Self-draining solar water heater (tank + sensor(s) + accessories) - ROTEX

Self-draining Rotex solar thermal kit

Description of the Rotex self-draining solar kit:

The ROTEX self-draining solar kit is ready to be installed. It consists of a 300L tank equipped with a solar domestic hot water exchanger and an electric battery, 2 Solaris Rotex V21P sensors, the hydraulic and regulation elements necessary for the operation and optimization of the production of solar hot water.

The water stored in the balloon is always the same, it is called dead water. The annual (or even bi-annual) water make-up constitutes the main part of the maintenance of the installation. This water stores calories. When there is a withdrawal of domestic hot water, the cold water that enters the tank passes through an exchanger, it is heated and sent to the withdrawal point. The volume of domestic hot water stored is therefore very low and its quality is not degraded as it could be after too long storage.

The cumulus volume of 300L which includes a reserve of 200L of water heated by hydraulic or electric back-up when necessary is well suited to a family of 4 to 6 people. The 4.2m² collector surface makes it possible to cover 40 to 60% of the domestic hot water needs of the home depending on the consumption profile, the orientation and inclination of the collectors, the geographical area, the solar masks possible...

To increase the solar coverage rate, it is possible to add a third sensor to the installation.

Precautions for installing the self-draining Rotex solar kit:

The solar installation does not contain glycol. In winter, when it freezes, there should be no water left in the collectors.
To do this, emptying must be done correctly, maintaining a continuous slope of at least 2% for the pipe connecting the collectors to the tank and maintaining a slope of 0.5% for the collectors (see instructions).

1 Solar return (1 female) 7 Solar outflow 13 Thermostatic mixing valve
2 Cold water (1 male) 8 RPS3 solar regulator 14 Solar rod
3 Hot water (1 male) 9 ES control regulation 15 Overflow connection
4 Thermowell 10 Solar outlet pipe 16 Electrical resistance (pre-assembled)
5 Volume indicator 11 Sensor fields 17 Anti-thermosiphon valve (accessory)
6 HybridCube storage tank 12 Solar return line 18 Handle

FLS Flow switch (flow rate and flow temperature)
PS1 Solaris Service Pump
PS2 Solaris Pressure Booster Pump
TR Solar reflux temperature sensor
TS Accumulator temperature sensor
TK Thermal sensor temperature sensor
TV Solar return temperature sensor
Vap Volume heated by resist. elect. (200l)

Rotex Self-Draining Solar Kit Warranty

• Thermal balloon: 3 years
• Stainless steel exchanger: 3 years
• Electrical resistance: 2 years
• Sensors: 5 years
• Regulation: 2 years

Certification of the self-draining Rotex solar kit

Solar Keymark and CSTBat certified sensors

Highlights of ROTEX technology

The Rotex kit as designed is very simple and quick to install. It does not require specific equipment for its installation. The solar installation is at atmospheric pressure and does not require glycol, there is no difficulty during commissioning to ensure the proper functioning of the system.

Think about it, lacentrale-eco is a permanent stock of solar water heaters in Lyon