Mitsubishi Electric SKU-50RJ-E User manual

Lossnay Energy Recovery Ventilator for Home Use
Model
Installation Instructions
0802872HN7303
(For use by dealer/ contractor)
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.
Installation must be performed by a dealer or installation contractor. Please note that improper installation
may cause malfunction or accident.
The following signs indicate that death or serious injury may be caused by failure to heed the precautions described below.
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.
Safety Precautions
Do not
disassemble
Prohibited
Do not modify or disassemble.
(It could cause fire, electric shock or injury.)
The main 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.)
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 for protection against power leakage.
(It could cause fire if power leakage occurs.)
Use the specified wires and connect them securely to prevent disengagement 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 inhale the exhaust fumes like
combustion gas, or others, and there is no risk of blockage by snow fall, or others.
(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.)
WARNING
Prohibition of use in
bath or shower room
The instructions
given must be
followed.
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 place an object on or sit on the main unit. (It could cause electric shock, fire, or other damage.)
Do not use at a place where it is exposed to high temperatures (40℃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.)
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.
(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 entry of rain water may cause power leakage, fire, or damage to household property.)
The control box cover must be closed after the installation. (Dust or humidity may cause power leakage or fire.)
The instructions
given must be
followed.
CAUTION
SKU-50RJ-E
2 flashes
4 flashes
1 flashes Failure of Lossnay circuit
Failure of Lossnay Thermistor (OA side)
Failure of Lossnay Thermistor (SA side)
The inspection indicator lamp
(LED1 Green) in the control
box flashes.
Turn off the power and immediately contact
your dealer.
Trial Operation (continued)
3. If trouble occurs during trial operation
Symptom Remedy
Lossnay runs →Check the signal lines
Lossnay doesn’t run →Check the power supply
Lossnay does not operate
when the ON/OFF button of
the remote controller (PZ-
45SLJ-E) is pressed.
・Check the power supply (The specified power supply is single-phase 230V50Hz.)
・Check for a short circuit or disconnection in the transmission cable. (Check that the voltage between
terminals in the transmission cables is 9 to 15 VDC for the PZ-45SLJ-E.)
・Check that there is 5 cm or more separating the transmission cable from the power supply cable and any
other transmission cables.
・Run the Lossnay independently using the trial operation switch (SW2-1) and check if it runs.
2. Lossnay independent trial operation
(1) Remove the control box cover.
(2) Turn the trial operation switch (SW2-1) to "On."
Operation will start at the "High" setting. (This will take
approximately 45 seconds after the power is turned on.)
(3) Turn the trial operation switch (SW2-1) to "Off."
(4) Install the cover in its original position on the control box.
OperationOFF ON
1
SW2 Power will be supplied to the motor for the
Lossnay fan and operation will be
performed at the "High" setting.

When using the product where it is exposed to high temperatures and humidity (30℃or higher, RH 80% or higher), or fogs
occur frequently, moisture is likely to condense in the core, resulting in the dripping of condensation water. The product
should not be used under such conditions.
Outdoor air may be introduced into the product owing to the pressure difference between indoor and outdoor or external winds
even when the product is not operated. It is recommended to install also an electrically operated damper to block the outdoor air.
In a cold weather area, an area with strong external winds or where fogs occur frequently, cold outdoor air, external winds or
fog may be introduced into the product when its operation is stopped. It is recommended to install also an electrically
operated damper to shut them out.
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)
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 light , take note that small insects may intrude into the product
.
Do not install the product near a bedroom.
Provide heat insulation to all ducts to prevent moisture condensation.
Do not use vent caps or round hoods in places directly exposed to rain.
Do not install the Lossnay unit in the ceiling of bedroom.
OA intake should be placed where it is not exposed to rain.
CAUTION
Unit (mm)
Outline Drawings
Trial Operation
Sample installation
Attention
After the product has been installed, carry out a trial operation.
If an error code should be flash, refer to the following table and take the required action.
