AB-7131
11
Installation
WARNING
When handling or transporting any heavy product (more than 18 kg), carefully move the product with a hand truck or
the like, or with 2 or more people.
Careless lifting or accidental dropping of the product may result in injury or product damage.
CAUTION
Do not freeze this product.
Doing so may damage the valve body and cause leakage.
When piping this product, be sure there is no foreign matter in the pipes.
If foreign matter remains in the pipes, the product may break down.
Install, wire, and use this product under the conditions specified by this manual.
Failure to do so may cause fire or device failure.
Installation and wiring of the actuator must be performed by personnel qualified to do instrumentation and electrical
work.
Mistakes in installation or wiring may cause fire or electric shock.
Notes for installation
Observe the following cautions in order to avoid failure of this product.
Do not subject this product to shock or impact.
Do not leave any foreign substances in the pipes of this product.
Observe the following instructions to remove foreign substances.
Provide a strainer on the inflow side of the valve.
For chilled/hot water: 40 or more meshes
If the strainer cannot be installed just before the inlet of each valve, install it on the pipe diverting sections for each piping
system.
Install the bypass pipes for this product and install the gate valves at the inflow, outflow, and bypass side.
Do not install this product nearby a steam coil or a hot-water coil.
High temperature radiation may cause device failure of the actuator.
Avoid connecting the product to pipes where water hammer may occur or slag, etc. easily collects.
Observe the following cautions in order to measure flow precisely.
Install straight pipes, minimum length is 2 times of valve diameter (d), on the inflow and outflow sides of the valve.
If flange gaskets are installed for connecting to the pipes, do not use the rubber gaskets or the gaskets that go inside the
pipes.
Install the product to pipes so that they are electrically connected at the same potential.
If the valve and the pipe are electrically isolated, noise will be generated, causing incorrect measurement and control of
flow.
In addition, observe the following cautions.
Place a drain pan under the valve.
Install the product where maintenance or replacement can be done easily.
Refer
to
■
“
Maintenance Space.
”
When installing the product in the ceiling, make a trapdoor within 50 cm around the valve.
