GeoSmart NETZERO BW Manuel D'installation page 25

Analogue outputs (AOxx)
These terminals send analogue 0-10Vdc regulation signals to modulate the control of outlet units with mixture, aerothermal source
units with variable speed fan, external auxiliary boilers, etc. On the other hand, these connectors have a 24Vac power supply terminal
to supply the modulating valve motor.
Figure 5.6. Example of 0-10Vdc modulating regulation signal connections.
Digital outputs to relay (DOxx)
These terminals provide 230Vac activation signals for various external components, such as outlet units, open / close 3-way valves,
external auxiliary equipment, etc. The connectors used for valve control allow connection of any type of 2 point control valve, as long
as it has a single-phase 230Vac power supply. The connection DO1, DO2 and DO3 provide 24Vac activation signals, you can connect
any type of 3 point control valve, as long as it has a single-phase 24Vac power supply
▪
Pay special attention to the maximum consumption allowed by each connector. Use an intermediate
relay for the connection, if necessary.
NOTE
A
B)
Figure 5.7. Example of digital outputs to relay for A) circulator pumps and B) open / close 3-way valves.
GEOSMART ENERGY
24Vac
Sgn
Figure 5.5. Example of digital input connections with 24Vac voltage.
GND
24V
ac
Vout
PE
N
L
PE
N
230Vac
Lon
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Installer manual NETZERO