Marstair A2LSYSTEMATCH SMC 15 Technical Manual
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Marstair A2LSYSTEMATCH SMC 15 Technical Manual

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A2LSYSTEMATCH TECHNICAL MANUAL
55008432-02

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Summary of Contents for Marstair A2LSYSTEMATCH SMC 15

  • Page 1 A2LSYSTEMATCH TECHNICAL MANUAL 55008432-02...

  • Page 2: Table Of Contents

    55008432-02 CONTENTS Section Page General Information 1A General Information 1B General Installation procedure SMC Condensing Units 2A Specification 2B Performance Data. 2C Mounting, Dimensions & Weights 2D Pipework Installation. 2E Pressure Testing 2F Evacuating 2G Electrical & Fuses 2F Refrigerant 2G Condensing Unit Wiring Diagrams 2H Electronic Valve Driver Interface 2I Electronic Valve Driver Parameters...

  • Page 3: General Information

    1 – GENERAL INFORMATION 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.

  • Page 4: General Installation Procedure

    55008432-02 1B GENERAL INSTALLATION PROCEDURE Carry out “step by step” or full risk assessment Ensure that no sources of ignition are present during installation Only certified natural persons should be present during the installation Correct selection of tools and equipment compatible with A2L refrigerants. This should include the following: ▪...

  • Page 5: Smc Condensing Units

    55008432-02 2 - SMC CONDENSING UNITS 2A SPECIFICATION. Nominal cooling 1.24 1.53 1.78 2.26 2.96 4.17 5.26 5.95 capacity (-10°C evaporating temp & 32°C ambient temp) R454C 1 Ph (230V 50Hz) compressor load only (at nominal cooling capacity) Power (nominal) 0.72 0.83 0.98...

  • Page 6: Performance Data

    55008432-02 2B PERFORMANCE DATA. Evaporating temperature MODEL Ambient temperature 0.77 1.01 1.37 1.64 2.09 0.73 0.95 1.29 1.54 1.98 0.70 0.92 1.24 1.49 1.90 SMC 15 0.66 0.86 1.17 1.40 1.79 0.62 0.81 1.11 1.32 1.69 0.60 0.78 1.06 1.27 1.62 0.95 1.25...

  • Page 7: Mounting, Dimensions & Weights

    55008432-02 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. 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.
  • Page 8 55008432-02 SMC 15-90 (Dimensions in mm.) Model Dimensions Weight 1000 1000 1000 1000...

  • Page 9: Pipework Installation

    55008432-02 2D PIPEWORK INSTALLATION. Supplied Sweat connections Model Size Expansion Suction 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.

  • Page 10: Pressure Testing

    55008432-02 2E PRESSURE TESTING The pressure testing section of the risk assessment template or equivalent should be carried out before commencing pressure testing. Pressure and leak testing of the system should be completed in accordance with EN 378. Note: The interconnecting pipework and evaporator are all on the low-pressure side of the system. The only high- pressure side of the system is within the condensing unit.

  • Page 11: Refrigerant

    55008432-02 2F REFRIGERANT Charging the system The charging of refrigerant section of the risk assessment template or equivalent should be carried out before commencing refrigerant charging. 1. Evacuate the system and interconnecting pipework ensuring the service valves are fully open. 2.
  • Page 12 55008432-02 SAGINOMIYA (XGE-4C) R454C: 210-220 psig (14.0-15.2barg) 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 ba...

  • Page 13: Condensing Unit Wiring Diagrams

    55008432-02 2G CONDENSING UNIT WIRING DIAGRAMS...

  • Page 14: Electronic Valve Driver Interface

    55008432-02 2H ELECTRONIC VALVE DRIVER INTERFACE Note: The Electronic valve will be factory set to run at 6°C...
  • Page 15 55008432-02...

