DE DIETRICH MCA 45, MCA 65, MCA 90, MCA 115 User Manual

Innovens Pro

MCA 45 - 65 - 90 - 115

EN

User Guide

300024828-001-01

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

1.3.3 User's liability ..........................................................5

1.4 Certifications .........................................................6

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

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

2.2 Recommendations ................................................8

3 Description ..................................................................................................9

3.1 Operating principle ...............................................9

3.1.1 Gas/air setting .........................................................9

3.1.2 Combustion .............................................................9

3.2 Main parts ............................................................10

3.3 DIEMATIC iSystem control panel ......................10

3.3.1 Description of the keys ..........................................10

3.3.2 Description of the display ......................................11

3.3.3 Browsing in the menus ..........................................14

3.4 IniControl control panel .....................................15

3.4.1 Description of the keys ..........................................15

3.4.2 Description of the display ......................................15

4 Operating the appliance - DIEMATIC iSystem .......................................18

4.1 Putting the appliance into operation ................18

4.2 Reading out measured values ...........................18

4.3 Changing the settings ........................................20

4.3.1 Setting the set point temperatures ........................20

4.3.2 Selecting the operating mode ...............................21

4.3.3 Forcing domestic hot water production .................22

4.3.4 Setting the contrast and lighting on the

display ...................................................................22

4.3.5 Setting the time and date ......................................23

4.3.6 Selecting a timer programme ................................23

4.3.7 Customising a timer programme ...........................24

1

28/08/12 - 300024828-001-01

Contents

4.3.8 Setting an annual clock .........................................26

4.4 Installation shutdown .........................................29

4.5 Frost protection ..................................................29

5 Operating the appliance - IniControl ......................................................30

5.1 Putting the appliance into operation ................30

5.2 Reading out measured values ...........................30

5.3 Changing the settings ........................................31

5.3.1 Parameter descriptions .........................................31

5.3.2 Modification of the user-level parameters .............32

5.3.3 Setting the manual mode ......................................33

5.3.4 Changing the heating temperature ........................33

5.3.5 Modifying the domestic hot water temperature

setting ....................................................................33

5.4 Installation shutdown .........................................34

5.5 Frost protection ..................................................34

6 Checking and maintenance .....................................................................35

6.1 General instructions ...........................................35

6.1.1 DIEMATIC iSystem control panel ..........................35

6.2 Periodic checks ..................................................35

6.3 Filling the system ...............................................36

6.4 Bleeding the heating system .............................39

6.5 Draining the installation .....................................41

7 Troubleshooting .......................................................................................42

7.1 Anti-hunting ........................................................42

7.2 Messages (Code type Bxx or Mxx) ....................42

7.3 Faults (Code type Lxx or Dxx) ...........................45

7.3.1 DIEMATIC iSystem control panel ..........................45

7.3.2 IniControl control panel .........................................45

7.3.3 List of faults ...........................................................45

2

28/08/12 - 300024828-001-01

8 Technical specifications ..........................................................................51

8.1 Technical specifications ....................................51

9 Energy savings .........................................................................................52

9.1 Energy-saving advice .........................................52

9.2 Recommendations ..............................................52

10 Warranty ....................................................................................................53

10.1 General ................................................................53

10.2 Warranty terms ...................................................53

3

28/08/12 - 300024828-001-01

MCA 45 - 65 - 90 - 115

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

CAUTION

Risk of material damage.

Signals important information.

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

4 3CE: Collective conduit for sealed boiler

4 DHW: Domestic hot water

4 Hi: Lower heating value LHV (Nett)

4 Hs: Higher heating value HHV (Gross)

4 PPS: Polypropylene hardly inflammable

4 PCU: Primary Control Unit - PCB for managing burner operation

4 PSU: Parameter Storage Unit - Parameter storage for PCBs

PCU and SU

4 SCU: Secondary Control Unit - control panel PCB

4 SU: Safety Unit - Safety PCB

4 3WV: 3-way valve

28/08/12 - 300024828-001-01

4

1. Introduction

1.3 General

MCA 45 - 65 - 90 - 115

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 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.

5

28/08/12 - 300024828-001-01

MCA 45 - 65 - 90 - 115 1. Introduction

This appliance is not intended to be used by persons (including
children) whose physcial, sensory or mental capacity is impaired or
persons with no experience or knowledge, unless they have the
benefit, through the intermediary of a person responsible for their
safety, of supervision or prior instructions regarding use of the
appliance. Care should be taken to ensure that children do not play
with the appliance.

1.4 Certifications

CE identification no

NOx classification

Type of connection

(1) IP20

PIN 0063CL3333

5 (Standards EN)

Chimney: B23

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

93

(1)

, B

23P

(1)

,

28/08/12 - 300024828-001-01

6

2. Safety instructions and recommendations MCA 45 - 65 - 90 - 115

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.

7

28/08/12 - 300024828-001-01

MCA 45 - 65 - 90 - 115 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

- Frost protection

28/08/12 - 300024828-001-01

8

3. Description MCA 45 - 65 - 90 - 115

3 Description

3.1 Operating principle

3.1.1. Gas/air setting

The casing fitted to the boiler is also used as an air box. Air is sucked
in by the fan and gas injected into the venturi by the fan intake. The
fan rotation speed is set according to the settings parameters, the
thermal energy requirement and the temperatures measured by the
temperature sensors. The gas and air are mixed in the venturi. The
gas/air ratio ensures that the quantities of gas and air are adjusted to
each other. This provides optimum combustion on the entire output
range. The gas/air mixture is fed into the burner on top of the
exchanger.

3.1.2. Combustion

The burner heats the heating water circulating in the heat
exchanger. At a return temperature lower than around 55°C, the flue
gases cool down to a temperature lower than the dew point, thus
causing the condensation of the water vapour contained in the flue
gases in the lower section of the heat exchanger. The heat released
during this condensation process (the latent heat or condensing heat)
is also transferred to the heating water. The cooled combustion gases
are evacuated via the combustion gas outlet flue. The condensation
water is evacuated via a siphon.

9

28/08/12 - 300024828-001-01

T002036-B

8

7

4

55

6

2

3

9

11

10

12

13

1

A000866-A

bar

STD

t

0 2 4 6 8 10 12 14 16 18 22 2420

p

b

AUTO

x

c

r

j

M

g

m

A

B

C

D

E

F

(

'

MCA 45 - 65 - 90 - 115 3. Description

3.2 Main parts

1

2

3

4

5

6

7

8

9

10

11

12

13

3.3 DIEMATIC iSystem control panel

Flue gas discharge pipe / Air intake

Casing/air box

Heat exchanger (Central heating)

Outlet for measuring combustion gases

Ignition/ionization electrode

Mixer pipe

Combined venturi and gas valve unit

Air intake silencer

Instrument box

Siphon

Box for the control PCBs

Fan

Water flow pipe

3.3.1. Description of the keys

A

B

C

Temperature setting key (heating, DHW, swimming pool)

Operating mode selection key

DHW override key

D

28/08/12 - 300024828-001-01

Key to access the parameters reserved for the installer

10

C002705-A

C002704-A

C002703-A

C002702-A

bar

r

STD

(

'

t

0 2 4 6 8 10 12 14 16 18 22 2420

C002696-A

p

b

AUTO

x

c

r

j

L

g

m

bar

STD

t

0 2 4 6 8 10 12 14 16 18 22 2420

C002701-B

p

b

AUTO

x

c

r

j

M

g

m

3. Description MCA 45 - 65 - 90 - 115

E

Keys on which the function varies as and when selections
are made

F

Rotary setting button:

4 Turn the rotary button to scroll through the menus or

modify a value

4 Press the rotary button to access the selected menu

or confirm a value modification

3.3.2. Description of the display

Key functions

n

>
(
'

?

f

STD

Access to the various menus

Used to scroll through the menus

Used to scroll through the parameters

The symbol is displayed when help is available

Used to display the curve of the parameter selected

Reset of the time programmes

b

Selection of comfort mode or selection of the days to be
programmed

v

Selection of reduced mode or deselection of the days to
be programmed

j

ESC

Back to the previous level

Back to the previous level without saving the
modifications made

t

Flame output level

n

Manual reset

The whole symbol flashes: The burner starts up but the
flame is not yet present

Part of the symbol flashes: Output is increasing

Steady symbol: The required output has been reached

11

Part of the symbol flashes: Output is dropping

28/08/12 - 300024828-001-01

L000200-A

L000201-A

L000198-A

L000199-A

bar

STD

t

0 2 4 6 8 10 12 14 16 18 22 2420

L000197-A

p

b

AUTO

x

c

r

j

M

g

m

bar

STD

t

0 2 4 6 8 10 12 14 16 18 22 2420

C002697-B

p

b

AUTO

x

c

r

j

M

g

m

bar

STD

t

0 2 4 6 8 10 12 14 16 18 22 2420

C002698-B

p

b

AUTO

x

c

r

j

M

g

m

MCA 45 - 65 - 90 - 115 3. Description

Solar (If connected)

n

u

The solar load pump is running

The top part of the tank is reheated to the tank set point

The entire tank is reheated to the tank set point

The entire tank is reheated to the solar tank set point

The tank is not loaded - Presence of the solar control
system

Operating modes

n

p

Summer mode: The heating is off. Domestic hot water
continues to be produced

b

WINTER mode: Heating and domestic hot water working

AUTO

x

m

g

m

Operation in automatic mode according to the timer
programme

Comfort mode: The symbol is displayed when a DAY
override (comfort) is activated

4 Flashing symbol: Temporary override

4 Steady symbol: Permanent override

Reduced mode: The symbol is displayed when a NIGHT
override (reduced) is activated

4 Flashing symbol: Temporary override

4 Steady symbol: Permanent override

Holiday mode: The symbol is displayed when a HOLIDAY
override (antifreeze) is activated

4 Flashing symbol: Holiday mode programmed

4 Steady symbol: Holiday mode active

Manual mode

28/08/12 - 300024828-001-01

12

bar

STD

t

0 2 4 6 8 10 12 14 16 18 22 2420

C002708-A

p

b

AUTO

x

c

r

j

M

g

m

bar

STD

t

0 2 4 6 8 10 12 14 16 18 22 2420

C002707-A

p

b

AUTO

x

c

r

j

M

g

m

bar

STD

t

0 2 4 6 8 10 12 14 16 18 22 2420

C002699-B

p

b

AUTO

x

c

r

j

M

g

m

3. Description MCA 45 - 65 - 90 - 115

System pressure

n

bar

Pressure indicator: The symbol is displayed when a water
pressure sensor is connected.

