USER MANUAL TREF GB
Contents
1. DIR LENNOX gt Inspecting the air filter MODELS 241 341 462 682 DOWN FLOW 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 INNOV ENERGY AGU 1407 E 23 LENNOX UPFLOW version Open the front panels to access the air filter compartment Remove the screws and the metallic support no need for tools Extract the filter on the right Pull on the right side the second filter and then extract it INNOV ENERGY AGU 1407 E DEIER LENNOX 9 4 Set the right fan speed The adopted fans are of the backward curved blades type in combination with EC 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 External pressure drops Unit performance full speed Unit performance intermediate speed DP Pa Unit performance low speed Air flow Nominal Air flow Air flow over the limits In the EC fans the rotation speeds are selected with different values of the control tension 0 10V The right value of the control tension has to be set by keyboard considering the AESP requested on si2. hazardous situations during installation and maintenance work their job in accordance with current laws and regulations A All work on the unit must be carried out by qualified personnel only trained to do Failure to comply with the rules provided in this manual or any modification made to the unit without prior authorisation will result in the immediate invalidation of the warranty A Warning Before performing any kind of work on the unit make sure it has been disconnected from the power supply INNOV ENERGY AGU 1407 E 10 LENNOX 2 Inspection Transport Positioning 2 1 Inspection on receipt On receiving the unit check that it is perfectly intact the unit left the factory in perfect conditions immediately report any signs of damage to the carrier and note them on the 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 2 2 Lifting and Transport While the unit is being unloaded and positioned utmost care must be taken to avoid abrupt or violent manoeuvres The unit must be handled carefully and gently avoid using machine components as anchorages or holds and always keep it in an upright position The unit should be lifted using the pallet it is packed on a transpallet or similar conveyance means should be used Warning In all lifting operations make sure
3. motor Electrical panel Scroll compressor Stainless steel drain pan Oil separator Filter dryer w D INNOV ENERGY AGU 1407 E LENNOX ween E Front extractable gt Double circuit configuration air filters alluminium wheel Plug fans with and EC motor Electrical panel SECH compressors Inverters Humidifier Stainless steel drain pan INNOV ENERGY AGU 1407 E LENNOX 1 1 Structure INNOV ENERGY 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 Units are completely closed and only frontal access is requested Anyway it is also possible to have side access in order to reach the steam piping and the drain pan or simply to substitute a damaged side panel all this problems are very rare but with INNOV ENERGY units it is possible to solve them The shape of the units is characterized with the curved edges with variable radium as for all LENNOX products this feature is obtained using special tools and gives both a good aesthetic and advantages against injuries The compressor compartment is separated from the air flow and the special internal design allows the simple dismounting of the upper part of it ensur
4. 2 Refrigerant pipes On site piping has to be installed by professional workers using only CUB quality copper pipes Take care in use of nitrogen during all brazing operations in order to avoid humidity and dirty in pipes Refrigerant ENERGY Model 241 341 462 682 f mm 15 88 12 70 9 53 HP horizontal Gas line 1 2 3 8 Liquid line i i mm 12 70 9 53 7 94 Hp vertical Gas line 3 8 5 16 Table up to 10 m of pipe length The declared performances are calculated for a max lines length of 10m in the next table the absorbed compressor power and the cooling capacity variation percentage for 20m lines are showed ENERGY Model 241 341 462 682 131 091 Frequency 30Hz 90Hz 110Hz 30Hz 90Hz 110Hz 30Hz 90Hz 110Hz Cooling Capacity 0 43 1 37 1 80 0 10 1 05 1 70 0 10 1 71 2 86 Power Consumption 0 25 1 59 2 48 0 54 1 27 1 72 0 54 2 35 3 36 Standard Copper pipes R A Minimum ZS Diameter Thickness bending design PED Max Copper Real copper Safety ratio mm mm z pressure PS Category os N mm2 o N mm2 radius mm bar 10 1 36 42 A3 P3 227 16 8 13 5 12 1 36 42 A3 P3 227 21 0 10 8 16 1 46 42 A3 P3 227 29 4 7 7 18 1 56 42 A3 P3 227 33 6 6 8 22 1 5 67 42 A3 P3 227 26 6 8 5 28 1 5 96 42 A3 P3 221 35 0 6 5 35 1 5 70 42 A3P3 227 44 8 5 0 42 1 5 84 42 A3P3 227 54 6 4 2 54 2 0 108 42 A3P3 2
