FAQ: Product

How can I save with INstant DHW?

In a conventional installation without a return circuit, the user must open the tap to purge cold water from the pipe until the hot water reaches that point of consumption, thus wasting several liters of drinking water each time he will use hot water.

On the other hand, in the event that this same installation has a return circuit (conventional solution), more than 50% of the energy consumed to heat the water will be wasted due to heat losses and electrical consumption of the pump.

The INstant DHW (IN) system is the only solution on the market that instantly heats stagnant water in the hot water pipe (which gets cold when there is no consumption) avoiding water waste without increasing energy consumption.

Is there any alternative solution on the market to this problem?

The solutions available on the market are based on the control of the usage time of the return circuit in order to reduce energy waste. Some systems detect hot water consumption and activate the return circuit to bring hot water to the point of consumption, other systems activate the pump based on user behavior.

However, none of the systems on the market offers a similar response to the continued use of the return circuit, i.e. it reduces energy consumption at the expense of a reduction in comfort, and for this reason this highly inefficient practice continues to be used on a recurring basis.

The INstant DHW provides hot water instantly without using the recirculation pump, presenting the same response as a continuous use return circuit, but without the energy waste of this type of solution.

What constitutes the INstant DHW system?

The INstand DHW system integrates a central control unit (Master) installed next to the heating point and an IN+LFC thermal battery installed in each of the compartments served by hot water.

The system can also be supplemented with a drive that shares the usage data on a web platform that is exclusive to the user.

How do you install this system?

The IN system requires the installation in the construction phase of the thermal battery IN + LFC at the points served by hot water, within the wall or in a technical area of the compartment.

As it does not require maintenance th IN thermal battery may be inaccessible inside the wall. The LFC module has an outer cover in case it is necessary to replace the temperature sensors, electrovalve or control unit.

In addition to the system components, it is also necessary to install the return tube and a communication cable that will connect the LFC controllers to the central system.

What kind of information can I take from the study you propose?

The DHW Audit tool presents a simplified analysis of the DHW distribution network providing the hot water waiting times in each compartment, i.e. you will know in the design phase how long you will have to wait for the hot water in each compartment.

In addition to the response times you will also know how much water you will waste in case you do not use return circuit and how much energy wasted in the case of using return circuit.

We will also present a suggestion of the appropriate IN system with indication of the points of consumption where we recommend the installation of the thermal battery and an analysis of the return of investment based on the proposed solution.

FAQ: Technology

What is the basic principle of the IN thermal batteries?

IN thermal batteries combine the thermodynamic characteristics of a specific material (Phase Change Material) with a uniquely characteristic heat exchanger and patented geometry.

The ability to accumulate heat at constant temperature allows to use the thermal battery to instantly heat the water, which gets cold in the pipe when there is no consumption, then replacing this heat only with the use of hot water.

How do IN batteries work?

IN batteries are installed in each compartment supplied with sanitary hot water to heat the stagnant water in the pipes until hot water arrives.

During this phase the phase change material (initially in the liquid state) will change state releasing heat and instantly heating the water. As the heat accumulates at a constant temperature hot water is supplied to the mixer at a temperature between 42 and 45ºC.

Where does the accumulated heat come from?

At the time of hot water arrival, the phase change process is reversed and the material begins to pass from solid state to liquid state, taking advantage of the temperature of hot water supply that is at this time higher than the phase change temperature of the material.

The accumulation of heat is imperceptible because it happens only in the range above 45ºC, that is, hot water is always supplied to the mixer above 45ºC.

In case the consumption time does not ensure the complete replacement of heat, the system communicates with the central unit to request support to the recirculation circuit for a brief moment.

Are IN thermal batteries connected to electricity?

No, the IN thermal battery is not connected to electricity or any additional source of energy using only the hot water flow during the bath to reset the heat.

The LFC (water box) module includes an electrovalve and a controller with an electrical consumption of less than 0.2W (annual energy cost less than 0,40€).

What is the life cycle of IN thermal batteries?

Heat accumulation/release is based on a stable, fully reversible physical phenomenon that does not show any type of thermal degradation during the life of the equipment.

The thermal performance of IN batteries has a 25-year warranty.