Toshiba MM-A0160HX, Service Manual

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Outline of MMS (Modular Multi System)
• Non-polarized control wiring between
outdoor and indoor units
• Wiring diagnosis system
[Example of wiring diagnosis]
Use the switches on the microcomputer
PCB of the outdoor unit.
• Detects wiring to the indoor unit b4
which should not be in system A.
• b4 is missing in system B.
Outdoor unit
Indoor unit
Indoor unit
Piping
Wiring
System A
System B
Outdoor
unit
1st branching
section
Height difference between indoor unit and outdoor unit: 30m Height difference between indoor unit and outdoor unit: 50m
From 1st branching to the
farthest indoor unit: 50m
Allowable pipe length :
100m real length
(Equivalent to 125m)
Outdoor
unit
Outdoor
unit
Compact design
The design of the Toshiba MMS outdoor unit allows for easy unit
maneuvering into any standard lift. Its size also allows it to be easily
installed in limited spaces.
Largest system capacity
Toshiba’s Multi Modular System can be combined up to 128.8kW
(46 HP).
Advanced bus communication system
Wiring between indoor and outdoor unit is a simple 2-wire system.
Communication address is also automatically configured.
A default test mode operation is available.
Self diagnostic system
Comprehensive troubleshooting code enables quick identification of
problems arising.
High lift design
Real pipe length of 100m (equivalent length 125m) and vertical lift of
50m is made possible with Toshiba’s Multi Modular System.
Vertical lift between indoor units of 30m is the highest in the market.
This allows for greater flexibility in the location of the system.
Multiple indoor units
Indoor units with different capacities and configurations can be
combined up to 135% of the outdoor unit capacity.
A maximum of 40 indoor units can be combined with the 46 HP
outdoor module.
Intelligent control
Toshiba’s 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/heating capacity dynamically so humidity and temperature
are kept in the comfort zone.
Outline of MMS (Modular Multi System)
Branching
Line Branching
Header Branching
Line + Header Branching
Line Branching after Header Branching
Combination of line and header branching is highly flexible. This allows
for the shortest design route possible, thereby saving on installation
time and cost. Line/header branching after header branching is only
available with Toshiba’s Multi Modular System.
Outdoor Unit
Outdoor Unit
Outdoor Unit
Outdoor Unit
Outdoor Unit
Indoor Unit
Indoor Unit
Indoor Unit
Indoor Unit
Indoor Unit
Branching joint
Branching joint
Branching joint
Branching
Header
Header
Header
Header
Header
MMS
Only
MMS
Only
8F
7F
2F
1F