DeDietrich GT 430 Manual

GT 430
Fuel oil/gas boilers
300011893-001-02
EN
Installation and
Service Manual

2GT 430 05/03/2013 - 300011893-001-02
Declaration of conformity CE
The appliance complies with the standard model described in
declaration of compliance 1. It is manufactured and distributed
pursuant to the requirements of european directives.
The original of the declaration of compliance is available from the
manufacturer.
C002721-A

3
05/03/2013 - 300011893-001-02 GT 430
Contents
1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
1.1 Symbols and abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
1.2 General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
1.2.1 Manufacturer's liability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
1.2.2 Installer's liability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
1.3 User's liability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
1.4 Homologations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
1.4.1 Certifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
1.4.2 Directive 97/23/EC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
2 Safety instructions and recommendations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
2.1 Safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
2.1.1 Fire hazard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
2.1.2 Risk of intoxication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
2.1.3 Risk of being burnt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
2.1.4 Risk of damage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
2.2 Recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
3 Technical description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
3.1 General description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
3.2 Composition of the range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
3.2.1 - S3 Standard control panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
3.2.2 K3 control panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
3.2.3 DIEMATIC-m3 control panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
3.2.4 B3 control panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
3.3 Technical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
3.3.1 Boilers for following countries: France, Belgium, Spain, Estonia, Luxemburg, Poland, Portugal, Czech Republic . . . . . . . . . . . . . . . . . 10
3.3.2 Boilers for following countries: Germany, Austria, Serbia, Slovenia . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
3.3.3 Boilers for following countries: Switzerland . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
3.3.4 Boilers for following countries: Russia . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
3.3.5 Boilers for following countries: Algeria, Bulgaria, China, Cyprus, Denmark, Finland, Greece, Morocco, Norway, Romania, Sweden, Tunisia
14
4 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
4.1 Regulations governing installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
4.1.1 In particular for France . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
4.1.2 In particular for Germany . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
4.2 Package list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
4.3 Choice of the location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
4.3.1 Main dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
4.3.2 Position of the boiler. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
4.3.3 Ventilation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
4.4 Example of an installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
4.5 Hydraulic connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
4.5.1 Flushing the system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
4.5.2 Sludge removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
4.5.3 Hydraulic connection of the heating circuit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
4.5.4 Safety valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
4.5.5 Connection of the water circuit for domestic use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
4.6 Chimney connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
4.6.1 Flue size. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
4.6.2 Connection to the flue gas pipe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
4.7 Fuel-oil or gas connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
4.8 Electrical connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
4.9 Filling the system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

4GT 430 05/03/2013 - 300011893-001-02
5 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
6 Switching off the boiler. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
6.1 Precautions required in the case of long boiler stops. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
6.2 Precautions required if the heating is stopped when there is a risk of freezing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
7 Checking and maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
7.1 System maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
7.1.1 Water level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
7.1.2 Draining . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
7.2 Data plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
7.3 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
7.3.1 Cleaning the flue gas circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
7.3.2 Cleaning the combustion chamber. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
7.3.3 Positioning of the baffle plates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
7.3.4 Cleaning the flue gas box. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
7.3.5 Chemical sweeping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
7.4 Cleaning the casing material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
7.5 Maintenance of the burner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
8 Spare parts - GT 430 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32

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1Introduction
1.1 Symbols and abbreviations
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
1.2.1 Manufacturer's liability
Our products are manufactured in compliance with the requirements
of the various applicable European Directives. They are therefore
delivered with 1marking 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
:
`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 inital start up 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.
`Explain the installation to the user.
`If a maintenance is necessary, warn the user of the obligation
to check the appliance and maintain it in good working order.
`Give all the instruction manuals to the user.

