30 Installation and maintenance instructions 0020244997_07
7.12.6.1 Using the auxiliary relay
1. Connect an additional component directly to the integ-
rated auxiliary relay using the grey plug on the PCB.
2. Carry out the wiring.
3. To start up the connected component, select the com-
ponent in diagnostics code D.026. (→ Page 39)
7.12.6.2 Using the VR 40 ("2 in 7" multi-functional
module)
1. Install the components in accordance with the respect-
ive instructions.
Condition: Components connected to relay 1
▶ Activate D.027. (→ Page 39)
Condition: Components connected to relay 2
▶ Activate D.028. (→ Page 39)
7.12.7 Actuating the circulation pump according to
requirements
1. Carry out the wiring.
2. Connect the connection cable for the external button
using terminals 1 (0) and 6 (FB) on the X41 edge
connector, which is supplied with the control.
3. Plug the edge connector into the PCB slot X41.