Power Flame UCM-1000, Installation And Operation Manual

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3.5.23 Set and check operation of low Oil Pressure Switch. Set at approximately 80% of low fire oil pressure.
Check visually, or test electrically to confirm that circuit opens at the proper oil pressure.
3.5.24 Check Atomizing Air Switch. Set just below the minimum operating pressure during pre-purge. Check
visually, or test electrically to confirm that circuit opens on a loss of atomizing air pressure.
3.5.25 Check Blower Combustion Air Flow Switch.
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Shut burner power off.
Disconnect both wires at the air flow switch and temporarily clip them together. Make sure that they
cannot ground against anything, since they will be powered with 110 volts during the test.
Put a continuity meter across the common and normally open terminals on the air switch.
Disconnect the wire to the main automatic oil valve.
Start the blower motor. The meter should read electrical continuity as soon as the blower starts.
Disconnect the wire which energizes the coil of the motor relay (starter) or open the main power
disconnect switch to the burner. Within 3 to 4 seconds after the blower motor is de-energized, the
meter should indicate an open air flow switch circuit (no continuity).
If the switch does not open in 3 to 4 seconds, readjust accordingly. Turn the air flow switch
adjustment screw clockwise to shorten cut-off response time and counter-clockwise to lengthen cut-off
response time
8)
Turn the burner power off. Remove the shorting clip from the two disconnected wires and cap them with
a wire nut, let them hang loose (they will be powered with 110 volts, so don’t let them ground out).
Reconnect the wire to the main automatic oil valve. Turn the burner on. With the air flow switch wires
disconnected, the burner should go into a purge cycle, but neither the ignition nor the main fuel valve
circuits will be energized. If they do energize, there is a wiring problem. Correct as required.
Turn power off. Reconnect the air flow switch wires to the air flow switch terminals. Place burner back
into normal operation.
3.5.26 Check all burner and heat exchanger controls and operating devices.
3.5.27 The Owner’s Operating Instructions, at the end of this manual, should be posted in a clearly visible
location close to the burner.
3.5.28 If the burner operation is abnormal, refer to Section 5, Troubleshooting, as well as troubleshooting
information in the flame safeguard manufacturer’s bulletin shipped with the burner. It is also strongly
suggested that all test procedures outlined in the flame safeguard control manufacturer’s bulletin be
conducted.
3.5.29 Complete the Burner Start-Up Information and Test Data sheets on pages 33, 34 and 35.
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4.1.1 The UCM is equipped with an Induced Flue Gas Recirculation (IFGR) system which must be operational
during burner operation. The IFGR utilizes the flue gas to lower the overall NO
X
emissions to comply with
the NO
X
emission regulations.
4.1.2 This system has been successfully proven in field applications on firetube applications. Testing and field
operations have been performed using natural gas and light oil.