4 Flashing symbol: The water pressure is insufficient.

4 Steady symbol: The water pressure is sufficient.

l

Water pressure level

4 R : 0,9 to 1,1 bar
4 E : 1,2 to 1,5 bar
4 Z : 1,6 to 1,9 bar
4 A : 2,0 to 2,3 bar
4 l : > 2,4 bar

Domestic Hot Water override

n

A bar is displayed when a DHW override is activated:

4 Flashing bar: Temporary override

4 Steady bar: Permanent override

Other information

n

r

The symbol is displayed when domestic hot water
production is running.

w

Valve indicator: The symbol is displayed when a 3-way
valve is connected.

4 x : 3-way valve opens
4 c : 3-way valve closes

M

The symbol is displayed when the pump is operating.

Name of the circuit for which the parameters are
displayed.

13

28/08/12 - 300024828-001-01

bar

1

1

2

2

r

c

STD

(

'

t

v

0 2 4 6 8 10 12 14 16 18 22 2420

p

b

AUTO

x

c

r

j

L

g

m

#MEASURES

#CHOICE TIME PROG.

#TIME PROGRAM
#SETTING
#TIME .DAY

a

C002220-B-04

bar

1

1

2

2

r

c

STD

(

'

t

v

0 2 4 6 8 10 12 14 16 18 22 2420

p

b

AUTO

x

c

r

j

L

g

m

CURRENT PROG.B

CURRENT PROG.C

P2

P3

a

C002221-C-04

bar

1

1

2

2

r

c

STD

(

'

t

v

0 2 4 6 8 10 12 14 16 18 22 2420

p

b

AUTO

x

c

r

j

L

g

m

CURRENT PROG.C

"Choice of the timeprogram
applied C"

P4

a

C002222-C-04

bar

1

1

2

2

r

c

STD

(

'

t

v

0 2 4 6 8 10 12 14 16 18 22 2420

p

b

AUTO

x

c

r

j

M

g

m

LUNDI 11:45

C002224-D-04

2x

MCA 45 - 65 - 90 - 115 3. Description

3.3.3. Browsing in the menus

1. To select the desired menu, turn the rotary button.

2. To access the menu, press the rotary button.
To go back to the previous display, press the key j.

3. To select the desired parameter, turn the rotary button.

4. To modify the parameter, press the rotary button.
To go back to the previous display, press the key j.

5. To modify the parameter, turn the rotary button.

6. To confirm, press the rotary button.

To cancel, press key

h

.

7. To go back to the main display, press key j2 times.

It is possible to use the ( and ' keys instead of the rotary
button.

28/08/12 - 300024828-001-01

14

-

)

L

m

r

r

ddd

T

y

1
2

SERVICE

°C°Fh
barPsi
% rpm
kW uA
x10 l/min

°CSt:

C002968-D

t

h

j

A B

E F

C D

-

)

L

m

r

r

ddd

T

y

1
2

SERVICE

°C°Fh
barPsi
% rpm
kW uA
x10 l/min

°CSt:

C003042-B

t

h

j

3. Description MCA 45 - 65 - 90 - 115

3.4 IniControl control panel

3.4.1. Description of the keys

15

A

B

C

D

E

F

3.4.2. Description of the display

Key functions

n

G

t
d

[-]

Return button j, Escape G or Manual reset t
Heating temperature button d or [-]
DHW temperature button r or [+]
S [Enter] Key
) [Chimney-sweeping] keys

Press keys A and B simultaneously
f [Menu] keys

Press keys C and D simultaneously

Back to the previous level without saving the
modifications made

Manual reset

Central heating function:
Access to the max. heating temperature parameter.

To reduce a value

28/08/12 - 300024828-001-01

-

)

L

m

rrr

d

d

d

T

y

1
2

SERVICE

°C°Fh
barPsi
% rpm
kW uA
x10 l/min

°CSt:

M002717-A

t

h

j

-

)

L

m

rrr

ddd

T

y

1
2

SERVICE

°C°Fh
barPsi
% rpm
kW uA
x10 l/min

°CSt:

M002718-A

t

h

j

-

)

L

m

r

r

ddd

T

y

1
2

SERVICE

°C°Fh
barPsi
% rpm
kW uA
x10 l/min

°CSt:

C003046-B

t

h

j

-

)

L

m

r

r

ddd

T

y

1
2

SERVICE

°C°Fh

barPsi

% rpm
kW uA
x10 l/min

°CSt:

C003047-C

t

h

j

MCA 45 - 65 - 90 - 115 3. Description

r

[+]

®

Operating modes

n

d

D

r

S

m

DHW function:
Access to sanitary hot water temperature parameter.

To increase a value

Access the selected menu or confirm a value modification

State heating pump A

Heating programme deactivated:
The heating function is deactivated

State DHW pump

DHW deactivated

Manual mode

Flame output level

n

e
r
t
y

System pressure

n

bar

Low output level 0 - 25 %

Average output level 25 - 50 %

High output level 50 - 75 %

Output level 75 - 100 %

Pressure indicator:
The symbol is displayed next to the installation's pressure
value. If no water pressure sensor is connected, -.­appears on the display

28/08/12 - 300024828-001-01

16

-

)

L

m

r

r

ddd

T

y

1
2

SERVICE

°C°Fh
barPsi
% rpm
kW uA
x10 l/min

°CSt:

C003048-B

t

h

j

3. Description MCA 45 - 65 - 90 - 115

Other information

n

"

!

)

-

K

\

a

I

M

a

User menu:
Parameters at user level can be changed

Information menu:
Reading the various current values

Chimney-sweeping position:
Forced full or part load for CO2 measurement

Service menu:
Parameters at installer level can be changed

Display with the symbols:
$ + K + Z (Maintenance message)

Hour counter menu:
Readout of the operating hours, number of successful
starts and hours on mains supply

On/Off switch:
After 5 lock-outs, the device must be switched off/on again

Outside temperature sensor present

The symbol is displayed when the boiler pump is
operating

Defect:
Boiler indicates a fault. This is signalled by a P or X code

and a flashing display

17

28/08/12 - 300024828-001-01

C002366-B

Français - Deutsch - English ­Italiano - Espanol - Nederlands

- Pycck - Polski - Türk -

bar

1

1

2

2

r

c

STD

(

'

t

v

0 2 4 6 8 10 12 14 16 18 22 2420

p

b

x

c

r

g

m

ÿ

LANGUE FRANCAIS

C002286-C

bar

1

1

2

2

r

c

STD

(

'

t

v

0 2 4 6 8 10 12 14 16 18 22 2420

p

b

AUTO

x

c

r

j

M

g

m

SUNDAY 11:45

C002219-D-04

MCA 45 - 65 - 90 - 115 4. Operating the appliance - DIEMATIC iSystem

4 Operating the appliance - DIEMATIC

iSystem

4.1 Putting the appliance into operation

1. Check the water pressure in the installation shown on the control
panel display.

If the water pressure is lower than 0,8 bar, more water
should be added. If necessary, top up the water level in the
heating system (recommended hydraulic pressure
between 1,5 and 2,0 bar).

See chapter: "Filling the system", page 36

¼

2. Open the gas valve on the boiler.

3. Turn on the boiler using the on/off switch.

4.2 Reading out measured values

28/08/12 - 300024828-001-01

4. The first time the boiler is powered up, the LANGUAGE menu is
displayed. Select the desired language by turning the rotary
button.

5. To confirm, press the rotary button.
The boiler will begin an automatic venting-programme (which lasts
approx. 3 minutes) and will do this every time the power supply is
isolated. If there is a problem, the error is displayed on the screen.

The various values measured by the appliance are displayed in the
#MEASURES menu.

1. To access user level: Press the > key.

2. Select the menu #MEASURES.

4

Turn the rotary button to scroll through the menus or
modify a value.

4 Press the rotary button to access the selected menu

or confirm a value modification.

For a detailed explanation of menu browsing, refer

¼

to the chapter: "Browsing in the menus", page 14.

18

4. Operating the appliance - DIEMATIC iSystem MCA 45 - 65 - 90 - 115

User level - Menu #MEASURES

Parameter Description Unit

OUTSIDE TEMP.

