Marstair 55917026 Technical Manual Download Page 20

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55908039-06

Grille

De-ice stat (option)

Fan / motor

Heater assembly (option)

Case

Drain stub adaptor

Wall / ceiling mounting brackets

Drain tray

Heater bracket

Side access panel

Coil assembly

Electrics box door

Thermostat bulb & bracket

Digital display (option)

Restrictor assembly / extended pipe (option)

CXE INDOOR UNIT COMPONENT IDENTIFICATION

Summary of Contents for 55917026

Page 1: ...55908039 06 CXE SPLIT SYSTEMS TECHNICAL MANUAL ...

Page 2: ... and Electrical practices and have sound knowledge of current Industrial Safe Working practices 2 CXE models are electronic control units that use R407C refrigerant they provide cooling within the range of 2 8 6 8 kW These units are matched with MCU outdoor units to complete a system 3 These units contain live electrical components moving parts and refrigerant under pressure Always site out of rea...

Page 3: ...3 x CXE50 CKC 150 3 x CXE50 CKC 165 3 x CXE70 CKC 100 3 x CXE70 CKC 130 3 x CXE70 CKC 150 3 x CXE70 CKC 165 3 x CXE70 CKC 180 3 x CXE70 CKC 200 If heater is to be fitted to a slave it must also be fitted to the master MODEL Part No 1ph 3ph CKC 50 55020722 55020776 CKC 80 55020723 55020724 CKC 90 55020771 55020778 CKC 100 55020779 CKC 130 55020780 CKC 150 55020781 CKC 165 55020782 CKC 180 55020783 ...

Page 4: ... 12 50 14 00 At 27 C External Ambient MODEL UNPACKED PACKED CKC HEIGHT WIDTH DEPTH WEIGHT 1ph WEIGHT 3ph HEIGHT WIDTH DEPTH WEIGHT 1ph WEIGHT 3ph 50 720 1000 350 64 62 720 1080 340 66 64 80 720 1000 350 66 64 720 1080 340 68 66 90 820 1000 350 76 73 820 1090 390 78 75 100 820 1000 350 81 820 1090 390 83 130 1080 1000 425 101 1080 1090 465 105 150 1080 1000 425 103 1080 1090 465 107 165 1080 1000 4...

Page 5: ...500 1K 2K 4K dB A NC CKC 50 74 68 67 66 61 54 49 44 CKC 80 71 69 68 65 60 54 49 43 CKC 90 82 72 69 69 63 57 52 47 CKC 100 79 74 72 69 64 58 53 47 CKC 130 73 70 70 69 65 57 52 47 CKC 165 73 70 70 69 66 58 57 51 CKC 150 73 70 70 69 66 58 57 51 CKC 180 73 72 72 69 66 58 59 53 Sound Power Levels were obtained in full accordance with the direct method of ISO 3741 1988 Levels are shown in dB with a stan...

Page 6: ...70 0 8 13 0 MODEL 1ph 3ph Power nominal kW Starting current LRA A Nominal current FLA A Power nominal kW Starting current LRA A Nominal current FLA A CKC 50 2 0 58 8 9 1 9 26 4 2 CKC 80 3 0 76 11 5 3 0 40 4 9 CKC 90 4 2 114 16 9 4 1 48 7 1 CKC 100 4 3 51 7 2 CKC 130 4 4 62 7 7 CKC 165 5 3 68 8 7 CKC 150 6 0 71 9 5 CKC 180 7 0 71 11 9 ELECTRICAL DATA ...

Page 7: ...7 55908039 06 CXE DIMENSIONS ...

Page 8: ...Fig 1 Refit the drain tray Fig 1 CXE PIPEWORK NITROGEN CHARGE The unit contains a small charge of dry nitrogen which should be discharged into the atmosphere This is a non toxic non ozone depleting gas with no global warming potential PIPE CONNECTIONS Pipework is terminated with 2 flare nuts bonnets Access is via the rear right hand side Pipes exit the unit through holes in the back panel INDOOR U...

Page 9: ...the MCU outdoor unit and then to the CXE indoor unit For fuse sizing with electric heating contact Marstair technical department WIRING DIAGRAM MASTER Also shows optional heater SLAVE Also shows optional heater 1PH FUSE SIZE Cooling Only Systems CKC 15 20 30 40 50 60 80 90 100 130 150 165 180 200 FUSE 16 16 16 20 16 20 25 32 3PH FUSE SIZE Cooling Only Systems CKC 30 40 50 60 80 90 100 130 150 165 ...

