En-4
Indoor unit connection pattern
Indoor unit
A
B
C
1
7,000
7,000
–
2
9,000
7,000
–
3
12,000
7,000
–
4
15,000
7,000
–
5
18,000
7,000
–
6
9,000
9,000
–
7
12,000
9,000
–
8
15,000
9,000
–
9
18,000
9,000
–
10
12,000
12,000
–
11
15,000
12,000
–
12
7,000
7,000
7,000
13
9,000
7,000
7,000
14
12,000
7,000
7,000
15
9,000
9,000
7,000
16
9,000
9,000
9,000
Outdoor port
Connectable model name
Standard port size [in.(mm)]
C
1/4 (6.35) / 3/8 (9.52)
7 – 12
B
1/4 (6.35) / 3/8 (9.52)
7 – 12
A
1/4 (6.35) / 1/2 (12.70)
7 – 12
*1)
/15/18
*1) When connecting models 7–12 to the outdoor unit, the included adapter is necessary.
For more information, refer to “4.1.3. How to use adapter”.
Port C ø1/4 in., ø3/8 in. (ø6.35 mm, ø9.52 mm)
Port B ø1/4 in., ø3/8 in. (ø6.35 mm, ø9.52 mm)
Port A ø1/4 in., ø1/2 in. (ø6.35 mm, ø12.70 mm)
2. 4. 4. Limitation of refrigerant piping length
CAUTION
The total maximum pipe lengths and height difference of this product are shown in the
table.
If the units are further apart than this, correct operation cannot be guaranteed.
Total max. length (a+b+c)
230 ft. (70 m)*
1
Max. length for each indoor unit
(a, b or c)
82 ft. (25 m)
Max. height difference between
outdoor unit and each indoor unit
(H1)
49 ft. (15 m)
Max. height difference between
indoor units (H2)
33 ft. (10 m)
Min. length for each indoor unit
(a, b or c)
16 ft. (5 m)
Total min. length (a+b+c)
49 ft. (15 m)
*1 If the total piping is longer than 98 ft (30 m), additional refrigerant charging is neces-
sary. (For more information, refer to “6.2 Additional charging”.)
OUTDOOR UNIT
：
18 type
a
b
H1
H1
H2
UNIT B
7-12
OUTDOOR UNIT
INDOOR UNITS
Power supply cable
Power source
208/230 V ~ 60 Hz
Connection cable
Refrigerant pipe
UNIT A
7-12
2. 4. 5. Connectable indoor unit capacity type
CAUTION
The total capacity of the indoor units connected must be between 14,000 and 21,000
BTU.
Connection patterns are restricted. Normal operation is not guaranteed if connected
pattern in the combination not listed below. The product may be damaged. Surely
connect in accordance with the combination in the following connection pattern.
•
To install an indoor unit, refer to the installation instruction sheet included with the
indoor unit.
Indoor unit connection pattern
Indoor unit
A
B
1
7,000
7,000
2
9,000
7,000
3
12,000
7,000
4
9,000
9,000
5
12,000
9,000
Outdoor port
Connectable model name
Standard port size [in. (mm)]
B
1/4 (6.35) / 3/8 (9.52)
7 – 12
A
1/4 (6.35) / 3/8 (9.52)
7 – 12
Port B ø1/4 in., ø3/8 in. (ø6.35 mm, ø9.52 mm)
Port A ø1/4 in., ø3/8 in. (ø6.35 mm, ø9.52 mm)
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2014/12/19 14:57:15
