Page 1
55008351-23
INSTALLATION & TECHNICAL MANUAL
MARSTAIR REFRIGERATION CONDENSING UNITS (MRC+)
Page 2
2/27
55008351-23
CONTENTS
PAGE
DIMENSIONS & WEIGHTS (packed & unpacked) & SPECIFICATION.
3
PERFORMANCE DATA.
4-11
MOUNTING, DIMENSIONS & WEIGHTS.
12-13
PIPEWORK.
13-14
ELECTRICAL & FUSES.
14-16
REFRIGERANT.
17-18
END OF LIFE REQUIRMENTS.
19
ECO DESIGN INFORMATION TABLES.
20-27
COMPONENT IDENTIFICATION MRC+.
28-29
1. TEV LTD recommend that personnel working on this equipment be skilled and fully conversant
with the appropriate Refrigeration and Electrical practices and have sound knowledge of current
Industrial Safe Working practices.
2. These units are supplied with a holding charge of oxygen free nitrogen and polyolester oil.
Do not mix oils or refrigerants.
3. These units when installed contain live electrical components, moving parts and refrigerant under
pressure. Always site out of reach of children and protect from vandalism.
4. The data plate only gives information for the outdoor unit. For system details add input power and
current of indoor and outdoor unit, including any heater load.
5. FUSES - for recommended fuse size see page 12.
6. The refrigerant used should be identified by locating a refrigerant label on the unit case
INDEX
GENERAL
NOTE
IF MECHANICAL PUMP DOWN OPERATION IS REQUIRED CONNECT A LINK WIRE
BETWEEN TERMINALS L1 & 3.
IF THIS LINK IS USED THEN TERMINAL 5 CAN NOT BE USED AS AN ALARM FACILITY
Page 3
3/27
55008351-23
UNPACKED
MRC+ CONDENSING UNITS
MODEL
15
20
30
40
45
50
60
80
90
100
130
150
165
180
HEIGHT
620
620
620
620
720
720
720
720
820
820
1080
1080
1080
1275
WIDTH
900
900
900
900
1000
1000
1000
1000
1000
1000
1000
1000
1000
1100
DEPTH
300
300
300
300
350
350
350
350
350
350
425
425
425
425
1 Ph kg
46
47
48
53
61
64
65
66
76
81 - 103 - -
3 Ph kg
-
-
48
53 - 64
65
66
76
81
101
103
103
118
PACKED
MRC+ CONDENSING UNITS
MODEL
15
20
30
40
45
50
60
80
90
100
130
150
165
180
HEIGHT
620
620
620
620
720
720
720
720
820
820
1080
1080
1080
1280
WIDTH
980
980
980
980
1090
1090
1090
1090
1090
1090
1090
1090
1090
1215
DEPTH
340
340
340
340
390
390
390
390
390
390
465
465
465
465
1 Ph kg
48
49
50
55
63
66
67
68
78
85 - 107 - -
3 Ph kg
-
-
50
55 - 66
67
68
78
85
105
107
107
123
MRC+
15
20
30
40
45
50
60
80
90
100
130
150
165
180
Nominal cooling
capacity (-10°C
evaporating
temp & 32°C
ambient temp)
R404A
kW
1Ph
3Ph
1.1 - 1.4 - 2.0
2.0
2.9
2.9
2.9
2.9
3.9
3.9
4.6
4.6
5.5
5.5
6.4
6.4
7.1
7.1 - 8.1
8.8
8.8 - 10.5 - 11.6
Operating weight
kg
1Ph
46
47
48
53
61
64
65
66
76
81 - 103 - -
3Ph - -
48
53 - 64
65
66
76
81
101
103
103
118
1 Ph (230V 50Hz) compressor load only (at nominal cooling capacity)
Power (nominal)
kW
0.82
1.12
1.42
2.07
1.43
2.03
2.26
2.61
3.03
3.92 - 4.52 - -
Starting current
LRA
A
23
28
36
50
35
58
61
76
110
114 - 142 - -
Nominal current
FLA
A
5.9
6.9
8.1
10.2
10.0
8.9
9.8
11.5
16.9
20.5 - 32.3 - -
3Ph (400v 50Hz) compressor load only (at nominal cooling capacity)
Power (nominal)
kW - -
1.42
2.07 - 2.03
2.26
2.61
3.03
3.92
4.46
4.52
5.29
5.82
Starting current
LRA
A - -
18
22 - 26
32
40
48
51
62
68
71
71
Nominal current
FLA
A - -
3.6
4.8 - 4.2
4.2
4.9
7.1
7.2
7.7
8.7
9.5
11.9
Sound Pressure Levels (SPL) at 10m distance in free field conditions @ 27°C external ambient.
Fan speed max
dBA
34
34
34
34
33
33
33
34
37
38
37
37
37
39 NR
28
28
28
28
27
27
27
27
30
31
30
30
30
32
Condenser fan (1Ph 230V 50Hz)
Airflow (max
speed)
m³/s
0.40
0.40
0.97
0.97
0.97
0.97
0.97
0.97
0.97
0.97
1.85
1.85
1.85
1.85
Fan motor rating
kW
0.65
0.65
0.13
0.13
0.13
0.13
0.13
0.13
0.13
0.13
2x0.13
2x0.13
2x0.13
2x0.13
Nominal current
FLA
A
0.4
0.4
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
2x0.6
2x0.6
2x0.6
2x0.6
Fans: No. x
diameter
#x
mm
1x350
1x350
1x457
1x457
1x457
1x457
1x457
1x457
1x457
1x457
2x457
2x457
2x457
2x457
Fans max speed
r.p.m
940
940
940
940
940
940
940
940
940
940
940
940
940
940
DIMENSIONS AND WEIGHTS
SPECIFICATION DETAILS
Page 4
4/27
55008351-23
MRC+ 15 – 180 CAPACITIES – 1 & 3 Phase
(Return gas temperature 20°C, 0°K sub cooling)
R407A
MODEL
Ambient
Temp °C
HP
EVAPORATING TEMPERATURE °C
-15
-10
-5 0 5 7 10
COOLING CAPACITY AND POWER INPUT kW
CAP.
POWER
CAP.
POWER
CAP.
POWER
CAP.
POWER
CAP.
POWER
CAP.
POWER
CAP.