5. 27 52 5 4 3 13 Refrigerant charge The following table gives an idea of the total refrigerant charge this should be used just as first reference but the right charge should be performed on site by a qualified installer Note The INNOV ENERGY units as well as the remote condenser are shipped filled with nitrogen or dry air ENERGY Model 241 341 462 682 131 091 Unit Charge kg 3 080 2 190 1 210 Air Cooled Condenser Charge standard unit kg 3 870 1 780 1 490 Air Cooled Condenser Charge kg 5 350 3 870 1 780 low noise unit g i Charge for liquid line kg m 0 130 0 080 0 070 Note approximated values 20 to be verified on site Values referred to each circuit INNOV ENERGY AGU 1407 E 32 LENNOXD lennoxemeia com SALES OFFICES BELGIUM AND LUXEMBOURG B 323 633 3045 FRANCE GERMANY 49 0 40 589 62350 ITALY NETHERLANDS POLAND 48 22 58 48 610 PORTUGAL d INNOVA ENERGY AGU 1407 E RUSSIA 7 495 626 56 53 SPAIN 34 902 533 920 UKRAINE 38 044 585 59 10 UNITED KINGDOM AND IRELAND 44 1604 669 100 OTHER COUNTRIES LENNOX DISTRIBUTION 33 4 72 232000 Due to Lennox s ongoing commitment to quality the specifications ratings and dimensions are subject to change without notice and without incurring liability Improper installation adjustment alteration service or
6. ES 32 13 REFRIGERANT CHARGE 32 INNOV ENERGY AGU 1407 E DP LENNOX Codification This codification describe the whole INNOV range All operating modes are not available on each type of unit Type of unit DM Medium range height 1875mm DH High range height 1998mm IN 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 Direct expansion city water condensed Direct expansion water condensed with remote dry cooler and indirect Free cooling Chilled water unit OTNESD Dual cooling units In this case this is combination of unit with operating mode above and chilled water to work with chiller Which provide more safety to your installation D Direct expansion with remote condenser chilled water coil K Direct expansion water condensed with remote dry cooler chilled water coil Q Direct expansion city water condensed chilled water coil Airflow configuration U Upflow D Downflow X Displacement Type of fan C Centrifugal double inlet forward curve R EC plug fan Nominal capacity Capacity in kW in this case 11kW R0110 Refrigerant circuit 1 or No compressor CW 2 compressors 2 circuits 4 compressors 2 circuits 1 compressor 1 circuit OD MO INNOV ENERGY AGU 1407 E 2 LENNOX 1 General description INNOV ENERGY CCAC self contained units are specia
7. LENNOX gt Basic cooling circuit for DX versions 1 circuit OPZIONALE OPTIONAL Ref Description Ref Description 1 Inverter driver 11 Condenser compressor 2 HP Pressure switch 12 Flooding valve 3 Pressure probe opt 13 Safety valve 4 Ball valve 14 Check valve 5 Refrigerant filter 15 Solenoid valve 6 Sight glass 16 Hot gas coil opt 7 Thermostatic valve 17 Mangan Ee SR 8 Evaporator 18 Hot gas thermostatic valve opt 9 LP pressure switch 19 Mangan F a 10 Liquid receiver INNOV ENERGY AGU 1407 E 8 LENNOX Basic cooling circuit for DX versions 2 circuits IMITE DI FORNITURA SUPPLY LIHIT Ref Description Ref Description 1 vanar niver 9 LP pressure switch compressor 2 HP Pressure switch 10 Liquid receiver 3 Pressure probe opt 11 Condenser 4 Ball valve 12 Flooding valve 5 Refrigerant filter 13 Safety valve 6 Sight glass 14 Check valve 7 Thermostatic valve 15 Solenoid valve 8 Evaporator INNOV ENERGY AGU 1407 E WE LENNOX 1 4 Installation warnings gt 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 The fluids under pressure in the cooling circuit and the presence of electrical components may cause
8. LENNOX Think far APPLICATION GUIDE Close control units eDrive 6 gt 70 kW INNOVA ENERGY AGU 1407 E X AIR CONDITIONING SOLUTIONS FOR YOUR FUTURE lennoxemeia com LENNOX CONTENTS PAGE 1 GENERAL DESCRIPTION 3 1 1 Structure 5 1 2 Application limits 6 1 3 Cooling circuit 7 1 4 Installation warnings 10 2 INSPECTION 11 2 1 Inspection on receipt 11 2 2 Lifting and transport 11 2 3 Unpacking 11 2 4 Positioning 11 3 INSTALLATION 12 4 EVACUATION AND CHARGING OPERATIONS 13 4 1 Introduction 13 4 2 Vacuum and charging machine 14 4 3 Evacuating a circuit contaminated with refrigerant 14 4 4 Charging positions single point 15 5 ELECTRICAL CONNECTIONS 16 5 1 Generalities 16 6 OPERATING DIAGRAMS 17 7 STARTING UP 18 7 1 Preliminary checks 18 7 2 Starting operations 18 7 3 Checks during operations 18 7 4 Checking the refrigerant charge DX versions 19 8 SETTING OPERATING PARAMETERS 20 8 1 Generalities 20 8 2 Maximum pressure switch 20 8 3 Minimum pressure switch 20 9 MAINTENANCE 21 9 1 Warnings 21 9 2 Generalities 21 9 3 Inspecting the air filter 22 9 4 Set the right fan speed 25 9 5 Repairing the cooling circuit 25 9 6 Tightness test 26 9 7 Hard vacuum and drying of cooling circuit 26 9 8 Recharging with refrigerant R410C 27 9 9 Environmental protection 27 10 TROUBLESHOOTING 28 11 TECHNICAL DATA 30 12 REFRIGERANT PIP
