Mitsubishi Electric VL-250CZPVU-L-ERT User manual

Warning:
Repair work must be performed by the manufacturer, its service
agent or a similarly qualified person in order to avoid hazards.
HANDBOOK
MODELS
VL-250CZPVU-L-E
VL-250CZPVU-R-E
VL-350CZPVU-L-E
VL-350CZPVU-R-E
VL-500CZPVU-L-E
VL-500CZPVU-R-E
VL-250CZPVU-L-ERT
VL-250CZPVU-R-ERT
VL-350CZPVU-L-ERT
VL-350CZPVU-R-ERT
VL-500CZPVU-L-ERT
VL-500CZPVU-R-ERT
July 2021 No. U295-C
Filter (Optional)
P-250F-E P-350F-E P-500F-E
P-250SF-E P-350SF-E P-500SF-E
P-250MF-E P-350MF-E P-500MF-E
P-250PF-E P-350PF-E P-500PF-E
P-250PFH-E P-350PFH-E P-500PFH-E
P-250NF-E P-350NF-E P-500NF-E
RC cover (Optional)
P-RCC-E
Silencer box (Optional)
P-250SB-E
P-350SB-E
P-500SB-E
LOSSNAY HEAT RECOVERY VENTILATOR
Nameplate
* The figure shows VL-350CZPVU-R-E.

Contents
─ 2 ─
Contents
1. Safety precautions .......................................................................... 3
2. Changed points............................................................................... 4
3. Names and functions of components.............................................. 4
4. Specifications.................................................................................. 6
5. Outside dimensions ........................................................................ 9
6. Electrical wiring diagrams ............................................................. 17
7. Circuit board diagrams.................................................................. 18
8. Principles of operation .................................................................. 21
9. Troubleshooting ............................................................................ 27
10. Service inspection list ................................................................. 48
11. Overhauling procedures.............................................................. 49
11-1 VL-250CZPVU-L type, VL-250CZPVU-R type......................................50
11-2 VL-350CZPVU-L type, VL-350CZPVU-R type......................................69
11-3 VL-500CZPVU-L type, VL-500CZPVU-R type......................................85
12. Parts catalog ............................................................................... 94
VL-250CZPVU-L-E .......................................................................................95
VL-250CZPVU-R-E.....................................................................................101
VL-350CZPVU-L-E .....................................................................................107
VL-350CZPVU-R-E.....................................................................................113
VL-500CZPVU-L-E .....................................................................................119
VL-500CZPVU-R-E.....................................................................................125
VL-250CZPVU-L-ERT ................................................................................131
VL-250CZPVU-R-ERT................................................................................137
VL-350CZPVU-L-ERT ................................................................................143
VL-350CZPVU-R-ERT................................................................................149
VL-500CZPVU-L-ERT ................................................................................155
VL-500CZPVU-R-ERT................................................................................161
3
4
4-5
6-8
9-16
17
18-20
21-26
27-47
48
49-93
50-68
69-84
85-93
94-166
95-100
101-106
107-112
113-118
119-124
125-130
131-136
137-142
143-148
149-154
155-160
161-166

─ 3 ─
Read the following precautions thoroughly before the maintenance, and then inspect and repair the product in a
safe manner.
The types and levels of danger that may arise if the product is handled improperly are described with the warning
symbols shown below.
Warning
Modification is prohibited
Do not modify the unit.
( Failure to observe this warning may
result in electric shock, fire and/or injury. )
Electric shock
If you must inspect the circuitry while the power is
on, do not touch the live parts.
(Failure to observe this warning may
result in electric shock.)
Check insulation
Upon completing repair work, always measure the
insulation resistance. Verify that it is at least 10 MΩ
(with a 500-V DC insulation resistance tester), and
then turn on the power.
(Inadequate insulation may result in
electric shock.)
Improper handling of the product may
result in serious injury or death.
Caution
Improper handling of the product may result in injury or
damage to properties including buildings and equipment.
Proper electric work
Qualified electricians shall conduct electric work in
accordance with your local electric work regulations
and the installation manuals.
( Improper connection or wiring installation
may result in electric shock and/or fire. )
Replace damaged and/or degraded parts
Be sure to replace the power cord and lead wires if
they are damaged and/or degraded.
(Failure to observe this warning may
result in electric shock and/or fire.)
Use proper parts and tools
For repair, be sure to use the parts listed in the parts
catalog of the applicable model and use the proper
tools.
( Failure to observe this warning may result
in electric shock, fire and/or injury. )
Caution against
electric shock
Prohibited
Be sure to follow
this instruction.
Turn off the power supply
Be sure to shut off the power supply isolator before
disassembling the unit for repair.
(Failure to observe this warning may
result in electric shock.)
Make sure that the product operates properly upon completion of repair. Clean the product and the surrounding
area, and then notify the customer of the completion of repair.
Caution for injury
Do not work at a location where you do not have a
sure footing.
(Failure to observe this caution may
result in a fall.)
Notes for servicing
● Inspect the earth condition, and repair it if it is incomplete. Make sure that a power supply isolator and an over-
load protection device are installed. If they are not installed, recommend the customer to install them.
Be sure to follow
this instruction.
Wear gloves
Wear gloves when servicing.
(Failure to observe this caution may result
in injury to your hands from sharp metal or
other edges.)
1. Safety precautions
Be sure to follow
this instruction.
Be sure to follow
this instruction.
Be sure to follow
this instruction.
Be sure to follow
this instruction.
Prohibited

