— English Variomat 1 — 06.07.2016 – Rev. B
"EC" expansion lines
Because of the degassing function, you must install two "EC"
expansion lines.
One line to the system for the gas-rich water.
One line to the system for the degassed water.
The "DN" nominal connection diameter for the "EC" expansion
lines must be designed for the "P
0
" minimum operating pressure.
0,
see chapter 7.2 "Determining the P
0
minimum
operating pressure for the controller
" on page 36 .
The "DN" nominal connection diameter applies to an expansion
line length of up to 10 m. Beyond this length,
select the next
larger dimension. Integrate with the "V" main flow volume of the
system. Viewed in the system flow direction, the gas
-rich
expansion line must be connected upstream of the expansion
line transporting the degassed water.
late dirt cannot enter and thus creating an
overload of the "ST" dirt trap. Connect the "EC" expansion lines
according to the following installation variants.
Minimum
operating
pressure p
0
(bar)
≥ 2.0 X
0.5 - 2.0 X
-1 X
-2/35 X
-2 ≤ 3.5 X
-2 > 3.5 X
X
Note!
The water temperature at the connection point of the "EC" expansion lines must be in the range of 0 °C to 70 °C. The use
of auxiliary tanks
does not increase the range of use. Because the thermal protection is not ensured due to the flow during
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