Buffer tank HYDRODUO TEREO

Presentation
All-in-one hydraulic module for geothermal heat pumps. Includes buffer tank + DHW and configurable for 1 or 2 heating zones.

Tanks and configuration

• Pre-assembled DUO tanks – Domestic Hot Water (DHW) and buffer tank.
• Module reference (example shown on page): ODHB.
• Available DHW capacities: 200 L and 300 L.

Function and benefits
Designed and manufactured in France, HYDRODUO is a ready-to-install solution that simplifies geothermal heat pump installations. It integrates essential components in a compact, standardized layout for fast, reliable and durable deployment, providing optimal end-user comfort.

Compatibility and use

• 100% compatible with the geothermal heat pump TEREO.
• Also works with Airwell heat pumps (R290 or R32, monobloc or split) up to 16 kW.
• Stores heat produced by the heat pump to reduce short cycling and optimize energy consumption.

Components and features

• Plug & Play: pre-assembled to save installation time.
• Stainless steel vessels for durability (exchange surface material: stainless steel 444).
• Large capacity adapted to WELLEA heat pumps up to 16 kW.
• Factory-integrated backup DHW heater to ensure hot water in case of outage or malfunction.
• Compact footprint for space savings (example footprint: 0.57 m²).

Modularity / ranges
The product is offered in several modular configurations to suit site requirements:

• HYDRODUO ESSENTIEL: electric backup heater, 3-way DHW valve, DHW valve actuator.
• HYDRODUO 1 ZONE: electric backup heater, 3-way DHW valve, DHW valve actuator, zone 1 circulator, temperature sensors (DHW).
• HYDRODUO 2 ZONES: electric backup heater, 3-way DHW valve, 3-way valve for zone 2, DHW valve actuator, circulator zone 1, circulator zone 2, temperature sensors (DHW & zone 2), zone 2 valve actuator.

Comfort and applications

• Compatible with underfloor heating (including cooling) and fan coil units for year-round comfort.
• Ideal to stabilise geothermal heating systems and improve overall efficiency by storing produced energy.

Documentation and media
Product data sheet available (dedicated technical PDF). Presentation and factory videos available.

Technical specifications

• DHW options: 200 L or 300 L.
• DHW 200 L: heat exchanger surface 2.5 m²; exchanger material: stainless steel (444); energy class: C.
• DHW 300 L: heat exchanger surface 3.1 m²; exchanger material: stainless steel (444); energy class: C.
• Buffer tank: volume 90 L; maximum pressure 7 bar.
• Dimensions (vary by configuration):
  - 200 L module: Height 1700 mm; Diameter 620 mm; Unit dimensions (LxHxP): 1200 x 1840 x 800 mm; Net weight: 100–115 kg depending on version.
  - 300 L module: Height 2150 mm; Diameter 620 mm; Unit dimensions (LxHxP): 2250 x 1000 x 1100 mm; Net weight: 120–135 kg depending on version.
• Power & DHW backup: backup heater power 3 kW (depending on versions, Type E plug or control box depending on model).
• Indoor unit references (examples shown on page): 7SP130005 / 7SP130006 / 7SP130007 / 7SP130008 / 7SP130009 / 7SP130010 (depending on 200 L / 300 L variant and number of zones).
• Footprint: compact format (e.g. 0.57 m² as presented).