Fireye D30 Series, Manual, Page: 15 / 24

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FIGURE 4.
SIMPLIFIED SCHEMATIC DIAGRAM 70D30 CONTROL
Main Flame Test
1. Proceed through a normal startup. After the pilot flame is shut off, observe the reading on the
test voltmeter. If the voltmeter reading is low, readjust main flame or realign detector.
2. Check main flame failure protection by manually shutting off the main fuel supply. Within 4
seconds after main flame goes out, the fuel valve will be deenergized. The alarm circuit will be
energized following safety lockout.
Note: This test requires an interrupted pilot.
Minimum Pilot Test
This test assures that the flame detector will not detect a pilot flame too small to reliably light off the
main flame. This test should be made on every new installation, as well as after the following:
1.
A change-out of the control and/or flame detector
2.
Any repositioning of the flame detector.
3. Any air/fuel ratio adjustment or other change that may interfere with reliable light-off of the
main fuel.
This procedure should not be used on a direct spark ignited burner.
CAUTION: The minimum pilot test must be accomplished by a trained and qualified
burner technician.
1.
Manually turn off the main fuel supply.
2.
Place the check-run switch in the check position.
3. Turn power on and initiate a normal start-up.
4.
Reduce the fuel supply to the pilot until the “Fireye” light goes out. (If a test meter is used, the
DC test jack voltage will be below 5 volts).
5.
Slowly increase the fuel to the pilot until the DC test jack voltage reads about 16-20 volts. This
is the minimum pilot flame that the flame detector will reliably detect.
6.
Place the Check-Run switch in the Run position. When the main fuel safety shut-off valve is
energized, slowly open the manual main fuel valve.
7.
Observe the light-off of the main flame. It must be smooth and normal.
8.
CAUTION: If the main flame does not ignite immediately, shut off the main fuel.
Realign the detector to require a larger minimum pilot flame.
9. Repeat the test until reliable, smooth light-off occurs with the minimum pilot.
10.
After this test is completed, increase the fuel to the pilot to its normal setting.
5 6
7
M A
D
LS1-2
RB
ALARM
BLOWER
L2
L1
13
3
OPERATING CONTROLS
P
X
RV
RP RA
RL
SPARK IGN 10 PILOT
MAIN
RF
HOT
NEUTRAL
LOW FIRE
POSITION SWITCH
AIR FLOW
SWITCH
FUEL VALVE PROOF
OF CLOSURE