Diagram Operation Explanation - Stropuva S7 Technical Passport, Installation And Maintenance Instruction

Pump (P) pulls water from heating elements and pushes it through boiler and into
heating elements. Through balance tap (bk1) hot water goes to the closest radiator which
can operate in self-contained way in order to protect the boiler in case of power loss
(radiator has no temperature valve).
Hot water further flows through the 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 the system, valve (2) is shut, if it is not present
valve is open.
Hot water further flows through heater of water (B) and valve (3). If inputs of heater are of
sufficient diameter, valve (3) is shut – more water is heated when flow goes only through heater.
After heating the household water, termofication water flow to the radiator system and
through thermostat valve (T2-20-50), if needed, into floor heating system. Sensor of
thermostat valve opens the valve when water that is flowing into floor becomes colder than
selected value (around 35 °C) – and closes the valve when flowing water is warmer than
selected value.
Thanks to this pump (P) water loudly circulates through coil-pipes (F) of floor heating,
also flows to boiler through distribution valve (T-3-20-50), which, when water from radiators
is warmer than the selected value (recommended 40 °C), directs part of colder flow to
radiator system thanks to the sensor, therefore temperature of premises is stable because
even without thermo-valves floor is still protected from overheating. (bk2) and (bk3) are
closing valves (not ball taps) or further valves for adjusting the flow, which distributes the
flow in such manner that it would be sufficient for floor heating and suitable for boiler.
Overall amount of flow depends on circulation pump, but it also can be adjusted by
changing the speed of pump. If system has no floor heating, you should cover T2 with a
cap – thermostat is not necessary. During summer, when boiler is turned on for heating the
water tank, radiators and floor 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 – 80 W
40 kW boiler – with 50 – 100 W
(bk–1) – balance valve of safety gravity operated radiator – flow must be adjusted to
such value that return pipe of radiator would be 40 °C colder than supplied.
(6) - separable connectors – after they are loosened – node can be rotated to the other side.
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TECHNICAL PASSPORT, INSTALLATION AND MAINTENANCE INSTRUCTION
6.1

DIAGRAM OPERATION EXPLANATION