Bedienungsanleitung Wamsler K148F (Seite 51 von 120) (Deutsch, Englisch, Französisch, Italienisch)

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Care should be taken when calculating the heat requirement that not only the heat re-

quirement should be taken into consideration but that not only the heating stove itself radi-

ates but a poorly or none insulated boiler gives off heat in the room where it is installed.

Besides the frequently used cookers with built in heat exchangers and double shelled

cookers, which are also supplied in insulated versions, it is also possible to use the domes-

tic water unit with a through flow boiler.

As the pipes of a through flow boiler become calcified quickly where the water is hard, they

should only be used in areas where the water is very soft, that is very low in lime or only in

conjunction with a water softener.

Heating radiator pipes in pumped heating systems can use 1/2" pipe. It is recommended

that a circulation pump that can be regulated is incorporated where the delivery capacity

can be adjusted to the circumstances prevailing. The pump should be installed in the return

flow line. The direction of flow is important.

For exchange purposes if a repair is necessary, cut-off valves should be built in before and

after the pump.

Expansion vessels, boiler and pipes, which are installed in the loft must be well protected

against freezing.

If an installation is not used for some time in winter, it should be emptied. Radiators, venti-

lation valves or other cut off devices should be opened.

Before commissioning installation water must be fed through the filling and emptying cock

until water flows out of the overflow on the open expansion vessel. In the case of a closed

system, an over pressure of 1 to 1.5 bar must be created. In any case attention has to be

paid to slowly filling the system and the exhausting air through the integrated ventilation

valve before the above mentioned static pressure is reached or before the expansion ves-

sel overflows.

The closed system is recommended if possible for corrosion safety reasons. Corrosion

damage to domestic water boilers and stove boilers in open systems and to radiators be-

cause unhindered ingress of oxygen to the hot water cannot be excluded in the long term.

No domestic water may be taken from the heating circuit. Taking domestic water is only

permitted indirectly through intermediate heat exchangers (double shelled boilers or

through flow boilers).

The safety flow and return as well as the pipes to and from the domestic water boiler may

not be less than 1" diameter. Closed systems require a safety valve with an opening pres-

sure of 2.5 bar built into the flow line.

The manufacturer does not give a guarantee on corrosion damage to stove boilers, if non-

ferrous metals are used in the hot water circulation in open systems, in cases where no

suitable corrosion protection medium in accordance with the manufacturer's recommenda-

tions.

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