Johnson Controls VG8000H Handbuch Seite 32

10 E
General Indications for Installation:
In addition to the general installation guidelines, please observe the following points:
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If flange covers are being used, remove them.
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Ensure that the valve interior and piping system are free of impurities.
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Pay attention to position of valve relative to flow direction. Note arrows on valve body.
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When using a glycerine model, the valve must be mounted upright.
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Centre gaskets between flanges.
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Mating pipe flanges must be of identical type.
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Ensure installation without tension or torque.
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Do not use valve as a step or fixation point. Only piping supports it.
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Protect valve from dust or dirt, especially at construction site. Provide strainer or filter upstream of valve.
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Use compensators to balance out thermal expansion of piping.
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Ensure that stem thread and shaft are kept free of paint.
Installation Site Information:
The valve installation site should be easily accessible and provide sufficient room for service and removal of
actuators. Manual shut-off valves should be located up and downstream of the control valve, to facilitate service
and repairs without drainage of the piping system. The control valve should preferably be installed in the vertical
position with the actuator installed in the upright position. An inclined to horizontal installation without support is only
permissible for actuators with low specific weight.
Permissible weight of actuators installed in the horizontal position, relative to the valve stem, without additional
support at the site is:
Pipes should be insulated in order to protect actuators against high temperatures. The insulation should leave
enough room for servicing the stem packing.
To ensure trouble-free functioning of the control valve, the pipe immediately upstream from the valve should be
straight for the length of at least 2 x DN, and the pipe immediately downstream, straight for the length of at least 6 x
DN.
Actuator Mounting and Removal Information:
The control valve is normally supplied complete with actuator. It is not permitted to remove or replace an actuator
on systems in operation, under operating temperature and pressure. Servicing or conversion should be carried out
in accordance with the actuator SDI. During the mounting procedure, the plug should NOT be rotated with
downward pressure toward the seat.
Ensure adherence to maximum valve operating forces when replacing the actuator.
The maximum operating forces are:
Commissioning:
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Prior to commissioning check information on material, pressure, temperature, and flow direction in conjunction
with the installation piping plan.
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Follow TRB 700.
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Impurities in the piping system and valves, such as dirt, welding beads, etc. will cause the system to leak.
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Prior to commissioning a new installation or re-commissioning after repairs or service, ensure that:
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Correct installation and assembly work has been completed.
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Only qualified personnel carry out commissioning.
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The valve is in the correct functioning position.
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Installation of new, or maintenance of existing protective facilities is carried out.
20kg for DN 15-40
25kg for DN 50-80
30kg for DN 100-150
2000 N for DN 15-40
6000 N for DN 50-80
8600 N for DN 100-150
121 4734 050 E