Hitachi RAS-10FSXN1E Bedienungsanleitung Seite 30

PIPING WORK AND REFRIGERANT CHARGE
Liquid valve
Tighten the flare nut for liquid stop valve according to the following torque. If an excessive force is applied to the flare nut, the
refrigerant leakage may occur from the spindle part.
Details of stop valves
(Put two spanners as shown in the right figure when the piping is removed and attached. If not, the refrigerant leakage may occur.)
Two spanners work
!
C A U T I O N
• Do not apply an excessive force to the spindle valve after fully opening the spindle. The back seat construction is not provided.
• At the test run, fully open the spindle. If it is not fully opened, the devices will be damaged.
Gas valve
Hexagonal wrench
To open or close
spindle valve
Cap
Tightening torque: 49.0 - 58.0 N.m
Spindle valve
Counterclockwise...Open
Clockwise...............Close
Tightening torque: Ⓐ N.m

Refrigerant pipe connection
For heat pump systems (2 pipes)
RAS-(8/16)FSXN1E
RAS-(5-8)FSXNHE
B
A
C
D
E
G
F
20 PMML0392B rev.1 - 07/2016
Do not put two spanners here.
Refrigerant leakage may occur.
Tightening work for stop valve (liquid)
Check joint for service port
Tightening torque: 9.0 - 14.0 N.m
Refrigerant
pressure
Closed upon factoty shipping
Model
RAS-(8-12)FSXN1E
RAS-(5-12)FSXNHE
RAS-(14/16)FSXN1E
RAS-(10/14)FSXN1E
RAS-10FSXNHE
B
A
C
D
E
F
I
H
5 ~ 12 HP
Flare nut
Check joint for service port
Only the charging hose for
R410A can be connected.
Tightening torque: 14.0 - 18.0 N.m
Cap
Tightening torque: 33.0 - 42.0 N.m
O-ring
Hexagonal wrench
To open or close
spindle valve
Spindle valve
Counterclockwise...Open
Clockwise...............Close
Tightening torque: 7.0-9.0 N.m
Refrigerant piping
Tightening Torque (N.m)
A B
18.0 - 22.0 33.0 - 42.0
25.0 - 31.0 50.0 - 62.0
RAS-12FSXN1E
A
RAS-12FSXNHE
B
B
A
C
C
D
D
E
J
G
F
E
G
H
I
J
Do not put two
spanners here
14 / 16 HP
Put two spanners here
Flare nut
Liquid valve
Flare nut
Tightening torque: Ⓑ N.m
Stop valve (Low pressure gas)
Stop valve (High/low pressure gas)
Stop valve (Liquid)
Flaring
Liquid pipe (field-supplied)
Accessory pipe (B)
90º Elbow B (field-supplied)
90º Elbow A (field-supplied)
High/low pressure gas pipe (field-supplied)
Accessory pipe (C)
Refrigerant
pressure