POWER
MRC+
15
27
1/2
0.90
0.52
1.20
0.58
1.55
0.65
1.90
0.71
2.37
0.77
2.39
0.80
2.45
0.82
30
0.84
0.52
1.14
0.58
1.47
0.65
1.81
0.72
2.25
0.79
2.28
0.81
2.32
0.85
32
0.81
0.52
1.09
0.58
1.42
0.66
1.74
0.77
2.19
0.80
2.19
0.83
2.24
0.86
35
0.74
0.53
1.03
0.58
1.34
0.67
1.65
0.75
2.05
0.83
2.07
0.85
2.10
0.89
MRC+
20
27
5/8
1.17
0.68
1.56
0.76
2.01
0.85
2.47
0.94
3.07
1.02
3.11
1.05
3.18
1.09
30
1.10
0.68
1.47
0.77
1.91
0.86
2.35
0.95
2.92
1.04
2.96
1.07
3.01
1.12
32
1.05
0.68
1.42
0.77
1.84
0.86
2.26
1.01
2.84
1.06
2.85
1.09
2.91
1.14
35
0.96
0.68
1.34
0.78
1.73
0.88
2.14
0.99
2.66
1.09
2.68
1.13
2.72
1.18
MRC+
30
27
1 3/8
1.74
0.94
2.23
1.04
2.78
1.15
3.32
1.26
4.03
1.36
4.07
1.43
4.40
1.50
30
1.64
0.94
2.11
1.05
2.64
1.16
3.16
1.28
3.83
1.39
3.87
1.46
4.16
1.55
32
1.57
0.95
2.03
1.06
2.53
1.17
3.03
1.35
3.74
1.41
3.72
1.49
4.02
1.58
35
1.44
0.95
1.91
1.07
2.39
1.20
2.87
1.33
3.50
1.45
3.50
1.54
3.75
1.64
MRC+
40
27
1 1/2
2.52
1.40
3.18
1.50
3.93
1.64
4.67
1.80
5.46
1.99
5.75
2.08
6.25
2.21
30
2.39
1.42
3.03
1.53
3.74
1.68
4.64
1.85
5.18
2.05
5.46
2.14
5.90
2.29
32
2.31
1.43
2.92
1.56
3.60
1.70
4.28
1.97
5.04
2.10
5.25
2.19
5.68
2.34
35
2.12
1.44
2.76
1.58
3.41
1.75
4.04
1.94
4.69
2.16
4.91
2.26
5.28
2.42
MRC+
45
27
1 1/2
2.48
1.02
3.01
1.05
3.62
1.10
4.22
1.18
4.87
1.29
5.11
1.37
5.52
1.47
30
2.39
1.09
2.90
1.13
3.49
1.18
4.08
1.25
4.69
1.37
4.92
1.45
5.29
1.57
32
2.33
1.14
2.89
1.17
3.39
1.22
3.95
1.36
4.61
1.42
4.78
1.52
5.31
1.64
35
2.19
1.22
2.72
1.26
3.25
1.31
3.79
1.39
4.36
1.53
4.55
1.62
4.89
1.75
MRC+
50
27
2
3.31
1.50
4.05
1.54
4.89
1.59
5.73
1.67
6.64
1.78
6.98
1.83
7.57
1.88
30
3.20
1.60
3.90
1.65
4.72
1.70
5.54
1.78
6.39
1.89
6.73
1.93
7.26
2.02
32
3.12
1.67
3.89
1.72
4.58
1.76
5.37
1.93
6.29
1.96
6.54
2.02
7.29
2.10
35
2.92
1.79
3.66
1.84
4.39
1.89
5.15
1.98
5.94
2.10
6.23
2.14
6.71
2.24
MRC+
60
27
2 1/2
3.89
1.66
4.75
1.71
5.74
1.77
6.72
1.86
7.80
1.98
8.19
2.03
8.89
2.09
30
3.75
1.78
4.58
1.83
5.55
1.89
6.51
1.98
7.50
2.10
7.90
2.15
8.52
2.25
32
3.66
1.86
4.56
1.91
5.38
1.96
6.30
2.15
7.38
2.18
7.68
2.25
8.56
2.34
35
3.43
1.99
4.29
2.05
5.16
2.11
6.05
2.21
6.97
2.34
7.31
2.40
7.88
2.50
MRC+
80
27
3
4.63
1.90
5.65
1.96
6.84
2.02
8.00
2.13
9.28
2.27
9.75
2.33
10.58
2.41
30
4.47
2.04
5.45
2.10
6.60
2.17
7.75
2.28
8.93
2.42
9.41
2.48
10.14
2.59
32
4.35
2.14
5.43
2.20
6.40
2.26
7.50
2.48
8.78
2.52
9.14
2.60
10.18
2.70
35
4.08
2.30
5.11
2.37
6.14
2.44
7.20
2.55
8.30
2.71
8.70
2.77
9.37
2.90
MRC+
90
27
3 1/2
5.40
2.19
6.60
2.26
7.98
2.34
9.35
2.46
10.84
2.63
11.39
2.70
12.35
2.79
30
5.21
2.37
6.37
2.43
7.71
2.51
9.04
2.64
10.43
2.80
10.98
2.88
11.84
3.00
32
5.08
2.48
6.34
2.55
7.47
2.62
8.76
2.88
10.25
2.93
10.67
3.02
11.89
3.14
35
4.77
2.67
5.96
2.75
7.17
2.83
8.40
2.96
9.69
3.15
10.16
3.23
10.94
3.37
MRC+
100
27
4
6.19
2.89
7.71
2.97
9.14
3.08
10.71
3.24
12.41
3.45
13.05
3.54
14.15
3.65
30
5.97
3.09
7.29
3.17
8.83
3.27
10.36
3.43
11.95
3.64
12.58
3.73
13.57
3.89
32
5.82
3.21
7.02
3.25
8.56
3.39
10.03
3.72
11.75
3.78
12.22
3.88
13.62
4.04
35
5.46
3.43
6.83
3.53
8.21
3.63
9.63
3.80
11.10
4.03
11.63
4.12
12.54
4.30
MRC+
130
27
4 1/2
7.09
3.30
8.84
3.39
10.47
3.51
12.27
3.69
14.22
3.92
14.95
4.03
16.21
4.15
30
6.84
3.53
8.36
3.62
10.11
3.74
11.87
3.91
13.69
4.15
14.42
4.25
15.54
4.43
32
6.67
3.67
8.05
3.71
9.81
3.87
11.50
4.24
13.46
4.31
14.00
4.43
15.61
4.60
35
6.25
3.92
7.83
4.04
9.41
4.15
11.03
4.33
12.72
4.60
13.33
4.70
14.36
4.91
PERFORMANCE DATA
Page 5
5/27
55008351-23
MODEL
Ambient
Temp °C
HP
EVAPORATING TEMPERATURE °C
-15
-10
-5 0 5 7 10
COOLING CAPACITY AND POWER INPUT kW
CAP.
POWER
CAP.
POWER
CAP.
POWER
CAP.
POWER
CAP.
POWER
CAP.
POWER
CAP.
POWER
MRC+
150
27
5
7.74
3.34
9.64
3.44
11.43
3.56
13.38
3.74
15.51
3.97
16.30
4.08
17.68
4.20
30
7.46
3.57
9.11
3.67
11.03
3.78
12.95
3.96
14.93
4.20
15.72
4.30
16.95
4.49
32
7.28
3.71
8.78
3.76
10.70
3.92
12.54
4.29
14.68
4.36
15.28
4.48
17.02
4.66
35
6.82
3.97
8.54
4.09
10.26
4.20
12.03
4.39
13.87
4.66
14.54
4.76
15.67
4.97
MRC+
165
27
6
9.23
3.89
11.50
4.00
13.63
4.14
15.96
4.35
18.51
4.63
19.45
4.76
21.09
4.90
30
8.90
4.16
10.87
4.28
13.16
4.41
15.44
4.62
17.81
4.91
18.76
5.03
20.22
5.25
32
8.68
4.33
10.47
4.38
12.76
4.58
14.96
5.02
17.51
5.10
18.22
5.24
20.31
5.45
35
8.14
4.64
10.19
4.78
12.24
4.91
14.35
5.13
16.55
5.45
17.34
5.57
18.69
5.82
MRC+
180
27
7 1/2
10.20
4.27
12.71
4.39
15.06
4.55
17.64
4.78
20.45
5.09
21.50
5.23
23.31
5.39
30
9.84
4.57
12.02
4.70
14.55
4.85
17.07
5.08
19.68
5.39
20.73
5.53
22.35
5.77
32
9.60
4.76
11.57
4.82
14.10
5.04
16.53
5.52
19.35
5.61
20.14
5.77
22.44
6.00
35
8.99
5.11
11.26
5.26
13.53
5.40
15.86
5.65
18.29
6.00
19.17
6.14
20.66
6.41
Page 6
6/27
55008351-23
MRC+ 15 – 180 CAPACITIES – 1 & 3 Phase
(Return gas temperature 20°C, 0°K sub cooling)
R407F
MODEL
Ambient
Temp °C
HP
EVAPORATING TEMPERATURE °C
-15
-10
-5 0 5 7 10
COOLING CAPACITY AND POWER INPUT kW
CAP.
POWER
CAP.
POWER
CAP.
POWER
CAP.
POWER
CAP.
POWER
CAP.
POWER
CAP.
POWER
MRC+
15
27
1/2
0.88
0.58
1.19
0.64
1.54
0.71
1.93
0.76
2.37
0.84
2.42
0.86
2.49
0.81
30
0.83
0.59
1.12
0.64
1.46
0.72
1.81
0.79
2.26
0.86
2.30
0.88
2.37
0.92
32
0.79
0.59
1.07
0.64
1.40
0.72
1.74
0.80
2.21
0.87
2.22
0.90
2.29
0.94
35
0.74
0.58
1.01
0.64
1.32
0.74
1.64
0.82
2.05
0.90
2.08
0.92
2.14
0.97
MRC+
20
27
5/8
1.15
0.76
1.54
0.84
2.00
0.93
2.50
1.01
3.08
1.11
3.14
1.14
3.23
1.18
30
1.07
0.76
1.45
0.85
1.89
0.94
2.34
1.04
2.93
1.13
2.99
1.16
3.07
1.21
32
1.03
0.77
1.39
0.86
1.81
0.95
2.26
1.06
2.87
1.15
2.88
1.19
2.97
1.24
35
0.96
0.76
1.31
0.86
1.71
0.97
2.13
1.08
2.66
1.19
2.70
1.23
2.77
1.29
MRC+
30
27
1 3/8
1.72
1.05
2.20
1.15
2.75
1.26
3.36
1.34
4.05
1.47
4.11
1.54
4.47
1.62
30
1.61
1.06
2.08
1.16
2.61
1.28
3.15
1.40
3.84
1.51
3.91
1.58
4.24
1.67
32
1.54
1.06
1.99
1.17
2.50
1.29
3.03
1.42
3.76
1.53
3.76
1.62
4.09
1.71
35
1.44
1.06
1.87
1.18
2.36
1.31
2.85
1.45
3.50
1.57
3.53
1.67
3.82
1.79
MRC+
40
27
1 1/2
2.49
1.58
3.14
1.68
3.89
1.80
4.72
1.92
5.48
2.16
5.81
2.25
6.34
2.39
30
2.34
1.60
2.98
1.71
3.71
1.85
4.62
2.03
5.20
2.24
5.52
2.33
6.01
2.49
32
2.25
1.61
2.87
1.73
3.56
1.88
4.28
2.06
5.08
2.29
5.30
2.39
5.79
2.55
35
2.12
1.61
2.70
1.75
3.35
1.92
4.02
2.12
4.69
2.36
4.96
2.46
5.38
2.64
MRC+
45
27
1 1/2
2.44
1.15
2.97
1.17
3.58
1.21
4.27
1.25
4.89
1.39
5.16
1.48
5.60
1.58
30
2.35
1.23
2.86
1.25
3.46
1.29
4.06
1.37
4.71
1.49
4.97
1.57
5.39
1.70
32
2.28
1.28
2.84
1.30
3.35
1.35
3.95
1.42
4.65
1.55
4.83
1.65
5.42
1.78
35
2.19
1.37
2.66
1.39
3.20
1.44
3.77
1.52
4.36
1.66
4.59
1.76
4.97
1.91
MRC+
50
27
2
3.26
1.69
4.00
1.72
4.85
1.76
5.80
1.79
6.67
1.93
7.05
1.98
7.69
2.04
30
3.13
1.81
3.84
1.84
4.68
1.87
5.52
1.95
6.42
2.06
6.80
2.10
7.40
2.19
32
3.04
1.89
3.82
1.91
4.53
1.95
5.37
2.02
6.33
2.13
6.61
2.19
7.43
2.28
35
2.92
2.01
3.58
2.03
4.32
2.08
5.13
2.16
5.94
2.29
6.28
2.33
6.83
2.45
MRC+
60
27
2 1/2
3.83
1.88
4.70
1.90
5.69
1.95
6.81
1.99
7.82
2.14
8.27
2.20
9.02
2.26
30
3.68
2.02
4.51
2.04
5.49
2.08
6.48
2.17
7.53
2.29
7.98
2.34
8.68
2.44
32
3.57
2.10
4.48
2.13
5.31
2.17
6.30
2.25
7.43
2.38
7.76
2.44
8.72
2.55
35
3.43
2.24
4.20
2.27
5.08
2.32
6.02
2.41
6.98
2.55
7.37
2.61
8.01
2.73
MRC+
80
27
3
4.56
2.15
5.59
2.19
6.77
2.24
8.10
2.28
9.31
2.47
9.85
2.53
10.74
2.61
30
4.38
2.32
5.37
2.35
6.54
2.40
7.71
2.50
8.96
2.64
9.50
2.70
10.33
2.81
32
4.25
2.42
5.33
2.45
6.32
2.50
7.50
2.60
8.85
2.75
9.23
2.82
10.38
2.94
35
4.08
2.59
5.00
2.62
6.04
2.69
7.16
2.79
8.30
2.96
8.77
3.02
9.54
3.17
MRC+
90
27
3 1/2
5.32
2.49
6.53
2.53
7.91
2.58
9.46
2.64
10.87
2.86
11.50
2.93
12.54
3.02
30
5.11
2.69
6.27
2.72
7.63
2.78
9.01
2.90
10.47
3.06
11.10
3.13
12.06
3.27
32
4.96
2.81
6.23
2.85
7.38
2.91
8.76
3.02
10.33
3.20
10.78
3.28
12.12
3.43
35
4.76
3.01
5.84
3.05
7.05
3.13
8.36
3.25
9.69
3.44
10.24
3.52
11.13
3.69
MRC+
100
27
4
6.10
3.29
7.63
3.33
9.06
3.41
10.83
3.47
12.46
3.75
13.17
3.84
14.36
3.95
30
5.85
3.52
7.18
3.56
8.74
3.63
10.32
3.77
11.99
3.98
12.71
4.06
13.82
4.23
32
5.69
3.64
6.90
3.63
8.46
3.76
10.03
3.91
11.83
4.12
12.35
4.23
13.89
4.41
35
5.46
3.87
6.69
3.92
8.08
4.01
9.58
4.16
11.11
4.40
11.73
4.50
12.75
4.71
MRC+
130
27
4 1/2
6.99
3.73
8.74
3.78
10.38
3.87
12.41
3.95
14.27
4.26
15.09
4.36
16.45
4.49
30
6.70
4.00
8.23
4.04
10.02
4.13
11.82
4.29
13.74
4.53
14.56
4.62
15.83
4.81
32
6.51
4.15
7.90
4.13
9.69
4.28
11.50
4.45
13.56
4.69
14.15
4.81
15.91
5.01
35
6.25
4.40
7.66
4.46
9.26
4.57
10.98
4.74
12.72
5.01
13.44
5.12
14.61
5.36
PERFORMANCE DATA
Page 7
7/27
55008351-23
MODEL
Ambient
Temp °C
HP
EVAPORATING TEMPERATURE °C
-15
-10
-5 0 5 7 10
COOLING CAPACITY AND POWER INPUT kW
CAP.
POWER
CAP.
POWER
CAP.
POWER
CAP.
POWER
CAP.
POWER
CAP.
POWER
CAP.
POWER
MRC+
150
27
5
7.62
3.78
9.53
3.83
11.32
3.92
13.54
4.00
15.57
4.31
16.46
4.41
17.95
4.55
30
7.31
4.05
8.98
4.09
10.93
4.18
12.89
4.34
14.98
4.58
15.88
4.68
17.27
4.87
32
7.10
4.20
8.62
4.18
10.57
4.34
12.54
4.50
14.79
4.75
15.43
4.88
17.35
5.08
35
6.82
4.46
8.35
4.52
10.10
4.63
11.97
4.80
13.88
5.08
14.66
5.19
15.94
5.43
MRC+
165
27
6
9.09
4.41
11.37
4.47
13.50
4.57
16.15
4.66
18.57
5.03
19.64
5.15
21.41
5.31
30
8.72
4.73
10.71
4.78
13.03
4.88
15.38
5.07
17.87
5.36
18.95
5.47
20.60
5.70
32
8.48
4.91
10.28
4.89
12.61
5.07
14.96
5.26
17.64
5.56
18.41
5.70
20.70
5.94
35
8.13
5.22
9.97
5.29
12.05
5.41
14.28
5.62
16.55
5.95
17.49
6.08
19.01
6.37
MRC+
180
27
7 1/2
10.05
4.84
12.57
4.91
14.92
5.03
17.85
5.12
20.53
5.53
21.71
5.66
23.66
5.84
30
9.64
5.20
11.83
5.26
14.41
5.37
17.00
5.58
19.75
5.89
20.94
6.01
22.77
6.27
32
9.37
5.40
11.36
5.37
13.93
5.58
16.53
5.79
19.50
6.12
20.35
6.28
22.88
6.54
35
8.99
5.74
11.02
5.82
13.31
5.96
15.79
6.19
18.30
6.55
19.33
6.69
21.01
7.01
Page 8
8/27
55008351-23
MRC+ 15 – 180 CAPACITIES – 1 & 3 Phase
(Return gas temperature 20°C, 0°K sub cooling)
R404A
MODEL
Ambient
Temp °C
HP
EVAPORATING TEMPERATURE °C
-15
-10
-5 0 5 7 10
COOLING CAPACITY AND POWER INPUT kW
CAP.
POWER
CAP.
POWER
CAP.
POWER
CAP.
POWER
CAP.
POWER
CAP.
POWER
CAP.
POWER
MRC+
15
27
1/2
0.95
0.60
1.23
0.67
1.54
0.73
1.86
0.78
2.26
0.84
2.28
0.85
2.32
0.87
30
0.88
0.60
1.15
0.67
1.45
0.73
1.75
0.80
2.13
0.85
2.15
0.87
2.18
0.89
32
0.84
0.60
1.10
0.67
1.38
0.74
1.67
0.80
2.04
0.86
2.06
0.88
2.08
0.91
35
0.79
0.60
1.03
0.67
1.30
0.75
1.57
0.82
1.91
0.88
1.92
0.90
1.94
0.94
MRC+
20
27
5/8
1.23
0.79
1.59
0.87
2.00
0.95
2.41
1.04
2.93
1.01
2.96
1.13
3.01
1.16
30
1.15
0.79
1.49
0.88
1.88
0.96
2.27
1.05
2.76
1.13
2.79
1.15
2.82
1.18
32
1.09
0.79
1.43
0.88
1.80
0.97
2.17
1.06
2.65
1.14
2.67
1.17
2.70
1.20
35
1.02
0.79
1.33
0.88
1.68
0.98
2.03
1.08
2.48
1.17
2.50
1.18
2.52
1.24
MRC+
30
27
1 3/8
1.84
1.09
2.28
1.19
2.75
1.29
3.24
1.39
3.85
1.47
3.89
1.53
4.16
1.59
30
1.72
1.09
2.13
1.20
2.59
1.30
3.04
1.41
3.63
1.50
3.65
1.56
3.90
1.63
32
1.64
1.09
2.04
1.20
2.48
1.31
2.91
1.42
3.48
1.52
3.49
1.59
3.73
1.66
35
1.53
1.09
1.91
1.21
2.32
1.33
2.73
1.45
3.25
1.55
3.26
1.63
3.48
1.72
MRC+
40
27
1 1/2
2.66
1.64
3.24
1.74
3.89
1.85
4.56
1.99
5.22
2.16
5.49
2.23
5.91
2.35
30
2.51
1.65
3.06
1.76
3.67
1.89
4.47
2.04
4.90
2.22
5.15
2.30
5.53
2.42
32
2.40
1.66
2.94
1.77
3.52
1.91
4.11
2.07
4.69
2.26
4.92
2.34
5.28
2.47
35
2.25
1.66
2.75
1.80
3.30
1.95
3.84
2.12
4.36
2.32
4.58
2.41
4.89
2.54
MRC+
45
27
1 1/2
2.61
1.19
3.07
1.21
3.58
1.24
4.12
1.29
4.66
1.39
4.87
1.47
5.22
1.56
30
2.51
1.27
2.93
1.28
3.43
1.32
3.93
1.37
4.44
1.48
4.64
1.55
4.96
1.66
32
2.43
1.32
2.91
1.33
3.31
1.37
3.80
1.43
4.29
1.53
4.48
1.62
4.94
1.73
35
2.32
1.41
2.71
1.43
3.15
1.46
3.60
1.52
4.06
1.63
4.24
1.72
4.53
1.84
MRC+
50
27
2
3.49
1.76
4.13
1.78
4.85
1.80
5.59
1.85
6.35
1.93
6.66
1.96
7.16
2.00
30
3.35
1.87
3.95
1.89
4.63
1.91
5.34
1.96
6.05
2.04
6.35
2.07
6.81
2.13
32
3.24
1.94
3.91
1.96
4.48
1.98
5.16
2.03
5.85
2.11
6.13
2.15
6.78
2.21
35
3.09
2.07
3.64
2.09
4.26
2.11
4.90
2.16
5.53
2.25
5.80
2.28
6.21
2.35
MRC+
60
27
2 1/2
4.10
1.95
4.85
1.97
5.69
2.00
6.56
2.05
7.45
2.14
7.82
2.18
8.41
2.22
30
3.93
2.08
4.64
2.10
5.44
2.12
6.26
2.18
7.10
2.27
7.45
2.31
7.99
2.37
32
3.81
2.16
4.59
2.18
5.26
2.21
6.06
2.26
6.86
2.35
7.20
2.40
7.95
2.47
35
3.63
2.31
4.28
2.33
4.99
2.36
5.75
2.41
6.49
2.51
6.80
2.55
7.29
2.63
MRC+
80
27
3
4.88
2.24
5.77
2.27
6.77
2.29
7.81
2.36
8.87
2.47
9.31
2.51
10.01
2.56
30
4.68
2.39
5.52
2.42
6.47
2.45
7.46
2.51
8.45
2.62
8.87
2.66
9.51
2.74
32
4.53
2.49
5.46
2.52
6.26
2.55
7.21
2.61
8.17
2.72
8.57
2.77
9.47
2.85
35
4.32
2.67
5.09
2.70
5.95
2.72
6.84
2.79
7.73
2.91
8.10
2.95
8.68
3.04
MRC+
90
27
3 1/2
5.69
2.59
6.74
2.62
7.91
2.65
9.12
2.73
10.35
2.86
10.87
2.90
11.68
2.96
30
5.46
2.77
6.44
2.80
7.56
2.84
8.71
2.91
9.87
3.04
10.35
3.09
