Installation & User Guide

HMI VOLCANO UL (1-4-2801-0222), Rev. 16
5.1. CONNECTION OF HMI VOLCANO UL CONTROLLER TO THE VOLCANO VR MINI EC, VR1 EC,
VR2 EC, VR3 EC
Connect the HMI VOLCANO UL to the VR Mini EC, VR1 EC, VR2 EC or VR3 EC, according to diagram shown on Figure 1.
Figure 1 - VR MINI, VR1, VR2, VR3 connections
Tip: for VOLCANO VR Mini EC, VR1 EC, VR2 EC and VR3 EC (unit heaters with water heating coil), an auxiliary external temperature sensor
can be applied (out of VTS delivery) and connected to ports TS / TS of the controller. The supported temperature sensor type is NTC 10kΩ.
Tip: A two-way valve for water heater flow opening and closing can be connected to the H port of the controller and the L2.
5.2. CONNECTION OF HMI VOLCANO UL CONTROLLER TO THE VOLCANO VR-D MINI EC AND VR-D
EC AIR DESTRATIFIER.
Connect the HMI VOLCANO UL to the VR-D Mini and VR-D air destratifiers, according to diagram shown on Figure 2.
Figure 2 - VR-D Mini EC, VR-D EC connections