TECHNICAL MANUAL. for 529 SERIES CELLARATOR SPLIT SYSTEMS

Transcription

1 TECHNICAL MANUAL for 529 SERIES CELLARATOR SPLIT SYSTEMS This manual provides technical and installation information for CELLARATOR split systems comprising INDOOR UNIT MATCHED WITH 529 series LC indoor units 550 series MCU or MCU+ condensing units 542 series DCUE ducted condensing units. INDEX PAGE GENERAL Part numbers, dimensions and weights 2-3 SELECTION Unit combinations, performance data 3 Optional electric heating, airflows and air throws 4 Sound power and sound pressure levels 4-5 ELECTRICAL Electrical data, recommended fuse sizes 5-6 UNIT LC 7 INSTALLATION MCU(+) and DCUE units 8-10 Pipework Electrical connections Evacuating and charging WIRING LC units 13 DIAGRAMS MCU(+) and DCUE Interconnection OPERATION LC 20 LC KITS Electric heaters 21 COMPONENT Exploded views with component identification IDENTIFICATION IMI Air Conditioning Ltd. Armytage Road, Brighouse, West Yorkshire. HD6 1QF Tel: (01484) Fax: (01484) A subsidiary company of IMI plc

2 CELLARATOR SPLIT SYSTEMS The CELLARATOR range of split systems comprises 529 series LC indoor units, 550 series condensing units and 542 series electronic ducted condensing units. They can provide air conditioning with a cooling range of kw and an SHR of around UNIT COMBINATIONS Heronhill - for all your IMI requirements LC LC 100 LC 170 LC 230 MCU(+) or DCUE Series LC INDOOR UNITS Model LC 100 LC 170 LC 230 Part Number Series CONDENSING UNITS (MCU / MCU+, defining compressor type) R22 1 Ø 3 Ø MCU 20 MCU+ 20 MCU 50 MCU+ 50 MCU 80 MCU+ 80 MCU 50 MCU+ 50 MCU 80 MCU+ 80 Rotary Recip Scroll R407C 1 Ø 3 Ø MCU 20 MCU+ 20 MCU 50 MCU+ 50 MCU 80 MCU+ 80 MCU 50 MCU+ 50 MCU 80 MCU+ 80 Rotary Recip Scroll Series DUCTED CONDENSING UNITS (reciprocating compressors only) 1 Ø 3 Ø DCUE 20 DCUE 50 DCUE 80 DCUE 20 DCUE 50 DCUE 80 R R407C UNPACKED DIMENSIONS AND WEIGHTS LC INDOOR UNITS Model LC 100 LC 170 LC 230 HEIGHT mm WIDTH mm DEPTH mm WEIGHT kg CONDENSING UNITS MCU(+) Model MCU(+) 20 MCU(+) 50 MCU(+) 80 HEIGHT mm WIDTH mm DEPTH mm WEIGHT 1 Ph 40 (46*) kg 3 Ph ( * ) = models fitted with reciprocating compressor -2-

3 DUCTED CONDENSING UNITS Model DCUE 20 DCUE 50 DCUE 80 HEIGHT mm WIDTH mm DEPTH mm WEIGHT kg PACKED DIMENSIONS AND WEIGHTS LC INDOOR UNITS Model LC HEIGHT mm WIDTH mm DEPTH mm WEIGHT kg CONDENSING UNITS Model MCU(+) 20 MCU(+) 50 MCU(+) 80 HEIGHT mm WIDTH mm DEPTH mm WEIGHT 1 Ph 42 (48*) kg 3 Ph ( *) = R407C / R22 models fitted with reciprocating compressor DUCTED CONDENSING UNITS Model DCUE 20 DCUE 50 DCUE 80 HEIGHT mm WIDTH mm DEPTH mm WEIGHT kg AIR CONDITIONER PERFORMANCE DATA (All duties in kw) Cellar Cooling (MCU(+)/DCUE) RATING CONDITIONS ROOM 12.7 C/10 C MODEL AMBIENT 27 C/19 C COMBINATION MAXIMUM SPEED EVAPORATOR LC + MCU(+) or TOTAL SHR SENSIBLE

