THSR-D 250 AE

DEHUMIDIFIERS WITH RECUPERATOR


The THSR-D250AE dehumidifier has been designed to be installed in suspended ceilings.

It is fitted with two very low power consumption EC ventilators and a system for switching between renewal and recirculation with motorised shutters, which makes it possible to satisfy all the needs of a home while maximising energy savings.

The THSR-D250AE makes it possible to achieve a renewal efficiency of over 90%.

When commissioning it is also possible to set the actual treated airflow by changing the factory settings with a keypad and display on the machine and by optimising airflows according to the rooms served.

They work in five ways:

  • Dehumidification
  • Ventilation
  • Integration
  • Renewal
  • Stand-by
 

MODEL THP-D250
Condensate humidity (26°-65%) l/day 26
Input power W 230
Cooling capacity W 620
Latent input power W 760
Supply V/Ph/Hz 230/1/50
Maximum power input W 290
Water flow rate (15°C) l/h 240
Refrigerator Input power W 1110
Load loss kPa 5
Air flow rate m3/h 150÷300
Maximum head 400
Refrigerant (R134a) gr 110
Sound power level (renewal) dB(A) 44
Sound pressure level dB(A) 36
Outer machine dimensions
Height mm 244
Width mm 765
Depth mm 1165

PERFORMANCE ACCORDING TO ROOM TEMPERATURE, RELATIVE HUMIDITY AND CHILLED WATER TEMPERATURE

THS-D450AE 
Room temperature: 26° C
Litres / Day Relative humidity
55% 65%
T water 18 17,10 20,7
15 21,4 26,3
12 25,4 31,5
Room temperature: 24° C
Litres / Day Relative humidity
55% 65%
T water 18 10,80 13,10
15 13,5 16,60
12 16,00 19,90

OPERATING LOGICS
The combination of the recuperators  and the dehumidifer makes it possile to meet both the dehumidification requirements during the summer and the possibility to integrate more or less sensible heat according to which model of dehumidifer you wish to install. All in conjunction with the possibility of renewing the air in the various rooms, if required.

BATHROOM RENEWAL ON REQUEST
When the contact of the occupant presence sensor in the bathrooms closes, priority is given to extracting the stale air from these rooms and replacing it with clean outside air being introduced to every room. To reduce the energy required to bring the temperature of the external air to the required conditions, a high-efficiency cross flow recuperator is used, which by making use of the energy from the stale air, is able to pre-treat and reduce the difference in heat of the renewal air. The low-consumption, high-head EC fan expels the stale air that is exhausted with force at the outlet of the heat recuperator.

RECIRCULATION
When the indoor air is of good quality but with a very high level of humidity or the external conditions are much worse than internal ones, it is possible to treat the air during recirculation to make the various rooms comfortable without excessive energy consumption. If the problem is related to a different temperature distribution in the various rooms due to occasional heat sources such as solar irradiation, is possible to enable ventilation
only and the unit will re-establish the same level in all rooms. If, especially in winter, you have to integrate or simply increase the speed at which the various rooms are heated, ventilation can be enabled in recirculation mode and hot water circulated in the pre-treatment coil to integrate sensible heat. In summer, the integration can also be combined with dehumidification.

RENEWAL AND RECIRCOLATION
When the air quality falls below the comfort level, the renewal function is activated in which, together with the recirculated air, an amount of clean outside air is introduced to restore optimum levels of air quality. In this case too, in order reduce the energy required to bring the temperature of the outside air to the required conditions, a High-Efficiency cross flow recuperator is used which, by making use of the energy of the stale air, is able to pre-treat and reduce the difference in heat of the renewal air. The low-consumption, high-head EC fan sees to the expulsion of the stale air that is exhausted energetically at the output of the heat recuperator.

FREECOOLING
If the temperature of the outside air during the renewal phase is better than that of the indoor air, according to the season, an inlet is opened that allows the air to bypass the recuperator and go directly to the air treatment zone, thereby reducing ventilation costs and taking advantage of the better characteristics of the air that have been detected and introducing it directly into the environment.

In this situation it is no longer important to extract the air through the recuperator and it is optional unless there is a specific need to do so, such as request from an occupant presence sensor in the bathroom: by switching off the extractor fan and by introducing the renewal air, the rooms become slightly overpressured, which facilitates the escape of air from various points such as doors or extractor hoods as well as from the usual route via the recuperator.

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