6GT 430 05/03/2013 - 300011893-001-02
1.3 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 and initial
start up.
`Get your installer to explain your installation to you.
`Have the required checks and services done.
`Keep the instruction manuals in good condition close to the
appliance.
This appliance is not intended to be used by persons (including
children) whose physcial, sensory or mental capacity is impaired or
persons with no experience or knowledge, unless they have the
benefit, through the intermediary of a person responsible for their
safety, of supervision or prior instructions regarding use of the
appliance. Care should be taken to ensure that children do not play
with the appliance.
1.4 Homologations
1.4.1 Certifications
CE identification no: 1312 AQ 951 (Base):
France, Germany, Austria, Belgium, Spain, Italy, Luxemburg,
Poland, Portugal, Czech Republic, Slovenia, Switzerland.
CE identification no: 1312 AQ 952 (Export):
Algeria, Bulgaria, China, Finland, Greece, Ireland, Jordan, Lebanon,
Morocco, Norway, Romania, Russia, Syria, Tunisia, Turkey.
1.4.2 Directive 97/23/EC
Gas and oil boilers with a maximum operating temperature of 110°C
and hot water tanks with a maximum operating pressure of 10 bar
pertain to article 3.3 of the directive, and therefore, cannot be CE-
marked to certify compliance with the directive 97/23 EC.
The boilers and hot water tanks are designed and manufactured in
accordance with the sound engineering practice, as requested in
article 3.3 of the directive 97/23/EC, it is certified by compliance with
the directives 90/396/EC, 92/42/EC, 2006/95/EC and 2004/108/EC.

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2 Safety instructions and recommendations
2.1 Safety instructions
For a proper operating of the boiler, follow carefully the
instructions.
Only qualified professionals are authorised to work on the
appliance and the installation.
Incorrect use or unauthorised modifications to the
installation or the equipment itself invalidate any right to
claim.
Before any work, switch off the mains supply to the
appliance.
Keep to the polarity shown on the terminals: phase (L),
neutral (N) and earth 4.
Keep children away from the boiler.
2.1.1 Fire hazard
It is forbidden to store inflammable products and materials
in the boiler room or close to the boiler, even temporarily.
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.
2.1.2 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.
2.1.3 Risk of being burnt
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.
2.1.4 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
`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:
- Anti blocking of pumps .
- Antifreeze protection .
- Protection against corrosion on domestic hot water tanks fitted
with a titanium anode .

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3 Technical description
3.1 General description
The boilers of the GT 430 range are pressurised hot water boilers
designed for connecting to a flue pipe which require a separate
automatic fuel-oil or gas burner. GT 430 boilers have the following
characteristics:
- Heating body in cast iron.
-S3, B3, K3 or DIEMATIC-m3 control panel.
- Production of domestic hot water can be ensured by a separate hot
water calorifier.
3.2 Composition of the range
3.2.1 - S3 Standard control panel
Standard panel to be fitted
Panel comprising the settings, control and safety devices allowing
the boiler to operate autonomously, without regulation.
The standard panel is used to connect the boiler to the boiler room
control cabinet.
This cabinet can be fitted with control units.
3.2.2 K3 control panel
Separate panel
Panel comprising the settings, control and safety devices allowing
the boiler to operate autonomously.
Control panel K3 also allows the boiler to be used as a secondary
boiler for installations with 2 to 10 boilers in cascade, one of which is
fitted with a "DIEMATIC-m3" control panel.
Side panel
A version of the K3 control panel with lateral attachment is also
available.

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3.2.3 DIEMATIC-m3 control panel
Separate panel
Top of the range electronic control panel with digital display,
comprising the settings, control and safety devices allowing the boiler
to operate autonomously.
The DIEMATIC-m3 panel is fitted as standard with a control unit
which operates according to the outside temperature.
The DIEMATIC-m3 panel also allows the boiler to be used as a
master boiler for installations with 2 to 10 boilers in cascade.
The other boilers (1 to 9) must be fitted with a "K3" control panel.
Side panel
A version of the DIEMATIC-m3 control panel with lateral
attachment is also available.
3.2.4 B3 control panel
Separate panel
Top of the range electronic control panel with digital display,
comprising the settings, control and safety devices allowing the boiler
to operate autonomously.
This panel makes it possible to give priority to DHW.
Side panel
A version of the B3 control panel with lateral attachment is also
available.

