Mitsubishi Electric Y Series Manual page 68

WY
68
Cooling or Heating
• Features ∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙
• Specifications PQHY-P Y(S)LM-A1∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙
• Optional parts ∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙
• Technologies and functions
A water energy source system that allows switching
between cooling and heating
The CITY MULTI WY-Series provides all the benefits of the Y-Series using water-cooled heat source units.
Heat source units can be situated indoors for greater design flexibility with no limitations on building size. Depending on
capacity, up to 50 indoor units can be connected to a single heat source unit with individualized and/or centralized
control. The two-pipe system allows all CITY MULTI units to switch between cooling and heating while maintaining a
constant indoor temperature.
• Installation image (WY-Series)
• System pipe lengths
Refrigerant piping lengths
Total length
Maximum allowable length
Furthest indoor unit from first branch
Vertical differentials between units
Indoor/heat source (heat source higher)
Indoor/heat source (heat source lower)
Indoor/indoor
*1 When the heat source unit is installed below the indoor unit, top-bottom differential is 40m [131ft].
*2 90m [295ft] is available. When the piping length exceeds 40m [131ft], use one size larger liquid pipe starting with the section of piping where 40m [131ft] is exceeded and all
piping after that point.
-Series
Heat pump
∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙P.162
Office area
Cooling
Meeting room
Cooling
Meeting room
Cooling
[P200-P900]
Maximum meters [Feet]
300-500 [984-1640]
165 (190 equivalent)
[541(623)]
40 [131]*2
Maximum meters [Feet]
50 [164]
40 [131]
15 [49]
P.70, P.72 - P.73
P.74 - P.80
Dual
SCO
Office area
Cooling
Heat source unit
Top-bottom Top-bottom
differential differential
50m [164ft]*1 50m [164ft]*1
P.81
Water piping
Heat
source
unit
Director's room
Cooling
Heat source unit Heat source unit
Furthest piping length Furthest piping length
190m [623ft] 190m [623ft]
(equivalent length) (equivalent length)
(actual length 165m [541ft]) (actual length 165m [541ft])
Between indoor units Between indoor units
top-bottom differential top-bottom differential
15m [49ft] 15m [49ft]
Indoor unit