Marstair A2LCABINETMATCH User manual

55008442-01
A2LCABINETMATCH TECHNICAL MANUAL

55008442-01
2
Section
Page
1
General Information
1A General Information
3
1B General Installation procedure
4
2
SMC Condensing Units
2A Specification
5
2B Performance Data.
6
2C Mounting, Dimensions & Weights
7
2D Pipework Installation.
9
2E Pressure Testing
11
2F Evacuating
11
2G Electrical & Fuses
11
2H Refrigerant
12
2I Condensing Unit Wiring Diagrams
14
2J Electronic Valve Driver Interface
15
2K Electronic Valve Driver Parameters
17
2L Eco Design Information Tables
22
2M Component Identification SMC+
25
2N Condensing Unit Maintenance
26
3
Refrigerated Display
Cabinet
3A General
27
3B Maintenance
27
3C System Split Schematics
28
4
System selection process
29
5
Spares
29
6
End of life requirements
29
7
Installation risk
assessment
29
CONTENTS

55008442-01
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1A GENERAL INFORMATION
Installation must be carried out in accordance with the Marstair installation manual, EN 378 and national codes and
guidance.
1. Installation work on this equipment to be completed by F Gas certified Technicians who are fully
conversant with the appropriate Refrigeration and Electrical practices and have sound knowledge of
current Industrial Safe Working practices. It is also advisable that technicians hold the ACRIB
Understanding the properties of flammable refrigerants (A2L, A2 and A3) qualification.
NOTE: it is the responsibility of the operator to ensure the technician is certified to the correct standard
(EN13313 or equivalent).
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 individual indoor or outdoor unit. For system details add input
power and current of indoor and outdoor unit, including any heater load.
5. The refrigerant used should be identified by locating a refrigerant label on the unit case
6. A suitable risk assessment of the installation must be carried out. This ensures a safe working
environment is maintained in accordance with The Dangerous Substances and Explosive Atmosphere
Regulations and the Management of Health and Safety at Work Regulations. A step by step guidance
template is provided within these instructions.
7. The condensing unit must be installed outside.
8. Systems uses R454C refrigerant which is classed as an A2L flammable gas
1 –GENERAL INFORMATION

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1B GENERAL INSTALLATION PROCEDURE
oCarry out “step by step” or full risk assessment
oEnsure that no sources of ignition are present during installation
oOnly certified natural persons should be present during the installation
oCorrect selection of tools and equipment compatible with A2L refrigerants. This should include the
following:
▪Flammable gas leak detector placed at a low level next to the service valves of the
condensing unit.
▪If adequate natural ventilation is not present throughout the installation process, then forced
ventilation should be employed via an A2L compatible or ATEX rated fan and motor.
▪When pressure testing through a refrigerant manifold, ensure that it is suitable for the
pressure (no sight glass fitted).
▪A2L compatible 2 stage vacuum pump, exhausted to a safe well ventilated area and away
from any source of ignition (check exhaust fumes with flammable gas leak detector).
▪R454C bottle adaptor (left handed female and right handed male connections DIN477-1
21.8mm LH, External, 14 T.P.I).
▪All refrigerant hoses should be as short as possible and have self-closing or ball valve
connections in accordance with BS EN 378.
▪If additional refrigerant is to be added, charge in liquid state and ensure a flammable gas
leak detector is positioned at a low level near the connections. (If the flammable gas leak
detector indicates the presence of a flammable atmosphere, do not energise or de-energise
any electrical components until a safe environment has been ensured.)
oLeak checking the system in accordance with EN 1516/2017 directly after installation.
oIf a leak is discovered, energise the flammable gas leak detector and place at a low level near
connections to the recovery machine and cylinder. Connect an A2L compatible recovery machine
and recover into a suitable recovery cylinder (red painted cylinder valve guard and shoulder) in
accordance with BS EN 378.