4 Optional Electric Heating Heronhill - for all your IMI requirements at 240V at 230V LC (kw) (kw) AIRFLOWS LC UNITS Maximum Speed LC CFM m 3 /h m 3 /s LC AIR THROWS Typical unrestricted airthrows are shown below. Actual throw will depend on the installation. AIRFLOWS OUTDOOR/DUCTED UNITS MIN Speed MAX Speed Min. Speed Max. Speed Model CFM m 3 /s CFM m 3 /s Model CFM m 3 /s CFM m 3 /s MCU(+) DCUE MCU(+) DCUE MCU(+) DCUE SOUND POWER and SOUND PRESSURE LEVELS 529 SERIES LC SOUND POWER LEVELS SOUND PRESSURE Frequency Hz LEVELS MODEL SPEED K 2K 4K dba dba NC 100 Max Max Max Sound Power Levels were obtained in full conformity with BS 4196: Part 5: Levels are shown in db with a standard reference of 1 pw. Sound Pressure Levels are db relative to 2 x 10-5 N/m 2 and are calculated from the results under anechoic conditions and are quoted as an average of all points on a hemisphere of a radius of 3m away from the centre of the unit. -4-

5 SOUND POWER and SOUND PRESSURE LEVELS 550 SERIES MCU and MCU+ MAXIMUM SPEED SOUND POWER LEVELS SOUND PRESSURE Frequency Hz LEVELS MCU(+) Compressor K 2K 4K dba dba NC 20 Rotary Recip Scroll Scroll MINIMUM SPEED SOUND POWER LEVELS SOUND PRESSURE Frequency Hz LEVELS MCU(+) Compressor K 2K 4K dba dba NC 20 Rotary Recip Scroll Scroll Sound Power Levels were obtained in full accordance with the direct method of ISO 3741: Levels are shown in db with a standard reference of 1 pw. Sound Pressure Levels are db relative to 2 x 10-5 N/m 2 and are calculated from the results under anechoic conditions and are quoted as an average of all points on a sphere of a radius of 3m away from the centre of the unit (in cooling mode); (add 3dBA or 3NC for units at an intersection of a wall, add 1dBA or 1NC for high level wall mounted units). SOUND PRESSURE LEVELS -- DUCTED CONDENSING UNITS Measurement Point 3m from unit in void Unit Size DCUE 20 Heronhill - for all your IMI requirements Fan Speed dba NC Max Min DCUE 50, 80 Max Min Max DCUE 20 Office Min area DCUE 50, 80 Max Min Max DCUE 20 3m from Min discharge grille DCUE 50, 80 Max Min All readings taken from a typical application of a unit suspended in a ceiling void complete with 5m of insulated ducting, conditioning an office directly below. Sound Pressure Levels are db relative to 2x10-5 N/m 2. ELECTRICAL DATA a LC and MCU(+) charged with R22 Single Phase Supply 230Volts - 50Hz Three Phase Supply 400Volts - 50Hz INPUT FULL LOAD AMPS SYSTEM SYSTEM INPUT FULL LOAD AMPS MAX. MAX. LC + MCU(+) STARTING STARTING Cooling Heating Cooling Heating Cooling Heating Cooling Heating CURRENT CURRENT kw kw AMPS AMPS AMPS kw kw A/PH A/PH* A/PH b LC and DCUE charged with R22 Single Phase Supply 230Volts - 50Hz Three Phase Supply 400Volts - 50Hz INPUT FULL LOAD AMPS SYSTEM SYSTEM INPUT FULL LOAD AMPS MAX. MAX. LC + DCUE STARTING STARTING Cooling Heating Cooling Heating Cooling Heating Cooling Heating CURRENT CURRENT kw kw AMPS AMPS AMPS kw kw A/PH A/PH* A/PH

