Mitsubishi Electric LGH-50RSDC-E User manual

Safety precautions
The following signs indicate that death or serious injury may be caused by failure to heed the precautions described below.
Please read this manual carefully before use for proper and safe use.
Do not attempt to install the product by yourself.
LGH-50RSDC-E (220-240V 50Hz)
Lossnay Energy Recovery Ventilator
Model:
Operating Instructions (For the user)
Air lter
(4 lters)
Lossnay core
Maintenance cover
Control box
Air supply fan
Damper plate
Air exhaust fan
Prohibited
Do not
disassemble
Do not wet
Do not touch
Wet hands prohibited
The instructions
given must be
followed.
Prohibited
The instructions
given must be
followed.
Do not turn the remote controller on or off when flammable
gas has leaked.
(It could catch fire or cause explosion with sparks released from
electric contactor.)
Open windows to ventilate.
Do not modify or disassemble.
(It could cause fire, electric shock or injury.)
Do not apply water to the unit and remote controller.
(Electrical shock can result.)
Do not poke your fingers or sticks into the air intake and outlet
while the product is operating.
(Failure to heed this warning may result in injury.)
Don't operate with wet hands.
(Electrical shock can result.)
Use the specified power supply and voltage.
(Use of incorrect power supply could cause fire or electric shock.)
Make sure the power supply isolator is turned off on the power
distribution panel before starting maintenance.
(It could cause electric shock or injury if it is turned on.)
When any abnormal conditions (burning smell, or others) are
observed, stop operation, turn off the power supply isolator on
the power distribution panel and consult your dealer.
(Continuing operation under such conditions could cause electric
shock, fire, or damage.)
WARNING
Do not place a burning appliance in a place where it is exposed
directly to the wind from Lossnay.
(It could cause an accident as a result of incomplete combustion.)
Don't operate with the “BY-PASS” when heating the room in winter.
(Condensed water may drip from the unit and wet the surface of
ceiling.)
Do not use at a place where exposed to high temperatures (40°C
or higher), naked flames, or in environment with heavy fumes.
(It could cause fire.)
Do not use in an environment such as a chemical factory, where
hazardous gases such as acidic gases, alkaline gases, organic
solvent fumes, paint fumes, or gases containing corrosive
components are generated.
(It could malfunction.)
Securely install parts after maintenance.
(It could cause injury if parts fall.)
Put on gloves during maintenance.
(It could cause injury.)
Make sure the power supply isolator is turned off on the power
distribution panel when Lossnay is not used for a long period
of time.
(It could cause electric shock, power leakage, or fire as a result of
deteriorated insulation.)
This appliance is not be used by children or persons with reduced
physical, sensory or mental capabilities, or lack of experience and
knowledge, unless they have been given supervision or instruction.
Children should be supervised to ensure that they do not play
with the appliance.
CAUTION
Names of the parts
0902874HN5201

2
Damper
Return air
Supply air
Lossnay core
Exhaust air
Fresh air
Fresh air
Lossnay core Damper
Return air
Supply air
Exhaust air
nAUTOMATIC VENTILATION setting
The automatic damper mode automatically provides the correct ventilation for the conditions in the room. The following shows the effect “By-pass”
ventilation will have under various conditions.
1. Reduces cooling load
If the air outside is cooler than the air inside the building during the cooling season (such as early morning or at night), “By-pass” ventilation will draw
in the cooler outside air and reduce the cooling load on the system.
2. Night purge
“By-pass” ventilation can be used to release hot air from inside the building that has accumulated in buildings a business district during the hot
summer season.
3. Office equipment room cooling
During cold season, fresh air can be drawn in and used as is to cool rooms where the temperature has risen due to the use of office equipment.
lIn the case of “By-pass” ventilation, the supply air temperature slightly rises more than the outside air temperature because of the heat
effect around the ducts or the unit motors.
lOperate by 5 fan speed (Lowest speed) during night time, for low noise level, energy saving and preventing to intake water mist of fog
during night.
lOperate by 5 fan speed in foggy day.
Operation
1. Fan speed
nThe wide range of fan speed and the low power consumption
This unit has 5 fan speed settings 110 l/s to 25 l/s, and 14w ultra low power consumption for Lossnay ventilation, thanks of DC blushless motor
technology.
nPower "BY-PASS" mode setting
This unit has 130 l/s extra-high fan speed for "By-pass" ventilation over 5 fan speed.
2. Ventilation setting
nLOSSNAY ENERGY RECOVERY VENTILATE setting
Both fresh air supply and return air pass through the Lossnay cores.
Resulting in total heat exchange. Energy recovery ventilation makes
the fresh air temperature close to the indoor temperature in the winter
and the summer season.
n"BY-PASS" VENTILATE setting
The fresh air passes through the Lossnay cores and the return room
air is exhausted direct. Energy recovery "By-pass" ventilation is
normally operated during the spring/autumn months.
This Lossnay unit is operated by Remote controller. (provided by installer)
Please refer to installer for further information.

