Hitachi YUTAKI Series Installation And Operation Manual page 48

REFRIGERANT AND WATER PIPING

Refrigerant piping size
Piping connection size of outdoor unit & indoor unit
Model
2 HP
Ø 12.7 (1/2") (*)
2.5 HP
(3-6) HP Ø 15.88 (5/8")
8 HP
10 HP
?
N O T E
(*): The refrigerant gas piping size for 2/2.5 HP and the refrigerant liquid piping size of 2.5 HP are different between outdoor and indoor unit. Therefore,
refrigerant pipe adapters are required to connect these units. Pipe size must be installed according to the outdoor units. These pipe adapters are factory
supplied with the outdoor unit.
Model
2 HP Ø15.88→Ø12.7
2.5 HP Ø15.88→Ø12.7
5.2.1.1 Refrigerant charge before shipment (W
YUTAKI S/S COMBI
Outdoor unit model
RAS-2WHVNP
RAS-2.5WHVNP
RAS-3WHVNP
RAS-4WH(V)NPE
RAS-(5/6)WH(V)NPE
RAS-8WHNPE
RAS-10WHNPE
YUTAKI S80
Model
Outdoor unit
RAS-(5/6)WH(V)NPE
Indoor unit RWH-(4.0-6.0)(V)NF(W)E
YUTAKI M
Model
RASM-4(V)NE
RASM-(5/6)(V)NE
38 PMML0510 rev.1 - 10/2019
Pipe size
Gas pipe Liquid pipe
Ø 6.35 (1/4")
Ø 6.35 (1/4") (*)
Ø 9.52 (3/8")
Ø 9.52 (3/8")
Ø 25.4 (1")
Ø 12.7 (1/2")
Pipe adapter
Gas pipe Liquid pipe
-
Ø9.52→Ø6.35
W
0
RAS-4WH(V)NPE
Model
2.0 HP
2.5 HP
(3.0-6.0) HP
8 HP
10 HP
(kg))
0
W (kg)
0
1.4
1.5
1.7
3.3
3.4
5.0
5.3
(kg) R410A W (kg) R134a
0
3.3 -
3.4 -
- 1.9
W (kg)
0
2.8
3.1
Indoor unit
Pipe size
Gas pipe Liquid pipe
Ø 6.35 (1/4")
Ø 15.88 (5/8") (*)
Ø 9.52 (3/8") (*)
Ø 15.88 (5/8") Ø 9.52 (3/8")
Ø 9.52 (3/8")
Ø 25.4 (1")
Ø 12.7 (1/2")