DeDietrich DTG 230 S User manual

DTG 230 S
Gas-fired boilers
User Guide
300011506-02
en

2DTG 230 09/03/2016 - 300011506-02
.
Contents
1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
1.1 Symbols used . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
1.2 General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
1.2.1 Manufacturer's liability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
1.2.2 Installer's liability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
1.2.3 User's liability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
2 Safety instructions and recommendations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
2.1 Safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
2.2 Recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
3 Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
3.1 Main parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
3.2 Control panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
3.2.1 B3 control panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
3.2.2 DIEMATIC-m3 control panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
3.2.3 K3 control panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
4 Operating the appliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
4.1 Commissioning the boiler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
4.2 Changing the settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
4.2.1 B3 control panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
4.2.2 DIEMATIC-m3 control panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
4.2.3 K3 control panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
4.3 Switching off the boiler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
4.3.1 Precautions to take if there is a danger of frost . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
4.3.2 Precautions to take in the event of prolonged shutdown (one year or more). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
4.1 Commissioning the boiler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
5 Checking and maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
6 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
6.1 Type plate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
6.2 Error messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
6.2.1 B3 control panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
6.2.2 DIEMATIC-m3 control panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
6.2.3 K3 control panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
6.3 Incidents and solutions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
7 Technical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
8 Energy savings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

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1. Introduction
1Introduction
1.1 Symbols used
Caution danger
Risk of injury and damage to equipment. Attention must be
paid to the warnings on safety of persons and equipment.
Specific information
Information must be kept in mind to maintain comfort.
ZReference
Refer to another manual or other pages in this instruction
manual.
DHW: Domestic hot water
1.2 General
Congratulations on your choice of a high quality product. We
strongly advise you to read the following instructions in order to
guarantee the optimal operation of your appliance. We are sure
that it will be entirely to your satisfaction and will meet with all
of your expectations.
`Keep these instructions in a safe place close to the appliance.
`In the interest of customers, De Dietrich Thermique SAS are
continuously endeavouring to make improvements in product quality.
All the specifications stated in this document are therefore subject to
change without notice.
1.2.1 Manufacturer's liability
`The liability of De Dietrich Thermique SAS as the manufacturer may not
be invoked in the following cases:
- Failure to abide by the instructions on using the appliance,
- Faulty or insufficient maintenance of the appliance,
- Failure to abide by the instructions on installing the appliance
1.2.2 Installer's liability
The installer is responsible for the installation and commissioning of
the appliance. The installer must respect the following instructions:
`Read and follow the instructions given in the manuals provided
with the appliance,
`Carry out installation in compliance with the prevailing
legislation and standards,
`Perform the initial start up and carry out any checks necessary
When handing over the installation to the user, the installer will draw
the user's particular attention to the following points:
- The safety of the installation,
- The functioning of the installation and the boiler,
- Periodic maintenance to be done.
1.2.3 User's liability
To ensure the optimum operation of your appliance, we strongly
recommend that you abide by the following instructions :
`Read and follow the instructions given in the manuals provided
with the appliance.
`Call on qualified professionals to:
- Carry out installation in compliance with the prevailing legislation
and standards
- Perform the initial start up
- Carry out work on the appliance and the installation
- Ensure the Appliance is serviced in accordance with the
manufacturer's instructions by a suitable qualified person
- Get your installer to explain your installation to you.

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2. Safety instructions and recommendations
2 Safety instructions and recommendations
2.1 Safety instructions
Fire hazard
Do not stock products of an inflammable nature close to
the appliance.
If you smell gas, do not use a naked flame, do not smoke,
do not operate electrical contacts or switches (doorbell,
lights, motor, lift, etc.).
1.Shut off the gas supply
2.Open the windows
3.Extinguish all flames
4.Evacuate the premises
5.Contact a qualified professional
6.Inform the gas supplier
Risk of intoxication
Do not obstruct the air inlets in the room (even partially).
If you smell flue gases
1.Switch the appliance off
2.Open the windows
3.Evacuate the premises
4.Contact a qualified professional
Risk of being burnt
Avoid direct contact with the flame viewport.
Depending on the settings of the appliance:
- The temperature of the flue gas conduits may exceed 60°C
- The temperature of the radiators may reach 95°C
- The temperature of the domestic hot water may reach 65°C
Risk of damage
Do not stock chloride or fluoride compounds close to the
appliance.
Install the appliance in frost-free premises.
Do not neglect to service the appliance: Contact a qualified
professional or take out a maintenance contract for the annual
servicing of the appliance.
2.2 Recommendations
Only qualified professionals are authorised to work on the
appliance and the installation.
Before any work, switch off the mains supply to the
appliance.
Check regularly that the installation contains water and is
pressurised.
Keep the appliance accessible at all times.
Avoid draining the installation.
The appliance should be on Summer or Antrifreeze mode rather than
switched off to guarantee the following functions:
- Antifreeze protection
- Protection against corrosion on domestic hot water tanks fitted
with a titanium anode