ROOMTEMP. A

ROOMTEMP. B

ROOMTEMP. C

(1)

(1)

(1)

BOILER TEMP.

PRESSURE

WATER TEMP.

(1)

INST DWH TEMP.

STOR.TANK.TEMP

DCW TEMPERATURE

SWIMMING P.T.B

SWIMMING P.T.C

OUTLET TEMP. B

OUTLET TEMP. C

SYSTEM TEMP.

T.DHW BOTTOM

TEMP.TANK AUX

DHW A TEMP.

(1)

BACK TEMP

WIND SPEED

POWER

Outside temperature °C

Room temperature of circuit A °C

Room temperature of circuit B °C

Room temperature of circuit C °C

Water temperature in the boiler °C

Water pressure in the installation bar

Water temperature in the DHW tank °C

(1)

Instant hot water temperature °C

(1)

Water temperature in the storage tank °C

Domestic cold water temperature °C

(1)

Water temperature of the swimming pool on circuit B °C

(1)

Water temperature of the swimming pool on circuit C °C

(1)

Temperature of the flow water in circuit B °C

(1)

Temperature of the flow water in circuit C °C

(1)

Temperature of the system flow water if multi-generator °C

Water temperature in the bottom of the DHW tank °C

(1)

Water temperature in the second DHW tank connected to the AUX circuit °C

Water temperature in the second DHW tank connected to circuit A °C

Temperature of the boiler return water °C

Fan rotation speed rpm

Instantaneous boiler output (0%: Burner off or running at minimum output) %

CURRENT (µA) Ionization current µA

NB IMPULS.

Number of burner starts (not restartable)
The meter is incremented by 8 every 8 start-ups

RUNTIME

Number of burner operation hours (not restartable)

h

The meter is incremented by 2 every 2 hours

IN 0-10V

(1)

SEQUENCE

CTRL

(1) The parameter is only displayed for the options, circuits or sensors actually connected.

Voltage at input 0-10 V V

Control system sequence

Software control number

19

28/08/12 - 300024828-001-01

MODE

C002266-A

MCA 45 - 65 - 90 - 115 4. Operating the appliance - DIEMATIC iSystem

4.3 Changing the settings

4.3.1. Setting the set point temperatures

To set the various heating, DHW and swimming pool temperatures,
proceed as follows:

1. Press the C key.

2. To select the desired parameter, turn the rotary button.

3. To modify the parameter, press the rotary button.
To go back to the previous display, press the key j.

4. To modify the parameter, turn the rotary button.

5. To confirm, press the rotary button.

To cancel, press key

h

.

Menu C

Parameter Adjustment range Description Factory setting

DAY TEMP. A

NIGHT TEMP. A

DAY TEMP. B

(1)

NIGHT TEMP. B

DAY TEMP. C

(1)

NIGHT TEMP. C

WATER TEMP.

WATER T.NIGHT

(2)

TEMP.TANK AUX

AUX.TANK
T.NIGHT

(1)(2)

DHW A TEMP.

A.TANK T.NIGHT

(2)

SWIMMING P.T.B

SWIMMING P.T.C

(1) The parameter is only displayed for the options, circuits or sensors actually connected.
(2) The parameter is only displayed if INSTALLATION parameter is set to EXTENDED

5 to 30 °C Desired room temperature in comfort periods on circuit A 20 °C

5 to 30 °C Desired room temperature in reduced periods on circuit A 16 °C

5 to 30 °C Desired room temperature in comfort periods on circuit B 20 °C

(1)

5 to 30 °C Desired room temperature in reduced periods on circuit B 16 °C

5 to 30 °C Desired room temperature in comfort periods on circuit C 20 °C

(1)

5 to 30 °C Desired room temperature in reduced periods on circuit C 16 °C

(1)

10 to 80 °C Desired domestic hot water temperature in the DHW circuit 55 °C

(1)

10 to 80 °C Set tank temperature, night programme 10 °C

(1)

10 to 80 °C Desired domestic hot water temperature in the auxiliary circuit 55 °C

10 to 80 °C Set tank temperature, night programme 10 °C

(1)

10 to 80 °C Desired domestic hot water temperature in circuit A 55 °C

(1)

10 to 80 °C Set tank temperature, night programme 10 °C

(1)

5 to 39 °C Desired temperature for swimming pool B 20 °C

(1)

5 to 39 °C Desired temperature for swimming pool C 20 °C

28/08/12 - 300024828-001-01

20

MODE

C002267-A

4. Operating the appliance - DIEMATIC iSystem MCA 45 - 65 - 90 - 115

4.3.2. Selecting the operating mode

To select an operating mode, proceed as follows:

1. Press the MODE key.

2. To select the desired parameter, turn the rotary button.

3. To modify the parameter, press the rotary button.
To go back to the previous display, press the key j.

4. To modify the parameter, turn the rotary button.

5. To confirm, press the rotary button.

To cancel, press key h.

Menu MODE

Parameter Adjustment range Description Factory setting

AUTOMATIQUE

DAY

NIGHT

HOLIDAYS

SUMMER

MANUEL

FORCE AUTO

(1) The start and end days and the number of days are calculated in relation to each other.
(2) The parameter is only displayed if a room sensor is connected.

7/7, xx:xx Comfort mode is forced until the time indicated or all the time (7/7). Present time + 1

7/7, xx:xx Reduced mode is forced until the time indicated or all the time

7/7, 1 to 365 The antifreeze mode is active on all boiler circuits.

(2)

YES / NO An operating mode override is activated on the remote control

The comfort ranges are determined by the timer programme.

(7/7).

Number of days' holiday: xx
heating OFF: xx:xx
Restarting: xx:xx

The heating is off.
Domestic hot water continues to be produced.

The generator operates according to the set point setting. All of
the pumps operate. Option of setting the set point by simply
turning the rotary button.

(option).
To force all circuits to run on AUTOMATIQUE mode, select

YES.

(1)

(1)

(1)

hour

Present time + 1
hour

Present date + 1
day

21

28/08/12 - 300024828-001-01

MODE

C002268-A

bar

1

1

2

2

r

c

STD

(

'

t

v

0 2 4 6 8 10 12 14 16 18 22 2420

p

b

AUTO

x

c

r

j

M

g

m

SUNDAY 11:45

C002219-D-04

MCA 45 - 65 - 90 - 115 4. Operating the appliance - DIEMATIC iSystem

4.3.3. Forcing domestic hot water production

To force domestic hot water production, proceed as follows:

1. Press the r key.

2. To select the desired parameter, turn the rotary button.

3. To modify the parameter, press the rotary button.
To go back to the previous display, press the key j.

4. To modify the parameter, turn the rotary button.

5. To confirm, press the rotary button.

To cancel, press key h.

Menu r

Parameter Description Factory setting

AUTOMATIQUE

COMFORT

The domestic hot water comfort ranges are determined by the timer programme.

Domestic hot water comfort mode is forced until the time indicated or all the time (7/7). Present time + 1 hour

4.3.4. Setting the contrast and lighting on the

display

1. To access user level: Press the > key.

2. Select the menu #SETTING.

4

Turn the rotary button to scroll through the menus or
modify a value.

4 Press the rotary button to access the selected menu

or confirm a value modification.

For a detailed explanation of menu browsing, refer

¼

to the chapter: "Browsing in the menus", page 14.

3. Set the following parameters:

User level - Menu #SETTING

Parameter Adjustment range Description Factory setting Customer setting

CONTRAST DISP.

BACK LIGHT COMFORT

ECO

Adjusting the display contrast.

The screen is illuminated continuously in
daytime periods.

The screen is illuminated for 2 minutes
whenever pressed.

ECO

28/08/12 - 300024828-001-01

22

bar

1

1

2

2

r

c

STD

(

'

t

v

0 2 4 6 8 10 12 14 16 18 22 2420

p

b

AUTO

x

c

r

j

M

g

m

SUNDAY 11:45

C002219-D-04

bar

1

1

2

2

r

c

STD

(

'

t

v

0 2 4 6 8 10 12 14 16 18 22 2420

p

b

AUTO

x

c

r

j

M

g

m

SUNDAY 11:45

C002219-D-04

4. Operating the appliance - DIEMATIC iSystem

4.3.5. Setting the time and date

1. To access user level: Press the > key.

2. Select the menu #TIME .DAY.

4 Turn the rotary button to scroll through the menus or

modify a value.

4 Press the rotary button to access the selected menu

or confirm a value modification.

For a detailed explanation of menu browsing, refer

¼

to the chapter: "Browsing in the menus", page 14.

3. Set the following parameters:

MCA 45 - 65 - 90 - 115

User level - Menu #TIME .DAYHEURE / JOUR}

(1)

Parameter Adjustment range Description Factory setting Customer setting

HOURS

MINUTE

DAY

DATE

MONTH

YEAR

SUM. TIME: AUTO

0 to 23 Hours setting

0 to 59 Minutes setting

Monday to Sunday Setting the day of the week

1 to 31 Day setting

January to December Month setting

2008 to 2099 Year setting

automatic switch to summer time on the last Sunday

AUTO

in March and back to winter time on the last Sunday
in October.

MANU

for countries where the time change is done on
other dates or is not in use.

(1) According to the configuration

4.3.6. Selecting a timer programme

1. To access user level: Press the > key.

2. Select the menu #CHOICE TIME PROG..

23

4

Turn the rotary button to scroll through the menus or
modify a value.

