Hitachi RAS-10FSXNPE, Instruction Manual

Page: 40 / 170

8.3.2 Accessories factory-supplied with FSXNPE units
accessory 5HP 6HP 8HP 10HP 12HP 14HP 16HP 18HP remarks
Accessory Pipe
ID22.2
→OD15.88
ID22.2
→OD19.05
ID22.2
→OD19.05
ID22.2
→OD19.05
ID22.2
→OD25.4
ID22.2
→OD28.58
OD15.88
→OD12.7
ID22.2
→OD28.58
-
ID22.2
→OD12.7
ID22.2
→OD15.88
ID22.2
→OD15.88
-
OD9.52
→OD12.7
-
ID22.2
→OD28.58
- -
Cord Clamp
For Fixing Power
Source Wire
-
Rubber Bush
For Power Source Wire
Outlet (Bottom Base,
Piping Cover)
×2 ×2 ×2 ×2 ×2 ×2 ×2 ×2
Ø70
For Transmission Wire
Outlet (Bottom Base,
Piping Cover)
×2 ×2 ×2 ×2 ×2 ×2 ×2 ×2
Ø62
For Control Wire Outlet
(Bottom Base, Piping
Cover)
×2 ×2 ×2 ×2 ×2 ×2 ×2 ×2
Ø38
Screw
×3 ×3 ×3 ×3 ×3 ×3 ×3 ×3
for Fixing
Cord Clamp
and Spare
Combination Unit
Model Label
For Indication of
Combination Unit Model
Attach to
Outdoor Unit
A (Main Unit)
Protection plastic film
?
n o t e
Please contact your HITACHI distributor if any of the accessories has not been supplied with the unit.
8.3.3 Precautions for the installation of the outdoor unit

Order of installation of the units
When the installation and piping work for the multiple outdoor
units are performed, it is required that the arrangement for
outdoor units and piping length be determined. Perform securely
the installation work according to the following restrictions. If
the arrangement for outdoor units is incorrect, it may cause
flowback of the refrigerant and result in failure of outdoor unit.
Restrictions for 2 and 3 Units Combination
1 For 2 and 3 outdoor units combination, align the outdoor
units from largest capacity to smallest as A > B > C
and outdoor unit “A” should be connected to the piping
connection kit 1.
2 The piping length between the piping connection kit 1 and
the outdoor unit should be La < Lb < Lc < 10m.
3 For maintenance, attach “Main unit label” to the service
cover (back side surface) of the outdoor unit “A”.
C C
B B
A A
L
a
L
a
L
b
L
b
L
c
L
c
> >
< <
Piping outlet
direction
Piping outlet
direction
Indoor
unit side
Piping
connection kit 1
Piping
connection kit 2
Piping con-
nection kit 2
(*)
(*)
(*)
(*)
(*): Keep the straight-line distance of 500 mm or more for piping after the piping connection kit.
Outdoor
unit
A
Outdoor
unit
B
Outdoor
unit
C
Outdoor
unit
C
Outdoor
unit
B
Outdoor
unit
A
Indoor
unit side
Piping
connection kit 1
PIPING WORK AND REFRIGERANT CHARGE
PMML0479 rev.4 - 11/2018 18