10 GT 430 05/03/2013 - 300011893-001-02
3.3 Technical specifications
3.3.1 Boilers for following countries: France, Belgium, Spain, Estonia, Luxemburg, Poland, Portugal, Czech
Republic
In order for the boiler to operate correctly, it is imperative
to respect the draught at the nozzle. 1 mbar = 10 mmWG = 10 daPa
Conditions of use:Test conditions:
Maximum operating temperature: 100 °C CO²Fuel oil = 13%
Maximum operating pressure: 6 bar CO²Natural gas = 9.5%
Thermostat adjustable from 30 to 90°C Ambient temperature: 20 °C
Safety thermostat: 110 °C
Boiler GT 430-8 GT 430-9 GT 430-10 GT 430-11 GT 430-12 GT 430-13 GT 430-14
Useful output kW 250-310 310-370 370-430 430-495 495-570 570-645 645-700
Power input kW 269-337 333-401 400-469 463-537 534-619 615-703 697-763
Number of sections 8 9 10 11 12 13 14
Water content l 366 409 452 495 538 581 624
Water resistance ∆T = 10K mbar 19 32 51 69 94 126 156
∆T=15K 9 152331425670
∆T = 20K 5 8 13 17 24 32 39
Pressure in the furnace for nozzle pressure
= 0 mbar 0.57 0.73 0.96 1.2 1.57 2.0 2.5
Smoke temperature (1) (3) °C 200 200 200 200 200 200 200
Mass flue gas flow
rate (1) (2)
Fuel oil Kg/h 516 615 716 823 947 1071 1163
Gas 568 677 789 906 1043 1180 1280
Combustion chamber Diameter,
combustion chamber mm 530 530 530 530 530 530 530
Width, combustion
chamber mm 638 638 638 638 638 638 638
Depth, combustion
chamber mm 1183 1343 1503 1663 1823 1983 2143
Volume m30.310 0.354 0.396 0.439 0.481 0.523 0.565
Stand-by losses (4) ∆T = 50K W 580 600 640 740 780 870 870
Net weight kg 1802 2072 2238 2454 2638 2880 3057
(1) Nominal operation (top boiler power).
(2) CO2= 13% on fuel oil and 9.5% on natural gas.
(3) Boiler temperature: 80 °C.
Ambient temperature: 20 °C.
(4) Stand-by losses in accordance with prevailing standard
(EN 303/304).

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3.3.2 Boilers for following countries: Germany, Austria, Serbia, Slovenia
*Maintenance consumption: total heat emission when the burner is
off as a percentage of the nominal input power when the difference
between the mean boiler temperature and the room temperature is
50K.
In order for the boiler to operate correctly, it is imperative
to respect the draught at the nozzle.
1 mbar = 10 mmWG = 10 daPa
Conditions of use:Test conditions:
Maximum operating temperature: 100 °C CO²Fuel oil = 13%
Maximum operating pressure: 6 bar CO²Natural gas = 9.5%
Thermostat adjustable from 30 to 90°C Ambient temperature: 20 °C
Safety thermostat: 110 °C
Boiler GT 430-8 GT 430-9 GT 410-10 GT 430-11 GT 430-12 GT 430-13 GT 430-14
Useful output kW 220-265 265-315 315-365 365-425 425-485 485-550 550-615
Power input kW 238-288 286-342 339-395 392-459 457-527 522-595 591-663
Number of sections 8 9 10 11 12 13 14
Water content l 366 409 452 495 538 581 624
Water resistance ∆T = 10K mbar 14 24 37 51 68 92 121
∆T=20K 4 6 9 13172330
Pressure in the furnace for nozzle pressure
= 0
mbar 0.4 0.55 0.68 0.9 1.1 1.5 1.8
Smoke temperature (1) (3) °C 180 180 180 180 180 180 180
Mass flue gas flow
rate (1) (2)
Fuel oil Kg/h 450 530 610 710 810 910 1020
Gas 470 555 640 745 850 955 1070
Combustion chamber Diameter,
combustion chamber
mm 530 530 530 530 530 530 530
Width, combustion
chamber
mm 638 638 638 638 638 638 638
Depth, combustion
chamber
mm 1183 1343 1503 1663 1823 1983 2143
Volume m30.310 0.354 0.396 0.439 0.481 0.523 0.565
Maintenance
consumption* (3)
∆T = 50K % 0.17 0.15 0.14 0.12 0.11 0.11 0.10
Net weight kg 1802 2072 2238 2454 2638 2880 3057
(1) Nominal operation (top boiler power).
(2) CO2= 13% on fuel oil and 9.5% on natural gas.
(3) Ambient temperature: 20 °C.

