KEY RK-2006LP, Operating Manual, Page: 6 / 40

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3.2. Device operation modes.
Table 1. Operation mode list.
Operation mode Description
STOP Boiler control stopped. Controller maintains central heating and domestic
water pump operation, but automatic ignition does not follow.
STANDBY Controller maintains central heating and domestic water pump operation. In
case of heat demand automatic ignition of boiler follows.
IGNITION Controller carries out automatic ignition of boiler.
KINDLE FIRE
STABILIZE
Controlling the fan and auger to support the burner operation.
MAXIMUM
POWER
Fan and fuel feeder operate to reach boiler maximum power.
MODUL. POWER Controller reduces fuel feeding as much as boiler water temperature
corresponds to the desired setting.
MINIMUM POWER Fan and fuel feeder is minimized to maintain fire.
SCAVENGE
(AIR PURGING)
Controller activates blower to ensure removal of accumulated gases.
POSTCOMBUSTION No demand for heat or cleaning the furnace is needed. The feeder is turned off
and the fuel is reheated until the flame dies down.
EXTINCTION
(SHUTDOWN)
Controller shuts down boiler operation.
CLEANING Burner cleaning.
AUGER (MANUAL)
REFILLING
Manual operation of fuel auger. Boiler control stopped. Controller maintains
central heating and domestic water pumps operation, but automatic ignition
does not follow.
AUGER EXTINCT
(EMERGENCY
SHUTDOWN)
Fuel ignition in auger channel. The controller empties ignited fuel from the
auger channel until temperature drops.
ALARMS Safety and temperatures sensors failure alarms.
STOP.
Controller maintains central heating and domestic water pumps operation only to
protect the boiler against overheating and auger channel ignition. Room thermostat
contacts closing(call for heat) and domestic water temperature drop do not result in
any action. Pressing START button (10) will result in switching the controller to
STANDBY mode.
STANDBY.
In this mode controller does not carry out any additional operation, until room
thermostat contacts close (call for heat) or domestic water temperature drop, the
boiler operation will focus on maintenance of temperature according to thermostat
setting programmed with the knob. If preheating of domestic water tank is necessary
and the desired boiler temperature setting is higher from domestic water
temperature setting the controller will follow higher setting. Pressing the STOP
button (9) will result in switching to STOP mode.
IGNITION.
Boiler controller is switched into IGNITION mode if demand for heat follows, and if
the controller did not detect the flame. During ignition the controller activates fan,
auger and igniter. Fuel and air feeding rate is adjusted by the technician. IGNITION