Page 10: ... To change the Setpoint value press and keys within 60 seconds The display will revert to the return air temperature after 60 seconds The fitted de ice thermostat will activate a de ice cycle when there is a build up of ice on the evaporator coil Cellarators will only heat a room if the electric heater option is fitted WARNING The following actions could damage your system 1 Switching the unit OFF...

Page 11: ...ss for installation and maintenance CKC 50 100 Dimensions in mm MODEL A B C D E F G H G1 H1 Weight kg 1 Ph 3 Ph CKC 50 1000 350 660 570 213 60 383 358 345 325 64 62 CKC 80 1000 350 660 570 213 60 383 358 345 325 66 64 CKC 90 1000 350 760 495 250 70 383 358 345 325 76 73 CKC 100 1000 350 760 495 250 70 383 358 345 325 81 1500 min air off 100 min 100 min 600 min CKC INSTALLATION CKC DIMENSIONS ...

Page 12: ...2 55908039 06 CKC 130 180 Dimensions in mm MODEL A B C D E Weight kg CKC 130 1000 1020 495 251 100 101 CKC 150 1000 1020 495 251 100 103 CKC 165 1000 1020 495 251 100 103 CKC 180 1100 1215 675 211 95 118 ...

Page 13: ...uction gas b 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 2 In calculating equivalent lengths of pipe runs the effect of bends and fittings must be taken into account The table below covers the fittings most likely to be encountered in this inst...

Page 14: ...ENT SUCTION LINE PIPE m SUCTION LINE PIPE SIZES EXPANSION LINES PIPE SIZES UNIT SIZE TYPE 1 1 50 Common 7 5 18 50 80 7 5 50 80 Twin 7 5 23 80 80 80 Common 11 30 80 50 80 Twin 15 50 80 50 80 90 Common 10 25 55 80 20 80 Twin 10 36 80 7 5 80 100 Common 7 5 22 45 80 15 80 Twin 7 5 18 50 80 7 5 50 80 Triple 15 50 80 50 80 130 Common 15 30 80 12 60 80 Twin 7 5 18 50 80 7 5 50 80 Triple 10 36 80 7 5 80 1...

Page 15: ...xpansion device as appropriate b Ensure that both the suction and expansion lines are fully insulated c Place the flare nuts over the incoming pipework and flare the pipe ends d Connect the pipework between the units Do not leave pipes ends valves etc open to the atmosphere Always use 2 spanners when tightening the flare nuts to avoid twisting the pipes Use a small amount of refrigerant oil on the...

Page 16: ...becomes obvious on start up the compressor will not develop a normal running pressure differential and the top will not become warm it may be excessively noisy If this happens switch off the mains power and exchange the two supply phases not connected to the indoor unit This will correct the rotation ISOLATOR SWITCHES On a 3 phase system ensure that the neutral contact of the isolator switch is an...

Page 17: ...17 55908039 06 INTERCONNECTING WIRING REFRIGERANT ...

Page 18: ... speed condenser fan should be low temperature system approx 4 4 bar 65 psig 8 Systems should not be overcharged to avoid liquid return to the compressor 9 HEAD PRESSURE CONTROL ALCO FSY 42S The head pressure controller is factory set to suit the refrigerant It may be necessary to adjust this to suit site conditions to raise or lower the nominal head pressure ALCO FSY 42S a With the system switche...

Page 19: ...rant Given the HFC supply shortage that will be created by the phase down process it is worth trying to send the old refrigerant for reclamation as it may have a good residual value If the old refrigerant is too contaminated it cannot be reclaimed and must be sent for destruction It is important not to mix different gases in the same recovery cylinder as this would render them unsuitable for recla...

Page 20: ... Case 11 Drain stub adaptor 4 Wall ceiling mounting brackets 12 Drain tray 5 Heater bracket 13 Side access panel 6 Coil assembly 14 Electrics box door 7 Thermostat bulb bracket 15 Digital display option 8 Restrictor assembly extended pipe option CXE INDOOR UNIT COMPONENT IDENTIFICATION ...

Page 21: ...ION 26 TERMINAL 10 EXPANSION ASSEMBLY 27 FUSE 11 SERVICE VALVE LIQUID 28 FUSE TERMINAL 12 SERVICE VALVE SUCTION 29 TERMINAL 4 WAY 13 VALVE PANEL 30 EARTH TERMINAL 14 BASE 31 HEAD PRESSURE CONTROL pcb 15 MOUNTING FOOT 32 3 MINUTE TIMER pcb 16 LP SWITCH 33 COMPRESSOR CAPACITOR 17 COMPRESSOR 34 ELECTRICS BOX TEV LTD ARMYTAGE ROAD BRIGHOUSE WEST YORKSHIRE HD6 1QF 44 0 1484 405600 44 0 1484 405620 sale...

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