© 2023 Carrier 72
OPERATIONAL TEST (BURNER COMMISSIONING)
WARNING: Before testing the Burnerlogix operation on the boiler, close the manual
main shut-off fuel valve. Failure to do this may cause injury or property damage.
Close the manual main shut-off fuel valve.
1. Recheck all limit circuit wiring for proper operation and correct connection.
2. Confirm that the automatic main fuel valves are wired to terminal “7.”
3. Power the control and electronically check the proper sequence of operation
according to the System Operation section on page 36 of this bulletin.
4. After assuring yourself that all interlocks and valves are properly wired and that
the sequence of operation is correct, open the manual main shut-off fuel valve and proceed
cautiously through the boiler light off process. Check all safety interlocks for proper shut
down of the boiler.
When the installation and all burner adjustments are completed, the entire burner control
system is tested in accordance with the burner manufacturer’s instructions. The procedure
should verify the correct operation of:
1. Each operating control (temperature, pressure, etc.).
2. Each limit switch (temperature, pressure, low water cutoff, etc.).
3. Each interlock switch (airflow switch, high and low fuel pressure or temperature
switches, purge and low fire start switches, fuel valve proof of closure interlock, etc.).
4. Pilot flame failure response and lockout.
5. Main flame failure response and lockout.
6. Tight shut off of all fuel valves.
CAUTION: Live voltage is necessary to perform this test.
Line Voltage Test
A Voltage Check is necessary to identify a potential problem with the supply to the control.
This could be caused by an improperly sized or faulty transformer, faulty load coils
or low entry voltage. Follow this procedure:
1. Monitor the L1-L2 mains supply throughout a complete burner cycle. The
acceptable voltage range is 102V-132V (211VAC to 253VAC). At no time during
the cycle can the voltage dip below the minimum level.
2. Check other load terminals (M/L2, 5/L2, 6/L2, 7/L2) for voltage occurring at
improper times or improper values.
TEST CHECKOUT PROCEDURES
Normal Pilot Flame Test
CAUTION: Before making a pilot flame test, manually shut off the fuel supply to the
main burner so only the PILOT valve is operating.
1. At the start of PTFI, place the RUN/CHK switch in the CHK position.
2. Observe the pilot flame signal on the display or meter. If the average signal is below
the minimum of 10, readjust the pilot flame or realign the flame detector.
3. During the pilot flame test, if flame is not detected for a continuous 30 seconds, the
control locks out. To re-establish the pilot flame trial for ignition (PTFI), manual
reset of the lockout switch is required, and a complete prepurge must be done.