Tml WP2X00800R Kettle lt. 800 in AISI 316L stainless steel for heat pump with two fixed coil heat exchangers rigid insulation

Heat Pump DHW Storage Tank 749 Litres in AISI 316L Stainless Steel – WP2X00800R

The WP2X00800R is a vertical domestic hot water (DHW) storage tank with a capacity of 749 litres, manufactured in AISI 316L stainless steel (1.4404) by TML Industrie Loddo and specifically designed for DHW production and storage with heat pump systems. Equipped with a fixed double parallel spiral coil heat exchanger offering 2.0 m² of exchange surface, it delivers outstanding thermal performance even at the low primary temperatures typical of heat pump operation.

Technical Specifications – WP2X00800R

• Tank material: AISI 316L stainless steel (1.4404) – Pickling and passivation inside and out
• Max pressure / Max temperature (domestic side): 6 bar / 95°C
• Actual capacity: 749 litres
• Lower heat exchanger (heat pump): 2.0 m² – Fixed double parallel spiral coil – max 10 bar / 95°C
• Upper heat exchanger (solar): 5.2 m² – Fixed double spiral coil – max 10 bar / 95°C
• Cathodic protection: Replaceable magnesium anode
• Insulation: Rigid PU foam + PVC, thickness 100 mm (Fire class B3 DIN 4102)
• ErP: Class C – Heat loss: 106.6 W
• Dimensions: Ø 790 mm × Height 1750 mm
• Weight: 179 kg
• Electric heater connection: 1½" fitting (heater not included)
• Warranty: 5 years

Double Parallel Spiral Coil Technology – The Competitive Advantage

The double parallel spiral coil maximises the contact surface in the coldest zones of the tank, reducing heat pump start/stop cycles and extending system lifespan. This proprietary technology significantly reduces the number of heat pump start/stop cycles, extending its service life and improving the overall coefficient of performance (COP) of the system.

Applications and Compatibility

Ideal for hybrid systems combining a heat pump with solar thermal. The lower coil is dedicated to the heat pump, the upper to the solar collector, optimising overall system efficiency. Pre-fitted for DHW recirculation, temperature sensor, thermostat, and electric backup heater to ensure continuous service even when the primary source is unavailable.

Standards and Certifications

The WP2X00800R complies with: PED Directive 2014/68/EU (Art. 4 Par. 3 – pressure equipment), Italian D.M. 6 April 2004 N.174 (material suitability for contact with drinking water), ErP Directive 2009/125/EC (energy-related products).