Lennox INNOV DM R Series Application Manual
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Lennox INNOV DM R Series Application Manual

Close control unit ec plug fan
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APPLICATION
GUIDE
Close control unit
EC plug fan
6  22 kW
INNOV@
DM_R
INNOVA ECFAN DMR-AGU-0912-E
lennoxemeia.com

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Summary of Contents for Lennox INNOV DM R Series

  • Page 1 APPLICATION GUIDE INNOV@ DM_R Close control unit EC plug fan 6  22 kW INNOVA ECFAN DMR-AGU-0912-E lennoxemeia.com...

  • Page 3: Table Of Contents

    Index 1 - General Description ......................3 1.1 Structure ..............................4 1.2 Application limits ........................... 4 1.3 DX units cooling circuit ......................... 5 1.4 “CW” units hydraulic section ....................... 6 1.5 Installation general rules ........................8 2 - Inspection / Transport / Positioning .................. 8 2.1 Inspection on receipt ..........................
  • Page 4 Codification This codification describe the whole INNOV@ range. All operating modes are not available on each type of unit. Type of unit Medium range height 1875mm High range height 1998mm ENERGY range : eDrive unit with EC plug fan and BLDC compressor Operating mode Direct expansion with remote condenser Direct expansion water condensed with remote dry-cooler...

  • Page 5: General Description

    General Description INNOV@DM-R “CCAC” self-contained units are specially designed for installation in technological environments such as Computer rooms, laboratories and in general where a high precision in climate control and a 24h/day operation are requested. INNOV@DM-R units represent the state of the art between technology and design as well as all our products: thanks to their characteristics, INNOV@DM-R can be installed also in offices where people are working.

  • Page 6: Structure

    Structure INNOV@DM-R units are designed with a self supporting frame and all components are made inside using sophisticated computer driven machines and special tools. All sheet metals are galvanized and all external panels are powder coated RAL 9002 giving to the units the image and the quality like last generation of IT devices. Units are completely closed and only frontal access is requested.

  • Page 7: Dx Units Cooling Circuit

    DX units cooling circuit The entire refrigerating circuit is assembled in our warehouse including all pipe work and using only primary brand for components. The workers involved in the welding and pipe work process are qualified by a third part according CEE 97/23 PED directive: it is worth to be underlined that this qualification for workers were not request, but it is our own decision taking care of the quality and/or in general to the customer satisfaction.

  • Page 8: Cw" Units Hydraulic Section

    “CW” units hydraulic section 3-way valve The 3-way valve used on INNOV@DM-R CW version units for inlet water flow regulation allowing a foundamentally maximum precision’s regulation on CCAC applications. Tab. 3 Technical characteristics Frame 1 Frame 2 Frame 3 Brand / valve’s type Controls VMT2 Controls VMT2 Controls VMBT3...
  • Page 9 Fig. 3 Basic cooling circuit (DX version) Compressor HP pressure switch Pressure transmitter Ball valve Refrigerant filter Sight glass Thermostatic valve Evaporating coil LP pressure switch Liquid receiver Remote condenser Flooding valve Safety valve Check valve Fig. 4 Basic cooling circuit (CW version) Chilled water inlet Chilled water outlet 3-way valve...

  • Page 10: Installation General Rules

    Installation general rules D When installing or servicing the unit, you must strictly follow the rules provided in this manual, comply with the directions on the units themselves and take all such precautions as are necessary. D The fluids under pressure in the cooling circuit and the presence of electrical components may cause hazardous situations during installation and maintenance work.

  • Page 11: Installation

    Installation The INNOV@DM-R package air-conditioning unit is suitable for all environments except aggressive ones. Do not place any obstacles near the units and make sure that the air flow is not impeded by obstacles and/or situations causing back suction. Fig. 5 Service area MODEL A (mm)

  • Page 12: Evacuation And Charging Operations For Dx-Type Units

    The recommended sizes for the power cables and emergency line are shown in the table below: Tab. 4 INNOV@DM-R “CW” MODEL Power supply Cable type DMCDR0080 4 x 2,5 mm + T 2,5 mm DMCDR0110 DMCDR0140 400V / 3Ph + N / 50Hz DMCDR0160 4 x 4,0 mm + T 4,0 mm...

  • Page 13: Full Vacuum And Charge Of The Unit

    Full vacuum and charge of the unit Vacuum cycle In general it is better to apply a “long” rather than a “hard” vacuum: reaching a low pressure too abruptly may in fact cause that any remaining humidity evaporates instantaneously, thus freezing part of it. Fig.

