Robur GAHP Line AR Series, Инструкция по установке, эксплуатации и обслуживанию

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GAHP-AR – Installation, start-up, use and maintenance manual
54
Edition: 2014-08
4.3 CONTROL OF PLANT PUMP
Plant pump is controlled by the electronic board.
Controlling the pump from the electronic board of the appliance
Control of the plant water circulation pump from the electronic board of the appliance
depends on the power rating of the pump itself. 2 cases may be distinguished:
•
Direct control from the electronic board with power absorbed by the pump of less
than 4 A.
If the power absorbed by the pump is less than 4 A, make the connection as shown
in Figure 19, page 55 and check that the jumper (J10, located at the bottom left of the
electronic board, above the "NO Contact" contacts) is CLOSED, as shown in the
detail "jumper closed".
•
Direct control from the electronic board with power absorbed by the pump of more
than 4 A.
If the power absorbed by the pump is less than or equal to 4 A, make the connection
as shown in Figure 20, page 55 using a control relay.
In this case it is necessary to OPEN the jumper (J10, located at the bottom left of the
electronic board, above the "NO Contact" contacts) positioning it as shown in the
detail "jumper open" of the Figure.
For the connection of a single pump for several appliances connected on the same
hydraulic circuit, it is always necessary to provide a safety transformer (secondary
SELV) and a respective control relay, and to make the connections according to the
diagram in Figure 21, page 56.