Pa, 1 daPa = 1 mmWG (2) Cold water inlet temperature: 10 °C

IPX4D IPX4D IPX4D IPX4D

070513 - 127684-01

MCR-P 24 MCR-P 24/28 MI MCR-P 30/35 MI MCR-P 34/39 MI

8 Energy savings

8.1 Energy savings

This chapter contains:

4 Energy-saving advice

4 Advice on setting the room thermostat correctly

8.1.1. Energy-saving advice

4 Keep the room in which the boiler is installed well ventilated. Do

not block ventilation outlets. Install reflective panels behind the radiators to prevent heat losses.

4 Do not cover the radiators. Do not hang curtains in front of the

radiators.

4 Insulate the pipes in rooms that are not heated (cellars and lofts).

4 Close the radiators in rooms not in use.

4 Do not run hot (or cold) water pointlessly.

4 Install a water-saving shower head to save up to 40 % energy.

4 Take showers rather than baths. A bath consumes twice as much

water and energy.

8. Energy savings

8.1.2. Room thermostat and settings

The room thermostat is available in the following versions:

4 2-wire ON/OFF thermostat

4 Modulating thermostat

4 Programmable room temperature thermostat

The type of thermostat and its settings have a considerable influence on energy consumption.

A few tips:

4 A modulating thermostat, possibly in combination with

thermostatic valve radiators, saves energy and offers considerable comfort. This combination allows you to set the temperature on each flow.

4 Completely closing and opening thermostatic valve radiators

causes undesirable temperature fluctuations. Open and close thermostatic valves in small steps.

4 Lower the thermostat to around 20°C. This reduces heating costs

and energy consumption.

4 Lower the room thermostat when you air the rooms.

070513 - 127684-01

8. Energy savings MCR-P 24 MCR-P 24/28 MI MCR-P 30/35 MI MCR-P 34/39 MI

4 If you are using an ON/OFF type thermostat, reduce the water

temperature value (p1) in summer (e.g. 60 in summer and 80 in winter).

4 When setting an hourly programmable thermostat, keep in mind

the days you are absent or on vacation.

070513 - 127684-01

MCR-P 24 MCR-P 24/28 MI MCR-P 30/35 MI MCR-P 34/39 MI

9 Warranty

9.1 General

You have just purchased one of our appliances and we thank you for the trust you have placed in our products.

Please note that your appliance will provide good service for a longer period of time if it is regularly checked and maintained.

Your fitter and our customer support network are at your disposal at all times.

9.2 Warranty terms

The following provisions are not exclusive of the buyer being able benefit from the legal provisions applicable regarding hidden defects in the buyer’s country.

9. Warranty

Starting from the purchase date shown on the original fitter’s invoice, your appliance has a contractual guarantee against any manufacturing defect.

The length of the guarantee is mentioned in the price catalogue. The manufacturer is not liable for any improper use of the appliance or failure to maintain or install the unit correctly (the user shall take care to ensure that the system is installed by a qualified engineer).

In particular, the manufacturer shall not be held responsible for any damage, loss or injury caused by installations which do not comply with the following:

4 applicable local laws and regulations,

4 specific requirements relating to the installation, such as national

and/or local regulations,

4 the manufacturer’s instructions, in particular those relating to the

regular maintenance of the unit,

4 the rules of the profession.

The warranty is limited to the exchange or repair of such parts as have been recognised to be faulty by our technical department and does not cover labour, travel and carriage costs.

The warranty shall not apply to the replacement or repair of parts damaged by normal wear and tear, negligence, repairs by unqualified parties, faulty or insufficient monitoring and maintenance, faulty power supply or the use of unsuitable fuel.

070513 - 127684-01

Sub-assemblies such as motors, pumps, electric valves etc. are guaranteed only if they have never been dismantled.

The legislation laid down by european directive 99/44/EEC, transposed by legislative decree No. 24 of 2 February 2002 published in O.J. No. 57 of 8 March 2002, continues to apply.

AD001-AH

DUEDI S.r.l.

DE DIETRICH SERVICE

BDR Thermea (Czech republic) s.r.o

www.duediclima.it

www.dedietrich.cz

Distributore Ufficiale Esclusivo

De Dietrich-Thermique Italia

www.dedietrich-heiztechnik.com

Freecall 0800 / 201608

Jeseniova 2770/56

130 00 Praha 3

+49 (0)25 72 / 9161-0

+49 (0)25 72 / 9161-102

info@remeha.de

Via Passatore, 12 - 12010 San Defendente di Cervasca CUNEO

+39 0171 857170 +39 0171 687875 info@duediclima.it

+420 271 001 627 info@dedietrich.cz

DE DIETRICH THERMIQUE S.A.S

DE DIETRICH THERMIQUE Iberia S.L.U.

www.dedietrich-calefaccion.es

Av. Princep d’Astúries 43-45

08012 BARCELONA

+34 932 920 520 +34 932 184 709

129164, Россия, г. Москва

Зубарев переулок, д. 15/1

Бизнес-центр «Чайка Плаза»,

офис 309

+7 (495) 221-31-51

127684- 001-01

DEDIETRICH THERMIQUE 57,ruedelaGareF-67580MERTZWILLER-BP 30

© Copyright All technical and technological information contained in these technical instructions, as well as any drawings and technical descriptions supplied, remain our property and shall not be multiplied without our prior consent in writing.

070513

DE DIETRICH MCR-P 24 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual