vrf series - calor...by the 1980s toshiba had a broad product off ering. toshiba was the fi rst to...
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Business
VRF Series
The most advanced commercial air conditioning system
4
The most advanced commercial air conditioning solution
By the 1980s Toshiba had a broad
product off ering. Toshiba was the fi rst
to introduce the inverter driven unit in
1981 and the twin-rotary compressor
in 1988.
Toshiba entered the VRF market in
1993 with the advanced two-pipe
Super Multi system, and after a very
fast upgrading, in 2004 launched the
new Super Modular Multi system,
optimised for use with energy-
effi cient, non-ozone-depleting R410A
refrigerant, followed by the Super
Heat Recovery Multi, the 3 pipe
modular system.
In 2006 Toshiba completed the current
VRF range with the addition of the
new compact MiNi-SMMS system, this
is a fl exible system that bridges the
capacity gap between VRF and Multi
systems – ideal for commercial and
private applications.
For the last 47 years Toshiba’s
ambitious objective has been to
design and manufacture the most
state-of-the-art air conditioning,
with innovative technologies in all
areas. From superior performance to
reduced power consumption, from air
treatment to expert assistance.
VRF technology off ers the best
solution for large commercial and
industrial buildings: including hotels,
hospitals, leisure and shopping
centres. The dual inverter compressor
guarantees high effi ciency levels,
operating fl exibility and reduced
maintenance requirements. The wide
range of indoor units makes VRF
system the most fl exible choice to
satisfy any kind of requirement.
As a world-wide leader in electronics
Toshiba not only develops new
technologies but provides products
and systems that improve health and
comfort.
Our objective is to serve the needs of
all, our customers, shareholders and
employees, by implementing forward-
looking corporate strategies in a
responsible and responsive manner.
As good corporate citizens, we seek
to further the goals of society. By
developing innovative technologies
focused on electronics and energy, we
strive to create products and services
that enhance human life and lead to a
thriving, healthy society. We constantly
seek new ways to help realise the goals
of the world’s community, including
global environmental challenges.
5
Toshiba: VRF delivers maximum power and energy savings
With the new generation of Variable
Refrigerant Flow units, MiNi-SMMS,
SMMS cooling only and heat pump
and SHRM heat recovery ranges,
Toshiba sets new technological
standards, incorporating DC twin-
rotary compressors in all outdoor
units, compatible with the high-
density refrigerant R-410A. Thanks
to the use of these dual-compressor
systems, the system operation load
is distributed more evenly, with a
special controller regulating the
operating sequence of outdoor units
and individual compressors. This
innovative technology also allows
optimisation and balancing of the
operating time for each component,
considerably enhancing the reliability
of the complete system. When the
system is in operation, the latest
Toshiba control systems select the
heat exchanger and compressor to
supply the required capacity in the
most effi cient way. This operating
method continuously optimises
the power input compared with a
traditional on/off system and can
reduce it by up to 30%.
DC Twin-rotary compressor in all outdoor units
Vector controlled inverter
DC
Fan motor
All combination outdoor units fi tted with DC twin rotary compressor
(switched to “all inverters” type)
R410A VRF outdoor units
6
Bu
sin
es
s
Only quality, pure and simple
Toshiba has been studying, designing
and creating innovative air conditioning
systems for 30 years and as a result
has always off ered the highest
performance in the market. Quality
and technology have always been
Toshiba’s strength and will remain the
trademark that will diff erentiate
Toshiba air conditioners from the
competition. This is the philosophy
behind every Toshiba product.
With the use of the special inverter
controlled compressors, the new
MiNi-SMMS, SMMS and SHRM ranges
off er a signifi cant reduction in
mechanical and electrical stress. This
is due to the more gradual start-up
compared with traditional on/off
compressors, increasing the durability
and reliability of the components.
SMMS and SHRM models also feature
the active Oil Management System
that constantly checks the oil level in
each compressor and automatically
transfers oil from another outdoor
unit, if an oil shortage is detected in
any compressor.
Energy savings according to Toshiba
The advanced electronic technology in
these systems permits capacity control
that results in signifi cant energy
savings. This objective is achieved
thanks to the use of sophisticated
inverter control and modulating
control valves in each indoor unit.
These permit linear variation of the
refrigerant fl ow in any circuit, directly
proportional to the thermal load,
resulting in further energy savings. In
fact the power input of the outdoor
unit is dramatically reduced with the
heat load reduction in the areas served.
Another factor of energy savings and
management cost savings is that the
systems are sized for the maximum
load, and usually operate at part load.
Compactness and beyond
In 2006, Toshiba complemented the
VRF range with the addition of the
new compact MiNi-SMMS system.
This new range has been designed to
guarantee the most fl exible solutions
for both commercial and private
applications.
VRF off ers important features:
performance, low noise levels,
sophisticated and precise control
systems, energy savings and respect
for the environment. In fact, Toshiba’s
commitment to the research and the
development of new technologies
grants always the maximum care of
the environment: all the VRF systems
are designed to operate with non-
ozone-depleting refrigerant (R-410A)
and the sophisticated dual inverter
control.
Precision is our top priority
Sophisticated inverter control permits
matching the actual refrigerant fl ow
to the capacity required by the
application for each indoor unit.
This results in optimised effi ciency of
the refrigerant cycle and increased
precision in maintaining the required
temperature, improving comfort for
the occupants.
The required capacity and the related
technical parameters for each indoor
unit are electronically transmitted to
the outdoor unit in order to optimise
the zone load calculation and to
control the actual refrigerant fl ow to
each indoor unit, using the special
Pulsed Modulating Valves (PMV).
Unlimited flexibility
Optimised product choice
The ultimate inverter system
Minimised consumption
Compressor development and ecology
This consists of one inverter-driven
compressor and one fi xed-speed
compressor. Each scroll compressor
comprises a fi xed scroll (spiral) and
an oscillating scroll. The oscillating
scroll fi ts within the fi xed scroll.
Refrigerant is drawn from the outside
of the meshing spirals and squeezed
towards the centre of the scrolls,
thereby pressurising the refrigerant.
To minimise leakage, the contact force
required between the two scrolls is
considerable and the scroll surfaces
must be lubricated. At low compressor
speeds lubrication effi ciency is
reduced, resulting in increased
compressor wear.
This consists of two inverter-driven
twin-rotary compressors. A twin-rotary
compressor has two fi xed compression
chambers. An off -centre roller
orbits each chamber to squeeze the
refrigerant. The two rollers are both
mounted on the same shaft, but are
off set to provide counter balance to
each other. The contact force required
between the roller and chamber wall
is lowered. This means that smaller
bearings can be used and lubrication
demand is reduced, saving weight and
making this type of compressor more
suited to lowspeed operation.
Dual DC twin-rotary
compressors
Oil Flow of oil
DC
inverter
compressor
Oil
regulating
pipesDC
inverter
compressor
Leading Technologies
Benefi ts of using R410A refrigerant
zero ozone-depleting potential• signifi cant increase in energy • effi ciency
reduced pressure loss• for improved performance•
Comparison of refrigerant
boiling points (liquid and gas)
Blend of two
types with similar
boiling points
Blend of three
types with diff erent
boiling points
Degradation
likely
Degradation
unlikely R410A
R407C
0
–10
–20
–30
–40
–50
–60 Approximately same
boiling point
High boiling point
–51,8 –48,5 –26,18
R32 R125 R134a
ISO 14001: environmental care from manufacturing
Conventional 2-in-1 scroll
Incorporating the energy-effi cient,
non-ozone-depleting R410A
refrigerant in air conditioning systems
delivers multiple benefi ts:
SMMS-SHRM Dual DC Twin-Rotary
MiNi-SMMS DC Twin Rotary
Compressor 2-in-1 scroll DC twin-rotary Benefi t
Effi ciency Standard 20% improved Greater energy savings
Weight (comparative, %) 92 kg × 1 (100%) 25,2 kg × 2 (55%)Lighter and more compact
Volume (comparative, %) 50 l (100%) 15 l (30%)
Lubrication requirement (100%) (2,5%) = 1/40 Higher reliability
Area Sites Date Certifi ed Certifying body
Japan Toshiba Carrier Fuji site Obtained April 1997 (ISO 14001) JACO (Japan Audit and Certifi cation Organization for Environment and Quality)
Thailand Toshiba Carrier Thailand Obtained May 1998 (ISO 14001) AJA (Anglo Japanese American)
9
Toshiba – focussed on energy conservation
Toshiba has made a signifi cant
investment into researching and
developing technologies that focus on
protecting the environment and saving
energy. The inverter control used for
Toshiba’s VRF range incorporates more,
smaller steps to deliver only the required
power and achieve the temperature
desired by the occupant much faster.
The increase in control steps ensures a
more precise and stable temperature
and eliminates power surges common
in standard, non-inverter systems. This
increases energy effi ciency, compressor
life and user comfort.Toshiba aims to:
Reduce CO• 2 emissions and prevent global warming.
Recycle and reduce waste emissions.• Ensure 90% of the components • used in the R410A VRF are recyclable.
Design only products optimised for • HFC refrigerants.
Reduce power consumption with • each product feature.
Use lead-free solder.•
Compact and modular in design.
The extremely compact design of
the new MiNi-SMMS guarantees a
signifi cant volume reduction for the
outdoor unit and enables installation
on balconies and patios to be fast and
simple.
The SMMS and SHRM outdoor units
have the same modular design and
dimensions, even with diff erent
capacities.
This is of particular benefi t when an
application requires a combination of
the two systems, the result is a smart
and consistent appearance on site. The
units can also fi t into a standard lift
making installation quick and easy.
Conventional system
Reliability and savings
With dual-rotation, the load on the
compressors is distributed more evenly.
The operating sequence of the SMMS
and SHRM outdoor units and the
individual compressors within them is
rotated to spread the operating hours
more evenly. As the compressors are
all inverter driven, power surges are
eliminated. Over or under-utilisation of
power, typical for non-inverter
compressors, is eliminated, and there is
no on/off power surge as the systems
adjusts to the demand required by the
occupant. The use of inverter
compressors with the MiNi-SMMS also
reduces the risk of compressor failure,
more common in standard non-
inverter systems.
During operation the SMMS and SHRM
systems select which outdoor unit and
which compressor are to operate to
deliver the required power.
Inverter systems save energy as
continuous operation off ers the same
capacity with lower power consumption.
This benefi ts all occupants by
maintaining even room temperatures,
as well as the environment by
reducing energy consumption.
Reliability
Base Extension a Extension b
Co
mp
ress
or
Co
mp
ress
or
Co
mp
ress
or
Co
mp
ress
or
Co
mp
ress
or
Co
mp
ress
or
Savings
Operate Stop
On On Off Off
Fixed speed
compressor
Inverter
compressor
1 2 3 4
Fixed speed
compressor
Fixed speed
compressor
Effi ciency declines with one outdoor
unit (heat exchanger)
System with controlled
Safety & Savings
Operate Operate
On On On Off
1 2 3 4 He
at
exc
ha
ng
ers
Using many outdoor units (heat exchangers) is
more effi cient
Inverter
compressor
Inverter
compressor
Inverter
compressor
Inverter
compressor
11
Smooth control
By using all inverter-driven
compressors, Toshiba is able to
signifi cantly reduce the electrical and
mechanical stresses that are placed on
fi xed-speed compressors during start-
up. Current absorption on an inverter-
driven compressor is smoothed out at
start-up thus reducing the wear on the
electrical and mechanical components
and increasing reliability.
Stable operation
The active oil management system
continually monitors the level of oil in
all compressors, should an oil shortage
be detected in any compressor, oil
is automatically transferred from a
compressor in another outdoor unit.
The two compressors in an individual
SMMS-SHRM outdoor unit are
connected by way of an oil balancing
pipe to ensure a uniform oil levels
within the two compressors.
Back-up function
In the unlikely event of one
compressor within an outdoor
unit failing, it is possible in most
circumstances to operate the second
compressor on its own simply by
setting a switch on the interface PCB.
In the case of a complete outdoor unit
failure, operation of the system may
continue by selecting another outdoor
unit to be the master unit. In multiple
outdoor unit systems any unit can be
selected to be the master.
