P.W. KEY RK-2006SPGMS, Manual

Page: 7 / 36

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mode follows till flame is detected. If the flame is not detected within the specified
time, the controller activates „Out of fuel alarm”. Pressing STOP button, exceeding
time limit for cleaning, thermostat contacts opening or if water temperature in
domestic water tank is obtained during operation in IGNITION mode will result in
switching of the controller into EXTINCTION (SHUT DOWN) mode.
Stabilization of the firing.
Boiler burner is switched to the stabilization of the detected flame ignition. while
stabilizing the fan runs at a speed the same as when operating in maximum power.
tray gives fuel quantity such as the minimum power. in addition, depending on the
service settings fuel dose may be increased gradually. stabilization of the firing conti-
nues for the time programmed in the settings of the service or until the boiler
temperature. pressing the stop button, exceeding the working time without
cleaning, opening the contacts of the thermostat or to achieve the required water
temperature in the hot water tank during operation stabilization ignition, the controller
will switch to after-burning mode.
CAUTION! Stabilization of ignition can be turned off by a service technician. In this
case, after the fire the controller switches to work with maximum power.
MAX. POWER OPERATION MODE.
When in this mode the controller operates fuel auger and fan to ensure max. power
of the boiler. Fuel and air feeding rate is adjusted by the technician. Pressing STOP
button, exceeding time limit for cleaning, thermostat contacts opening or if water
temperature in domestic water tank is obtained during operation in MAX. POWER
mode will result in switching of the controller into EXTINCTION (SHUT DOWN)
mode.
MODULATED POWER OPERATION MODE.
Depending on desired parameters the controller may gradually reduce fuel and air
rate feeding to reduce burner power, as much as boiler water temperature corre-
sponds to the programmed setting. Pressing STOP button, exceeding time limit
for cleaning, thermostat contacts opening or if water temperature in domestic water
tank is obtained during operation in MODULATED POWER mode will result inswit-
ching of the controller into EXTINCTION (SHUT DOWN) mode.
MINIMUM POWER OPERATION MODE.
When in this mode the controller operates fuel feeding and fan operation to maintain
firing to ensure the minimum fuel consumption. Fuel and air feeding rate is adjusted
by the technician. If in spite of boiler minimum power, increase temperature follows
of water temperature in relation to the top hysteresis parameter setting, the controller
will be switched into EXTINCTION(SHUT DOWN) mode. When the boiler water
temperature drops below the desired setting it will result in switching of the controller
into „max power operation mode”. Pressing STOP button, exceeding time limit for
cleaning, thermostat contacts opening or if water temperature in domestic water tank
is obtained during operation in MINIMUM POWER mode will result in switching of
the controller into EXTINCTION (SHUT DOWN) mode.