Onicon System-10 BTU Manual de usuario descargar pdf (Pagina 29)

11451 Belcher Road South, Largo, FL 33773 • USA • Tel +1 (727) 447-6140 • Fax (727) 442-5699 • [email protected]

System-10 BTU Meter Manual 03/15 - 0651-16 / 18323 Page 29

7. Verify the type of uid

used in the piping

system.

Conrm that the uid specied on the Btu meter certicate of calibration

matches the uid owing in the piping system.

8. Conrm correct supply

voltage.

Verify that correct AC voltage is available at the power supply input terminals.

System-10 BTU Meters are congured to operate from 24, 120 or 230 VAC input

voltage (not eld selectable).

Input voltages should be within the following ranges:

24 VAC: 20 - 28 VAC

120 VAC: 108 - 132 VAC

240 VAC: 207 - 253 VAC

The System-10’s internal power supply will provide 24 VDC to power the

ONICON ow meter (except F-3100/F-3200) which can be measured at T-4, pins

1 (+) and 2 (-).

9. Verify that the ow test

switch is in the RUN

position.

Conrm that the ow test switch is in the correct position. The ow test switch

is located in the middle of the motherboard immediately above the power

supply board. The switch must be set to RUN for normal operation.

In order to proceed with the following steps, the Btu meter must be operating and connected to the network.

There must also be ow in pipes. Flow signal readings should be taken while holding the ow rate constant if

possible. Otherwise, take the various output readings as quickly as possible.

10. Select the SUPPLY

TEMP page. Note and

record the temperature.

Scroll through the Btu meter display pages and select the SUPPLY TEMP page.

Note the displayed temperature and conrm that it is close to the design

supply temperature specied on the Btu meter certicate of calibration.

Record the temperature.

11. Select the RETURN

TEMP page. Note and

record the temperature.

Scroll through the Btu meter display pages and select the RETURN TEMP page.

Note the displayed temperature and conrm that it is close to the design return

temperature specied on the Btu meter certicate of calibration. Record the

temperature.

12. Select the FLOW RATE

page. Note and record

the ow reading.

Scroll through the Btu meter display pages and select the FLOW RATE page.

Note the displayed ow rate and conrm that it is within the expected range

specied on the Btu meter certicate of calibration. Record the ow rate.

13. For ow meters that

provide a frequency

output, measure and

record output(s).

Compare calculated vs.

displayed ow rates.

F-1200 or FB-1200 only

Conrm both turbines

produce pulses.

The average frequency output signal is a 0-15 VDC pulsed output ranging up to

200 Hz and must be measured with a frequency counter or oscilloscope.

Measure DC Frequency (Hz) at T4 from terminal 6(+) to 7(-).

GPM = Frequency in Hz x 60

Meter Factor in ppg.

(Refer to calibration tag for meter factor.)

For the F-1200 or FB-1200 dual turbine model, also measure and record the top

and bottom turbine signals.

Top Turbine: T4-12(+) to T4-2(-). Bottom Turbine: T4-13(+) to T4-2(-)

Also, measure DC volts on same terminals. Five to 7 VDC is normal for a

spinning turbine. Zero or 14+ VDC indicates a stopped turbine. (1 to 4 VDC

could indicate a problem.)

14. Compare and record

the displayed values

with those shown by

the building control

system.

Scroll through each page of the Btu meter display menu and compare the

displayed values with those shown on the building control network. Record

the results.

End of standard commissioning. Please contact ONICON at (727)447-6140 with any questions.

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Onicon System-10 BTU Manual de usuario Pagina 29

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