Tightening Torque - Hitachi HNE Serie Manual De Instalación Y Funcionamiento

REFRIGERANT PIPING &
REFRIGERANT CHARGE
11.3. PIPING CONNECTION FOR OUTDOOR UNIT
1. Stop Valve are located on rear exterior side of unit. Before
connecting refrigerant piping, the protection cover of stop
valve must be removed.
Gas Valve
Liquid Valve
2. If the field-supplied piping is connected with stop valves
directly, it is recommended to use a tube bender.
Insulation material
Unit side
Insulation material
3. For gas pipe connection, use the factory supplied Flange
Pipe (Only for RASC-10HNE).
Ø 25.4 ID (1")
27

Tightening Torque

■
See tighten torque in the next table:
Valve
Pipe size
5 HP Fig A 9.53 (3/8")
10 HP Fig A 12.7 (1/2")
5 HP Fig A 15.88 (5/8")
10 HP Fig B 25.4 (1")
All manuals and user guides at all-guides.com
Field Supplied
refrigerant pipe
Insulation material
85
Size Tightening torque (N.m)
Hexagonal Wrench (Allen)
A
(Hex1)
4 mm 33~42
4 mm 40
10 mm 68~82
10 mm (*)
(Fig.A)
Plug
Tighten the cap with a
torque of (C)
Check Joint
(Only the Charging hose can
be connected)
Refrigerant Pressure
Seat Surface
(Fully closed position)
Flare
Tighten the cap with a
torque of (A)
(Fig.B)
Hex1
(To open and
close spindle
valve)
Closed before
shipment
Spindle Valve
Counterclockwise - Open
Clockwise - Close
Check Joint
(Only the Charging hose
can be connected)
Tighten the cap with a
torque of (C)

CAUTION:
- Do not apply force to the spindle valve at the end of
opening (5 N.m or smaller). The back seat construction is
not provided.
- At the test run, fully open the spindle. If not fully opened,
the devices will be damaged.
B C
33~42 14~18
15.5 9.8
14~18 8~12
49 9.8
PMGB0126A rev.2 - 11/2006
Closed before
shipment
Spindle Valve
Counterclockwise - Open
Clockwise - Close
Hex1
(To open and
close spindle
valve)
Plug
O-Ring
Tighten the cap with a
(rubber)
torque of (B)
Field-Supplied
Refrigerantion Pipe
Refrigerant Pressure
Plug
Tighten the cap
with a torque of (B)
(Attach this after
work.)
O-Ring
(rubber)
Flange
Tighten the cap with a
torque of (A)
Field-Supplied
Refrigerantion Pipe
16