elco Aquatop TC Series, Руководство по эксплуатации, Страница: 20 / 48

20
Charging Geothermal Heating Systems
Charging with Antifreeze
Correctly Charging a Geothermal Heating System Circuit
Heating and Brine Charging Valves
L
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
.
L
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
m 0.1 bar.).
The charging pressure should be as
follows while cold: initial pressure
diaphragm-type expansion vessel
+ 0.2 bar (water header).
L
The Aquatop TC 19 and the
AQUATOP TC 11 HT are equipped
with 2 heater-side expansion vessels.
L
Important: Comply with water quality,
VDI 2035
L
Charging must be carried out in
accordance with DIN EN 1717.