Midea MDV-V105W/DVN1 User manual

Contents
Part 1 General Information.................................................................. 1
Part 2 Outdoor Units............................................................................ 9
Part 3 Installation ............................................................................... 49
Part 4 Troubleshooting……………………………………………………61
Manufacture reserves the right to discontinue, or change at any time, specifications or designs without
notices and without incurring obligations.

MCAC-VTSM-2014-09 R410AAll DC Inverter Mini VRF
General Information 1
Part 1 General Information
1. Product Lineup..................................................................................... 2
2. Nomenclature........................................................................................ 3
3. Features................................................................................................. 4
4. Indoor Units Lineup.............................................................................. 8

R410AAll DC Inverter Mini VRF MCAC-VTSM-2014-09
2General Information
1. Product Lineup
Outdoor Units
10.5kW Model 12~16kW Model
Model name
Dimension body
Inch (mm)
Net/Gross weight
lbs(kg)
Power supply
MDV-V105W/DVN1
Width:42-21/64 (1075)
Height: 38-1/32(966)
Depth: 15-19/32(396)
171.8/187.4(78/85)
208-230V-1ph ~60Hz
MDV-V120W/DVN1
Width:35-7/14 (900)
Height: 52-1/4(1327)
Depth: 15-3/4(400)
209.4/233.7(95/106)
208-230V-1ph ~60Hz
MDV-V140W/DVN1
209.4/233.7(95/106)
208-230V-1ph ~60Hz
MDV-V160W/DVN1
224.9/249.1(102/113)
208-230V-1ph ~60Hz

MCAC-VTSM-2014-09 R410AAll DC Inverter Mini VRF
General Information 3
2. Nomenclature
MDV-V120W/DVN1
*Note: the actual cooling capacity please refers to the nameplate.
Refrigerant
N1:R410A
Power supply
V: 208~230V-60Hz-1ph
D: 208~230V, 60Hz, 3ph
C: 380~415V, 60Hz, 3ph
Inverter Type
D: DC Inverter
W: Outdoor unit
Cooling Capacity (X100W)*
Inverter
Midea VRF

R410AAll DC Inverter Mini VRF MCAC-VTSM-2014-09
4General Information
3. Features
3.1 Wide application
The All DC Inverter Mini VRF system is a highly efficient solution for small commercial buildings requiring
heating and cooling of up to 7 zones with one outdoor unit. Such as villa, restaurant, school etc.
Midea offers a variety of indoor unit, more than 100 models of 15 types. Capacity ranges are from 1.8kW to
16kW. It is full compliance with residential and light commercial place. Our systems can operate up to 130% of
capacity which allows any system to be designed to the customers’and applications’needs.

MCAC-VTSM-2014-09 R410AAll DC Inverter Mini VRF
General Information 5
Compressor
(Twin Rotary) structure
3.2 High efficiency DC inverter compressor
All DC inverter Mini VRF adopt highly intelligent inverter-driven compressor. This advanced technology
enables the output of the outdoor unit to be modulated by the real heat load demands.
This advanced system ensures precise temperature regulation and highly efficient energy usage, making a
significant contribution to the limiting the impact on the environment.
3.3 High performance heat exchanger
The new designed window fins enlarge the heat-exchanging area ,
decrease the air resistance, save more power and enhance heat
exchange performance.
Hydrophilic film fins and inner-threaded copper pipes optimize heat
exchange efficiency.
3.4 Low-operating sound design
Optimally design fan shape and new designed discharge air grille and air deflector, making higher air volume
and lower operation sound.
3.5 Quick warm-up & cool-down design and less temperature fluctuation
Utilizing the inverter compressor benefits,
the system can reach full load quickly and
shorten warm-up or cool-down time for an
immediate comfortable air solution.
Less temperature fluctuation will create a
better living environment.
New fan
Air deflector
New grille
Highly Efficient DC Motor:
- Creative motor core design
- High density neodymium magnet
- Concentrated type stator
-Wider operating frequency range
Better balance and Extremely Low Vibration:
- Twin eccentric cams
- 2 balance weights
Highly Stable Moving Parts:
- Optimal material matching rollers and vanes
-Optimize compressor drive technology
- Highly robust bearings
-Compact structure
Fluctuation of room temperature
Cooling operation
2
1
Temp.
Time
Notn-inverter
Inverter
New design Original design
High efficiency inner-thread pipe,
enhance heat transfer.

