Marstair A2LCELLARMATCH User manual

55908059-01
A2LCELLARMATCH TECHNICAL MANUAL

55908059-01
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
6
2D Pipework Installation.
8
2E Pressure Testing
9
2F Evacuating
9
2G Electrical & Fuses
9
2H Refrigerant
10
2G Condensing Unit Wiring Diagrams
12
2H Electronic Valve Driver Interface
13
2I Electronic Valve Driver Parameters
15
2J Eco Design Information Tables
20
2K Component Identification SMC+
22
2L Condensing Unit Maintenance
23
3
Evaporators
3A Component Identification
24
3B Unit Dimensions
25
3C Specification
26
3D Evaporator Installation
27
3E Evaporator Operation
28
3F Maintenance
29
3G Alarm Installation
30
3H Evaporator Wiring Diagram
31
3I Refrigerant System Schematic Diagram
31
4
System selection process
32
5
Spares
32
6
End of life requirements
32
7
Installation risk assessment
33
CONTENTS

55908059-01
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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
20
30
45
50
80
Nominal cooling capacity (-10°C evaporating temp & 32°C
ambient temp) R454C
kW
1.53
1.78
2.96
4.17
5.26
1 Ph (230V 50Hz) compressor load only (at nominal cooling capacity)
Power (nominal)
kW
0.83
0.98
N/A
N/A
N/A
Starting current LRA
A
33
42.2
N/A
N/A
N/A
Nominal current FLA
A
5.8
6.4
N/A
N/A
N/A
3Ph (400v 50Hz) compressor load only (at nominal cooling capacity)
Power (nominal)
kW
N/A
N/A
1.36
1.75
2.18
Starting current LRA
A
N/A
N/A
26
32
46
Nominal current FLA
A
N/A
N/A
4.2
5.5
6.8
Sound Pressure Levels (SPL) at 10m distance in free field conditions @ 27°C external ambient.
dBA
34
34
33
33
34
NR
28
28
27
27
27
Condenser fan (1Ph 230V 50Hz)
Airflow (max speed)
m³/s
0.323
0.713
0.713
0.713
0.713
Airflow motor rating
kW
0.065
0.13
0.13
0.13
0.13
Nominal current FLA
A
0.4
0.6
0.6
0.6
0.6
Fans: No. x diameter
#x
1x350
1x457
1x457
1x457
1x457
mm
Fans max speed
r.p.m
940
940
940
940
940
2 - SMC CONDENSING UNITS