6 c LC and MCU(+) charged with R407C Heronhill - for all your IMI requirements LC + MCU(+) Single Phase Supply 230Volts - 50Hz Three Phase Supply 400Volts - 50Hz SYSTEM SYSTEM INPUT FULL LOAD AMPS INPUT FULL LOAD AMPS MAX. MAX. STARTING STARTING Cooling Heating Cooling Heating Cooling Heating Cooling Heating CURRENT CURRENT kw kw AMPS AMPS AMPS kw kw A/PH A/PH* A/PH d LC and DCUE charged with R407C Single Phase Supply 230Volts - 50Hz Three Phase Supply 400Volts - 50Hz INPUT FULL LOAD AMPS SYSTEM SYSTEM INPUT FULL LOAD AMPS MAX. MAX. LC + DCUE STARTING STARTING Cooling Heating Cooling Heating Cooling Heating Cooling Heating CURRENT CURRENT kw kw AMPS AMPS AMPS kw kw A/PH A/PH* A/PH Outdoor/Ducted Unit Electrical Loads (At 230 Volts 50 Hz 1Ph, in Amps, or 400 Volts 50 Hz 3PhN, in Amps/Phase) MCU(+) FAN MOTOR R22 COMPRESSOR (1 PHASE) NOMINAL FLA R22 COMPRESSOR (3 PHASE) NOMINAL FLA R407C COMPRESSOR (1 PHASE) NOMINAL FLA R407C COMPRESSOR (3 PHASE) NOMINAL FLA DCUE FAN MOTOR CRANKCASE HEATER COMPRESSOR (1 PHASE) NOMINAL FLA COMPRESSOR (3 PHASE) NOMINAL FLA N/A RECOMMENDED FUSE SIZES The system and its supply/interconnecting wiring must be protected by fuses, preferably High Rupture Current (HRC) motor rated types (to EN60269) or miniature circuit breakers to (EN60898) or local codes having similar time lag characteristics, that allow starting of the compressor yet still afford close overcurrent protection under running conditions. The ratings below are for HRC motor rated fuses. FUSES FOR SYSTEMS WITH ONE PHASE (230 volt) OUTDOOR UNITS SYSTEM LC 100 COOL ONLY LC 100 COOL AND HEAT LC 170 COOL AND HEAT LC 230 COOL AND HEAT FUSE 15A 20A 20A 32A Use High Rupture Current (HRC) motor rated types (to EN60269) or miniature circuit breakers (to EN60898), or local codes having similar time lag characteristics, that allow the compressor to start but still afford close overcurrent protection under running conditions FUSES FOR SYSTEMS WITH THREE PHASE (400 volt) OUTDOOR UNITS SYSTEM LC 170 COOL AND HEAT LC 230 COOL AND HEAT FUSE 16A/PH 20A/PH See note in table above on fuse type -6-

7 LC UNIT INSTALLATION Heronhill - for all your IMI requirements The LC CELLAR COOLER may be mounted directly onto a solid ceiling or on a wall. The installer supplies: Mounting * Fully insulated refrigeration pipework. * All mains wiring with suitable isolation; Interconnecting wires for indoor and outdoor units. * Condensate drain (3/4" bore diameter tube). * A 5mm Allen key for opening the outdoor/ducted unit valves. * Method for securing solid sheathed cables if these are used. 1 If an electric heater kit is to be used, it is easier to fit this prior to mounting the unit and connecting the pipework. 2 The end panels of the unit are flanged to form mounting brackets. Holes are provided in the flanges for securing the unit to a wall or ceiling. 3 Ensure that the mounting surface will support the operating weight of the unit (see table below). 4 Mark out the mounting positions (keyholes, and plain holes for security), and drill holes to suit 6mm Rawlbolt shields or equivalent strength fasteners (ensure that the unit is positioned to give sufficient access to the electrics box on the left hand side and the pipe connections on the right hand side). 5 Raise the unit into position and secure the fixings, ensuring that it is square and level. 6 Once fully installed, remove the protective coating from the stainless steel case. Dimensions X - ELECTRIC CABLE ENTRY POSITION Y - CONDENSATE OUTLET Z - REFRIGERANT CONNECTION Model Weight kg Expansion ins. OD Suction ins OD Condensate drain (Ømm) LC /8 1/2 19 LC /8 5/8 19 LC /2 5/8 19 Model A mm B mm C mm D mm LC LC LC E mm F mm G mm H mm J mm -7-

8 INSTALLATION of 550 Series CONDENSING UNITS MCU = standard condensing unit MCU+ = standard condensing unit + FSC + LP switch The installer will require: 2 open ended spanners for securing the flare fittings A 4 or 5mm Allen Key for the valves (dependant on valve type). Note: It is easier to fit kits prior to mounting the unit. These units are designed to stand on a flat surface. If the unit is to be wall mounted the following kit is available. (IMI Air Conditioning cannot accept liability for installers own mounting arrangements). Model MCU(+) Mounting Bracket Kit 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. MOUNTING: MCU(+) All dimensions are in millimetres. MODEL A B C D E F G H Weight (kg) 1 Ph 3 Ph MCU(+) (46*) -- MCU(+) MCU(+) ( *) = R407C / R22 models with reciprocating compressor DUCTED CONDENSING UNITS Electronic fan speed control, start delay timer, HP and LP switches, stabilizing brackets and a contactor are fitted as standard. It is generally easier to fit the following kits (if applicable) prior to mounting the unit :- i) PTC (Positive temperature coefficient resistor) } for use on single phase systems, ii) CSR (Capacitor start relay). } particularly on long pipe runs. iii) Isolator. iv) Overload (single phase units only: standard on three phase units). v) Wall mounting kit. Consideration should be given to the following, prior to mounting, but should not be fitted until the unit is in position:- i) Intake/discharge plenum. ii) Flexible ductwork. iii) Intake/discharge grille. -8-

9 Mounting Heronhill - for all your IMI requirements Units are supplied with a polystyrene packing piece supporting the blower assembly, this MUST be removed prior to commissioning. Ducted Units are designed to be hung on a wall (kit available), suspended from a ceiling (installer supplied fittings), or to stand on a flat surface. Whichever method is used, it is essential that the mounting surface is capable of supporting the unit's weight. Dimensions Dimensions in mm. Model A B C D E F G H J K Spigot Ø Weight (kg) DCUE DCUE DCUE Floor Mounting Using the appropriate side of the packing carton as a template, (centres marked A,B), mark out and drill 4 holes to suit M8 bolts (also see overleaf). Secure the unit to the floor. Discard the stabilizing brackets. Suspension Mounting The installer must supply 4 x M8 threaded rods with 16 nuts and washers to suit. IMPORTANT: The stabilizing brackets provided MUST be used when suspending a unit. Fit the stabilizing brackets to the top corners of the backpanel and front face using the No. 10 screws provided, (2 per bracket). If these brackets are omitted the unit will be subject to unacceptable movement on compressor start. Where long drops of M8 rod are used, it is advisable to incorporate flexible pipes in the suction and expansion lines to absorb any movement of the unit. Using the template printed on the side of the packing carton, (centres marked A), mark out the ceiling and drill 4 holes to suit M8 screwed rod. Raise the unit to the required height and pass the screwed rods through the mounting holes in the units feet and stabilizing brackets. Secure the unit with a nut and washer on either side of each stabilizing bracket and two nuts and washers underneath each foot mounting hole, (as shown, right). -9-

