En-6
• To minimize vibration, do not install the outdoor unit directly on the ground.
Instead, install it on top of a firm platform (such as concrete block). (Fig. B)
• The foundation base should be able to support the product and the foot width of the
product should be more than 46.5 mm.
• Depending on the installation condition, vibration during the operation of the unit may
cause noise and vibration.
Install vibration-proofing materials (such as rubber pads).
• Consider the removal space of the connection piping when installing the foundation.
• Secure the equipment firmly with anchor bolts, washers, and nuts.
Fig. B
Bolt (M10)
*Do not use a four-corner support foundation.
GOODPROHIBITED GOOD
Fig. C
When installing piping from the
bottom of the outdoor units, the
required space under the outdoor
unit ≥ 200 mm.
* Install the branch kit horizontally.
200 mm
or more
4. SYSTEM CONFIGURATION
For detailed information, refer to the Design and Technical Manual.
4.1. System confi guration
CAUTION
• When connecting multiple outdoor units, set the nearest outdoor unit to the indoor unit
on the refrigerant pipe as the primary unit.
• When connecting multiple outdoor units, install the outdoor unit with the largest
nominal system capacity nearest to the indoor unit on the refrigerant pipe, followed by
those with less nominal system capacities.
[Capacity: Primary ≥ Subordinate]
• Always keep to the limit on the total amount of refrigerant. Exceeding the limit on the
total amount of refrigerant when charging will lead to malfunction.
4.1.1 In case of 1 outdoor unit connected
(Primary)
Outdoor unit
Indoor unit
Allowable pipe length (actual pipe length)
Between primary outdoor unit and the farthest indoor
unit
165 m or less
a + f
a + p
Between the first separation tube and the farthest
indoor unit
90 m or less
f, p
(Farthest indoor unit) - (Closest indoor unit) 60 m or less
f(p) - g(q)
Total pipe length 700 m or less
Total
Allowable height difference
Between outdoor unit and indoor unit (When indoor
unit is installed below)
50 m or less
H1
Between outdoor unit and indoor unit (When outdoor
unit is installed below)
40 m or less
Between indoor units 15 m or less
H2, H3
• Total refrigerant amount: 31.5 kg or less
4.1.2 In case of 2 outdoor units connected
(Subordinate)
(Primary)
Outdoor unit
Indoor unit
Allowable pip length (actual pipe length)
Between primary outdoor unit and the farthest indoor
unit
165 m or less
a + e + f
a + e + p
Between the first separation tube and the farthest
indoor unit
90 m or less
f, p
(Farthest indoor unit) - (Closest indoor unit) 60 m or less
f(p) - g(q)
Total pipe length 1000 m or less
Total
Between outdoor unit and outdoor unit branch kit 3 m or less
a, b
Allowable height difference
Between outdoor unit and indoor unit (When indoor
unit is installed below)
50 m or less
H1
Between outdoor unit and indoor unit (When outdoor
unit is installed below)
40 m or less
Between indoor units 15 m or less
H2, H3
Between outdoor units 0.5 m or less
H4
• Total refrigerant amount: 63 kg or less
• Outdoor unit capacity: Primary ≥ Subordinate
4.1.3 In the case of 3 outdoor units connected
(Subordinate 2)
(Subordinate 1)
(Primary)
Outdoor unit
Indoor unit
Allowable pip length (actual pipe length)
Between primary outdoor unit and the farthest indoor
unit
165 m or less
a + e + f
a + e + p
Between the first separation tube and the farthest
indoor unit
90 m or less
f, p
(Farthest indoor unit) - (Closest indoor unit) 60 m or less
f(p) - g(q)
Total pipe length 1000 m or less
Total
Between outdoor unit and outdoor unit branch kit 3 m or less
a, b, c
Between the farthest outdoor unit and the first out-
door unit branch kit
12 m or less
b + d
c + d
Allowable height difference
Between outdoor unit and indoor unit (When indoor
unit is installed below)
50 m or less
H1
Between outdoor unit and indoor unit (When outdoor
unit is installed below)
40 m or less
Between indoor units 15 m or less
H2, H3
Between outdoor units 0.5 m or less
H4
• Total refrigerant amount: 94.5 kg or less
• Outdoor unit capacity: Primary ≥ Subordinate 1 ≥ Subordinate 2
9378945708-02_IM_L9.indb 69378945708-02_IM_L9.indb 6 2022/1/20 15:34:372022/1/20 15:34:37
To Next Page
Loading...