  • Page 14: Charging Positions (Single Point)

    2 ) If a high % of refrigerant gets in contact with the Pirani gauge (vacuum sensor), it may “mislead” this sensitive sensor and misinterpret the value for a certain period of time. For this reason, if no machine for recovering refrigerant is available, it is nonetheless advisable to switch on the crankcase heater and to avoid full vacuum before the circuit has been adequately purged of refrigerant.

  • Page 15: Operating Diagrams

    Operating Diagrams Fig. 9 Operating diagrams INNOV@DM-R “DX" direct expansion unit Mod. DMADR Mod. DMAUR Mod. DMAXR Downflow version Upflow version Displacement version INNOV@DM-R “CW" chilled water unit Mod. DMCDR Mod. DMCUR Mod. DMCXR Downflow version Upflow version Displacement version Return air Conditioned air INNOV@ ECFAN DMR -AGU-0912-E...

  • Page 16: Start-Up

    Start-Up Preliminary checks D Check that the electrical connections have been made properly and that all the terminals are securely tightened. This check should also be included in a periodic six-month inspection. D Check that the voltage at the RST terminals is 400 V ± 5% and make sure the yellow indicator light of the phase sequence relay is on.

  • Page 17: Maximum Pressure Switch

    Tab. 6 Setting of control devices Control device Set point Differential air pressure switch (outlet air flow) Differential air pressure switch (dirty filter) Values to be calibrated depending on the application. Tab. 7 Setting of safety-control devices Control device Activation Differential Resetting Maximum pressure switch...

  • Page 18: Periodical Checks

    Periodical checks To guarantee a constantly satisfactory performance over time, it is advisable to carry out routine maintenance and checks as described below. Tab. 8 Periodical checks Operation Frequency Check the efficiency of all the control and safety devices. Once a year Check the terminals on the electric control board and compressor terminal boards to ensure that they are securely tightened.

  • Page 19: Set The Right Fan Speed

    The relief valve is accessible in the units from front of the machines Set the right fan speed The adopted fans are of the backward curved blades type in combination with a 4 poles e-motor. This kind of fan has very high performances so that it’s speed has to be reduced in order to match to the nominal air flow with the real external pressure drops: in case of wrong selection, the air flow may exceed the limits with possible water dragging out from the coils (down flow units).

  • Page 20: Ec Fans

    EC fans Tab. 9 AESP (Pa) with the different control tensions (0 - 10 V) for the EC fan(s) DMADR 060 10 V Basic + Filter Basic + Filter + Heater Basic + Filter + Add coil Free Cooling + Filter Free Cooling + Filter + Heater Free Cooling + Filter + Add coil DMADR 080...

  • Page 21: Repairing The Cooling Circuit

    Repairing the cooling circuit Warning: While performing repairs on the cooling circuit or maintenance work on the compressor make sure the circuit is left open for as little time as possible. Even if briefly exposed to air, ester oils tend to absorb large amounts of humidity, which results in the formation of weak acids.

  • Page 22: Environmental Protection

    Since R407C is a ternary mixture, charging must take place exclusively with liquid refrigerant to ensure the correct percentages of the three constituents. Introduce refrigerant through the inlet in the liquid line. A unit that was originally charged with R407C in the factory must not be charged with R22 or other refrigerants without the written authorisation of factory Environmental protection The law implementing the regulations (reg.

  • Page 23: Checking The Refrigerant Level (Dx Version)

    10.3 Checking the refrigerant level (DX version) D After a few hours of operation, check whether the liquid level indicator has a green ring: a yellow colour indicates the presence of humidity in the circuit. In such a case the circuit must be dehumidified by qualified personnel. D Large quantities of bubbles should not appear through the liquid level indicator.

  • Page 24: Troubleshooting

    11 Troubleshooting On the next pages you will find a list of the most common reasons that may cause the package unit to fail or any malfunction. This causes are broken down according to easily identifiable symptoms. You should be extremely careful when attempting to implement any of the possible remedies suggested: overconfidence can result in injuries, even serious ones, to inexpert individuals.

