DRAIN BACK system

DRAIN BACK system is a proven technology developed by Hewalex.

The DRAIN BACK solution protects installations against overheating, thanks to a specially designed glycol tank mounted directly on the collector.

The tank is designed to work efficiently with two collectors of type KS2600F TLP AC, ACR /area 2.36m2/

Let's take a closer look at what this system is and what are the advantages of the DRAIN BACK solar system:

Solves the problem during periods of excessive solar radiation
- compared to the actual heat demand, after heating the hot domestic water, the solar pump turns off and the collectors are automatically drained

No problem during power outages
- a power outage from the grid does not lead to long-term overheating or degradation of the heat transfer fluid

Reduced need for components
- the system does not require an expansion tank and fewer valves and devices, making installation simpler

No risk of reverse heat flow from the tank
- eliminates a problem that can occur due to faulty check valves in conventional systems

Allows restart even at high collector temperatures
- unlike conventional systems, where steam formation prevents operation, this solution allows the system to be restarted even at high temperatures

Which components are needed to assemble the complete solar system with the DRAIN BACK system:

1. Solar collector KS2600F TLP AC /149002/, or KS2600F TLP ACR /149102/ - 2 pcs
2. DRAIN BACK mounting TANK SET /470200/ - 1 pcs
3. Control unit MiniSOL DRAIN BACK /713500/ - 1 pcs
4. Mounting brackets for collectors according to roof type - Carrier type: basic for the first two collectors - 1 pcs
5. Solar storage tank 300l /863000ZPE/ -1 pcs
6. Non-freezing mixture THERMSOL ECO 20l /803020T/ - 1 pcs
7. Stainless steel solar double pipe DN16 15m, or 20m /602V1615/ - 1 pcs
8. Manual pump for system filling- optional /730200/ - 1 pcs

4 items total

Wholesale discount

DRAIN BACK control set

278,24 € excl. VAT

342,24 €

- includes: solar pump with MiniSOL control and drain-back valve with pressure gauge

713500

Wholesale discount Wholesale discount 2

DRAIN BACK mounting TANK SET

215,65 € excl. VAT

265,25 €

- TANK tank, components DN16 for 2 collectors KS2600TLP AC, ACR

470200

Sale New Wholesale discount Wholesale discount 2

–20 %

Solar kit No. I DB

from 1 977,28 € excl. VAT

from 2 432,06 €

- 2x collector KS2600F TLP AC 2.36m² + DRAIN BACK system protects against overheating + 300L buffer tank + regulation via smartphone + mounting brackets

3492011