172-654741MA-01 (CV-COS-20/CV-COS-20D) 7 Oct 2021
11
7. Maintenance space
Leave sufficient space for maintenance, inspection and repair. (Units: mm)
CV-COS-20
CV-COS-20D
8. Trap outlet pipe
For ease of maintenance, installation of a union connection is recommended
for the trap outlet pipe.
Connect the outlet pipe to a condensate return line, or
extend it to a trench. In the case of the latter, make
sure the end of the pipe is above the waterline. (Dirt
and water may be sucked up by the vacuum formed
during trap closure and system shutdown.) If the end
must be underwater, make sure the piping has a
small hole, as shown in the drawing below.
9. Accessories
Always install a shut-off valve, pressure gauge and bypass lines at both inlet and
outlet. Ball valves, which will not retain condensate, are recommended for inlet
and outlet shut-off valves. The bypass pipe should be at least 1/2 of the size of
the inlet (primary side) pipe.
10. Installation environment
Check the installation environment to make sure that the ambient temperature
does not exceed the actuator ambient temperature limit and that no corrosive
gasses are present.
11. Installing the shut-off valve
Though the product adequately performs the function of a shut-off valve initially,
extended use will result in a drop in its performance as an isolation valve. Be sure
to install a separate shut-off or automatic valve if complete isolation is needed.
400
(16)
400
(16)
400
(16)
400
(16)
300
(12)
100
(4)
100
(4)
100 (4)
300
(12)
100
(4)
100
(4)
100 (4)
110 to 190 (4
1
/
2
to 7
1
/
2
)
Small hole
15 mm
(
1
/
2
in)
