Condensing Units
CU/CFCU
Condensing Units
15
Installation & Maintenance Manual : 6259626 IM V1.6.0 04/16
Electrical Information
GENERAL
A fused and isolated electrical supply of the appropriate phase, frequency and voltage
should be installed.
As standard the equipment is designed for 230V, 1 Phase, 50Hz or 400V, 3 Phase, 4 wire
50Hz to all relevant IEE regulations, British standards and IEC requirements.
All mains and interconnecting wiring should be carried out to National and Local codes.
Wires should be capable of carrying the maximum load current under non-fault conditions
at the stipulated voltage.
Avoid large voltage drops on cable runs, particularly low voltage wiring.
Once the refrigeration pipework is complete the electrical supply can be connected by
routing the cable through the appropriate casing hole and connecting the cables as per
the wiring diagram supplied with each unit.
Power to the indoor unit is normally taken from the outdoor unit. Should there be a
separate supply for each unit, a control neutral must be fitted between the indoor and
outdoor units.
ELECTRICAL DATA
– CU./CUH. 1 - 4
1
1.5
2
2.5S
2.5T
3.0
3.5
4.0
Unit Data
Nominal Run Amps
(1)
A
6.0
9.7
10.3
14.3
6.4
7.1
8.8
9.5
Maximum Start Amps
A
35.0
59.0
49.6
78.6
39.1
46.6
56.7
67.0
Control Circuit
VAC
230
230
230
230
230
230
230
230
Mains Supply
V
230/1/50
400/3/50
Rec. Mains Fuse
A
16
16
16
20
16
16
16
20
Max Incoming Mains
mm²
6
6
6
6
6
6
6
6
Compressor
Motor Rating
kW
1.1
1.7
1.7
2.5
2.5
2.9
3.7
4.0
Nominal Run Amps
(1)
A
5.5
9.4
9.6
13.6
5.7
6.4
7.8
8.2
Locked Rotor Amps
A
37.5
61.0
47.0
76.0
36.5
44.0
51.0
61.8
Crankcase Heater Rating (2)
W
24
24
40
40
40
40
65
65
Type of Start
Direct on Line
Condenser Fan
Motor Rating
kW
0.15
0.15
0.15
0.15
0.15
0.15
0.15
0.15
Full Load Amps
A
0.65
0.65
0.65
0.65
0.65
0.65
0.65
0.65
Locked Rotor Amps
A
2.60
2.60
2.60
2.60
2.60
2.60
2.60
2.60
ELECTRICAL DATA
– CUS/CUHS 5 – 12
5
6
7.5
10
12
Unit Data
Nominal Run Amps
(1)
A
11.4
13.5
15.2
21.1
26.6
Maximum Start Amps
A
68.3
100.8
103.8
131.6
146.6
Control Circuit (CUS)
VAC
230
230
230
230
230
Mains Supply
V
400/3/50
Rec. Mains Fuse
A
20
25
32
40
40
Max Incoming Mains
mm²
10
10
10
10
10
Compressor
Motor Rating
kW
4.5
5.9
6.9
8.9
11.6
Nominal Run Amps
(1)
A
8.9
11.0
12.7
16.1
21.6
Locked Rotor Amps
A
62.5
95.0
98.0
120.0
135.0
Crankcase Heater Rating
(2)
W
65
65
50
50
50
Type of Start
Direct on Line
Condenser Fan
Motor Rating
kW
0.55
0.55
0.55
0.55
0.55
Full Load Amps
A
2.50
2.50
2.50
2.50
2.50
Locked Rotor Amps
A
5.80
5.80
5.80
5.80
5.80
(1)
Nominal data based on 5
C evaporating temperature and a 35
C ambient.
(2)
Heat pumps only.