1. Trial operation with the remote controller (PZ-45SLJ-E)
OA
(Outside air)
EA
(Exhaust air)
OA
(Outside air)
Hood or Louvre
(to prevent rain water
from seeping in)
Downward gradient of duct:
1/30 or more (toward wall side, provide 1m or more )
(to prevent rain water from seeping in)
EA
(Exhaust air)
RA
(Return air)
RA
(Return air)
SA
(Supply air)
SA
(Supply air)
Anchor bolt, nut
(Not included)
Supply air grille
(Not included)
Return air grille
(Not included)
Anchor bolt, nut
(Not included)
φ200 Duct
(Not included)
Function setting
Configure the function setting using the function selection switch (SW-2) in the control box.
The setting can be changed at any time.
Configuring function selection switch (SW-2)
Ventilation stop by low SA temperature / high SA temperature and automatic recovery
When Lossnay detects low or high temperatures out of the
SA temperature setting range, it stops ventilation. Lossnay
checks the SA temperature every two hours. When it
detects a temperature within the setting range, it starts
operating again at the fan speed used before stopping.
※"STby"(Standby) is displayed on the remote controller if
Lossnay does not operate due to the above function.
※"Lo" is displayed on the remote controller when the
temperature is -10℃or lower.
OFF ON
SW2
Operation
7
8Lossnay stops when the SA temperature is
detected 8℃or lower.
7
8Lossnay stops when the SA temperature is
detected 10℃or lower.
7
8Lossnay stops when the SA temperature is
detected 12℃or lower.
7
8Invalid
9
10
9
10
9
10
9
10
Lossnay stops when the SA temperature is
detected 31℃or higher.
Lossnay stops when the SA temperature is
detected 28℃or higher.
Lossnay stops when the SA temperature is
detected 25℃or higher.
Invalid
Relevant button Relevant display items Sequence
1
2
3
4
5
Initiate the supply of power to the Lossnay unit. (The [HO]
display will flash for approximately 40 seconds)
Press the ON/OFF button. The Operation lamp will turn on and
the Lossnay unit will begin to operate.
Press the DISPLAY ℃button to select the display of SA or IA
temperature.
Press the Fan Speed Adjustment button to select low, middle,
or high fan speed.
Press the ON/OFF button. The Operation lamp will turn off and
the Lossnay unit will stop operating.
A circuit abnormality has occurred in the Lossnay unit.
Error code
4116
Cause Remedy
A breakdown has occurred in the Lossnay thermistor (OA side).
5101 A breakdown has occurred in the Lossnay thermistor (SA side).
5105 A breakdown has occurred in the remote controller thermistor.
Communication error
Turn off the power supply and
contact the retail outlet from
where this product was
purchased for further instructions.
Turn off the main switch and turn it
back on. If the error still continues,
contact the retail outlet.
5106
6608
- 2 - - 7 -
Built-in IA (Indoor Air) thermistor
Remote controller (included with the product)
Accessory parts
Mounting screw⋯×12 Duct connecting flange⋯×3
Control
box
EA
(exhaust air)
(supply air)
SA (return air)
RA
(outside air)
OA
Air supply fan
Heat exchanger
(Lossnay core)
Air filter
Power cord opening
fixture
OA Maintenance cover
Air exhaust fan
Ceiling suspension
Maintenance
cover
Inspection space
420
184
262
871
30262
544 19
256 58
202
95
424
85
85
544
φ192
φ192
φ192 φ192
φ208
φ208
φ208 φ208
142
142
415
142
391 More than 700
More than 830
More than 600
How to remove the RA chamber form the Lossnay unit
The RA duct can be installed on the opposite side. Remove the RA chamber from the
unit by removing the screws, then rotate the RA chamber 180 degrees and reinstall.
Remove the RA chamber from the unit by removing the
mounting screws.
Maintenance
cover
Mounting
screw
Mounting
screw
RA chamber
RA chamber
Mounting screw

1
Preparing the anchor bolts
Mount the washers (outer diameter of > 21 mm for M10,
> 24 mm for M12) and nuts onto the pre-recessed anchor
bolts (M10 or M12), as shown in the left figure.
Attaching the duct connecting flanges
Use the supplied screws to secure the duct connecting
flanges (3 pieces) to the Lossnay unit.
(One flange comes already mounted at the OA side.)
