DeDietrich CBB Series User manual

CBB
Wood-burning boiler
User Guide
300008541-001-E
EN

2CBB 15/09/2008 - 300008541-001-E
.
Contents
1 Symbols used . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
2 Important recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
2.1 Aeration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
2.2 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
2.3 Fuel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
3 Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
3.1 Installing the heating. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
3.2 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
3.3 Boiler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
3.4 Control panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
4 Commissioning and ignition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
4.1 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
4.2 Ignition - CBB 20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
4.3 Adding more logs - CBB 20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
4.4 Ignition - CBB 30 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
4.5 Adding more logs - CBB 30 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
5 Cleaning and regular servicing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
5.1 CBB 20: Cleaning the boiler (Every 3 to 7 days) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
5.2 CBB 30: Cleaning the boiler (Every 3 to 7 days) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
5.3 Cleaning the flue gas collector (Around 1 time per month). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
5.4 Checking the doors (Around 1 time per month) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
6 Stopping the boiler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
7 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

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15/09/2008 - 300008541-001-E CBB
2. Important recommendations
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.
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.
2 Important recommendations
For a proper operating of the boiler, follow carefully the
instructions.
Any intervention on the appliance and heating equipment
must be carried out by a qualified technician.
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 fitter).
Keep children away from the boiler.
Incorrect use or unauthorised modifications to the
installation or the equipment itself invalidate any right to
claim.
Keep to the polarity shown on the terminals : phase (L),
neutral (N) and earth 4.
In the event of a power cut:
- Do not add any fuel.
Check regularly that the installation contains water and is
pressurised.
Keep the boiler doors closed during operation.
Open the boiler doors only during commissioning and
when adding fuel.
Do not burn unsuitable fuel.
2.1 Aeration
Position the air inlets in relation to the high ventilation vents in order
that the air is refreshed throughout the boiler room.
The minimum cross-sections and the positions of the fresh air inlet
and the air outlet must comply with prevailing regulations.
Do not obstruct the air inlets in the room (even partially).
Caution:
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 suck 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.

4CBB 15/09/2008 - 300008541-001-E
2. Important recommendations
2.2 Maintenance
- The boiler must be serviced and fully cleaned and the flue gas
conduit swept by a qualified professional at least 2 times per year.
- We recommend taking out a maintenance contract.
- The boiler must be cleaned every 3 to 7 days.
- Check the seal on the boiler doors 1 time per month.
- Regularly check the level of water in the system and top up if
required, taking care that cold water is not added suddenly into the
boiler when it is hot. If this operation is repeated several times per
season, locate the leak and repair it.
Do not drain the installation, except in cases of absolute
necessity. For example: Several months' absence with the
risk of ice in the building.
2.3 Fuel
Use
- Broad-leaved hardwood (oak, beech, hornbeam, etc.)
- Broad-leaved softwood (birch, poplar, lime, etc.)
- Resinous wood (pine, fir, spruce, larch, etc.): To be used
occasionally (2 to 3 loads maximum and follow with the same
number of hardwood and softwood loads)
• Characteristics of logs that can be used
- Dry wood, stored under cover (for at least 2 years), with a low
humidity level (less than 20% of the gross mass)
- Logs with a maximum diameter of 150 mm
- Maximum length of the logs:
- For improved combustion quality, prefer shorter logs (25 - 33 cm)
split into cross-sections with a maximum diameter of 10 to 15 cm.
- For more regular combustion, better boiler autonomy and
improved annual efficiency, arrange the logs in an orderly manner
in the combustion chamber.
• Calorific power and energy content of various types of wood
• Equivalent between storage volume requirements
Fuel oil: 2000 l F2m
3(1 m x 1 m x 2 m)
= 15 stere of logs F15 m3(3 m x 2.5 m x 2 m)
 Multiplied by 2 for storage over 2 years
(Drying of freshly cut wood)
Do not use
- Chipboard panels
- Coated, painted or treated wood
- Wood containing pieces of metal
- Wood not stored under cover for at least 12 months
- Any fuel other than wood
Model CBB 20 CBB 30
mm 500 500
Type of wood Broad-leaved
hardwood
Broad-leaved
softwood and
conifers
Gross humidity
(%) 20 30 20 30
Average weight of a stere
of wood
(kg/stere)
530 600 380 440
Calorific power
(kWh/kg) 3.9 3.3 3.9 3.3
Energy content
(kWh/stere) 2070 1980 1480 1450
Equivalent in litres of fuel
oil
(l/stere)
210 200 150 145

