DeDietrich Vivadens MCR-P 28 BIC PLUS, Vivadens MCR-P 24 User Manual

Vivadens

EN

Wall-hung gas condensing boilers

MCR-P 24/28 BIC PLUS

User Guide

127686-04

Contents

1 Safety ...........................................................................................................4

1.1 General safety instructions .................................4

1.2 Recommendations ................................................5

1.3 Liabilities ...............................................................6

1.3.1 Manufacturer’s liability .............................................6

1.3.2 Installer’s liability .....................................................6

1.3.3 User’s liability ..........................................................7

2 About this manual ......................................................................................8

2.1 Symbols used .......................................................8

2.2 Abbreviations ........................................................8

3 Technical specifications ............................................................................9

3.1 Homologations ......................................................9

3.1.1 Certifications ...........................................................9

3.2 Technical specifications ......................................9

4 Description of the product ......................................................................12

4.1 General description ............................................12

5 Operation ..................................................................................................13

5.1 Control panel .......................................................13

5.2 Commissioning the boiler ..................................14

5.3 Stopping the boiler .............................................14

5.4 Turning on the antifreeze function ....................14

5.5 Changing the settings ........................................15

5.5.1 Changing the heating temperature ........................15

5.5.2 Modifying the comfort setting (ECO) .....................16

5.5.3 Stopping the central heating or activating the Summer

mode .....................................................................17

5.5.4 Changing the domestic hot water

temperature ...........................................................18

5.5.5 Stopping domestic hot water production ...............19

5.5.6 Other settings ........................................................19

1

170915 - 127686-04

5.6 Reading out measured values ...........................21

6 Checking and maintenance .....................................................................22

6.1 General instructions ...........................................22

6.2 Periodic checks ..................................................22

6.3 Filling the system ...............................................23

6.4 Bleeding the heating system .............................24

7 Troubleshooting .......................................................................................27

7.1 Error codes ..........................................................27

7.1.1 e01 - e02 - e07 - e09 ......................27

7.1.2 e04 ...................................................................27

7.1.3 Other error codes ..................................................27

7.1.4 Before contacting the installer ...............................28

7.2 Incidents and solutions ......................................29

8 Disposal ....................................................................................................30

8.1 Disposal/Recycling .............................................30

9 Energy savings .........................................................................................31

9.1 Energy savings ...................................................31

9.1.1 Energy-saving advice ............................................31

9.1.2 Room thermostat and settings ..............................31

10 Warranty ....................................................................................................33

10.1 General ................................................................33

10.2 Warranty terms ...................................................33

11 Appendix ...................................................................................................34

11.1 ErP information ...................................................34

11.1.1 Product fiche .........................................................34

11.1.2 Package fiche ........................................................35

Contents

2

170915 - 127686-04

3

170915 - 127686-04

1 Safety

1.1 General safety instructions

DANGER

This appliance can be used by children aged
from 8 years and above and persons with
reduced physical, sensory or mental capabilities
or lack of experience and knowledge if they have
been given supervision or instruction concerning
use of the appliance in a safe way and
understand the hazards involved. Children shall
not play with the appliance. Cleaning and user
maintenance shall not be made by children
without supervision.

CAUTION

Only qualified persons are authorised to
assemble, install and maintain the installation.

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.

MCR-P 24/28 BIC PLUS 1. Safety

170915 - 127686-04

4

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.

1.2 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 0.8 and 1.5 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

1. Safety

MCR-P 24/28 BIC PLUS

5

170915 - 127686-04

1.3 Liabilities

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.

1.3.2. Installer’s liability

The installer is responsible for the installation and
commissioning 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.

MCR-P 24/28 BIC PLUS

1. Safety

170915 - 127686-04

6

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 Ensure the Appliance is serviced in accordance with

the manufacturer’s instructions by a suitable qualified
person.

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.

If the mains power lead is damaged it must be replaced
by the original manufacturer, the manufacturer’s dealer or
another competent person to prevent hazardous
situations.

1. Safety MCR-P 24/28 BIC PLUS

7

170915 - 127686-04

2 About this manual

2.1 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, highlight 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.

