Tesy EV13S17S30065 - Indirect Hot Water Cylinder with Dual Heat Exchangers (300 L)
Other variants
- 300 L indirect hot water cylinder with two large heat exchangers
- Ideal for heat pump + solar thermal combinations
- CrystalTech PRO enamel ensures excellent corrosion protection
- Energy class B with low heat losses thanks to 50 mm PU insulation
- Prepared for immersion heater / electric backup
- Inspection opening, magnesium anode and recirculation port included
- High operating temperatures: 95 °C tank / 110 °C exchanger
Efficient domestic hot water production for modern systems
The Tesy EV13S17S30065 is a high-performance 300 L indirect hot water cylinder featuring two integrated heat exchangers. It is engineered for systems that combine multiple heat sources—such as heat pumps and solar thermal collectors—offering outstanding efficiency and flexibility. With two generously sized coils, the cylinder ensures rapid heat transfer and stable hot water availability, as confirmed in the product datasheet.
Dual heat exchangers for maximum system integration
The heat exchangers measure 1.55 m² (S1) and 1.45 m² (S2), giving installers the freedom to integrate various heating technologies. Suitable applications include:
- Heat pump + solar thermal
- Solar collectors + gas/oil boiler
- Heat pump + electrical immersion heater (optional)
This multi-source compatibility makes the EV13S17S30065 the ideal choice for both current and future-ready energy systems.
High efficiency with minimal heat losses
The cylinder is equipped with 50 mm polyurethane insulation, keeping thermal losses exceptionally low at only 68 W (ΔT 45K). This contributes to reduced running costs and improved overall system efficiency. With its energy class B rating, the cylinder meets demanding performance expectations in residential and commercial settings.
CrystalTech PRO enamel – built for longevity
The inner tank is coated with Tesy’s CrystalTech PRO enamel, offering outstanding corrosion resistance. Its magnesium anode further enhances tank protection, ensuring long-lasting performance even in areas with variable water quality.
Designed for easy installation and maintenance
With a spacious inspection opening, the cylinder allows quick access for cleaning or service tasks. The integrated recirculation port provides instant hot water at multiple taps—ideal for larger homes, guest accommodation or commercial applications.
Installer advantages
- Clear and accessible hydraulic connections
- Immersion heater compatibility
- Durable construction and compact dimensions (Ø 650 mm)
- Perfectly matched to Hewa products such as heat pumps and solar boiler systems
Recommended applications
- Medium to large households with multiple hot water draw-off points
- Renovations requiring high DHW comfort
- Heat pump systems needing larger storage volumes
- Solar thermal installations with dual coil requirements
- Small commercial facilities
Tesy – proven quality
Tesy cylinders are known for their excellent insulation, robust enamel lining and reliable long-term performance. The EV13S17S30065 delivers on all these aspects, making it a durable and efficient DHW solution for professional installations.
Support & delivery via Hewa
Not sure whether this cylinder fits your project? The specialists at Hewa will help you select the correct storage volume, hydraulic configuration and accessories. Contact us for technical guidance, in-stock availability or a personalised quotation.
| Generals | |
|---|---|
| Item number | 031330 |
| EAN Code | 5940000008222 |
| Price excl. VAT | € 987,60 |
| Price incl. VAT | € 1.195,00 |
| Sizes ((LxWxH):) | 65 x 65 x 142 cm |
| Specification list | |
| Volume | 300L |
| Diameter | 650 mm |
| Height | 1420 mm |
| Heat exchanger surface area | 1.55 m² |
| Heat exchanger S2 surface | 1.45 m2 |
| Heat exchanger S1 volume | 9.5 L |
| Heat exchanger S2 volume | 8.5 L |
| Max. tank temperature | 95 °C |
| Max. exchanger temperature | 110 °C |
| Heat loss (ΔT 45K) | 68 W |
| Insulation | PU-foam 50 mm |
| Net weight | 112 kg |
| Inner tank material | S235JR enamelled |
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