4 Press the rotary button to access the selected menu

or confirm a value modification.

For a detailed explanation of menu browsing, refer

¼

to the chapter: "Browsing in the menus", page 14.

3. To select the desired parameter.

4. Assign the desired timer programme (P1 to P4) to the circuit with
the rotary button.

28/08/12 - 300024828-001-01

bar

1

1

2

2

r

c

STD

(

'

t

v

0 2 4 6 8 10 12 14 16 18 22 2420

p

b

AUTO

x

c

r

j

M

g

m

SUNDAY 11:45

C002219-D-04

bar

1

1

2

2

r

c

STD

(

'

t

v

0 2 4 6 8 10 12 14 16 18 22 2420

p

b

AUTO

x

c

r

j

L

g

m

PROG P2 C
Mo Tu We Th Fr Sa Su
"Display of the timeprogram.
To continuepush on the button"

a

C002228-B-04

MCA 45 - 65 - 90 - 115

4. Operating the appliance - DIEMATIC iSystem

User level - Menu #CHOICE TIME PROG.

Parameter Adjustment range Description

CURRENT PROG.A

P1 / P2 / P3 / P4 Comfort programme activated

(Circuit A)

CURRENT PROG.B

P1 / P2 / P3 / P4 Comfort programme activated

(Circuit B)

CURRENT PROG.C

P1 / P2 / P3 / P4 Comfort programme activated

(Circuit C)

4.3.7. Customising a timer programme

1. To access user level: Press the > key.

2. Select the menu #TIME PROGRAM.

4 Turn the rotary button to scroll through the menus or

modify a value.

4 Press the rotary button to access the selected menu

or confirm a value modification.

For a detailed explanation of menu browsing, refer

¼

to the chapter: "Browsing in the menus", page 14.

3. To select the desired parameter.

User level - Menu #TIME PROGRAM

Parameter Time schedule Description

TIME PROG.A PROG P2 A

Timer programme for circuit A

PROG P3 A
PROG P4 A

TIME PROG.B PROG P2 B

Timer programme for circuit B

PROG P3 B
PROG P4 B

TIME PROG.C PROG P2 C

Timer programme for circuit C

PROG P3 C
PROG P4 C

TIME PROG.DHW

TIME PROG.AUX

DHW circuit timer programme

Auxiliary circuit timer programme

4. To select a timer programme to be modified.

To select to days for which the timer programme is to be

5.
modified:
Turn the rotary button to the left until you reach the day desired.
To confirm, press the rotary button.

28/08/12 - 300024828-001-01

24

bar

1

1

2

2

r

c

STD

(

'

t

v

0 2 4 6 8 10 12 14 16 18 22 2420

p

b

AUTO

x

c

r

j

L

g

m

PROG P2 C
Mo Tu

We Th Fr Sa Su

"Select the days to
program"

a

C002229-C-04

bar

1

1

2

2

r

c

STD

(

'

t

v

0 2 4 6 8 10 12 14 16 18 22 2420

p

b

AUTO

x

c

r

j

L

g

m

PROG P2 C
Mo Tu

We Th Fr Sa Su

Set the time program.

a

C002230-E-04

06:00

06:00

4. Operating the appliance - DIEMATIC iSystem MCA 45 - 65 - 90 - 115

6.b : Day selection
Press key b / v until the symbol b is displayed.
Turn the rotary button to the right to select the day(s) desired.

: Cancelling the day selection

v

Press key b / v until the symbol v is displayed.
Turn the rotary button to the right to cancel selection of the relevant

day(s).

7. When the days desired for the programme have been selected,
press the rotary button to confirm.

To define the timer ranges for the comfort mode and reduced

8.
mode:
Turn the rotary button to the left until 0:00 is displayed. The first
segment of the graphic bar for the timer programme flashes.

9.b : Comfort mode selection
Press key b / v until the symbol b is displayed.
To select a comfort time range, turn the rotary button to the right.

: Reduced mode selection

v

Press key b / v until the symbol v is displayed.
To select a reduced time range, turn the rotary button to the right.

10.When the times for the comfort mode have been selected, press
the rotary button to confirm.

User level - Menu #TIME PROGRAM

TIME PROG.A

Day Comfort periods / Filling enabled:

Monday 6:00 to 22:00

Tuesday 6:00 to 22:00

Wednesday 6:00 to 22:00

Thursday 6:00 to 22:00

Friday 6:00 to 22:00

Saturday 6:00 to 22:00

Sunday 6:00 to 22:00

TIME PROG.B

Monday 6:00 to 22:00

Tuesday 6:00 to 22:00

Wednesday 6:00 to 22:00

Thursday 6:00 to 22:00

Friday 6:00 to 22:00

Saturday 6:00 to 22:00

Sunday 6:00 to 22:00

TIME PROG.C

Monday 6:00 to 22:00

Tuesday 6:00 to 22:00

Wednesday 6:00 to 22:00

Thursday 6:00 to 22:00

Friday 6:00 to 22:00

Saturday 6:00 to 22:00

Sunday 6:00 to 22:00

P1
_______________

P2 _______________ P3 _______________ P4 _______________

25

28/08/12 - 300024828-001-01

bar

1

1

2

2

r

c

STD

(

'

t

v

0 2 4 6 8 10 12 14 16 18 22 2420

p

b

AUTO

x

c

r

j

M

g

m

SUNDAY 11:45

C002219-D-04

MCA 45 - 65 - 90 - 115 4. Operating the appliance - DIEMATIC iSystem

User level - Menu #TIME PROGRAM

TIME PROG.DHW

TIME PROG.AUX

Day Comfort periods / Filling enabled:

P1

P2 _______________ P3 _______________ P4 _______________

_______________

Monday

Tuesday

Wednesday

Thursday

Friday

Saturday

Sunday

Monday

Tuesday

Wednesday

Thursday

Friday

Saturday

Sunday

4.3.8. Setting an annual clock

28/08/12 - 300024828-001-01

The annual clock is used to programme up to 10 heating stop periods
over one year. The circuits selected for this stop are in Antifreeze
mode during the period chosen.

1. To access user level: Press the > key.

2. Select the menu #ANNUAL PROG.

4

Turn the rotary button to scroll through the menus or
modify a value.

4 Press the rotary button to access the selected menu

or confirm a value modification.

For a detailed explanation of menu browsing, refer

¼

to the chapter: "Browsing in the menus", page 14.

3. To select the desired parameter.

OFF

A

B

A+B

C

A+C

B+C

A+B+C

SU

A+E

B+E

A+B+W

C+E

No stop

circuit A

circuit B

circuit A, B

circuit C

circuit A, C

circuit B, C

circuit A, B, C

DHW circuit

circuit A and DHW

circuit B and DHW

circuit A, B and DHW

circuit C and DHW

26

4. Operating the appliance - DIEMATIC iSystem MCA 45 - 65 - 90 - 115

A+C+W

B+C+W

ALL

circuit A, C and DHW

circuit B, C and DHW

circuit A, B, C and DHW

4. Set the start date and the end date of the shutdown selected.

5. To deactivate a shutdown, select the shutdown and set to OFF.

6. To select another shutdown, press the ' button.

Annual programme (Factory setting)

Stop no. Circuit concerned Start date End date

1

2

3

4

5

6

7

8

9

10

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

01-01 01-01

01-01 01-01

01-01 01-01

01-01 01-01

01-01 01-01

01-01 01-01

01-01 01-01

01-01 01-01

01-01 01-01

01-01 01-01

User level - Menu #ANNUAL PROG

STOP N 1:

STOP N 2:

STOP N 3:

BEG.DATE N 01

BEG.MONTH N 01

END DATE N 01

END MONTH N 01

BEG.DATE N 02

BEG.MONTH N 02

END DATE N 02

END MONTH N 02

BEG.DATE N 03

BEG.MONTH N 03

END DATE N 03

END MONTH N 03

For example: Customised programming

Stop no. Circuit concerned Start date End date

1

2

A+C

A+C

01-11 10-11

20-12 02-01

If setting STOP: OFF, the stop is deactivated and the start and end
dates are not displayed.

