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of the CH pump. Operation of the CH pump proceeds all the time, until the moment when the temperature
it falls below the set value in the reboiler. Then the CH pump shuts down and the hot utility water pump
is activated.
In this mode, operation of the fan and the feeder is limited to the temperature of 62 degrees in the boiler
because this prevents the boiler from overheating.
Note:
The boiler should have return valves mounted on the circuits of CH and HUW pumps. The valve
mounted on the HUW pump prevents hot water from being pulled out from the reboiler.
3.8.3
Parallel pumps
In this mode, both pumps work simultaneously above the pump activation threshold temperature
(preset at 40
O
C).
The CH pump works continuously and the HUW pump shuts down after reaching the temperature set at
the reboiler. Re-activation of the HUW pump will take place after the reboiler temperature drops below
the set value (see HUW hysteresis
NOTE:
In this mode, one should install a three-way valve or another mixing valve causing maintenance
of a different temperature of
3.8.4
Summer mode
After activation of this function, only the HUW pump, whose tasks is to additionally heat the reboiler,
operates. This pump is activated above the set activation threshold (see the pump activation temperature
function) and operates until the set temperature is reached. The pump will activate again when the
temperature falls below the set value and set hysteresis. In the summer mode only the set temperature
is set at the boiler which additionally heats the water in the reboiler (the set temperature of the boiler is
at the same time the set temperature of the reboiler).
3.9 S
CH
ET
TEMPERATURE
This option is used to set the set temperature of the boiler. The user may change the temperature range
at the boiler from 45 ̊ C to 80 ̊ C . The set CH can also be changed directly from the main controller screen
by rotating the knob of the pulse generator.
3.10 S
HUW
ET
TEMPERATURE
This option is used to set the set hot utility water temperature. The user may change this tem-
perature in the range from 40
3.11 W
ORK IN SUPPORT
This option is used to set the operation time of the feeder and the blow in the support mode
(above the set temperature).
3.12 S
UPPORT PAUSE
This option is used to set the time of pause in operation of the feeder during support.
Note:
Incorrect setting of this option may result in constant temperature increase! The pause in sup-
port should not be too short.
in the installer menu).
in reboiler and of a different in the house.
O
C to 75
O
C.
*
*
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