Before attaching the duct connecting flanges, check that no
foreign matter (scraps of paper, vinyl, etc.) has found its way
inside the Lossnay unit.
2
3
Installation method
Installing the Lossnay unit
Connecting the ducts
Nut
Washer
Nut
Anchor bolt (M10~M12)
Note
Install the anchor bolts on the location to ensure the product's
weight or earthquake load.
Note
Mounting the Lossnay unit
(1) Hang the ceiling suspension fixtures on the anchor
bolts and adjust them in such a way that the Lossnay
unit is level.
(2) Tighten securely using double nuts.
(1)
Install ducts from the ceiling or wall inlets / outlets to
the Lossnay unit.
(2) Connect the ducts securely to the duct connecting
flange, and wrap aluminum tape (Not included) around
the joints so that there is no air leakage.
(3) Suspend the ducts from the ceiling so that their weight
will not be applied to the Lossnay unit.
(4) All ducts
must be covered with heat-insulating
material in order to prevent condensation from
forming.
Before attaching the duct connecting flanges, check that no
foreign matter (scraps of paper, vinyl, etc.) has found its way
inside the Lossnay unit.
Note
Condensed water may drop without insulation for ducts.
Note
Installation method (continued)
3
Connecting the wires and mounting the remote
controller
(1) Fully insert the (non-polar) transmission line into the
connection terminals.
(2) Gently tug on the wiring to confirm that it is being
securely gripped.
(3) Mount the remote controller on the switch box using
the two screws provided as accessory parts.
When mounting the cover, be careful not to pinch the IA Thermistor.
Note
Lossnay



Remote Controller
(PZ-45SLJ-E)
(Enclosed accessory)
Power Supply TM4
Connecting the Lossnay unit to the remote controller
Securely connect the transmission line (double insulated
PVC cable) from the remote controller to 1and 2of the
input terminal block (TM4). (No polarity)
(Note that a 2 core cable should be used, this cable
should be PVC insulated, and should either be
between φ0.65 and φ1.2, or between 0.3 mm2and
1.25 mm2in cross section.)
Connection terminal
Press this button
to release.
Insert the
transmission line.
Remote controller
Switch box
Screw
(accessory parts)
4
Mounting the cover
To mount the cover, secure the two hooks at its upper
edge and press on its lower section until it snaps into
place.
Setting for filter maintenance
When Lossnay unit has operated for the time set as the cumulative-operation time, the Filter display will begin to flash
indicating the cleaning of the filter is required. This setting time should be selected in accordance with the degree of
contamination of the air in the unit's installation location. To perform an actual setting, press and hold the FILTER
button for at least five seconds to display the setting value and to turn on the Filter display.
Then, press the Filter button to change the setting value in the repeating sequence:
When the button is released before 5 seconds have elapsed, the display will turn
off and the current replacement time will be selected. Note that this value is set to
[3000] before shipment from the manufacturing plant.
3000 0
- 6 - - 3 -
Mounting screw
(accessory parts)
Duct connecting flange
(accessory parts)
Ceiling suspension fixture
Nut
Washer
Nut
OA
(Outside air)
EA
(Exhaust air)
Wall
RA
(Return air)
SA
(Supply air)
Heat-insulating material
Duct
Aluminum tape
Duct connecting flange
Extremely
sharp bends Multiple bends Bends right next to the outlet Extreme reduction in the diameter of the
connected ducts
Do not carry out the following types of duct
construction. (Doing so could cause a drop in the
air volume and generate abnormal noises.)
Remote controller
IA Thermistor
Hook
Cover

1
Loosen the screws and open the control box cover.
Upon completion of the wiring connections, replace the
control box cover.
Connecting the power supply cable and transmission
line
Pass the power supply cable through the PG connector
and connect to the TM1 terminal block using the round
terminals. Connect the grounding wire to the grounding
terminal and secure tightening the PG connector.
2
1
Wiring
(1) Insert a single-unit switch flush box.
(2) Lay the wiring duct as far as the switch box.
(3) Connect the transmission line (double insulated PVC
cable) from the Lossnay unit to the switch box.