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3. Description
3 Description
3.1 Main parts
7 to 13 sections 14 sections
1. Control panel
2. Factory fitted bridge
Connection for gas pressure switch (Option - Package GC191)
Natural gas: 12.5 mbar
Propane: 20 mbar
3. a:Gas valve - Stage 1
b:Gas valve - Stage 2
4. a:Flame inspection window - Stage 1
b:Flame inspection window - Stage 2
5. a: Ignition electrode
b: Ionization probe
6. Safety box
7. Valve connector - Stage 2
8. Safety control box and valve connector - Stage 1
9. Downdraught thermostat
7-9 sections: delivered with the boiler
10-14 sections: Option (Package GC22) - Factory fitted bridge
Russia: The downdraught thermostat is compusory for all
models of boiler and must be fitted systematically. The
downdraught thermostat is delivered with the
documentation package.
10. Not used (Factory fitted bridge)
11. Factory fitted bridge
- Connection for cyclical tightness controller (Option - Package
CY41)
or
- Connection for safety valve (Option - Package GC191)
8502N169A
1
27 8 9 10 11
3b
4b
5a 5b
4a
3a
6

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3. Description
3.2 Control panel
3.2.1 B3 control panel
1. General ON (1) / OFF (0) switch
2. Burner alarm indicator + Reset button
This light comes on when the safety control box is in safety
lockout (out of order).
3. Switch TEST-STB/./%
.: Heating and domestic hot water are in operation
%: Only domestic hot water is in operation
Position TEST-STB: Temporary action to test the safety
thermostat
4. Safety thermostat with manual reset
Set to 110° C
5. Timed circuit breaker (4 A)
6. Pump shutdown switch
7. Electronic thermostat (30 to 90 °C)
8. Heating on light
9. Location for flue gas thermometer (optional)
10. Switch for selecting the number of burner stages
(2-stage boilers)
11. Digital display
-Light 8 lit: Boiler temperature display
-Light
13 lit: Domestic hot water display
When preparing domestic hot water
12. Electronic thermostat (10 to 80 °C)
13. Domestic hot water on light
14. Location for hour run meter (Option)

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3. Description
3.2.2 DIEMATIC-m3 control panel
Electromechanical components
1. General ON (1) / OFF (0) switch
2. Burner alarm indicator + Reset button
This light comes on when the safety control box is in safety
lockout (out of order).
3. Switch AUTO/!/TEST-STB
AUTO: Automatic control
!: Manual control
TEST-STB: Temporary action to test the safety thermostat
4. Safety thermostat with manual reset
Set to 110° C
5. Timed circuit breaker (4 A)
6. Pump shutdown switch
7. Boiler thermostat (30 to 90 °C)
8. Boiler thermometer
9. Switch for selecting the number of burner stages
(2-stage boilers)
10. Connector USB
14. Boiler heat curve
15. Flap
16. Display
Display
024681012141618202224
A
3 4 5 6
91011
8
2
1
BC
7
SUNDAY
1Text and numerical display
2Graphic display bar for the programme in circuit A, B or C
3Light area: Reduced temperature heating period or tank load
disabled
4Dark area: Comfort temperature heating period or tank load
enabled
5Flashing cursor showing the current time
6Number display (current time, adjusted values, parameters,
etc.)
7Number of the boiler for which the parameters are displayed
8The arrows flash when setting values can be modified using
the +and -keys
9Circuit operation symbols
>Opening the 3-way valve
=Closing the 3-way valve
:Displayed circuit pump on
A B C Name of the circuit displayed
10
Arrows indicating the chosen time programme (P1, P2, P3 or
P4) for the circuit displayed, A, B, C, or the activation of the
manual summer mode
11 Symbols indicating that the following inputs/outputs are
active
DHW load pump on
#Summer mode (Automatic / Manual)
DBurner on
`Operation with modulating burner
Not used
`Operation with 2-stage burner
DBurner on with 1 stage
YBurner on with 2 stages

