For a DualSun installation to function properly it is necessary to have at least two temperature sensors:
- one for the solar cells (panel sensor)
- one for the reservoir (tank sensor for a DHW installation or pool sensor for a swimming pool)
In the case of a DHW installation, a control signal also needs to be able to be sent to the warm water pump of the solar station. This is accomplished via a PWM cable.
The panel sensor is integrally supplied with the panels. For DHW installations, the tank sensor and the PWM are supplied with our DualSun CS/2 control system. For pool installations, the pool sensor is supplied with our DualSun SLT control system.
It turns out that these two probes and the PWM signal (which makes it possible to estimate the flow within the installation) make it possible to make a calorimetric assessment of the installation and thus provide a thermal monitoring.
To be able to obtain this monitoring information you need to install the DualSun T-Box, which uses the flow and temperature information obtained by the sensors to output the thermal monitoring to your computer or smartphone. The T-Box also allows remote monitoring of the installation, facilitating after-sales service and limiting the number of required on-site responses.
NB 1: for more precise monitoring, 2 additional sensors can be installed.
In a DHW installation, they are to be placed at the top of the water tank and at the outlet of the exchanger into the tank.
In a pool installation, they can be placed at the pool entrance and at the base of the solar array.
These two probes will among other things make a more precise calorimetric assessment of the installation possible.
NB 2: Monitoring can be further enhanced by adding RPD and/or VFD sensors, calculating the system pressure and flow rate at any time, and transmitting these data to the controller. The VFD must then be sized according to the type of installation.