KEY RK-2001W4, Руководство по эксплуатации

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6.2. Central heating circulation pump working parameters.
Temperature of central heating pump turn-on. [P 40] – if the heating system is
not equipped with the accumulative tank ([ur 0], [ur 2] or [ur 3]), then the parameter
defines the level of the boiler water temperature at which the central heating pump
can be turned on. If it is set to ‘--‘, then too low temperature will not affect the pump
operation. However, it is turned on when the temperature of the boiler water exceeds
the [H 85] maximum temperature.
If the heating system is equipped with the accumulative tank ([ur 4]) – then the
parameter defines the value of the tank temperature at which the central heating
pump can be turned on. If it is set to ‘--‘, then the accumulative tank temperature will
not affect the pump operation.
Hysteresis of the central heating pump [Ph 2] – the parameter determines by
how many degrees the temperature of the boiler water or the accumulative tank
must be decreased below the temperature of turn-on so that the pump should be
turned off.
Time of restarting the central heating pump [Pc 2] – when the STOP mode is on
or the household thermostat circuit is opened, the pump is turned on for the period of
30 seconds so that the water of the heating circulation should be mixed. The
parameter determines the time of restarting the pump. The ‘--‘ value means turning
off the option.
6.3. The sensor and additional pump working modes settings.
The sensor and additional pump working modes [ur 0] – the parameter
determines the working mode of the output controlling the additional pump and of
the additional sensor input.
The [ur 0] value indicates the shortage of a sensor and additional pump. The sensor
input may remain disconnected as it is not taken into account when testing failures.
The [ur 1] value indicates that the domestic water pump is connected to the
additional output and the domestic water sensor is switched to the additional input.
In the mode, the domestic water pump is turned on when the tank water temperature
decreases by the [uh 5] hysteresis value from the programmed [u 50] value. After
the tank water has been heated up to the temperature programmed in the [u 50]
parameter or when the temperature of the boiler water is lower than the one
measured in the tank, the pump is turned off. Also, when the boiler temperature
decreases below the [L 45] minimum value, the domestic water pump will be turned
off. In the [ur 1] mode the domestic water is prepared with priority, which means that
while topping up the domestic water tank, the central heating pump is turned off.