Description Factory

setting

Selection of the circuit stopped

Setting start date of the stop 01 1-31

Setting start month of the stop 01 1-12

Setting end date of the stop 01 1-31

Setting end month of the stop 01 1-12

Selection of the circuit stopped

Setting start date of the stop 01 1-31

Setting start month of the stop 01 1-12

Setting end date of the stop 01 1-31

Setting end month of the stop 01 1-12

Selection of the circuit stopped

Setting start date of the stop 01 1-31

Setting start month of the stop 01 1-12

Setting end date of the stop 01 1-31

Setting end month of the stop 01 1-12

OFF

OFF

OFF

Adjustment range

OFF, A, B, A+B, C, A+C, B+C, A+B+C,
SU, A+E, B+E, A+B+W, C+E, A+C+W, B
+C+W, ALL

OFF, A, B, A+B, C, A+C, B+C, A+B+C,
SU, A+E, B+E, A+B+W, C+E, A+C+W, B
+C+W, ALL

OFF, A, B, A+B, C, A+C, B+C, A+B+C,
SU, A+E, B+E, A+B+W, C+E, A+C+W, B
+C+W, ALL

27

28/08/12 - 300024828-001-01

MCA 45 - 65 - 90 - 115 4. Operating the appliance - DIEMATIC iSystem

User level - Menu #ANNUAL PROG

STOP N 4:

STOP N 5:

STOP N 6:

STOP N 7:

STOP N 8:

STOP N 9:

STOP N 10:

BEG.DATE N 04

BEG.MONTH N 04

END DATE N 04

END MONTH N 04

BEG.DATE N 05

BEG.MONTH N 05

END DATE N 05

END MONTH N 05

BEG.DATE N 06

BEG.MONTH N 06

END DATE N 06

END MONTH N 06

BEG.DATE N 07

BEG.MONTH N 07

END DATE N 07

END MONTH N 07

BEG.DATE N 08

BEG.MONTH N 08

END DATE N 08

END MONTH N 08

BEG.DATE N 09

BEG.MONTH N 09

END DATE N 09

END MONTH N 09

BEG.DATE N 10

BEG.MONTH N 10

END DATE N 10

END MONTH N 10

Description Factory

setting

Selection of the circuit stopped

Setting start date of the stop 01 1-31

Setting start month of the stop 01 1-12

Setting end date of the stop 01 1-31

Setting end month of the stop 01 1-12

Selection of the circuit stopped

Setting start date of the stop 01 1-31

Setting start month of the stop 01 1-12

Setting end date of the stop 01 1-31

Setting end month of the stop 01 1-12

Selection of the circuit stopped

Setting start date of the stop 01 1-31

Setting start month of the stop 01 1-12

Setting end date of the stop 01 1-31

Setting end month of the stop 01 1-12

Selection of the circuit stopped

Setting start date of the stop 01 1-31

Setting start month of the stop 01 1-12

Setting end date of the stop 01 1-31

Setting end month of the stop 01 1-12

Selection of the circuit stopped

Setting start date of the stop 01 1-31

Setting start month of the stop 01 1-12

Setting end date of the stop 01 1-31

Setting end month of the stop 01 1-12

Selection of the circuit stopped

Setting start date of the stop 01 1-31

Setting start month of the stop 01 1-12

Setting end date of the stop 01 1-31

Setting end month of the stop 01 1-12

Selection of the circuit stopped

Setting start date of the stop 01 1-31

Setting start month of the stop 01 1-12

Setting end date of the stop 01 1-31

Setting end month of the stop 01 1-12

OFF

OFF

OFF

OFF

OFF

OFF

OFF

Adjustment range

OFF, A, B, A+B, C, A+C, B+C, A+B+C,
SU, A+E, B+E, A+B+W, C+E, A+C+W, B
+C+W, ALL

OFF, A, B, A+B, C, A+C, B+C, A+B+C,
SU, A+E, B+E, A+B+W, C+E, A+C+W, B
+C+W, ALL

OFF, A, B, A+B, C, A+C, B+C, A+B+C,
SU, A+E, B+E, A+B+W, C+E, A+C+W, B
+C+W, ALL

OFF, A, B, A+B, C, A+C, B+C, A+B+C,
SU, A+E, B+E, A+B+W, C+E, A+C+W, B
+C+W, ALL

OFF, A, B, A+B, C, A+C, B+C, A+B+C,
SU, A+E, B+E, A+B+W, C+E, A+C+W, B
+C+W, ALL

OFF, A, B, A+B, C, A+C, B+C, A+B+C,
SU, A+E, B+E, A+B+W, C+E, A+C+W, B
+C+W, ALL

OFF, A, B, A+B, C, A+C, B+C, A+B+C,
SU, A+E, B+E, A+B+W, C+E, A+C+W, B
+C+W, ALL

28/08/12 - 300024828-001-01

28

4. Operating the appliance - DIEMATIC iSystem MCA 45 - 65 - 90 - 115

4.4 Installation shutdown

CAUTION

Do not switch off the mains supply to the appliance. If the
central heating system is not used for a long period, we
recommend activating the HOLIDAYS mode (to ensure
the anti-grip of the heating pump).

4.5 Frost protection

CAUTION

4 The antifreeze protection does not function if the

appliance is switched off.

4 The integrated protection system only protects the

boiler, not the installation. To protect the installation,
set the appliance to HOLIDAYS mode.

The HOLIDAYS mode protects:

4 The installation if the outside temperature is lower than 3°C

(factory setting).

4 The room temperature if a remote control is connected and the

room temperature is lower than 6 °C (factory setting).

4 The domestic hot water tank if the tank temperature is lower

than 4 °C (the water is reheated to 10 °C).

To configure the holidays mode: ¼ See chapter: "Selecting the
operating mode", page 21.

29

28/08/12 - 300024828-001-01

MCA 45 - 65 - 90 - 115

5. Operating the appliance - IniControl

5 Operating the appliance - IniControl

5.1 Putting the appliance into operation

1. Check the water pressure in the installation shown on the control
panel display.

If the water pressure is lower than 0,8 bar, more water
should be added. If necessary, top up the water level in the
heating system (recommended hydraulic pressure
between 1,5 and 2,0 bar).

See chapter: "Filling the system", page 36

¼

2. Open the gas valve on the boiler.

3. Switch on the boiler.

4. The start-up cycle begins 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. A vent cycle of a duration of around 3 minutes is carried out
automatically.

6. In addition to 0, in STAND-BY the display normally shows the

water pressure and the symbols d,

: Software version

: Parameter version

5tH

and r.

5.2 Reading out measured values

The following current values can be read off the information menu
Q:

4 5t = State.
4 5v = Sub-status.
4 t1 = Supply temperature (°C).
4 t" = Return temperature (°C).
4 t3 = Calorifier temperature (°C).
4 t4 = Outside temperature (°C).
4 t5 = Solar boiler temperature (°C).
4 5p = Internal set point (°C).
4 fl = Ionization current (µA).
4 Mf = Fan speed in rpm.
4 pr = Water pressure (bar).
4 p; = Supplied relative heat output (%).

28/08/12 - 300024828-001-01

30

)

r

d

bar

C003049-A

t

h

j

h

j

4x

2x

5. Operating the appliance - IniControl MCA 45 - 65 - 90 - 115

The current values can be read as follows:

1. Press the two f keys simultaneously. The symbol Q flashes.

2. Confirm using key S.

is displayed, alternating with the

5t

current status 3 (for example).

3. Press the [+] key.

sub-status

(for example).

30

4. Press the [+] key.

flow temperature

is displayed, alternating with the current

5v

is displayed, alternating with the current

t1

°C (for example).

60

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

t", t3, t4, t5

6. Press the [+] key.

set point

°C (for example).

88

7. Press the [+] key.

ionization current

8. Press the [+] key.

fan rotation speed

9. Press the [+] key.

water pressure

#0

is displayed, alternating with the internal

5p

is displayed, alternating with the current

fl

µA (for example).

70

is displayed, alternating with the current

Mf

3000

pr

rpm (for example).

is displayed, alternating with the current

bar (for example). If no water pressure sensor

.

is connected, [-.-] appears on the display.

10.Press the [+] key.

modulation percentage

11.Press the [+] key. The readout cycle starts again with

is displayed, alternating with the current

p;

% (for example).

78

5t

.

12.Press the j key 2 times to return to the current operating mode.

5.3 Changing the settings

Description Adjustment range Factory setting

Maximum outlet temperature 20 to 90 °C 80 80 80 80

Domestic hot water temperature: T

Heating / DHW mode Do not modify 1 1 1 1

ECO mode Do not modify 2 2 2 2

Anticipation resistance Do not modify 0 0 0 0

Parameter

p1
p2

p3
p4
p5

31

5.3.1. Parameter descriptions

SET

40 to 65 °C 60 60 60 60

MCA

45 65 90 115

28/08/12 - 300024828-001-01

)

r

d

bar

C003050-A

t

h

j

h

j

1x

2x

MCA 45 - 65 - 90 - 115 5. Operating the appliance - IniControl

Parameter Description Adjustment range Factory setting

MCA

45 65 90 115

p6
p7

p8

Display screen Do not modify 2 2 2 2

Post-circulation of the boiler pump connected to the PCU 1 to 98 minutes

99 minutes = continuous

Brightness of display lighting Do not modify 1 1 1 1

3 3 3 3

5.3.2. Modification of the user-level parameters

Parameters p1 to p8 can be modified by the user in order to meet
central heating and DHW comfort needs.

CAUTION

Modification of the factory settings may be detrimental to
the functioning of the appliance.

1. Press the two keys f simultaneously and then key [+] until the
symbol W flashes on the menu bar.

2. Select the users menu using the key S.

flashing.

1

3. Press the S key a second time. The value 80°C appears and
flashes (for example).

4. Change the value by pressing the [-] or [+] key. In this example
using key [-] to

5. Confirm the value with the S key.

60

°C.

p[1

flashing.

6. Press the j key 2 times to return to the current operating mode.

is displayed with

p[1

is displayed with

1

The parameters

4

same way as

p1

p2

to

are changed in the

p8

. After step 2, use the [+] key to

move to the required parameter.

4 The parameters

temperature) and

(the maximum heating water

p1

(the maximum drinking water

p2

temperature) can also be modified using the quick
selection menu.

