Specifications

The OA Processing Unit is equipped with a new permeable film humidifier
developed and patented by Mitsubishi Electric. Steam transmission efficiency
has been improved remarkably by lowering the resistance of the material. The
use of a 3-layer film that allows only the transfer of steam prevents the
production of white powder, so there is no need for the use of a water purifier.
The OA (outdoor-air) Processing Unit creates an optimum indoor-air environment at an unparalleled rate of cost
efficiency providing substantial energy savings. Forced air ventilating and humidifying functions unique to this system
keep indoor-air fresh and free of contaminants preventing “sick building syndrome” and the spread of airborne viruses
such as the flu. Another novel feature of the OA Processing Unit is the “Lossnay core,” a heat-exchange unit that
functions to transfer heat efficiently, cutting ventilation load by as much as 70%. This special combination of functionality
and performance designed to ensure users ample comfort and year-round health which cannot be found anywhere else
on the market.
New Permeable Film Humidifier (RDH3 model)
Outdoor
air
Ultra-water
repellant
cell-based
water-vapor
transmission
filter
Water
Ultra-water
repellant
cell-based
water-vapor
transmission
filter
Water
Steam
New filter
3-dimensional
cloth
Spacer
Humidified air
OA Processing
Units
Comfortable Level of Humidity for Exceptionable
Air Quality
Improvements in the system of airflow patterns and water injection techniques
have resulted in a substantial increase in humidifying volume.
Highly Efficient Humidification
Ideal Indoor-Air Quality — For Your Comfort and Health
OA
(
Outdoor air
)
Fresh, outdoor-air in a quantity
required for ventilation is drawn
in by the supply fan.
Heat recovery unit
(Lossnay Core)
Temperature and humidity are
exchanged between the supply
air and the exhaust air.
Air filter
Prevents clogs in
the Lossnay Core.
DX Heat exchanger
Cools or heats the drawn
in outdoor-air.
SA (Supply air)
The processed, fresh outdoor-air
is vented to the indoor rooms.
RA (Return air)
The exhaust fan draws
in contaminated indoor-air.
Permeable-film humidifier
Humidifies the drawn in outdoor-air as is necessary
to produce a comfortable indoor environment.
EA
(
Exhaust air
)
Heat from the indoor air (both sensible
and latent) is recovered by the Lossnay
Core and vented outside by the
exhaust fan.
The exhaust fan
High efficiency filters (Option)
The supply fan
Maintenance cover
RDH3 Series
Along with Lossnay ventilation, the OA Processing
Unit is really two units in one, functioning as the
main air conditioner when the load is light and
adding supplemental air conditioning when the
load is heavy. Also, with ventilation and air
conditioning integrated, space is saved and
installation expense kept to a minimum. Wha'ts
more, the air temperature in any room can be
perfectly adjusted to the desired
temperature of the occupants via the OA Processing Unit, which can be used as the indoor unit of the CITY MULTI air
conditioning system. The heat recovery function maximizes efficiency and saves energy, benefiting the environment and
helping companies cut costs. It also reduces the refrigerant load and lowers the amount of horsepower required by the
Lossnay Ventilation and Air Conditioning
1. When the load is light Main air conditioning
2. When the load is heavy Supplemental air conditioning
The OA (outdoor-air) Processing Unit creates an optimum environment while providing substantial energy savings. The
OA Processing Unit comprises forced air ventilation, heat recovery, heating and cooling, and air purification. This total air
conditioning system keeps indoor air fresh and comfortable all year round, and keeps it free of contaminants preventing
ailments such as sick building syndrome. Inside the OA Processing Unit is the Lossnay Core, a heat-exchange unit that
transfers heat efficiently, cutting ventilation load by as much as 70%. A remarkable product found nowhere else, this
special combination of functionality and performance contained within a single unit ensures users ample comfort, good
health, and energy savings.
The Air Conditioning Function
Air filter
Prevents clogs in
the Lossnay Core.
DX Heat exchanger
Cools or heats the drawn
in outdoor-air.
SA (Supply air)
The processed, fresh
outdoor-air is vented
to the indoor rooms.
RA (Return air)
The exhaust
fan draws in
contaminated
indoor-air.
EA
(
Exhaust air
)
Heat from the indoor air (both sensible
and latent) is recovered by the Lossnay
Core and vented outside by the
exhaust fan.
The exhaust fan
High efficiency filters (Option)
The supply fan
Maintenance cover
OA
(
Outdoor air
)
Fresh, outdoor-air in a quantity
required for ventilation is drawn
in by the supply fan.
Heat recovery unit
(Lossnay Core)
Temperature and humidity are
exchanged between the supply
air and the exhaust air.
Two Units in One
A Total Air Conditioning Package Manifesting Remarkable Power
RD3 Series
Temperature simulation
(
Example : GUF-50RD3
)
SummerWinter
Lossnay Core
DX coil
Fresh warm air
(indoor supply air)
Stale warm air (indoor air)
Stale hot air
(exhaust)
Fresh cool air
(outdoor air)
GUF-50RD3
42.6°C
(500m
3
/h)
21.0°C
10.2°C
7.0°C
Lossnay Core
DX coil
Fresh cool air
(indoor supply air)
Stale cool air (indoor air)
Stale cool air
(exhaust)
Fresh hot air
(outdoor air)
GUF-50RD3
15.8°C
(500m
3
/h)
27.0°C
33.2°C
35.0°C