Installation Of The Outdoor Unit - Hitachi air core 600 Installation & Maintenance Manual

Over 300mm(Single fan)
Over 600mm(Double fan)
Fig. 7.2.1
When fastening the outdoor unit with the foundation bolts,
the fasten holes position should be as shown in Fig. 7.2.2
Fig.7.2.2 The position of anchor bolts
Model
A
Capacity(Btu/h)
18K 810
25K/30K 860
36K 900
42K/48K55K 900
If the total piping is longer than 5m, an additional
refrigerant must be added. It is not necessary to add
compressor oil.
(Unit:mm)
B C D E F
281 510 310 338 150
310 542 341 368 168
340 608 368 398 146
320 535 357 385 195
Height difference H
Model
Limit Pipe
length(L)
(Btu/h)
18K
25K~55K
Additional refrigerant charge Q(g):
For 18K: Q=(L-7.5m)×15g/m
For 25K~55K: Q=(L-7.5m)×35g/m

7.2 Installation of the Outdoor Unit

Firstly select the installation site and fix the outdoor
unit. If it needs to be fixed onto the wall, make sure
that the wall and the supporting rack is strong enough
to hold the weight of the appliance.
Wiring instruction for outdoor unit
Release the set screws of the electric cover,
remove the electric cover (if the valve cover is
there either, please release it).
Connect the indoor unit wiring to the outdoor unit
panel according to the electric wiring diagrams.
Be sure to make each wire allowing 10cm longer
than the required length for wiring.
Ground the unit following local electrical
regulations.
Check the wiring with the wiring diagrams and
d
make sure it is well connected. Fix the wiring with
10×17
clips and reinstall the electric cover.
11×17
10×20
●
Fix the unit with wire ropes to prevent overturning
12×20
in case a seasonal strong wind blows against the
unit .
31
Installation and Maintenance
Pipe length L
Indoor unit
Outdoor unit
Max. Height
difference(H)
3~25(m) 15(m)
30(m)
3~50(m)
Fig.7.3
Fig.7.4
Fill the
refrigerant
(over 7.5 m.)
15 (g/m)
35 (g/m)
Wire Ropes