Dunkirk Excelsior EXB Series - Manual (Page 43)

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E. Once burner is completely adjusted, start and stop
burner several times to assure good operation with no
fluttering or rumbling. Verify there are no oil leaks,
record nozzle size, oil pressure, combustion readings,
and air settings on tag or label attached to burner or,
boiler.
CAUTION
Do not run boiler unattended until following procedure
is completed. Failure to follow these instructions could
result in minor or moderate injury.
!
5. Check Genisys Oil Primary Control .
A. Preliminary steps
I. Check wiring connections and power supply.
II. Verify power is on to controls.
III. Verify limit control is closed.
IV. Check contacts between igniter and electrodes.
V. Check piping to oil tank.
B. Safe Start Check
I. Place jumper across cad cell terminals.
II. Initiate call for heat.
III. Burner must not start. Verify green light is on
continuously and control remains in standby mode.
IV. End call for heat and remove cad cell jumper.
C. Simulate Flame Failure And Ignition Failure
I. Initiate call for heat.
II. After flame is established and burner igniter turns off,
close hand valve in oil supply line.
III. At flame loss, control will enter recycle mode. Verify
green light is flashing. Control will remain in recycle
for 60 seconds.
16 - OPERATING THE BOILER - SYSTEM START-UP
WARNING
Electrical shock hazard. Following safety checks shall
be completed by qualified agency. Failure to do so
could result in death or serious injury.
!
NOTICE
Control contains no field serviceable parts. Do not
attempt to take it apart. Replace entire control if
operation is not as described.
IV. After 60 second recycle period, control will try to
restart system.
V. After 15 second lockout time, control will lock out
burner and reset button will flash. Verify burner,
motor and igniter are off and burner solenoid valve (if
used) is not energized.
VI. Open hand valve in oil line.
VII. Click reset button and verify red light in reset button
shuts off and burner lights.
VIII. End call for heat.
Figure 37 - CAD Cell Location
D. Cad Cell Check : Cad cell resistance can be checked
with use of Genisys display module or Genisys
contractor tool. If not available, cad cell leads can
be unplugged from control and resistance measured
in conventional way. Conduct these tests with flame
present. See Figure 37.
Flame Detection Range
• Normal (0-1600 ohms)
• Limited (1600 ohms to lockout)
E. Power Failure Check: After flame is established,
turn power off to control / burner. Burner should shut
down safely. When power is restored, normal ignition
sequence should be started.