DeDietrich TwineoEGC 25 User manual

Twineo EN
Gas fired floor-standing condensing boiler
EGC 25
User Guide
300026082-001-05

Contents
1 Safety instructions .....................................................................................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
2About this manual ......................................................................................8
2.1 Symbols used .......................................................8
2.1.1 Symbols used in the manual ...................................8
2.1.2 Symbols used on the equipment .............................8
2.2 Abbreviations ........................................................9
3Technical specifications ..........................................................................10
3.1 Certifications .......................................................10
3.2 Technical specifications ....................................10
4 Description ................................................................................................12
4.1 Operating principle .............................................12
4.1.1 Gas/air setting .......................................................12
4.1.2 Combustion ...........................................................12
4.2 Main parts ............................................................13
4.3 Control panel .......................................................14
4.3.1 Description of the keys ..........................................14
4.3.2 Description of the display ......................................14
5 Operating the appliance ..........................................................................17
5.1 Putting the appliance into operation ................17
5.2 Reading out measured values ...........................17
5.3 Changing the settings ........................................18
5.3.1 Parameter descriptions .........................................18
5.3.2 Modification of the user-level parameters .............19
5.3.3 Setting the manual mode ......................................21
5.3.4 Changing the heating temperature ........................21
5.3.5 Modifying the domestic hot water temperature
setting ....................................................................21
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5.3.6 Modifying the domestic hot water set point
temperature ...........................................................22
5.4 Installation shutdown .........................................22
5.5 Antifreeze protection ..........................................22
6 Checking and maintenance .....................................................................23
6.1 General instructions ...........................................23
6.2 Periodic checks ..................................................23
7 Troubleshooting .......................................................................................25
7.1 Error messages (Sub-status 9) ........................25
7.2 Faults (type code Exx) ........................................27
8 Energy savings .........................................................................................31
8.1 Energy-saving advice .........................................31
8.2 Recommendations ..............................................31
9 Warranty ....................................................................................................32
9.1 General ................................................................32
9.2 Warranty terms ...................................................32
10 Appendix – Information on the Ecodesign and Energy Labelling
Directives ..................................................................................................33
Contents
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1 Safety instructions
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.
EGC 25 1. Safety instructions
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WARNING
Depending on the settings of the appliance:
4The temperature of the flue gas conduits
may exceed 60°C.
4The temperature of the radiators may reach
85°C.
4The temperature of the domestic hot water
may reach 65°C.
CAUTION
Do not neglect to service the appliance:
4For 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.
4Regularly check the water pressure in the installation
(minimum pressure 0.8 bar, recommended pressure
between 0.8 and 1.5 bar).
4Keep the appliance accessible at all times.
4Never 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.
4The 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 instructions EGC 25
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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:
4Failure to abide by the instructions on using the
appliance.
4Faulty or insufficient maintenance of the appliance.
4Failure 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:
4Read and follow the instructions given in the manuals
provided with the appliance.
4Carry out installation in compliance with the prevailing
legislation and standards.
4Perform the initial start up and carry out any checks
necessary.
4Explain the installation to the user.
4If a maintenance is necessary, warn the user of the
obligation to check the appliance and maintain it in
good working order.
4Give all the instruction manuals to the user.
EGC 25 1. Safety instructions
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1.3.3. User’s liability
To guarantee optimum operation of the appliance, the
user must respect the following instructions:
4Read and follow the instructions given in the manuals
provided with the appliance.
4Call on qualified professionals to carry out installation
and initial start up.
4Get your installer to explain your installation to you.
4Ensure the Appliance is serviced in accordance with
the manufacturer’s instructions by a suitable qualified
person.
4Keep the instruction manuals in good condition close
to the appliance.
1. Safety instructions EGC 25
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2 About this manual
2.1 Symbols used
2.1.1. Symbols used in the manual
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.
2.1.2. Symbols used on the equipment
4Protective earthing
~Alternating current
Before installing and commissioning the device, read
carefully the instruction manuals provided.
Dispose of the used products in an appropriate recovery
and recycling structure.
This appliance must be connected to the protective earth.
D000241-C
EGC 25 2. About this manual
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Caution: danger, live parts.
Disconnect the mains power prior to any operations.
