Specifications

Y series & R2 series
Common Features in
Y (Heat Pump) series & R2 (Heat recovery) series
Compact Design
The downsized outdoor unit can be
transported through a 800 mm wide door.
Industry leading space saving
The new models have a smaller foot print
and service space requirement than
previous models.
Effective Use of Space
Industry leading weight saving
The manageability of the outdoor unit has been
improved due to a drastic reduction in it's weight,
leading to easy transportation, installation, and
reduction in withstand load.
10HP outdoor unit
As of September, 2006 (based on internal survey)
233kg
PUHY-P250YGM-A
210kg
PUHY-P250YHM-A
23kg
reduction in weight
Industry
Leader
Industry
Leader
8-12HP outdoor units
800 (31-1/2)
1,400 (55-1/8)
850 (33-15/32)
Depth
760
(29-15/16)
mm (in.)
mm (in.)
Height
1,650
(64-31/32)
Height
1,710
(67-3/8)
Width
920
(36-1/4)
10
(13/32)
10
(13/32)
60
11 (7/16)
Example of 6-people elevator.
8-12HP systems (Y/R2 series)
1.43m
2
14-18HP systems (Y series)
14-16HP systems (R2 series)
1.89m
2
920 (36-1/4)15 (19/32) 15 (19/32)
1,510
(59-15/32)
760
(29-15/16)
300
(11-13/16)
450
(17-23/32)
1,220 (48-1/16)15 (19/32) 15 (19/32)
760
(29-15/16)
300
(11-13/16)
450
(17-23/32)
1,510
(59-15/32)
mm (in.)
Easy to
transport
City Multi
makes it easy.
The narrow space between buildings
makes it difficult to use a crane.
The unit can easily be transported even into slender buildings.
Conventional CITY MULTI (YGM series)
45%
reduction
18HP (Yseries)
1.89m
2
3.46m
2
1,740
(68-17/32)
1,220 (48-1/16)15 (19/32) 15 (19/32)
760
(29-15/16)
300
(11-13/16)
450
(17-23/32)
1,510
(59-15/32)
1,990 (78-11/32)
840
(33-1/16)
450
(17-23/32)
450
(17-23/32)
mm (in.)
Page85
Outdoor unit
Y series & R2 series
The anti-corrosion Blue Fin treatment of the heat
exchanger is especially effective in urban
environments where the traffic pollutions can
damage the aluminum fins reducing the capacity
and life expectancy of the unit. All City Multi R410A
outdoor units have been treated with Blue Fin.
Even when one of the indoor units in the system is
under maintenance, the other indoor unit can still
operate.
Blue Fin Treatment
Ensuring simple and easy maintenance, system
tests are available to check wiring, sensors and the
refrigerant amount.
System Check
Both Y and R2 series correspond to high static
pressure of 60Pa, ideal and flexible for any type of
application.
60Pa High Static Pressure
as standard
Height
1,650
(64-31/32)
Low Noise Levels New Fan Design
CITY MULTI VRF systems led the introduction of
larger single fan motors some ten years ago,
achieving substantially lower noise levels over
multiple designs.
Continuing the development in the areas of blade
shape and weight, Mitsubishi Electric have managed
to achieve even higher performance and lower noise
levels. To reduce noise levels further and comply
with inner city residential noise regulations, all
outdoor units include low noise mode. This function
works by lowering the fan speed and compressor
frequency proportionally with reduction in demand.
New inverter driven outdoor fan motor
The compressor compartment is sealed by metal panels to attain
low noise levels in all directions.
Highly efficient R410A
Scroll compressor
Low
Noise
Low
Noise
Low
Noise
Low
Noise
Newly designed refrigerant
circuit (low pressure loss)
Photo : Y series
R410A Pipe Sizing
As R410A has a higher specific heat capacity than
R22, the pipework is smaller. This means the pipe
itself is cheaper, easier to install and less riser space
is required within the building.
Conventional
Gas
piping
φ28.58
(φ1-1/8)
Liquid
piping
φ12.7
(φ1/2)
mm (in.)
Gas
piping
φ22.2
(φ7/8)
Liquid
piping
φ9.52
(φ3/8)
Based on 10HP model
Easy Maintenance
* Not applicable to all situations.
* Be sure to turn off the power to the indoor unit when repairing or
servicing the unit.
Under maintenance In operation
Page86
Outdoor Unit