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3.3.3 Boilers for following countries: Switzerland
*Maintenance consumption: total heat emission when the burner is
off as a percentage of the nominal input power when the difference
between the mean boiler temperature and the room temperature is
50K.
In order for the boiler to operate correctly, it is imperative
to respect the draught at the nozzle.
1 mbar = 10 mmWG = 10 daPa
Conditions of use:Test conditions:
Maximum operating temperature: 100 °C CO²Fuel oil = 13%
Maximum operating pressure: 6 bar CO²Natural gas = 9.5%
Thermostat adjustable from 30 to 90°C Ambient temperature: 20 °C
Safety thermostat: 110 °C
Boiler GT 430-8 GT 430-9 GT 410-10 GT 430-11 GT 430-12 GT 430-13 GT 430-14
Useful output kW 180-224 212-264 252-312 305-400 365-470 425-530 475-580
Power input kW 194-242 227-285 271-337 327-431 391-507 455-572 508-625
Number of sections 8 9 10 11 12 13 14
Water content l 366 409 452 495 538 581 624
Water resistance (1) ∆T = 10K mbar 10 17 27 45 64 85 107
∆T = 15K 5 8 12 20 28 38 48
∆T=20K 3 4 7 12162127
Pressure in the furnace for nozzle pressure
= 0 (1)
mbar 0.3 0.45 0.6 0.8 1.1 1.3 1.5
Smoke temperature (1) (3) °C 160 160 160 170 170 170 170
Mass flue gas flow
rate (1) (2) (4)
Fuel oil Kg/h 373 439 520 665 781 880 963
Gas 410 483 572 732 860 969 1061
Combustion chamber Diameter,
combustion chamber mm 530 530 530 530 530 530 530
Width, combustion
chamber mm 638 638 638 638 638 638 638
Depth, combustion
chamber mm 1183 1343 1503 1663 1823 1983 2143
Volume m30.310 0.354 0.396 0.439 0.481 0.523 0.565
Maintenance
consumption*
∆T = 50K % 0.2 0.17 0.16 0.12 0.11 0.11 0.10
Net weight kg 1802 2072 2238 2454 2638 2880 3057
(1) Nominal operation (top boiler power).
(2) CO2= 13% on fuel oil and 9% on natural gas.
(3) Ambient temperature: 20 °C.
(4) in accordance with DIN 4705 Teil 1.

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3.3.4 Boilers for following countries: Russia
In order for the boiler to operate correctly, it is imperative
to respect the draught at the nozzle.
1 mbar = 10 mmWG = 10 daPa
Conditions of use:Test conditions:
Maximum operating temperature: 100 °C CO²Fuel oil = 13%
Maximum operating pressure: 6 bar CO²Natural gas = 9.5%
Thermostat adjustable from 30 to 90°C Ambient temperature: 20 °C
Safety thermostat: 110 °C
Boiler GT 430-8 GT 430-9 GT 410-10 GT 430-11 GT 430-12 GT 430-13 GT 430-14
Useful output kW 300-357 357-419 419-481 481-543 543-605 605-667 667-729
Power input kW 329-394 392-462 460-530 526-597 595-666 659-731 727-798
Number of sections 8 9 10 11 12 13 14
Water content l 366 409 452 495 538 581 624
Water resistance (1) ∆T = 10K
mbar
25 42 63 83 106 135 169
∆T = 15K 11 18 28 37 47 60 75
∆T=20K 6 101621263442
Pressure in the furnace for nozzle pressure
= 0 (1) mbar 0.92 1.30 1.59 2.05 2.04 2.15 3.06
Smoke temperature - Ambient
temperature(1) (3)
K<190 <190 <190 <190 <190 <190 <190
Mass flue gas flow
rate (1) (2)
Fuel oil Kg/h 600 710 810 910 1020 1120 1220
Gas 630 740 850 960 1070 1170 1280
Combustion chamber Diameter,
combustion chamber mm 530 530 530 530 530 530 530
Width, combustion
chamber mm 638 638 638 638 638 638 638
Depth, combustion
chamber mm 1183 1343 1503 1663 1823 1983 2143
Volume m30.310 0.354 0.396 0.439 0.481 0.523 0.565
Stand-by losses (3) ∆T = 50K W 315 358 413 451 494 505 555
Net weight kg 1802 2072 2238 2454 2638 2880 3057
(1) Nominal operation (top boiler power).
(2) CO2= 13% on fuel oil and 9.5% on natural gas.
(3) Ambient temperature: 20 °C.