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15/09/2008 - 300008541-001-E CBB
3. Description
3 Description
3.1 Installing the heating
Depending on the heating installation, certain components can be
suppressed or added. Get your fitter to explain your installation to
you.
Désignation Fonction
CBB
Log-fired boiler with natural
draught
Burns wood in complete safety and protects the environment. Removes the heat from
the fumes given off by combustion and transfers it to the heating water.
EA108
Wall module for elevating the
return temperature
Used to read the return temperature. Stays off if the return temperature is lower than
60°C.
ML9
Thermostatic module for elevating
the return temperature
Used to prevent the return of water colder than 60°C into the boiler.
Logs The natural energy of wood is converted into heat by combustion in the Bioenergy
boiler.
Buffer tank Used for storing hot water extracted from the biofuel boiler (max. 85°C).
Compensates for any differences between heat production and needs.
Domestic hot water tank Maintains a reserve of domestic hot water for the household (e.g. shower) with an
electric back-up for the summer.
SV-matic 23 B
SV-matic 2233 BFS
Regulation
Optimally ensures the desired temperature on the premises and saves on fuel,
whatever the outside temperature.
Radiators or underfloor heating Transfers the heat from the heating water to the premises.
Heating pump Circulates the heating water from the boiler to the storage tank and from the storage
tank to the radiators and brings it back to the boiler where it is reheated.
Heating water and heating pipes Carries the heat produced in the boiler to the radiators.

6CBB 15/09/2008 - 300008541-001-E
3. Description
3.2 Safety
- Safety battery (delivered from the factory) to be connected to the
cold water by means of a control valve (option L33)
- Safety valve (To be installed by the fitter)
Motorised mixing valve
Adapts the outlet temperature from the boiler to the radiators in such a way as to
obtain the desired room temperature, whatever the outside temperature. This is done
by mixing the outlet water with the colder heating return water.
Pressure gauge Indicates the pressure in the heating circuit.
Air vent Ensures that there is no air in the heating pipes.
Safety valve Prevents too great an increase in pressure in the installation.
Expansion vessel Maintains a constant pressure in the installation and absorbs the water caused by
expansion.
L33
Safety exchanger control valve Use to trigger the safety battery which protects the boiler against overheating.
Désignation Fonction

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15/09/2008 - 300008541-001-E CBB
3. Description
3.3 Boiler
•CBB20
•CBB30
1. Control panel
2. Loading door
3. Secondary air adjustment flap
4. Ash removal handle
5. Inspection hatch (Ashtray)
6. Air regulator flap
7. Air regulator flap chain
8. CBB 20: Draught moderator setting
CBB 30: Smoke nozzle
9. Output modulator
10. Safety exchanger (To be connected by the fitter)
11. Sensor tube for the safety exchanger control valve
12. Setting the primary air / secondary air ratio
13. CBB 30: Smoke extraction handle
13

8CBB 15/09/2008 - 300008541-001-E
3. Description
3.4 Control panel
14. General ON 1 / OFF 0 switch (DHW pump)
15. Boiler thermometer
16. Storage tank load pump thermostat (And/or return temperature
elevating)
A000231
14 15 16

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15/09/2008 - 300008541-001-E CBB
4. Commissioning and ignition
4 Commissioning and ignition
4.1 Commissioning
Initial commissioning must be done by a qualified
professional.
1. Check the water pressure in the installation. Top up with more
water if necessary.
3. Carry out the boiler ignition operations (See chapter: Ignition -
CBB 20).
4. Set the output modulator to 80°C.
5. Open the air regulator flap by tensing the chain and wait for the
thermometer to reach 80°C.
6. Secure the chain to obtain an opening of 5 mm and mark the link.
Check that the air regulator flap is fully closed if the boiler
reaches 90°C.

10 CBB 15/09/2008 - 300008541-001-E
4. Commissioning and ignition
4.2 Ignition - CBB 20
1. Set the On/Off switch to 1.
2. Open the loading door.
3. Put some inflammable kindling with some paper on the bottom of
the combustion chamber. Leave a space of 2 to 4 cm between
the logs for the smoke to escape. Put in logs and light.
4. Close the loading door.
5. When the wood is well lit (about 20-30 minutes later), continue to
fill the combustion chamber.
Close the loading door.
4.3 Adding more logs - CBB 20
Only add more logs if the previous load has been consumed to
at least 1/4 of the original volume.
1. Open the loading door.
2. Add logs to the combustion chamber.
3. Close the loading door.
Maximum duration of the combustion of a load (in hours)
Model CBB 20
Hardwood/softwood 3
Conifers 2.5