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Accumulation tanks

The best connection for solid fuel boilers, increases boiler life and several fuel consumption. If it cannot have the recommended volume of storage tanks, connect the boiler with at least one buffer tank with a volume of 500 l to 1000 l

Accumulation

Installing a boiler with storage tanks brings the following advantages:

  • lower fuel consumption (by 20 to 30 %), the boiler works at full capacity until the fuel burns out at optimal efficiency
  • high service life of the boiler and chimney – minimal formation of tars and acids
  • possibility of combination with other methods of heating – storage electricity
  • designed for combinations of radiators with underfloor heating
  • comfortable heating and ideal fuel combustion
  • guaranteed more environmentally friendly heating
  • warranty on the boiler body 3 years

We recommend connecting with batteries as the main connection.
If you cannot have the recommended volume of storage tanks, connect the boiler with at least one buffer tank with a volume of 500 – 1000 l. was able to charge these tanks in a reasonable amount of time.

Operation of the system with storage tanks

After flooding the boiler, we charge the maximum volume of storage tanks to the required water temperature of 90 – 100 °C during operation at maximum output (for 2 to 4 loads). We then let the boiler burn out. Furthermore, we only take heat from the storage tank with the help of a three-way valve for a time that corresponds to the size of the accumulator and the outdoor temperature. During the heating season (observing the minimum battery volumes, see the table) this can be 1 – 3 days. If accumulation cannot be used, we recommend at least one tank with a volume of 500 – 1000 l for balancing boiler starts and stops.

Tank insulation

Accumulation tanks are normally supplied without insulation. A suitable solution is the joint insulation of a given number of tanks of the required volume with mineral wool into a plasterboard skeleton, or additional filling with loose insulation. Recommended insulation thickness, when using mineral wool is 120 mm. Another option is to purchase already insulated tanks with mineral wool (100 mm) in a leatherette case, which our company also supplies.

DHW heating

For domestic hot water heating, we can use a combined boiler or storage tank with a copper flow heater.

Tank parameters

Dimensions of tanks type DH – new
Dimension (mm) Diameter (mm)
Tank type H A B C D E F ∅ D 1 2 3 4 5 6 7
AN 750 1750 140 95 110 130 90 366 790 5/4″ 5/4″ 1/2″ 1/2″ M48x2 5/4″ 1“
AN 800 1910 175 175 110 130 90 374 790 5/4″ 5/4″ 1/2″ 1/2″ M48x2 5/4″ 1“
 AN 1000 2210 140 95 110 130 90 366 790 5/4″ 5/4″ 1/2″ 1/2″ M48x2 5/4″ 1“
Dimensions of tanks type DZ
AN 500 1970 127 131 110 130 90 326 600 5/4″ 5/4″ 1/2″ 1/2″ M48x2 5/4″ 1/2″
AN 600 1611 169 131 110 130 90 341 750 5/4″ 5/4″ 1/2″ 1/2″ M48x2 5/4″ 1/2″
AN 750 2010 154 131 110 130 90 329 750 5/4″ 5/4″ 1/2″ 1/2″ M48x2 5/4″ 1/2″
AN 800 1910 175 101 110 130 90 374 790 5/4″ 5/4″ 1/2″ 1/2″ M48x2 5/4″ 1“
AN 1000 2065 175 108 110 130 90 342 850 5/4″ 5/4″ 1/2″ 1/2″ M48x2 5/4″ 1/2″

 

 

Minimum pipe diameters when connected to storage tanks
Boiler type and output part A part B
  in copper in steel in copper in steel
DC18S, C18S, DC20GS 28 x 1 25 (1″) 28 x 1 25 (1″)
DC22S, DC25S, DC25GS, C20S, DC22SX 28 x 1 25 (1″) 28 x 1 25 (1″)
DC32S, DC32GS, C30S, DC30SX 35 x 1,5 32 (5/4″) 28 x 1 25 (1″)
DC40GS, C40S, DC40SE, DC40SX 35 x 1,5 32 (5/4″) 28 x 1 25 (1″)
DC50S, DC50SE 42 x 1,5 40 (6/4″) 35 x 1,5 32 (5/4″)
DC70S, DC75SE, DC100 54 x 2 50 (2″) 42 x 1,5 40 (6/4″)

 

Minimum tank capacity
Output / kW 15 – 20 20 – 30 30 – 35 35 – 40 40 – 50 50 – 70 70 – 100 150
Volume / l 1000 – 1500 1500 – 2000 2000 – 2500 2500 – 3000 3000 – 4000 4000 – 5000 5000 – 6000 8000 – 9000