14 GT 430 05/03/2013 - 300011893-001-02
3.3.5 Boilers for following countries: Algeria, Bulgaria, China, Cyprus, Denmark, Finland, Greece, Morocco,
Norway, Romania, Sweden, Tunisia
In order for the boiler to operate correctly, it is imperative
to respect the draught at the nozzle.
1 mbar = 10 mmWG = 10 daPa
Conditions of use:Test conditions:
Maximum operating temperature: 100 °C CO²Fuel oil = 13%
Maximum operating pressure: 6 bar CO²Natural gas = 9.5%
Thermostat adjustable from 30 to 90°C Ambient temperature: 20 °C
Safety thermostat: 110 °C
Boiler GT 430-8 GT 430-9 GT 410-10 GT 430-11 GT 430-12 GT 430-13 GT 430-14
Useful output kW 300-390 390-450 450-540 540-600 600-670 670-720 720-780
Power input kW 329-434 429-502 495-599 594-670 661-751 737-804 789-871
Number of sections 8 9 10 11 12 13 14
Water content l 366 409 452 495 538 581 624
Water resistance (1) ∆T = 10K mbar 31 48 80 101 130 158 194
∆T = 15K 14 21 36 45 58 70 87
∆T=20K 8 122025334049
Pressure in the furnace for nozzle pressure
= 0 (1)
mbar 1.1 1.5 2.0 2.5 2.5 2.5 3.5
Smoke temperature (1) (3) °C 220 220 220 220 220 220 220
Mass flue gas flow
rate (1) (2)
Fuel oil Kg/h 650 750 900 1000 1116 1200 1450
Gas 700 810 972 1080 1207 1297 1405
Combustion chamber Diameter,
combustion chamber mm 530 530 530 530 530 530 530
Width, combustion
chamber mm 638 638 638 638 638 638 638
Depth, combustion
chamber mm 1183 1343 1503 1663 1823 1983 2143
Volume m30.310 0.354 0.396 0.439 0.481 0.523 0.565
Stand-by losses (3) ∆T = 50K W 315 358 413 451 494 505 555
Net weight kg 1802 2072 2238 2454 2638 2880 3057
(1) Nominal operation (top boiler power).
(2) CO2= 13% on fuel oil and 9.5% on natural gas.
(3) Ambient temperature: 20 °C.

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4 Installation
4.1 Regulations governing installation
Installation must be carried out in accordance with the prevailing regulations, the codes of practice and the recommendations
in these instructions.
4.1.1 In particular for France
Heating installations must be designed and constructed in such a
way as to prevent the return of water from the heating circuit and
products put into it into the drinking water network located upstream.
The installation must not be in direct relation with the drinking water
network (Article 16-7 of the departmental health Directive).
When these installations are fitted with a filling system connected to
the drinking water network, they comprise a CB disconnector
(disconnector for zones with non-controllable pressure differences)
which satisfy the functional requirements of the NF P 43-011
standard.
Residential buildings
Statutory terms and conditions of installation and maintenance:
The installation and maintenance of the appliance must be carried
out by a qualified professional in compliance with the statutory texts
of the codes of conduct in force, particularly:
- Order of 27 April 2009 amending the Order of 2 August 1977
Technical and safety rules applicable to combustible gas and
liquefied hydrocarbon installations situated inside residential
buildings and their annexes.
- NF P 45-204 standards
Gas installation, (formerly DTU 61-1, gas installations: April 1982,
addendum no 1: July 1984).
- Local Sanitary Regulations
For appliances connected to the electricity network:
- NF C 15-100 standards Low voltage electrical installation - Rules..
Establishments open to the public
Statutory terms and conditions of installation:
The installation and maintenance of the appliance must be carried
out in compliance with the statutory texts and rules of the codes of
conduct in force, particularly:
- Safety regulations against fire and panic in establishments open to
the public:
a. General regulations
For all appliances:
- Articles GZ - Installations operating on combustible gases and
liquefied hydrocarbons.
Then, depending on use:
- Articles CH-Heating, ventilation, refrigeration, air conditioning and
production of steam and domestic hot water.
b. Instructions specific to each type of establishment open to the
public (hospitals, stores, etc.).
Certificate of compliance (only concerns GT 430
boilers fitted with a gas burner)
In application of Article 25 of the Order of 27 April 2009 amending the
Order of 2 August 1977 amended and Article 1 of the amended Order
of 05/02/1999, the installer is required to draw up certificates of
conformity approved by the Ministers responsible for construction
and gas safety:
- Different forms (forms 1, 2 or 3) for a new gas installation
- Model 4 in particular after replacing a furnace with a new one.
4.1.2 In particular for Germany
Abide by the following standards, rules and directives when installing
and commissioning the boiler:
- DIN 4705: calculation of chimney dimensions.
- DIN EN 12828 (June 2003 edition): heating systems in buildings.
Planning of hot water heating installations (up to a maximum
operating temperature of 105°C and a maximum output of 1 MW).
- DIN 4753: drinking and industrial water heating installations.
- DIN 1988: technical rules on drinking water installations (TRW).
- DVGW-TRGI: technical rules on gas installations, including
complementary equipment.
- Working paper DVGW G 260/I: technical rules on the nature of the
gas.
4.2 Package list
ZSee assembly instructions.

