Hitachi FSG1 Series Technical Catalogue page 281

RAS-(5/8/10/16/20)FSG
Height
difference
(m)
When the
outdoor unit
is installed
higher than
Total length between
indoor unit.
outdoor unit and each
When the
outdoor unit
DSW3 is required
is installed
lower than
indoor unit.
DSW3 : Not Set (Factory-Supplied)
(1=OFF, 2= OFF)
DSW3 : Set
(1=ON, 2 = OFF)
Figure 3
* Conditions:
Outdoor Unit
RAS-5FSG
RAS-8FSG
RAS-10FSG
RAS-16FSG
RAS-20FSG
RAS-10FXG
When the
outdoor unit
is installed
higher than
indoor unit.
When the
outdoor unit
is installed
lower than
indoor unit.
REFRIGERANT PIPING AND REFRIGERANT CHARGE
Piping
Length
indoor unit
(m)
Liquid Piping Ø
12.7
12.7
15.88
19.05
19.05
Height
difference
(m)
* Conditions:
Outdoor Unit
RAS-10FXG
RAS-(24/30)FSG1
Height
difference
(m)
When the
outdoor unit
is installed
higher than
indoor unit.
When the
outdoor unit
is installed
lower than
indoor unit.
DSW3 : Not Set (Factory-Supplied)
(1=OFF, 2= OFF)
DSW3 : Set
(1=ON, 2 = OFF)
* Conditions:
Outdoor Unit
RAS - 24 FSG1
RAS - 30 FSG1
Total length between outdoor unit
and each indoor unit
Refer to fig. 6
Figure 5
Liquid Piping Ø
12.7
Total length between
Length
outdoor unit and each
indoor unit
DSW3 is required
Figure 4
Liquid Piping Ø
19.05
22.2
<Setting of DSW3>
DSW3: Set
DSW3: Not Set
(factory-
Supplied)
DSW3: Set
Piping Length (m)
DSW3: Set
13
/5
Piping
(m)