10 Wall Mounting Specially designed brackets to enable ducted units to be wall mounted are available as an optional kit ( ). Ductwork Each unit is supplied with air inlet and discharge spigots, model mm (14") dia., models 50 and mm (16") dia. These may be used for connecting installers ducting or used with the optional Duct, Plenum and Grille kits. Please refer to the kit instruction for installation methods. The front face of the units also fitted with M6 rivnuts to accept installer supplied square ducting, see dimensions below. Maximum flange width is 25mm and fixing holes should be central within them. NOTE: It is essential that ducting is adequately insulated to prevent sweating. An insulation thickness of at least 45mm is recommended. Dimensions in Model mm /80 A B C PIPEWORK A: USING SUCTION AND EXPANSION LINES With the expansion device connected to the outdoor/ducted unit (as supplied) allowing pipe runs up to 80m. MAXIMUM LENGTH OF EQUIVALENT SUCTION LINE PIPE SIZES (IN METRES) EXPANSION LINES FACTORY CHARGE OF REFRIGERANT R22 (R407C) FOR 7.5 METRE RUNS AT U.K. CONDITIONS (gms) ADDITIONAL R22 (R407C) REQUIRED FOR 7.5 METRE RUNS AT NEMA CONDITIONS (gms) UNIT 3/8 1/2 5/8 3/4 7/8 1-1/8 1-3/8 3/8 1/2 5/8 MCU(+) (1030) 60 (65) MCU(+) (1690) 350 (370) MCU(+) (1880) 410 (430) B: USING SUCTION AND LIQUID LINES With the expansion device removed from the outdoor/ducted unit and connected to the indoor unit (maximum 22.5m pipe run). Remove the expansion device from the outdoor/ducted unit. Remove the cellar cooler right hand panel cover plate. Break the flare joint in the liquid line and fit the expansion device between the two pipes: this will allow for a liquid line rather than an expansion line, but will restrict the maximum length of run to 22.5m, including a maximum of 7.5m lift. The following pipe sizes are selected to maintain refrigerant velocities, giving adequate oil return to the compressor and maximum compressor capacity. MAXIMUM LENGTH OF EQUIVALENT SUCTION LINE PIPE SIZES (IN METRES) UPFLOW LIQUID LINES UNIT 3/8 1/2 5/8 3/4 3/8 1/2 1/4 3/8 MCU(+)/DCUE MCU(+)/DCUE MCU(+)/DCUE

11 PIPEWORK Heronhill - for all your IMI requirements 1 Liquid lines should be routed to avoid hot areas. This is to prevent flash gas forming which may result in erratic control of the liquid refrigerant to the evaporator. 2 Suction lines should slope downwards towards the compressor by at least 4mm per metre. 3 Suction lines must always be adequately insulated over their entire length, including inside the cellar cooler. Insulate expansion lines when applicable. 4 In calculating equivalent lengths of pipe runs, the effect of bends and fittings must be taken into account. Information concerning the equivalent lengths of line fittings and bends etc. is generally available to the design engineer. The table below covers the fittings most likely to be encountered in this type of installation. The equivalent lengths of all the fittings in a particular pipe run must be added together and the total added to the actual length of pipe in the run, in order to calculate its total equivalent length. FITTING LOSSES, in equivalent straight lengths of pipe (metres). Pipe Size (outside diameter in inches) Fitting 3/8 1/2 5/8 3/4 7/8 1-1/8 45 Bend Bend R/d = Bend R/d = Bend C/d = Bend C/d = Elbow R = Radius of bend d = Diameter of tube C = Centres of bend 5 Use the shortest possible route, avoiding sharp bends. PIPE CONNECTIONS LC UNITS Pipework is terminated with brazed caps inside the unit. Access is via the right hand panel cover plate. Pipes can exit the unit through holes in the top and back panel or through the gap at the right hand end of the air on grille. Refer to the outdoor/ducted unit installation instructions for details of pipework connection. If a sight glass is fitted to assist charging, position it in the liquid/expansion line BEFORE the expansion device, downstream of a drier, (if fitted). MCU, MCU(+) AND DCUE UNITS Outdoor units are supplied with the following male flare connections (sizes in inches); MODEL MCU(+)/DCUE SIZE LIQUID 3/8 3/8 1/2 SUCTION 3/8 1/2 5/8 NOTE: Ensure that both service valves on the outdoor/ducted unit are closed (IN, fully clockwise) before commencing installation. 1 Remove and retain the flare nuts from the service valve. ELECTRICAL CONNECTIONS All mains, control and interconnecting cables must be supplied and fitted by the installer. The installer wiring must be carried out in accordance with IEE regulations and local codes. Refer to the interconnecting wiring diagrams on page s 17 to 19. All mains supply cables must be size compatible with the recommended fuse for a given system (see pages 5 and 6). An all pole isolator switch should be positioned within easy reach of the indoor unit. The equipment must be earthed. Cable clamps for use with stranded cables are supplied in all outdoor/ducted units and should be used to secure all incoming/outgoing cables. Installers must supply a method of securing any solid sheathed cables. IMPORTANT NOTE: On 3 Phase unit sizes 50 and 80 it is possible for the scroll compressor to run backwards. This 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 any two of the phases supplying the unit. This will correct the rotation of the compressor. -11-