¼Signals a referral to other instructions or other pages in the
instructions.

2.2 Abbreviations

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).

MCR-P 24/28 BIC PLUS

2. About this manual

170915 - 127686-04

8

3 Technical specifications

3.1 Homologations

3.1.1. Certifications

CE identification no

PIN 0063BQ3009

NOx < 60 mg/kWh

Type of connection Chimney: B

23

Flue gas outlet: C13,C33,C43,C53,C63,C83, C

93

3.2 Technical specifications

Boiler type

MCR-P BIC PLUS

Nominal output (Pn)
Heating System (80/60 °C)

minimum-maximum kW 5,5 - 23,8

Factory setting kW 17,8

Nominal output (Pn)
Heating System (50/30 °C)

minimum-maximum kW 6,3 - 25,0

Factory setting kW 19,4

Nominal useful output (Pn) DHW minimum-maximum kW 5,5 - 27,4

Factory setting kW 27,4

Gas flow rate at nominal output (15 °C - 1013 mbar ) (max) Natural gas G20

m3/h

2,96

Natural gas G25

m3/h

3,45

Propane (G31)

m3/h

1,15

Heating efficiency under full load (Hi) (80/60 °C) (92/42/EEG) % 99,1

Heating efficiency under full load (Hi) A/R=50/30 °C (EN15502) % 104,4

Heating efficiency under partial load (Hi) (Return temperature 60°C) % 94,3

Heating efficiency under partial load (Hi) ( 92/42/EEG)(Return temperature 30°C) % 110,2

Heating efficiency under full load (Hs) (80/60 °C) (92/42/EEG) % 89,3

Heating efficiency under full load (Hs) (50/30 °C) (EN15502) % 94,0

Heating efficiency under partial load (Hs) (Return temperature 60°C) % 84,9

Heating efficiency under partial load (Hs) ( 92/42/EEG)(Return temperature 30°C) % 99,3

Weight empty, without mounting frame, without front cover kg 67

Heating circuit

Manometric height central heating circuit (ΔT = 20 K)

mbar

(1)

240

Flow temperature °C 75

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

Stand-by losses (ΔT = 30 °C) W 86

Water operating pressure PMS max bar (MPa) 3

(1) 1 mbar = 100 Pa, 1 daPa = 1 mmWG
(2) Low temperature means for condensing boilers 30°C, for low temperature boilers 37°C and for other heaters 50°C return temperature (at
heater inlet)
(3) High temperature regime means 60°C return temperature at heater inlet and 80°C feed temperature at heater outlet

3. Technical specifications MCR-P 24/28 BIC PLUS

9

170915 - 127686-04

Boiler type MCR-P BIC PLUS

Expansion vessel litres 8

Initial pressure of the expansion vessel bar (MPa) 1

Minimum operating pressure bar (MPa) 0,8

Water content litres 1,8

Domestic hot water circuit

Instruction set outlet temperature °C 60

Nominal max cold water pressure bar (MPa) 8

Minimum pressure for 11 l/min bar (MPa) 0,5

Water capacity litres 40

Combustion products circuit

Connection diameter mm 60/100

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

Flue gas temperature 80/60 °C 95

Pressure available at the flue gas nozzle

Pa

(1)

100

Condensation water pH 50/30

1 - 7

Electricity characteristics

Power supply voltage (50 Hz) V 230

Power consumption W 153

Electrical power circulating pump W 128

Auxiliary electrical power (nominal output, ex heating pump) W 25

Electrical protection index

IPX4D

Technical parameters

Condensing boiler Yes

Low-temperature boiler

(2)

No

B1 boiler No

Cogeneration space heater No

Combination heater Yes

Rated heat output

Prated

kW 24

Useful heat output at rated heat output and high temperature regime

(3)

P4

kW 23,8

Useful heat output at 30% of rated heat output and low temperature
regime

(2)

P1

kW 7,9

Seasonal space heating energy efficiency

ƞ

s

%

94

Useful efficiency at rated heat output and high temperature regime

(3)

