Dunkirk Excelsior EXB Series - Manual (Page 44)

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6. Genisys Control Sequence of Operation
A. Standby. Burner is idle, waiting for call for heat.
B. Valve-On Delay. Igniter and motor are on while
control delays turning on oil solenoid valve for pro-
grammed time.
C. Trial for Ignition. Oil solenoid valve is energized.
Flame should be established within factory set trial for
ignition time (“lockout time”).
D. Lockout. Control has shut down for one of following
safety reasons:
I. Trial for ignition (lockout) time expired without flame
being established.
II. Cad cell detected flame at end of Valve On Delay
State.
To reset from hard lockout, hold reset button 15
seconds until yellow light turns on.
E. Ignition Carry-over. Once flame is established,
igniter remains on for 10 additional seconds to ensure
flame stability.
F. Run. Flame is sustained until call for heat is satisfied.
Burner is then sent to Motor-Off Delay, if applicable, or
it is shut down and sent to Standby.
G. Recycle. If flame is lost while burner is firing, control
shuts down burner, enters 60 second recycle delay,
and repeats ignition sequence. Control will continue to
recycle each time flame is lost, until it reaches preset
time allotment. Control will then go into Hard Lockout
instead of recycle. Feature prevents excessive accu-
mulation of oil in the boiler firing chamber.
H. Motor-Off Delay. If applicable, oil solenoid valve is
turned off and control delays turning motor off for set
motor-off delay time before control returns to standby.
I. Pump Prime. Igniter and motor are on with solenoid
valve energized for 4 minutes. During Pump Prime
mode, cad cell is disregarded, allowing technician to
prime pump without having to jumper cad cell.
7. Genisys Control Reset Button Operation
See Table 11 for action control takes when reset button is
pressed for different lengths of time during various burner
operation states.
16 - OPERATING THE BOILER - SYSTEM START-UP
Figure 38 - Sequence of Operation
Table 11 - Genisys Control Reset Button Operation
If burner is in below
state:
Pushing reset button will:
Button Click
(press < 1 second)
Button Hold
(press > 1 second)
Button Hold
(press 15+ seconds)
Lockout Reset from Soft Lockout
Reset from Restricted (Hard)
Lockout
Valve-on Delay, Trial for
Ignition, Ignition Carry-
over
Go to Pump Prime
See
“Priming the Pump” page 44
Disable Burner: Anytime
burner is running, press and
hold reset button to disable
burner. Burner will remain off
as long as button is held.
Enables Pump Priming: After
reset button has been held for
15 seconds, button can then
be clicked during next ignition
sequence to enter Pump
Prime mode.
Run (Igniter shut off) No Action
Motor-Off Delay, Standby No Action
Pump Prime No Action Exit Pump Prime mode and return to Standby
Table 12 - Genisys Control Status Lights
Light Color On Continuously Flashing
Red Restricted (Hard) Lockout Soft Lockout
Green
Flame Sensed during normal operation
(Possible stray light during standby)
Recycle
Yellow
Control is in Pump Prime mode or
reset button currently held for 15+ seconds.
N/A