Hitachi FSXNHE Serie Installations- Und Betriebshandbuch Seite 36

Piping work and refrigerant charge

Connection position of outdoor unit pipes
Refrigerant piping outlet
(Low pressure gas)
(Knockout square hole)
2 control cable outlets
(∅33 knockout hole)
Fit and secure refrigerant pipes correctly to prevent vibrations and strain on the stop valves.
The pipes may be fitted in three directions (front, rear or inferior) from the base of the unit.
Remove the cover of the gas and liquid pipes -H- and connect using the accessories factory-supplied with the unit: see on chapter
Accessories factory-supplied with the
Fit the cover on the pipes and completely seal around them and the cover to prevent the entrance of water, rodents and dirt.

Accessories factory-supplied with FSXN1E units
Accessory
Connection for
(A) refrigerant gas
(high/low) pipe
Connection for
Accessory
(B) refrigerant gas
pipe
(high/low) pipe
Connection for
(C) refrigerant liquid
pipe
For fixing power source
Cord clamp
cable
For power source cable
outlet (bottom base,
feet)
For power source cable
Rubber
outlet (piping cover)
bush
For transition wire outlet
(bottom base, feet)
For transition wire outlet
(piping cover)
Screw
(1 for fixing cord clamp, 2 for spare)
Combination
For identifying
unit model
combination unit model
label
22
PMML0294A_rev.2_02-2014.indb 22
Power source cable outlet
(∅65 knockout hole)
65 190
110
130 108
82 250
Refrigerant piping outlet
(High/low pressure gas, liquid)
(knockout square hole)
unit.
8HP 10HP
∅22.2→∅15.88 ∅22.2→∅19.05
∅22.2→∅19.05
-
×2
×2
×1
×2
×3
PMML0294A rev.2 - 07/2014
A
C
D
E
F
G
H
I
12HP 14HP
-
∅25.4→∅22.2
-
∅22.2→∅25.4
-
∅9.52→∅12.7
×2 ×2
×2 ×2
×1 ×1
×2 ×2
×3 ×3
A
Front
B Rear
C Lower side
D Base
B
E Liquid pipe
F Gas pipe (high pressure)
Gas pipe (low pressure) (only for heat
G
recovery systems, with CH units)
Cover of refrigerant gas and liquid
H
pipes
I Cover insulation
16HP Remarks
Only for heat
recovery system
∅25.4→∅22.2
* Low for heat
recovery system
-
* High/Low for
∅25.4→∅28.58
heat pump system
- -
×2 ×2
×2 ×2
×1 ×1
×2 ×2
×3 ×3
∅58
∅32
∅70
∅38
14/07/2014 12:28:12