ƞ

4

% 89,3

Useful efficiency at 30% of rated heat output and low temperature
regime

(2)

ƞ

1

% 99,3

Auxiliary electricity consumption

Full load

elmax

kW 0,025

Partial load

elmin

kW 0,025

Standby mode

P

SB

kW 0,003

Other items

Standby heat loss

P

stby

kW 0,057

Ignition burner power consumption

P

ign

kW -

Annual energy consumption

Q

HE

kWh
GJ

73

Sound power level, indoors

L

WA

dB 47

Emissions of nitrogen oxides

NO

x

mg/kWh 59

Domestic hot water parameters

(1) 1 mbar = 100 Pa, 1 daPa = 1 mmWG
(2) Low temperature means for condensing boilers 30°C, for low temperature boilers 37°C and for other heaters 50°C return temperature (at
heater inlet)
(3) High temperature regime means 60°C return temperature at heater inlet and 80°C feed temperature at heater outlet

MCR-P 24/28 BIC PLUS 3. Technical specifications

170915 - 127686-04

10

Boiler type MCR-P BIC PLUS

Declared load profile XXL

Daily electricity consumption

Q

elec

kWh 0,231

Annual energy consumption

AEC

kWh 51

Water heating energy efficiency

ƞ

wh

% 74

Daily fuel consumption

Q

fuel

kWh 32,373

Annual fuel consumption

AFC

GJ 26

(1) 1 mbar = 100 Pa, 1 daPa = 1 mmWG
(2) Low temperature means for condensing boilers 30°C, for low temperature boilers 37°C and for other heaters 50°C return temperature (at
heater inlet)
(3) High temperature regime means 60°C return temperature at heater inlet and 80°C feed temperature at heater outlet

See the back cover for contact details.

3. Technical specifications MCR-P 24/28 BIC PLUS

11

170915 - 127686-04

4 Description of the product

4.1 General description

Wall-hung gas condensing boilers

4 Heating and domestic hot water production with integrated DHW

tank.

4 High efficiency heating.

4 Low pollutant emissions.

4 Flue gas discharge via a forced flue, chimney, bi-flow or 3CE type

connection.

MCR-P 24/28 BIC PLUS 4. Description of the product

170915 - 127686-04

12

5 Operation

5.1 Control panel

A

Menu key

B

Display

C

Main ON/OFF switch

D

Pressure gauge

E

Sweep key

F

( or RESET key

G

Heating temperature key or -

H

DHW temperature key or +

J

SERVICE or U key

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.

5. Operation

MCR-P 24/28 BIC PLUS

13

170915 - 127686-04

5.2 Commissioning 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

: Software version

pK[xx

: Parameter version

The version numbers are displayed alternately.

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

boiler is now operational.

5.3 Stopping the boiler

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

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.

5.4 Turning on the antifreeze function

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

Set the boiler to ECO mode using parameter p4, this action will
switch off the standby setting.

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

A000785-A

A000787-A

A000786-A

MCR-P 24/28 BIC PLUS

5. Operation

170915 - 127686-04

14

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.

5.5 Changing the settings

5.5.1. 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 19.

T000147-A

GA,

HF,

5. Operation MCR-P 24/28 BIC PLUS

15

170915 - 127686-04

5.5.2. 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

>

key 2 times to return to the current operating

mode.

It also possible to modify this setting using the parameter
p4.

Ajj

2x

T000148-B

MCR-P 24/28 BIC PLUS 5. Operation

170915 - 127686-04

16

5.5.3. 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

0ff

is displayed.

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: "Other settings",
page 19.

4 Domestic hot water production is maintained.

HF,

Ajj

T000141-A

5. Operation MCR-P 24/28 BIC PLUS

17

170915 - 127686-04

5.5.4. 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

.

T000143-A

MCR-P 24/28 BIC PLUS 5. Operation

170915 - 127686-04

18

5.5.5. 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

0ff

is displayed.

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: "Other settings", page 19.

