Cetetherm AquaEfficiency EFB112 DD, Инструкция по установке, обслуживанию и эксплуатации

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Cetetherm AquaEfficiency
Installation, service and operating instruction
14
Installation of a Solarflow unit
6.1 Operating principle Solarflow
In the flowchart RS means a renewable source, eg solar, heat pump, condensate or else recover unit.
The 3-port mixing valve is activated only if temperature in STP or RS is hot enough, to limit DHW over heating
on S1.
Temperature on Pt1 is compared with S2 and allows or not, the primary pump, of the AquaEfficiency, to be
started.
If Pt1< S2+
ΔT then the primary pump is stopped. ΔT (
DT Recov_Min ) by default 5° is set in 11.14 Solar menu.
Thanks to the AquaEfficiency control, the temperature at S3 is compared with the temperature at S2 to adjust
the primary flow rate and obtain low temperature returns on primary side.
The “leaking flow” on secondary side, coming from the recycling loop, allows S2 sensor to be irrigated and to
keep SolarF
low “awaken” without the need of any flow switch.
If a flow switch must be used because of leaking flow could not be installed, connect it on Remote control
contact terminal or on pump´s start/stop contact.
6.2 Flowchart Solarflow
ID. NAME ID. NAME
CW Cold Water inlet Pt1 Primary vessel temperature sensor
DC Drain valve S1 DHW temperature sensor (master)
DHW Domestic Hot water S2 Secondary inlet temperature sensor
HE Heat Exchanger S3 Primary return temperature sensor
NR Non Return Valve V Shut-off valve
PP Primary pump V3V 3-port control valve with actuator
PR DHWC pump VR Balancing valve
PRV Safety valve STP Primary storage tank
RS Renewable source STS Secondary storage tank