Cetetherm AquaEfficiency EFB112 DD, Installation, Service And Operating Instruction

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Cetetherm AquaEfficiency
Installation, service and operating instruction
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11.14 Solar menu
AquaEfficiency can be acting with a SolarFlow or AlfaPilot working mode, allowing taking benefit of a solar
energy with primary storage tank installation or alternative energy recovering installation.
The Micro 3000 combined with extra sensors can pilot a second 0-10V signal valve actuator, allowing directing
the outlet primary flow towards the primary storage vessel or towards the boiler (or heat generator).
This distribution can be binary (open OR closed valve) in AlfaStore A configuration or proportional in AlfaPilot
configuration.
For more information see
18.12 Add AlfaPilot functionality.
Parameter Factory
Default
Setting Optional setting Description
Config_Solar No Option No/SolarFlow/
AlfaStoreA/ AlfaPilot
1)
Config selection
APilot_Reverse OFF Off/On Depending of used valve type, it is
sometimes necessary to invert the
opening/closing travel
DT Recov Min 5 -50 à +50 Use a negative value for a cooling mode
Heating mode=Positive value (5-50°C)
SolarFlow Hystere
2% 0-100
AlfaStoreA Hystere
2% 0-100
AlfaPilot Hysteres
2% 0-100
External_Dist_Sp
(intern/extern) Intern internal/external For AlfaPilot, set point relative to
Srenewable2(Pt2) and regulation around
this set point via AO4 signal output
(Valve No.2)
SP_Distrib_Intern
70°C Internal Setpoint for Pt2 if
"External_Dist_SP"=Intern
SP_Distrib_Ext
65°C External Setpoint for Pt2 if
"External_Dist_SP"=External
1 ) See 18.12 Add AlfaPilot functionality.
Remark :
If S5 is wired, Pt2 setpoint takes in account the external temperature, generating a heat curve
11.14.1 Solarflow
To use the Solarflow application, an extra sensor Pt1 is needed. It must be placed in the top of a primary
storage buffer vessel e.g. solar. See
18.9 Change or add an extra sensor and 4 Flowcharts .
When Solarflow is not active the AquaEfficiency unit is in standby mode, with valve closed and pump stopped.
Standby mode will be active until the temperature in the primary storage buffer (Pt1) becomes higher or the
same as the secondary return temperature (S2) plus the set parameter
DT Recov_Min , (when Pt1
≥S2+DT
Recov_Min .).
DT Recov_Min (default 5°C) is set in 11.14 Solar menu.
At this moment all other AquaEfficiency functions are operational and the system supplies energy regulating on
secondary outlet temperature S1.
When primary temperature (Pt1) is hot enough, the AquaEfficiency is put in Standby mode once again
Solar mode activates in the
11.3 Configuration menu.
Remark : In SolarFlow mode, eventual secondary pumps are always working and are not stopped, even in the
standby SolarFlow mode.