9. an 2 0 2 IE d2 JS Oo 6 30 Fan absorbed power 0 2 S ara a a a 0 3 3640 1 12 Seniman igo 7 iss 17 5 Maxi starting current without option 16 5 22 4 33 3 PVE oil load Ta IP III 1 40 Finned coil evaporator a es Number of rows ES EE E k 5 5 Type of fins Traitement Hydrophile sans silicates Fin spacing Mm 8 8 ar 2 1 Indoor fan E EE EIN SD EE Type __ Radia EC Radia EC Radia EC _ Radial EC Electrical supply 400 3 50 Nr of fans EEE E E PI 1 AESP nominal fan speed Pa 0 aa Ia 30 AESP maxi fan speed Pa 77 Im __ 538 500 Filtration Se ee a Filtration LL c B G3 Electrical heaters besuerge a Total heating capacity L kw 25 40 64 k 5 6 Material Aluminum Aluminium Aluminium Aluminium Humidifier a MEIER E EINER Maxi capacity kgh 30 30 30 3 0 Absorbed power kw 25 25 225 2 25 Frame eS Ge ee Fe es ee H 1 998 L mm 600 90 100 1 280 D mm 449 og ee 795 Weight kg 157 230 375 605 7 At 1 5 meter height 2 meters frontal distance in free field down flow units 30Pa AESP nominal air flow cp speed 50Hz Values referred to down flow units 30Pa AESP The performances are given considering the units in combination with the suggested remoter condensesr and with an outside air T 35 C INNOV ENERGY AGU 1407 E e 30 LENNOX INNOV ENERGY 0402 0682 0902 Sound pressure level WESSEN 58 Co
10. auge likewise connected to the intake side refer to the pressure gauge scale for the refrigerant R410A The degree of super heating is given by the difference between the temperatures thus determined Make sure that the Sub cooling of the cooling fluid is limited to between 3 and 5 C to this end 1 read the temperature indicated by a contact thermometer placed on the condenser outlet pipe 2 read the temperature indicated on the scale of a pressure gauge connected to the liquid inlet at the condenser outlet refer to the pressure gauge scale for the refrigerant R410A The degree of Sub cooling is given by the difference between the temperatures thus determined Warning all the air condensed INNOV ENERGY units are charged with dry nitrogen Any top ups must be made using the same type of refrigerant This operation is to be considered extraordinary maintenance work and must be performed by qualified personnel only Warning the refrigerant R410A requires PVE polyester oil of the type and viscosity indicated on the compressor rating plate For no reason should oil of a different type be introduced into the oil circuit Note In INNOV ENERGY units HFC R410A is used This refrigerant is a mixture of R32 and R125 50 50 nearly azeotropic Its behaviour is much similar to that one of a pure fluid in fact it introduces a glide approximately 0 1 C INNOV ENERGY AGU 1407 E WER LENNOX 8 Setting operating parameter
11. creases but less soluble as the temperature increases Pressure Oil fig of refrigerant in oil If the oil in the sump is held at a constant pressure an increase in temperature will significantly reduce the amount of refrigerant dissolved in it thus ensuring that the lubricating function desired is maintained The problem of inadequate lubrication occurs if the crankcase is not duly heated above all after seasonal INNOV ENERGY AGU 1407 E DER LENNOX interruptions when due to the suction effect of the compressor there is an abrupt drop in pressure inside the sump which results in considerable evaporation of the refrigerant previously dissolved in the oil If heating elements were not installed this phenomenon would cause two problems The release of refrigerant from the cooling circuit tends to cool down the oil and thus actually creates the opposite effect by keeping more refrigerant dissolved in the oil for this reason it is advisable to switch on if available the crankcase heater during the evacuation process 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 T
12. directly on the sight glass electronic driven valves High and low pressure switches Schrader valves for checks and or maintenance 00 oo 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 turned 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 their efficiency will not be affected by any faults occurring in the microprocessor control circuit in compliance with 97 23 PED Control microprocessor the microprocessor built into the unit allows the different operating parameters to be controlled from a set of pushbuttons situated on the electric control board o Switching on off of compressor s to maintain the temperature set point T inside the shelter o Alarm management High low pressure Dirty filters alarm optional Air flow alarm Alarm signalling Display of operating parameters RS232 RS485 serial output management optional Phase sequence error Not displayed by the mP but prevents the compressor from starting up O OOO see microprocessor control manual for further details also in relation to particular customer specifications INNOVE ENERGY AGU 1407 E M
