Passively Recovering Waste Heat Energy With Every Shower
Recoup Drain+ Duo
The Recoup Drain+ Duo is the lower efficiency version of the Drain+ Duo HE that requires a shallower installation depth. A slimline wet-room drain horizontal Waste Water Heat Recovery system for Showers (WWHRS) providing efficiency of up to 52%. Comprising a double-walled heat exchanger with no moving parts, no exchanger maintenance or end-user interaction.
Ideal for residential self-build and renovation projects, leisure clubs, gyms, nursing homes, holiday parks, hotels, student accommodation, ground floor or any walk-in shower installations. This WWHRS is available with either the contemporary brushed stainless steel ‘Quadratto’ cover plate, or the minimalistic ‘in-line’ tile cover plate.
Features and benefits
- Horizontal WWHRS – integrated shower drain for wet-rooms
- Patented, double-walled heat exchanger
- KIWA validated efficiencies of up to 42%, dependant on flow rate
- In-line tile or Quadratto cover plate options
- Built-in shower trap
- Legionella control risk assessed
- Option of 3 system installation variations
- High quality manufacture
- Virtually maintenance free
- SAP listed
Product application
Product diagram
Data & Specification
Specification details
| Description | Value | Unit |
| Minimum depth for installation | 140 | mm |
| Overall width for installation | 866 | mm |
| Material – Heat exchanger | Copper | |
| Shower flow rate | 5 – 12.5 | litres/min |
| Max. Mains water inlet pressure | 10 | bar |
| Min. Mains water inlet pressure | 1 | bar |
| Max. Waste water working temp | 85 | °C |
| Mains water connection | ½” male | BSP |
| Waste water connection | 40 – 43 | mm |
| Weight (Boxed) | 15 | kg |
| Water volume – mains water | 0.71 | litres |
Performance & efficiency
| Shower Flow Rate @ 40°C ( litres/min ) |
dRAIN+ DUO efficiency ( Recovered energy kWh ) |
||
| System A | System B | System C | |
| 5.8 | 41.9% (5.09) | ||
| 9.2 | 41.6% (8.01) | ||
| 11.0 | 40.4% (9.30) | 32.9% (7.57) | 36.6% (8.43) |
| 12.5 | 39.7%(10.39) | ||
Pressure drop on mains water circuit
| Shower Flow Rate @ 40°C (litres/min) |
dRAIN+ DUO Pressure drop ( bar ) |
||
| System A | System B | System C | |
| 5.8 | 0.07 | 0.04 | 0.03 |
| 9.2 | 0.17 | 0.11 | 0.07 |
| 12.5 | 0.27 | 0.17 | 0.11 |
Technical information and downloads
Recoup Drain+ Duo & In-line tile cover plate (+55mm Syphon) drawing
Recoup Drain+ Duo & In-line tile cover plate (+55mm Syphon) drawing document.
Recoup Drain+ Duo & Quadratto cover plate (+55mm Syphon) Drawing
Recoup Drain+ Duo & Quadratto cover plate (+55mm Syphon) drawing document.
Recoup Drain+ Duo installation and data
Guide to the installation, product details, performance and operation of the Recoup Drain+ Duo product.
Recoup WWHRS brochure
Recoup's Waste Water Heat Recovery System (WWHRS) Brochure and Portfolio to download, save, print or share. Provides background information on WWHRS and why to use it, SAP assessment, SBEM, BREEAM, Passive House, all product options, features, benefits, installation methods and links to additional useful information.
Download here...