─ 4 ─
3. Names and functions of components
- For L-type (for example, VL-350CZPVU-L-E),
filters, controller, and name plate are on the
reflected positions.
* The figure shows VL-350CZPVU-R-E.
18
2
9
310
511
6
7
Optional filter
Filter name MODEL Applicable model Location to use Main material Replacement intervals
Replacement filter
P-250F-E VL-250CZPVU series
RA, OA
L-Type
R-Type
RA: Return Air
OA: Outdoor Air
SA: Supply Air
PET,
acrylic fiber Three yearsP-350F-E VL-350CZPVU series
P-500F-E VL-500CZPVU series
Standard filter
P-250SF-E VL-250CZPVU series
RA, OA, SA
Polypropylene,
polyester
One yearP-350SF-E VL-350CZPVU series
P-500SF-E VL-500CZPVU series
Medium efficiency
filter
P-250MF-E VL-250CZPVU series
RA, OA, SA One yearP-350MF-E VL-350CZPVU series
P-500MF-E VL-500CZPVU series
PM2.5 filter
P-250PF-E VL-250CZPVU series
RA, OA, SA
For SA installation:
One year
For OA and RA installations:
Six months
P-350PF-E VL-350CZPVU series
P-500PF-E VL-500CZPVU series
PM1 filter
P-250PFH-E VL-250CZPVU series
RA, OA, SA P-350PFH-E VL-350CZPVU series
P-500PFH-E VL-500CZPVU series
NOx filter
P-250NF-E VL-250CZPVU series
SA Pulp Six monthsP-350NF-E VL-350CZPVU series
P-500NF-E VL-500CZPVU series
* When a NOx filter and an optional dust catch filter (P-250/350/500SF-E, P-250/350/500MF-E, P-250/350/500PF-E,
P-250/350/500PFH-E) are used together, be sure to install a NOx filter on the SA side and a dust catch filter on the OA side.
* Install any of the filters other than NOx filter on the OA and RA side to protect the product.
4
OA
SA
RA
RA
SA
OA
2. Changed points
New model Previous model Changes from the previous model
VL-250CZPVU-L-ERT VL-250CZPVU-L-E
To meet certification requirements of the destination countries,
Instruction Manual and Installation Manual are provided in the
local languages: Russian, Kazakh, Armenian, and Ukrainian.
The structure and characteristic values of the product are not
changed.
VL-250CZPVU-R-ERT VL-250CZPVU-R-E
VL-350CZPVU-L-ERT VL-350CZPVU-L-E
VL-350CZPVU-R-ERT VL-350CZPVU-R-E
VL-500CZPVU-L-ERT VL-500CZPVU-L-E
VL-500CZPVU-R-ERT VL-500CZPVU-R-E
No. Name Function
1Exhaust air
filter
It prevents the heat exchanger
from clogging.
2Exhaust air
filter case It holds the exhaust air filter.
3Optional air
filter case
For the optional filter
(See the table below.)
4 Filter cover -
5Drain pipe
attachment It is connected to the drain pipe.
6 Control box It holds the circuit board.
7 Name plate
It shows product name and serial No.
8Outdoor air
filter
It removes insects, pollen, dirt, dust,
and other particles from the outdoor
air that is taken into the room.
9Outdoor air
filter case It holds the outdoor air filter.
10
Heat exchanger
(Lossnay core)
It exchanges heat between the
supply air and the return air.
11 Controller
Product operation
* The controller can be installed externally.
(Use the optional component P-RCC-E for
external installation)