(Note that a 2 core cable should be used, this cable
should be PVC insulated, and should either be
between φ0.65 and φ1.2, or between 0.3 mm2and
1.25 mm2in cross section.)
(4) Use standard putty to create a secure seal to prevent
frosting due to the intake of atmospheric air.
Removing the cover
To remove the cover, insert the tip of a flat-head
screwdriver into the notch and turn.
Take care during removal of the cover to avoid causing any
damage.
2Note
Confirm that the Lossnay unit's power supply is not turned on
before connecting its signal wire to the switch box.
Note
Note
Installation method (continued)
Connecting the power supply cable
Installing the remote controller (PZ-45SLJ-E)
Cover
Always separate the power supply cable and transmission
line by 5 cm or more to prevent malfunctioning of the unit.
If the length of the stripped power cables wires is too long,
the conductors may touch and cause shorting.
Power supply cable size : Between 1.0mm2to 2.5mm2.
Refer to the wiring diagram and screw down the grounding
wire and transmission cable to the terminal block.
Secure the transmission line using the cord clip.
With this product, the wiring installation method will vary according to the design of the system. Perform
electrical installation for each of the required sections.
* Always use double insulated PVC cable for the transmission lines.
* Wiring work must be performed by qualified professionals.
* Connect the wires shown as thick lines.
* Be sure to connect the grounding wire.
* A power supply isolator must be installed when wiring power supply to unit.
* Always use an all pole disconnection for the main switch (isolator) for the power connection.
Electrical installation
Names of components in the control box
Wire connection diagram
SW2
TM2
Grounding terminal
LED1
LED4
TM1
Use a PG connector
to fix the power cable.
Bush
TM4
- 4 - - 5 -
ＴＡＢ３
ＴＭ４
230V 50Hz
line
C
C
RED
RED
5
1
5
1
ＳＷ４
×3
×4
×1
WHITE
FAN MOTOR
SUPPLY
HIGH
ＣＮ９
ＣＮ１０
FAN MOTOR
EXHAUST
BLUE HIGH
×2
ＳＷ３
External control input
a-contact
ＴＭ２
(non-polar)
24V DC
12V or
Uncharged
45SLJ-E
Transmission
PZ-
ＳＷ２
GREEN/YELLOW
WHITE
WHITE
BROWN
BROWN
BROWN
BLUE
ISOLATOR
ＣＮ２
ＣＮ１
TAB1
TAB2
ＴＭ１
ZNR2 DSA1
C1
FUSE
250V 5A
ZNR1
ＴＲ
POWER SUPPLY
×7
ＴＡＢ５
BLUE
WHITE
ＴＨ２（ＳＡ）
ORANGE
ORANGE
ORANGE
ORANGE
ＴＨ１（ＯＡ）
ＣＮ５
Ｎ
Ｌ
２
Ｍ
１
Ｍ
３１
２
１
１３２
Ｎ
Ｌ
MARK
: Indicates
terminal block
: Connector
: Board insertion
connector or
fastening
connector of
control board
M1: Motor for exhaust
fan
M2: Motor for supply fan
C: Capacitor
TH1: Thermistor for
outside air
TH2: Thermistor for supply
air
SW2: Switch (Function
selection)
TM1: Terminal block
(Power supply)
TM2: Terminal block
(External control
input)
TM4: Terminal block
(Transmission cable)
TAB1,TAB2: Connector (Power
supply)
TR: Control circuit
transformer
Symbol explanation
CN1: Connector
(Transformer
primary)
CN2: Connector
(Transformer
secondary)
CN5: Connector
(Thermistor)
TAB3: Tab connector (Fan
motor)
TAB5: Tab connector (Fan
motor)
CN9: Connector (Fan
motor)
CN10: Connector (Fan
motor)
LED1: Inspection indicator
lamp
LED4: Power supply
indicator lamp
54 1.5 44
10
10
16 16
20
6
50
83.5
40
102
Switch box
Transmission
line
Putty
(commercially
available)
Power supply cable
TM4
Cord clip
Transmission line
Transmission line
Control box cover
PG connector
Power supply
cable
TM1
Grounding wire
Use the round terminals
when connecting to the
TM1 terminal block.
Unit (mm)
Control box cover
Screw