  • Page 16: Electronic Valve Driver Parameters

    55008432-02 2I ELECTRONIC VALVE DRIVER PARAMETERS CONFIGURATION pLAN: 30 Network address 11 138 others: 198 A Refrigerant: 0 = User 13 140 0= user defined; Defined 1= R22 2= R134a 3= R404A 4= R407C 5= R410A 6= R507A 7= R290 8= R600 9= R600a 10= R717...
  • Page 17 55008432-02 Probe S2: 1 = CAREL 17 144 0= user defined 1= NTC CAREL CAREL NTC- HT high combined NTC SPKP**T0 5= NTC – LT CAREL low temperature 0 to 10V external signal A Auxiliary control: Disabled 18 145 0= user defined 1= Disabled 2= high condensing temperature protection on S3 probe 3= modulating thermostat on S4 probe...
  • Page 18 55008432-02 Valve at fixed C S1 probe alarm manag.: 24 151 1= No action position 2= Valve forced closed 3= Valve at fixed posit. 4= Use backup probe S3 Valve at fixed C S2 probe alarm manag.: 25 152 1= No action position 2= Valve forced closed 3= Valve at fixed posit.
  • Page 19 55008432-02 C Valve position in stand-by 91 218 0 = 25% 1…100% = % opening C start-up delay after defrost 40 167 A Pre-position time 18000 90 217 A Hot gas bypass temperature set point -85(-121) 200 (392) °C (°F) A Hot gas bypass pressure set point -20 (-290) 200 (2900)
  • Page 20 55008432-02 C Low superheat alarm timeout (LowSH) 18000 43 170 (0= alarm DISABLED) C Low evap temp alarm timeout (LOP) 18000 41 168 (0= alarm DISABLED) C High evap temp alarm timeout (MOP) 18000 42 169 (0= alarm DISABLED) C High cond temp alarm timeout (High Tcond) 18000 44 171 (0= alarm DISABLED)

  • Page 21: Eco Design Information Tables

    55008432-02 2J ECO DESIGN INFORMATION TABLES Model(s): SMC 15 S/P Refrigerant fluid(s): R454C Item Symbol Value Unit Evaporating temperature °C -10°C Parameters at full load and ambient temperature 32°C Rated cooling capacity 1.24 Rated power input 0.72 Rated COP 1.73 Parameters at full load and ambient temperature 25°C Cooling capacity 1.41...
  • Page 22 55008432-02 Model(s): SMC 40 S/P Refrigerant fluid(s): R454C Item Symbol Value Unit Evaporating temperature °C -10°C Parameters at full load and ambient temperature 32°C Rated cooling capacity 2.26 Rated power input 1.23 Rated COP 1.84 Parameters at full load and ambient temperature 25°C Cooling capacity 2.50 Power input...
  • Page 23 55008432-02 Model(s): SMC 50 S/P Refrigerant fluid(s): R454C Item Symbol Value Unit Evaporating temperature °C -10°C Parameters at full load and ambient temperature 32°C Rated cooling capacity 4.17 Rated power input 1.75 Rated COP 2.38 Parameters at full load and ambient temperature 25°C Cooling capacity 4.49 Power input...

  • Page 24: Component Identification Smc

    55008432-02 2K COMPONENT IDENTIFICATION SMC+...
  • Page 25 55008432-02...

  • Page 26: Condensing Unit Maintenance

    55008432-02 2L CONDENSING UNIT MAINTENANCE The refrigerant recovery section of the risk assessment template or equivalent should be carried out before commencing refrigerant recovery. Before engaging in any maintenance or repairs ensure Use of trained certified natural persons*. Well ventilated working environment. Use of a flammable gas leak detector.

  • Page 27: Evaporators

    55008432-02 3 – EVAPORATORS 3A MODEL CODE EXPLANATION MB: Marstair (Marstair Box Type) MT: Unit Temp (Medium Temp) 1: No. of fans ( 1, 2 or 3) 25: Fan Diameter (25-30cm) A: Design Spec (A, B, BE, C, E) 3B COMPONENT IDENTIFICATION...

  • Page 28: Unit Dimensions

    55008432-02 3C UNIT DIMENSIONS MB type cold room evaporators are manufactured for use in small and medium commercial areas. They have Ø250mm or Ø300mm diameters fans and 4,2mm fin spacing for medium temperature as standard. Drainage tray has hinged design for easy maintenance. MB types can be manufactured with up to 3 fans. 3D SPECIFICATION Air side Sound...

  • Page 29: Performance Data

    55008432-02 3E PERFORMANCE DATA Evaporating temperature Room Temperature MBMT125A MBMT125B MBMT130B MBMT130E MBMT230B 12.3 12.1 10.1 MBMT230C 14.3 11.1 14.2 11.3 11.9 MBMT230E 15.4 12.1 15.4 12.2 10.5 10.1 MBMT230BE 17.5 13.7 17.7 13.9 14.9 11.36...