─ 5 ─
Installation example
Notes
- Make sure that the exhaust air connection has two or more confluence points with the piping from the
bathroom.
- Pre-heaters and electric dampers may be required in your region.
- Read the instructions carefully in advance when using optional components and commercially available
components.
EA
SA
RA
OA
Pre-heater
(Field supply)
OA shutter
(Field supply)
Externally-installed controller
(Use P-RCC-E for installation)
Silencer Box
(P-250SB-E, P-350SB-E, P-500SB-E)
Router
(Field supply)
By-pass switch
(Field supply)
Living room
Rest room
Humidity sensor
(Field supply)
Ventilation fan
interlocking lighting
switch (Field supply)
Isolator
(Field supply)
CO2sensor
(Field supply)
Wi-Fi interface
(Use MAC-567IF-E)
Outdoor
Tablets
(Field supply)

─ 6 ─
4. Specifications
Model VL-250CZPVU-L-E, VL-250CZPVU-R-E
VL-250CZPVU-L-ERT, VL-250CZPVU-R-ERT
Heat exchange system Heat recovery ventilating system
Heat exchanger material Sensible heat exchanger
Cladding Steel sheet
Heat insulation material Polyethylene foam
Motor DC motor
Blower 180 mm diameter centrifugal fan
Filter Non-woven fabrics filter
Duct connecting Synthetic resin
Duct connecting cover Styrene foam
Outside air condition Shall be higher than -15°C
Return (Suction) air
condition Shall be lower than 40°C, 95%RH
Surrounding air condition Indoor temperature and humidity should not exceed the dew point temperature 12°C
(e.g. RH 60%, 20°C)
Supply fan operation under
low outdoor temperature
-3°C to -15°C: Intermittent operation
-15°C or less: Supply air fan stopped.
*Exhaust air fan:
continuous operation
Function Heat exchange ventilation/ By-pass ventilation, Fan speed 1,2,3,4
The air flow increment by 1% from 25% to 100%
Dimensions
(Height x Width x Depth) 565 mm x 595 mm x 356 mm
Weight 26 kg
Electrical power supply 220–240 V 50 Hz/ 220 V 60 Hz
Insulation resistance 10 MΩ or more
Dielectric strength 1000 V AC 1 minute
Maximum current [A] 1.00
Specifications
Ventilation mode Heat exchange mode
Fan speed Fan Speed 4 (100%) Fan Speed 3 (70%) Fan Speed 2 (50%) Fan Speed 1 (30%)
Running current [A] 0.76 0.35 0.20 0.12
Input power [W] 106 44 23 11
Air volume [m3/h] 250 175 125 75
[L/s] 69 49 35 21
External static
pressure [Pa] 150 74 38 14
Temperature
exchange efficiency
[%] 85 87 88 90
Sound pressure
level at 3 m [dB] 31 22 16 15 >
Attention
1. The above values are at factory default.
2. The running current, the input power, the efficiency and the noise are based on the rating air volume, and 230 V
50 Hz.
3. The sound pressure level at 3 m is spherical.
4. Temperature exchange efficiency (%) is based on winter conditions.
5. Mitsubishi Electric measures figures in the chart according to EN13141-7:2010, and the characteristic curves are
measured by chamber method.

─ 7 ─
Model VL-350CZPVU-L-E, VL-350CZPVU-R-E
VL-350CZPVU-L-ERT, VL-350CZPVU-R-ERT
Heat exchange system Heat recovery ventilating system
Heat exchanger material Sensible heat exchanger
Cladding Steel sheet
Heat insulation material Polyethylene foam
Motor DC motor
Blower 210 mm diameter centrifugal fan
Filter Non-woven fabrics filter
Duct connecting Synthetic resin
Duct connecting cover Styrene foam
Outside air condition Shall be higher than -15°C
Return (Suction) air
condition Shall be lower than 40°C, 95%RH
Surrounding air condition Indoor temperature and humidity should not exceed the dew point temperature 12°C
(e.g. RH 60%, 20°C)
Supply fan operation under
low outdoor temperature
-3°C to -15°C: Intermittent operation
-15°C or less: Supply air fan stopped.
*Exhaust air fan:
continuous operation
Function Heat exchange ventilation/ By-pass ventilation, Fan speed 1,2,3,4
The air flow increment by 1% from 25% to 100%
Dimensions
(Height x Width x Depth) 623 mm x 658 mm x 432 mm
Weight 32 kg
Electrical power supply 220–240 V 50 Hz/ 220 V 60 Hz
Insulation resistance 10 MΩ or more
Dielectric strength 1000 V AC 1 minute
Maximum current [A] 1.32
Specifications
Ventilation mode Heat exchange mode
Fan speed Fan Speed 4 (100%) Fan Speed 3 (70%) Fan Speed 2 (50%) Fan Speed 1 (30%)
Running current [A] 1.08 0.52 0.31 0.18
Input power [W] 155 71 37 19
Air volume [m3/h] 320 224 160 96
[L/s] 89 62 44 27
External static
pressure [Pa] 150 74 38 14
Temperature
exchange efficiency
[%] 85 87 88 90
Sound pressure
level at 3 m [dB] 35 26 19 15 >
Attention
1. The above values are at factory default.
2. The running current, the input power, the efficiency and the noise are based on the rating air volume, and 230 V
50 Hz.
3. The sound pressure level at 3 m is spherical.
4. Temperature exchange efficiency (%) is based on winter conditions.
5. Mitsubishi Electric measures figures in the chart according to EN13141-7:2010, and the characteristic curves are
measured by chamber method.

