Mecalia DPI/DI Stainless Steel Inertia Tank 100 Liters

The Mecalia DPI/DI 100-liter buffer tank, reference 02704, is designed to store cold or hot water from the primary circuit in heating and HVAC installations. It is made of AISI 304 stainless steel, includes thermal insulation, and is intended for vertical floor-standing installation.

With a maximum working pressure of 6 bar and a temperature range between -10 and 90 degrees Celsius, this tank increases the available water volume in the circuit and helps ensure more stable operation in systems with heat pumps, boilers, solar energy, or chilled water production equipment.

100-liter buffer tank for heating and HVAC

The Mecalia DPI/DI 100 acts as an accumulation volume within the primary circuit of the installation. Its function is to store thermal energy in the form of hot or cold water and provide a reserve that can be used when the system requires it.

Adding a buffer tank can help increase the available hydraulic volume and stabilize system operation, especially in HVAC and heating systems that work with generators such as heat pumps, boilers, or solar systems.

Made of AISI 304 stainless steel

The tank body is made of AISI 304 stainless steel, providing a durable construction for use with primary circuit water.

Mecalia specifies this model for use exclusively in closed circuits. The tank is not designed for direct storage of domestic hot water, so it must be used only within the hydraulic applications indicated by the manufacturer.

Suitable for cold and hot water

The tank can be used with both hot and cold water from the primary circuit. Its operating temperature range is between -10 and 90 degrees Celsius, allowing it to be integrated into different heating and cooling configurations.

Applications indicated by Mecalia include HVAC installations with water chillers, solar energy systems, heat pumps, and boilers.

6-bar working pressure

The Mecalia DPI/DI 100 is designed to operate at a maximum pressure of 6 bar. The installation must always include the appropriate hydraulic protection devices, and Mecalia expressly indicates the need to install safety valves.

The pressure, temperature, and hydraulic configuration of the installation must remain within the limits established by the manufacturer.

Polyurethane thermal insulation

The tank incorporates injected rigid polyurethane foam thermal insulation, with a declared thermal conductivity of 0.022 watts per meter and degree Celsius and a density between 45 and 50 kilograms per cubic meter.

The foam used is HCFC-free and reduces heat exchange between the stored water and the surrounding environment, helping to preserve the circuit temperature for longer.

The exterior finish is made with semi-rigid PVC or polyester cladding depending on the tank capacity.

Vertical floor-standing installation

The DPI/DI 100 is designed for a vertical floor-standing installation. The tank includes feet at the bottom to provide a stable base and keep the outer shell separated from the installation surface.

Its vertical format makes it possible to concentrate the 100-liter capacity in a reduced footprint, making it easier to integrate into technical rooms and spaces intended for heating and HVAC equipment.

Four main threaded connections

The DPI/DI tanks up to 500 liters include four main female-threaded connections. In the 100-liter model, the main connections for heating and cooling circuits are 1 1/2 inches.

These connections allow the tank to be configured as an accumulation and hydraulic integration element between the generator and the consumer circuits.

Mecalia DPI/DI 100 connections

• Vent: half-inch connection.
• Safety valve: half-inch connection.
• Heating circuit outlet: 1 1/2-inch connection.
• Cooling circuit outlet: 1 1/2-inch connection.
• Drain: three-quarter-inch connection.
• Inlet from chiller or boiler return: 1 1/2-inch connection.
• Thermometer connection: half-inch connection.
• Inlet from boiler or chiller return: 1 1/2-inch connection.

Prepared for different hydraulic configurations

The connection layout allows the tank to be used with equipment designed to produce both heat and cold. Mecalia identifies specific ports for the inlet from boiler, boiler return, inlet from chiller, chiller return, and outlets to the consumer circuits.

It also includes independent connections for venting, draining, safety valve, and thermometer, making it easier to integrate the auxiliary components required in the installation.

Compact dimensions for 100 liters of capacity

The DPI/DI 100 model has an approximate outer diameter of 520 millimeters and a total height of 963 millimeters.

The cylindrical body has an indicated usable height of 600 millimeters, and the unit has an approximate weight of 26 kilograms.

These dimensions make it easier to plan the space required in the technical room and should be taken into account to ensure proper access during installation and maintenance.

Applications with heat pump and aerothermal systems

Among the applications indicated by Mecalia is heating or cooling through a heat pump. Therefore, the DPI/DI 100 can be integrated as a buffer tank in compatible aerothermal installations that require an increased primary circuit water volume.

The tank sizing must be carried out according to the hydraulic needs of the system and the instructions of the heat pump manufacturer or the installed generator.

Use with boilers, solar energy, and chillers

In addition to heat pumps, Mecalia also considers the DPI/DI range suitable for use with boilers, solar energy systems, and water chillers.

The tank can act as a thermal energy storage element to adapt generator output to circuit demand, both in heating and cooling applications.

Technical features of the Mecalia DPI/DI 100

• Brand: Mecalia.
• Reference: 02704.
• Model: DPI/DI 100.
• Product type: buffer tank.
• Capacity: 100 liters.
• Material: AISI 304 stainless steel.
• Application: hot or cold primary circuit water.
• Use: heating and HVAC.
• Operation: closed circuit.
• Suitable for domestic hot water: no.
• Maximum working pressure: 6 bar.
• Working temperature: between -10 and 90 degrees Celsius.
• Installation: vertical floor-standing.
• Outer diameter: 520 millimeters.
• Total height: 963 millimeters.
• Body height indicated by the manufacturer: 600 millimeters.
• Weight: approximately 26 kilograms.
• Main connections: 1 1/2-inch female thread.
• Vent connection: half inch.
• Safety valve connection: half inch.
• Drain connection: three-quarter inch.
• Thermometer connection: half inch.
• Insulation: injected rigid polyurethane foam.
• Thermal conductivity of insulation: 0.022 watts per meter and degree Celsius.
• Insulation density: between 45 and 50 kilograms per cubic meter.
• HCFC-free insulation: yes.
• Compatible heat sources: heat pump, boiler, solar energy, and water chiller.

Stainless steel buffer tank to stabilize the primary circuit

The Mecalia DPI/DI 100 offers a 100-liter capacity in an AISI 304 stainless steel tank designed to work with both hot and cold water. Its thermal insulation, 6-bar working pressure, and multiple connections allow it to be integrated into a wide variety of heating and HVAC systems.

Its compatibility with heat pumps, boilers, solar energy, and chillers makes it especially useful as an accumulation volume in installations where greater thermal inertia and more stable hydraulic operation are required, always within a closed circuit and without direct use for domestic hot water.