ONICON System-40-BAC BTU - Manual (Page 15)

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System-40-BAC BTU Meter Manual 03/15 - 1045-2 Page 15
SECTION 4.0: SYSTEM-40 START-UP AND COMMISSIONING
4.1 START-UP
When power is first applied to the meter the display will be illuminated and the following start
screen will appear. Momentarily press SEL (select) to access the operating mode (User Screens)
display pages.
Verify that the meter is functional by stepping through the display pages and confirming the
flow rate and temperature data is within expected norms. Momentarily press NEXT or BACK
to change the displayed page. A complete list of the display pages is provided on the following
page.
Alarm Indication
Unit of Measure
When reviewing the displayed data, note the factory programmed engineering units on each
display page (e.g. kBtu, gallons, kBtu/h, gpm, °F, etc.). Note any changes that may be necessary.
These will need to be made during commissioning.
When reviewing the Supply and Return temperature display pages note which one has the word
“FLOW” in the lower left corner of the page. This is an indication of the flow sensor location in
the piping system. Verify the actual location of the flow sensor in the piping system. It is critical
that the correct location (supply or return) be programmed into the meter.
!
CAUTION
During start-up and commissioning, the FLOW location must be properly identified as being
in the supply or return pipe of the heat exchange circuit. The sensor’s position must then be
programmed into the meter. Failure to do so will result in significant errors in both the flow
and energy measurements.
To return to the commissioning mode from the user screens, momentarily press MENU. The
following page will appear. Momentarily press EXIT to return to the start screen.