28/08/12 - 300024828-001-01

32

)

m

r

d

bar

C003051-A

t

h

j

h

j

2x

2x

bar

d

C003052-A

1x

5. Operating the appliance - IniControl

MCA 45 - 65 - 90 - 115

5.3.3. Setting the manual mode

In some cases it may be necessary to switch the boiler to manual
operation, For example, if the controller has not yet been
connected. The boiler can be switched to automatic or manual
operation under the symbol m. To do this, proceed as follows:

1. Press the two keys f simultaneously and then key [+] until the
symbol m flashes on the menu bar.

2. Press the S key:

or

The text

sensor is connected). The flow temperature is determined by the
internal heating curve.

or

The value of the minimum flow temperature.

3. Press the [-] or [+] key to increase this value temporarily in manual
operation.

4. Confirm the value with the S key. The boiler is now set to manual
operation.

5. Press the j key 2 times to return to the current operating mode.

with the current water pressure (only if an outside

Zv

5.3.4. Changing the heating temperature

If using an outside temperature sensor, 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 1 times.

2. The symbol d and the current temperature are displayed (the
temperature flashes, e.g.

85

°C).

3. Change the value by pressing the [-] or [+] key. In this example
using key [-] to

60

°C.

4. To confirm, press the S key.

It also possible to modify this setting using the parameter

.

p1

5.3.5. Modifying the domestic hot water

temperature setting

33

It may be that a lower domestic hot water temperature will be sufficient
for your needs. Reduce this temperature and save energy. To do this,
proceed as follows:

28/08/12 - 300024828-001-01

C003053-A

r

1x

MCA 45 - 65 - 90 - 115 5. Operating the appliance - IniControl

1. Press the r key 1 times.

2. The symbol r and the current temperature are displayed (the
temperature flashes, e.g.

60

°C).

3. Change the value by pressing the [-] or [+] key. In this example
using key [-] to

55

°C.

4. To confirm, press the S key.

5.4 Installation shutdown

CAUTION

Do not switch off the boiler.

If the central heating system is not used for a long period, we
recommend proceeeding as follows:

4 Press key d until OFF is displayed.
4 Press key r until OFF is displayed.

5.5 Frost protection

When the heating water temperature in the boiler is too low, the
integrated boiler protection system starts up. This protection functions
as follows:

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

up.

4 If the water temperature is lower than 4°C, the boiler starts up.

4 If the water temperature is higher than 10°C, the boiler shuts down

and the circulation pump continues to run for a short time.

4 If the water temperature in the storage tank is less than 4°C, it is

reheated to its set point.

28/08/12 - 300024828-001-01

34

bar

1

1

2

2

r

c

STD

(

'

t

v

0 2 4 6 8 10 12 14 16 18 22 2420

p

b

AUTO

x

c

r

j

M

g

m

SUNDAY 11:45

TEMP. : 68°

PCU COM.FAIL D27

C002302-D-04

6. Checking and maintenance MCA 45 - 65 - 90 - 115

6 Checking and maintenance

6.1 General instructions

The boiler does not require a lot of maintenance. Nevertheless, we
recommend having the boiler inspected and serviced at regular
intervals.

4 Maintenance and cleaning of the boiler must be carried out at least

once a year by a qualified technician.

4 Have the flues swept at least once a year or more, depending on

the regulations in force in your country.

CAUTION

4 Maintenance operations must be done by a qualified

engineer.

4 We recommend taking out a maintenance contract.

4 Only original spare parts must be used.

4 Make certain that the flues and chimneys are

connected, in good condition and not blocked.

6.2 Periodic checks

6.1.1. DIEMATIC iSystem control panel

The boiler displays a message whenever maintenance is necessary.

1. When the message, REVISION, is displayed, press ? to display
the installer's telephone number.

2. Contact the fitter.

3. Have the required checks and services done.

4 Check the water pressure in the installation.

If the water pressure is lower than 0,8 bar, more water
should be added. If necessary, top up the water level in the
heating system (recommended hydraulic pressure
between 1,5 and 2,0 bar).

¼ See chapter: "Filling the system", page 36.

35

28/08/12 - 300024828-001-01

T001507-B

1

2

3

4

T000181-B

1

2

3

4

T000181-B

T000182-A

T000185-A

MCA 45 - 65 - 90 - 115

6.3 Filling the system

6. Checking and maintenance

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).

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.

1. Check the water pressure in the installation shown on the control
panel display.

If the water pressure is lower than 0,8 bar, more water
should be added. If necessary, top up the water level in the
heating system (recommended hydraulic pressure
between 1,5 and 2,0 bar).

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

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

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

28/08/12 - 300024828-001-01

36

T000845-A

T000846-A

T000847-A

T000848-A

6. Checking and maintenance MCA 45 - 65 - 90 - 115

5. To fill with water, use a filling tube with two tap connections, a rag
and a bleed key.

6. Connect the filling tube to a (cold) water tap.

7. Eliminate the air from the filling tube. Slowly fill the tube with
water. Hold the end of the tube up, above a bucket. Turn off the
tap as soon as water runs out of the pipe.

8. Unscrew the plug from the filling/draw-off valve.

The filling/draw-off valve is not necessarily located next to
the boiler.

37

28/08/12 - 300024828-001-01

T000849-A

T000850-A

T000853-A

MCA 45 - 65 - 90 - 115 6. Checking and maintenance

9. Attach the tube to the filling/draw-off valve. Firmly tighten the nut
on the filling tube.

10.Open the filling/draw-off valve on the heating system.

11.Open the running water tap.

12.Check the water pressure in the installation shown on the control
panel display.

13.Close the water tap when the water pressure reaches 2 bar.

14.Close the filling/draw-off valve on the heating system.Leave the
tube on the filling/draw-off valve until the air is purged from the
installation.

When water is added, air gets into the heating system.
Degas the installation. After the air has been vented, the
water pressure can drop below the required level. Check
the water pressure in the installation shown on the control
panel display. If the water pressure is lower than 0,8 bar,
more water should be added.

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

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.

28/08/12 - 300024828-001-01

38

1

2

3

4

T000181-B

T000184-A

T000185-A

T000854-A

3

1

4

5

2

6. Checking and maintenance MCA 45 - 65 - 90 - 115

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 heating set point to as high a temperature as possible.

3. Wait until the radiators are hot.

4. Switch the boiler off.

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

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

39

28/08/12 - 300024828-001-01

T000217-A

T000218-A

MCA 45 - 65 - 90 - 115 6. Checking and maintenance

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

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

CAUTION

The water may still be hot.

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

10.After venting, check whether the pressure in the installation is still
sufficient.

If the water pressure is lower than 0,8 bar, more water
should be added. If necessary, top up the water level in the
heating system (recommended hydraulic pressure
between 1,5 and 2,0 bar).

See chapter: "Filling the system", page 36

¼

11.Set the heating set point.

28/08/12 - 300024828-001-01

40

1

2

3

4

T000181-B

T000185-A

T000858-A

6. Checking and maintenance MCA 45 - 65 - 90 - 115

6.5 Draining the installation

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.

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.

41

28/08/12 - 300024828-001-01

MCA 45 - 65 - 90 - 115 7. Troubleshooting

7 Troubleshooting

7.1 Anti-hunting

This display only concerns boilers with the DIEMATIC
iSystem control panel.

When the boiler is in Anti-short-cycle operating mode, the symbol ?
flashes.

1. Press the "?" key.
The message Operation assured when the restart temperature
will be reached is displayed.

This message is not an error message but an item of
information.

7.2 Messages (Code type Bxx or Mxx)

In the case of failure, the control panel displays a message and a
corresponding code.

1. Make a note of the code displayed.
The code is important for the correct and rapid diagnosis of the
type of failure and for any technical assistance that may be
needed.

2. Switch the boiler off and switch back on.
The boiler starts up again automatically when the reason for the
blocking has been removed.

3. If the code is displayed again, correct the problem by following the
instructions in the table below:

Depending on the control panel, the message display is
different:

4 DIEMATIC iSystem control panel: The code and the

4 IniControl control panel: Only the code is displayed.

message are displayed.

28/08/12 - 300024828-001-01

42

7. Troubleshooting MCA 45 - 65 - 90 - 115

Code Messages Description Checking / solution

B00 BL.CRC.PSU

The PSU PCB is incorrectly
configured

Parameter error on the PSU PCB

4 Contact the professional who takes care of maintenance of

the appliance

B01 BL.MAX BOILER

B02 BL.HEATING

SPEED

Maximum flow temperature
exceeded

The increase in flow temperature
has exceeded its maximum limit

The water flow in the installation is insufficient

4 Check the circulation (direction, pump, valves)

The water flow in the installation is insufficient

4 Check the circulation (direction, pump, valves)

4 Check the water pressure

Sensor error

4 Contact the professional who takes care of maintenance of

the appliance

B07 BL.DT OUTL RET.

Maximum difference between the
flow and return temperature
exceeded

The water flow in the installation is insufficient

4 Check the circulation (direction, pump, valves)

4 Check the water pressure

Sensor error

4 Contact the professional who takes care of maintenance of

the appliance

B08 BL.RL OPEN

The RL inlet on the PCU PCB
terminal block is open

Parameter error

4 Contact the professional who takes care of maintenance of

the appliance

Bad connection

B09 BL.INV. L/N

B10

BL.BL INPUT

B11

OPEN

B13 BL. PCU COM

BL.COM PCU-D4

B14 BL.WATER MIS.

