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Charging Geothermal Heating Systems

Charging with Antifreeze

Correctly Charging a Geothermal Heating System Circuit

Heating and Brine Charging Valves

The brine circuit is to be charged with

a charging pressure of 1 bar

(diaphragm-type expansion vessel

initial pressure) + 0.3 bar as brine

header = total of

1.3 bar

The temperature difference during

this operation should not exceed 4 K

between sole inlet and outlet.

Flushing and charging (heating side).

The heating side must be flushed and

charged as well.

The initial pressure in the diaphragm-

type expansion vessel (heater, factory-

set at 1 bar) must be adjusted to meet

local requirements. (Static height in

0.1

bar.).

The charging pressure should be as

follows while cold: initial pressure

diaphragm-type expansion vessel

+ 0.2 bar (water header).

The Aquatop TC 19 and the

AQUATOP TC 11 HT are equipped

with 2 heater-side expansion vessels.

Important: Comply with water quality,

VDI 2035

Charging must be carried out in

accordance with DIN EN 1717.

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Detection Systems 7090i Istruzioni per gli Interventi Pagina 20