Toshiba MMY-MAP0806FT8P-E Installation Manual page 67

Selection of pipe size
No. Title Use part
Type
MMY-MAP0806*
Outdoor unit
MMY-MAP1006*
Ô
Outdoor unit
(1) Outdoor unit MMY-MAP1206*
connecting pipe
connection
MMY-MAP1406*
piping kit
MMY-MAP1606*
MMY-MAP1806*
MMY-MAP2006*
Total capacity codes of outdoor units at the
Outdoor unit
Between connection
Equivalent to capacity
Outdoor unit piping kit
(2) connection Ô
45.0 to below 61.5
piping Outdoor unit
61.5 to below 73.0
*6 connection
73.0 to below 101.0
piping kit
101.0 or more
Total capacity codes of all
Equivalent to
capacity
Outdoor unit
connection piping
22.4 to below 33.5
kit of header unit
(3) Main piping 33.5 to below 38.4
Ô
38.4 to below 45.0
First branching
section 45.0 to below 61.5
61.5 to below 73.0
73.0 to below 101.0
101.0 or more
Total capacity codes of indoor
Branching section units at the downstream side
Ô
Equivalent to
Branching section
capacity
Below 18
Branching section
Branching pipe
(4) Ô 18 to below 34
*1, *2, *6
Flow Selector unit
34 to below 45.5
45.5 to below 56.5
Flow Selector unit
56.5 to below 70.5
Ô
70.5 to below 98.5
Branching section
98.5 or more
Capacity rank
Flow Selector unit
Indoor unit
(5) Ô
connecting pipe
Indoor unit
131-EN
1117701001-EN.indd 66 1117701001-EN.indd 66
Selection of pipe size
Balance pipe Suction gas Discharge
side side gas side
Ø9.5 Ø22.2 Ø19.1
Ø9.5 Ø22.2 Ø19.1
Ø9.5 Ø28.6 Ø19.1
Ø9.5 Ø28.6 Ø22.2
Ø9.5 Ø28.6 Ø22.2
Ø9.5 Ø28.6 Ø22.2
Ø9.5 Ø28.6 Ø22.2
Suction Discharge
downstream side
gas side gas side
Equivalent to HP
16 to below 22 Ø28.6 Ø22.2
22 to below 26 Ø34.9 Ø28.6
26 to below 36 Ø34.9 Ø28.6
36 or more Ø41.3 Ø28.6
Suction
outdoor units
Discharge Liquid
gas
gas side side
side
Equivalent to HP
Pipe size differs
8 to below 12 Ø22.2 Ø19.1 Ø12.7
based on the total
12 to below 14 Ø28.6 Ø19.1 Ø12.7 capacity codes of
all outdoor units
14 to below 16 Ø28.6 Ø22.2 Ø15.9
(See Table 2.)
16 to below 22 Ø28.6 Ø22.2 Ø19.1
22 to below 26 Ø34.9 Ø28.6 Ø19.1
26 to below 36 Ø34.9 Ø28.6 Ø22.2
36 or more Ø41.3 Ø34.9 Ø22.2
Suction
Discharge Liquid
gas
gas side side
Pipe size differs
side
Equivalent to HP
based on the total
capacity code
Below 6.4 Ø15.9 Ø12.7 Ø9.5
value of indoor
6.4 to below 12.2 Ø22.2 Ø19.1 Ø12.7
units at the
12.2 to below 16.2 Ø28.6 Ø22.2 Ø15.9
downstream side.
16.2 to below 20.2 Ø28.6 Ø22.2 Ø19.1 (See Table 1
and 2.)
20.2 to below 25.2 Ø34.9 Ø28.6 Ø19.1
25.2 to below 35.2 Ø34.9 Ø28.6 Ø22.2
35.2 or more Ø41.3 Ø34.9 Ø22.2
Equivalent to HP Gas side
005 to 012 0.8 to 1.25 Ø9.5
015 to 018 1.7 to 2.0 Ø12.7
024 to 056 2.5 to 6.0 Ø15.9
072 to 096 8.0 to 10.0 Ø22.2
No. Title Use part
Remarks
Terminal
Liquid side
Indoor unit branching section
(6)
Ô
Ø12.7 connecting pipe
Indoor unit
Ø12.7
Ø12.7
Ø15.9
Ø19.1
Ø19.1
Ø19.1
Y-shaped
(7) branching joint Branching section
*3, *4
Liquid side
Ø15.9
Ø19.1
Ø19.1
Ø22.2
Branching
(8) header Branching section
*3, *4, *5
Outdoor unit
connection
(9) Branching section
piping kit
*6
Flow Selector Flow Selector unit
(10) Ô
unit
*7 Indoor unit
Liquid side
Ø6.4
Ø6.4 *1: Use the same size as the main pipe if it is larger than the main pipe.