2.2 Abbreviations
43CE: Collective conduit for sealed boiler
4DHW: Domestic hot water
4Hi: Lower heating value LHV (Nett)
4Hs: Higher heating value HHV (Gross)
4PPS: Polypropylene hardly inflammable
4PCU: Primary Control Unit - PCB for managing burner operation
4PSU: Parameter Storage Unit - Parameter storage for PCBs
PCU and SU
4SCU: Secondary Control Unit - control panel PCB
4SU: Safety Unit - Safety PCB
4HRU: Heat Recovery Unit
43WV: 3-way valve
4HL: High Load - DHW tank with plate exchanger
4SL: Standard Load - DHW tank with coil
4SHL: Solar High Load - Solar DHW tank with plate exchanger
4SSL: Solar Standard Load - Solar DHW tank with coil
1 2
M002628-A
2. About this manual EGC 25
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3 Technical specifications
3.1 Certifications
CE identification no CE-0085CM0178
NOx classification 5 (EN 297 pr A3, EN 483)
Type of connection Chimney: B23, B33
Flue gas outlet: C13(x), C33(x), C43(x), C53, C83(x),
C93(x)
3.2 Technical specifications
Boiler type EGC 25
General
Nominal output (Pn)
Heating System (80/60 °C)
minimum-maximum kW 5,0 - 24,1
Nominal output (Pn)
Heating System (50/30 °C)
minimum-maximum kW 5,6 - 25,5
Nominal output (Pn)
Heating System (40/30 °C)
minimum-maximum kW 5,6 - 25,9
Nominal input (Qn)
Heating System (Hi)
minimum-maximum kW 5,2 - 25,0
Nominal input (Qn)
Heating System (Hs)
minimum-maximum kW 5,8 - 27,8
Nominal input (Qnw)
DHW System (Hi)
minimum-maximum kW 5,2 - 29,3
Nominal input (Qnw)
DHW System (Hs)
minimum-maximum kW 5,8 - 32,6
Heating efficiency under full load (Hi) (80/60 °C) - % 96,3
Heating efficiency under full load (Hi) (50/30 °C) - % 102,0
Heating efficiency under partial load (Hi) (Return temperature 60°C) - % 96,1
Heating efficiency under partial load (EN 92/42) (Return temperature
30°C)
- % 108,0
Data on the gases and combustion gases
Gas consumption - Natural gas H (G20) minimum-maximum m3/h 0,55 - 3,10
Gas consumption - Natural gas L (G25) minimum-maximum m3/h 0,64 - 3,61
Gas consumption - Propane G31 minimum-maximum m3/h 0,21 - 1,20
Mass flue gas flow rate minimum-maximum kg/h 8,9 - 49,3
Flue gas temperature minimum-maximum °C 30 - 80
Maximum counter pressure Pa 120
Characteristics of the heating circuit
Water content (ex expansion vessel) l 1,9
Water operating pressure minimum kPa (bar (MPa)) 80 (0,8)
Water operating pressure (PMS) maximum kPa (bar (MPa)) 300 (3,0)
Water temperature maximum °C 110
EGC 25 3. Technical specifications
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Boiler type EGC 25
Operating temperature maximum °C 90
Electrical characteristics
Power supply voltage VAC 230
Power consumption - Pump position high - Fastest maximum W 141
Power consumption - Pump position low - Slowest maximum W 78
Electrical protection index IP21
Other characteristics
Weight (empty) kg 50
3. Technical specifications EGC 25
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4 Description
4.1 Operating principle
4.1.1. Gas/air setting
Air is sucked in by the fan and the gas injected into the venturi
attached to the fan inlet. The fan rotation speed modulates and adapts
to thermal energy requirements thanks to the temperatures measured
by the various sensors. The gas and air are mixed in the venturi, which
enables operation at a constant ratio. The noise of the venturi is
absorbed by a silencer attached to its inlet. The gas/air mixture is
carried to the burner in the top of the exchanger, guided by the pre-
mix channel.
4.1.2. 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 condensate trap.
EGC 25 4. Description
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4.2 Main parts
1Flue gas discharge pipe
2Flue gas measuring point
3Heat exchanger
4Ignition/ionization electrode
5Box for the control PCBs
6Control panel
7Command module
8Water pressure sensor
9Circulation pump
10 Hydroblock
11 3-way valve
12 Safety valve
13 Casing
14 Expansion vessel
15 Combined venturi and gas valve unit
16 Fan
17 Air intake silencer
18 Mixer pipe
19 Automatic air vent
C003072-C
18
19
16
17
15
14
13
12
11
1234
10
9
5
6
7
8
4. Description EGC 25
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4.3 Control panel
4.3.1. Description of the keys
AReturn button j, Escape G or Manual reset t
BHeating temperature button d or [-]
CDHW temperature button r or [+]
DS [Enter] Key
E) [Chimney-sweeping] keys
Press keys A and B simultaneously
Ff [Menu] keys
Press keys C and D simultaneously
4.3.2. Description of the display
nKey functions
GBack to the previous level without saving the
modifications made
tManual reset
dCentral heating function:
Access to the max. heating temperature parameter.
[-] To reduce a value
-
)
L
m
r
r
r
d
d
d
T
y
1
2
SERVICE
°C°Fh
barPsi
% rpm
kW uA
x10 l/min
°CSt:
M002715-A
t
h
j
A B
E F
C D
-
)
L
m
r
r
r
d
d
d
T
y
1
2
SERVICE
°C°Fh
barPsi
% rpm
kW uA
x10 l/min
°CSt:
M002716-A
t
h
j
EGC 25 4. Description
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rDHW function:
Access to sanitary hot water temperature parameter.
