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Mitsubishi Electric LGH-15RX5-E Installation Instructions Manual

Lossnay energy recovery ventilator
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Lossnay Energy Recovery Ventilator
Installation Instructions
Models LGH-15RX
-E to LGH-100RX
This product needs to be installed properly in order to ensure maximum functionality as well as safety.
Please make sure to read this installation manual before starting the installation.
Installation must be performed by a dealer or installation contractor. Please note that improper installation may cause malfunction or accident.
Separate booklet "Operating Instructions" is provided for the customer. The booklet and this manual must be handed over to the customer after completing the installation.
Safety precautions
The following signs indicate that death or serious injury may be caused by failure to heed the precautions described below.
Do not modify or disassemble.
(It could cause fire, electric shock or injury.)
Do not
The Lossnay unit and remote controller should not be installed
where it is highly humid, like a bathroom, or other wet place.
(It could cause electric shock or power leakage.)
Prohibition of use in
bath or shower room
Connect the product properly to ground.
(Malfunctioning or power leaks can cause electrical shock.)
Connect the
grounding wire.
Do not place a burning appliance in a place where it is exposed
directly to the air from the Lossnay unit.
(It could cause an accident as a result of incomplete combustion.)
Do not use at a place where it is exposed to high temperatures
(40˚C or higher), naked flames, or in environment with
combustible 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.)
Do not install this product in a place where it is exposed to
ultraviolet light. (UV may damage covering insulation.)
● When using the product where it is exposed to high temperatures and humidity (40˚C or
higher, RH 80% or higher), or where fog occurs frequently, moisture is likely to condense
in the core, and may result in condensation build up in the unit. The product should not
be used under such conditions.
● Outdoor air may enter the Lossnay owing to the pressure difference between indoor
and outdoor or external winds even when the product is not operated. It is recommended
to install an Electrically operated damper to block the outdoor air.
● In a cold weather area, an area with strong external winds or where fog occurs frequently,
cold outdoor air, external winds or fog may be introduced into the product when its
operation is stopped. It is recommended to install an Electrically operated damper.
Models LGH-150RX
-E and LGH-200RX
(For use by dealer/contractor)
Safety precautions ............................................. 1
Outline drawings ................................................ 2
Standard installation examples .......................... 3
Installation method ............................................. 3
Function settings .............................................. 10
Trial operation .................................................. 12
Use the specified power supply and voltage. (Use of incorrect power supply
or voltage could cause fire or electric shock.)
Select a place with sufficient strength and install the main unit securely.
(It could cause injury if it falls.)
Wiring work must be performed by qualified professionals, and be
implemented safely and securely in accordance with the engineering
standards and the extension wiring rules for electrical equipment.
(Poor connection or improper wiring work could cause electric shock or fire.)
Install a power supply isolator at the power supply side as per local electrical regulations.
All supply circuits must be disconnected before obtaining access to the terminal devices.
The instructions
Use the specified cable size and connect the cables securely to prevent disconnection
given must be
when they are pulled. (If there is a defect in the connection, there is a possibility of fire.)
Select an adequate place for the opening to introduce outdoor air, where it will
not intake the exhaust fumes like combustion gas, or others, and there is no risk
of blockage. (Shortage of fresh air could put the room in a state of oxygen deficiency.)
A duct made of steel must be installed with care not to be connected
electrically with metals such as metal , wire , stainless steel plate, or others.
(It could cause fire when power leakage occurs.)
Put on gloves during installation. (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 after the installation. (It could cause electric shock, power
leakage, or fire as a result of deteriorated insulation.)
Always use the specified suspension bolts, nuts and washers or
correctly rated wire / chain hangers. (Use of hardware with insufficient
strength could result in the product dropping.)
The outside ducts must be tilted at a gradient (1/30 or more) down
toward the outdoor louvres from Lossnay, and properly insulated.
The instructions
(The entry of rain water may cause power leakage, fire, or damage to household property.)
given must be
The control box cover must be closed after the installation. (Dust
or humidity may cause power leakage or fire.)
When connecting external devices (electrically operated damper,
lamp, monitoring unit, etc.) using output signals of the Lossnay
unit, make sure to install safety equipment for the external devices.
(It could cause fire, damage, etc. without safety equipment.)
● When using the product in an environment where there is a window, or opening near
the outdoor louvre , where insects are likely to gather around the interior or exterior
light , take note that small insects may intrude into the product.
● In a cold weather area, or others, dewing or freezing could occur on the main unit,
where the duct is connected, or other sections, depending on the conditions of outdoor
air and indoor temperature and moisture, even if they are within the range of operating
conditions. Make sure to confirm the operating conditions and other precautions, and
do not use the product if dewing or freezing is anticipated.
*Example of dewing condition - Outdoor air: -5˚C or lower, dew-point temperature at installation place: 10˚C or
higher (When the indoor temperature is 22˚C or higher with the relative humidity higher than 50%, or other)


