ONICON System-30 BTU - Manual (Page 21)

11451 Belcher Road South, Largo, FL 33773 • USA • Tel +1 (727) 447-6140 • Fax (727) 442-5699 • [email protected]
System-30 BTU Measurement System Manual 05/14 - 0667-2 / 18335
Page 21
COMMISSIONING WORKSHEET - ONICON BTU METERS
Please read all installation instructions carefully prior to proceeding with these steps. Wiring
diagrams are located in the appendix. Use the following worksheet for checking off the
commissioning steps and recording measured values:
Step Test/Measurement S/N: S/N: S/N: S/N:
1. Meter location
2. Supply voltage verified
3. Verify diagnostic LED’s
are flashing.
4. Note and record
temperature readings
for T1, T2 and delta-T.
5. Note and record flow rate.
6. Confirm contact closure
output operation for
Mode 1 & Mode 2.
TROUBLESHOOTING GUIDE FOR ONICON SYSTEM-30 BTU MEASUREMENT SYSTEMS
NOTE: Also refer to the COMMISSIONING GUIDE located on the preceding page.
Reported Problem Possible Solutions
No flow signal/ energy signal
(While hydronic system is active) • Verify 24 VAC supply voltage to the
System-30.
• Verify correct wiring to the System-30 (see
wiring diagram).
• Check turbine for clogging due to debris.
• If none of the above, double check hydronic
system to ensure that flow is really present in
the line.
• NOTE: Flow meter function cannot be verified
by blowing on the turbine. The sensing
system requires a conductive liquid to
operate.
Displayed flow rate too high or too low • Verify that System-30 isolation valves are
fully open and bypass valve is fully closed (if
bypass is used).
• Check turbine(s) for debris.
• Verify supply voltages.
Displayed temperature(s) too high or too low vs.
expected values • Verify that thermowell is inserted into the
flow stream and that the temperature sensor is
completely inserted into the thermowell.
Data not available at the control system • Verify that the wiring to the building control
system is correct.
For technical assistance, contact ONICON at (727) 447-6140.