Siemens VVG44.40-25U Instrucciones técnicas - Página 5
Navegue en línea o descargue pdf Instrucciones técnicas para Unidad de control Siemens VVG44.40-25U. Siemens VVG44.40-25U 7 páginas. Electronic two-way valves normally closed
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VE VVG Electronic Two-way Valves
Installation,
Continued
Wiring
Siemens Industry, Inc.
·
Mount the assembly in any position except with the actuator beneath the valve.
See Figure 2 for allowable mounting positions.
·
Before installing the actuator, use a protective plastic cap (Figure 1) to manually
position the valve. The plastic cap opens up to 80% flow from II (A) to I (AB). The
valve cannot be fully opened using the plastic cap.
NOTE:
Do not discard the plastic cap. It may be needed during troubleshooting or for
emergency valve operation.
CAUTION:
Dirt in the piping system can cause valve problems. Before starting-up and
troubleshooting the valve, make certain that the piping system is free of dirt
and foreign particles. It is recommended that a filter is placed upstream of
the valve.
WARNING:
On valve actuator wiring code, "G" is 24 Vac HOT, not ground.
Figure 2. Mounting Positions.
Figure 3. Terminal Connections in Actuator.
G, G0
24 Vac operating voltage
G = System potential
G0 = System neutral
Y
0 to 10 Vdc control signal
R
Input for 0 to 1000 ohms remote
setting unit or low temperature
detection unit
M
Measuring neutral
U
Output for 0 to 10 Vdc position
indication
Technical Instructions
Document Number 155-112P25
Rev. 3 August, 2002
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