Simplified sequence of operation, The burner should turn off quickly, Reference table 2 ) – Beckett 7590 Gas Power Burner Control User Manual
Page 11: Call for heat, status led is turned on, Control performs safe-start check, If safe-start fails, control locks out
11
GeniSys Gas Power Burner Control Installation and Operation Manual
will shut off and the main gas valve will
remain open.
◦
Multiple ignition trials may be needed to
establish gas flow on new installations or
if burner has been out of use. If control
locks out, push Status/Reset button to
restart ignition sequence.
◦
When the burner lights, the Flame LED
should be on continuously.
◦
Check burner for proper combustion per
burner or appliance instructions.
◦
Remove call for heat by turning the
thermostat or controller down.
◦
The MV LED, Flame LED and Status
LED should go off. The valve should
close. Motor should turn off.
◦
The burner should turn off quickly.
Simplified Sequence of Operation
(Reference
Table 2)
◦
Call for heat, Status LED is turned on.
◦
Control performs safe-start check
◦
If safe-start fails, control locks out.
◦
If safe-start passes, control checks for
presence of flame.
◦
If flame is present, control will enter hold
state until flame is no longer present.
Flame LED and Status LED will flash
until flame is no longer present.
◦
If flame is not present, control will check
status of air proving switch. If switch is
closed, (indicating the pressure switch is
stuck) control will enter lockout.
◦
If the air proving switch is open, the
motor will start. Once the air proving
switch closes, pre-purge will begin
(lasting 1-240 seconds). Pre-purge or
ignition timings will not start until the air
proving switch closes.
◦
The air proving switch must close to
prove combustion air is present. If switch
fails to close during the specified period,
the control will enter lockout.
◦
When pre-purge is completed, the control
turns on the igniter and the gas valve.
MV LED will turn on.
◦
Spark continues until end of ignition
timing or until flame is proved.
◦
Once flame is proved, The Flame LED is
turned on and the spark is turned off. The
gas valve and MV LED remain energized.
◦
If flame is not proved, the control will
lockout or enter the inter-trial waiting
period. Status LED will flash rapidly for
lockout or slowly for inter-trial waiting.
◦
If multiple trial logic is used, the control
will complete the trials for ignition
◦
When flame is proved the control will
continue in run mode until the end of
the call for heat.
◦
When the call for heat is ended, the
gas valve, MV LED, Flame LED, Status
LED and motor turn off.
Table 2 - Operating Sequence
LEDs
Call for Heat
FLAME
MV
STATUS
Status LED
turns on
Motor Start
FLAME
MV
STATUS
Status LED
ON
Pre-purge
FLAME
MV
STATUS
Status LED
Flashes
Ignition
FLAME
MV
STATUS
Status, MV
LEDs On
Run
FLAME
MV
STATUS
Status, MV,
Flame LEDs On
End Call for Heat
FLAME
MV
STATUS
LEDs Off
Timers &
Timings
Pre-purge Timer
1 - 240 Seconds
Ignition Trial
Timer
4 - 15 Seconds
Flame Check
On
On
On
On
On
Motor/Blower
Blower Starts
On
On
On
Off
Air Switch Check
On
Air Switch Closes
On
On
On
Igniter
On
Off
Off
Gas Valve
On
On
Off