Section 1 Design Manual; Outline Of Mms (Modular Multi System) - Toshiba MMS Series Design Manual

SECTION 1 DESIGN MANUAL

1-1. OUTLINE OF MMS (Modular Multi System)

Shortest route design by free branching
Combination of line and header branching is highly flexible.
This follows for the shortest design route possible, thereby
saving on installation time and cost. Line/header branching
after header branching is only available with TOSHIBA MMS.
Line branching
Outdoor unit
Branching joint
Indoor unit
Header branching
Outdoor unit
Branching
header
Indoor unit
Line + Header branching
Header
Outdoor unit
Indoor
Branching joint
unit
Line branching after header branching
Outdoor unit
Branching joint
Header
MMS Only
Indoor unit
Header branching after header branching
Outdoor unit
Header
MMS Only
Header
Indoor unit
8F
7F
2F
1F
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Compact design
The design of the modular TOSHIBA MMS outdoor unit allows for easy
unit maneuvering into any standard lift. Its compactness also allows
it to be easily installed in limited spaces.
• Non-polarized control wiring
Largest system capacity
between outdoor and indoor units
TOSHIBA MMS modular multi system can be combined up to
46 HP (128kW) as one refrigerant system.
Outdoor unit P Q
Energy saving
Indoor unit P Q P Q P Q Compared with the conventional chiller fan coil system, a large energy
saving can be realized.
Advanced bus communication system
• Wiring diagnosis system
Wiring between indoor and outdoor unit is a simple 2 wire system.
Use the switches on the micro processor
Communication address is also automatically configured.
P.C. board of the outdoor unit.
A default test mode operation is available.
• Detects wiring to the indoor unit a4 which
should not be in system A.
Self diagnostics system
• b4 is missing in system B.
Comprehensive troubleshooting code allows for timely identification
of problems arising.
High lift design
Piping
A
Outdoor
Real pipe length of 100m (equivalent length 125m) and vertical lift
system unit
of 50m is made possible with TOSHIBA MMS system.
a1 a2 a3 a4
Vertical lift between indoor units of 30m is the highest in the industry.
Wiring Indoor unit
B This allows for greater flexibility in the location of the system.
Outdoor
system unit
b1 b2 b3 b4
Multiplied indoor units
Indoor units with different capacities and configurations can be
combined up to 135% of the outdoor unit capacity.
Allowable pipe length :
100m actual length
A maximum of 40 indoor units can be combined with the 40–46 HP
(Equivalent to 125m)
Outdoor
outdoor units.
unit
1st branching
section
Intelligent control
TOSHIBA MMS intelligent controls and modulating valves deliver the
required capacity, according to the load variation from 50% to 100%.
The intelligent controls and modulating valves limit or increase the
cooling capacity dynamically so humidity and temperature are kept
in the comfort zone.
Conforms to building control law
IAQ (Indoor Air Quality) is also achieved by combining various
accessories required by the Building Control Law.
From 1st branching to the
farthest indoor unit : 50m
Wide control applications
Artificial Intelligence Network system
• Central control and monitoring system available
• Weekly schedule operation through weekly timer
Integration with Building Management System (BMS)
is available.
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