ONICON System-40-BAC BTU - Manual (Page 8)

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System-40-BAC BTU Meter Manual 03/15 - 1045-2 Page 8
SECTION 3.0: INSTALLATION
The SYSTEM-40 BTU 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 email 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 sites so that they are 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 system components will help the installers with
the initial installation, reduce start-up problems, and make future maintenance easier. For
example, do not install the flow sensor where it will be difficult for personnel to perform
periodic maintenance. When selecting a site for mounting the system components, consider the
criteria under Section 1.5: WORKING ENVIRONMENT, as well as the following.
The following limitations apply to the installation of the meter:
• The flow sensor body must be correctly oriented with respect to the direction of flow in
the pipe. Meters installed with reversed flow will not function.
• The System-40 is provided with 4.9ft (1.5m) cable lengths for the flow sensor and
temperature sensors. Do not alter the cable lengths. Doing so will void the calibration
and may invalidate the warranty.
• The maximum operating pressure for the flow sensor body, the direct insertion
temperature sensors and the temperature sensor adapter bushings is 400psi.
• Ball valves provided for use with direct insertion temperature sensors have a maximum
pressure rating of 232psi.
• Thermowells provided with the System-40 have a maximum pressure rating of 400psi.
• At fluid temperatures above 212°F the calculator 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, etc.)
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IMPORTANT NOTE
Proper site selection is critical to the performance of this Btu meter. Both the flow sensor and the
remote temperature sensor must be properly located within the piping system in order to ensure
an accurate energy measurement.