Start-up using all inverter-driven compressor
Compressor
drive
Fixed-speed unit:
sudden start-up
Inverter:
gradual start-up
Start > Drive
Compressor
current
Fixed-speed unit:
5-7 times drive current
No more than
inverter drive current
Start > Drive
Piping
stress
Fixed-speed unit:
c. 3 times normal drive
Inverter: almost same
as during normal drive
Start > Drive
Compressor
oil surface
Compressor
Inverter
Fixed-speed unit
Before
start-up
After
start-up
Little lowering
of oil surface
Temporary fall
in oil surface due
to sudden outfl ow
of refrigerant and oil
12
Silence is golden
As a result of detailed improvements
such as the fan drive circuit, fan
blade design and construction of
the outlet duct our design teams
have successfully reduced outdoor
unit noise levels. These studies have
eliminated the peak noise levels at
start up, normally associated with
fi xed-speed systems, by using soft
start controls. An optional night
operation/sound deadening control
circuit board is available for reducing
noise levels overnight by limiting the
system’s maximum operation. This
has resulted in operating noise levels
below 50 dB(A). The exclusive use
of inverter-driven compressors also
signifi cantly contributes to reduce
noise emissions.
Accurate refrigerant fl ow
Refrigerant fl ow is adapted rapidly
to match the capacity required,
irrespective of each indoor unit
type, position or length of piping.
This results in optimum effi ciency
in the refrigerant cycle and precise
temperature control creating
improved comfort for the occupant.
The characteristic values of each
indoor unit are input into the outdoor
unit, and optimum refrigerant
control is achieved through continual
monitoring and adjustment. By
measurement of refrigerant conditions
within each indoor unit, the load
requirement is calculated and the fl ow
of refrigerant to each indoor unit is
regulated. The operating capacity of
the outdoor units is matched to meet
the overall system requirement.
Enlarged fan blade
for smother air fl owNew propeller
fan design
with large
diameter for
better air fl ow
New heat transfer pipe design
– for greater energy effi ciencyHigh-effi ciency
DC fan motor
Wide range of applications
The MiNi-SMMS heat pump is available
in three models, 4, 5 and 6 HP, delivering
cooling capacities from 12.1 kW to 15.5
kW and heating capacities from 12.5 to
18 kW. One outdoor unit can operate
up to nine indoor units.
The SMMS heat pump can incorporate
28 outdoor unit models with 22 cooling
capacities from 14 kW to 135 kW and
heating capacities from 16 kW to 150
kW, enhancing application fl exibility.
Whilst the SHRM, heat recovery system
off ers a range of 10 outdoor models
with capacities from 22.4 kW to 84 kW
cooling and 25 kW to 95 kW heating. A
very fl exible and energy effi cient option.
There are 13 diff erent indoor unit
models available in 81 sizes ensuring
system fl exibility.
The following confi gurations hold for all VRF range: MiNi-SMMS, SMMS and SHRM
Line branching after header branching - Unique system
Header branching after header branching - Unique system
Header joint
Header branching after line branching
Line branching
Branching joint
Indoor unit
Complete fl exibility
The versatility of VRF Toshiba systems
means that virtually any imaginable
confi guration of the refrigerant y-type
branches and/or header piping can
be used in an application to give
the shortest, most cost-eff ective
piping installation. The piping can
be run in any direction to facilitate
refurbishment work. In addition, the
pipe runs have been extended to off er
total fl exibility.
VRF.The freedom of choice
Variable refrigerant fl ow off er the
advantages of direct expansion
linked to inverter control and the
most sophisticated electronics. This
technology has many advantages,
from the system design to the
installation and operation phase. The
wide range of indoor units makes
VRF the most fl exible choice to
satisfy any requirement. The 3 VRF
ranges can meet any kind of need:
SMMS (Super Modular Multi System)
provides cooling or heating, SHRM
(Super Heat Recovery Multi) provides
simultaneous heating and cooling and
MiNi-SMMS, the new compact system
provides cooling or heating to smaller
commercial or private premises.
Typical applications and advantages
VRF systems off er safety, reliability,
comfort, fl exibility, ease of installation,
durability and energy savings. More and
more commercial centres, shopping
centres, offi ce towers, hospitals and
hotels, all typically requiring the benefi t
of energy savings, have selected this
type of system.
Now, these systems also play an
important role in prestigious residential
installations, where more than one
room needs to be air-conditioned. In
addition, direct-expansion indoor
units off er many benefi ts: easy and
low-cost installation and precise
performance. The range also includes
a complete series of heat exchanger
ventilation units to supply fresh air for
the rooms in a building.