11.10
3.18
32
5.29
2.89
6.38
2.92
7.31
2.96
8.42
3.03
9.54
3.16
10.00
3.22
11.05
3.32
35
5.04
3.11
5.94
3.14
6.94
3.17
7.99
3.25
9.02
3.39
9.45
3.44
10.14
3.54
MRC+
100
27
4
6.52
3.43
7.88
3.46
9.06
3.50
10.45
3.60
11.86
3.75
12.45
3.81
13.39
3.88
30
6.25
3.63
7.38
3.67
8.66
3.70
9.97
3.80
11.31
3.95
11.86
4.01
12.72
4.12
32
6.06
3.75
7.06
3.73
8.37
3.83
9.65
3.92
10.93
4.08
11.46
4.15
12.66
4.26
35
5.78
3.99
6.81
4.03
7.95
4.07
9.15
4.16
10.33
4.33
10.83
4.39
11.61
4.52
MRC+
130
27
4 1/2
7.47
3.89
9.03
3.92
10.38
3.97
11.97
4.08
13.59
4.26
14.26
4.32
15.34
4.41
30
7.17
4.12
8.45
4.16
9.92
4.21
11.42
4.32
12.95
4.49
13.59
4.55
14.57
4.68
32
6.95
4.27
8.09
4.24
9.59
4.35
11.05
4.46
12.52
4.64
13.13
4.72
14.50
4.85
35
6.62
4.55
7.80
4.59
9.11
4.63
10.49
4.74
11.84
4.94
12.41
5.00
13.30
5.15
PERFORMANCE DATA
Page 9
9/27
55008351-23
MODEL
Ambient
Temp °C
HP
EVAPORATING TEMPERATURE °C
-15
-10
-5 0 5 7 10
COOLING CAPACITY AND POWER INPUT kW
CAP.
POWER
CAP.
POWER
CAP.
POWER
CAP.
POWER
CAP.
POWER
CAP.
POWER
CAP.
POWER
MRC+
150
27
5
8.15
3.94
9.84
3.97
11.32
4.02
13.06
4.13
14.82
4.31
15.56
4.38
16.73
4.46
30
7.82
4.17
9.22
4.22
10.82
4.26
12.46
4.37
14.13
4.55
14.82
4.61
15.89
4.75
32
7.58
4.32
8.83
4.29
10.46
4.41
12.06
4.52
13.65
4.70
14.32
4.78
15.82
4.92
35
7.22
4.60
8.51
4.65
9.94
4.69
11.44
4.80
12.91
5.00
13.53
5.07
14.51
5.22
MRC+
165
27
6
9.72
4.59
11.74
4.63
13.50
4.69
15.58
4.82
17.68
5.03
18.56
5.11
19.95
5.21
30
9.32
4.87
11.00
4.93
12.90
4.98
14.87
5.11
16.86
5.31
17.68
5.39
18.96
5.55
32
9.04
5.05
10.53
5.02
12.48
5.16
14.38
5.29
16.29
5.49
17.08
5.60
18.87
5.75
35
8.61
5.39
10.15
5.44
11.85
5.49
13.64
5.62
15.41
5.85
16.15
5.93
17.31
6.11
MRC+
180
27
7 1/2
10.74
5.04
12.98
5.09
14.92
5.16
17.22
5.30
19.54
5.53
20.52
5.62
22.05
5.73
30
10.30
5.36
12.16
5.42
14.26
5.47
16.43
5.62
18.63
5.85
19.54
5.93
20.95
6.10
32
9.99
5.56
11.64
5.52
13.79
5.67
15.90
5.82
18.00
6.05
18.88
6.16
20.86
6.33
35
9.52
5.93
11.22
5.99
13.10
6.05
15.08
6.19
17.03
6.45
17.84
6.53
19.13
6.73
Page 10
10/27
55008351-23
MRC+ 15 – 180 CAPACITIES – 1 & 3 Phase
(Return gas temperature 20°C, 0°K sub cooling)
R448A – R449A
MODEL
Ambient
Temp °C
HP
EVAPORATING TEMPERATURE °C
-15
-10
-5 0 5 7 10
COOLING CAPACITY AND POWER INPUT kW
CAP.
POWER
CAP.
POWER
CAP.
POWER
CAP.
POWER
CAP.
POWER
CAP.
POWER
CAP.
POWER
MRC+
15
27
1/2
0.83
0.53
1.10
0.61
1.41
0.67
1.74
0.73
2.17
0.80
2.21
0.81
2.28
0.85
30
0.77
0.54
1.04
0.61
1.35
0.67
1.66
0.75
2.08
0.81
2.12
0.83
2.18
0.86
32
0.74
0.54
1.00
0.61
1.29
0.68
1.60
0.74
2.01
0.81
2.05
0.84
2.10
0.88
35
0.71
0.54
0.95
0.61
1.24
0.69
1.54
0.76
1.92
0.83
1.95
0.86
2.00
0.90
MRC+
20
27
5/8
1.08
0.71
1.42
0.79
1.83
0.87
2.26
0.97
2.81
1.06
2.87
1.08
2.95
1.13
30
1.01
0.71
1.34
0.80
1.75
0.88
2.16
0.98
2.69
1.07
2.74
1.10
2.81
1.14
32
0.97
0.71
1.30
0.80
1.68
0.89
2.08
0.99
2.61
1.08
2.66
1.11
2.73
1.16
35
0.92
0.72
1.23
0.80
1.60
0.90
1.99
1.01
2.49
1.11
2.54
1.14
2.60
1.19
MRC+
30
27
1 3/8
1.61
0.98
2.04
1.09
2.52
1.19
3.04
1.30
3.69
1.40
3.77
1.47
4.08
1.55
30
1.51
0.99
1.92
1.10
2.40
1.20
2.89
1.32
3.54
1.43
3.59
1.49
3.89
1.58
32
1.45
0.99
1.86
1.09
2.32
1.20
2.80
1.33
3.43
1.44
3.48
1.52
3.77
1.61
35
1.38
1.00
1.76
1.10
2.20
1.23
2.67
1.36
3.27
1.47
3.31
1.56
3.59
1.66
MRC+
40
27
1 1/2
2.33
1.48
2.90
1.59
3.56
1.70
4.27
1.87
5.00
2.06
5.33
2.14
5.80
2.29
30
2.21
1.50
2.76
1.61
3.41
1.74
4.25
1.91
4.78
2.11
5.07
2.20
5.52
2.34
32
2.13
1.51
2.68
1.61
3.29
1.76
3.95
1.94
4.62
2.15
4.90
2.23
5.34
2.39
35
2.02
1.52
2.54
1.64
3.14
1.80
3.76
1.98
4.38
2.20
4.66
2.30
5.05
2.44
MRC+
45
27
1 1/2
2.28
1.07
2.74
1.10
3.27
1.14
3.86
1.21
4.47
1.33
4.72
1.41
5.12
1.52
30
2.21
1.16
2.64
1.17
3.18
1.22
3.73
1.28
4.33
1.41
4.56
1.48
4.95
1.60
32
2.15
1.20
2.65
1.21
3.10
1.26
3.65
1.34
4.23
1.45
4.47
1.55
4.99
1.67
35
2.09
1.29
2.50
1.31
2.99
1.35
3.52
1.42
4.08
1.55
4.31
1.64
4.67
1.77
MRC+
50
27
2
3.05
1.58
3.69
1.62
4.44
1.66
5.24
1.73
6.09
1.84
6.46
1.88
7.02
1.95
30
2.95
1.70
