Instruction manual

Connection with heat accumulators

Connection system is based on principle of heating up of water in accumulation tanks, where the

warmth is gradually taken away from the tanks according to the request from the heating system.

By the operation with several heating ups at full performance, accumulation tanks will be

heated for the temperature of 90-100°C. Heating with accumulation tanks in connection with the

ATTACK DPX boiler brings more advantages. To the main advantages belongs longer boiler life-

time and also lower consumption of fuel. Recommended volumes of accumulation tanks according

to boiler output are following:

DPX25 - 1500 - 2000 l

DPX35 - 2000 - 2500 l

DPX45 - 2500 - 3000 l

Operation with accumulation tanks

After heat-up phase, the boiler heats the water in the accumulation tank to 90 - 100°C by full output

in 1-3 feedings. After burn-out, the heat is taken through the three-way valve only from the

accumulation tank. The offtake period depends on the tank volume and external temperature. In

heating season it can be 1 - 3 days (if the prescribed min. volume is respected). If it is not possible

to use the prescribed volume of the tank, it is recommended to use at least one tank of 500l volume

for start and finish boiler operation. Minimum volume of accumulation tank is given in the tabel

of technical parameters.

Standardly delivered accumulation tanks

Type of tank Volume (l) Diameter (mm)

Height (mm) Heat-exchange surface

(m2)

AK 500 500 650 1650

AK800 800 790 1730

AK1000 1000 790 2050

AS500 500 650 1650 2,0

AS800 800 790 1730 2,4

AS1000 1000 790 2050 2,8

Tank isolation

Accumulation tanks ATTACK AK500, AK800, AK1000, AS500, AS800 and AS1000 are delivered

with detachable isolation of soft polyurethane with red leatherette surface.