ECOFOREST ecoGEO HP Serie Manuel D'installation page 42

Figure 1.16. Example of 0-10Vdc modulating regulation signal connections.
Digital outputs to relay (DOxx)
The relay terminal block provides digital outputs to control external equipment, such as circulator pumps or open / closed valves.
Each relay should be powered externally with the operating voltage of the component to be controlled. Power is supplied to each
relay separately, so different operating voltages can be used in each. The following figure shows an example of an installation of a
relay power supply.
NC: 22/12
COM: 21/11
NO: 24/14
A2/A1
Figure 1.17. Example of digital output relay power supply connections.
Each relay allows pole switching (line + neutral) with a capacity of 8A/250Vac per pole. If the equipment being controlled exceeds
this capacity, an external relay has to be installed. Shown below are examples of connections between circulator pumps and 3-way
valves with controls at 2 or 3 points.

Pay special attention to the maximum consumption allowed by each relay. Use an intermediate relay
for the connection, if necessary.
NOTE
All manuals and user guides at all-guides.com
Vout
24V
ac
GND
L N PE
DOxx
NC
COM
NO
41
Installer manual ecoGEO HP