Selection Of Refrigerant Piping With Pmv Kit - Toshiba MCY-MHP0404HT-E Engineering Data Book

3
Refrigerant piping design

3-5. Selection of refrigerant piping with PMV Kit

Gas pipe
Main pipe
No. Piping parts Name
Outdoor unit
(1) Main pipe
1st branching
section
Branching section
(2) Branching pipe
Branching section
Branching section
Indoor unit
(3)
connecting pipe
Indoor unit
Y-shaped
(4) Branching section
branching joint
Branching
(5) Branching section
header
(6) PMV Kit PMV Kit
Outdoor unit
Liquid pipe
1st branching Branching Branching
section pipe header
Branching
pipe
Size of main pipe
Outdoor unit capacity type
0404 type
0504 type
0604 type
Pipe size between branching sections
Total capacity codes of indoor units at down
stream side
Equivalent to HP Equivalent to capacity
Below 2.4
2.4 to below 6.4
6.4 or more
Connecting pipe size of indoor unit
Capacity rank
005 to 012 type
014 to 018 type
024 to 056 type
Selection of branching section (Y-shaped branching joint)
Y-shape branch joint
Selection of branching section (Branching header)
Branching header
Selection of PMV Kit
Indoor unit capacity type
005 to 014 type
015 to 027 type
* PMV kit can be connected less than 027 type FCU.
Y-shaped
branching joint
Selection of pipe size
Gas pipe
15.9
15.9
19.1
Gas pipe
Below 6.6 12.7
6.6 to below 18.0 15.9
18.0 or more 19.1
Gas pipe
9.5
12.7
15.9
Model name
RBM-BY55E
Model name
For 4 branches RBM-HY1043E
For 8 branches RBM-HY1083E
Model name
RBM-PMV0362E
RBM-PMV0902E
20
PMV Kit
Indoor
unit
Indoor
unit
Remarks
Liquid pipe
Same as connecting pipe
9.5
size of the outdoor unit.
9.5
9.5
Pipe size differs based on the
total capacity code value of
indoor units at the
Liquid pipe
downstream side. If the total
value exceeds the capacity
9.5
code of the outdoor unit,
9.5 apply the capacity code of the
outdoor unit.
9.5
Liquid pipe
6.4
6.4
9.5