B15 BL.GAS PRESS

B16

BL.BAD SU

4 Contact the professional who takes care of maintenance of

the appliance

4 Contact the professional who takes care of maintenance of the appliance

The BL inlet on the PCU PCB
terminal block is open

The contact connected to the BL inlet is open

4 Contact the professional who takes care of maintenance of

the appliance

Parameter error

4 Contact the professional who takes care of maintenance of

the appliance

Bad connection

4 Contact the professional who takes care of maintenance of

the appliance

Communication error with the
SCU PCB

Bad connection

4 Contact the professional who takes care of maintenance of

the appliance

SCU PCB not installed in the boiler

4 Contact the professional who takes care of maintenance of

the appliance

The water pressure is lower than
0,8 bar

Not enough water in the circuit

4 Top up the installation with water

Gas pressure too low Incorrect setting of the gas pressure switch on the SCU PCB

4 Check that the gas valve is fully opened

4 Contact the professional who takes care of maintenance of

the appliance

The SU PCB is not recognised Wrong SU PCB for this boiler

B17 BL.PCU ERROR

43

The parameters saved on the
PCU PCB are impaired

4 Contact the professional who takes care of maintenance of

the appliance

Parameter error on the PCU PCB

4 Contact the professional who takes care of maintenance of

the appliance

28/08/12 - 300024828-001-01

MCA 45 - 65 - 90 - 115 7. Troubleshooting

Code Messages Description Checking / solution

B18 BL.BAD PSU

B19 BL.NO CONFIG

B21 BL. COM SU

B22 BL.FLAME LOS

B25

BL.SU ERROR

B26 BL.DHW. S.

B27 BL.DHW INST

M04 REVISION

The PSU PCB is not recognised Wrong PSU PCB for this boiler

4 Contact the professional who takes care of maintenance of

the appliance

The boiler has not been
configured

Communication error between the
PCU and SU PCBs

No flame during operation No ionization current

Internal error on the SU PCB

The DHW tank sensor is
disconnected or short circuited

The sensor on the plate
exchanger outlet is disconnected
or short circuited

A service is required The date programmed for the service has been reached

The PSU PCB has been changed

4 Contact the professional who takes care of maintenance of

the appliance

Bad connection

4 Contact the professional who takes care of maintenance of

the appliance

4 Check that the gas valve is fully opened

4 Contact the professional who takes care of maintenance of

the appliance

4 Contact the professional who takes care of maintenance of

the appliance

4 Contact the professional who takes care of maintenance of

the appliance

4 Contact the professional who takes care of maintenance of

the appliance

M05 REVISION A

M06

REVISION B

M07 REVISION C

M20 DISGAS

FL.DRY.B XX
DAYS

FL.DRY.C XX
DAYS

FL.DRY.B+C XX
DAYS

M23 CHANGE OUTSI.S

STOP N XX

4 If the symbol ? flashes, press key ?. The installer's contact

details are displayed.

4 Contact the professional who takes care of maintenance of

the appliance

An A, B or C service is required The date programmed for the service has been reached

4 If the symbol ? flashes, press key ?. The installer's contact

details are displayed.

4 Contact the professional who takes care of maintenance of

the appliance

A boiler vent cycle is underway Switching the boiler on

4 Wait 3 minutes
Floor drying is active
XX DAYS = Number of days' floor

drying remaining.

The outside temperature sensor is
defective.

The shutdown is active
XX = Number of the active
shutdown

Floor drying is underway. Heating on the circuits not concerned
is shut down.

4 Contact the professional who takes care of maintenance of

the appliance

Change the outside radio temperature sensor.

A shutdown is underway. The circuits selected for this stop are
in Antifreeze mode during the period chosen.

28/08/12 - 300024828-001-01

44

bar

1

1

2

2

r

c

STD

(

t

v

0 2 4 6 8 10 12 14 16 18 22 2420

p

b

AUTO

x

c

r

j

M

g

m

SUNDAY 11:45

TEMP. : 68°

PCU. COM. FAIL. D27

C002604-B-04

bar

1

1

2

2

r

c

STD

(

'

t

v

0 2 4 6 8 10 12 14 16 18 22 2420

p

b

AUTO

x

c

r

j

M

g

m

SUNDAY 11:45

TEMP. : 68°

PCU COM.FAIL D27

C002302-D-04

7. Troubleshooting

7.3 Faults (Code type Lxx or Dxx)

In the event of operational failure, the control panel flashes and
displays an error message and a corresponding code.

7.3.1. DIEMATIC iSystem control panel

1. Make a note of the code displayed.
The code is important for the correct and rapid diagnosis of the
type of failure and for any technical assistance that may be
needed.

2. Press the t key. If the code is displayed again, switch off the boiler
and then switch it back on.

MCA 45 - 65 - 90 - 115

Depending on the control panel, the message display is
different:

4 DIEMATIC iSystem control panel: The code and the

message are displayed.

4 IniControl control panel: Only the code is displayed.

3. Press the ? key. Follow the instructions displayed to solve the
problem.

4. Consult the meaning of the codes in the table below:

7.3.2. IniControl control panel

1. Make a note of the code displayed.
The code is important for the correct and rapid diagnosis of the
type of failure and for any technical assistance that may be
needed.

2. Press the t key. If the code is displayed again, switch off the boiler
and then switch it back on.

7.3.3. List of faults

45

28/08/12 - 300024828-001-01

MCA 45 - 65 - 90 - 115 7. Troubleshooting

Code Faults Cause

of the
fault

L00 PSU FAIL

L01 PSU PARAM FAIL

L02 DEF.OUTLET S.

L03 DEF.OUTLET S.

L04 DEF.OUTLET S.

PCU PSU PCB not connected Bad connection

PCU The safety parameters are incorrect Bad connection

PCU The boiler flow sensor has short-

PCU The boiler flow sensor is on an open

PCU Boiler temp too low Bad connection

Description Checking / solution

PSU PCB faulty

4 Contact the professional who takes care of

maintenance of the appliance

PSU PCB faulty

4 Contact the professional who takes care of

maintenance of the appliance

Bad connection

circuited

Sensor fault

4 Contact the professional who takes care of

maintenance of the appliance

Bad connection

circuit

Sensor fault

4 Contact the professional who takes care of

maintenance of the appliance

Sensor fault

4 Contact the professional who takes care of

maintenance of the appliance

No water circulation

L05 STB OUTLET

L06 BACK S.FAILURE

L07 BACK S.FAILURE

L08 BACK S.FAILURE

4 Vent the air in the heating system

4 Check the circulation (direction, pump,

valves)

4 Check the water pressure

PCU Boiler temperature too high Bad connection

Sensor fault

4 Contact the professional who takes care of

maintenance of the appliance

No water circulation

4 Vent the air in the heating system

4 Check the circulation (direction, pump,

valves)

4 Check the water pressure

PCU The return temperature sensor has

short-circuited

Bad connection
Sensor fault

4 Contact the professional who takes care of

maintenance of the appliance

PCU The return temperature sensor is on

an open circuit

Bad connection
Sensor fault

4 Contact the professional who takes care of

maintenance of the appliance

PCU Return temperature too low Bad connection

Sensor fault

28/08/12 - 300024828-001-01

4 Contact the professional who takes care of

maintenance of the appliance

No water circulation

4 Vent the air in the heating system

4 Check the circulation (direction, pump,

valves)

4 Check the water pressure

46

7. Troubleshooting MCA 45 - 65 - 90 - 115

Code Faults Cause

of the
fault

L09 STB BACK

L10 DEP-RET>MAX

L11 RET-DEP>MAX

PCU Return temperature too high Bad connection

PCU Difference between the flow and

PCU Difference between the flow and

Description Checking / solution

Sensor fault

4 Contact the professional who takes care of

maintenance of the appliance

No water circulation

4 Vent the air in the heating system

4 Check the circulation (direction, pump,

valves)

4 Check the water pressure

Bad connection

return temperatures insufficient

Sensor fault

4 Contact the professional who takes care of

maintenance of the appliance

No water circulation

4 Vent the air in the heating system

4 Check the circulation (direction, pump,

valves)

4 Check the water pressure

Bad connection

return temperatures too great

Sensor fault

L12 STB OPEN

L14 BURNER FAILURE

4 Contact the professional who takes care of

maintenance of the appliance

No water circulation

4 Vent the air in the heating system

4 Check the circulation (direction, pump,

valves)

4 Check the water pressure

PCU Maximum boiler temperature

exceeded (STB thermostat
maximum)

Bad connection
Sensor fault

4 Contact the professional who takes care of

maintenance of the appliance

No water circulation

4 Vent the air in the heating system

4 Check the circulation (direction, pump,

valves)

4 Check the water pressure

PCU 5 burner start-up failures No ignition

4 Contact the professional who takes care of

maintenance of the appliance

Ignition arc, but no flame formation

4 Check that the gas valve is fully opened

4 Contact the professional who takes care of

maintenance of the appliance

Presence of the flame but insufficient ionization
(<3 µA)

47

4 Check that the gas valve is fully opened

4 Contact the professional who takes care of

maintenance of the appliance

28/08/12 - 300024828-001-01

MCA 45 - 65 - 90 - 115 7. Troubleshooting

Code Faults Cause

of the
fault

L16 PARASIT FLAME

L17 VALVE FAIL

L34 FAN FAILURE

L35 BACK>BOIL FAIL

PCU Detection of a parasite flame Ionization current present when there should not

PCU Problem on the gas valve Bad connection

PCU The fan is not running at the right

PCU Flow and return reversed Bad connection

Description Checking / solution

be a flame
Ignition transformer defective
Gas valve defective
The burner remains very hot: CO2 too high

4 Contact the professional who takes care of

maintenance of the appliance

SU PCB faulty

4 Contact the professional who takes care of

maintenance of the appliance

Bad connection

speed

Fan defective

4 Contact the professional who takes care of

maintenance of the appliance

Sensor fault

4 Contact the professional who takes care of

maintenance of the appliance

Water circulation direction reversed

L36 I-CURRENT FAIL

L37

SU COM.FAIL

L38 PCU COM.FAIL

L39 BL OPEN FAIL

L40 TEST.HRU.FAIL

L250 DEF.WATER MIS.

