Siemens VPF53.65F35 Руководство - Страница 4
Просмотреть онлайн или скачать pdf Руководство для Блок управления Siemens VPF53.65F35. Siemens VPF53.65F35 14 страниц. Combi valves pn 25 with flanged connections
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Technical / mechanical design
7
A
Functional principle
4 / 14
Siemens
Building Technologies
2
3
6
4
5
B
The Combi valves VPF53.. combine three functions:
∂ a control valve (5) for controlling the volumetric flow,
∂ an adjusting mechanism (1, 4) with a dial for a presettable maximum volumetric
flow,
∂ a differential pressure controller (3) for balancing pressure fluctuations in the
hydraulic system respectively across the control valve.
The mechanical series-connected differential pressure controller keeps the
differential pressure (p
1
volumetric flow too. The desired maximum volumetric flow can be preset with the
adjusting mechanism. The controller (not shown) and the actuator regulate the
volumetric flow and consequently the desired temperature in buildings, rooms or
zones.
P- = P/T port, pressure test point with blue ribbon (6)
P+ = P/T port, pressure test point with red ribbon (7)
p
= pressure at inlet port A of Combi valve
1
p
= pressure at outlet port of control valve (5)
2
p
= pressure at outlet port B of Combi valve
3
Combi valves PN 25 with flanged connections
Ring with dial for presetting
1
1
Aperture for the differential pressure
2
controller is linked with outlet port B
Differential pressure controller
3
Plug with variable presetting opening
4
Control valve
5
Pressure test point (P/T) at outlet port
6
B, blue ribbon, P-
Pressure test point (P/T) at inlet port A,
7
red ribbon, P+
Inlet port A
A
Outlet port B
B
– p
) constant across the control valve and thus the set
2
A
Inlet medium (inlet port A)
B
Outlet medium (outlet port B)
1
Ring with dial for presetting
3
Differential pressure controller
5
Control valve with mounted
actuator
CE1N4316en
2018-04-18