13. f explosion 9 7 Hard Vacuum and Drying of Cooling Circuit To achieve a hard vacuum in the cooling circuit it is necessary to use a pump capable of generating a high degree of vacuum i e 150 Pa of absolute pressure with a capacity of approximately 10 m h If such a pump is available one evacuation will normally suffice to achieve an absolute pressure of 150 Pa If there is no such vacuum pump available or whenever the circuit has remained open for long periods of time you are strongly recommended to adopt the triple evacuation method This method is also recommended when there is a presence of humidity within the circuit The vacuum pump should be connected to the inlets The procedure to be carried out is as follows Evacuate the circuit until you reach an absolute pressure of at least 350 Pa at this point inject nitrogen into the circuit until you reach a relative pressure of about 1 bar Repeat the step described above Carry out the step described above for the third time but in this case attempting to reach the hardest vacuum possible Using this procedure you can easily remove up to 99 of pollutants INNOV ENERGY AGU 1407 E 26 LENNOX 9 8 Recharging with refrigerant R410A 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 Fill with refrigerant in liquid form until you reach 75 of
14. gh temperatures Be 9 2 Generalities To guarantee a constantly satisfactory performance over time it is advisable to carry out routine maintenance and checks as described below The indications below are related to standard tear and wear Operation Frequency e Check the efficiency of all the control and safety devices Once a year e Check the terminals on the electric control board and compressor terminal Once a year boards to ensure that they are securely tightened The movable and fixed contacts of the circuit breakers must be periodically cleaned and replaced whenever they show signs of deterioration e Check the refrigerant level by means of the liquid level indicator Every 6 months DX e Check the efficiency of the differential air pressure switch and dirty filter Every 6 months differential pressure switch e Check the condition of the air filter and replace it if necessary Every 6 months e Check the humidity indicator green dry yellow humid on the liquid level Every 6 months DX indicator if the indicator is not green as shown on the indicator sticker replace the filter INNOV ENERGY AGU 1407 E 21 LENNOX 9 3 Inspecting the air filter gt Inspecting the air filter MODELS 091 131 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 Down Flow Up Flow INNOV ENERGY AGU 1407 E
15. he refrigerant may in fact dissolve in the oil of the vacuum pump reducing its performance for a long time hours 4 4 Charging position single point The best position to charge the unit is the section between the thermostatic valve and the evaporator Take care to avoid the fixing of the thermostat bulb until the operation is completed It is important to ensure that the valve orifice remains open in order to allow the passage of refrigerant also towards the condenser liquid receiver If possible avoid the charge of refrigerant into the suction line of the compressor as this may cause excessive dilution of the lubricant In any case verify first the necessary volume of the crankcase and compare it with the required charge volumes INNOV ENERGY AGU 1407 E WER LENNOX 5 Electrical connections 5 1 Generalities A 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 wire at the centre of the star optional power supply w o neutral A The size of the cable and line protections must conform to the specifications provided in the wiring diagram The supply voltage may not undergo fluctuations exceeding 5 and the unbalance between pha
16. hermostat has been set according to the nominal values provided You should not disconnect the unit from the power supply during periods when it is inoperative but only when it is to be taken out of service for a prolonged period e g at the end of the season 7 3 Checks during operations Check the phase sequence relay 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 INNOV ENERGY AGU 1407 E WER LENNOX 7 4 Checking the refrigerant charge 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 Large quantities of bubbles should not appear through the liquid level indicator A constant passage of numerous bubbles may indicate that the refrigerant level is low and needs to be topped up The presence of a few bubbles is however allowed Make sure that the refrigerant gas super heating is limited to between 5 and 8 C to this end 1 read the temperature indicated by a contact thermometer placed on the compressor intake pipe 2 read the temperature indicated on the scale of a pressure g