4 Check the circulation (direction, pump,

valves)

PCU The flame went out more than 5

times in 24 hours while the burner
was operating

No ionization current

4 Check that the gas valve is fully opened

4 Contact the professional who takes care of

maintenance of the appliance

PCU Communication failure with the SU

PCB

Bad connection

4 Contact the professional who takes care of

maintenance of the appliance

PCU Communication failure between the

PCU and SCU PCBs

Bad connection
SCU PCB not connected or faulty

4 Contact the professional who takes care of

maintenance of the appliance

PCU The BL inlet opened for a short time Bad connection

External cause
Parameter incorrectly set

4 Contact the professional who takes care of

maintenance of the appliance

PCU HRU/URC unit test error Bad connection

External cause
Parameter incorrectly set

4 Contact the professional who takes care of

maintenance of the appliance

PCU The water pressure is too low Hydraulic circuit incorrectly vented

Water leak
Measurement error

L251

MANOMETRE FAIL

28/08/12 - 300024828-001-01

4 Top up with more water if necessary

4 Reset the boiler

PCU Fault on the water pressure sensor Wiring problem

The manometer is defective
Sensor pcb defective

4 Contact the professional who takes care of

maintenance of the appliance

48

7. Troubleshooting MCA 45 - 65 - 90 - 115

Code Faults Cause

of the
fault

D03

OUTL S.B FAIL.

D04

OUTL S.C FAIL.

D05 OUTSI.S.FAIL.

D07 SYST.SENS.FAIL.

D09 DHW S.FAILURE

D11

ROOM S.A FAIL.

D12

ROOM S.B FAIL.

D13

ROOM S.C FAIL.

D14 MC COM.FAIL

SCU Circuit B flow sensor fault

SCU Outside temperature sensor fault

SCU System sensor fault Bad connection

SCU Domestic hot water sensor fault

SCU A room temperature sensor fault

SCU Communication failure between the

Description Checking / solution

Bad connection

Circuit C flow sensor fault
Remarks:

The circuit pump is running.
The 3-way valve motor on the circuit

Sensor fault

4 Contact the professional who takes care of

maintenance of the appliance

is no longer powered and can be
adjusted manually.

Bad connection

Remarks:
The boiler operates on BOILER
MAX temperature.
The valve setting is no longer

Sensor fault

4 Contact the professional who takes care of

maintenance of the appliance

ensured but monitoring the
maximum temperature of the circuit
after the valve is ensured.
Valves may be manually operated.
Reheating the domestic hot water
remains ensured.

Sensor fault

4 Contact the professional who takes care of

maintenance of the appliance

Bad connection

Remarks:
Heating of domestic hot water is no
longer ensured.
The load pump operates.

Sensor fault

4 Contact the professional who takes care of

maintenance of the appliance

The load temperature of the dhw
tank is the same as the boiler.

Bad connection
B room temperature sensor fault
C room temperature sensor fault

Note:
The circuit concerned operates

Sensor fault

4 Contact the professional who takes care of

maintenance of the appliance

without any influence from the room
sensor.

Bad connection
SCU PCB and the boiler radio
module

4 Check the link and the connectors

Boiler module failure

D15 ST.TANK S.FAIL

D16

SWIM.P.B. S.FAIL

D16

SWIM.P.C. S.FAIL

D17 DHW 2 S.FAIL

D27 PCU COM. FAIL

49

4 Change the boiler module

SCU Storage tank sensor fault

Note:
The hot water storage tank reheating
operation is no longer assured.

SCU Swimming pool sensor fault circuit B

Swimming pool sensor fault circuit C
Note:

Pool reheating is independent of its
temperature.

Bad connection

Sensor fault

4 Contact the professional who takes care of

maintenance of the appliance

Bad connection

Sensor fault

4 Contact the professional who takes care of

maintenance of the appliance

SCU Sensor fault tank 2 Bad connection

Sensor fault

4 Contact the professional who takes care of

maintenance of the appliance

SCU Communication failure between the SCU and PCU PCBs

4 Contact the professional who takes care of maintenance of the appliance

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MCA 45 - 65 - 90 - 115 7. Troubleshooting

Code Faults Cause

of the
fault

D32 5 RESET:ON/OFF

D37

TA-S SHORT-CIR

D38 TA-S DISCONNEC

D99 DEF.BAD PCU

SCU 5 resets done in less than an hour

SCU The Titan Active System® is short-circuited

SCU The Titan Active System® is on an open circuit

SCU The SCU software version does not recognise the PCU connected

Description Checking / solution

4 Switch the boiler off and switch back on

4 If the boiler does not start after several resets (5 attempts possible), contact your

heating engineer and inform him of the error message displayed

4 Contact the professional who takes care of maintenance of the appliance

Remarks:
Domestic hot water production has stopped but can nonetheless be restarted using key
r.
The tank is no longer protected.
If a tank without Titan Active System® is connected to the boiler,check that the TAS
simulation connector (delivered with package AD212) is fitted to the sensor card.

4 Contact the professional who takes care of maintenance of the appliance

Remarks:
Domestic hot water production has stopped but can nonetheless be restarted using key
r.
The tank is no longer protected.
If a tank without Titan Active System® is connected to the boiler,check that the TAS
simulation connector (delivered with package AD212) is fitted to the sensor card.

4 Contact the professional who takes care of maintenance of the appliance

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50

8. Technical specifications MCA 45 - 65 - 90 - 115

8 Technical specifications

8.1 Technical specifications

Boiler type

General

Flow rate setting Adjustable

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

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

Data on the gases and combustion gases

Gas consumption G20 (Natural gas H) minimum-maximum

Gas consumption G31 (Propane) minimum-maximum

NOx-Emission per year (EN 483)

Mass flue gas flow rate minimum-maximum Kg/h 14 - 69 21 - 104 28 - 138 36 - 178

Flue gas temperature minimum-maximum °C 30 - 67 30 - 68 30 - 68 30 - 72

Maximum counter pressure

Characteristics of the heating circuit

Water content

Water operating pressure minimum kPa (bar) 80 (0,8) 80 (0,8) 80 (0,8) 80 (0,8)

Water operating pressure (PMS) maximum kPa (bar) 400 (4,0) 400 (4,0) 400 (4,0) 400 (4,0)

Water temperature maximum °C 110 110 110 110

Operating temperature maximum °C 90 90 90 90

Electrical characteristics

Power supply voltage

Power consumption - Full load maximum W 68 88 125 199

Power consumption - Part load maximum W 18 23 20 45

Power consumption - Standby maximum W 5 6 4 7

Electrical protection index

Other characteristics

Weight (empty) Total kg 53 60 67 68

Acoustic level at 1 metre

minimum-maximum kW 8,0 - 40,0 12,0 - 61,0 14,1 - 84,2 16,6 - 107,0

Factory setting kW 40,0 61,0 84,2 107,0

minimum-maximum kW 8,9 - 43,0 13,3 - 65,0 15,8 - 89,5 18,4 - 114,0

Factory setting kW 43,0 65,0 89,5 114,0

m3/h

m3/h

mg/kWh 37 32 45 46

Pa 150 100 160 220

l 5,5 6,5 7,5 7,5

V/Hz 230/50 230/50 230/50 230/50

IP X4D X4D X4D X4D

dBA 45 45 52 51

MCA 45 MCA 65 MCA 90 MCA 115

Modulating, Start/Stop, 0 - 10 V

0,9 - 4,4 1,3 - 6,6 1,5 - 9,1 1,8 - 11,7

0,3 - 1,7 0,5 - 2,5 0,6 - 3,5 0,6 - 4,7

51

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MCA 45 - 65 - 90 - 115

9 Energy savings

9.1 Energy-saving advice

9. Energy savings

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

4 Do not block ventilation outlets.

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

radiators.

4 Install reflective panels behind the radiators to prevent heat

losses.

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.

9.2 Recommendations

The remote control is available in the following versions:

4 Wire

4 Radio

The setting of the control panel and/or of the remote control has a
considerable influence on energy consumption.

A few tips:

4 In the room in which the room thermostat is installed, it's advised

not to use thermostatic valve radiators. If a thermostatic valve is
used the valve must be fully opened.

4 Completely closing and opening thermostatic valve radiators

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

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

and energy consumption.

4 Lower the temperature when you air the rooms.

4 When setting a time schedule , bear days when you are absent

and holidays in mind.

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52

10. Warranty

10 Warranty

10.1 General

10.2 Warranty terms

MCA 45 - 65 - 90 - 115

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.

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 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.

53

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.

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MCA 45 - 65 - 90 - 115 10. Warranty

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54

© Copyright

300024828- 001- 01

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

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.

28/08/12