Mitsubishi CityMulti Catalog - Salvex

Y-SERIES OVERVIEW
CITY MULTI ® Y-Series:
The two-pipe zoned
system designed for
heat pump operation
Y-Series outdoor units are flexible enough
to cool or heat up to 50 individual zones,
maximizing building design options.
They feature low operating sound, easy
piping and maintenance design, and light
weight. Y-Series units are available in
both 208/230V and 460V up to 30 tons
for different applications, (6-20 ton units
meet ENERGY STAR ® Light Commercial
Requirements and will exceed proposed
ASHRAE 90.1 efficiency ratings for 2010).
Design flexibility
Flexibility is the key with the CITY MULTI Y-Series.
The Y-Series, just like the R2-Series, can condition up
to 50 zones intelligently. The Y-Series takes advantage of
Mitsubishi Electric’s INVERTER technology to deliver the
precise amount of cooling or heating to all connected
zones. By using T-branches and headers, the Y-Series
provides the ultimate in piping design flexibility that is truly
simple in application. The BC Controller is not used for
Y-Series installations.
The ultimate in zoning
The CITY MULTI Y-Series uses a two-pipe system with a
wide variety of indoor units and individual zone controllers to
provide the ultimate zoning system. Headers and T-branches
simplify the piping design and provide design freedom for
placement of both piping and indoor units. Individual zones
are managed by remote controllers placed in each zone or by
the centralized controller. The BC Controller is not used for
Y-Series installations.
Heat Pump (Y- / WY- / S-Series)
Intelligent energy usage
The highly responsive INVERTER technology and customized
individual zones of the CITY MULTI Y-Series provide year–
round savings. In warm summer months, the Y-Series provides
exceptional zoned cooling, and in cold winter months
the INVERTER-driven compressor provides outstanding
heating performance.
CITY MULTI systems, in combination with Mitsubishi
Electric’s TG-2000 integrated system software configured with
Tenant Billing, are able to monitor and log each zone’s energy
usage via a networked PC.
Larger projects, more options
New to the modular outdoor unit design specifications is an
option for either a 208/230V, 3-Phase, 60Hz powersource or a
460V, 3-Phase, 60Hz power source. Another feature is larger
capacities for the larger projects–to 30 tons–and an increased
number of connectable indoor units–50–with increased line
lengths. These capabilities increase the range
of potential applications for which an architect, engineer or
building owner cab specify CITY MULTI VRF systems.
Increased pipe length
The Y-Series two-pipe system offers great piping design flexibility.
Two pipes run from the Y–series outdoor unit to connect up to
50 indoor units via simple T-branches, headers, or combination
of both. A Y-Series system may have a total combined length
of refrigerant piping up to 3,280 feet one way. The farthest
distance between the Y-Series outdoor unit and any one of the
50 indoor units is 541 feet. The outdoor unit can be placed 164*
feet vertically above the lowest indoor unit or 131 feet vertically
below the highest indoor unit. The Y-Series offers exceptional
line lengths that will accommodate just about any commercial
application, including multi-story office buildings, universities, and
many, many others.
Refrigerant piping lengths
Total length ............................................................3,280
Maximum feet
Farthest indoor from outdoor ..............................541 (623 equivalent)
Farthest indoor unit from first branch ...................134 – 184
Vertical differentials between units
Indoor/outdoor (outdoor higher) ...........................164*
Indoor/outdoor (outdoor lower).............................131
Indoor/BC controller (single/main) ........................49
- Maximum length between single/main BC controller and
indoor is dependent upon the vertical differential between
the single/main BC controller and the indoor unit.
Indoor/indoor .........................................................49
Main BC Controller/Sub BC Controller ................49
Maximum feet
22