12 ELECTRICALSUPPLY All systems require a supply to the condensing unit with connecting cables run to the indoor unit. OUTDOOR UNIT WIRING Cable entry for the outdoor unit electrics is through the cabinet to a terminal block. Outdoor unit fan motors have a high speed (black) wire and a low speed (red) wire; the speed not being used is wired into a dummy terminal. Electromechanical condensing units (MCU) are supplied wired for low fan speed, which is suitable for temperate climates. If continuous running is expected at ambient temperatures of 35 C or higher, change to high speed by interchanging the black and red wires, i.e. black to fused terminal, red to terminal 4. MCU+ and DCUE are supplied wired for high speed to give maximum control utilising the head pressure control. Ensure that all connections are secure and that both units are earthed. DATA PLATES Because of the ability to mix-match indoor and outdoor units, the data plate only gives information on outdoor units. To obtain the system details, input power and currents from indoor and outdoor units should be added together. Data plates show basic units with electric heater kit loads shown separately, (see data on page 5). EVACUATING 1 Connect a vacuum pump to the service ports on the outdoor unit valves and evacuate the interconnecting pipework and indoor unit to 1000 microns (1 Torr) or better and allow to be held for a minimum of 15 minutes. 2 If NO additional refrigerant charge is required: Replace the caps on the service ports, (tighten to a torque of 25NM), and open the valves using a 5mm Allen key. On DCUE units, REMOVE link JP6 identified by a white label, (otherwise the unit will always run at full speed). ADDING REFRIGERANT 1 If additional refrigerant charge is required: After evacuating the indoor unit and interconnecting pipework, open the valves using a 5mm Allen key. The high and low side pressures should equalise within a minute. 2 Additional charge should be introduced through the Schrader valve on the indoor unit or the service port on the suction service valve on the outdoor unit. 3 MCU(+) units fitted with head pressure control - the fan should be run at maximum speed during charging: Pressure operated HPC: transfer the white wire from terminal 4 to terminal 1. Temperature operated HPC: transfer the white wire from terminal 2 to terminal 1 DO NOT FORGET to transfer the white wire back once charging is complete. DCUE are supplied with link JP6 fitted on the outdoor unit pcba; this allows additional charging and overrides alarms during the charging process. With both units powered, the DCUE fan will run at high speed. Indoor units should be set to operate in cooling mode at maximum speed. 4 Ensure that any refrigerant or oil added is the same as the system was originally charged with. 5 If a manual HP cutout is fitted, ensure that the reset button is depressed. 6 On DCUE models a random start delay of up to 1 minute occurs when mains is first applied. A 3 minute delay occurs between successive compressor operations on all systems incorporating DCUE units, or MCU(+) units fitted with a 3 minute timer kit. 7 Run the system for a few minutes to allow it to stabilize. Where possible, charge to a sweat line on the evaporator. Typical suction pressures on short lines at UK conditions, with high speed evaporator fan, low speed condenser fan (commissioning speed for DCUE), should be approx. 4.4 bar (65 psig). Care should be taken when the compressor is first started in the field to ensure that the system is not overcharged, in which case liquid return to the compressor could result. 8 On DCUE units, once refrigerant has been added, REMOVE link JP6, identified by a white label (otherwise the unit will always run at full speed). -12-