  • Page 25: Technical Data

    12 Technical Data Tab. 11 DX unit - air cooled - DMADR / DMAUR DMADR / DMAUR 0060 0080 0100 0110 0130 0160 0190 0205 MODELS: Power supply V/Ph/Hz 400V / 3Ph + N + PE / 50Hz Air flow 1785 2150 3530...
  • Page 26 Tab. 12 DX unit - “dry cooler” water cooled - DMWDR / DMWUR DMWDR / DMWUR 0060 0080 0100 0110 0130 0160 0190 0205 MODELS: Power supply 400V / 3Ph + N + PE / 50Hz V/Ph/Hz Air flow 1785 2150 3530 3530...
  • Page 27 Tab. 13 DX unit - “dry cooler” water cooled indirect freecooling - DMFDR / DMFUR DMFDR / DMFUR 0060 0080 0100 0110 0130 0160 0190 0205 MODELS: Power supply V/Ph/Hz 400V / 3Ph + N + PE / 50Hz Air flow 1785 2150 3530...
  • Page 28 Tab. 14 DX unit - city water cooled - DMZDR / DMZUR DMZDR / DMZUR 0060 0080 0100 0110 0130 0160 0190 0205 MODELS: Power supply V/Ph/Hz 400V / 3Ph + N + PE / 50Hz Air flow 1785 2150 3530 3530 3700...
  • Page 29 Tab. 15 CW unit - DMCDR / DMCUR DMCDR / DMCUR 0080 0110 0140 0160 0200 0230 MODELS: Power supply V/Ph/Hz 400V / 3Ph + N + PE / 50Hz Air flow 2300 2400 3800 3800 5100 5100 Water flow at 7/12°C 0.36 0.50 0.67...
  • Page 30 LENNOX DISTRIBUTION PORTUGAL  +33 4 72 23 20 00  +351 229 066 050 Due to Lennox’s ongoing commitment to quality, the specifi cations, ratings and dimensions are subject to change without notice and without incurring liability. Improper installation,...
  • Page 31 APPLICATION GUIDE INNOV@ DH_R Close control unit EC plug fan 20  120 kW 30  236 kW INNOVA ECFAN DHR-AGU-0912-E lennoxemeia.com...
  • Page 33 Index General Description ......................2 Structure............................. 4 Application limits ......................... 4 Cooling circuit ..........................5 Installation warnings ........................8 Inspection / Transport / Positioning ................... 9 Inspection on receipt ........................9 Lifting and transport ........................9 Unpacking ..........................9 Positioning ..........................9 Installation ..........................
  • Page 34 Codification This codification describe the whole INNOV@ range. All operating modes are not available on each type of unit. Type of unit Medium range height 1875mm High range height 1998mm ENERGY range : eDrive unit with EC plug fan and BLDC compressor Operating mode Direct expansion with remote condenser Direct expansion water condensed with remote dry-cooler...
  • Page 35 24h/day operation are requested. INNOV@ units represent the state of the art between technology and design as well as all LENNOX products: thanks to their characteristics, INNOV@ can be installed also in offices where people are working. The depth of 795 mm (950 mm for frame 4 and 5), allows the compatibility with standard electronic devices: furthermore the innovative design and the high tech selected colours make INNOV@ units complementary to the last generation of IT devices.
  • Page 36 Structure INNOV@ units are designed with a self supporting frame and all components are produced using sophisticated computer driven machines and special tools. All sheet metals are galvanized and all external panels are powder coated RAL 9002 giving to the units the image and the quality like last generation of IT devices.
  • Page 37 Cooling circuit The entire refrigerating circuit is assembled in our production line including all pipe work and using only primary brand for components. The workers involved in the welding and pipe work process are qualified by a third part according CEE 97/23. The DX unit are prechargerd with dry nitrogen for “A”, “D”...
  • Page 38 Fig. 3 1 circuit - basic cooling circuit (DX version) Pos. Description Pos. Description Compressor Condenser coil HP pressure switch Flooding valve Pressure transmitter (Opt.) Safety valve Ball valve Check valve Refrigerant filter Solenoid valve Sight glass Hot gas coil (Opt.) Thermostatic valve Hot gas check valve (Opt.) Evaporating coil...
  • Page 39 Fig. 4 2 circuits - basic cooling circuit (DX version) Pos. Description Pos. Description Compressor LP pressure switch HP pressure switch Liquid receiver Pressure transmitter (Opt.) Condenser coil Ball valve Flooding valve Refrigerant filter Safety valve Sight glass Check valve Thermostatic valve Solenoid valve Evaporating coil...