Hotels.
Offi ces.
Retail.With the addition of the MiNi SMMS
to the VRF portfolio the fl exibility
of the Toshiba VRF range ensures
the ideal solution for a multitude
of commercial buildings. For larger
buildings the SHRM and SMMS
are ideal, and for smaller premises
the MiNi-SMMS. There is a system
solution for all commercial buildings,
whether large or small, including
restaurants, high-street shops, luxury
apartments, supermarkets right
through to hotels and hospitals.
The air-conditioned area can be
divided into small or larger individual
zones and here too the large choice
of indoor units, including cassettes,
ducted, fl oor-mounted and many
other unit types always guarantees
the perfect solution.
The system is very effi cient and
unobtrusive, making VRF an
excellent investment!
In this type of application up to
48 indoor units can be installed in
a single refrigerant circuit, and it
is possible to reduce the capacity
of one or more indoor units down
to the minimum operating limit.
This results in considerable energy
savings and ensures a faster payback
of the investment and optimised
comfort.
This system also off ers the ideal
solution for dual-aspect buildings
that require simultaneous heating
and cooling, leading to further
energy savings and making the
systems a reliable choice for many
prestigious applications.
Shopping centres.VRF systems off er maximum
fl exibility. They can be used for even
the smallest commercial rooms. The
main features include providing
the required cooling or heating
capacity and comfort levels, ease
of installation, maximum energy
effi ciency and reliability.
Non-ozone depleting R410A refrigerant
Excellent efficiency (EER and COP)
Compact dimensions
SMMS range:unbeatable performance
SHRM range:heating and cooling
The Toshiba SHRM VRF system introduces
important innovations with the possibility to
provide simultaneous heating and cooling
to diff erent zones or rooms.
They satisfy the most demanding needs and
off er superior performances with COPs of
3.97 (8 HP), 3.61 (10 HP) and 3.68 (12 HP).
The compact fl ow selector enables the
system to heat and cool simultaneously and
can be used in restricted spaces. The cooling
capacity range is from 22.4 to 84 kW and the
heating capacity range from 25 to 95 kW.
Up to 48 indoor units can be connected to a
single system.
With innovative, sophisticated Toshiba
technology the SMMS system ensures
extraordinary fl exibility in any application.
The most advanced heat pump system on
the market off ers a COP of 4.25 in its 22.4
kW size. Units are available with capacities
from 14 to 135 kW in cooilng and from 16
to 150 kW in heating, and their exceptional
effi ciency permits a reduction of up to 50%
in annual energy consumption.
R-410A
SUPER HEAT RECOVERY MULTI SYSTEM
Dual DC Twin Rotary compressors
SHRMVRF Outdoor unit
Key features
Unbeatable energy consumption
effi ciency: the 22.4 kW unit has an
exceptional SEER of 6.57 and an
average COP of 3.97.
Compact fl ow selector unit: it
automatically adjusts the temperature
either by unit or by area.
The highest reliability for back up
operation thanks to dual inverter
compressors.
Piping branch fl exibility: the three-
pipe connection allows installation
height variation of 35 m (equivalent to
a 9-story building).
Wide control applications: Artifi cial
Intelligence network system available
and Building Management System
(BMS) compatible.
Active Oil Management system: it
increases the operation reliability.
Features
The three-pipe VRF Super Heat
Recovery Multi System (SHRM)
delivers simultaneously cooling and
heating and has exceptional energy
effi ciency.
For ease of installation and cost saving
the 8 and 10 HP units are modular.
Protection devicesDischarge and suction temperature • sensors
Internal overload relay• Compressor over-current relay• Over-current sensor• High-pressure switch• Low-pressure sensors•
Technical specifi cations heat pump
Flow Selector
Simultaneous cooling and heating from diff erent indoor units to meet all operating environments
Technical specifi cations outdoor units
Model name Cooling capacity Heating capacityOutdoor units
in combinationNumber of
indoor unitsTotal cap. of connectable
indoor units
Max. Min. Max.
