ONICON Incorporated 727-447-6140
Page 21
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SYSTEM-20 BTU METER
SECTION 4.0
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 pages.
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
(23)
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.
User Screens
NEXT
SEL
!
Commissioning
NEXT
MENU
0
kBtu
!
Energy Total
BACK
NEXT
SEL
More Totals
Meter Data
! Alarm
Diagnostic
EXIT
BACK