R410AAll DC Inverter Mini VRF MCAC-VTSM-2014-09
6General Information
3.6 Wide operation temperature range
No matter in extremely cold winter when outdoor
temperature gets as low as -15°C or in hot summer
when temperature is up to 43°C, the Mini VRF
system will keep stable performance.
3.7 Flexible piping design
3.8 Flexible indoor unit’s connection
Mini VRF with intelligent control gives you independent zoning control with maximum flexibility.
A single outdoor unit supports up to nine indoor units, freeing up considerable space outside. Use your
backyard more wisely with much more space available created by less number of outdoor units.
Max. 5 indoor units for a 10.5kW outdoor unit installation
Max. 6 indoor units for a 12kW outdoor unit installation
Max. 6 indoor units for a 14kW outdoor unit installation
Max. 7 indoor units for a 16kW outdoor unit installation
3.9 Simple signal line connection
Installation is much easier as the communication wiring between indoor & outdoor units can be shared.
It’s easy for the user to retrofit the existing system with a centralized control by simply connecting to outdoor
units.
Longest
piping length
Level
difference
between
IDU~ODU
The IDU to the
nearest branch
pipe
The first branch
joint to the farthest
indoor unit
Level differece
between IDU~IDU
PQE & XYE, just only one group of communication wire of PQE,
achieved both of communication for indoor & outdoor unit and
network.
Reversible communication, central controller can be connected
from indoor side or outdoor side as you wish.
P Q E
P Q E P Q E P Q E P Q E
XY E X Y E
Piping Length
Permitted Value
Total piping length (Actual)
100m
Longest piping
length
Actual
45m(10.5kW)
60m (12~16kW)
Equivalent
50m(10.5kW)
70m (12~16kW)
The first branch joint to the
farthest IDU
20m
The IDU to the nearest branch pipe
15m
Level difference
between ODU~IDU
ODU up
30m
ODU down
20m
Level difference between IDU~IDU
8m

MCAC-VTSM-2014-09 R410AAll DC Inverter Mini VRF
General Information 7
3.10 Auto address setting function
The addresses of indoor units can be set automatically by outdoor unit.
Wired controller and wireless controller can enquire and modify the address of each indoor unit.
3.11 Easy piping connection
Offering four directions to connect pipes and wirings
to meet various installation requests.
3.12 Easy installation
The mini VRF can be transported by elevator which makes
installation dramatically easy, and effectively reduces time
and labor thanks to the small size.
3.13 Easy maintenance
Forced cooling button makes outdoor unit run in cooling mode at
any condition, so it is very easy for you to charge refrigerant to the
system when it needs to be done. The self-diagnosis function
detects malfunctions in major locations in the system and displays
the type of malfunction and location. This allows service and maintenance
to be performed more efficiently.
3.14 Space saving
The Mini VRF units are more compact, resulting in significant savings in installation space. It is particularly
suitable for small offices, villas, shops, etc.
Outdoor unit can
distribute address
for indoor unit
automatically Shield signal wire
Wired and wireless controller
can enquire and modify address
of each IDU.
Right side
Upper side
Back side
Front side Bottom side
Front side Back side Right side Bottom side
Fat pipe
Easy to transport

R410AAll DC Inverter Mini VRF MCAC-VTSM-2014-09
8General Information
4. Indoor Units Lineup
Capacity
(×100W)
Capacity
(Btu/h)
Cassette type
One-way cassette
Two-way cassette
Compact
four-way
cassette
Four-way
cassette
18
6140
●
22
7500
●
●
●
28
9600
●
●
●
●
●
36
12300
●
●
●
●
●
45
15400
●
●
●
●
56
19100
●
●
●
71
24200
●
●
80
27300
●
90
30700
●
100
34100
●
112
38200
●
140
42600
●
Capacity
(×100W)
Capacity
(Btu/h)
Duct type
Low static pressure
duct
Medium static pressure duct
High static pressure duct
18
6140
●
22
7500
●
●
28
9600
●
●
36
12300
●
●
45
15400
●
●
56
19100
●
●
71
24200
●
●
80
27300
●
●
90
30700
●
●
100
34100
112
38200
●
●
140
42600
●
●
160
54600
●
Capacity
(×100W)
Capacity
(Btu/h)
Wall mounted
Ceiling & Floor
S panel
C panel
R panel
22
7500
●
●
28
9600
●
●
36
12300
●
●
●
45
15400
●
●
●
56
19100
●
●
●
71
24200
●
●
80
27300
●
●
90
30700
●
●
112
34100
●
140
38200
●
160
42600
●
Note: If ODU connect only one IDU, the capacity of IDU should be not more than ODU.
If ODU connect more than one IDU, the capacity of each IDU should be not more than 8kW for refrigerant uniform distribution.
Due to continuous improvement, specifications are subject to change without prior notice.