  • Page 30: Evaporator Installation

    55008432-02 3F EVAPORATOR INSTALLATION When installing a cold room utilising an A2L refrigerant it is important to ensure that sufficient free space is allowed around the evaporator. The correct amount of space will ensure that, in the unlikely event of a leak occurring, a flammable mixture is not created.
  • Page 31 55008432-02 3F.2 Installation • Ensure that product mounting is level and stable. 3F.3 Piping • Follow SMC instructions condensing unit instructions for interconnecting pipe sizing. 3F.4 Connections • At the factory products are always tested with air for leakages and contain a nitrogen holding charge of 6bar.
  • Page 32 55008432-02 Correct and incorrect connections • Do not hold welding torch directly to the product Correct usage of welding flame...

  • Page 33: Evaporator Operation

    Persons working in and around the cold room must ensure that sources of ignition are not brought into the area. Do not exceed Marstair guidance on cold room fill capacity; it is important to ensure that the cold room is not overloaded with product to ensure adequate air movement.

  • Page 34: Maintenance

    55008432-02 3H MAINTENANCE 3H1 General The refrigerant recovery section of the risk assessment template or equivalent should be carried out before commencing refrigerant recovery. Before engaging in any maintenance or repairs ensure Use of trained certified natural persons*. Well ventilated working environment. Use of a flammable gas leak detector.
  • Page 35 55008432-02 3H2 Changing Defrost Heaters • Electric defrost heaters come in two configurations. One is for light ice formation between 0º C and 5º C temperatures and the other one is for heavy ice formation below 0º C temperatures. • Before anything is done make sure electric power is off •...
  • Page 36 55008432-02 3H3 Changing Fans • Ensure that electric power is off. • Disassemble fan screws. • Remove electrical wirings. • Assemble the fan and be sure of the alignment. • Please repeat instructions. Changing fan motor; • Proceed the upper instruction until dissembling fan. •...

  • Page 37: Trouble Shooting

    55008432-02 3I TROUBLE SHOOTING Problem Reason Solution The product does not -Power is off -Check the power. Check the operate fuses -Connection damage -Check connections Fans are not operate -Power is off -Check the power -Block of rotation -Be sure fan runs smoothly and freely Temperature is too high -Heat exchanger is covered...

  • Page 38: Interconnecting Wiring Diagram

    55008432-02 3K INTERCONNECTING WIRING DIAGRAM...

  • Page 39: Refrigerant System Schematic Diagram

    55008432-02 3L REFRIGERANT SYSTEM SCHEMATIC DIAGRAM 3M SMART CELLAR PARAMETERS Dl (Maximum time between consecutive defrosts) = 8 D6 (Terminal display during defrost) = 0 (Alternating display of temperature and def value) Dc (Time base for defrost) = 0 (dl in hours, dP1 and dP2 in minutes) D10 (Defrost time in running mode) = 5 F2 (Evaporator fans with compressor OFF) = 0 (see parameter f0) The AUX output configuration is set to a normally de-energised alarm by default.

  • Page 40: System Selection Process

    Use 2 smaller systems instead of 1 big system. 7. Contact Marstair for a Dsear free volume assessment. This is the volume within the cold which needs to be kept clear to ensure a flammable atmosphere will not be formed.

  • Page 41: Spares

    PRE-DEFINED SYSTEMS 5 – SPARES Products for spare parts, please ensure the use of official Marstair spares. Any spare parts taken from other companies, Marstair will not be responsible in case of any damage and will be out of warranty.

  • Page 42: Installation Risk Assessment

    55008432-02 7 – INSTALLATION RISK ASSESSMENT Installation of an A2L Split Cold Room System Prior to installation, it is important to ensure that the location is suitable for this type of system and that the instructions have been followed with regard to the minimum room volume for the maximum charge weight. This assessment process is designed to augment a detailed risk assessment not replace it.
  • Page 43 55008432-02 19. Duration of fire watch PRESSURE TESTING 20. F Gas certificate number 21. Is the system to be pressure tested with Oxygen If yes go to question 22 Free Nitrogen? If no rectify and reassess 22. What is the required strength pressure test? 23.
  • Page 44 If no rectify and reassess paperwork? 57. Identify source of leakage and recommence assessment procedure. This information is to be given to the end user along with the Marstair internal free volume assessment, and any other risks identified.

This manual is also suitable for:

A2lsystematch smc 20A2lsystematch smc 30A2lsystematch smc 40A2lsystematch smc 45A2lsystematch smc 50A2lsystematch smc 80 ... Show all

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