Mecalia DPI/DIM 100-Liter Wall-Mounted Buffer Tank

The Mecalia DPI/DIM wall-mounted buffer tank 100 liters, reference 08211, is designed for the storage of cold or hot water in closed primary circuits for heating and air conditioning systems. Made of AISI 304 stainless steel, it offers a 100-liter capacity, a working pressure of 6 bar, and a vertical wall-mounted format that makes it easy to integrate into installations where better use of available space is required.

This buffer tank can operate in systems powered by a heat pump, solar energy, or boiler, acting as a storage volume within the primary circuit. It is especially useful in heating and hydronic cooling systems that require an additional water volume in the installation.

Important: this tank is intended exclusively for closed primary circuits and is not suitable for domestic hot water (DHW) storage.

100-liter wall-mounted buffer tank

The Mecalia DPI/DIM 100 has a nominal capacity of 100 liters and belongs to the manufacturer’s wall-mounted range of stainless steel buffer tanks.

Its wall-mounted configuration allows the tank to be installed vertically on a wall, reducing the floor space occupied. This feature is especially interesting in technical rooms, plant rooms, and other spaces where it is necessary to optimize the available area.

According to the official Mecalia 2025 price list, this reference has dimensions of 530 mm in diameter and 883 mm in height.

Made of AISI 304 stainless steel

The tank body is made of AISI 304 stainless steel, a material used by Mecalia in this range of tanks designed for closed heating and air conditioning circuits.

The tank is prepared to store primary circuit water in both heating and cooling installations, providing a durable solution for hydronic HVAC systems.

For heat pump installations

The Mecalia DPI/DIM buffer tank can be used in aerothermal and heat pump installations to increase the water volume available in the primary circuit.

Adding a buffer tank provides a thermal reserve within the hydraulic circuit and facilitates integration between the generator and the different emitters in the installation.

Its 100-liter capacity makes it suitable for installations where the water volume already present in pipes and emitters needs to be supplemented with additional storage.

Suitable for heating and cooling

The tank is not limited to heating installations only. Mecalia designs it for the storage, heating, or cooling of primary circuit water, so it can be part of reversible systems capable of providing heating and cooling.

Its applications include hydronic systems powered by:

• Heat pump.
• Solar energy.
• Boiler.
• Chilled water production equipment.
• Water-based heating and air conditioning systems.

Working pressure of 6 bar

The Mecalia DPI/DIM 100 is designed for a maximum working pressure of 6 bar, a value specified by the manufacturer for the AISI 304 stainless steel buffer tank range.

This service pressure allows it to be used in a wide variety of closed hydronic heating and air conditioning circuits, always respecting the design parameters of the installation.

Mecalia expressly indicates that the corresponding safety valves must be installed on this type of tank.

Operating temperature from -10 to 90 °C

The AISI 304 stainless steel buffer tank range is designed to operate at temperatures ranging approximately from -10 to 90 °C.

This wide range makes it possible to use the tank with hot water for heating as well as cold water in air conditioning and hydronic cooling systems.

When the installation operates at temperatures below 0 °C, the characteristics and concentration of the fluid used must be adjusted to the technical requirements of the complete system.

Polyurethane thermal insulation

The tank includes injected rigid polyurethane foam thermal insulation, developed to limit heat exchange between the stored water and the surrounding environment.

Mecalia specifies for this range an insulation with an approximate thermal conductivity of λ = 0.022 W/m·°C and a density of 45 to 50 kg/m³. The foam used is HCFC-free.

The insulation is especially important in both heating and cooling installations, as it helps preserve the temperature of the water stored in the tank for longer.

Threaded connections for easy hydraulic integration

Mecalia tanks in this range with capacities up to 500 liters include four female threaded connections for integration into the hydraulic circuit.

These connections make it possible to configure the tank within different heating and air conditioning hydraulic layouts depending on the needs of the generator, circulation pumps, and distribution circuits.

Especially suitable for closed primary circuits

The Mecalia DPI/DIM 100 is designed to work with the technical water of the installation’s primary circuit. Therefore, its function is different from that of a storage tank or indirect water heater intended to produce or store domestic hot water.

The manufacturer expressly states that this model operates in a closed circuit and is not suitable for DHW. It must not be used as a storage tank for water intended for human consumption.

Applications of the Mecalia DPI/DIM buffer tank

Thanks to its stainless steel construction, 100-liter capacity, and wall-mounted installation, this tank can be integrated into different types of hydronic systems.

• Aerothermal and heat pump installations.
• Water heating circuits.
• Hydronic cooling and air conditioning installations.
• Systems with water chillers.
• Thermal installations powered by a boiler.
• Solar energy systems with a primary storage circuit.
• Installations that need to increase the water volume of the circuit.

Technical specifications of Mecalia 08211

• Brand: Mecalia.
• Reference: 08211.
• Model: DPI/DIM 100.
• Type: buffer tank.
• Installation: vertical wall-mounted.
• Capacity: 100 liters.
• Material: AISI 304 stainless steel.
• Application: cold or hot primary circuit water.
• Operation: closed circuit.
• Suitable for DHW: no.
• Working pressure: 6 bar.
• Operating temperature: from -10 to 90 °C.
• Diameter: 530 mm.
• Height: 883 mm.
• Hydraulic connections: four female threaded connections.
• Insulation: injected rigid polyurethane foam.
• Thermal conductivity of insulation: λ = 0.022 W/m·°C.
• Insulation density: 45-50 kg/m³.
• HCFC-free insulation: yes.
• Compatible with heat pump: yes.
• Compatible with boiler: yes.
• Compatible with solar energy systems: yes.
• Suitable for cooling circuits: yes.

Wall-mounted format to optimize available space

Compared with DPI/DI models designed for floor installation, the DPI/DIM 100 is specifically designed by Mecalia for wall-mounted installation. This configuration frees up floor space in the technical room and makes it easier to integrate into installations with limited space.

With its 100-liter capacity, 530 mm diameter, and 883 mm height, it offers a considerable inertia volume while maintaining suitable dimensions for wall mounting.

Buffer tank for aerothermal systems and HVAC

The Mecalia DPI/DIM 100-liter wall-mounted buffer tank is a solution designed for professional and residential installations that need to increase the water volume of a closed heating or cooling circuit.

Its construction in AISI 304 stainless steel, 6 bar working pressure, polyurethane thermal insulation, and ability to operate with a heat pump, solar energy, or boiler make it suitable for integration into a wide variety of thermal installations.

Its wall-mounted configuration also provides an important advantage in technical rooms with limited space, allowing 100 liters of inertia storage without taking up useful floor area.