  • Page 40 Fig. 5 Basic cooling circuit (CW version) Standard Opt. 2-way valve Pos. Description Pos. Description Chilled water inlet Coil heat exchanger Chilled water outlet Breather valve 3-way valve 2-way valve (Opt.) Plug fan Installation warnings General rules · When installing or servicing the unit, you must strictly follow the rules provided in this manual, comply with the directions on the units themselves and take all such precautions as are necessary.
  • Page 41 “Delivery Slip” before signing it. LENNOX or its agent must be promptly notified of the entity of the damage. The Customer must submit a written report describing every significant sign of damage.
  • Page 42 Front view Lateral view Bottom view Model A (mm) B (mm) DX version DHADR0201 - DHAUR0201 1010 DHADR0251 - DHAUR0251 DHADR0281 - DHAUR0281 1270 DHADR0311 - DHAUR0311 DHADR0401 - DHAUR0401 DHADR0272 - DHAUR0272 DHADR0302 - DHAUR0302 1760 DHADR0362 - DHAUR0362 DHADR0422 - DHAUR0422 DHADR0452 - DHAUR0452 DHADR0532 - DHAUR0532...
  • Page 43 Model A (mm) B (mm) CW version DHCDR0300 - DHCUR0300 1010 DHCDR0380 - DHCUR0380 DHCDR0450 - DHCUR0450 1270 DHCDR0550 - DHCUR0550 DHCDR0400 - DHCUR0400 DHCDR0500 - DHCUR0500 1760 DHCDR0650 - DHCUR0650 DHCDR0750 - DHCUR0750 DHCDR0890 - DHCUR0890 2020 DHCDR1090 - DHCUR1090 DHCDR0900 - DHCUR0900 DHCDR1000 - DHCUR1000 2510...
  • Page 44 Installation The INNOV@ air-conditioning unit is suitable for all environments except aggressive ones. Do not place any obstacles near the units and make sure that the air flow is not impeded by obstacles and/or situations causing back suction. Fig. 7 Service area Model A (mm)
  • Page 45 Model A (mm) B (mm) C (mm) D (mm) E (mm) DX version DHADR0201 - DHAUR0201 1010 1998 DHADR0251 - DHAUR0251 DHADR0281 - DHAUR0281 1270 1998 DHADR0311 - DHAUR0311 DHADR0401 - DHAUR0401 DHADR0272 - DHAUR0272 DHADR0302 - DHAUR0302 1760 1998 DHADR0362 - DHAUR0362 DHADR0422 - DHAUR0422 DHADR0452 - DHAUR0452...
  • Page 46 Evacuation and Charging Operations This type of work must be carried out by qualified personnel only trained to do their job in accordance with current laws and regulations. Introductions The contemporaneous presence of liquid and vapour requires for both to be in a state of saturation (Gibb’s law), as shown in Fig.
  • Page 47 The figure Fig. 9 represents a vacuum cycle and an optimal subsequent pressure rise for the refrigeration devices we manufacture. Generally in bigger refrigeration systems or if there is a suspicion of an extensive quantity of humidity in the refrigeration circuit, the vacuum needs to be “broken” by using anhydrous nitrogen. Then the steps of evacuation need to be repeated as described before.
  • Page 48 Electrical Connections Generalities Before carrying out any job on electrical parts, make sure the power supply is disconnected Check that the mains electricity supply is compatible with the specifications (voltage, number of phases, frequency) shown on the unit rating plate. The power connection for single-phase loads is to be made with a three-pole cable and “N”...
  • Page 49 Operating Diagrams UPFLOW DOWNFLOW DISPLACEMENT INNOV@ ECFAN DHR -AGU-0912-E • 17 •...
  • Page 50 Start-Up Preliminary checks · Check that the electrical connections have been made properly and that all the terminals are securely tightened. This check should also be included in a periodic six-month inspection. · Check that the voltage at the RST terminals is 400 V ± 10% and make sure the yellow indicator light of the phase sequence relay is on (only DX versions).
  • Page 51 Checks during operations Check the phase sequence relay (only DX versions) on the control board to verify whether the phases occur in the correct sequence: if they do not, disconnect the unit from power supply and invert two phases of the incoming three-pole cable.Never attempt to modify internal electrical connections: any undue modifications will immediately invalidate the warranty.
  • Page 52 Setting Operating Parameters Generalities All the control devices are set and tested in the factory before the unit is dispatched. However, after the unit has been in service for a reasonable period of time you can perform a check on the operating and safety devices. The settings are shown in tab.
