Mitsubishi Electric LGH-15RVX-E User manual

Eng-1
English
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-15RVX-E, LGH-25RVX-E, LGH-35RVX-E
LGH-50RVX-E, LGH-65RVX-E, LGH-80RVX-E
LGH-100RVX-E, LGH-150RVX-E, LGH-200RVX-E
Lossnay Energy Recovery Ventilator
MODELS:
Operating Instructions (For the user)
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.
WARNING
CAUTION
Do not turn the unit on or off when ammable gas
has leaked.
(It could catch re or cause explosion with sparks
released from electric contractor.)
Open windows to ventilate.
Do not modify or disassemble.
(It could cause re, electric shock or injury.)
Do not apply water to the unit and remote controller.
(Electrical shock can result.)
Do not poke your ngers or sticks into the air intake
and outlet while the product is operating.
(Failure to heed this warning may result in injury.)
Do not operate with wet hands.
(Electrical shock can result.)
Use the specied power supply and voltage.
(Use of incorrect power supply could cause re 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, re, or damage.)
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.)
Do not 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 ames, or in
environment with heavy fumes.
(It could cause re.)
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 re as
a result of deteriorated insulation.)
This appliance is not intended for use by persons
(including children) with reduced physical sensory
or mental capabilities, or lack of experience
and knowledge, unless they have been given
supervision or instruction concerning use of the
appliance by a person responsible for their safety.
Children should be supervised to ensure that they
do not play with the appliance.
(This appliance can be used by children aged
from 8 years and above and persons with reduced
physical, sensory or mental capabilities or lack of
experience and knowledge if they have been given
supervision or instruction concerning use of the
appliance in a safe way and understand the hazards
involved. Children shall not play with the appliance.
Cleaning and user maintenance shall not be made
by children without supervision.)

Eng-2
If an external device is
connected the “On/Off”
function of this device,
it will also control the
Lossnay operation.
• If you would like to turn ON the Lossnay
alone while the external device is OFF,
operate it by the Lossnay remote controller.
• The fan speed is on Fan speed 3 or Fan
speed 4.
• The ventilation mode is “Auto Ventilation
Mode”.
Example of System Operation Function
Run using the remote
controller.
• If 2 remote controllers are used, the last
controller to be used has priority. (Last
Command)
Lossnay
Power Supply
Remote Controller
(Optional parts)
(PZ-61DR-E)
Lossnay
Power
Supply
External
device
Power Supply
Operation switch for the external device
Lossnay
Power Supply
Power Supply
Operation switch for the external device
External device
nDisplay and Function button (PZ-61DR-E)
Lossnay can be connected with Lossnay remote controller (PZ-61DR-E), and other Systems (City
Multi, Mr.Slim, Central controller (MELANS) )
Following shows the use of PZ-61DR-E. Please refer to the manuals for the other systems.
For connection of a Lossnay remote controller (PZ-61DR-E)
If the Lossnay’s operation is linked with the operation of an external device such as an air conditioner, the method of use will differ, so carry
out the appropriate operation in accordance with the following table. Also, please see the installation and user manual for the Lossnay
remote controller (PZ-61DR-E).
<Not connected to an external device>
<Connected to an external device>
Operation
Backlit LCD
ON/OFF lamp
F1 F2 F3 F4
MENU
button
RETURN
button
SELECT
button
ON/OFF
button
Function buttons
Remote Controller
(Optional parts)
(PZ-61DR-E)
Names of the parts
Models LGH-15 to 100RVX-E Models LGH-150 and 200RVX-E
Control box
Lossnay core holder
Air lter
Lossnay core
Air supply fan
Maintenance cover
Fix piece
Damper plateAir exhaust fan
Lossnay core holder
Air lter
Lossnay core
Maintenance cover
Control box
Air supply fan
Damper plate
Air exhaust fan
Fix piece