16 GT 430 05/03/2013 - 300011893-001-02
4.3 Choice of the location
4.3.1 Main dimensions
(1) The lateral control panel can be mounted to the right or left of the
boiler. Exact height positioning defined by the fitter during assembly.
(2) Inscribed diameter (in mm):
- Front section : 455
- Intermediate section
: 530
Equivalent diameter (in mm): 573
Mk Tapped connection
Heating flow - weld
Heating return - weld
Rp 2" draining outlet
Sludge removal hole Rp 2" 1/2 - plugged
Boiler type GT 430-8 GT 430-9 GT 410-10 GT 430-11 GT 430-12 GT 430-13 GT 430-14
ø A (exterior) 250 250 250 300 300 300 300
ø  2" 1/2 2" 1/2 2" 1/2 3" 3" 3" 3"
ø C plate intact or pre-drilled to the diameter specified on order
D 235 235 235 254 254 254 254
E 1427 1427 1427 1447 1447 1447 1447
J 1800 1950 2120 2305 2465 2625 2785
L 1505 1665 1825 1985 2145 2305 2465
S 1183 1343 1503 1663 1823 1983 2143
Control panels B3, K3
and DIEMATIC-m3
F 113.5 113.5 113.5 113.5 113.5 113.5 113.5
G 355 355 355 355 355 355 355
H 190 190 190 190 190 190 190
K 1690 1690 1690 1690 1690 1690 1690
M 755 755 755 755 755 755 755
Standard panel - S3 F 127.5 127.5 127.5 127.5 127.5 127.5 127.5
G 130 130 130 130 130 130 130
H 105 105 105 105 105 105 105
K 1605 1605 1605 1605 1605 1605 1605
M 738 738 738 738 738 738 738

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4.3.2 Position of the boiler
For the assembly and because of their design, GT 430 boilers require
no special base. Their closed furnace system means that the floor
need not have refractory properties. All you have to ensure is that the
floor can support the weight of the boiler when it is fitted for operation.
If the boiler location is not determined precisely, leave enough space
around the boiler to facilitate monitoring and maintenance
operations.
The dimensions (in mm) correspond to the minimum recommended
dimensions needed to ensure adequate accessibility around the
boiler.
(1) Top view
(2) Burner door
* Pay attention to the overall volume of the burner when the
door is open. To install several boilers in cascade, these
dimensions should be adapted accordingly.
C000990-A
GT 430-8 GT 430-9 GT 430-10 GT 430-11 GT 430-12 GT 430-13 GT 430-14
Amm 1505 1665 1825 1985 2145 2305 2465
Bmm 130 -40 120 -40 120 -40 120
Cmm 1500 2000 2000 2000 2500 2500 2500