  • Page 53 Maintenance The only operations to be performed by the user are to switch the unit on and off. All other operations are to be considered maintenance work and must thus be carried out by qualified personnel trained to do their job in accordance with current laws and regulations.
  • Page 54 Fig. 13 Inspecting the air filter (Downflow “CW” and “DX” version) Open the front panels to access the air filter compartment. Pull out the air filter. Check the condition of the filter and replace it if necessary. Air filter Fig. 14 Inspecting the air filter (Upflow “CW”...
  • Page 55 Fig. 15 Purging the air out of the water coil (CW version) · The relief valve is accessible in the units from front of the machines. See the details in the following pictures. Set the right fan speed The adopted fans are of the backward curved blades type in combination with a 4 poles e-motor. This kind of fan has very high performances so that it’s speed has to be reduced in order to match to the nominal air flow with the real external pressure drops: in case of wrong selection, the air flow may exceed the limits with possible water dragging out from the coils (down flow units) or in case of DC units.
  • Page 56 The fan speed has to be selected according to the enclosed table. In the EC fans the rotation speeds are selected with different values of the control tension (0 - 10V). If in the unit is present the advanced control the right value of the control tension is set by the keyboard present in the advanced control.
  • Page 57 Tightness test Fill the circuit with anhydrous nitrogen supplied from a tank with a pressure-reducing valve until the pressure rises to 22 bars. During the pressurization phase, do not exceed a pressure of 22 bars on the compressor low pressure side. The presence of any leaks must be determined using special leak detectors.
  • Page 58 Troubleshooting On the next pages you will find a list of the most common reasons that may cause the package unit to fail or any malfunction. This causes are broken down according to easily identifiable symptoms. You should be extremely careful when attempting to implement any of the possible remedies suggested: overconfidence can result in injuries, even serious ones, to inexpert individuals.
  • Page 59 Technical Data tab. 10 DX unit - air cooled - DHADR - DHAUR DHADR MODELS 0201 0251 0281 0311 0401 DHAUR Power supply V/Ph/Hz 400V / 3Ph + N + PE / 50Hz Air flow 6800 7280 12950 COMPRESSOR Type Scroll Cooling capacity (24 C;...
  • Page 60 DHADR MODELS 0272 0302 0362 0422 0452 DHAUR Power supply V/Ph/Hz 400V / 3Ph + N + PE / 50Hz Air flow 12950 COMPRESSOR Type Scroll Cooling capacity (24 C; 50% RH; external air T 35 C) 26.9 31.9 35.9 41.9 44.3 Power consumption...
  • Page 61 DHADR MODELS 0532 0592 0602 0692 0762 DHAUR Power supply V/Ph/Hz 400V / 3Ph + N + PE / 50Hz Air flow 14150 19415 COMPRESSOR Type Scroll Cooling capacity (24 C; 50% RH; external air T 53.94 59.08 64.44 71.03 78.59 35 C) Power consumption...
  • Page 62 DHADR MODELS 1002 1204 DHAUR V/Ph/Hz Power supply 400V / 3Ph + N + PE / 50Hz Air flow 21500 24000 COMPRESSOR Type Scroll Cooling capacity (24 C; 50% RH; external air T 94.4 124.7 35 C) Power consumption 25.7 33.8 Nominal current 44.1...
  • Page 63 tab. 11 DX unit (1 compressor) - water condensed - DHZDR - DHZUR DHZDR MODELS 0201 0251 0281 0311 0401 DHZUR V/Ph/Hz Power supply 400V / 3Ph + N + PE / 50Hz Air flow 6800 7280 12950 WATER TEMPERATURE 15 C / 30 C Cooling capacity 25.26 26.26...
  • Page 64 tab. 12 DX unit (2 compressors) - water condensed - DHZDR - DHZUR DHZDR MODELS 0272 0302 0362 0422 0452 DHZUR V/Ph/Hz Power supply 400V / 3Ph + N + PE / 50Hz Air flow 12950 WATER TEMPERATURE 15 C / 30 C Cooling capacity 27.90 34.60...
  • Page 65 DHZDR MODELS 0532 0592 0602 0692 0762 DHZUR Power supply V/Ph/Hz 400V / 3Ph + N + PE / 50Hz Air flow 14150 19415 WATER TEMPERATURE 15 C / 30 C Cooling capacity 59.84 66.19 71.23 79.82 87.59 Power consumption 10.92 12.76 12.82...
  • Page 66 DHZDR MODELS 1002 1204 DHZUR Power supply V/Ph/Hz 400V / 3Ph + N + PE / 50Hz Air flow 21500 24000 WATER TEMPERATURE 15 C / 30 C Cooling capacity 138.5 Power consumption 23.1 Waterflow [l/h] 7180 9311 Pressure drop [kPa] 18.4 13.5...