3.56
1.72
4.30
1.76
5.07
1.84
5.90
1.94
6.25
1.98
6.80
2.06
32
2.87
1.77
3.56
1.79
4.19
1.82
4.96
1.90
5.76
2.00
6.11
2.05
6.85
2.14
35
2.78
1.90
3.36
1.91
4.05
1.95
4.79
2.02
5.56
2.14
5.90
2.18
6.41
2.26
MRC+
60
27
2 1/2
3.59
1.76
4.33
1.80
5.20
1.84
6.15
1.92
7.14
2.04
7.59
2.09
8.25
2.16
30
3.46
1.89
4.19
1.92
5.05
1.95
5.95
2.04
6.92
2.16
7.33
2.21
7.97
2.29
32
3.37
1.97
4.18
1.99
4.92
2.03
5.82
2.11
6.76
2.23
7.18
2.29
8.04
2.39
35
3.27
2.12
3.95
2.13
4.74
2.18
5.62
2.25
6.53
2.38
6.91
2.43
7.52
2.53
MRC+
80
27
3
4.27
2.02
5.16
2.07
6.19
2.11
7.32
2.21
8.50
2.36
9.03
2.41
9.82
2.49
30
4.12
2.18
4.98
2.21
6.01
2.26
7.09
2.35
8.24
2.49
8.73
2.55
9.49
2.65
32
4.01
2.27
4.97
2.30
5.86
2.35
6.93
2.44
8.05
2.58
8.54
2.65
9.57
2.76
35
3.89
2.45
4.70
2.47
5.65
2.51
6.69
2.61
7.77
2.76
8.24
2.81
8.96
2.93
MRC+
90
27
3 1/2
5.07
2.36
6.16
2.41
7.42
2.46
8.79
2.55
10.19
2.70
10.79
2.75
11.77
2.83
30
4.90
2.53
5.95
2.58
7.18
2.65
8.50
2.73
9.86
2.87
10.44
2.93
11.36
3.03
32
4.79
2.65
5.94
2.69
7.01
2.76
8.30
2.84
9.63
2.99
10.23
3.06
11.43
3.17
35
4.63
2.86
5.62
2.91
6.76
2.96
8.01
3.06
9.27
3.21
9.82
3.27
10.65
3.37
MRC+
100
27
4
5.78
3.12
7.14
3.16
8.43
3.23
10.03
3.37
11.66
3.54
12.38
3.62
13.55
3.71
30
5.60
3.31
6.76
3.37
8.16
3.42
9.68
3.55
11.28
3.72
11.97
3.80
13.06
3.93
32
5.46
3.43
6.53
3.42
7.96
3.54
9.45
3.66
11.02
3.84
11.68
3.93
13.13
4.06
35
5.29
3.66
6.38
3.72
7.68
3.77
9.11
3.89
10.60
4.08
11.29
4.15
12.29
4.30
MRC+
130
27
4 2/5
6.98
3.54
8.63
3.58
10.10
3.65
11.88
3.79
13.82
4.01
14.67
4.10
15.98
4.23
30
6.74
3.79
8.15
3.82
9.78
3.89
11.47
4.02
13.32
4.24
14.14
4.32
15.39
4.49
32
6.57
3.94
7.84
3.92
9.54
4.03
11.19
4.17
13.03
4.38
13.82
4.49
15.49
4.65
35
6.30
4.23
7.64
4.26
9.17
4.32
10.77
4.45
12.54
4.68
13.29
4.76
14.49
4.95
PERFORMANCE DATA
Page 11
11/27
55008351-23
MODEL
Ambient
Temp °C
HP
EVAPORATING TEMPERATURE °C
-15
-10
-5 0 5 7 10
COOLING CAPACITY AND POWER INPUT kW
CAP.
POWER
CAP.
POWER
CAP.
POWER
CAP.
POWER
CAP.
POWER
CAP.
POWER
CAP.
POWER
MRC+
150
27
5
7.61
3.59
9.40
3.62
11.02
3.69
12.96
3.84
15.07
4.05
16.01
4.15
17.42
4.27
30
7.35
3.83
8.89
3.87
10.67
3.93
12.51
4.07
14.53
4.30
15.42
4.38
16.78
4.55
32
7.16
3.98
8.56
3.96
10.41
4.09
12.21
4.23
14.20
4.44
15.08
4.55
16.90
4.71
35
6.87
4.27
8.34
4.32
10.00
4.38
11.75
4.51
13.67
4.74
14.49
4.83
15.81
5.02
MRC+
165
27
6
9.02
4.13
11.12
4.19
13.09
4.28
15.43
4.46
17.93
4.73
19.02
4.83
20.81
4.99
30
8.70
4.42
10.54
4.49
12.64
4.57
14.92
4.74
17.32
5.00
18.40
5.08
20.08
5.32
32
8.49
4.60
10.18
4.58
12.33
4.74
14.54
4.93
16.96
5.18
17.95
5.32
20.23
5.52
35
8.13
4.94
9.90
5.00
11.90
5.08
14.06
5.25
16.29
5.54
17.34
5.64
18.89
5.88
MRC+
180
27
7 1/2
9.96
4.63
12.28
4.69
14.38
4.78
16.93
4.94
19.64
5.25
20.91
5.37
22.92
5.55
30
9.57
4.93
11.57
5.01
13.87
5.08
16.38
5.27
19.02
5.57
20.27
5.67
22.02
5.90
32
9.33
5.13
11.16
5.10
13.54
5.27
16.00
5.46
18.64
5.74
19.77
5.89
22.16
6.12
35
8.93
5.48
10.88
5.55
13.05
5.63
15.43
5.81
17.97
6.12
19.13
6.23
21.44
6.50
Page 12
12/27
55008351-23
MOUNTING MRC+
These units are designed to stand on a flat surface. If the unit is to be wall mounted the following kits are
available.
KIT
MRC+ 15-80
MRC+ 90-180
Mounting Bracket
55021100
55021101
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.
Dimensions in mm.
DIMENSIONS & WEIGHTS MRC+
MRC+ 15-100 (Dimensions in mm.)
MODEL
A B C D E F G
H
Weight (kg)
1 Ph
3 Ph
MRC+ 15
900
300
560
525
185
60
295
275
46
-
MRC+ 20
900
300
560
525
185
60
295
275
47
-
MRC+ 30
900
300
560
525
185
60
295
275
48
48
MRC+ 40
900
300
560
525
185
60
295
275
53
53
MRC+ 45
1000
350
660
495
250
60
345
325
61
-
MRC+ 50
1000
350
660
495
250
60
345
325
64
64
MRC+ 60
1000
350
660
495
250
60
345
325
65
65
MRC+ 80
1000
350
660
495
250
60
345
325
66
66
MRC+ 90
1000
350
760
495
250
70
345
325
76
76
MRC+ 100
1000
350
760
495
250
70
345
325
81
81
1500 min air off
100 min
100 min
600 min
MOUNTING HOLES
Page 13
13/27
55008351-23
MRC+ 130 – 180 (Dimensions in mm.)
