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- Three-way valves V: The directional valves found a wide application in the curtains for the
adjustment of heating medium flow through the heaters. The three-way directional valves with the
connection with internal threads V20 (on/off) are used. The valves should be installed in the supply
line, the flow is admissible only in the marked direction AB->A or AB->B.
Symbol
DN
k
VS
, m
3
/h
t[
o
C]
PN
Unit type
V20
20
3,5
1...110
16
Tropic-1
Tropic-2
FITTINGS:
Z: cut-off valve: manual
P: circulating pump
MV: three-way control valve con-
trolled by servomotor
- Valve MV servomotors: The servomotors that allow controlling the valves “continuous-0÷10V
DC” (by means of controller RT) or “on-off” (by means of thermostat TP or TPP) are used for a direct
installation on the valves. Therefore a position (protrusion) of the servomotor stem is proportional
to the value of control signal from the controller or thermostat.
Servomotor type
on/off
continuous signal
Supply voltage
230V AC
24V AC
Closing / opening
time
180 s
150 s
Protection rating
IP40
IP43
Servomotor [on-off] MV+V20
L-N Supply voltage 230V AC
Servomotor MV - continuous signal
Y Input control signal 0…10V DV
G0 System zero
G Phase, 24V AC
- Service switch WS: It is intended to switch off the fan motor in order to carry out service works.
The use of the switch WS prevents an unexpected activation of the motor that could cause the risk
during the service works.
Type
WS-3
Poles
3-pole
Supply circuit switch
3-phase
Rated continuous current
25A
Protection rating
IP 65
