Danfoss OP-HNXM User Manual Download

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Installation and maintenance

condensing unit manual

OP-HJZM / HNXM / HRXM / LNYM / LRYM / LJHM

Manual

http://cc.danfoss.com

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Summary of Contents for OP-HNXM

Page 1: ...Installation and maintenance condensing unit manual OP HJZM HNXM HRXM LNYM LRYM LJHM Manual http cc danfoss com ...

Page 2: ...ce of the condensing unit must be carried out by qualified personnel only Follow these instructions and best practices on refrigeration engineering during installation commissioning maintenance and servicing tasks 2 The condensing unit must only be used for its designed purposes and within its scope of application 3 Under all circumstances requirements must be fulfilled 4 The condensing unit is de...

Page 3: ...ft or pallet jack for handling Use appropriate and safe lifting equipment Store and transport the unit in an upright position Store the unit between 30 F and 120 F Don t expose the packaging to rain or corrosive atmosphere After unpacking check that the unit is complete and undamaged Introduction Handling and storage Installation Maintenance Unit must be carried out by qualified personnel only Han...

Page 4: ...terial Use clean and dehydrated system components The suction piping connected to the compressor must be flexible in 3 dimensions to dampen vibrations Furthermore piping has to be done in such a way that oil return for the compressor is ensured and the risk of liquid slug over in compressor is eliminated The unit must be securely installed on a stable and rigid support and fix from the beginning I...

Page 5: ...s applied to this product it causes transformation of characteristics or the destruction Operation will become unstable when using other than sine waves for the power supply In this case proper control may not be achieved To ensure stable operation sine wave AC power supply must also be stable F V S Full Voltage Set point The pressure at which the control delivers 95 output effective voltage R M S...

Page 6: ...n Such as snow or freezing Check if a line to line short circuit is detected at a connection point of the fan motor It is recommended to protect the circuit with a thermal relay or circuit protector Note Make sure to remove the cause of burn out before conducting a test run Otherwise burn out may occur again Surge voltage was applied Check if a lightning surge or similar occurred or not PCB burn o...

Page 7: ...aintenance Switch off the system and isolate the main power supply Ensure that power supply cannot be switched on during installation All electrical components must be selected as per local standards and unit requirements Refer to wiring diagram for electrical connections details Ensure that the power supply corresponds to the unit characteristics and that the power supply is stable nominal voltag...

Page 8: ...erify that all electrical connections are properly fastened and in compliance with local regulations When a crankcase heater is required it must be energized at least 12 hours before initial start up and start up after prolonged shut down or belt type crankcase heaters Never start the unit when no refrigerant is charged All service valves must be in the open position Check compliance between unit ...

Page 9: ...ections are still adequately fastened Keep the unit clean and verify the absence of rust and oxidation on the unit components tubes and electrical connections The condenser must be checked at least once a year for clogging and be cleaned if deemed necessary Access to the internal side of the condenser takes place through the fan panel Microchannel coils tend to accumulate dirt on the surface rathe...

Page 10: ...2 47 4 16 5 7 8 1 2 HRXM0500 2 28 8 49 4 31 5 7 8 1 2 HRXM0600 2 28 8 49 4 31 5 7 8 1 2 HRXM0700 2 28 8 49 4 31 5 7 8 1 2 HRXM0750 2 39 1 61 2 31 5 1 1 8 5 8 HRXM1000 2 39 1 61 2 31 5 1 1 8 5 8 Unit Dimensions in Fig Height H in Width W in Length D in Suction line Liquid line LJHM0150 1 19 5 43 5 13 4 5 8 3 8 LJHM0200 1 19 5 43 5 13 4 5 8 3 8 LNYM0400 1 28 2 47 4 16 5 7 8 1 2 LNYM0500 1 28 2 47 4 ...

Page 11: ...1 1 8 X 7 8 W D H 2X Knockout 7 8 Liquid Line C L C L Suction Line 2X Double Knockout 1 1 8 X 7 8 W H D 2X Knockout 7 8 C L Suction Line Liquid Line C L 2X Double Knockout 1 1 8 X 7 8 W D H 2X Knockout 7 8 Liquid Line C L C L Suction Line 2X Double Knockout 1 1 8 X 7 8 W H D Figure 1 Figure 2 Dimensions ...

Page 12: ...2 BC251686497767en US0801 Electrical wiring diagrams Wiring Diagram 119 8312 Wiring Diagram 119 8313 Electrical Code N HJZM0150 HNXM0200 0400 HRXM0500 LJHM0150 0200 Electrical Code Q HNXM0200 0400 HRXM0500 1000 ...

Page 13: ...251686497767en US0801 Electrical wiring diagrams X 4 2 1 N 3 N O LOAD N C LOAD Wiring Diagram 119 8315 Wiring Diagram 119 8493 Electrical Code Q HJZM0150 LJHM0150 0200 Electrical Code Q LNYM0400 0500 LRYM0600 0800 ...

Page 14: ...Manual 14 BC251686497767en US0801 Electrical wiring diagrams Wiring Diagram 119 8640 Wiring Diagram 119 8641 Electrical Code R HRZM0600 1000 Electrical Code R LRYM0600 0800 ...

Page 15: ...top the refrigerant flow through the evaporator 10 Suction pressure decreases and the compressor contactor opens when the pressure drops below the cut out setting on the low pressure control The compressor and condenser fan stop running 11 This cycle is repeated as many times as necessary to satisfy the room thermostat 12 Frost may form on the evaporator coil until the defrost cycle is initiated D...

Page 16: ...mensions Length Height in mm in mm HJXM0150 0200 LJHM0150 0300 26 660 19 480 HJXM0200 0300 29 740 22 550 LNYM0400 0500 HJXM0350 0400 31 780 27 700 HRXM0500 0700 LRYM0600 0800 46 1170 28 720 HRXM0750 1000 58 1470 38 970 2 Remove the screws from the sides and top of the condenser 3 Lock the hailguard into place by reattaching the screws Start on the left side unrolling the hailguard before attaching...

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Page 18: ...verter Scrolls Danfoss Turbocor Compressors Danfoss Scrolls Danfoss Optyma Condensing Units Danfoss Maneurop Reciprocating Compressors BC251686497767en US0801 Danfoss DCS CC 2019 11 Our products can be found in a variety of applications such as rooftops chillers residential air conditioners heatpumps coldrooms supermarkets milk tank cooling and industrial cooling processes Disclosure This equipmen...

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