P.W. KEY RK-2001U, Руководство по эксплуатации

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boiler temperature is 2°C lower than desired boiler temperature the fan will work with
its maximum power [Π100]. Further increase of boiler temperature will cause fan
speed to be reduced gradually to its minimum power [n 40].
Automatic fan speed control [Πr 0] – it is on, when this parameteris set to „0-10” and
causes automatic fan speed decrease whentemperature of water in the boiler reaches
desired temperature.If this parameter is set to „-”, the fan automatic smooth
speedcontrol is disabled and the fan can work with power set by „Π” parameter.
Setting parameter value in range from 0 to 10 meanstime in minutes of the smooth fan
speed increase from 40% tovalue of „Π” for smooth boiler start.
Fan work time [Πn 5] – time of turning the fan on for a while, to remove accumulated
gases. Setting the parameter to "-" turns this function off. This function can be active in
WORK mode.
Fan pause time [Πu 6] – time between fan work periods.
4.2. Circulating pump parameters.
Circulating pump launch temperature [P 42] – temperature of water in the boiler,
which causes start of the circulating pump. Circulating pump works independently
from the control process and is launched additionally in case of boiler overheat.
Circulating pump launch hysteresis [Ph 2] – this parameter defines what value
should temperature decrease by, below circulating pump launch temperature, to turn
the pump off.
The work mode and pause time of CH pump [Pc 2] – in STOP mode or when the
room thermostat circuit is not shorted, CO pump is turned on for 30 seconds to move
water in the heating system. This parameter controls the repeat time. Setting this
parameter to „--” turns this function off. In case of some heating systems the pump
should work independently of room thermostat. In such case the parameter should be
set to value „F”.
4.3. Boiler work temperature setting.
Minimal boiler temperature [L 40] – minimal temperature, which you can set with the
boiler thermostat knob.
Maximum boiler temperature [H 85] – maximum temperature, which you can set
with the boiler thermostat knob.
Boiler temperature hysteresis [h 2] – this parameter defines what value should
temperature of water in the boiler decrease by, below temperature set with the
thermostat knob, to turn the pressure fan on.