Pereko KSP Duo, Руководство по эксплуатации и обслуживанию

Страница: 63 / 84

39
Feeder Efficiency
Parameter used to rough calculation of boiler output (displayed
in INFO window) and of fuel level and it has no effect on control
of combustion process [kg/h].
Energy Density
Parameter used to rough calculation of boiler output; it has no
effect on control of combustion process. Its value for hard coal
amounts to approx. 6.5 [kWh/kg]
Tank Capacity
Parameter used to calculate fuel level [kg]. Note: Change and
confirmation of the value using the knob replaces previously
completed fuel level calibration with calculation of fuel level
using Tank Capacity and Feeder Efficiency parameters.
13 SERVIS SETTINGS OF PUMPS
CH pump standstill at HUW supply
Parameter available upon connection of HUW sensor. Too long
time of HUW container filling at active HUW priority may lead to
excessive cooling down of CH system because boiler pump (CH
pump) is switched off at this time. Parameter of
CH pump
standstill time during HUW filling prevents it by periodic CH
pump switch-on during HUW container filling. After that time,
CH pump will switch on for a fixed time set at 30s.
Min. HUW temperature
This parameter is available upon connection of HUW sensor and
prevents the user to set too low preset HUW temperature.
Max. HUW temperature
This parameter is available upon connection of HUW sensor. It
defines max. temperature to which HUW container will be
heated-up during discharge of excess heat from the boiler in
emergency conditions. This parameter is important, because
setting too high value may cause the risk of burning the user
with hot utility water. On the other hand, too low value of this
parameter will cause that in case of boiler overheating
excessive heat cannot be removed to HUW container. When
designing HUW system, possibility of regulator failure should be
considered. In case of regulator failure, water in HUW container
may be heated-up to hazardous temperature, which may
create the risk of burning the user. Therefore, some other
protection (e.g. thermostatic valves) should be used.
Incr. boil. temp. for HUW and mixer
This parameter determines by how many degrees the preset
boiler temperature will be increased to fill HUW container,
buffer and mixer circuit. Temperature is increased only if
required. Once the preset boiler temperature has reached
sufficient value to fill HUW container, buffer and mixer circuit,
the regulator stops its further increase.
HUW operation ext.
This parameter is available upon connection of HUW sensor.
Once HUW container has been filled and HUW pump has been
stopped, a boiler overheating risk may occur. It occurs in case
the preset HUW temperature is higher than the preset boiler
temperature. This issue refers particularly to the operation of
HUW pump in SUMMER mode, when CH pump is OFF. To cool
down the boiler, duration of HUW pump operation may be
extended by the time set in HUW pump operation extension
time.
Circulation support
This parameter switches on/off operation of circulating pump.
Upon activation in the user menu, the position of HUW
circulating pump is displayed. Note: this function is available
only in case Output H is set at circulating pump or mixer 1
support =
OFF or pump only .
Boiler shunt pump H1
Difference between temperature of the boiler and boiler return
at which boiler shunt pump switches on has to meet the
condition: H1>H2. To have this parameter available, Output H
has to be set at ”Boiler Shunt Pump”.
Boiler shunt pump H2
Difference between temperature of the boiler and boiler return
at which boiler shunt pump switches off has to meet the
condition: H1>H2. To have this parameter available, Output H
has to be set at ”Boiler Shunt Pump”.
Heat exchanger
It refers only to hydraulic systems with heat exchangers
connected between open and close circuit. Available options:
YES (boiler pump is in continuous operation in a limited
circuit: boiler - heat exchanger; it is not exclusive e.g. from