Table of Contents

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  Summary of Contents for Mitsubishi Electric LGH-15RX5-E

  • Page 1: Table Of Contents

    Lossnay Energy Recovery Ventilator Models: LGH-15RX LGH-25RX LGH-35RX LGH-50RX LGH-65RX LGH-80RX LGH-100RX LGH-150RX LGH-200RX Installation Instructions (For use by dealer/contractor) Models LGH-15RX -E to LGH-100RX Models LGH-150RX -E and LGH-200RX Contents Safety precautions ..........1 Outline drawings ..........2 Standard installation examples ......3 Installation method ..........
  • Page 2: Models

    Outline drawings Accessory parts LGH-15 to 100 RX *LGH-80 and 100RX types Position where duct direction change is possible • Mounting screws ........x16 (4-15 × 20 oval) Bypass damper plate • Duct connecting flanges ......x4 Air exhaust fan Ceiling suspension fixture (double flanges at SA and EA sides) (4-13 ×...
  • Page 3: Standard Installation Examples

    Standard installation examples * Except the 150 and 200 RX • Duct length Return air grille Model Distance (not Included) LGH-15 to 65 RX 1 m or more LGH-80 and 100 RX 2.5 m or more EA (exhaust air outlet) LGH- 150 and 200 RX 3 m or more Lossnay unit...
  • Page 4 Installation method (continued) CAUTION If the suspension bolts are short, change the • Before attaching the ducts, check that no (debris or any other) mounting hardware. foreign matter (scraps of paper, vinyl, etc.) has found its way inside the ducts. For the models LGH-80 and 100 RX (1) Remove the suspension fixture and mount it to the upper mounting •...
  • Page 5 Installation method (continued) Electrical installation With this product, the wiring installation method will vary according to the design of the system. Perform electrical installation to meet local electrical regulations. * Always use double insulated PVC cable for the transmission cables. * Wiring work must be performed by qualified professionals.
  • Page 6 Installation method (continued) Wire connection diagram ----- Models LGH-150 and 200 RX * Connect the wires shown as thick lines. * Be sure to connect the ground wire. * A power supply isolator must be installed when wiring power supply to unit. * Always use a single pole isolator for the main switch power connection.
  • Page 7 Control box cover 8 When switching Bypass externally. 9 When using the remote/local switching and the ON/OFF input (level signal) 0 When connecting to the City Multi, Lossnay remote controller (PZ-52SF- E) or Mitsubishi Electric Air-Conditioner Network System (MELANS). Screw CAUTION •...
  • Page 8 Installation method (continued) (2) Confirm that the pulse input switch (SW2-2) is set to “OFF”. Lossnay External controller input (TM2) (Set to “OFF” at time of shipment.) 0.5 mm to 1 mm sheathed PVC cable 12 3 External device Remote controller Lossnay (PZ-60DR-E or PZ-41SLB-E)
  • Page 9 When connecting to the City Multi, Lossnay remote controller (PZ-52SF-E) (When CO decreases: Closed) (Optional) PAC-SA88HA-E control board or Mitsubishi Electric Air-Conditioner Network System (MELANS) Brown 1 Red 2 CN16 If centralized control is performed according the wire connection Orange 3 shown in this section, the remote controller (PZ-41SLB-E) can- not be used.
  • Page 10: Function Settings

    When interlocking with Mitsubishi Free Plan air conditioner Address setting is required. (Refer to function setting section.) • Incase of PZ-60DR-E M-NET transmission cable: Connect any of the City Multi indoor unit, or Mitsubishi Electric Air-Condi- Lossnay conditioner conditioner tioner Network System (MELANS) - to the Lossnay.
  • Page 11 Function settings (continued) Settings for pulse input Bypass automatic ventilation priority setting Set as shown when connecting the pulse signal equipment from a Two thermistors in the Lossnay unit detect the indoor (RA) and building maintenance system to an external input. outdoor (OA) air temperatures and automatically select the “Lossnay ventilation”...
  • Page 12: Trial Operation

    Function settings (continued) Exhaust fan stop during defrosting, exhaust fan Low speed Setting for TM3 67 output operation at outdoor air lower than -15˚C Sets the operation of the exhaust fan (when the air supply fan is Operation stopped) during defrosting of the air conditioner when Mr. Slim or Bypass ventilation operation monitor output.
  • Page 13 Trial operation (continued) 2. Stand-alone Lossnay trial operation 3. Complete system trial operation (1) Supply power to the Lossnay unit. ■ Interlock system containing an indoor unit and/or external device (2) Turn the trial operation switch (SW2-1) “On.” • Use the remote controller for the indoor unit or the operating switches •...