5.5.6. Other settings

Parameter

Description Adjustment range Factory setting

p1

Flow temperature 20 to 85 °C 75 °C

p2

Domestic hot water temperature 40 to 65 °C 60 °C

p3

Heating / DHW mode

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

1

1 = Heating activated (D) / DHW activated (N)
2 = Heating activated (D) / DHW deactivated (T)
3 = Heating deactivated (C) / DHW activated (N)

p4

ECO mode

0 = Comfort mode

01 = Energy-saving mode

2 = Management using a programmable thermostat

p5

Anticipation resistance

0 = No anticipation resistance for the ON/OFF thermostat

0

1 = Anticipation resistance for the ON/OFF thermostat

p6

Display screen

0 = The screen stays off

2

1 = The screen stays on

2 = The screen switches off automatically after 3 minutes

GA,

Ajj

T000142-A

5. Operation MCR-P 24/28 BIC PLUS

19

170915 - 127686-04

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.

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

2x

3x

T000307-A

MCR-P 24/28 BIC PLUS 5. Operation

170915 - 127686-04

20

5.6 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 = DHW sensor temperature (°C)

This temperature is used only for internal management in DHW
mode. During DHW draw-off, this value does not correspond to
the actual DHW outlet temperature (it is always lower).

4 t4 = Outside temperature (°C)
4 fl = Ionization current (μA)
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

T000138-A

5. Operation MCR-P 24/28 BIC PLUS

21

170915 - 127686-04

6 Checking and maintenance

6.1 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.

6.2 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 23.

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).

1

2

3

4

T000181-B

MCR-P 24/28 BIC PLUS 6. Checking and maintenance

170915 - 127686-04

22

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

detergent.

CAUTION

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

6.3 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.

3. Switch off the boiler electrical power supply.

1

2

3

4

T000181-B

T000182-A

T000155-A

6. Checking and maintenance

MCR-P 24/28 BIC PLUS

23

170915 - 127686-04

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.

6.4 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.

T000185-A

T000847-A

1

2

3

4

T000181-B

T000183-A

T000184-A

MCR-P 24/28 BIC PLUS

6. Checking and maintenance

170915 - 127686-04

24

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.

T000155-A

T000185-A

T000216-A

3

1

4

5

2

T000217-A

6. Checking and maintenance MCR-P 24/28 BIC PLUS

25

170915 - 127686-04

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.

11.Set the room thermostat or the regulator.

T000218-A

T000228-A

1,5 ... 2 bar

T000183-A

MCR-P 24/28 BIC PLUS 6. Checking and maintenance

170915 - 127686-04

26

7 Troubleshooting

7.1 Error codes

7.1.1. 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.

- 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 23.

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.

7.1.2.

e04

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.

7.1.3. Other error codes

If another error code is displayed, contact the installer.

T004115-A

A000781-A

A000782-A

7. Troubleshooting

MCR-P 24/28 BIC PLUS

27

170915 - 127686-04

7.1.4. 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

AD-0000686-01

MCR-P 24/28 BIC PLUS 7. Troubleshooting

170915 - 127686-04

28

7.2 Incidents and solutions

Problem Probable causes Solution

There is no domestic hot water.

The boiler is not switched on.

4 Check that the boiler is switched on.

4 Check the fuses and switches.

4 Check that the gas valve is fully opened.

The DHW mode is deactivated. Activate the DHW mode.

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

Top up the installation with water. ¼See chapter:
"Filling the system", page 23.

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

Clean the shower head; replace if necessary.

The radiators are cold.

The heating temperature setting is
too low.

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

The heating mode is deactivated. Activate the heating mode.

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

heating system.

The boiler is not switched on.

4 Check that the boiler is switched on.

4 Check the fuses and switches.

4 Check that the gas valve is fully opened.

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

Top up the installation with water. ¼See chapter:
"Filling the system", page 23.

The boiler is not working.

The heating temperature setting is
too low.

The boiler is not switched on.

4 Check that the boiler is switched on.

4 Check the fuses and switches.

4 Check that the gas valve is fully opened.

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

Top up the installation with water. ¼See chapter:
"Filling the system", page 23.

An error code appears on the
display.

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

"Error codes", page 27.

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

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

Not enough water in the installation.

