Hydrotank is the indoor hydronic module for underfloor installation of the Ecodan line, equipped with a 170, 200 or 300 liter stainless steel sanitary storage tank. Hydrotank is particularly compact and contains inside all the main components of the primary plumbing system and DHW production.

Care has been taken in the smallest details, in fact Hydrotank:

• has a simple, modern and elegant design;
• has small dimensions that allow installation even in small niches, closets, etc. ...;
• has adjustable support feet;
• makes maintenance easier, because all major components can be reached by simply removing the front panel;
• moves more easily, thanks to the lower handle;
• it can be transported even in small vans, thanks to its compact size and the fact that it can also be laid flat.

In addition to being a simple and practical solution, Hydrobox gives great flexibility in the choice of outdoor unit.

To the "Split" systems, an outdoor unit from the "Zubadan" serie can be connected to prioritize performance at low temperatures, from the "Ecodan" serie, characterized by the widest range extension or from "multi" systems which combinate water solutions comfort with air solutions benefits.

E-Gen hydronic modules are equipped with a magnetic filter to produce the main components of the heat pump.

Thanks to the use of a high-capacity magnet, they are able to retain 2.5 times particles in comparison with an equivalent mesh filter.

Thanks to the combination of the plate heat exchanger and the unique "Scale Trap" filter, the performance of the ACS cycle remains unchanged over time.

In traditional systems there is a risk that calcium, precipitating, will settle inside the exchanger, reducing its exchange surface area. The Hydrotank is equipped with the unique "Scale Trap" filter that evenly captures precipitated calcium before it has a chance to settle in the exchanger. This keeps heat exchange unaffected, ensuring high performance for domestic hot water production.

For each specific outdoor unit, it is necessary to ensure a minimum volume of system water, which Ecodan and Zubadan split units, for installations in areas with climates that are not too harsh, is less than 1 liter per kW of outdoor unit capacity. This implies that, in many cases, it will not be necessary to provide an inertial volume to meet the minimum required volume.

Inside the reversible Hydrotank units there is space for the condensate collection tray. The unit is prepared with a drainage pipe with drainage at the rear.

Plumbing connections are now aligned and spaced, and 1-inch female threaded nuts facilitate installation work. It is recommended that disconnecting valves be used for maintenance.

The hydronic modules are equipped with an electronic control unit for heat pump and system management called FTC - Flow Temperature Control.

Thanks to FTC, the heat pump can be programmed to provide maximum comfort at maximum efficiency and optimized according to the system.

FTC can adjust the heating water temperature in 3 ways:

• fixed point;
• compensation curve;
• dynamic self-adaptive mode.

Clearing curve

Water temperature varies according to the outdoor temperature detected by the heat pump, without the need for additional probes.

FTC7 also has compensation curve for summer cooling: water temperature is dynamically controlled according to outdoor temperature, preventing the production of excessive cooling while maximizing energy efficiency.

Dynamic self-adaptive mode

Mitsubishi Electric's self-adaptive mode detects the temperature of the indoor and outdoor environment and calculates the heat demand to be supplied to the room, ensuring the correct energy supply while avoiding energy waste. In addition, through dynamic estimation on future trends in room temperature, the system avoids unnecessary increases in the supply temperature; the indoor temperature can thus be kept stable, increasing comfort and energy savings.

The dynamic self-adaptive mode represents a further step forward in comfort and efficiency. In fact, it is possible to select the reaction time so that the heat pump can be adapted to the system terminals: for example, for terminals with high inertia such as radiant systems, the selection of "slow mode" allows the comfort temperature to be reached more gradually, avoiding overheating of the room. Conversely with the selection of "quick mode" for terminals such as radiators, it allows the comfort temperature to be reached more quickly.

In the case of system consisting of different terminals, e.g., radiant floor and radiators, FTC will effectively regulate water temperature to enable proper terminal supply. The heat pump will produce water at the highest supply temperature (Zone 1) and an FTC-controlled mixing valve will regulate the temperature in Zone 2 at a lower temperature.

It is also possible to control by mixing valve Zone 1, an ideal solution in case of inertial puffer and Smart Grid, giving priority to the heat stored in the puffer.

New two-zone control kit.

The new kit is complete with all components to service two thermal zones, one direct high-temperature and one mixed low-temperature, as well as having 3 selectable circulation pump speeds. It has compact dimensions and is easy to install-a small-sized box that can be installed on the Hydrotank or hung on the wall for connection to the Hydrobox.

With the aim of preventing the dew point from being reached, FTC7 E-Gen activates limit temperature control via an external input (dry contact).

With the contact closed, the water set point is forced to a higher value that can be set on the control. In this way, the heat pump will continue to produce and circulate chilled water in the terminals, avoiding surface condensation.

Receiving a clean signal on input IN13 will now allow switching from heating mode to cooling mode.

The DHW production does not vary, and the local thermostat can be used to control the on/off of the heat pump.

Thanks to the use of an additional probe in the tank, it is now possible to adapt the operation of DHW cycles according to consumption.

DWH Rank: the energy class shown in the table refers to a from A+ to F scale.

The FTC controller can combine heat pump operation with an existing boiler. The choice of which heat generation to use is made automatically according to the following settable parameters:

• Outdoor temperature
• Operating costs (insert gas and electricity cost)
• Carbon emission level (enter values of CO2 emitted)
• External input In addition, in case of emergency, the boiler can be operated as a back-up generator.

For high heat load requirements in heating and/or cooling, up to 6 Ecodan units can be connected in cascade. The system is managed by a master control unit and always operates at optimum efficiency even at part loads.

Dedicated tool for Ecodan systems to enter operation settings and make startup easier. In addition, operation data of more than 2 months are stored in the micro SD card of the data logger and can be used for diagnostic purposes with the use of a pc and dedicated software.

The new remote control provided on E-Gen hydronic modules shows all information in one screen.

The display with colored icons is intuitive and easy to set up.

The FTC7 controls on board E-Gen modules are intuitive, as simple as using a smartphone.

The new E-Gen modules have a new guided setting mode. By simply selecting system terminals, FTC7 will adjust key parameters to optimize heat pump operation.

Ecodan's new wireless thermostat enables accurate control of indoor temperature and transmit to FTC so as to optimize heat pump operation with self-adaptive mode.

Through the wireless thermostat, it will also be possible to force ACS operation.