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Air Flow Adjustment
To improve the effects of cooling and heating, use the outlet louver appropriately for cooling and
!
heating operations. When in cooling operation the most efficient louver position will be horizontal,
and when in heating operation the optimum louver position is downwards.
The MM-S, MM-SR unit is different due to its installation position, in this case the above louver
!
positions should be reversed.
Increasing Heating Effect
One method to increase the heating effect is to fit an additional means of re-circulating the
!
warmed air from the upper part of the room;
However if the heating effect of the air conditioner is not good owing to the installation position or
the structure of the room, then reset the room temperature regulator as follows to raise the
!
temperature of the room. Adjust positions 1 and 2 on DIP switch SW03 located on the Indoor
PCB (MCC-1361-01), according to the table below:
Dip Switch SW03
Positions 1 & 2
Temperature increased
The Modular Multi Indoor Units have a de-rating option that can be implemented to closely match
actual load requirements.
To de-rate any Toshiba MMS Indoor Unit, adjust Dip Switch SW08 located on the Indoor Unit PCB
(MCC-1361-01) in accordance with the chart below.
The de-rating options available for the Toshiba MMS Indoor Units are as follows:
Size
Model
MM-B140
5HP /
MM-C/CR140
14kW
MM-U140
MM-B112
4HP /
MM-C/CR112
11.2kW
MM-U112
MM-B080
MM-C/CR080
3HP /
MM-K/KR080
8.0kW
MM-N080
MM-S/SR080
MM-U080
MM-B056
MM-C/CR056
MM-K/KR056
2HP /
MM-N056
5.6kW
MM-S/SR056
MM-TU056
MM-U056
MM-C/CR042
1.5HP /
MM-K/KR042
4.2kW
MM-N042
MM-TU042
MM-N028
1HP /
MM-SB028
2.8kW
MM-TU028
NOTE: No further de-rating options are permitted.
I
MPROVING
Position 1 : ON
Position 2 : OFF
Factory pre-set
I
U
NDOOR
NIT
Factory Setting
De-rating Option 1
(SW08)
(SW08)
1
2
3
4
Size
1
2
3
4
4HP /
O
O X
X
O
X
O O
11.2kW
3.2HP /
O
X O
O
O
X
O X
8.5kW
2.5HP /
O
X
X
O
O
X
X
X
7.0kW
1.7HP /
X
O O
O
X
O O X
4.8kW
1.25HP/
X
O X
O
X
O
X
X
3.5kW
0.8HP /
X
X O
O
X
X
O X
2.24kW
S
E
YSTEM
FFICIENCY
Position 1 : OFF
Position 2 : ON
˚
+2
C
D
-R
O
E
ATING
PTION
De-rating Option 2
De-rating Option 3
(SW08)
Size
1
2
3
4
Size
1
3.0HP /
O
X
X
O
8.5kW
2HP /
X
O O
O
5.6kW
1.5HP /
1.25HP /
X
O
X
O
X
4.2kW
3.5kW
1.0HP /
0.8HP /
X
X
O
O
X
2.8kW
2.24kW
~ 31 ~
Position 1 : OFF
Position 2 : OFF
˚
+4
C
De-rating Option 4
(SW08)
(SW08)
2
3
4
Size
1
2
3
4
1.0HP /
O X
X
X
X
O O
2.8kW
X O
X
X = OFF
O = ON
GB
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