Top up the installation with water. ¼See chapter:
"Filling the system", page 23.

Water leak. Contact the fitter.

Significant variations in domestic
hot water temperature.

Insufficient water supply. Open the valve.

Clicking in the central heating
pipes

The central heating pipe connections
are too tight.

Contact the fitter.

There is air in the heating pipes. 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.

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

Contact the fitter.

Significant water leak under or
close to the boiler

The boiler or central heating pipes
are damaged.

Close the water supply. Contact the fitter.

7. Troubleshooting MCR-P 24/28 BIC PLUS

29

170915 - 127686-04

8 Disposal

8.1 Disposal/Recycling

Removal and disposal of the boiler must be carried out by
a qualified professional in compliance with prevailing local
and national regulations.

Follow the steps below to remove the boiler:

4 Switch off the boiler electrical power supply.

4 Shut off the gas supply.

4 Close the water supply.

4 Vent the heating installation.

4 Remove the siphon.

4 Remove the air and exhaust pipes.

4 Disconnect all pipes from the boiler.

4 Remove the boiler.

MCR-P 24/28 BIC PLUS 8. Disposal

170915 - 127686-04

30

9 Energy savings

9.1 Energy savings

This chapter contains:

4 Energy-saving advice

4 Advice on setting the room thermostat correctly

9.1.1. 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.

9.1.2. 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.

9. Energy savings

MCR-P 24/28 BIC PLUS

31

170915 - 127686-04

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.

MCR-P 24/28 BIC PLUS 9. Energy savings

170915 - 127686-04

32

10 Warranty

10.1 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 installer and our customer support network are at your disposal
at all times.

10.2 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.

Starting from the purchase date shown on the original installer’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.

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.

10. Warranty

MCR-P 24/28 BIC PLUS

33

170915 - 127686-04

11 Appendix

11.1 ErP information

11.1.1. Product fiche

DeDietrich - MCR - P BIC PLUS

24/28

Space heating - Temperature application

Medium

Water heating - Declared load profile

XXL

Seasonal space heating energy efficiency class

A

Water heating energy efficiency class

B

Rated heat output (Prated of Psup) kW 24

Space heating - Annual energy consumption GJ 73

Water heating - Annual energy consumption kWhGJ51

26

Seasonal space heating energy efficiency % 94

Water heating energy efficiency % 74

Sound power level LWA indoors dB

47

For specific precautions about assembling, installing and maintaining:

¼ "General safety instructions", page 4

MCR-P 24/28 BIC PLUS 11. Appendix

170915 - 127686-04

34

11.1.2. Package fiche

Package card for boilers stating the energy efficiency for central
heating for the package

AD-3000743-01

%

1

‘I’

2

%+

3

%( - ‘I’ ) x 0.1 = ±

4

%(‘III’ x + ‘IV’ x ) x 0.9 x ( /100) x = +

(1)

A* = 0.95, A = 0.91,
B = 0.86, C = 0.83,
D - G = 0.81

5

%( - ‘I’ ) x ‘II’ = +

6

%0.5 x 0.5 x = -

54

<30%

G F E D C B A A

+

A

++

A

+++

%+ (50 x ‘II’) =

7

7

%

from fi che of solar device

Solar contribution AND Supplementary heat pump

Solar contribution

The energy effi ciency of the package of products provided for in this fi che may not correspond to its actual energy effi ciency once installed
in a building, as this effi ciency is infl uenced by further factors such as heat loss in the distribution system and the dimensioning of the
products in relation to building size and characteristics.

Boiler and supplementary heat pump installed with low temperature heat emitters at 35°C ?

Seasonal space heating energy effi ciency class of package

Seasonal space heating energy effi ciency of package

OR

Seasonal space heating energy effi ciency (in %)

Supplementary heat pump

Tank rating

Collector effi ciency (in
%)

Tank volume (in m³) Collector size (in m²)

Seasonal space heating energy effi ciency (in %)

Supplementary boiler

Class I = 1%, Class II = 2%, Class III = 1.5%,
Class IV = 2%, Class V = 3%, Class VI = 4%,
Class VII = 3.5%, Class VIII = 5%

Temperature control

Seasonal space heating energy effi ciency of boiler

(1) If tank rating is above A, use 0.95

select smaller value

from fi che of heat pump

from fi che of heat pump

from fi che of boiler

from fi che of temperature control

11. Appendix MCR-P 24/28 BIC PLUS

35

170915 - 127686-04

I

The value of the seasonal space heating energy efficiency
of the preferential space heater, expressed in %.

