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INSTALLATION TESTING
Use of Test Meter (All Controls)
Testing the Fireye Modular M-Series II Controls requires the use of a test AC-DC multimeter, with a
1,000 ohm/volt DC rating or greater, or a digital meter with 500K input impedance or greater.
With the test meter on the DC scale, and the test meter leads inserted into the test jacks on the ampli-
fier module, a
steady
DC voltage reading of
4.0 to 6.0 volts (for UV amplifiers) and 6 to 18 volts
(for flame rectification amplifiers)
should be obtained when the controls are detecting flame, and
zero volts when no flame is present.
With the test meter on the AC scale, line and load voltages may be measured at the identified test
points on the chassis.
On the Modular M-Series II controls utilizing a flame rectification amplifier, a micro-ammeter may
be connected in series with the wire to Terminal S2. Normal flame will produce a meter reading
between 4 and 10 micro-amps.
Flame Signal Testing (All Controls)
1.
Manually shut off the main fuel valve for a pilot ignited burner, or the secondary fuel valve for a
direct spark ignited burner.
2.
Set the test meter on the DC scale and insert the test leads into the test jacks on the amplifier
module. (If the meter reads backwards, reverse the meter leads). Red - Plus, Black - Negative.
3.
Initiate a normal startup.
4.
When flame is established, the test reading should be normal: a steady DC voltage reading of
4.0 to 6.0 volts (for UV amplifiers) and 6 to 18 volts (for flame rectification amplifiers).
5.
Inadequate flame signal may be improved by:
a.
Assuring that the flame detector and wiring installations have followed the instructions on
Pages 5 through 9.
b
Assuring that the flame detector is clean and within the ambient temperature limits.
c
Assuring that the flame is sufficiently large to detect.
d
Assuring that the flame quality (fuel to air ratio, combustion air velocity) is satisfactory.
e
Trying a shorter sight pipe, or increasing the sight pipe diameter.
WARNING: Before making a pilot flame test, manually shut off the fuel supply to the main
burner.
Normal Pilot Flame Test
1.
Turn power on and initiate a normal startup.
2.
Observe the pilot flame signal on the test meter. If the average flame is below normal, a steady
DC voltage reading of 4.0 to 6.0 volts (for UV amplifiers) and 6 to 18 volts (for flame rectifica-
tion amplifiers), re-adjust the pilot flame or realign the flame detector.
WARNING: DO NOT TOUCH a flame rectification rod with power applied
.
3.
During the pilot flame test and adjustment period, if flame is not detected within 10 seconds, the
control will lock out. To reestablish the pilot flame trial for ignition (P.T.F.I.), manual reset of
the lockout switch is required, and a complete repurge is accomplished.
4.
When UV detection is used, a test is required to verify that UV radiation from the ignition spark
is not being detected. To accomplish this, manually shut off both pilot and main fuels. Initiate a
normal startup, observe the test meter which should read no more than 1/2 volt DC. If more than
1/2 volt DC is observed, realign the UV scanner, and/or shield the spark from the scanner’s
view.