MMY-MAP0802FT8-E 8 HP 22,4 kW 25 kW 1 13 5,6 HP 10,8 HP
MMY-MAP1002FT8-E 10 HP 28 kW 31,5 kW 1 16 7 HP 13,5 HP
MMY-MAP1202FT8-E 12 HP 33,5 kW 35,5 kW 1 16 8,4 HP 14,4 HP
MMY-AP1602FT8-E 16 HP 45 kW 50 kW 2 (22,4 kW + 22,4 kW) 27 11,2 HP 21,6 HP
MMY-AP1802FT8-E 18 HP 50,4 kW 56,5 kW 2 (22,4 kW + 28 kW) 30 12,6 HP 24,3 HP
MMY-AP2002FT8-E 20 HP 56 kW 63 kW 2 (28 kW+28 kW) 33 14 HP 27 HP
MMY-AP2402FT8-E 24 HP 68 kW 76,5 kW 3 (22,4 kW + 22,4 kW + 22,4 kW) 40 16,8 HP 32,4 HP
MMY-AP2602FT8-E 26 HP 73 kW 81,5 kW 3 (22,4 kW + 22,4 kW + 28 kW) 43 18,2 HP 35,1 HP
MMY-AP2802FT8-E 28 HP 78,5 kW 88 kW 3 (22,4 kW + 28 kW + 28 kW) 47 19,6 HP 37,8 HP
MMY-AP3002FT8-E 30 HP 84 kW 95 kW 3 (28 kW + 28 kW + 28kW) 48 21 HP 40,5 HP
Model name Usage
RBM-Y1122FE Total capacity for indoor unit: below 11.2 kW
RBM-Y1802FE Total capacity for indoor unit: 11.2 to below 18.0 kW
RBM-Y2802FE Total capacity for indoor unit: 18.0 to 28.0 kW
Outdoor unit MMY-MAP0802FT8-E MMY-MAP1002T8-E MMY-MAP1202T8-E
8 HP 10 HP 12 HP
Cooling capacity1 kW 22.4 28 33.5
Power input, cooling kW 6.07 8.54 12.9
EER W/W 3.69 3.18 2.6
Energy effi ciency class, cooling A B E
Running current, cooling A 9.25 13.15 19.85
Heating capacity2 kW 25 31.5 35.5
Power input, heating kW 6.29 8.73 9.65
COP W/W 3.97 3.61 3.68
Energy effi ciency class, heating A A A
Running current, heating A 9.55 13.4 14.85
Peak demand current3 A 30 30 30
Air fl ow m3/h – l/s 9900 – 2750 10500 – 2917 10500 – 2917
Sound pressure level – at 1 m dB(A) 57 58 59
Operating range – db °C –10 to 43 –10 to 43 –10 to 43
Operating range – wb4 °C –20 to 16 –20 to 16 –20 to 16
Dimensions (H x L x D) mm 1800 × 990 × 750 1800 × 990 × 750 1800 × 990 × 750
Weight kg 263 263 263
Compressor type Hermetic Hermetic Hermetic
Refrigerant charge R410A kg 11.5 11.5 11.5
Pipework
Suction line type – diameter in Brazed – 7/8 Brazed – 7/8 Brazed – 1 – 1/8
Liquid line type – diameter in Flare – 1/2 Flare – 1/2 Flare – 1/2
Discharge line connection type – diameter in Brazed – 3/4 Brazed – 3/4 Brazed – 3/4
Maximum equivalent length separation m 150 150 150
Maximum actual piping separation m 125 125 125
Maximum pipe length m 300 300 300
Maximum lift (Indoor unit above/below)5 m 30/50 30/50 30/50
Power supply V-ph-Hz 400-3-50 400-3-50 400-3-50
1 Based on an indoor air temperature of 27 °C db/19 °C wb and an outdoor air temperature of 35 °C db2 Based on an indoor air temperature of 20 °C db and an outdoor air temperature of 7 °C db/6 °C wb3 If outdoor units are combined, refer to the installation manual4 The unit can be operated even if outdoor temperature gets down to –20 °C, however note that the warranty covers only up to –15 °C because operation beyond that temperature is out of specifi cation. When outdoor air temperature falls to under –15 °C, it may cause shortening the product lifetime.5 If the height diff erence between indoor units exceeds 3 m and if the indoor unit is above, max. lift is reduced to 30 m