5/8
56408015-02
MOUNTING
Whether floor or wall mounted, it is essential that the mounting surface is capable of supporting the unit
weight
.
Leave space around the unit for air circulation and access for installation and maintenance.
NOTE: Please check this before installation.
MAXIMUM EQUIVALENT PIPE LENGTHS 15m
1.
Performance is based on 7.5m pipe runs. Correctly sized pipes for each installation will result in no
significant loss of capacity on extended pipe runs up to 15m.
2.
In calculating equivalent lengths of pipe runs, the effect of bends and fittings must be taken into
account. The table below covers the fittings most likely to be encountered in this installation.
The equivalent lengths of all the fittings in a pipe run should be added together and the total added to
the actual pipe length in order to calculate the total equivalent length.
3.
Use the shortest possible route, avoiding sharp bends.
4.
Completely insulate the suction line, fully over the indoor unit drain tray.
FITTING LOSSES, in equivalent straight lengths of pipe (m).
FITTING
Pipe Size OD
To calculate the total equivalent
length, the equivalent lengths of all
fittings in a pipe run must be added to
the actual length of pipe in the run:
these are the fittings most likely to be
used.
R = Radius of bend
d = Diameter of tube
C = Centres of bend
3/8"
1/2"
5/8"
45° Bend
0.12
0.15
0.18
90° Bend R/d = 1
0.37
0.43
0.49
90° Bend R/d = 1.5
0.24
0.27
0.30
180° Bend R/d = 1.5
0.73
0.91
1.10
180° Bend C/d = 2.5
0.46
0.55
0.64
90° Elbow
0.67
0.85
1.04
A. SUCTION AND LIQUID/EXPANSION LINES:
The expansion capillary is located in the outdoor unit and the equivalent pipe run is 15m maximum, including
a maximum lift of 7.5m. Fully insulate the suction and liquid/expansion line. Ensure the suction pipe is
insulated well over the drain tray at the indoor unit. Liquid lines should be routed to avoid hot areas. This
prevents flash gas forming, which may result in erratic control of liquid refrigerant to the evaporator
.
MAXIMUM EQUIVALENT LENGTH
OF SUCTION LINE PIPE SIZES
(m)
LIQUID/EXPANSION LINE
TOTAL CHARGE
(kgs) for 7.5m
supplied in 17
series units only
SYSTEM
1/2"
5/8"
1/4"
3/8"
-
CX(E)A30 + CKA 35
15
-
15
-
0.724
CX(E)A50 + CKA 35
15
-
15
-
0.856
CX(E)A50 + CKA 50
15
-
15
-
1.306
CX(E)A70 + CKA 70
-
15
-
15
1.882
CKA PIPEWORK
1500 min air off
100 min
100 min
600 min
CKA INSTALLATION