18 GT 430 05/03/2013 - 300011893-001-02
4.3.3 Ventilation
To allow the input of combustive air, sufficient ventilation must be
provided in the boiler room, for which the cross section and
emplacement must satisfy regulations in force in the country in which
the boiler is installed.
Position the air inlets in relation to the high ventilation vents in order
that the air is refreshed throughout the boiler room.
Do not obstruct the air inlets in the room (even partially).
In order to avoid damage to the boiler, it is necessary to
prevent the contamination of combustion air by chlorine
and/or fluoride compounds, which are particularly
corrosive.
These compounds are present, for example, in aerosol sprays,
paints, solvents, cleaning products, washing products, detergents,
glues, snow clearing salts, etc.
Therefore:
• Do not pull in air evacuated from premises using such products:
hairdressing salons, dry cleaners, industrial premises (solvents),
premises containing refrigeration systems (risk of refrigerant
leakage), etc.
• Do not stock such products close to the boilers.
If the boiler and/or peripheral equipment are corroded by such
chloride or fluoride compounds, the contractual guarantee
cannot be applied.
France
The minimum cross sections and the emplacement of the fresh air
inlet and the air discharge are governed by the order of 21/03/1968
amended by the orders of 26/02/1974 and 03/03/1976.
Generator installed in a building for collective use
(installations less than 70 kW)
`The fresh air inlet must:
- Come out in the lower section of the premises,
- Have a free minimum cross section calculated on the basis of 0.03
dm² per kilowatt installed output and at least equal to 2.5 dm².
`The air discharge must:
- Be located in the upper section of the premises,
- Rise above the roof (unless using an equivalent system which
does not cause a nuisance to neighbours),
- Have a free cross section (corresponding to 2/3 of that of the air
inlet and at least equal to 2.5 dm²).
Generator installed in a builing for individual use
`An adequate supply of fresh air must be provided as close as
possible to the appliances. Its cross section must be at least 0.5
dm².
`In the upper section of the premises, an air outlet must ensure
effective ventilation.
Establishments open to the public
`New establishment: Refer to the order of 25/06/1980
(installations of more than 20 kW and less than or equal to 70
kW).
`Existing establishment: Refer to the order of 25/06/1980
(installations less than 70 kW).

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4.4 Example of an installation
The example of an installation shown below does not cover every
possible configuration. Its sole aim is to draw your attention to the
basic rules to be respected.
GT 430 boiler with domestic hot water production using an independent tank.
8219N008C
92
14
12
17
11
27
9
56
32
9
10
1
9
57
9
27
26
15
9
17
18
919 20 9
17
16
13
3
79
7
30
28
9
29
27
9
31
56
9
9
9
1Heating flow
2Heating return
33-bar safety valve + Pressure gauge
5Flow switch
6Air separator
7Automatic air vent
9Isolating valve
10 3-way mixing valve
11 Boiler pump
12 Sludge decanting pot (particularly recommended on older
installations)
13 Flush valve
14 Water low safety pressure-sensitive switch
15 Shunt pump
16 Expansion vessel
17 Drain cock
18 Heating circuit filling (with disconnector depending on prevailing
regulations)
19 Water treatment
20 Water meter
26 DHW load pump
27 Non-return valve
28 Domestic cold water inlet
29 Pressure reducer (if mains pressure > 5.5 bar)
30 Safety unit calibrated to 7 bar with indicator type discharge
31 Independent domestic hot water tanks
32 Domestic hot water loop pump (optional)
56 Domestic hot water circulation loop return
57 Domestic hot water outlet

20 GT 430 05/03/2013 - 300011893-001-02
4.5 Hydraulic connections
4.5.1 Flushing the system
Installing the boiler in new installations
(installations less than 6 months old)
`Clean the installation with a universal cleaner to eliminate
debris from the appliance (copper, hemp, flux).
`Thoroughly flush the installation until the water runs clear and
shows no impurities.
Installing the boiler in existing installations
`Remove sludge from the installation.
ZSee: Sludge removal.
`Flush the installation.
`Clean the installation with a universal cleaner to eliminate
debris from the appliance (copper, hemp, flux).
`Thoroughly flush the installation until the water runs clear and
shows no impurities.
4.5.2 Sludge removal
A tapped ø 2’’ 1/2 hole with a plug has been provided on the
bottom of the front of the boiler..
Fit a 1/4 turn valve (not supplied) on the opening to remove the
sludge.
Sludge removal leads to the draining of large quantities of water, so
remember to refill the system after the operation.
After this operation, go ahead and fill the installation.
ZSee: Remplissage de l’installation.
never replace a boiler in an existing system without carefully
rinsing the system first. Install a sludge decanting pot on the
return pipe, very close to the boiler.