Hitachi FSXN1E Series Installation And Operation Manual page 47

Piping work and refrigerant charge
Heat recovery systems (3 pipes)
Square holes at
front and back sides
Model A
RAS-8FSXN1E ∅19.05 ∅15.88
RAS-10FSXN1E ∅22.2
RAS-12FSXN1E ∅25.4
RAS-14FSXN1E
∅25.4
RAS-16FSXN1E ∅28.58 ∅22.20 ∅12.70
Piping direction
Fix the pipes adequately in order to avoid vibration and excessive
force to the valve.
1 The pipes can be installed in three directions (front, rear or
bottom side) from the bottom base. For vibration protection,
properly fix the piping connection and check that no exces-
sive force is applied to the stop valve.
Front side
Bottom base
2 Operation of the stop valve should be performed according
the specified in this manunal.
3 Connect the pipes according to the tables.
4 Completely seal the penetration part at the bottom of the
pipes with insulation in order to prevent rain water from enter-
ing the conduit.
33
PMML0294A_rev.2_02-2014.indb 33
Refrigerant gas piping
connection
(Low pressure)
Refrigerant gas piping connection
(High/Low pressure)
Refrigerant liquid piping connection
Refrigerant piping and
wiring connection holes
(knockout holes)
Refrigerant gas piping connection
(High/Low pressure)
Refrigerant gas piping connection
(High/Low pressure)
Refrigerant liquid piping connection
B C D E F
∅9.52
150 150 340 205
∅19.05 ∅9.52
∅22.20 ∅12.70
170 170 325 200
∅22.20 ∅12.70
Rear side
Bottom side
PMML0294A rev.2 - 07/2014
Refrigerant piping outlet
(Low pressure gas)
2 Control cable outlets
(∅33 knockout hole)
(mm)
Model A
G
RAS-5FSXNH(E) ∅15.88 ∅12.70
RAS-6FSXNH(E) ∅19.05 ∅15.88
RAS-8FSXNH(E) ∅19.05 ∅15.88
RAS-10FSXNH(E) ∅22.2
RAS-12FSXNH(E)
∅25.4
For heat pump systems (2 pipes)
For piping from bottom base
Gas pipe
Piping cover
(attached to unit)
Cover the gap
with insulations
For heat recovery systems (3 pipes)
For piping from bottom base
Gas pipe
Piping cover
(attached
to unit)
Cover the gap
with insulations
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)
B C D E
∅9.52
150 150
∅9.52
∅9.52
∅19.05 ∅9.52 170 170
∅22.20 ∅12.70
For piping from front or
rear side piping cover
Liquid pipe
Cover the gap with a
packing (field-supplied)
Liquid pipe
Gas pipe
For piping from front or
rear side piping cover
Liquid pipe
Cover the gap with a
packing (field-supplied)
Gas pipe Liquid pipe
(mm)
F G
340 205
Piping
cover
Piping
cover
14/07/2014 12:28:23