─ 8 ─
Model VL-500CZPVU-L-E, VL-500CZPVU-R-E
VL-500CZPVU-L-ERT, VL-500CZPVU-R-ERT
Heat exchange system Heat recovery ventilating system
Heat exchanger material Sensible heat exchanger
Cladding Steel sheet
Heat insulation material Polyethylene foam
Motor DC motor
Blower 230 mm diameter centrifugal fan
Filter Non-woven fabrics filter
Duct connecting Synthetic resin
Duct connecting cover Styrene foam
Outside air condition Shall be higher than -15°C
Return (Suction) air
condition Shall be lower than 40°C, 95%RH
Surrounding air condition Indoor temperature and humidity should not exceed the dew point temperature 12°C
(e.g. RH 60%, 20°C)
Supply fan operation under
low outdoor temperature
-3°C to -15°C: Intermittent operation
-15°C or less: Supply air fan stopped.
*Exhaust air fan:
continuous operation
Function Heat exchange ventilation/ By-pass ventilation, Fan speed 1,2,3,4
The air flow increment by 1% from 25% to 100%
Dimensions
(Height x Width x Depth) 632 mm x 725 mm x 556 mm
Weight 39 kg
Electrical power supply 220–240 V 50 Hz/ 220 V 60 Hz
Insulation resistance 10 MΩ or more
Dielectric strength 1000 V AC 1 minute
Maximum current [A] 2.3
Specifications
Ventilation mode Heat exchange mode
Fan speed Fan Speed 4 (100%) Fan Speed 3 (70%) Fan Speed 2 (50%) Fan Speed 1 (30%)
Running current [A] 1.73 0.77 0.40 0.19
Input power [W] 275 104 49 21
Air volume [m3/h] 500 350 250 150
[L/s] 139 97 69 42
External static
pressure [Pa] 200 98 50 18
Temperature
exchange efficiency
[%] 85 87 89 92
Sound pressure
level at 3 m [dB] 37 29 22 15 >
Attention
1. The above values are at factory default.
2. The running current, the input power, the efficiency and the noise are based on the rating air volume, and 230 V
50 Hz.
3. The sound pressure level at 3 m is spherical.
4. Temperature exchange efficiency (%) is based on winter conditions.
5. Mitsubishi Electric measures figures in the chart according to EN13141-7:2010, and the characteristic curves are
measured by chamber method.

─ 9 ─
5. Outside dimensions
VL-250CZPVU-L-E, VL-250CZPVU-L-ERT
202202
2088181
φ 122
51
(565)
14
242
119
595
32
219224
280
309
126
83
10 356 20
40
40
30179179179
681
228423
178387
Drain pipe (EA)
φ22 Drain pipe (SA)
φ22
Power supply cord Control box
Pipe guide (EA)
Pipe guide (OA)
Pipe guide (SA)
Pipe guide (RA)
Filter cover (OA)
Filter cover (RA)
Filter cover (SA)
Wall mount hook top
Controller
Heat exchanger
Wall mount hook down
Wall bracket
(accessory)
Wall mount hook center
Cable strap hole
RA: Return Air
SA: Supply Air
EA: Exhaust Air
OA: Outdoor Air
150
300
298
125
500
46
600
Control box
Space to pull out the control box
Working space (Required space around the Lossnay unit)
Unit (mm)

─ 10 ─
VL-250CZPVU-R-E, VL-250CZPVU-R-ERT
202202
88
181
32
595
φ122
224219
86
318
269
115
10 356 20
40
40
30179179179
20
242
51
(565)
14
118
228423
178387
681
Drain pipe (EA)
φ22
Drain pipe (SA)
φ22
Power supply cord Control box
Pipe guide (SA)
Pipe guide (RA)
Pipe guide (EA)
Pipe guide (OA)
Filter cover (RA)
Filter cover (OA)
Filter cover (SA)
Wall mount hook top
Controller
Heat exchanger
Wall mount hook down
Wall bracket
(accessory)
Wall mount hook center
Cable strap hole
RA: Return Air
SA: Supply Air
EA: Exhaust Air
OA: Outdoor Air
300
150
500
298
600
60
125
Control box
Space to pull out the control box
Working space (Required space around the Lossnay unit)
Unit (mm)