13 CHARGING PIPE RUNS UP TO 7.5M. Each outdoor/ducted unit is precharged with R22 ( R407C)refrigerant. Refer to the table below to determine the amount of refrigerant to be added/recovered from each system. Additional oil is not required for pipe runs up to 7.5m. Outdoor/Ducted Unit Supplied Charge R22 (R407C) Required Charge R22 (R407C) (1030) 875 (925) (1690) 1710 (1790) (1880) 1700 (1780) PIPE RUNS OVER 7.5M. For pipe runs over 7.5m, extra refrigerant and oil must be added to the system for each additional metre over 7.5m, based on the above PLUS the following: Liquid line size (ins) 1/4 3/8 Expansion line size (ins) 3/8 1/2 5/8 Additional refrigerant (g/m) Additional oil (same as supplied) 25g per 350g of additional R22/R407C The above charge weights are calculated for use in U.K. conditions. If the room conditions will always be 27 C db/19 C wb and above, (NEMA and higher), the required charge should be increased by 8% prior to making adjustments for additional line lengths. WHEN INSTALLATION HAS BEEN COMPLETED, CHECK :- 1 All pipe work and joints for leakage. 2 All pipe work and fittings for insulation. 3 All bolts are secure and that the fan rotates freely. LC WIRING DIAGRAM -13-

14 MCU WIRING DIAGRAMS 1 Phase MCU 20 to 80 3 Phase MCU 50 to 80 MCU+ WIRING DIAGRAMS 1 Phase MCU+ 20 to 80 3 Phase MCU+ 50 to

15 ELECTRONIC DCUE WIRING DIAGRAMS 1 Phase DCUE 20 and 50 1 Phase DCUE

16 3 Phase DCUE 50 and

17 INTERCONNECTING WIRING DIAGRAMS with 1 Phase MCU(+) with 1 Phase MCU(+) with 3 Phase MCU(+)

18 1Ph LC with DCUE and 1Ph LC 230 with DCUE

19 3Ph LC WITH DCUE

20 OPERATING INSTRUCTIONS The operating switches are located at the left hand side of the coil on the front of the unit. These function as follows: ON/OFF SWITCHING The upper rocker switch (red neon) is the On/Off switch. This operates the fan motor and is illuminated when power is supplied to the unit. When switched off, the unit is stopped but the crankcase heater in the condensing unit will remain live. TEMPERATURE CONTROL The lower knob operates a heat/cool thermostat which can be adjusted within a nominal range of 8 C - 23 C. The selected temperature is automatically controlled by a thermostat sensing return room air. LOWER room temperatures can be maintained by turning the knob clockwise in the direction of the arrow marked 'Cooler'. This will operate the compressor if the room is too warm and hence cool the room. HIGHER room temperatures can be maintained by turning the knob counter-clockwise in the direction of the arrow marked 'Warmer'. This will only heat the room if an electric heater is fitted. The dot shown represents a nominal setting of 10 C, sensed at the return air grille. OPERATION Always allow at least three minutes between operations which stop and start the compressor, i.e., 1 Do not turn the unit off and straight back on. 2 Do not turn the lower rotary control knob from 'Cooler' to 'Warmer' and straight back to 'Cooler'. This will allow the system pressures to equalize and prevent any compressor damage. -20-