II

The factor for weighting the heat output of preferential and
supplementary heaters of a package as set out in the
following table.

III

The value of the mathematical expression:294/(11 .
Prated), whereby (Prated) is related to the preferential
space heater.

IV

The value of the mathematical expression:115/(11 .
Prated), whereby (Prated) is related to the preferential
space heater.

Psup / (Prated + Psup)

(1)(2)

II, package without hot water storage tank II, package with hot water storage tank

0 0 0

0,1 0,3 0,37

0,2 0,55 0,70

0,3 0,75 0,85

0,4 0,85 0,94

0,5 0,95 0,98

0,6 0,98 1,00

≥ 0,7 1,00 1,00

(1) The intermediate values are calculated by linear interpolation between the two adjacent values
(2) Prated is related to the preferential space heater or combination heater

MCR-P 24/28 BIC PLUS 11. Appendix

170915 - 127686-04

36

Package card for combination heating appliances (boilers or heat
pumps) stating the energy efficiency for water heating for the package

AD-3000747-01

%

1

‘I’

2

%(1.1 x ‘I’ - 10%) x ‘II’ - - ‘I’ = +

‘III’

<28%

XXL

XL

L

M

G F E D C B A A

+

A

++

A

+++

3

%

%+ 0.4 x =

23

%- 0.2 x =

23

The energy effi ciency of the package of products provided for in this fi che may not correspond to its actual energy effi ciency once installed
in a building, as this effi ciency is infl uenced by further factors such as heat loss in the distribution system and the dimensioning of the
products in relation to building size and characteristics.

Water heating energy effi ciency class of package under average climate

Water heating energy effi ciency of package under average climate

Auxiliary electricity

Solar contribution

Water heating energy effi ciency of combination heater

from fi che of solar device

Colder:

Warmer:

Water heating energy effi ciency under colder and warmer climate conditions

Declared load profi le:

I

The value of the water heating energy efficiency of the
combination heater, expressed in %.

II

.The value of the mathematical expression (220 * Q

ref

)/

Q

nonsol

, where Q

ref

is taken from Regulation EU

811/2013, Annex VII Table 15 and Q

nonsol

from the

product fiche of the solar device for the declared load
profile M, L, XL or XXL of the combination heater.

11. Appendix MCR-P 24/28 BIC PLUS

37

170915 - 127686-04

III

The value of the mathematical expression (Q

aux

. 2,5)/

(220 . Q

ref

), expressed in %, where Q

aux

is taken from the

product fiche of the solar device and Q

ref

from Regulation

EU 811/2013, Annex VII Table 15 for the declared load
profile M, L, XL or XXL.

MCR-P 24/28 BIC PLUS 11. Appendix

170915 - 127686-04

38

11. Appendix MCR-P 24/28 BIC PLUS

39

170915 - 127686-04

MCR-P 24/28 BIC PLUS 11. Appendix

170915 - 127686-04

40

AD001NU-A,

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

[e-mail]

Via Passatore, 12 - 12010
San Defendente di Cervasca
CUNEO

[phone]
[phone]
[e-mail]

[phone]
[e-mail]

IT

DE DIETRICH THERMIQUE Iberia S.L.U.

www.dedietrich-calefaccion.es

C/Salvador Espriu, 11

08908 L’HOSPITALET de LLOBREGAT

[phone]
[e-mail]

ES

129164, Россия, г. Москва

Зубарев переулок, д. 15/1

Бизнес-центр «Чайка Плаза»,

офис 309

[phone]

CZ

DE DIETRICH THERMIQUE S.A.S

[e-mail]

© 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.

170915

127686

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