17. ied out to ensure proper installation Apply a anti vibration rubber lining between the unit and the bottom Position the unit on the floor floorstand base frame The recommended sizes for the power cables and emergency line are shown in the table below Model Main power Cable type unit supply INADRO091 INAURO091 4x2 5 mmg T 2 5mmq INADRO131 INAURO131 4x6 mmg T Emmg INADRO241 INAURO241 4x16 mmg T 16mmq INADRO341 INAUR 0341 400V 3Ph N SOH2 216 mmq T 16mmq INADRO462 INAUR 0462 4x25 mmg T 16mmq INADRO682 INAUR 0682 4x25 mmq T 16mmq INNOVE ENERGY AGU 1407 E WE LENNOX 4 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 4 1 Introductions The contemporaneous presence of liquid and vapour requires for both to be in a state of saturation Gibb s law as shown in the fig 1 In thermal equilibrated conditions the pressure in the tank corresponds to the ambient temperature Withdrawal of refrigerant from the tank has following effects withdrawal of refrigerant charge gt pressure drop inside the tank pressure drop inside the tank T drop amp change of status T drop amp change of status evaporation of part of the liquid causing a cooling down of the liquid cooling of liquid gt thermal exchange with ambient air f
18. ing an insuperable accessibility to all refrigerating components All fixing elements are made in stainless steel or in non corroding materials The dray pan is made in stainless steel in order to ensure long time operation without damages All panels are thermally insulated with a polyurethane foam class 1 according UL 94 norms this material thanks to the open cells gives good performances in sound absorption As an option sandwich panels are available in this case mineral fibres are closed between the panel and a second sheet of metal giving the maximum in terms of internal cleaning Double skin panels are classified between non flammable materials class A1 according DIN 4102 norms the sound insulation is better than the standard solution but the internal reflected sound power will increase the amount in delivery side 2dB Power supply limits and Storage conditions for DX versions Power supply Nominal Value 10 10 90 r h Storage conditions 55 90 r h INNOV ENERGY AGU 1407 E De LENNOX 1 2 Application limits INA R Air condensed versions 32 28 18 INW R Water condensed versions 32 28 18 Indoor air Temp 20 Indoor air T 25 40 RH lt 65 Condenser air Temp 45 RH lt 65 Condenser water Temp 43 INNOV ENERGY AGU 1407 E LENNOX 1 3 Cooling circuit The entire refrigerating circuit is assembled in
19. lly 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 ENERGY units represent the state of the art between technology and design as well as all LENNOX products thanks to their characteristics INNOV ENERGY can be installed also in offices where people are working The depth of 795 mm 600mm for size 091 and size 131 for all versions allows the compatibility with standard electronic devices furthermore the innovative design and the high tech selected colours RAL9002 make INNOV ENERGY units complementary to the last generation of IT devices The internal design of the units in firstly made looking to efficiency and reliability but don t loosing accessibility all components including e heaters fans compressors valves etc can be maintained from the front and furthermore the door s are dismountable in few seconds thanks to an innovative hinge this is very important when units are installed in small corridors The exclusive use of primary brands components and a fully integrated development process CAD CAM CAE stands for highest possible quality level regarding efficiency reliability maintenance time pre and after sales support All the units are available both in single circuit up to 34 1 kW and up to 68 5 kW in double circuit gt Single circuit configuration Plug fan with alluminium wheel and EC
20. maintenance can cause property damage or personal injury Installation and service must be performed by a qualified installer and servicing agency
21. mpressor Type BLDC Scroll Scroll Scroll Nr of compressors Nr of circuits SE EECH y2 y2 O S SHR 0 99 0 93 0 90 S 5 Compressor absorbed current A 22 1 37 7 43 6 C ea ea ee S x S gt ISHR LL 10 100 85 SS Ss EER a85 443 TI 471 O S E S S Eee ae SS S 5 EE EE Fanabsorbedpower kW 04 05 06 amp Fanabsorbedcurrent a 07 08 10 S Maxi starting current without option Charge d huile PVE Finned coil evaporator AAA ia Number of rows SE E a 4 Type of fins i Traitement Hydrophile sans silicates Fin spacing Indoor fan E Type Radia EC Radia EC Radia Ec Electrical supply Nr of fans RSR ESCHER SE DESS EECH AESP nominal fan speed Pa 3 an 8 AESP maxi fan speed Pa 482 526 534 Filtration Se EEE ees Seas Filtration LL c B Electrical heaters ee Ke es ee eee Total heating capacity Material __ Aluminium Aluminium Aluminium Humidifier EEE EEE EI Maxi capacity kgh 80 80 Sam Absorbed power Low Lon om Frame E a IN H L D Weight kg 632 979 1013 At 1 5 meter height 2 meters frontal distance in free field down flow units 30Pa AESP nominal air flow cp speed 50Hz 7 Values referred to down flow units 30Pa AESP The performances are given considering the units in combination with the suggested remoter condensers and with an outside air T 35 TC INNOV ENERGY AGU 1407 E 31 LENNOX 1