PIPEWORK
Supplied male flare connections (sizes in inches)
Model
MRC+ 15-180
Size
15
20
30
40
45
50
60
80
90
100
130
150
165
180
Liquid
3/8
3/8
3/8
3/8
3/8
3/8
3/8
1/2
1/2
1/2
1/2
1/2
1/2
1/2
Suction
3/8
1/2
1/2
1/2
1/2
1/2
5/8
5/8
5/8
3/4
3/4
3/4
3/4
7/8*
* Brazed connections
MAXIMUM PIPE RUNS
45m maximum including 6m lift (20m MRC+ 15-20). There will be no significant loss of capacity for extended
pipe runs provided pipes are correctly sized.
CALCULATING EQUIVALENT LENGTHS
The effects of bends and fittings must be taken into account.
Pipe sizes are based on:
Minimum of 2.5 m/s (500 fpm) suction gas velocity for horizontal or downflow.
Minimum of 5.0 m/s (1000 fpm) suction gas velocity for upflow.
Maximum of 20.0 m/s (4000 fpm) suction gas.
Where vertical risers exceed 3m, oil traps must be formed in the pipe. This will help ensure that oil returns to
the compressor. Typically fit an oil trap every 3m with a trap at the bottom of the riser.
GOOD PRACTICE
▪ Keep pipe runs as short as possible.
▪ Avoid sharp bends
▪ Fully insulate both suction and liquid including mechanical connections
▪ Try to avoid running pipes through hot areas.
MODEL
A B C D E
Weight (kg)
MRC+ 130
1000
1020
495
251
100
101
MRC+ 150
1000
1020
495
251
100
103
MRC+ 165
1000
1020
495
251
100
103
MRC+ 180
1100
1215
675
211
95
118
B
60
A 10
C
D
E
MOUNTING HOLES
417
397
425
Page 14
14/27
55008351-23
PIPE SIZES
UNIT
SIZE
MAXIMUM LENGTH OF EQUIVALENT
SUCTION LINE PIPE SIZES (m)
LIQUID LINE
⅜ ½ ⅝ ¾ ⅞
1⅛
1⅜ ⅜ ½ ⅝ ¾
15
7.5
20 20
20
7.5
20 20
30 15
45
45 40 10
36
45 7.5
45
45 10
36
45 7.5
45
50
7.5
18
45 7.5
45
60
14
36
45
7.5
45
80
11
30
45 45
90
10
25
45 20
45 100
7.5
22
45 15
45 130 15
30
45
12
45
150 12
27
45 8 45
165 8
18
45
7.5
40
45
180 7.5
16
45
7.5
35
45
CONNECTING THE UNITS
1. Connecting the pipework:
a. Remove the flare nuts from the service valves and release the nitrogen holding charge by slowly
opening the valves using a 5mm or 8mm allen key.
b. Ensure the suction line is fully insulated.
c. Place the flare nuts over the incoming pipework and flare the pipe ends.
d. Connect the pipework between the units. Do not leave pipes ends, valves etc open to the
atmosphere. Always use 2 spanners when tightening the flare nuts to avoid twisting the pipes.
Use a small amount of refrigerant oil on the mating surfaces.
e. MRC+ 180 has a ⅞¨ suction pipe with brazed connections. Use a protective shield to avoid
scorching the side panel.
EVACUATING
With the valves open, connect a vacuum pump to the service ports on the outdoor unit valves. Evacuate the
interconnecting pipework and indoor unit to 1000 microns (1 Torr) or better. Allow this to be held for a
minimum of 15 minutes.
ELECTRICAL
The installer supplies mains, control and interconnecting cables: equipment must be earthed.
Wiring must be carried out in accordance with local and national codes.
Mains supply cables must be size compatible with the recommended fuse.
Cable clamps for use with stranded cables are supplied in units 15 - 100 and should be used to secure
incoming/outgoing cables. Installers must supply a method of securing solid sheathed cables.
THREE PHASE UNITS WITH SCROLL COMPRESSORS:
On 3 Ph units sizes 50 - 180 it is possible for the scroll compressor to run backwards.
This becomes obvious on start up - the compressor will not develop a normal running pressure differential
and the top will not become warm: it may be excessively noisy. If this happens, switch off the mains power
and exchange the two supply phases not connected to the indoor unit. This will correct the rotation.
FUSES: The system and its supply/interconnecting wiring must be protected by fuses, preferably High
Rupture Current (HRC) motor rated types (to BS EN60269) or miniature circuit breakers to (BS EN60898) or
local codes having similar time lag characteristics, that allow starting of the compressor yet still afford close
overcurrent protection under running conditions. The ratings below are for HRC motor rated fuses.
1PH FUSE SIZE
MRC+
15
20
30
40
45
50
60
80
90
100
130
150
165
180
FUSE
16
16
16
20
20
16
20
25
32
32 - 40 - -
3PH FUSE SIZE
MRC+
30
40
45
50
60
80
90
100
130
150
165
180
FUSE
10
10 - 10
10
10
16
16
16
20
20
25
Page 15
15/27
55008351-23
The ratings are for the outdoor unit only. Currents for the indoor units including heaters if applicable should
be noted and the fuse size increased pro-rata.
CONNECTION OF MAINS SUPPLY:
1. Ensure the isolator switch is in the OFF position.
2. Remove front panel. (3screws)
3. Isolator body is located on the inside of the right hand panel.
4. To remove the isolator body from the external switch slide the red lever downwards.
5. Release the main body and lower to the bottom of the unit near the valve panel.
6. Remove lower white plastic cover from the isolator body.
7. Remove knockout hole on the valve panel for your incoming mains supply cable.
Page 16
16/27
55008351-23
8. Route incoming mains cable through the knockout hole and wire to the required terminals and
replace lower protective cover.
9. Replace main isolator back into the switch and lock into place by sliding the red lever upwards.
10. Replace covers.
Page 17
17/27
55008351-23
R404A REFRIGERANT
Charging the System:
1. Evacuate the system and interconnecting pipework as page 8 ensuring the service valves are fully
open.
2. Allow the evacuated system to draw in the majority of the refrigerant charge.
3. The final charge should be adjusted with the system running.
4. All units are fitted with head pressure control. The link wire across the orange terminals allows the fan
to operate at full speed. THIS SHOULD BE REMOVED AFTER CHARGING
5. A random start delay of up to 1 minute occurs when mains is first applied. A 3 minute delay occurs
between successive compressor operations on all systems.
6. Refrigerant and polyolester oil should be introduced through the Schrader valve the service port on the
suction service valve on the outdoor unit. Ensure the refrigerant is the correct type, as shown on
the rating plate. R404A must always be added in the liquid state.
7. Run the system for a few minutes to allow it to stabilize. Where possible, charge to a sweat line on the
evaporator. Typical suction pressures on short lines at UK conditions, with high speed evaporator fan,
high speed condenser fan, should be; low temperature system approx 4.4 bar (65 psig).