  • Page 67 tab. 11 DX unit (1 compressor) - water condensed - DHWDR - DHWUR DHWDR MODELS 0201 0251 0281 0311 0401 DHWUR V/Ph/Hz Power supply 400V / 3Ph + N + PE / 50Hz Air flow 6800 7280 12950 WATER TEMPERATURE 40 C / 45 C (30% e.g.) Cooling capacity 21.71 22.74...
  • Page 68 tab. 12 DX unit (2 compressors) - water condensed - DHWDR - DHWUR DHWDR MODELS 0272 0302 0362 0422 0452 DHWUR V/Ph/Hz Power supply 400V / 3Ph + N + PE / 50Hz Air flow 12950 WATER TEMPERATURE 40 C / 45 C (30% e.g.) Cooling capacity 23.50 28.90...
  • Page 69 DHWDR MODELS 0532 0592 0602 0692 0762 DHWUR Power supply V/Ph/Hz 400V / 3Ph + N + PE / 50Hz Air flow 14150 19415 WATER TEMPERATURE 40 C / 45 C (30% e.g.) Cooling capacity 52.32 58.06 62.10 69.85 77.02 Power consumption 14.78 17.28...
  • Page 70 DHWDR MODELS 1002 1204 DHWUR Power supply V/Ph/Hz 400V / 3Ph + N + PE / 50Hz Air flow 21500 24000 WATER TEMPERATURE 40 C / 45 C (30% e.g.) Cooling capacity 92.5 122.2 Power consumption 30.2 36.9 Waterflow [l/h] 23121 30399 Pressure drop...
  • Page 71 tab. 13 CW unit (nominal air flow) - DHCDR - DHCUR DHCDR MODELS DHCUR Power supply V/Ph/Hz 400V / 3Ph + N + PE / 50Hz Tot. cool. capacity 28.1 42.5 47.2 56.6 44.6 56.9 (T water 7/12°C; T air 24°C, 50% RH) Water flow 4837 7318...
  • Page 72 DHCDR 1090 1000 MODELS DHCUR 1090 1000 Power supply V/Ph/Hz 400V / 3Ph + N + PE / 50Hz Tot. cool. capacity 74.1 85.6 90.6 110.7 87.8 (T water 7/12°C; T air 24°C, 50% RH) Water flow 12754 14733 15598 18442 15114 19275...
  • Page 73 DHCDR 1200 1500 1800 2100 MODELS DHCUR 1200 Power supply V/Ph/Hz 400V / 3Ph + N + PE / 50Hz Tot. cool. capacity 126.9 151.4 236.1 (T water 7/12°C; T air 24°C, 50% RH) Water flow 21838 26053 28736 40628 Air flow 21400 26200...
  • Page 74 LENNOX DISTRIBUTION PORTUGAL  +33 4 72 23 20 00  +351 229 066 050 Due to Lennox’s ongoing commitment to quality, the specifi cations, ratings and dimensions are subject to change without notice and without incurring liability. Improper installation,...
  • Page 75 APPLICATION GUIDE INNOV@ DM_C Centrifugal close control unit 6  22 kW INNOVA CENT-AGU-0912-E lennoxemeia.com...
  • Page 77 Index General Description Structure Field of application Cooling circuit (DX version) Hydraulic section (CW version) Installation warnings Inspection / Transport / Positioning Inspection on receipt Lifting and transport Unpacking Positioning Installation Evacuation and Charging Operations Introductions Full vacuum and charge of the unit Evacuating a circuit “contaminated”...
  • Page 78 Codification This codification describe the whole INNOV@ range. All operating modes are not available on each type of unit. Type of unit Medium range height 1875mm High range height 1998mm ENERGY range : eDrive unit with EC plug fan and BLDC compressor Operating mode Direct expansion with remote condenser Direct expansion water condensed with remote dry-cooler...
  • Page 79 General Description INNOV@ DM “CCAC” self-contained units are specially designed for installation in technological environments such as Computer rooms, laboratories and in general where a high precision in climate control and a 24h/day operation are requested. INNOV@ units represent the state of the art between technology and design as well as all our products: thanks to their characteristics, INNOV@ can be installed also in offices where people are working.
  • Page 80 Fig. 2 CW version (Down / Up) DMCDC unit DMCUC unit (Down-flow) (Up-flow) Filter Electrical panel Electrical heaters Centrifugal fan Humidifier Electrical valve actuator Microprocessor control 3-way valve Structure INNOV@ units are designed with a self supporting frame and all components are made inside using sophisticated computer driven machines and special tools.
  • Page 81 Field of application All INNOV@ units are to be used within the operating limits stated in this manual; failure to comply with said limits will invalidate the warranties provided in the contract of sale (see Tab. 1, Tab. 2 and Fig. 3). Tab.