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2A SPECIFICATION.
SME
15
20
30
40
45
50
80
90
Nominal cooling
capacity (-10°C
evaporating temp &
32°C ambient
temp)
R454C
kW
1.24
1.53
1.78
2.26
2.96
4.17
5.26
5.95
1 Ph (230V 50Hz) compressor load only (at nominal cooling capacity)
Power (nominal)
kW
0.72
0.83
0.98
1.23
N/A
N/A
N/A
N/A
Starting current
LRA
A
29.5
33
42.2
48
N/A
N/A
N/A
N/A
Nominal current
FLA
A
5.4
5.8
6.4
10.3
N/A
N/A
N/A
N/A
3Ph (400v 50Hz) compressor load only (at nominal cooling capacity)
Power (nominal)
kW
N/A
N/A
N/A
1.23
1.36
1.75
2.18
2.47
Starting current
LRA
A
N/A
N/A
N/A
23
26
32
46
50
Nominal current
FLA
A
N/A
N/A
N/A
3.8
4.2
5.5
6.8
7.8
Sound Pressure Levels (SPL) at 10m distance in free field conditions @ 27°C external ambient.
dBA
34
34
34
34
33
33
34
37
NR
28
28
28
28
27
27
27
30
Condenser fan (1Ph 230V 50Hz)
Airflow (max speed)
m³/s
0.323
0.323
0.713
0.713
0.713
0.713
0.713
0.713
Airflow motor rating
kW
0.065
0.065
0.13
0.13
0.13
0.13
0.13
0.13
Nominal current
FLA
A
0.4
0.4
0.6
0.6
0.6
0.6
0.6
0.6
Fans: No. x
diameter
#x
mm
1x350
1x350
1x457
1x457
1x457
1x457
1x457
1x457
Fans max speed
r.p.m
940
940
940
940
940
940
940
940
2 - SMC CONDENSING UNITS

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2B PERFORMANCE DATA.
MODEL
Evaporating temperature
Ambient
temperature
-20
-15
-10
-5
0
SMC 15
27
0.77
1.01
1.37
1.64
2.09
30
0.73
0.95
1.29
1.54
1.98
32
0.70
0.92
1.24
1.49
1.90
35
0.66
0.86
1.17
1.40
1.79
38
0.62
0.81
1.11
1.32
1.69
40
0.60
0.78
1.06
1.27
1.62
SMC 20
27
0.95
1.25
1.69
2.02
2.59
30
0.90
1.18
1.60
1.91
2.44
32
0.86
1.13
1.54
1.84
2.35
35
0.81
1.07
1.45
1.73
2.22
38
0.77
1.01
1.37
1.63
2.09
40
0.74
0.97
1.31
1.57
2.01
SMC 30
27
1.10
1.44
1.96
2.34
3.00
30
1.04
1.36
1.85
2.21
2.83
32
1.00
1.31
1.78
2.13
2.72
35
0.94
1.24
1.68
2.00
2.57
38
0.89
1.16
1.58
1.89
2.42
40
0.85
1.12
1.52
1.81
2.32
SMC 40
27
1.40
1.84
2.49
2.97
3.81
30
1.32
1.73
2.35
2.81
3.60
32
1.27
1.67
2.26
2.70
3.46
35
1.20
1.57
2.13
2.55
3.26
38
1.13
1.48
2.01
2.40
3.07
40
1.09
1.42
1.93
2.31
2.95
SMC 45
27
2.03
2.55
3.16
3.88
4.72
30
1.95
2.45
3.04
3.74
4.55
32
1.90
2.38
2.96
3.64
4.44
35
1.81
2.28
2.84
3.50
4.26
38
1.72
2.18
2.71
3.35
4.09
40
1.67
2.11
2.63
3.25
3.97
SMC 50
27
2.86
3.60
4.46
5.47
6.66
30
2.75
3.46
4.29
5.28
6.42
32
2.68
3.36
4.18
5.13
6.26
35
2.55
3.22
4.01
4.94
6.01
38
2.43
3.08
3.82
4.73
5.77
40
2.36
2.98
3.71
4.58
5.60
SMC 80
27
3.61
4.53
5.62
6.90
8.39
30
3.47
4.36
5.41
6.65
8.09
32
3.38
4.23
5.26
6.47
7.90
35
3.22
4.05
5.05
6.22
7.58
38
3.06
3.88
4.82
5.96
7.27
40
2.97
3.75
4.68
5.78
7.06
SMC 90
27
4.09
5.13
6.36
7.81
9.50
30
3.92
4.93
6.12
7.53
9.16
32
3.82
4.79
5.96
7.33
8.94
35
3.64
4.59
5.72
7.04
8.57
38
3.46
4.39
5.45
6.74
8.23
40
3.36
4.25
5.29
6.54
7.99