8. Systems should not be overcharged, to avoid liquid return to the compressor
9. HEAD PRESSURE CONTROL SAGINOMIYA (RGE – ZIN4 – SH)
The head pressure controller is factory set to suit the refrigerant. It may be necessary to adjust this to
suit site conditions, to raise or lower the nominal head pressure.
a. With the system
switched off, connect
a high pressure
gauge to the liquid
line service valve.
b. Switch on the
system, and run for a
few minutes to
stabilise.
c. The head pressure should be approximately:
R404A: 210-220 psig (14.5-15.2barg) to achieve this
adjust the screw clockwise to increase pressure or
anticlockwise to decrease. Each ½ turn will alter the
pressure by approx 5 psig (0.5 barg)
Min fan speed (0 rpm) and fan cut in pressure 200 psig
(13.8 barg) are factory set and not adjustable.
NOTE: The condenser fan may stop if the operating pressure drops below 200 psig (13.8 barg)
10. HEAD PRESSURE CONTROL ALCO (FSY-42S) & SAGINOMIYA (XGE-4C)
The head pressure controller is factory set to suit the refrigerant. It may be necessary to adjust this to
suit site conditions, to raise or lower the nominal head pressure.
ALCO (FSY-42S)
a. With the system switched off, connect a high pressure gauge to the liquid line service valve.
b. Switch on the system, and run for a few minutes to stabilise.
c. The head pressure should be approximately:
Electricsbox
Headpressure
adjustmentscrew
Fancapacitor
Page 18
18/27
55008351-23
Min fan speed (0
rpm) and fan cut in
pressure 200 psig
(13.8 barg) are
factory set and not adjustable.
NOTE: The condenser fan may stop if the operating pressure drops below 200 psig (13.8 barg)
R404A: 210-220 psig (14.5-15.2barg) to achieve this remove sealing plug and insert 2mm or 5/64”
allen key into setting screw. Turn allen key clockwise (+) or counter clockwise (-) to readjust the
setting.
Do not turn setting screw more than 3 turns clockwise (+3). Use following table as a quick guideline
for setting:
Pressure changes per turn of adjusting screw:
Pressure change: 9.2 … 21.2 bar:
Clockwise ~ +2,5 bar, counter clockwise ~ -2,5 bar
After adjustment, re-insert sealing plug and make sure that it is properly fitted. IP65 protection
requires firmly sealed plug
NOTES:
Tolerances for condensing temperatures setpoint: ±2K
SAGINOMIYA (XGE-4C)
R404A: 210-220 psig (14.5-15.2barg) to achieve this turn the range adjusting screw clockwise (+)
for increasing the setting value or counter clockwise (-) for decreasing the setting value.
Pressure changes per 1 turn of adjusting screw:
Pressure change: 10 … 25bar:
Clockwise ~ +1.5 bar, counter clockwise ~ -1.5 bar
Page 19
19/27
55008351-23
ROTA-LOCKED VALVES FITTED TO RECIEVER
END OF LIFE REQUIRMENTS
Refrigerant must be recovered by a certificated technician before the plant is dismantled. Modern refrigerant
recovery machines should be able to remove well over 95% of the refrigerant in an old system.
All recovered HFC refrigerants can either be:
a) Sent for destruction by incineration at a licenced waste facility
b) Sent to a specialist plant that can re-process the old refrigerant into a gas with properties identical to
virgin refrigerant, to create “reclaimed refrigerant”
c) Given a basic cleaning process, to create “recycled refrigerant”
Given the HFC supply shortage that will be created by the phase down process, it is worth trying to send the
old refrigerant for reclamation as it may have a good residual value. If the old refrigerant is too contaminated
it cannot be reclaimed and must be sent for destruction. It is important not to mix different gases in the same
recovery cylinder – as this would render them unsuitable for reclamation.
Reclaimed refrigerant can be used in any refrigeration equipment. Recycled refrigerant must always be
used with care as it may be contaminated or of unknown composition. The use of recycled refrigerant with a
GWP above 2,500 is restricted to either (a) the organisation owning the plant from which the gas was
recovered or (b) the organisation that carried out the recovery.
OUT
IN
A
B
C
P2
P1
POSITION SPINDLE
A
B
C
FUNCTION
OUT CLOSED
ALL OPEN
P1 CLOSED
Pay attention
- P1, P2: optional gages ports.
- The positions IN - OUT could be inverted according to the
employment of client.
- The spindle must be positioned in the position B when the
valve will be connected to the unit.
Page 20
20/27
55008351-23
ECO DESIGN INFORMATION TABLES
Page 21
21/27
55008351-23
Page 22
22/27
55008351-23
Page 23
23/27
55008351-23
Page 24
24/27
55008351-23
Page 25
25/27
55008351-23
Page 26
26/27
55008351-23
Page 27
27/27
55008351-23
COMPONENT IDENTIFICATION
Page 28
28/27
55008351-23
COMPONENT IDENTIFICATION
MRC+ 15 - 100
1
LID
17
COMPRESSOR
2
CONTACTOR
18
HANDLE
3
OVERLOAD
19
FRONT ACCESS
4
HEAT EXCHANGER COIL
20
FAN GUARD
5
REAR ACCESS PANEL
21
FASCIA PANEL
6
MAINS TERMINAL COVER
22
CORNER PANEL
6a
ISOLATOR
23
SUPPORT BRACKET
7
FAN CAPACITOR
24
FAN / MOTOR ASSEMBLY
8
BULKHEAD PANEL
25
END CLAMP
9
HP SWITCH (MANUAL, OPTION)
26
TERMINAL
9a
DRIER
27
FUSE
10
RECEIVER
28
FUSE TERMINAL
11
SIGHT GLASS
29
TERMINAL (4 WAY)
11a
SERVICE VALVE (LIQUID)
30
EARTH TERMINAL
12
SERVICE VALVE (SUCTION)
31
HEAD PRESSURE CONTROL pcb
13
VALVE PANEL
32
3 MINUTE TIMER pcb
14
BASE
33
COMPRESSOR CAPACITOR
15
MOUNTING FOOT
34
ELECTRICS BOX
16
LP SWITCH
Page 29
29/27
55008351-23
MRC+ 130 – 180
1
LID
17a
SERVICE VALVE (LIQUID)
2
FUSE TERMINAL
18
SERVICE VALVE (SUCTION)
3
FUSE
19
VALVE PANEL
4
TERMINAL
20
BASE
5
TERMINAL (4 WAY)
21
MOUNTING FOOT
6
CONTACTOR
22
LP SWITCH
7
EARTH TERMINAL
23
COMPRESSOR
8
END CLAMP
24
HANDLE
9
OVERLOAD
25
FRONT ACCESS PANEL
10
HEAT EXCHANGER COIL
26
FAN GUARD
11
FAN CAPACITOR
27
FASCIA PANEL
12
MAINS TERMINAL COVER
28
CORNER PANEL
13
REAR ACCESS PANEL
29
SUPPORT BRACKET
13a
ISOLATOR
30
FAN / MOTOR ASSEMBLY
14
BULKHEAD PANEL
31
HEAD PRESSURE CONTROL pcb
15
HP SWITCH (MANUAL, OPTION)
32
POWER BOARD
15a
DRIER
33
3 MINUTE TIMER pcb
16
RECEIVER
34
COMPRESSOR CAPACITOR
17
SIGHT GLASS
35
ELECTRICS BOX
Loading...