  • Page 82 D Molecular mesh activated-alumina filter dryer. D Flow indicator with humidity indicator. Indications are provided directly on the sight glass. D Thermostatic valve with external equalization and integrated MOP function. D High and low pressure switches. D Schrader valves for checks and/or maintenance. INNOV@ CENT -AGU-0912-E .
  • Page 83 Electric control board The electric control board is constructed and wired in accordance with Directives 73/23/EEC and 89/336/EEC and related standards. The board may be accessed through a door after the main switch has been put-off. All the remote controls use 24 V signals powered by an insulating transformer situated on the electric control board. Note: The mechanical safety devices such as the high pressure switch are of the kind that trigger directly;...
  • Page 84 Hydraulic section (CW version) 3-way valve The 3-way valve used on INNOV@DM CW version units for inlet water flow regulation allowing a foundamentally maximum precision’s regulation on CCAC applications. Tab. 3 Technical characteristics Frame 1 Frame 2 Frame 3 Brand / valve’s type Controls VMT2 Controls VMT2 Controls VMBT3...
  • Page 85 Installation warnings General rules D When installing or servicing the unit, you must strictly follow the rules provided in this manual, comply with the directions on the units themselves and take all such precautions as are necessary. D The fluids under pressure in the cooling circuit and the presence of electrical components may cause hazardous situations during installation and maintenance work.
  • Page 86 Fig. 6 Dimensions 1875 Front view Lateral view Bottom view Model A (mm) B (mm) DX version DMADC0060 - DMAUC0060 DMADC0080 - DMAUC0080 DMADC0100 - DMAUC0100 DMADC0110 - DMAUC0110 DMADC0130 - DMAUC0130 DMADC0160 - DMAUC0160 DMADC0190 - DMAUC0190 1200 DMADC0205 - DMAUC0205 DMADC0132 - DMAUC0132 DMADC0162 - DMAUC0162 1200...
  • Page 87 Installation The INNOV@ package air-conditioning unit is suitable for all environments except aggressive ones. Do not place any obstacles near the units and make sure that the air flow is not impeded by obstacles and/or situations causing back suction. Fig. 7 Service area MODEL A (mm)
  • Page 88 The following steps should be carried out to ensure proper installation: D Apply a anti-vibration rubber lining between the unit and the bottom. D Positioning the unit on the floor / base frame. D Further info to be added. The recommended sizes for the power cables and emergency line are shown in the tables below: Tab.
  • Page 89 Evacuation and Charging Operations This type of work must be carried out by qualified personnel only trained to do their job in accordance with current laws and regulations. Introductions The contemporaneous presence of liquid and vapour requires for both to be in a state of saturation (Gibb’s law), as shown in Fig.
  • Page 90 steps of evacuation need to be repeated as described before. This operation facilitates the removal of remaining and/or frozen humidity during the evacuation process. Evacuating a circuit “contaminated” with refrigerant The first step is to remove the refrigerant from the circuit. To do this a specific machine is necessary with a drying compressor in order to recover the refrigerant.
  • Page 91 Electrical Connections Generalities Before carrying out any job on electrical parts, make sure the power supply is disconnected. Check that the mains electricity supply is compatible with the specifications (voltage, number of phases, frequency) shown on the unit rating plate. The power connection for single-phase loads is to be made with a three-pole cable and “N”...
  • Page 92 Operating Diagrams Fig. 11 Operating diagrams INNOV@DM “DX" direct expansion unit Mod. DMADC Mod. DMAUC Mod. DMAXC Downflow version Upflow version Displacement version Return air Conditioned air INNOV@ CENT -AGU-0912-E . 16 .
  • Page 93 Starting Up Preliminary checks D Check that the electrical connections have been made properly and that all the terminals are securely tightened. This check should also be included in a periodic six-month inspection. D Check that the voltage at the RST terminals is 400 V ± 5% and make sure the yellow indicator light of the phase sequence relay is on.
