RVS Hygiëne boiler PDWT 200L+100L buffer
RVS Hygiëne boiler PDWT 200L+100L buffer
214 200 1001The Nexus PDWT 200+100 is a 2-in-1 stainless steel heat pump cylinder with a DHW boiler on top and a 100 litre buffer tank below, combining domestic hot water production and hydraulic buffer volume in one compact unit.
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Cost overview
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€ 1.653,07Article
Nexus PDWT 200+100 2-in-1 Stainless Steel Heat Pump Boiler with 100L Buffer Tank
The Nexus PDWT is a 2-in-1 stainless steel solution for heat pump systems: a domestic hot water boiler is positioned above a 100 litre buffer tank. This tank-on-tank design combines shower water storage and heating system buffer volume in one compact product.
The upper Duplex 2205 stainless steel boiler is designed for sanitary hot water production, while the lower AISI 304 buffer tank increases system water volume and improves hydraulic stability. This helps reduce frequent heat pump cycling and supports smoother operation of the heating installation.
The integrated AISI 316L corrugated heat exchanger transfers heat efficiently from the heat pump to the domestic hot water section. The separate buffer section below is ideal for installations where space is limited but both DHW storage and buffer capacity are required.
With Energy Label A, PU insulation, sensor pockets, electric backup connections and a frosted-metal outer casing, the PDWT series is built for professional installers who need a clean and space-saving buffer plus boiler solution.
Key Features
- 2-in-1 domestic hot water boiler and buffer tank
- Upper Duplex 2205 stainless steel DHW boiler
- Lower 100 litre AISI 304 heating buffer tank
- Improves hydraulic stability and reduces heat pump cycling
- AISI 316L corrugated heat exchanger
- Energy Label A and PU insulation
Specifications
Technical data - PDWT 200+100
| General | |
| Product type | 2-in-1 stainless steel heat pump boiler with lower buffer tank |
| Rated volume | 200 L |
| Actual volume | 189 L |
| DHW boiler volume | 200 L |
| Buffer volume | 100 L |
| Application | Domestic hot water and heat pump buffer function |
| Installation type | Vertical floor-standing |
| Connection layout | Upper DHW boiler with lower 100 L buffer tank |
| Number of heat exchangers | 1 |
| Height [mm] | 1907 |
| Tilt height [mm] | 2000 |
| Outer diameter [mm] | 600 |
| Inner diameter [mm] | 500 |
| Insulation | CFC-free rigid PU foam |
| Insulation thickness [mm] | 50 |
| Outer casing | Frosted metal, RAL 7030 |
| Weight [kg] | 70 |
| Warranty | 3 years |
| Tank | |
| Upper DHW tank material | Stainless steel Duplex 2205 |
| Lower buffer tank material | Stainless steel AISI 304 |
| Max. operating / test pressure | 6/10 bar |
| Max. tank temperature [deg C] | 95 |
| Heat Exchanger | |
| Exchanger type | Heat pump corrugated coil heat exchanger |
| Exchanger design | corrugated pipe coil |
| Exchanger diameter [mm] | 28 mm |
| Exchanger material | AISI 316L stainless steel |
| Exchanger length [m] | 25 |
| Exchanger surface area [m²] | 3.3 |
| Exchanger volume [L] | 11 |
| Max. exchanger pressure [bar] | 10 |
| Max. exchanger temperature [deg C] | 95 |
| Connections | ||||
| H | Height | 1907 mm | ||
| ØD | Outer diameter | 600 mm | ||
| Ød | Inner diameter | 500 mm | ||
| H | DN 14 | G 3/4" | P&T safety valve | 1907 mm |
| B | DN 3 | G 1" | Connection inlet/outlet | 1672 mm |
| F | DN 9 | G 1 1/4" | Ø28 mm AISI 316L stainless steel heat exchanger 25 m, inlet/outlet | 1672 mm |
| C | DN 5 | G 3/4" | Sensor pocket (1) (12.7 mm) | 1196 mm |
| P | DN 15 | G 3/4" | Sensor pocket (2) (12.7 mm) | 990 mm |
| L | DN 6 | G 1 1/2" | Electric heating element connection | 910 mm |
| D | DN 7 | G 3/4" | Sensor pocket (3) (12.7 mm) | 810 mm |
| A | DN 4 | G 1" | Connection inlet/outlet | 700 mm |
| E | DN 8 | G 1" | Ø28 mm AISI 316L stainless steel heat exchanger 25 m, inlet/outlet | 700 mm |
| G | DN 2 | G 1/2" | Drain port | 597 mm |
| S | DN 34 | G 3/4" | P&T safety valve | 539 mm |
| J | DN 23 | G 1" | Connection inlet/outlet | 329 mm |
| N | DN 29 | G 1" | Connection inlet/outlet | 329 mm |
| R | DN 25 | G 3/4" | Sensor pocket (4) (12.7 mm) | 279 mm |
| T | DN 26 | G 1 1/2" | Electric heating element connection | 214 mm |
| I | DN 24 | G 1" | Connection inlet/outlet | 214 mm |
| M | DN 28 | G 1" | Connection inlet/outlet | 214 mm |
| Safety notice |
| The storage vessel must be protected against overpressure at all times. We recommend installing the following safety accessories: - Safety valve and inlet combination - Nexus sanitary expansion vessel - Nexus expansion vessel for heating systems The required expansion vessel capacity must be calculated according to the total system volume and operating conditions. |