KEY RK-2006LP, Руководство по эксплуатации, Страница: 27 / 40

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Domestic water pump extension time - this parameter specifies the time lapse
when domestic water is switched off since the moment when the programmed
temperature of domestic water tank was obtained. This setting is available, if
domestic water path „EXISTS” setting was selected and pump extension was
selected.
H W P U M P E X T E N D
T I M E 2 m i n
Sabilization time after heating up DHW – while preparing the domestic hot water
with priority on, the whole boiler capacity is used to heat up DHW. The boiler
programmed temperature when it works for the DHW is often higher than the
required temperature in the CH circulation. Additionally, when the CH pump is turned
off while it works with DHW priority, the cooldown of the heated rooms and activation
of the household thermostat input may occur. In such case, when the work with
DHW priority has finished, the temperature of the boiler water might be higher than
the temperature required for heating up the rooms – the fact may be the reason for
the burner extinction because the boiler upper hysteresis would be exceeded. The
parameter defines the time required to stabilize the circulation after heating the DHW
with priority on has finished. During the stabilizing, the upper hysteresis check is
stopped and the adaptive algorithm of the household thermostat is suspended. The
parameter is available only when the DHW duct is turned on.
S T A B . T I M E A F T E R
H W H E A T I N G 5 m i n
CAUTION! The option will not be active if preparing the DHW is carried out without
priority or the controller is in the SUMMER mode.
Mixing pump engaging temperature - this parameter specifies required return
water temperature so that the mixing pump engagement follows the controller. This
parameter is available if domestic water path „MIXING PUMP” setting was selected.
M I X I N G P U M P
E N G A G E T E M P 5 0 c
Mixing pump work hysteresis - this parameter specifies required return water
temperature increase in relation to the mixing pump engagement temperature so
that the controller switches off the mixing pump. This parameter is available if
domestic water path „MIXING PUMP” setting was selected.
M I X I N G P U M P W O R K
H Y S T E R E S I S 5 c