22. otection module check the thermal contact Identify the causes after restarting The compressor does not start The circuit breakers or line fuses Pinpoint the cause by measuring have been tripped by a short the resistance of the individual Circuit windings and the insulation from the casing before restoring power switches has tripped eliminate the causes the distribution compartment sheet metal just below the e panel Down Flow units and clean it eege out from the unit The ee rs is missing Bea a new one reaching the nominal air flow INNOV ENERGY AGU 1407 E 29 LENNOX 11 Technical data INNOV ENERGY Sound pressure level Compressor Beet eee Type BLDC Twin Rotary Twin Rotary Scroll Nr of compressors Nr of circuits ye e S a J Mo S 9 0 84 S 11 4 5 Compressor absorbed current A 37 49s 108 18 3 ss 3 02 Fanabsorbedpower kw 02 04 TI 09 1 0 amp Fanabsorbedcurrent A 03 06 15 1 7 gt 7280 S 2 25 Supply temperature 12 6 14 9 14 1 12 4 Gates Ee 23 7 Sensible capacity w 62 so 162 21 1 B EE 0 89 5 5 2 a 4 Compressor absorbed current __A 8 4 Ee CS 4 55 ZE Fanabsorbedpower kW 0 5 ZS Fan absorbed current A 0 8 5460 1 7 Sey emee e RR II ae 12 6 N Total capacity _ 8 0 8 0 s ema oo aa En aa 1 00 S Compressor absorbed power W 06 os os 1 3 5 ec san a an
23. 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 All DX unit CAT W F D Q versions are prechargerd with dry nitrogen for A D or with R410A refrigerant for W F Q versions Compressors on INNOV ENERGY units only primary brand scroll compressors in special execution for inverter application motor are installed excepted the 060 model in which a rolling piston compressor are installed Scroll compressor represent for CCAC units the best solution in terms of efficiency and reliability The internal compression ratio is very close to the typical operating condition of CCAC giving the maximum in terms of COPs and the perfect balanced pressures at start up gives big advantages to the e_motor in terms of reliability mainly in this filed where frequent start up may be possible All motors are thermally protected with an internal sensors chain in case of overload this sensor opens without giving contacts to the connection box Cooling components o Molecular mesh activated alumina filter dryer Flow indicator with humidity indicator Indications are provided
24. re increase the pressure relief valve will open The high pressure switch must be manually reset this is possible only when the pressure falls below the differential set see Table II 8 3 Minimum pressure switch The low pressure switch stops the compressor when the inlet pressure falls below the set value for more than 180 seconds The switch is automatically reset when the pressure rises above the set differential see Table II INNOV ENERGY AGU 1407 E 20 LENNOX 9 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 9 1 Warnings All the operations described in this chapter MUST ALWAYS BE PERFORMED BY QUALIFIED PERSONNEL ONLY Before carrying out any work on the unit or accessing internal parts make sure you have disconnected it from the mains electricity supply especially careful when working in the surrounding area with the panels off Be especially careful when working in proximity to finned coils since the 0 11 mm thick aluminium fins can cause superficial injuries due to cuts After completing maintenance jobs always replace the panels enclosing the units and secure them with the fastening screws provided A The upper part and the outlet pipe of the compressor reach hi
25. s 8 1 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 Table II All servicing of the equipment is to be considered extraordinary maintenance and may be carried out BY QUALIFIED TECHNICIANS ONLY incorrect settings may cause serious damage to the unit and injuries to persons The operating parameters and control system settings configurable by means of the microprocessor control are password protected if they have a potential impact on the integrity of the unit gt Table ll setting of control devices CONTROL DEVICE SET POINT DIFFERENTIAL Differential air pressure switch air flow Pa 50 30 Differential air pressure switch dirty filter Pa 70 20 CONTROL DEVICE ACTIVATION DIFFERENTIAL RESETTING Maximum pressure switch oooooWoo Bar g 42 0 13 0 Manual Minimum pressure switch A Bar g 2 1 3 Automatic Modulating condensation control devices DX versions Bar g 14 7 Time lapse between two compressor starts s 480 8 2 Maximum pressure switch The high pressure switch stops the compressor when the outlet pressure exceeds the set value Warning do not attempt to change the setting of the maximum pressure switch Should the latter fail to trip in the event of a pressu
