Refrigerant Piping - Toshiba RBM-Y1124FE Installationsanleitung

5

REFRIGERANT PIPING

If refrigerant gas has leaked during the installation work, ventilate the room immediately.
If the leaked refrigerant gas comes in contact with fire, noxious gas may be generated.
After the installation work, confirm that refrigerant gas does not leak.
If refrigerant gas leaks into the room and flows near a fire source, such as a fan heater, cooking stove or heating
unit, noxious gas may be generated.
Permissible pipe length and permissible height difference
The length of a connection pipe to the indoor unit should be 50 m or less.
For details, refer to the installation manual attached to the outdoor unit.
REQUIREMENT
When the refrigerant pipe is long, set the support brackets to fix the pipe at intervals of 2.5 to 3m.
If the pipe is not fixed, noise may be generated.
EN-47
WARNING
Piping dimensions
Outdoor unit
(1)
Single Indoor unit connection
Outdoor unit
(1)
Multi indoor unit connection
Outdoor unit side pipe size (1)
Flow Selector unit
Total capacity codes of indoor units
at the downstream side
Suction gas pipe
Outdoor unit side pipe size
Discharge gas pipe
(mm)
Liquid pipe
Indoor unit side pipe size (2)
Capacity rank Equivalent to HP
005 to 012 0.6 to 1.25
015 to 018 1.7 to 2.0
024 to 056 2.5 to 6.0
072 to 096 8.0 to 10.0
Indoor unit side pipe size (3)
Total capacity codes of indoor units at the downstream side
Equivalent to capacity
Below 18.0
18.0 to below 28.0
Y-shaped branching joint (4)
Total capacity codes of indoor units at the downstream side
Equivalent to capacity
Below 18.0
18.0 to below 28.0 6.4 to below 10.0
24
FS unit
(2)
indoor unit
FS unit (4) (3) (4) (2)
(3)
(2) (2)
RBM- Y1124FE Y1804FE
kW Below 11.2 11.2 to below 18.0 18.0 to 28.0 or less
HP Below 4.0 4.0 to below 6.4 6.4 to 10.0 or less
Φ15.9 Φ15.9
Φ12.7 Φ12.7
Φ9.5 Φ9.5
Length of piping Gas side Liquid side
15m or less real length Φ9.5
Exceeds 15m real length Φ12.7
15m or less real length Φ12.7
Exceeds 15m real length Φ15.9
– Φ15.9
– Φ22.2
Suction gas side
Equivalent to HP
Below 6.4 Φ15.9
6.4 to below 10.0 Φ22.2
Y-shaped branching joint
Equivalent to HP Model name
Below 6.4 RBM-BY55E
RBM-BY105E
indoor unit
Y2804FE
Φ22.2
Φ19.1
Φ12.7
Φ6.4
Φ9.5
Φ6.4
Φ9.5
Φ9.5
Φ12.7
Liquid side
Φ9.5
Φ12.7
EN-48