21 CELLAR COOLER HEATER KITS ITEM QTY DESCRIPTION PART NUMBER MODELS USED ON 1 1 Heater Assembly including Wires LC 100/170 (3kW at 240V) It is preferable to fit this kit prior to installing the unit LC 230 (3.75kW at 240V) ISOLATE THE SYSTEM ELECTRICALLY PRIOR TO INSTALLATION OF THIS KIT. 1 Remove the drip catcher and the drip tray by releasing the six screws. 2 Slacken the remaining two screws at the front of the unit. 3 Remove the electrics access panel by releasing the four screws. 4 Slide the heater assembly into place between the lips at the top and side of the coil and secure in place with the existing screws. Heat/Cool Thermostat (viewed from the rear) 5 Remove the grommet in the left hand side panel and feed the wires through into the electrics compartment; fit the appropriate grommet supplied on the wires into the hole and discard the other grommet. 6 Connect the glass-lap lead to terminal 3 on the Heat/Cool thermostat and the black lead to the piggy-back terminal on the white lead connected to the capacitor. Connect the green/yellow lead to the earth stud in the electrics compartment. 7 Replace the electrics panel, drip tray and drip collector. NOTE: Check to ensure that the mains fuse is correctly sized, (see the table below). MODEL LC 100 LC 170 (1PH) LC 170 (3PH) LC 230 FUSE SIZE 20 AMPS 20 AMPS 16 AMPS 32 AMPS -21-

22 INDOOR UNIT COMPONENT IDENTIFICATION ITEM No. DESCRIPTION 1 FAN COWL 2 GRILLE 3 ROCKER SWITCH 3a SPLASH COVER 4 THERMOSTAT 5 TERMINAL BLOCK 6 CABLE CLAMP 7 CAPACITOR (FAN MOTOR) 8 FAN MOTOR 9 MOTOR MOUNTING PLATE 10 FAN 11 CHASSIS ASSEMBLY 12 HEATER FRAME 13 HEATER ELEMENT 14 HEATER SAFETY CUT OUT 15 HEATER KIT 16 DRIP PLATE 17 EVAPORATOR COIL ASSEMBLY 18 DRIP TRAY ASSEMBLY 19 THERMOSTAT KNOB -22-

23 MCU(+) Heronhill - for all your IMI requirements ITEM No. DESCRIPTION ITEM No. DESCRIPTION ITEM No. DESCRIPTION 1 Lid 14 Service valve (Liquid) 27 Motor bracket 2 LP switch 15 Valve panel 28 End clamp 3 Contactor 16 Base 29 Terminal (screw - screw) 4 Overload 17 Mounting foot 30 Fuse 5 Heat exchanger 18 Compressor 31 Fuse terminal 6 Rear access panel 19 Handle 32 Terminal (4 way) 7 Mains terminal cover 20 Front access panel 33 Earth terminal 8 HP switch manual 21 Fan guard 34 Head pressure control 9 Fan capacitor 22 Fascia panel 35 3 minute timer pcb 10 Switch bracket 23 Corner panel 36 Compressor capacitor 11 Bulkhead panel 24 Support bracket 37 Electrics box 12 Expansion assembly (inc. restrictor) 25 Motor 13 Service valve (Suction) 26 Fan -23-

24 DCUE Heronhill - for all your IMI requirements COMPONENT IDENTIFICATION ITEM No. DESCRIPTION ITEM No. DESCRIPTION 1 Lid 13 Electrics access panel 2 Blower assembly 14 Handle 3 Right hand access panel 15 Suction service valve 4 Spire clip 16 Isolator 5 LP Switch auto 17 End clamp 6 HP Switch auto 18 Terminal 7 4 way terminal 19 Power board pcba 8 Fused terminal 20 Overload (3PH) 9 Compressor 21 Contactor 10 Crankcase heater 22 Fan capacitor 11 Expansion assembly (including restrictor) 23 Compressor capacitor (1PH) 12 Liquid service valve -24-