[+] To increase a value
®Access the selected menu or confirm a value modification
nOperating modes
dState heating pump
DHeating programme deactivated:
The heating function is deactivated
rState DHW pump
SDHW off
mManual mode
nFlame output level
eLow output level 0 - 25 %
rAverage output level 25 - 50 %
tHigh output level 50 - 75 %
yOutput level 75 - 100 %
nSystem pressure
bar Pressure indicator:
The symbol is displayed next to the installation’s pressure
value. If no water pressure sensor is connected, -.-
appears on the display
-
)
L
m
r
r
r
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
r
r
r
d
d
d
T
y
1
2
SERVICE
°C°Fh
barPsi
% rpm
kW uA
x10 l/min
°CSt:
M002718-A
t
h
j
-
)
L
m
r
r
r
d
d
d
T
y
1
2
SERVICE
°C°Fh
barPsi
% rpm
kW uA
x10 l/min
°CSt:
M002719-A
t
h
j
-
)
L
m
r
r
r
d
d
d
T
y
1
2
SERVICE
°C°Fh
barPsi
% rpm
kW uA
x10 l/min
°CSt:
M002720-A
t
h
j
4. Description EGC 25
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nOther information
"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
KDisplay with the symbols:
$ + K + Z (Maintenance message)
\Hour counter menu:
Readout of the operating hours, number of successful
starts and hours on mains supply
aBlocking:
After 5 resets in under 1 hour, the appliance should be
switched off and switched on again before resetting
IOutside temperature sensor present
MThe symbol is displayed when the boiler pump is
operating
aDefect:
Boiler indicates a fault. This is indicated by an E code
and a flashing display
-
)
L
m
r
r
r
d
d
d
T
y
1
2
SERVICE
°C°Fh
barPsi
% rpm
kW uA
x10 l/min
°CSt:
M002721-A
t
h
j
EGC 25 4. Description
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5 Operating the appliance
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).
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: Software version
pK[xx: Parameter version
The version numbers are displayed alternately.
5. A vent cycle of a duration of around 3 minutes is carried out
automatically.
6. In standby mode, the screen usually displays 0, plus the water
pressure and the symbols d and r.
5.2 Reading out measured values
The following current values can be read off the information menu
Q:
45t = State.
45v = Sub-status.
4t1 = Flow temperature (°C).
4t" = Return temperature (°C).
4t3 = DHW tank temperature (°C).
4t4 = Outside temperature (°C).
4t5 = Solar boiler temperature (°C).
4t6 = Solar panel temperature (°C).
45p = Internal set point (°C).
4fl = Ionization current (µA).
4Mf = Fan speed in rpm.
4pr = Water pressure (bar (MPa)).
4p; = Supplied relative heat output (%).
5. Operating the appliance EGC 25
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The current values can be read as follows:
1. Press the two f keys simultaneously. The symbol Q flashes.
2. Confirm using key S. 5t is displayed, alternating with the
current status 3 (for example).
3. Press the [+] key. 5v is displayed, alternating with the current
sub-status 30 (for example).
4. Press the [+] key. t1 is displayed, alternating with the current
flow temperature 60°C (for example).
5. Press the [+] key successively to scroll down the various
parameters. t", t3, t4, t5, t6.
6. Press the [+] key. 5p is displayed, alternating with the internal
set point 88°C (for example).
7. Press the [+] key. fl is displayed, alternating with the current
ionization current 70 µA (for example).
8. Press the [+] key. Mf is displayed, alternating with the current
fan rotation speed 3000 rpm (for example).
9. Press the [+] key. pr is displayed, alternating with the current
water pressure #0 bar (for example). If no water pressure sensor
is connected, [-.-] appears on the display.
10.Press the [+] key. p; is displayed, alternating with the current
modulation percentage 78 % (for example).
11.Press the [+] key. The readout cycle starts again with 5t.
12.Press the j key 2 times to return to the current operating mode.
5.3 Changing the settings
5.3.1. Parameter descriptions
)
r
d
bar
C003049-A
t
h
j
h
j
4x
2x
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Parameter Description Adjustment range
Factory
setting
EGC 25
p1 Flow temperature: TSET 20 to 90 °C 80
p2 Domestic hot water
temperature: TSET
40 to 65 °C 55
p3 Heating / DHW mode
0 = Heating deactivated / DHW deactivated
1 = Heating activated / DHW activated
2 = Heating activated / DHW deactivated
3 = Heating deactivated / DHW activated
1
p4 ECO mode
0 = Comfort
1 = Energy-saving mode
2 = Management using a programmable thermostat
2
p5 Anticipation resistance 0 = No anticipation resistance for the ON/OFF thermostat
1 = Anticipation resistance for the ON/OFF thermostat 0
p6 Display screen
0 = Simple
1 = Comprehensive
2 = Automatic switching to simple after 3 minutes
3 = Automatic switching to simple after 3 minutes; Key blocking is
active
2
p7 Post-circulation of the pump 1 to 98 minutes
99 minutes = continuous 2
p8 Brightness of display
lighting
0 = Low
1 = High 1
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.
5. Operating the appliance EGC 25
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