Eng-3
English
3) Air lters
After pulling out the Lossnay cores, undo lter guides, then
remove the air lters, located at the bottom left and right of the
Lossnay cores, as below.
Model LGH-15RVX-E: 1 core, 2 lters
Models LGH-25 to 100RVX-E: 2 cores, 4 lters
Models LGH-150 and 200RVX-E: 4 cores, 8 lters
CAUTION
lBow lter stoppers a little to remove them from lter guide.
lTake lter stoppers careful not to break them.
Maintenance
Models LGH-15 to 100RVX-E Models LGH-150 and 200RVX-E
Lossnay core
Handle Handle
Lossnay
core
Main unit
Fix piece
Maintenance cover
Black screw
Hinge wire
Air lter
Main unit
Air lter
Filter stopper
Filter guide
Vacuum cleaner
Air lter
CAUTION
lNever wash the lters in very hot water and never wash them
by rubbing them.
lDo not dry the lters by exposing them to a ame.
Cleaning the parts
1) Air lters
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)
2) Lossnay cores
Take hold of the handle and draw the Lossnay cores out from the
main unit.
Remove all dust and dirt on air lters and Lossnay cores at regular
intervals in order to prevent a deterioration in the Lossnay functions.
Guideline: Clean the air lters once a year.
(or when are indicated on the remote controller)
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. Remove the black screw.
2. Slide the x piece to out side.
3. Open hinge wire.
Models LGH-150 and 200RVX-E have 2 x pieces.
nAUTOMATIC VENTILATION setting
The automatic ventilation 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. Ofce 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
ofce equipment.
CAUTION
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When set to auto ventilation mode while using the pre-heater
function, the outdoor temperature may be detected as higher
and the mode may change to by-pass mode, even in winter.
Exhaust air
Fresh air
Lossnay core
Damper
Return air
Supply air
Exhaust air
Fresh air
Lossnay core
Damper
Return air
Supply air
Return air
Supply air
Exhaust air
Fresh air
nBY-PASS VENTILATE setting
The fresh air passes through the Lossnay cores and the return
room air is exhausted direct. Lossnay By-pass ventilate is normally
operated during the spring/autumn season.
Models LGH-15 to 100RVX-E Models LGH-150 and 200RVX-E
Fresh air
Exhaust air
Lossnay core
Damper
Return air
Damper
Return air
Supply air
Supply air
Lossnay core
Exhaust air
Fresh air Fresh air
Exhaust air Return air
Supply air
nLOSSNAY ENERGY RECOVERY VENTILATE
setting
Both fresh air supply and return air pass through the energy
recovery cores. Energy recovery ventilation makes the fresh air
temperature close to the indoor temperature in the winter and the
summer season.
Models LGH-15 to 100RVX-E Models LGH-150 and 200RVX-E
Operation (continued)

Eng-4
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
Model name Running current
(A)
Input power
(W)
Air volume Static pressure Exchange efciency (%) Noise (dB)
Weight
(kg)
(m3/h) (L/S) (Pa) Temperature Enthalpy Below the unit
Heating Cooling
LGH-15RVX-E 0.40 49 150 42 95 80 73 71 28 20
LGH-25RVX-E 0.48 62 250 69 85 79 69.5 68 27 23
LGH-35RVX-E 0.98 140 350 97 160 80 71.5 71 32 30
LGH-50RVX-E 1.15 165 500 139 120 78 69 66.5 34 33
LGH-65RVX-E 1.65 252 650 181 120 77 68.5 66 34.5 38
LGH-80RVX-E 1.82 335 800 222 150 79 71 70 34.5 48
LGH-100RVX-E 2.50 420 1000 278 170 80 72.5 71 37 54
LGH-150RVX-E 3.71 670 1500 417 175 80 72 70.5 39 98
LGH-200RVX-E 4.88 850 2000 556 150 80 72.5 71 40 110
* The above values apply during Lossnay ventilation when the fan speed is set to Fan speed 4 at the rating pressure loss and 230 V / 50 Hz.
* For the specications at the other frequency or voltages, contact your dealer.
*
The values given in the table for the noise level reect 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 and/or other
functions.
* Temperature Exchange efciency (%) are based on winter condition.
*
Mitsubishi Electric measures products according to Japan Industrial Standard (JIS B 8628), therefore Q-H curves are measured by chamber method.
* On-site commissioning measurements by pitot tube method could be as much 20% difference from JIS test room conditions. If the measuring
point is close to sources of turbulence like bends, contractions and dampers etc, it is difcult to measure air volume correctly. A straight duct
length more than 10D (D=duct diameter) from the source of turbulence is recommended for correct measurement. On-site measurement
should therefore be measured in accordance with BSRIA guideline (Commissioning Air System. Application procedures for buildings
AG3/89.3(2001))
Maintenance (continued)
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.
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.
Do NOT wash in water.
Attentive inspection
Inspect your unit of good service!
Have you
noticed?
● Fan do not run when the unit is turned on.
● Abnormal noises or vibrations while the unit is running.
● Retarded or irregular rotations.
(Motors are component which requires maintenance.)
● Burnt odor.
● Corroded or damaged installation section.
Stop
running.
Turn off the unit. Then,
contact your dealer for
prevention of failure or
hazard. The dealer should
appraise the possible cost.
Assembly after maintenance
Bearing in mind the following points, assemble the parts following
the sequence for their removal in reverse.
lArrange the Lossnay core with the air lter side downward.
lThe lter for LGH-15 and 35RVX-E has front and back side. Set
the “FRONT” (printed) side of the lter on the outer side.
Note
lIf are indicated or the remote controller, turn off the
indication, after maintenance.