*2: Use a suction gas pipe and a liquid pipe for the two pipes branching downstream from the flow selector unit and the dedicated cooling circuit.
Ø9.5
*3: Select the branch pipe of the first branch according to the outdoor capacity code.
*4: Select according to the outdoor unit capacity code if the total of the indoor capacity codes exceeds the outdoor unit capacity code.
Ø12.7
*5: It is possible to select up to a maximum capacity code total AP056 (6 hp) for the first circuit after the header branch.
When using a branch header for the first branch with an outdoor unit capacity code of 33.5 (12 hp equivalent) or more and 73.0 (26 hp equivalent) or less,
use RBM-HY2043FE (4 branches) and RBM-HY2083FE (8 branches) regardless of the total value of the capacity codes of the downstream indoor units.
And, a branch header cannot be used as the first branch if the performance rank is over 73.0 (26 hp equivalent).
*6: The downstream starting point is the main pipe.
*7: If the performance rank is over 117.5 (42HP equivalent), "Flow Selector unit" is available for only Multi port type.
– 66 –
Selection of pipe size
Equivalent to
Capacity rank Length of piping Gas side
HP
15 m or less real length
005 to 012 0.6 to 1.25
Exceeds 15 m real length
15 m or less real length
015 to 018 1.7 to 2.0
Exceeds 15 m real length
024 to 056 2.5 to 6.0 -
072 to 096 8.0 to 10.0 -
Total capacity code of indoor units Model name
Equivalent to capacity Equivalent to HP For 3 piping
Below 18.0 Below 6.4 RBM-BY55FE
18.0 to below 40.0 6.4 to below 14.2 RBM-BY105FE
40.0 to below 70.5 14.2 to below 25.2 RBM-BY205FE
70.5 or more 25.2 or more RBM-BY305FE
Total capacity code of indoor units
Equivalent to
Equivalent to HP For 3 piping
capacity
Below 40.0 Below 14.2 RBM-HY1043FE
For 4
branches
40.0 to below 70.5 14.2 to below 25.2 RBM-HY2043FE
Below 40.0 Below 14.2 RBM-HY1083FE
For 8
branches
40.0 to below 70.5 14.2 to below 25.2 RBM-HY2083FE
Total capacity codes of outdoor units at the downstream side
Equivalent to
Equivalent to HP
capacity
Below 73.0 Below 26.0
73.0 or more 26.0 or more
Single port type
Total capacity codes of connected indoor units
Max. No. of
Equivalent to
Equivalent to HP connected indoor
capacity
unit
Below 11.2 Below 4.0 Below 5
11.2 to below 18.0 4.0 to below 6.4 Below 10
18.0 to 28.0 or less 6.4 to below 10.0 Below 10
Multi port type
Max No. of
Equivalent to Equivalent No. of
connected indoor
capacity to HP branch
unit in a branch
4
Below 18.0 Below 6.4 10
6
Remarks
Liquid side
Ø9.5 Ø6.4
Ø12.7 Ø9.5
Ø12.7 Ø6.4
Ø15.9 Ø9.5
Ø15.9 Ø9.5
Ø22.2 Ø12.7
For 2 piping
RBM-BY55E
RBM-BY105E
RBM-BY205E
RBM-BY305E
Model name
For 2 piping
RBM-HY1043E
RBM-HY2043E
RBM-HY1083E
RBM-HY2083E
Model name
RBM-BT14FE
RBM-BT24FE
Model name
RBM-Y1123FE✽
RBM-Y1803FE✽
RBM-Y2803FE✽
Model name
RBM-Y1801F4PE*
RBM-Y1801F6PE*
132-EN
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