Stratified Charging Module

Systematic heating

The stratified charging module

ensures that

the energy from a

solar heating system is also

optimally utilised.

The hydraulic module: the right system for all eventualities
No two heating systems are the same. Previously, the different requirements such as the integration of solar heating systems, the connection of multiple buffers or the separation of heating circuits had to be laboriously planned. There were no ready-made solutions including the control system. Commissioning, and in particular the cabling, was often very time-consuming. That's why ETA has developed modules for different requirements, which can be freely combined with one another and always work as a perfect system.
The module

Optimally harnessing the power of the sun:

Stratified charging module  

ETA SLM

For larger buffers with more than 100 litres per collector surface square meter or with very small solar heating systems, a stratified charging module ensures efficiency in the integration of thermal solar heating systems. For example in the morning when the sun is weak, the module supplies the lower half of the buffer. Once the sun is sufficiently strong to heat the upper, warmer buffer strata, the system switches to the upper half.
Technology
Technical data
1,000 l/h on solar side with 3 mWS external pressure lossfor collectors up to 20 m² in high flow for low collector workingtemperature with maximum solar yieldup to 40 m² in low flow for high collector working temperature with maximum tank utilizationconnecting ball valves DN 20 (3/4") internal threadplastic cover H = 600 mm, W = 400 mm, D = 190 mm

Scope of delivery

The module is delivered as a whole unit already pre-assembled on a mounting plate and includes:
MicroPlate® plate heat exchanger:
Solar side:
Speed-regulated high-efficiency pump WILO Yonos Para RS15/7 PWM 2, with check valve as gravity brake
6 bar solar safety valve with connection option for a membrane expansion vessel
Mechanical flow measurement
Purging connections DN 15 (1/2") external thread
Pressure gauge
Flow meter for heat quantity measurement (NOT CALIBRATED)
Connecting ball valves DN 20 (3/4") internal thread

Heating side:
Speed-regulated WILO Yonos Para RS15/7 PWM 1 high-efficiency pump
Changeover valve for flow stratification in 2 buffer storage zones
Safety valve 3 bar
Bleed valve (manual)
Connecting ball valves DN 20 (3/4") internal thread

Control system with safety plug: 
The components inside the module are already pre-wired.