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2C MOUNTING, DIMENSIONS & WEIGHTS.
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.
Condensing unit to be installed outside and not in an enclosed area.
Smoking and naked flames should be prohibited around the area around the condensing unit.
Packed weights
Model
Dimensions
Weight
SMC
Width
Depth
Height
1ph
3ph
15
1060
340
620
48
20
1060
340
620
49
30
1060
340
620
50
40
1060
340
620
55
55
45
1160
390
720
63
50
1160
390
720
66
80
1160
390
720
68
90
1160
390
820
68

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SMC 15-90 (Dimensions in mm.)
Model
Dimensions
Weight
SMC
A
B
C
D
E
F
G
H
1ph
3ph
15
900
300
560
525
185
117
296
274
46
20
900
300
560
525
185
117
296
274
47
30
900
300
560
525
185
117
296
274
48
40
900
300
560
525
185
117
296
274
53
53
45
1000
350
660
495
250
117
346
324
61
50
1000
350
660
495
250
117
346
324
64
80
1000
350
660
495
250
117
346
324
66
90
1000
350
760
495
250
117
346
324
76

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2D GENERAL.
Supplied Sweat connections
Model
SMC
Size
15
20
30
40
45
50
80
90
Expansion
3/8
3/8
3/8
3/8
3/8
1/2
1/2
1/2
Suction
3/8
1/2
1/2
1/2
1/2
1/2
5/8
5/8
The installation section of the risk assessment template or equivalent should be carried out before commencing
installation.
When installing a split refrigeration system, all interconnecting refrigeration pipework must be manufactured, jointed,
tested, insulated and installed in such a way as to ensure that damage cannot occur during normal, service and
maintenance operations that may cause a rupture and subsequent leakage.
It is advisable, wherever possible, that brazed or permanent mechanical joints are used when jointing refrigeration
pipework designed for an A2L refrigerant.
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 expansion lines including mechanical connections
Try to avoid running pipes through hot areas.
Connecting the pipework:
a. 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. Connect the pipework between the units. Do not leave pipes ends, valves etc open to the atmosphere.
d. Use a protective shield to avoid scorching the side panel.

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2D2 SINGLE SPLIT SYSTEMS RUNNING ON EXPANSION LINES WITH EEV AND NO RECEIVER
FITTED IN CONDENSING UNIT.
MAXIMUM PIPE RUNS
80m maximum including 20m lift (50m SMC 15-20). There will be no significant loss of capacity for extended pipe runs
provided pipes are correctly sized.
MAXIMUM LENGTH OF EQUIVALENT
SUCTION LINE PIPE SIZES (m)
Expansion pipe size
SMC
3/8"
1/2"
5/8"
3/4"
7/8"
1-1/8"
1/4"
3/8"
1/2"
5/8"
3/4"
15
7.5
30
50
50
20
7.5
23
50
50
30
15
50
80
50
80
40
10
36
80
7.5
80
45
10
36
80
7.5
80
50
7.5
18
50
80
7.5
50
80
80
11
30
80
50
80
90
10
25
55
80
20
80
100
7.5
22
45
80
15
80
2D3 –MULTI SPLIT SYSTEMS RUNNING ON LIQUID LINES WITH RECEIVER FITTED AND NO
EEV IN CONDENSING UNIT.
MAXIMUM PIPE RUNS
45m maximum including 6m lift. There will be no significant loss of capacity for extended pipe runs provided pipes are
correctly sized.
Main line
SMC
Suction pipe size
Liquid pipe size
3/8"
1/2"
5/8"
3/4"
7/8"
1-1/8"
1/4"
3/8"
1/2"
5/8"
3/4"
45
10
36
45
7.5
45
50
7.5
18
45
7.5
45
80
11
30
45
45
90
10
25
45
20
45
100
7.5
22
45
15
45
150
12
27
45
8
45
180
7.5
16
45
7.5
45
Split Line
SMC
Suction pipe size
Liquid pipe size
3/8"
1/2"
5/8"
3/4"
7/8"
1-1/8"
1/4"
3/8"
1/2"
5/8"
3/4"
45
7.5
23
45
45
50
15
45
45
80
10
36
45
7.5
45
90
10
36
45
7.5
45
100
7.5
18
45
7.5
45
150
11
30
45
45
180
10
25
45
20
45