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F-4600 With LCD Flow Meter Manual 06/18 - 2020-3 / 35874
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SECTION 3.0: INSTALLATION
The F-4600 Flow Meter should be installed by experienced plumbers, electricians, and others with
related knowledge and experience in the heating, cooling, and fluid metering fields. ONICON technical
support personnel are available via telephone or e-mail to provide technical assistance before, during
and after installation. On-site field engineering, installation, and service are also available at an
additional cost. The installer should use good trade practices and must adhere to all state and local
building, or other, applicable codes.
Before you begin, clean the external surfaces of all pipes at the installation site so that it is free of
debris, foreign matter, solids, leak inhibitors, and chemically aggressive substances. Flush the entire
system so that it is free of flux, solder, pipe and tube cuttings and any other free moving debris.
3.1 SITE SELECTION
Careful attention to the site selection for the meter will help the installers with the initial
installation, reduce start-up problems, and make future maintenance easier. For example, do not
install the meter where it will be difficult for personnel to perform periodic maintenance. When
selecting a site, consider the criteria under Section 1.4: WORKING ENVIRONMENT, as well as
the information below.
The following limitations apply to the installation of the meter:
• The flow meter must be correctly oriented with respect to the direction of flow in the pipe.
Meters installed with reversed flow will not function.
• The F-4600 is provided with a 4.9 ft (1.5 m) cable for the detachable enclosure. Do not alter
this cable length. Doing so will void the calibration and may invalidate the warranty.
• The maximum operating pressure for the flow meter is 400 psi.
• At fluid temperatures above 212°F, the enclosure should be remote mounted.
• Do not install the meter in close proximity to strong sources of electromagnetic interference
(e.g. electric motors, VFD’s, fluorescent light fixtures, etc.)
3.2 INSTALLING THE FLOW SENSOR
Before you install the meter, the entire piping system should be flushed and free of debris. Please
refer to the diagrams on the following page when selecting the installation location. Upstream
straight unobstructed pipe requirements vary considerably based on nature of the upstream
obstructions. As a general rule, ONICON recommends a minimum of 10 diameters of straight
unobstructed pipe whenever possible; keeping in mind that it is always recommended that the
meter be located with as much straight pipe upstream as possible. Recommended minimum
straight run requirements are provided on the following page.