Boiler Connection To The Heating System; Antifreezer Using; Boiler Protection Against Corrossion - ATTACK DPX COMBI PELLET Series Instructions For Use Manual

EN

2.4 BOILER CONNECTION TO THE HEATING SYSTEM

Boiler ATTACK DPX COMBI Pellet must be installed in system complying with the quality of heat-
ing water as follows:
Slovak Republic:
Austria:
Germany:
Switzerland:
Italy:
Before installing the boiler, it is necessary to flush (to clean) the whole heating system. The sys-
tem can be filled only the water treated to the values under the STN 07 7401: 1992. The water
has to be clear, colorless, free of suspended substances, oil and chemically aggressive impurities
and must not be acidic (pH must be higher than 7,2).
Callosity of the water must not excess 1 mmol/l and concentration of the Ca² must be lower
than 0,3 mmol/l.
ATTENTION: If these conditions are not kept, the warranty is not valid!

2.4.1 ANTIFREEZER USING

It is not recommended to use antifreezer because of their unsuitable properties for the boiler. In
particular, the reduction in heat transfer, large volume expansion, aging, damage rubber com-
ponents. In urgent cases, it is possible to use antifreezer Alycol Term (manufacturer Slovnaft Bra-
tislava) – according to the experience of the manufacturer, it could not be a decrease in the safe-
ty of use and significant effects on the boiler. Unless the specific conditions this method of frost
protection heating system feasible, non–performance functional parameters or any defects in
the boiler due to the use of other antifreezer, can not be addressed under warranty.

2.4.2 BOILER PROTECTION AGAINST CORROSSION

Use of the mixing device (Regumat ATTACK–OVENTROP) is
a suitable solution of the problem with corrosion. It enables
creation of the separate boiler and heating circuit. Thereby is
the boiler protected against undercooling below 65 °C and the
creation of water steams, acids and tars in the boiler´s feeding
chamber is eliminated.
The Regumat ATTACK–OVENTROP device keeps the constant
temperature of the return heating water flowing into the boiler
over 65 °C by setting the thermostatic head to the level 5 – 6.
When the individual thermal regulation mixing valve is used, it
is possible to control the temperature of the heating water in-
dependently on the temperature of water in the boiler by set-
ting the flap. The temperature in the boiler has to be kept in the
range of 80 – 90 °C.
11
STN 07 7401:1991
ONORM H5195–1
VDI 2035
SWKI 97–1
D.P.R. no. 412
ATTACK–OVENTROP