8DTG 230 09/03/2016 - 300011506-02
3. Description
3.2.3 K3 control panel
1. General ON (1) / OFF (0) switch
2. Burner alarm indicator + Reset button
This light comes on when the safety control box is in safety
lockout (out of order).
3. Switch AUTO/!/TEST-STB
AUTO: This position enables automatic operation of the
installation in accordance with DIEMATIC-m 3 regulation
controls.
!: The boiler no longer takes orders from the DIEMATIC-m 3
regulation into account. The boiler is regulated by the boiler
thermostat(s).
TEST-STB: Temporary action to test the safety thermostat
4 Operating the appliance
4.1 Commissioning the boiler
Initial commissioning must be done by a qualified
professional.
1. Check the water pressure in the installation. Top up with more
water if necessary.
2. Open the gas valve.
3. Make the settings on the control panel:
`B3 control panel:
- Turn the switch TEST-STB/./% to
.
.
- Turn the pump shutdown switch to
9
- Set the boiler thermostat to the desired setting.
- When preparing domestic hot water: Set the DHW thermostat to
the desired setting. Setting 6 (approx 60) recommended.
`DIEMATIC-m3 control panel:
- Turn the AUTO /
!
/ TEST STB switch to AUTO .
- Turn the pump shutdown switch to
9
- Set the boiler thermostat to maximum (between 7½ and 9).
`K3 control panel (Secondary boiler in cascade with a
DIEMATIC-m3 boiler):
-Setswitch AUTO /
!
/ TEST STB to the AUTO position.
4. Turn the burner switch to 2(2 stage version)
5. Check that the safety thermostat has not triggered. Remove the
safety thermostat hood and press the reset button with a
screwdriver.
6. Set the On/Off switch to 1.
Only for DIEMATIC-m3 control panel:
When the boiler is switched on, the tank exchanger is purged
for one minute if a tank is connected and its temperature is
lower than 25°C.
If disgassing has already taken place, press the MODE key to
suspend disgassing.
Only for DIEMATIC-m3 control panel:
On commissioning, it is necessary to select the desired
language with the + and - keys and confirm with the MODE key.
4.2 Changing the settings
4.2.1 B3 control panel
Heating temperature setting: Set the boiler thermostat to the
desired setting.
Setting the domestic hot water temperature: Set the DHW
thermostat to the desired setting.

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3. Description
4.2.2 DIEMATIC-m3 control panel
Keys accessible when the flap is closed Keys accessible when the flap is open
4.2.3 K3 control panel
Heating temperature setting: Set the boiler thermostat to the
desired setting.
Make all other settings on the master boiler fitted with a DIEMATIC-
m3 control panel
Press the *key.
Adjustment keys
MODE Various operating modes can be selected by successively
pressing key MODE:
`AUTOMATIQUE
`DAY 7/7: Forced operation at permanent Day temperature
`DAY (Until midnight): Forced operation at temporary Day
temperature
`NIGHT 7/7: Forced operation at permanent Night
temperature
`NIGHT (Until midnight): Forced operation at temporary
Night temperature
`DAYS ANTIFREEZ: Antifreeze mode for the number of
days set
`HOLIDAY7/7: Permanent antifreeze mode
Restart key for a DHW calorifier load
`AUTOMATIQUE
`DHW: Restarts DHW load until midnight
`DHW 7/7: DHW load is forced permanently
After a few seconds, the display disappears but the mode is
activated.
+Display key for the various counters (number of burner start-ups,
number of burner operating hours, etc.)
2% Set temperatures Day (Heating / DHW / Pool)
2$ Set temperatures Night (Heating / DHW)
*Access key to the secondary boilers (Control panel K3) in a
cascade
If using only one boiler, this key is inactive.
(Setting the gradients for circuits A, B and C
)
Setting the parallel offsets DECAL.// DEP.A, DECAL.// DEP.B or
DECAL.// DEP.C for the heating curves on circuits A, B or C.
If the Day setting for one of the circuits, A, B or C, is above 30°C,
you no longer have access parallel offset on this circuit.
+/- Adjustment keys
Adjustment keys
%O Enter (per 1/2 hour) the comfort temperature period or
tank load enabled (dark area).
$P Enter (per 1/2 hour) the reduced temperature period or
tank load disabled (light area).
STANDARD
Simultaneously pressing the 2 keys, %O and
$P, resets all of the time programmes.
SReturn key
JPage scrolling
ILine scrolling
*Scroll of boilers connected
#Manual "Summer" shutdown key. The heating is
switched off and DHW production is ensured.
KFitter settings access key
MDO NOT USE

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3. Description
4.3 Switching off the boiler
Set the On/Off switch to 0.
DIEMATIC-m3 control panel
The panel must always be supplied with 230V voltage:
- to ensure the anti-grip of the heating pump,
- to ensure Titan Active System® operation when a titanium anode
is protecting the DHW tank.
Use the mode:
- summer to shut down the heating.
- antifreeze to shut down the boiler if you are to be absent.
4.3.1 Precautions to take if there is a danger of frost
Heating circuit:
Use a correctly dosed antifreeze to prevent the heating water
freezing. If this cannot be done, drain the system completely. In all
cases, consult the fitter.
Domestic hot water circuit:
Drain the domestic water tank and pipes.
4.3.2 Precautions to take in the event of prolonged shutdown (one year or more)
- Close the gas valve
- The boiler and the chimney must be swept carefully.
- Close the door of the boiler to prevent the internal circulation of air.
5 Checking and maintenance
Make the following checks at least 1 time a year:
- Checking the ignition burner
- Safety devices
- Water level
- Checking burner safety
- Checking the safety thermostat
- Checking the downdraught thermostat
Carry out the following maintenance at least 1 time a year:
- Cleaning main burner and ignition burner
- Cleaning of the heating body
- Cleaning painted surfaces