3
19/03/2021 Swegon reserves the right to alter specifications.
CCO
kit
Technical/mechanical design
Characteristics & advantages
The flow sound from the valve is very low, lower than for
traditional valves of the same dimension.
The design means that heating and cooling can never be
run simultaneously, but both circuits will be in contact
with one another which means that a very minute volume
of heated water and chilled water will be exchanged
when the valve switches between heating and cooling.
It is important that systems are designed to be able to
handle the system liquid moving between the cold and
hot system.
Adjustment of the Kv-value
Kv-values can be set for cooling and heating using sepa-
rate adjustment screws.
Turn the screw clockwise to its stop position, then open
it a number of turns in order to achieve a specific Kv-value
Kv-value
Number of turns that the adjustment screw is open
A
B
C
D
E
F
G
H
Turns
0.5 turn
0.75 turn
1 turn
1.25 turn
1.5 turn
2 turns
3 turns
4 turns
Kvs m
3
/h
0.042
0.072
0.116
0.171
0.24
0.327
0.6
0.9
A B C D E F G H
Example:
In a typical case, a flow of 144 l/h is
required to obtain correct capacity in
the cooling case, and a pressure drop
of 10 kPa across the valve is desirable
to obtain good regulation.
In the diagram (see red marking), you
can see that this is achieved at the
preset Kv-value between F and G, i.e.
the screw should be opened approx.
2.5 turns, see Table above.