3
Vacuum cleaner
Air lter
Vacuum cleaner
(with brush attachment)
Lossnay core
CAUTION
lDo not use the hard nozzle of the vacuum cleaner. It may
damage the exposed surfaces of the Lossnay cores.
lUnder no circumstances should the Lossnay cores be washed in
water.
CAUTION
l Never wash the filters in very hot water and never wash them by
rubbing them.
l Do not dry the filters by exposing them to a flame.
Cleaning the parts
1) Air filters
Use a vacuum cleaner to remove light dust. To remove stubborn
dirt wash in a mild solution of detergent and lukewarm water. (under
40°C)
Maintenance
2) Lossnay cores
Use a vacuum cleaner to suck up the dust and dirt on the exposed
surfaces of the Lossnay cores.
Use a soft brush only to clean exposed surface areas.
Assembly after maintenance
Bearing in mind the following points, assemble the parts following the
sequence for their removal in reverse.
Hinge
Hinge
bracket
Maintenance cover
Maintenance cover
Hinge
Remove all dust and dirt on air filters and Lossnay cores at regular
intervals in order to prevent a deterioration in the Lossnay functions.
Guideline: Clean the air filters once a year.
Clean the Lossnay cores once two year.
(Clean the Lossnay cores once a year If possible.)
(Frequency should be increased depending on the extent of dirt.)
Removing the parts
1) Maintenance cover
1 Pull back the hinged clip. (x3)
2 Open the maintenance cover.
lBe careful not to sandwich the hand.
Air lter
Filter guide
2) Air filters (4 filters)
Remove the air filters, located at the surface of the Lossnay cores, as
below.
Lossnay core
Filters should be set in all side rails of Lossnay cores.

If you hear strange sounds, if no air is blown out or if some other
trouble occurs, switch off the power and contact your dealer. Consult
with your dealer concerning the cost of inspection or repair work.
Consult with your dealer about the after-sales services provided for this
Lossnay product.
After-sales servicing
Specications
*1PB stands for “Power By-pass”.
*2Specifications are in 230V / 50 Hz operation. The unit operation is available with 220-240V / 50 Hz.
* The values given in the table for the noise level reflect the levels measured at a position 1.5 meters immediately below the unit in an anechoic
chamber.
* Noise change or increase may occur because of the Bypass-Automatic function or Automatic fan speed change by timer setting.
* Temperature Exchange efficiency (%) are based on winter condition.
Model Voltage
(v)
Line
frequency
(Hz)
Ventilate setting Fan
speed
Current
(A)
Power
consumption
(W)
Air volume Static pressure Temperature
Exchange
efficiency (%)
Enthalpy Exchange
efficiency (%) Noise
(dB (A) )
Weight
(kg)
(m3/h) (L/S) (mmH2O) (Pa) Heating Cooling
LGH-50RSDC-E 230*250
Lossnay Energy
recovery setting
1 1.17 165 395 110 10.2 100 77.5 71 68 31
46
2 0.67 90 305 85 6.1 60 81.5 75 72.5 26.5
3 0.35 41 215 60 3.1 30 85.5 79 77 21
4 0.20 22 144 40 1.5 15 88 82 80.5 18
5 0.13 14 90 25 0.7 7 90 84 83 18
BY-Pass
Ventilate setting
PB*11.80 265 468 130 13.8 135 - - - 35
1 1.20 164 395 110 10.2 100 - - - 31
2 0.70 90 305 85 6.1 60 - - - 26.5
3 0.35 40 215 60 3.1 30 - - - 21
4 0.20 21 144 40 1.5 15 - - - 18
5 0.13 14 90 25 0.7 7 - - - 18
(1mmH2O=9.80665Pa)