Description Of Diagram Operation (Figure 8) - Stropuva S7 Technical Passport Installation And Maintenance Instructions

6.1 DESCRIPTION OF DIAGRAM OPERATION (fi gure 8)
Pump (P) pulls water from heating elements and pushes it through boiler and into heating
elements. Through balance tap (bk1) hot water goes to closest radiator which can operate in
gravity circulation mode in order to protect the boiler in case of power loss (radiator has no
temperature valve).
Hot water further fl ows through boiler of non-solid fuel 2k (if it is present), which turns on
when boiler 1k stops burning or when 1k is turned on using inner automatics and 2k is turned
off. If boiler 2k is present in system, valve (2) is shut, if it is not present valve is open.
Hot water further fl ows through heater of water (B) and valve (3). If inputs of heater are
of suffi cient diameter, valve (3) is shut – more water is heated when fl ow goes only through
heater.
After heating the household water, termofi cation water fl ow to the radiator system and
through thermostat valve (T2-20-50), if needed, into fl oor heating system. Sensor of thermos-
tat valve opens the valve when water that is fl owing into fl oor becomes colder than selected
value (around 35 C) –and closes the valve when fl owing water is warmer than selected value.
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Thanks to this pump (P) water loudly circulates through coil-pipes (F) of fl oor heating, also
fl ows to boiler through distribution valve (T-3-20-50), which, when water from radiators is war-
mer than the selected value (recommended 40
tem thanks to the sensor, therefore temperature of premises is stable because even without
thermo-valves fl oor is still protected from overheating. (bk2) and (bk3) are closing valves (not
ball taps) or further valves for adjusting the fl ow, which distributes the fl ow in such manner that
it would be suffi cient for fl oor heating and suitable for boiler. Overall amount of fl ow depends on
circulation pump, but it also can be adjusted by changing the speed of pump. If system has no
fl oor heating, you should cover T2 with a cap – thermostat is not necessary. In summer, when
boiler is turned on for heating the water tank, radiators and fl oor collectors must be closed and
T2 must be opened by unscrewing the cap or removing the thermostat.
10 kW boiler can be paired with 25 – 60 W circulation pump.
20 kW boiler – with 40 – 80W
40 Kw boiler – with 50 – 100 W
(bk – 1) – balance valve of safety gravity operated radiator –fl ow must be adjusted to such
value that return pipe of radiator would be 40
(6) – separable connectors – after they are loosened node can be rotated to other side.
TECHNICAL PASSPORT INSTALLATION AND MAINTENANCE INSTRUCTIONS
C), directs part of colder fl ow to radiator sys-
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C colder than supplied.
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