9/20
55908014-23
B. USING SUCTION AND EXPANSION LINES
The expansion assembly must be removed from the indoor unit and connected to the outdoor unit allowing a
pipe run of up to 80m, including a maximum lift of 20m (CKC20 maximum 50m with 7.5m lift).
CX(E) units only, remove the right hand panel cover plate from the indoor unit and remove the expansion
assembly. [Make good the gap using Extended Pipe Run Kit 55900709 (30,40,50), 55900710 (70).]
Fit the expansion assembly onto the outdoor unit liquid line service valve. Fully insulate both the suction and
expansion lines, including the expansion device: ensure the pipes are insulated well over the drain tray at the
indoor unit.
CX(E) units only, remove the right hand panel cover plate from the indoor unit and remove the expansion assembly.
[Make good the gap using Extended Pipe Run Kit 55900709 (30,40,50), 55900710 (70,90).]
PIPE CONNECTIONS
Units are supplied with the following male flare connections (sizes in inches):
SYSTEM
3/8"
1/2"
5/8"
3/4"
1/4"
3/8"
1/2"
CX(E)40 + CKC20
7.5
20
-
-
20
-
-
CX(E)50 + CKC40
-
15
20
-
-
20
-
CX(E)70 + CKC60
-
7.5
18
20
-
20
-
CX(E)90 + CKC80
-
-
11
20
-
20
-
MAXIMUM EQUIVALENT LENGTH OF
SUCTION LINE PIPE SIZES (m)
LIQUID LINE
SYSTEM
3/8"
1/2"
5/8"
3/4"
7/8"
1 - 1/8"
3/8"
1/2"
5/8"
CX(E)30 + CKC20
7.5
23
50
-
-
-
50
-
-
CX(E)40 + CKC30
-
15
50
80
-
-
7.5
80
-
CX(E)50 + CKC50
-
7.5
18
50
80
-
7.5
50
80
CX(E)70 + CKC80
-
-
11
30
80
-
-
50
80
CX(E)90 + CKC90
-
-
10
25
55
80
-
20
80
SYSTEM
3/8"
1/2"
5/8"
3/4"
7/8"
1 - 1/8"
3/8"
1/2"
5/8"
CX(E)40 + CKC20
7.5
23
50
-
-
-
50
80
-
CX(E)50 + CKC40
-
10
36
80
-
-
7.5
80
-
CX(E)70 + CKC60
-
-
14
36
80
-
7.5
50
80
CX(E)90 + CKC80
-
-
11
30
80
-
-
50
80
EXPANSION LINE
EXPANSION LINE
MAXIMUM EQUIVALENT LENGTH OF SUCTION LINE PIPE
SIZES (m)
MAXIMUM EQUIVALENT LENGTH OF SUCTION LINE PIPE
SIZES (m)
INDOOR UNIT
CX(E)30
CX(E)40
CX(E)50
CX(E)70
CX(E)90
LIQUID / EXPANSION
3/8"
3/8"
3/8"
1/2"
1/2"
SUCTION
1/2"
1/2"
1/2"
5/8"
5/8"
OUTDOOR UNIT
CKC20
CKC30
CKC40
CKC50
CKC60**
CKC80
CKC 90
LIQUID / EXPANSION
3/8"
3/8"
3/8”
3/8"
3/8”
1/2"
1/2"
SUCTION
1/2"
1/2"
1/2”
1/2"
5/8”
5/8"
5/8"
