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NOTES on the installation:
1.
If a cooling unit with VPF technology is installed, an external tank must be installed to guarantee minimum water content of 5 l/kw on the primary
2.
point in the system. In the case of system side pumps outside the cooling unit, the probe must be positioned properly downstream of the pump
unit
3.
If several units are installed in hydraulic parallel, a shut-off valve must be installed for each unit. The system side pumps will be external to the
cooling units and will be controlled by Rhoss
Rhoss VPF Solution (Variable Primary Flow)
VPF
T1
T2
T3
T4
ΔP
Section II :: Installation and maintenance
(0-10 V)
(0-10 V)
T
(T3)
OUT
P/DP
TANK
T
(T2)
IN
Primary side
pumps
System side
pumps
PI/DPI
ΔP
T4
T1
Disconnector
92
V2
V2
V3
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