26. ses must always be below 2 A The above operating conditions must always be complied with failure to ensure said conditions will result in the immediate invalidation of the warranty The electrical connections must be made in accordance with the information shown in the wiring diagram provided with the unit and with current and local regulations An earth connection is mandatory The installer must connect the earthing wire using the earthing terminal situated on the electric control board yellow and green wire The power supply to the control circuit is taken from the power line through an insulating transformer situated on the electric control board The control circuit is protected by suitable fuses or automatic breakers depending on the unit size A Never connect the inverter driven compressors directly to the 400 3 50 power supply INNOV ENERGY AGU 1407 E 16 LENNOX 6 Operating diagrams N DR N UR N XR Downflow version Upflow version Displacement version rm D INNOVE ENERGY AGU 1407 E 17 LENNOX 7 STARTING UP 7 1 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 5 and make sure the yellow indicator light of the phase sequence relay is on The phase seq
27. ssurise the circuit circuit as revealed by theland check for leaks Evacuate presence of bubbles in the flow slowly for more than 3 hours until indicator also with sub cooling reaching a pressure of 0 1 Pa and values exceeding 5 C then recharge in the liquid phase INNOV ENERGY AGU 1407 E 28 LENNOX Presence of abnormally high Unit overcharged as revealed by a Drain the circuit pressure Sub cooling of more than 8 C Thermostatic valve and or filter Check the temperatures upstream obstructed These symptoms mayland downstream from the valve also occur in the presence of an and filter and replace them if abnormally low pressure necessary Low condensation pressure Transducer fault Check the efficiency of the condensation control device optional Low evaporation pressure Malfunctioning of thermostatic Warming the bulb with your hand valve check whether the valve opens and adjust it if necessary If it does not respond replace it Filter dryer clogged Pressure drops upstream and downstream from the filter should not exceed 2 C If they do replace the filter Low condensation T Check the efficiency of the condensation control device where present Low level of refrigerant Check the refrigerant level by measuring the degree of Sub cooling if it is below 2 C replenish the charge The internal thermal protection In the case of compressors device has tripped eguipped with a pr
28. te If the unit is equipped with the air flow control option the mp manage the fan speed in order to obtain the required air flow Air flow set point 9 5 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 less 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 If the cooling circuit has undergone any repairs the following operations must be carried out tightness test evacuation and drying of the cooling circuit charging with refrigerant If the system has to be drained always recover the refrigerant present in the circuit using suitable equipment the refrigerant should be handled exclusively in the liquid phase INNOV ENERGY AGU 1407 E 025 LENNOX 9 6 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 pressurisation 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 Should any leaks be detected during the test empty out the circuit before repairing the leaks with suitable alloys A Do not use oxygen in the place of nitrogen as a test agent since this would cause a risk o
29. that the unit is securely anchored in order to prevent accidental falling or overturning 2 3 Unpacking The packing must be carefully removed to avoid the risk of damaging the unit Different packing materials are used wood cardboard nylon etc It is recommended to keep them separately and deliver them to suitable waste disposal or recycling facilities in order to minimise their environmental impact 2 4 Positioning Bear in mind the following aspects when choosing the best site for installing the unit and the relative connections positioning and dimensions of the coupling flanges location of power supply solidity of the supporting floor It is recommended to first prepare holes in the floor wall for passing through the power cables and for the air outlet down flow units The dimensions of the air outlet and the positions of the holes for the screw anchors and power cables are shown in the dimensional drawings INNOV ENERGY AGU 1407 E DR LENNOX 3 Installation The INNOV ENERGY 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 INADR0091 INAUROO91 10 INADRO131 INAURO131 10 INADRO241 INAURO241 10 INADRO341 INAUR 0341 10 INADRO462 INAUR 0462 10 INADRO682 INAUR 0682 10 The following steps should be carr
