Installation Overview; Electrical Connection - Western Co WRM15 dualB Benutzerhandbuch

Installation overview

1) Blocking diode: prevents battery discharge to the PV module during the night, that is when the PV module has no
voltage.
2) Charging circuit with maximum power point track of the PV module.
3) Diverter circuit that charges the primary battery (battery 1) or the secondary battery (battery 2).
4) Output charging control circuit that is always powered exclusively by the primary battery (battery 1)

Electrical connection

1) Install WRM15 dualB in a dry and adequately ventilated place. Fasten on a non-combustible surface and position so
to leave a space without obstacles of at least 10 cm in the proximity of the device to allow cooling by natural air
convection.
2) Connect in the following order: the load , the sensor for measuring battery temperature (supplied), PV module and
finally the primary battery (battery 1) as in pic. 2. At the connection of the battery the controller turns on and begins
to operate. Use appropriate cable sections as indicated in pic.2. WRM15 dualB automatically recognizes the nominal
battery voltage, and adapt its operating thresholds.
3) Connect the secondary battery (battery 2). One flash of LED battery 2 indicates that the secondary battery has been
recognized properly. If it does not, this means that the secondary battery is not recognized and will be never loaded.
It is not compulsory to connect the secondary battery so, if not connected, the WRM15 dualB will load only the
primary battery.
4) Connect the Bluetooth® modem to the controller and test the connection through the application on smartphone.
5) Set the management program for the appropriate load to the application using the Bluetooth® connection on a
smartphone or tablet.
WRM15 dualB
User manual
Pic.1 Installation overview
EN
2