  • Page 94 Checking the refrigerant level (DX version) D After a few hours of operation, check whether the liquid level indicator has a green ring: a yellow colour indicates the presence of humidity in the circuit. In such a case the circuit must be dehumidified by qualified personnel.
  • Page 95 Operating Parameters Setting Generalities All the control devices are set and tested in the factory before the unit is dispatched. However, after the unit has been in service for a reasonable period of time you can perform a check on the operating and safety devices. The settings are shown in Tab.
  • Page 96 Maintenance The only operations to be performed by the user are to switch the unit On and Off. All other operations are to be considered maintenance work and must thus be carried out by qualified personnel trained to do their job in accordance with current laws and regulations. Warnings All the operations described in this chapter MUST ALWAYS BE PERFORMED BY QUALIFIED PERSONNEL ONLY.
  • Page 97 Fig. 13 Inspecting the air filter “Down-Flow" version Air filter “Up-Flow" version Air filter Remove the panel above the evaporator fan to access the damper and air filter compartment. Pull out the air filter. Check the condition of the filter and replace it if necessary. INNOV@ CENT -AGU-0912-E .
  • Page 98 Repairing the cooling circuit Warning: While performing repairs on the cooling circuit or maintenance work on the compressors, make sure the circuit is left open for as little time as possible. Even if briefly exposed to air, ester oils tend to absorb large amounts of humidity, which results in the formation of weak acids.
  • Page 99 Recharging with refrigerant R407C D Connect the tank of refrigerant gas to the male 1/4 SAE inlet situated on the liquid line after discharging a little gas to eliminate air in the connection pipe. D Fill with refrigerant in liquid form until you reach 75% of the total charge. D Then connect to the inlet on the pipe between the thermostatic valve and evaporator and complete the charging process with the refrigerant in liquid form until no more bubbles can be seen on the liquid level indicator and the operating parameters specified in section 8 have been reached.
  • Page 100 10 Troubleshooting On this pages you will find a list of the most common reasons that may cause the package unit to fail or any malfunction. This causes are broken down according to easily identifiable symptoms. You should be extremely careful when attempting to implement any of the possible remedies suggested: overconfidence can result in injuries, even serious ones, to inexpert individuals.
  • Page 101 11 Technical Data Tab. 10 DMADC - DMAUC (DX unit - Air cooled) DMADC MODELS 0060 0080 0100 0110 0130 0160 0190 0205 DMAUC V/Ph/Hz Power supply 400V / 3Ph + N + PE / 50Hz Air flow 1785 2150 3530 3530 3470...
  • Page 102 DMADC MODELS 0060 0080 0100 0110 0130 0160 0190 0205 DMAUC SOUND LEVEL Sound pressure level dB(A) DIMENSIONS Heigh x Lenght x Depth 1850x600x449 1850 x 900 x 449 1850 x 1200 x 449 Unit weight (*) At 1,5 meters height, 2 meters frontal distance in free field; down flow units (20 Pa AESP); nominal air flow. INNOV@ CENT -AGU-0912-E .
  • Page 103 Tab. 11 DMWDC - DMWUC (DX unit - Water cooled) DMWDC MODELS 0060 0080 0100 0110 0130 0160 0190 0205 DMWUC V/Ph/Hz Power supply 400V / 3Ph + N + PE / 50Hz Air flow 1785 2150 3530 3530 3470 5115 4990 4990...
  • Page 104 DMWDC MODELS 0060 0080 0100 0110 0130 0160 0190 0205 DMWUC SOUND LEVEL Sound pressure level dB(A) DIMENSIONS Heigh x Lenght x Depth 1875x600x449 1875 x 900 x 449 1875 x 1200 x 449 Unit weight (*) At 1,5 meters height, 2 meters frontal distance in free field; down flow units (20 Pa AESP); nominal air flow. INNOV@ CENT -AGU-0912-E .
  • Page 105 Tab. 12 DMCDC - DMCUC (CW unit) DMCDC MODELS 0080 0110 0140 0160 0200 0230 DMCUC Power supply V/Ph/Hz 230V / 1Ph / 50Hz Total cooling capacity (7/12°C water temperature) 10.6 13.9 15.6 19.3 22.2 Total cooling capacity (15/10°C water temperature) 11.3 14.0 15.7...
  • Page 106 LENNOX DISTRIBUTION PORTUGAL  +33 4 72 23 20 00  +351 229 066 050 Due to Lennox’s ongoing commitment to quality, the specifi cations, ratings and dimensions are subject to change without notice and without incurring liability. Improper installation,...

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