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Marstair A2LCELLARMATCH Technical Manual

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A2LCELLARMATCH TECHNICAL MANUAL
55908059-01

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Summary of Contents for Marstair A2LCELLARMATCH

  • Page 1 A2LCELLARMATCH TECHNICAL MANUAL 55908059-01...

  • Page 2: Table Of Contents

    55908059-01 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 2H 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

    55908059-01 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

    55908059-01 2 - SMC CONDENSING UNITS 2A SPECIFICATION. Nominal cooling capacity (-10°C evaporating temp & 32°C 1.53 1.78 2.96 4.17 5.26 ambient temp) R454C 1 Ph (230V 50Hz) compressor load only (at nominal cooling capacity) Power (nominal) 0.83 0.98 Starting current LRA 42.2 Nominal current FLA 3Ph (400v 50Hz) compressor load only (at nominal cooling capacity)

  • Page 6: Performance Data

    55908059-01 2B PERFORMANCE DATA. Evaporating temperature MODEL Ambient temperature 0.95 1.25 1.69 2.02 2.59 0.90 1.18 1.60 1.91 2.44 0.86 1.13 1.54 1.84 2.35 SMC 20 0.81 1.07 1.45 1.73 2.22 0.77 1.01 1.37 1.63 2.09 0.74 0.97 1.31 1.57 2.01 1.10 1.44...
  • Page 7 55908059-01 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 Width Depth Height 1060 1060 1160 1160 1160 SMC 20-80 (Dimensions in mm.) Model Dimensions...

  • Page 8: Pipework Installation

    55908059-01 2D PIPEWORK INSTALLATION. Supplied Sweat connections Model SMC 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 9: Pressure Testing

    55908059-01 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 10: Refrigerant

    55908059-01 2H 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 11 55908059-01 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 12: Condensing Unit Wiring Diagrams

    55908059-01 2G CONDENSING UNIT WIRING DIAGRAMS...

  • Page 13: Electronic Valve Driver Interface

    55908059-01 2H ELECTRONIC VALVE DRIVER INTERFACE Note: The Electronic valve will be factory set to run at 6°C...
  • Page 14 55908059-01...

  • Page 15: Electronic Valve Driver Parameters

    55908059-01 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 16 55908059-01 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 17 55908059-01 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 18 55908059-01 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 19 55908059-01 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 20: Eco Design Information Tables

    55908059-01 2J ECO DESIGN INFORMATION TABLES Model(s): SMC 20 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 1.53 Rated power input 0.83 Rated COP 1.84 Parameters at full load and ambient temperature 25°C Cooling capacity 1.75...
  • Page 21 55908059-01 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 22: Component Identification Smc

    55908059-01 2K COMPONENT IDENTIFICATION SMC+...

  • Page 23: Condensing Unit Maintenance

    55908059-01 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 24: Evaporators

    55908059-01 3 – EVAPORATORS 3A COMPONENT IDENTIFICATION Grille De-ice stat (option) Fan / motor Drain stub adaptor Case Drain tray Wall / ceiling mounting brackets Side access panel Coil assembly Electrics box door Thermostat bulb & bracket...

  • Page 25: Unit Dimensions

    55908059-01 3B UNIT DIMENSIONS 888 (Fixing centres) 17.5 TOP VIEW (Ceiling Mounted) 17.5 MIN. MIN. SIDE VIEW FRONT VIEW SIDE VIEW (Wall mounted) (Wall mounted) (Ceiling mounted) X = Interconnecting Wiring = Suction MIN. 500 = Liquid / Expansion FOR SIDE ACCESS 65 TYP.

  • Page 26: Specification

    55908059-01 3C SPECIFICATION AIR FLOWS m³/s MODEL CXE 30 0.61 CXE 40 0.61 CXE 50 0.66 CXE 70 0.58 SOUND POWER AND SOUND PRESSURE LEVELS INDOOR UNIT MAXIMUM SOUND POWER LEVELS SOUND PRESSURE LEVELS SPEED Frequency Hz dB(A) CXE 30 69.1 67.7 67.6...

  • Page 27: Evaporator Installation

    55908059-01 3D EVAPORATOR INSTALLATION When installing a cellar cooling system 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 28: Evaporator Operation

    55908059-01 3E EVAPORATOR OPERATION Persons working in and around the cellar cooler must ensure that sources of ignition are not brought into the area.Loading and unloading of product should be carried in a way to ensure that damage to the refrigeration containing components cannot occur.

  • Page 29: Maintenance

    55908059-01 NB: Allow at least 3 minutes between the above actions. 3F 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 o Use of trained certified natural persons*.

  • Page 30: Alarm Installation

    55908059-01 3G ALARM INSTALLATION A method of alarm is required identify a potential loss of gas. This can be a cellar temperature "out of limits" alarm, or something more specific like a gas leak detector. In the case of a leak the alarm should as a minimum either: - •...

  • Page 31: Evaporator Wiring Diagram

    55908059-01 3H EVAPORATOR WIRING DIAGRAM 3I REFRIGERANT SYSTEM SCHEMATIC DIAGRAM...

  • Page 32: System Selection Process

    Use 2 smaller systems instead of 1 big system. 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 33: Installation Risk Assessment

    55908059-01 7 – INSTALLATION RISK ASSESSMENT Installation of an A2L Split Cellar 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 34 55908059-01 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. What is the required tightness pressure test? 24.
  • Page 35 55908059-01 47. Have the charging hoses been removed safely If yes go to question 48 and with minimum loss of refrigerant? If no rectify and reassess 48. Is the service valve leak free and cap replaced? If yes go to question 49 If no go to question 50 REFRIGERANT RECOVERY 49.

This manual is also suitable for:

Smc 20Smc 30Smc 45Smc 50Smc 80

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