Specifications

Water energy source system allows switching
between cooling and heating.
The WY-Series has all the benefits of the Y-Series using water source condensing units.
Condensing units can be situated indoors allowing greater design flexibility and no limitation on building size.
Depending on capacity, up to 17 to 50 indoor units can be connected to a single condensing unit with
individualized and/or centralized control. The two-pipe system allows all City Multi solutions to switch between
cooling and heating while maintaining a constant indoor temperature.
Advanced water heat source unit enjoying the
benefits of R2 series
The City Multi WR2 series provides all of the advantages of the R2 series with the added advantages of a water
heat source system, making it suitable for wider range of applications in high rises, frigid climates, coastal areas,
etc.
Not only does it produce heat recovery from the indoor units on the same 2-pipe refrigerant circuit, it also produces
heat recovery via the water circuit between heat source units, making it a very economical system.
Water Cooled Series
Cooling or Heating
Installation image (WR2 series)
PQHY-P YHM-A
WY series
[WY(Heat Pump) series]
[WR2(Heat Recovery) series]
PQRY-P YHM-A
PQHY-P YSHM-A PQRY-P YSHM-A
WR2 series
Indoor units
Indoor units
Heat source unit
BC controller
Double heat recovery (WR2)
Heat recovery
Heat recovery
Heat recovery
Water
circuit
Refrigerant Circuit
Heating
Cooling
Cooling
Director's room
Heat source unit
BC controller
Meeting room
Equipment room
Cooling
Equipment room
Water piping
Heat
source
unit
Meeting room
Heating
Heating
Heating
Heat source
Between indoor units
top-bottom
differential 15m [49ft]
(10m [32ft])
Furthest piping length
190m [623ft]
(equivalent length)
(actual length 165m
[541ft])
Indoor unit
Between indoor unit and
BC controller top-
bottom differential
15m [49ft]
BC controller
Heat source unit
Between indoor units
top-bottom differential
15m [49ft]
Top-bottom differential
50m [164ft]
Furthest piping length
190m [623ft]
(equivalent length)
(actual length 165m [541ft])
Installation image (WY series)
Height
1,800
(70-7/8)
Height
1,160
(45-11/16)
Director's room
Heat source unit
Meeting room
Meeting room
Equipment room
Water piping
Heat
source
unit
Equipment room
Cooling
Cooling Cooling
Cooling
Cooling
Width
880
(34-11/16)
Width
990
(39)
Page91
Outdoor unit
Water Coold Series
The new water cooled outoor unit offers a greater efficiency with a higher COP compared to our YGM conventional
model.
System Pipe Lengths
*1 When the outdoor unit is installed below the indoor unit, top-bottom differential is 40m
[131ft].
*1 When the outdoor unit is installed below the indoor unit, top-bottom differential is 40m
[131ft].
[8-24HP (WY series)] [8-24HP (WR2 series)]
Refrigerant Piping Lengths
Total length
Maximum allowable length
Maximum length between heat source and single/main BC controller
*Maximum total length is dependent upon the distance between
the outdoor unit and the single/main BC Controller.
Maximum length between single/main BC controller and indoor
Vertical differentials between units
Indoor/ heat source ( heat source higher)
Indoor/ heat source ( heat source lower)
Indoor/BC controller (single/main)
Indoor/indoor
Main BC Controller/Sub BC Controller
Maximum meters [Feet]
550-750 [1,804-2,460]
165 (190equivalent)
[541 (623)]
110 [360]
40-60 [131-196]
Maximum meters [Feet]
50 [164]
40 [131]
15 [49]
15 (10) [49 (32)]
15 (10) [49 (32)]
COP comparison (energy efficiency)
Downsized by approximately 57%*, the
new models enable an effective use of
space.
*8/10/12HP
Compact design
Weight saving
The reduction in weight leads to easy transportaion and installation.
Heat sourceHeat source unit
Between indoor units
top-bottom
differential 15m [49ft]
(10m [32ft])
Between indoor units
top-bottom
differential 15m [49ft]
(10m [32ft])
Between indoor unit
and BC controller
top-bottom differential 15m [49ft]
(10m [32ft])
Top-bottom
differentrial 50m [164ft]
*1
Furthest piping length
190m [623ft]
(equivalent length)
(actual length 165m
[541ft])
Furthest piping length
190m [623ft]
(equivalent length)
(actual length 165m
[541ft])
Indoor unitIndoor unit
Maximum length
between heat source
and single/main
BC controller
110m [360ft]
Between indoor unit and
BC controller top-
bottom differential
15m [49ft]
Between indoor unit and
BC controller top-
bottom differential
15m [49ft]
BC controllerBC controller
Heat source unitHeat source unit
Indoor unit
Between indoor units
top-bottom differential
15m [49ft]
Between indoor units
top-bottom differential
15m [49ft]
Top-bottom differential
50m [164ft]
Top-bottom differential
50m [164ft] *1
Furthest piping length
190m [623ft]
(equivalent length)
(actual length 165m [541ft])
Furthest piping length
190m [623ft]
(equivalent length)
(actual length 165m [541ft])
8 10121618202224
YGM
Cooling 4.68 4.71 - 3.96 - 3.72 - -
PQHY
Heating 4.68 4.71 - 3.96 - 3.72 - -
YHM Cooling 5.71 5.13 4.55 5.45 5.08 4.89 4.68 4.45
Heating 6.06 5.43 4.60 5.78 5.37 5.22 4.70 4.46
YGM
Cooling 4.68 4.71 - 3.96 - 3.72 - -
PQRY
Heating 5.33 5.43 - 4.54 - 4.63 - -
YHM Cooling 5.65 5.08 4.50 5.40 5.03 4.84 4.63 4.41
Heating 6.06 5.43 4.60 5.78 5.37 5.22 4.70 4.46
mm (in.)
HP
COP comparison
NEW
NEW
8 10121618202224
PQHY
YGM 272 275 - 452 - 456 - -
YHM 195 195 195 390 390 390 390 390
PQRY
YGM 263 266 - 440 - 444 - -
YHM 195 195 195 390 390 390 390 390
HP
Weight comparison
P200, P250YGM (WY/WR2 series)
NEW
NEW
Height
1,800
(70-7/8)
Height
1,800
(70-7/8)
Depth
550
(21-11/16)
Depth
550
(21-11/16)
Height
1,160
(45-11/16)
Height
1,160
(45-11/16)
P200, P250, P300YHM (WY/WR2 series)
Width
880
(34-11/16)
Width
880
(34-11/16)
Width
990
(39)
Width
990
(39)
Refrigerant Piping Lengths
Total length
Maximum allowable length
Farthest indoor from first branch
Vertical differentials between units
Indoor/heat source (heat source higher)
Indoor/heat source (heat source lower)
Indoor/indoor
Maximum meters [Feet]
300-500 [984-1640]
165 (190equivalent)
[541 (623)]
40 [131]
Maximum meters [Feet]
50 [164]
40 [131]
15 [49]
Page92
Outdoor Unit