30. the total charge 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 this manual have been reached Since R410A is a binary mixture charging must take place exclusively with liquid refrigerant to ensure the correct percentages of the two constituents Introduce refrigerant through the inlet in the liquid line A unit that was originally made to be charged with R410A must not be charged other refrigerants without the written authorisation of LENNOX 9 9 Environmental protection The law implementing the regulations reg EEC 2037 00 which govern the use of ozone depleting substances and greenhouse gases bans the dispersal of refrigerant gases in the environment and requires whoever is in their possession to recover them and at the end of their useful life either to return them to the dealer or take them to a suitable waste disposal facility The refrigerant HFC R410A is not harmful to the ozone layer but is included among the substances responsible for the greenhouse effect and thus falls within the scope of the aforesaid regulations A Therefore special care should be taken when carrying out maintenance work to minimise refrigerant leaks INNOV ENERGY AGU 1407 E 27 LENNOX 10 Troubleshooting On the ne
31. uence relay is positioned on the electric control board if the sequence is not duly observed it will not enable the machine to start Make sure there are no refrigerant leakage that may have been caused by accidental impacts during transport and or installation Check the power supply to the crankcase heater where present are automatically activated when the main switch is put on Their function is to raise the T A The heating elements must be turned on at least 12 hours before the unit is started They of the oil in the sump and limit the quantity of refrigerant dissolved in it To verify whether the heating elements are working properly check the lower part of the compressors it should be warm or in any case at a temperature 10 15 C higher than the ambient temperature Pressure R407C in oil The diagram above illustrates a specific property of gases Charles Law which are more soluble in liquids as the pressure increases but less soluble as the temperature increases if the oil in the sump is held at a constant pressure an increase in temperature will significantly reduce the amount of refrigerant dissolved in it thus ensuring that the desired lubricating function is maintained 7 2 Starting operations Before starting the unit turn the main switch on select the operating mode desired from the control panel and press the ON button on the control panel If the unit fails to start up check if the service t
32. urther evaporation of remaining liquid the original pressure in the tank will be restored after a certain period of time T tank ambient Saturated gas Saturated liquid Enthalpy h INNOV ENERGY AGU 1407 E WER LENNOX 4 2 Vacuum and charging machine gt 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 150 200 s Time The fig 3 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 This operation facilitates the removal of remaining and or frozen humidity during the evacuation process 4 3 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 Refrigerants all tend to dissolve in oil compressor sump The Oil figure illustrates a specific property Charles Law of gases which are more soluble in liquids as the pressure in
33. xt 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 Therefore once the cause has been identified you are advised to contact the manufacturer or a qualified technician for help The unit does not start No power supply Check if power is being supplied both to the primary and auxiliary circuits The electronic card is cut off from Check the fuses the power supply Alarms have been released Check whether any alarms are signalled on the microprocessor control panel eliminate the causes and restart the unit The phase sequence is wrong Invert two phases in the primary power line after disconnecting them upstream from the unit The compressor is noisy The compressor is rotating in the Check the phase sequence relay wrong direction Invert the phases on the terminal board after disconnecting the unit and contact the manufacturer Presence of abnormally high Insufficient airflow through thel Check for the presence o pressure condenser obstructions in the condenser section ventilation circuit surface is obstructed Check the condensation control device optional Presence of air in the refrigerant Drain and pre
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